JP2024025793A - Laminate paper producing device, heat seal roller for laminate paper producing device, and laminate paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a product that has high-value-added functions and achieves drastic improvement in performance compared to a conventional one, a laminate paper producing device, and a laminate paper producing method.

SOLUTION: A paper hand-towel comprises laminate paper. The laminate paper includes a pair of crepe sheets as outer layer sheets, and a thermally fusible intermediate layer sheet arranged in a laminated state between the pair of crepe sheets. The crepe sheets are thermally fused to the intermediate layer sheet by thermally fusing means, to form rows of linear thermally fused parts extending in a direction orthogonal to a direction in which crepe wrinkles of the crepe sheets extend, thereby thermally fusing the crepe sheets to the intermediate layer sheet, resulting in a laminate structure.

SELECTED DRAWING: Figure 16

COPYRIGHT: (C)2024,JPO&INPIT

Description

Application for application of Article 30, Paragraph 2 of the Patent Act Website publication date: November 1, 2015 Website address: http://www. clear. co. jp/#! sakura/c1xmz http://www. clear. co. jp/#! sakura-eng/cb6k

The present invention relates to a laminated paper manufacturing device, a heat seal roller for the laminated paper manufacturing device, and a laminated paper.

Inventions relating to laminated paper that can be used in conventional paper towels and the like include the invention disclosed in Patent Document 1 and the invention disclosed in Patent Document 2, both of which were invented or devised by the present inventor. In these inventions, a moisture-absorbing paper having crepe and a heat-fusible sheet (a moisture-absorbing paper or non-woven fabric mixed with synthetic fibers) are laminated, and a heat-setting portion or a heat-adhesive sheet is applied so that the moisture-absorbing paper having crepe extends in a direction substantially perpendicular to the crepe of the moisture-absorbing paper. A seal part is formed and they are integrated by heat fusion. These inventions can provide laminated paper that is pleasant to the touch and has excellent appearance and usability, and can also heat-seal the laminated paper at low temperatures, making processing easier and reducing manufacturing costs. can be reduced.

Further, as inventions of the present inventors that further improve the conventional laminated paper having the above-mentioned excellent effects, there are the inventions described in Patent Document 3 and the inventions described in Patent Document 4. In particular, these inventions provide laminated paper that greatly improves the fusing strength of the heat-sealed parts of crepe paper and heat-fusible sheets, increases the overall volume, and further improves the appearance. be able to. That is, the laminated paper according to these inventions can obtain sufficient fusion strength even if the fusion area is reduced, and can also increase the overall volume.

Special Publication No. 4-24480 Publication No. 4-15116 Japanese Patent Application Publication No. 11-342090 JP2003-39581A

The inventions of Patent Documents 1 to 4 mentioned above can all significantly improve the feel, appearance, and feeling of use when the laminated paper is embodied in paper towels, etc. The product mainly exhibits functional effects, such as greatly improving the bonding strength between the moisture-absorbing paper and the heat-adhesive sheet, and greatly increasing the overall volume. This brings about great advantages. On the other hand, the present inventor has developed a method to add higher value-added functions to conventional laminated paper during the process of processing laminated paper as a raw material into final products such as paper towels, or at a stage after processing. We also searched for a new laminated paper and its manufacturing method that could dramatically improve its performance as a laminated paper. The present inventor has developed a laminated paper that is equipped with such high value-added functions and has dramatically improved performance than before, a manufacturing method for manufacturing the laminated paper, and a method for manufacturing the laminated paper. As a result of continuing research and development on manufacturing equipment for manufacturing or manufacturing equipment used in the manufacturing method, and repeated trial and error, the present invention was achieved.

That is, the present invention provides a laminated paper manufacturing device that is equipped with high value-added functions and has dramatically improved performance compared to conventional ones, a heat seal roller for such a laminated paper manufacturing device, and a method for manufacturing such laminated paper. The objective is to provide laminated paper manufactured by this equipment.

In the heat seal roller of the laminated paper manufacturing apparatus according to the first aspect of the present invention, the laminated paper is arranged in a laminated state between a pair of crepe papers as outer layer sheets and the pair of crepe papers. The crepe paper is made of a nonwoven fabric as a heat-fusible intermediate layer sheet, and the crepe paper is heated to the intermediate layer sheet by a linear heat-fusion part row extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. It is fused to form a laminated structure. The heat-seal roller of such a laminated paper manufacturing apparatus includes a first heat-seal roller and a second heat-seal roller that form a pair for forming the heat-sealing section array on the laminated paper. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. The width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is set to be larger by a certain dimension than the width of the thermocompression bonding surface of the thermocompression bonding convexity of the first heat sealing roller, and When the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat sealing roller and the thermocompression bonding surface of the thermocompression bonding convexity of the second heat sealing roller are placed facing each other in a substantially close contact state, the first on both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the heat sealing roller, so that certain width portions at both widthwise ends of the thermocompression bonding surface of the thermocompression bonding convexity of the second heat sealing roller are exposed. It has become. On both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat seal roller, a pair of side surfaces extend obtusely at a predetermined inclination angle to form an obtuse angle with the thermocompression bonding surface.

A laminated paper manufacturing apparatus according to a second aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, the roller lengths of the first heat seal roller and the second heat seal roller are set within a range of 1200 mm to 1500 mm. The roller diameters of the first heat seal roller and the second heat seal roller are set within a range of 180 mm to 300 mm. The pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-sealed portion of the laminated paper before heat-sealing, can be set to a value of 2 atmospheres or more.

A laminated paper manufacturing apparatus according to a third aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, the pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-sealed portion of the laminated paper before heat-sealing, is determined by the roller lengths of the first heat-seal roller and the second heat-seal roller. is 1400 mm, the pressure can be set within the range of 5.5 to 7.0 atm, and when the roller length of the first heat seal roller and the second heat seal roller is 1500 mm, the pressure is 7.5 to 8.0. It can be set freely within the atmospheric pressure range.

A laminated paper manufacturing apparatus according to a fourth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, can be freely set within the range of 175 to 200°C. Temperature control and rotation control of the first heat seal roller and the second heat seal roller so that the thermocompression bonding temperature increases or decreases in proportion to the rotational speed of the first heat seal roller and the second heat seal roller. I do.

A laminated paper manufacturing apparatus according to a fifth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend, resulting in a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat sealing portions, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding protrusion is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotation of the first heat seal roller and the second heat seal roller is maintained constant. The rotational speed of the first heat seal roller and the second heat seal roller is increased or decreased according to the thickness of the base paper so that the speed increases or decreases in proportion to the thickness of the base paper, which is the thickness of the laminated paper before heat sealing. Control rotation.

A laminated paper manufacturing apparatus according to a sixth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotation of the first heat seal roller and the second heat seal roller is maintained constant. The rotational speed of the first heat seal roller and the second heat seal roller is adjusted according to the thickness of the nonwoven fabric so that the speed increases or decreases in proportion to the thickness of the nonwoven fabric, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. Control rotation by changing increase/decrease.

A laminated paper manufacturing apparatus according to a seventh aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, the rotational speeds of the first heat seal roller and the second heat seal roller are maintained constant, and the temperature of the first heat seal roller and the second heat seal roller is set at a temperature during thermocompression bonding. The thermocompression bonding temperature of the first heat seal roller and the second heat seal roller is adjusted according to the nonwoven fabric thickness so that the temperature increases or decreases in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat fusion bonding. It is possible to freely control the temperature by increasing or decreasing the temperature.

A laminated paper manufacturing apparatus according to an eighth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. Such a laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, a sealed space is formed inside each of the first heat seal roller and the second heat seal roller, and the inner space of the first heat seal roller and the second heat seal roller is It is a closed space maintained in a vacuum state. External water supply means is connected to the internal spaces of the first heat seal roller and the second heat seal roller, respectively, and the water of the first heat seal roller and the second heat seal roller is supplied from the water supply means to the inner spaces of the first heat seal roller and the second heat seal roller. Moisture is supplied to the internal spaces, respectively, and when the first heat seal roller and the second heat seal roller are heated, the high temperature steam obtained by heating the moisture is supplied to the first heat seal roller and the second heat seal roller. The first heat seal roller and the second heat seal roller are entirely covered with water vapor in a thin layer or film form on the inner surface of the second heat seal roller. The heat seal roller and the second heat seal roller are maintained at a uniform temperature over the entire circumferential direction and the entire length direction, and the first and second heat seal rollers are The thermocompression bonding temperature, which is the temperature of the heat seal roller No. 2 during thermocompression bonding, can be freely controlled so as to be maintained uniformly and evenly.

A laminated paper according to a ninth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is laminated paper manufactured using paper manufacturing equipment. The manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. The width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is set to be larger by a certain dimension than the width of the thermocompression bonding surface of the thermocompression bonding convexity of the first heat sealing roller, and When the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat sealing roller and the thermocompression bonding surface of the thermocompression bonding convexity of the second heat sealing roller are placed facing each other in a substantially close contact state, the first on both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the heat seal roller, so that certain width portions at both widthwise ends of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller are exposed. It has become. On both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat seal roller, a pair of side surfaces extend in an inclined manner at a predetermined inclination angle forming an obtuse angle with the thermocompression bonding surface. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between the

A laminated paper according to a tenth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. It is said that In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller. Furthermore, the roller lengths of the first heat seal roller and the second heat seal roller are set within a range of 1200 mm to 1500 mm, and the roller diameters of the first heat seal roller and the second heat seal roller are: The pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-fused portion of the laminated paper before heat-sealing, is set within the range of 180 mm to 300 mm, and is set to a value of 2 atmospheres or more. There is. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between

The laminated paper according to the eleventh aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion The circumferential surface of the portion is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller. Further, the pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-sealed portion of the laminated paper before heat-sealing, is determined by the roller lengths of the first heat-seal roller and the second heat-seal roller. is 1400 mm, the pressure is set within the range of 5.5 to 7.0 atm, and when the roller length of the first heat seal roller and the second heat seal roller is 1500 mm, the pressure is set within the range of 7.5 to 8.0 atm. is set within the range. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between the two.

A laminated paper according to a twelfth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion The circumferential surface of the portion is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller. Furthermore, a thermocompression bonding temperature, which is a temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is set within a range of 175 to 200°C, and the thermocompression bonding temperature is higher than that of the first heat seal roller. The temperature and rotation of the first heat seal roller and the second heat seal roller are controlled so that the rotational speeds of the first heat seal roller and the second heat seal roller are increased or decreased in proportion to the rotational speeds of the seal roller and the second heat seal roller. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between the two.

A laminated paper according to a thirteenth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat sealing roller and a second heat sealing roller forming a pair for forming the heat-sealing part row, and the laminated paper manufacturing apparatus includes: In the first heat seal roller, the first heat seal roller has a thermocompression bonding convex portion in the form of a convex strip corresponding to the row of heat sealing portions, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller. Further, the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotation of the first heat seal roller and the second heat seal roller is maintained constant. The rotational speed of the first heat seal roller and the second heat seal roller is increased or decreased according to the thickness of the base paper so that the speed increases or decreases in proportion to the thickness of the base paper, which is the thickness of the laminated paper before heat sealing. Rotation is controlled. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between

A laminated paper according to a fourteenth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat sealing roller and a second heat sealing roller forming a pair for forming the heat-sealing part row, and the laminated paper manufacturing apparatus includes: In the first heat-sealing roller, the first heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression-bonding convexity is a thermocompression bonding surface, and the first heat-sealing roller has In the manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is The thermocompression bonding surface is opposite to the thermocompression bonding surface of the first heat seal roller. Further, the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotation of the first heat seal roller and the second heat seal roller is maintained constant. The rotational speed of the first heat seal roller and the second heat seal roller is increased or decreased according to the thickness of the base paper so that the speed increases or decreases in proportion to the thickness of the base paper, which is the thickness of the laminated paper before heat sealing. Rotation is controlled. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between

The laminated paper according to the fifteenth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat sealing roller and a second heat sealing roller forming a pair for forming the heat-sealing part row, and the laminated paper manufacturing apparatus includes: In the first heat seal roller, the first heat seal roller has a thermocompression bonding convex portion in the form of a convex strip corresponding to the row of heat sealing portions, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller. Further, the rotational speeds of the first heat seal roller and the second heat seal roller are maintained constant, and the temperature of the first heat seal roller and the second heat seal roller is set at a temperature during thermocompression bonding. The thermocompression bonding temperature of the first heat seal roller and the second heat seal roller is adjusted according to the nonwoven fabric thickness so that the temperature increases or decreases in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat fusion bonding. The temperature is controlled by increasing and decreasing the temperature. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between the two.

A laminated paper according to a sixteenth aspect of the present invention is composed of a pair of crepe papers and a nonwoven fabric as a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. , a laminated paper formed by heat-sealing the crepe paper to the intermediate layer sheet to form a laminated structure by a line of linear heat-sealing parts extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; This is a laminated paper manufactured using a paper manufacturing method. The manufacturing method uses a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller that form a pair for forming the heat-sealing section row. In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. It is said that In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller. Further, a sealed space is formed inside each of the first heat seal roller and the second heat seal roller, and the inner space of the first heat seal roller and the second heat seal roller is It is a closed space maintained in a vacuum state, and an external water supply means is connected to the inner space of the first heat seal roller and the second heat seal roller, respectively, and from this water supply means the inner space of the first heat seal roller and the second heat seal roller are connected. Moisture is supplied to the internal spaces of the first heat seal roller and the second heat seal roller, respectively, and when the first heat seal roller and the second heat seal roller are heated, the moisture is heated and obtained. The high-temperature steam is applied to the inner surfaces of the first heat-sealing roller and the second heat-sealing roller in the form of a thin layer or film, and the layered or film-like water vapor is applied to the inner surfaces of the first heat-sealing roller and the second heat-sealing roller. The entire second heat sealing roller is maintained at a uniform temperature over the entire circumferential direction and lengthwise direction of the first heat sealing roller and the second heat sealing roller, and all of the thermocompression bonding convex portions are maintained at a uniform temperature. The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first and second heat seal rollers, is controlled to be maintained evenly and uniformly over the entire thermocompression bonding surface of the thermocompression bonding surface. The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. It is formed by thermocompression bonding between the

The present invention can be understood as, for example, the following inventions (products formed by processing laminated paper according to the 17th to 29th aspects, etc.). That is, in the product obtained by processing laminated paper according to the seventeenth aspect of the present invention, the laminated paper is arranged in a laminated state between a pair of crepe paper serving as an outer layer sheet and the pair of crepe paper. and a nonwoven fabric as a heat-fusible intermediate layer sheet. The laminated paper has a laminated structure in which the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. Further, in the laminated paper, the crepe rate of the crepe paper is set within the range of 20% to 30%, and the interval between the heat-sealed parts in the width direction of the heat-sealed part row is set in the range of 10 mm to 25 mm. It is set within. Further, in the laminated paper, the distance between the heat-sealed portions in the width direction is increased in proportion to the increase in the crepe rate of the crepe paper within the range of the heat-sealed portion spacing in the width direction.

In the product obtained by processing laminated paper according to the eighteenth aspect of the present invention, the laminated paper includes a pair of crepe paper serving as an outer layer sheet, and a thermal It consists of a nonwoven fabric as a fusible intermediate layer sheet. The laminated paper has a laminated structure in which the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. Further, in the laminated paper, when the crepe rate of the crepe paper is within the range of 20% to 26%, the heat-sealing part interval in the width direction of the heat-sealing part row is set within the range of 10 mm to 15 mm. However, when the crepe rate of the crepe paper is within the range of 26% to 30%, the interval between the heat-sealed parts in the width direction of the heat-sealed part row is set within the range of 15-25 mm. Further, in the laminated paper, the distance between the heat-sealed portions in the width direction is increased in proportion to the increase in the crepe rate of the crepe paper within the range of the heat-sealed portion spacing in the width direction.

In the laminated paper manufacturing apparatus according to the nineteenth aspect of the present invention, the laminated paper includes crepe paper as a pair of outer layer sheets and a heat-fusible paper disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric as an intermediate layer sheet. The laminated paper has a laminated structure in which the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. Further, in the laminated paper, when the crepe rate of the crepe paper is within the range of 20% to 26%, the heat-sealing part interval in the width direction of the heat-sealing part row is set within the range of 10 mm to 15 mm. However, when the crepe rate of the crepe paper is within the range of 26% to 30%, the heat-sealed part interval in the width direction of the heat-sealed part row is set within the range of 15 to 25 mm, and The distance between the heat-sealed portions in the width direction is increased in proportion to the increase in the crepe rate of the crepe paper within the range of the heat-sealed portion spacing. The laminated paper manufacturing apparatus includes a pair of first and second heat-sealing rollers for forming the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller.

In the heat seal roller of the laminated paper manufacturing apparatus according to the twentieth aspect of the present invention, the laminated paper is arranged in a laminated state between a pair of crepe papers as outer layer sheets and the pair of crepe papers. It consists of a nonwoven fabric as a heat-fusible intermediate layer sheet. The laminated paper has a laminated structure in which the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. Further, in the laminated paper, the crepe rate of the crepe paper is set within the range of 20% to 30%, and the heat-sealed part interval in the width direction of the heat-sealed part row is set in the range of 10 mm to 25 mm. and the widthwise heat-sealing part interval is increased in proportion to an increase in the crepe rate of the crepe paper within the range of the heat-sealing part interval in the width direction. Further, the heat seal roller of the laminated paper manufacturing apparatus includes a pair of first and second heat seal rollers for forming the heat sealing part row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller.

In the heat seal roller of the laminated paper manufacturing apparatus according to the twenty-first aspect of the present invention, the laminated paper is arranged in a laminated state between a pair of crepe papers as outer layer sheets and the pair of crepe papers. It consists of a nonwoven fabric as a heat-fusible intermediate layer sheet. The laminated paper has a laminated structure in which the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. Further, in the laminated paper, when the crepe rate of the crepe paper is within the range of 20% to 26%, the heat-sealing part interval in the width direction of the heat-sealing part row is set within the range of 10 mm to 15 mm. However, when the crepe rate of the crepe paper is within the range of 26% to 30%, the heat-sealed part interval in the width direction of the heat-sealed part row is set within the range of 15 to 25 mm, and Within the range of the heat-sealing part spacing, the heat-sealing part spacing in the width direction is increased in proportion to an increase in the crepe rate of the crepe paper. The heat seal roller of the laminated paper manufacturing apparatus includes a pair of first and second heat seal rollers for forming the heat sealing part row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller.

The heat sealing roller of the laminated paper manufacturing apparatus according to the twenty-second aspect of the present invention includes a first heat sealing roller and a second heat sealing roller forming a pair for forming the heat sealing part row. There is. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. The width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is set to be larger by a certain dimension than the width of the thermocompression bonding surface of the thermocompression bonding convexity of the first heat sealing roller, and When the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat sealing roller and the thermocompression bonding surface of the thermocompression bonding convexity of the second heat sealing roller are placed facing each other in a substantially close contact state, the first on both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the heat seal roller, so that certain width portions at both widthwise ends of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller are exposed. It has become. On both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat seal roller, a pair of side surfaces extend in an inclined manner at a predetermined inclination angle forming an obtuse angle with the thermocompression bonding surface.

A laminated paper manufacturing apparatus according to a twenty-third aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair to form the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Furthermore, in the laminated paper manufacturing apparatus, the roller lengths of the first heat seal roller and the second heat seal roller are set within a range of 1200 mm to 1500 mm. The roller diameters of the first heat seal roller and the second heat seal roller are set within a range of 180 mm to 300 mm. The pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-sealed portion of the laminated paper before heat-sealing, can be set to a value of 2 atmospheres or more.

A laminated paper manufacturing apparatus according to a twenty-fourth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend, resulting in a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat seal roller and a second heat seal roller that form a pair for forming the heat sealing part row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat sealing portions, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding protrusion is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, in the laminated paper manufacturing apparatus, the pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-sealing portion of the laminated paper before heat-sealing, is applied to the heat-sealing portion of the laminated paper before heat-sealing. When the roller length of the second heat seal roller is 1400 mm, the pressure can be set within the range of 5.5 to 7.0 atmospheres, and when the roller length of the first heat seal roller and the second heat seal roller is 1500 mm. , it can be freely set within the range of 7.5 to 8.0 atmospheres.

A laminated paper manufacturing apparatus according to a twenty-fifth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair to form the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Furthermore, in the laminated paper manufacturing apparatus, the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, can be freely set within the range of 175 to 200°C. There is. The temperature control of the first heat seal roller and the second heat seal roller is performed so that the thermocompression bonding temperature increases or decreases in proportion to the rotational speed of the first heat seal roller and the second heat seal roller. The rotation can be controlled freely.

A laminated paper manufacturing apparatus according to a twenty-sixth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair to form the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Furthermore, the laminated paper manufacturing apparatus maintains a constant thermocompression bonding temperature, which is a temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, and The first heat seal roller and the second heat seal roller are adjusted according to the base paper thickness so that the rotational speed of the second heat seal roller increases or decreases in proportion to the base paper thickness, which is the thickness of the laminated paper before heat sealing. The rotation speed can be increased or decreased to freely control the rotation.

A laminated paper manufacturing apparatus according to a twenty-seventh aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair to form the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Furthermore, the laminated paper manufacturing apparatus maintains a constant thermocompression bonding temperature, which is a temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, and The rotation speed of the first heat seal roller and the second heat seal roller are adjusted according to the nonwoven fabric thickness so that the rotational speed of the second heat seal roller increases or decreases in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat fusion. The rotation speed of the heat seal roller can be increased or decreased to freely control the rotation.

A laminated paper manufacturing apparatus according to a twenty-eighth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair to form the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Furthermore, the laminated paper manufacturing apparatus maintains the rotation speeds of the first heat seal roller and the second heat seal roller constant, and reduces the heat of the first heat seal roller and the second heat seal roller. The first heat-sealing roller and the second The temperature can be freely controlled by increasing or decreasing the thermocompression temperature of the heat seal roller.

A laminated paper manufacturing apparatus according to a twenty-ninth aspect of the present invention includes crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the pair of crepe papers. and a nonwoven fabric, the crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure. This is paper manufacturing equipment. The laminated paper manufacturing apparatus includes a first heat-sealing roller and a second heat-sealing roller that form a pair to form the heat-sealing section row. The first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat-sealing portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the seal roller. Further, a sealed space is formed inside each of the first heat seal roller and the second heat seal roller, and the inner space of the first heat seal roller and the second heat seal roller is It is a closed space maintained in a vacuum state. The laminated paper manufacturing apparatus connects external water supply means to the inner spaces of the first heat seal roller and the second heat seal roller, respectively, and supplies water from the water supply means to the first heat seal roller. Moisture is supplied to the internal space of the heat seal roller and the second heat seal roller, respectively, and when the first heat seal roller and the second heat seal roller are heated, the high temperature steam obtained by heating the moisture is supplied to the inner space of the heat seal roller and the second heat seal roller. The first heat-sealing roller and the second heat-sealing roller are attached to the inner surfaces of the first heat-sealing roller and the second heat-sealing roller in a thin layer or film form, and the layer or film of water vapor causes the first heat-sealing roller and the second heat-sealing roller to be attached. The entire roller is maintained at a uniform temperature over the entire circumferential direction and lengthwise direction of the first heat sealing roller and the second heat sealing roller, and the temperature of the thermocompression bonding surface of all the thermocompression bonding convex portions is maintained at a uniform temperature. It is possible to freely control the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first and second heat seal rollers, to be maintained uniformly and uniformly over the entire surface.

According to the laminated paper, the laminated paper manufacturing method, and the laminated paper manufacturing apparatus of the present invention, it is possible to provide a laminated paper that is equipped with high value-added functions and has dramatically improved performance compared to the past. can.

FIG. 1 is a plan view showing a first specific example (laminated paper having a pattern) of a laminated paper (laminated paper having a printed part) according to Embodiment 1 of the present invention. FIG. 2 is an enlarged plan view of the laminated paper according to Embodiment 1 of the present invention taken along line AA in FIG. 1, and (a) is a drying of the laminated paper according to Embodiment 1. (b) shows the swelling state of the laminated paper according to Embodiment 1 when it absorbs water. FIG. 3 is a plan view showing a second specific example of the laminated paper (laminated paper having an advertising section) according to the first embodiment of the present invention. FIG. 4 is a side view showing the laminated paper according to Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view showing the laminated paper according to Embodiment 1 of the present invention cut in the horizontal direction, and shows an enlarged portion of the printed layer within the circle indicated by the dashed-dotted line. FIG. 6 is a sectional view showing a laminated paper (laminated paper having a printed part) cut in the horizontal direction according to Embodiment 2 of the present invention, and shows a circular part (a part provided with a printed layer) indicated by a dashed line. Shown enlarged. FIG. 7 is an enlarged sectional view showing a laminated paper (laminated paper having a plurality of intermediate layer sheets) cut in the transverse direction according to Embodiment 3 of the present invention. FIG. 8 is an enlarged sectional view showing a laminated paper (laminated paper having a water-impermeable intermediate layer sheet) cut in the transverse direction according to Embodiment 4 of the present invention. FIG. 9 is a side view schematically showing a laminated paper manufacturing apparatus (heat seal roller type laminated paper manufacturing apparatus) according to Embodiment 5 of the present invention. FIG. 10 is a side view schematically showing a heat seal roller of a laminated paper manufacturing apparatus according to Embodiment 5 of the present invention, in which a circular portion indicated by a chain line is enlarged to explain the linear thermocompression bonding convex portion. Shown. FIG. 11 is an explanatory diagram for explaining the process of forming a linear heat-sealing part in a laminated paper manufacturing apparatus according to Embodiment 5 of the present invention, and is an explanatory diagram showing a heat seal roller portion in a side view. . FIG. 12 is an explanatory diagram for explaining the process of forming a linear heat-sealed part in a laminated paper manufacturing apparatus according to Embodiment 5 of the present invention. FIG. 3 is an explanatory diagram showing the internal structure thereof in cross section. FIG. 13 is an explanatory diagram showing the configuration of the linear thermocompression bonding convex portion of the heat seal roller of the laminated paper manufacturing apparatus according to Embodiment 5 of the present invention, and the upper diagram shows a part of the pair of heat seal rollers. The middle figure is a circular part shown by a dashed-dotted line in the upper figure to explain the state in which the linear thermocompression bonding protrusions of a pair of heat seal rollers mesh with each other and press the raw material sheet of laminated paper. is an enlarged cross-sectional view, and the lower figure shows the circular portion shown by the dashed-dotted line in the center of the middle figure in order to explain the shape of the linear thermocompression bonding convex portion of the pair of heat seal rollers. FIG. 2 is an enlarged cross-sectional view. FIG. 14 shows an example of changing the width between the linear heat-sealed parts according to the crepe rate in the laminated paper according to Embodiment 1 of the present invention, and (a) corresponds to the first crepe rate. FIG. 4 is an enlarged plan view of a part of the laminated paper showing the case where the interval (width) between adjacent linear heat-sealed parts is set as the first width, and (b) corresponds to the second crepe rate. FIG. 3 is an enlarged plan view of a part of the laminated paper showing a case where the interval (width) between adjacent linear heat-sealed parts is set to a second width. FIG. 15 is a graph for explaining a preferred specific example of a method for manufacturing laminated paper using the laminated paper manufacturing apparatus according to Embodiment 5 of the present invention, and (a) is a graph for explaining the laminated paper manufacturing method using the laminated paper manufacturing apparatus according to Embodiment 5 of the present invention. Explanatory diagram showing the relationship between the feeding speed of paper raw material sheets and the thermocompression bonding temperature of the heat seal roller of the laminated paper manufacturing device, (b) The thermocompression bonding temperature of the heat seal roller of the laminated paper manufacturing device and lamination An explanatory diagram showing the relationship between the thickness of the base paper (base paper thickness) of the raw material sheet of paper, (c) is the feeding speed of the raw material sheet of laminated paper by the laminated paper manufacturing device and the base paper thickness of the raw material sheet of laminated paper (d) is an explanatory diagram showing the relationship between the thermocompression bonding temperature of the heat seal roller of the laminated paper manufacturing device and the thickness of the nonwoven fabric (nonwoven fabric thickness) of the raw material sheet of the laminated paper. It is. FIG. 16 is a side view schematically showing a laminated paper manufacturing apparatus (high frequency sewing machine type laminated paper manufacturing apparatus) according to Embodiment 6 of the present invention.

Hereinafter, a mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described. Note that throughout each embodiment, the same members, elements, or portions are designated by the same reference numerals, and their explanations will be omitted.

Embodiment 1 (Laminated paper with printing portion provided on nonwoven fabric)
[Overall composition of laminated paper]
The laminated paper of the first embodiment is embodied in a laminated paper 10 having a printing section, as shown in FIGS. 1 to 5. First, the overall structure of the laminated paper 10 will be described. As shown in FIG. It is formed into a sheet shape with a rectangular shape. On the other hand, in a side view (or cross-sectional view) of the laminated paper 10, as shown in the side view of FIG. It has a laminated structure consisting of a non-woven fabric 2 as an intermediate layer sheet which constitutes an intermediate layer interposed between. Furthermore, the laminated paper 10 maintains the laminated structure by thermally fusing one and the other of the pair of crepe papers 1 to one side and the other side of the nonwoven fabric 2 at the same location, respectively. . That is, the laminated paper 10 has a first heat-sealing part 11a and a second heat-sealing part 11a, which respectively constitute a heat-sealing part row 11 (a first heat-sealing part row 11A and a second heat-sealing part row 11B). By heat-sealing the pair of crepe papers 1 to the non-woven fabric 2 at each location of the heat-sealing portion 11b, the pair of crepe papers 1 are heat-sealed to the non-woven fabric 2 at the same location.

[Heat fusion part]
To explain the heat-sealing parts 11 in detail, the laminated paper 10 has a broken line-shaped heat-sealing part array 11 in the longitudinal direction of the laminated paper 10 (the direction in which the base paper is supplied during manufacturing, as shown in FIG. 1). The heat-sealing portions are formed so as to extend over the entire length (in the vertical direction), thereby configuring one row of 11 heat-sealing portions. In addition, the laminated paper 10 has multiple rows of heat-sealing parts 11 spaced apart from each other and parallel to each other in the width direction of the laminated paper 10 (a direction perpendicular to the base paper supply direction during manufacturing). They are continuously arranged side by side throughout the entire length (left and right direction in FIG. 1). As a result, the laminated paper 10 has linear band-shaped non-fused portions 12 between adjacent rows of heat-fused portions 11 . That is, in the laminated paper 10, a large number of rows of non-fused portions 12 are continuously arranged in parallel over the entire width direction so as to be parallel to each other at regular intervals. In the laminated paper 10, the multiple rows of heat-sealing parts 11 are first rows in which the first heat-sealing parts 11a are linearly arranged at regular intervals in the length direction of the laminated paper 10. and a second row of heat-sealing parts 11B formed by arranging second heat-sealing parts 11b linearly at regular intervals in the length direction of the laminated paper 10. It consists of That is, the first row of heat-sealing parts 11A consisting of the first heat-sealing parts 11a and the second row of heat-sealing parts 11B consisting of the second heat-sealing parts 11b are laminated. They are arranged alternately in the width direction of the paper 10 at regular intervals. Further, as shown in FIG. 2, the first thermally fused portion 11a constitutes a fused portion in the form of a straight line segment having a predetermined length and a predetermined width in the laminated paper 10. By linearly arranging first heat-sealing parts 11a having a constant length and width at regular intervals in the length direction, a broken-line first row of heat-sealing parts 11A is configured. The second thermally fused portion 11b constitutes a linear segment-shaped fused portion having the same length and width as the first thermally fused portion 11a. By linearly arranging the second heat-sealing parts 11b at regular intervals in the length direction, the heat-sealing parts in the second row form a broken line shape similar to the heat-sealing part row 11A in the first row. A part sequence 11B is configured. The first heat-sealing section 11a of the first heat-sealing section row 11A and the second heat-sealing section 11b of the second heat-sealing section row 11B (that is, adjacent The heat-sealing section rows 11A and 11B in the first row are such that the longitudinal center position of the first heat-sealing section 11a of the first heat-sealing section row 11A is the same as the heat-sealing section row 11A in the first row. The positions of the laminated papers 10 in the length direction are shifted from each other so as to be located at an intermediate position of the gap between the adjacent second heat-sealing parts 11b of the adhesive part row 11B.

[Non-fused part]
As shown in FIG. 4, the laminated paper 10 has a linear strip-shaped non-fused portion 12 between two adjacent heat-fused portion rows 11. expands after the laminated paper 10 absorbs water to form an expanded portion. Specifically, as shown in FIGS. 1 and 2, the non-fused portion 12 includes a wide expansion portion 12a (which forms a wide expansion portion after the laminated paper 10 absorbs water) and a wide expansion portion 12a (which constitutes a wide expansion portion after the laminated paper 10 absorbs water) The narrow inflatable portion 12b constitutes a narrow inflatable portion after being hydrated. More specifically, the wide expansion portions 12a are arranged in a range in which the adjacent first heat-sealing section row 11A and the second heat-sealing section row 11B do not overlap (non-overlapping range), respectively. It is provided on the laminated paper 10 as a substantially rectangular portion having the length of the non-overlapping range and the width of the non-overlapping range. For example, in FIG. 2, the wide expansion part 12a is the first heat-sealing part 11a of the first heat-sealing part row 11A, which is the second row from the left, and the second heat-sealing part 11a of the first heat-sealing part row 11A, which is the second row from the left. The second heat-sealing parts 11b of the heat-sealing part row 11B are vertically adjacent to each other in the heat-sealing part row 11A of this first row in the range of the longitudinally intermediate portions that do not overlap with each other. In the length range between the ends (between one end and the other end) of the first heat-sealing part 11a, and from the right edge of the heat-sealing part row 11A of the first row to the heat of the second row. The left edge of another first heat-sealing section row 11A (in the case of FIG. 2, the first heat-sealing section row 11A, which is the fourth row from the left) facing across the welding section row 11B. It is provided in a substantially rectangular shape over a width range up to. On the other hand, each of the narrow expansion portions 12b is arranged in a range (overlapping range) in which the adjacent heat-sealing section row 11A of the first row and the heat-sealing section row 11A of the second row overlap (overlapping range). It is provided on the laminated paper 10 as a small approximately rectangular portion having a length of , and a width of the overlapping range. For example, in FIG. 2, the narrow expansion part 12b is connected to the first heat-sealing part 11a of the first heat-sealing part row 11A, which is the second row from the left, and the second heat-sealing part 11a, which is the third row from the left. The first heat-sealing portion 11b of the heat-sealing portion row 11B of the first row overlaps with the second heat-sealing portion 11b of the heat-sealing portion row 11B of the first row. A length range from one end (for example, the upper end) of the section 11a to the other end (lower end) of the second heat-sealing section 11b of the second row of heat-sealing sections 11B adjacent thereto, and It is provided in a substantially rectangular shape over a width range from the right edge of the first heat sealing section row 11A to the left edge of the second heat sealing section row 11B.

[Wrinkles in non-fused area (expanded area)]
In the laminated paper 10 , the outer layer of crepe paper 1 and the intermediate layer of nonwoven fabric 2 are not bonded at all in the non-fused portion 12 , and the non-fused portion 12 of the crepe paper 1 is connected to the heat-fused portion row 11 . As parts of the heat-sealed parts 11a and 11b that are not constrained (that is, parts that are not fixed to the nonwoven fabric 2), they can move and deform in the thickness direction with respect to the nonwoven fabric 2. In particular, in the portion of the non-fused portion 12 that is close to the heat-fused portion row 11 (that is, the boundary portion with the heat-fused portion row 11), the amount by which the crepe paper 1 can move is relatively small; In a portion of the non-fused portion 12 that is separated from the heat-fused portion row 11 by a large amount (that is, the central portion between adjacent heat-fused portion rows 11), the amount by which the crepe paper 1 can be moved is relatively small. The movable amount of the crepe paper 1 becomes maximum at the center position between the adjacent rows of heat-sealing parts 11. In the laminated paper 10, each non-fused part 12 (that is, each wide expansion part 12a and each narrow width expansion part 12b) of the crepe paper 1 serving as both outer layers, before the first water absorption of the laminated paper 10, , a large number of crepe wrinkles, which are the original small wrinkles of the crepe paper 1, appear. The crepe wrinkles are small wrinkles extending in the width direction of the laminated paper 10 (and the width direction of the crepe paper 1), and are formed when the crepe paper 1 is manufactured.

On the other hand, after the laminated paper 10 is hydrated for the first time, in each non-fused part 12 (wide expansion part 12a and narrow expansion part 12b) of the crepe paper 1, the crepe paper 1 is bonded through the crepe wrinkles. By expanding, that is, by expanding the crepe wrinkles, which are small wrinkles, due to moisture, as shown in FIG. , hereinafter referred to as "expansion wrinkles") are formed. In this case, in the crepe paper 1, a plurality of adjacent crepe wrinkles expand with water and become integrated, forming one expansion wrinkle corresponding to the plurality of crepe wrinkles. It can be considered that all or part of the original crepe wrinkles disappear. In addition, the expansion wrinkles of the crepe paper 1 become large wrinkles (hereinafter referred to as "large expansion wrinkles") that extend over almost the entire width direction of the wide expansion part 12a, and the expansion wrinkles in the wide expansion part 12a become large wrinkles (hereinafter referred to as "large expansion wrinkles"). 12b, wrinkles of an intermediate size (hereinafter referred to as "mid-expansion wrinkles") extend over almost the entire widthwise direction of the narrow expansion part 12b, and both the large expansion wrinkles and the mid-expansion wrinkles are smaller than the crepe wrinkles. becomes a big wrinkle. Note that FIG. 14 shows examples of these large expansion wrinkles 12aw and medium expansion wrinkles 12bw. Furthermore, in the non-fused portion 12 of the crepe paper 1, not all crepe wrinkles transform into the expanded large wrinkles or expanded medium wrinkles, and some crepe wrinkles remain as they are (in their original small wrinkle state). Remains on paper 1. In addition, the present inventor has found that in the laminated paper 10, in the non-fused portion 12 of the crepe paper 1, there are two types of large expanded wrinkles in the wide expanded portion 12a. That is, the present inventor has determined that, as the expanded large wrinkles, a first type of expanded large wrinkles (hereinafter referred to as " It has been found that there are two types of large and large wrinkles (referred to as "mixed large and small wrinkles") and a second type of expanded large wrinkles in which the crepe wrinkles have completely disappeared (hereinafter referred to as "complete large wrinkles"). Similarly, in the laminated paper 10, the present inventors have found that in the non-fused portion 12 of the crepe paper 1, there are two types of expansion wrinkles in the narrow expansion portion 12b. That is, the present inventor has determined that, as the expanded mid-wrinkle, a first type of expanded mid-wrinkle (hereinafter referred to as " It has been found that there are two types of wrinkles: medium-sized mixed wrinkles (hereinafter referred to as "mixed small and medium wrinkles"), and a second type of expanded medium wrinkles in which crepe wrinkles have completely disappeared (hereinafter referred to as "complete medium wrinkles"). Furthermore, in the laminated paper 10, in the crepe paper 1, these expanded large wrinkles, expanded medium wrinkles, large and small mixed wrinkles, medium and small mixed wrinkles, completely large wrinkles, and completely medium wrinkles are caused by drying of the laminated paper 10 after being hydrated. Even after that, it basically remains as it is.

As a result, in the laminated paper 10 after being hydrated, the expanded large wrinkles, expanded medium wrinkles, mixed large and small wrinkles, mixed medium and small wrinkles, completely large wrinkles, and completely medium wrinkles are formed both when hydrated and when dried after being hydrated. In particular, the set of the expanded large wrinkles, mixed large and small wrinkles, and complete large wrinkles, as well as the set of expanded medium wrinkles, medium and small mixed wrinkles, and complete medium wrinkles, are present in the wide expanded portion 12a and the narrow expanded portion 12b. They exist alternately and exhibit a unique effect of increasing the sense of volume in a well-balanced manner throughout both sides of the laminated paper 10.

[Dimensions of heat-sealed parts and spacing between heat-sealed parts]
In the laminated paper 10, each row of heat-sealing portions 11 has first heat-sealing portions 11a in the shape of a straight line segment having a constant length and a constant width arranged in a broken line shape at regular intervals in the length direction. In addition, the second heat-sealed portion 11b in the shape of a straight line having a constant length and a constant width is shifted in position with respect to the first heat-sealed portion 11a (that is, each of the second heat-sealed portions 11b is The first heat-sealed parts 11b are arranged in a broken line at regular intervals in the length direction so that the middle position of the second heat-sealed part 11b matches the middle position of the interval between the first heat-sealed parts 11a. has been done. Moreover, since the length and width of the first heat-sealing part 11a and the second heat-sealing part 11b are set to be the same, the first heat-sealing part 11a and the second heat-sealing part 11b are the same. The portions 11b have the same configuration except that they are arranged at different positions in the length direction as described above. On the other hand, in the laminated paper 10, the length and width of the first heat-sealed portion 11a and the second heat-sealed portion 11b are set to a predetermined length and a predetermined width. That is, the length and/or width of each of the first heat-sealed parts 11a and each of the second heat-sealed parts 11b is appropriately set according to the external dimensions of one sheet of laminated paper 10 when used. (That is, it is appropriately set according to the vertical dimension, horizontal dimension, etc. determined according to the use of the laminated paper 10).

Specifically, for example, when the laminated paper 10 is used for paper towels, the length of each heat-sealed portion 11a, 11b is set to an arbitrary value within the range of 35 mm to 45 mm, and preferably, It is set to an arbitrary value within the range of 38 mm to 42 mm, and more preferably to a value of about 40 mm. Further, the width of each heat-sealed portion 11a, 11b is set to an arbitrary value within the range of 1.5 mm to 2.5 mm, preferably about 2 mm. The length-to-width ratio (aspect ratio) of each heat-fused portion 11a, 11b is preferably set to an arbitrary ratio within the range of 13:1 to 23:1, and is set to approximately 20:1. It is even more preferable. That is, it is preferable that the width of each of the heat-sealed parts 11a and 11b is set to about 5% of the length (or the length is set to about 20 times the width). Furthermore, in the heat-sealing portions 11 of each row of the laminated paper 10, the distance between the heat-sealing portions 11A and 11b adjacent in the length direction (hereinafter referred to as the “longitudinal heat-sealing portion spacing”) is , 18 mm to 22 mm, preferably approximately 20 mm. It is preferable that the ratio of the length of each of the heat-sealed parts 11a, 11b and the interval between the heat-sealed parts is set to 2:1. That is, for the heat-sealed parts 11 in each row, the heat-sealed part spacing in the longitudinal direction is set to approximately 50% of the length of the heat-sealed parts 11a, 11b (or It is preferable to set the length to approximately twice the distance between the heat-sealed parts. In this way, while maintaining good integral bonding force between the crepe paper 1 and the nonwoven fabric 2 by the heat-sealed part array 11, the expansion coefficient of the crepe 1 by the non-fused parts 12 is maximized, and the laminated paper 10 The sense of volume can be maintained in the best condition.

[Edge shape of heat-fused part]
Further, each of the heat-sealed parts 11a and 11b has both lengthwise ends curved in a semicircular plane. As a result, compared to the case where the end of each heat-sealed part is rectangular (that is, the corner angle of the end is a right-angled corner), the crepe paper 1 It is possible to effectively prevent the nonwoven fabric 2 from peeling off from the nonwoven fabric 2. In addition, as will be described later, in this case, both ends in the length direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the heat seal roller constituting the heat sealing portion forming means in the laminated paper manufacturing apparatus are also Because the shape is circular and curved, the heat generated by the heat-sealing roller's heat-sealing surface is lower than when the ends of each heat-sealing surface are rectangular (i.e., the corners of the edges are right angles). The raw material sheet of the crepe paper 1, which is subjected to the pressing force from the thermocompression bonding surface during the formation of the fused portion, will not be damaged due to excessive pressure concentration at the end of the thermocompression bonding surface, improving manufacturing yield. In addition, the quality of the laminated paper 10 can be improved. (In other words, as will be described later, when the edge of the thermocompression bonding surface forms a right-angled corner, stress is applied to the raw material sheet of the crepe paper 1 at that corner, compared to when the thermocompression bonding surface has a curved shape. (There is a high possibility that the raw material sheet will be damaged at the corners.)

[Crepe rate of crepe paper]
In the laminated paper 10, the crepe rate of the crepe paper 1 is set to an arbitrary value within the range of 20% to 40%, preferably set to an arbitrary value within the range of 20% to 30%. More preferably, it is set to a value of about 30%. That is, if the crepe ratio of the crepe paper 1 is less than 20%, the crepe paper 1 will not expand or swell sufficiently when the laminated paper 10 absorbs water after being laminated and bonded to the nonwoven fabric 2 to form the laminated paper 10. There is a big possibility. On the other hand, if the crepe rate of the crepe 1 is greater than 40%, it becomes difficult to form the raw material sheet with a paper machine when manufacturing the raw material sheet of the crepe paper 1 (that is, during paper making).

[Crepe ratio of crepe paper and spacing of heat-sealed parts]
Further, as shown in FIG. 14, in the laminated paper 10, the arrangement intervals LW1 and LW2 of the heat sealing part rows 11 (that is, the interval between the width direction center lines of the adjacent heat sealing part rows 11, hereinafter referred to as "width The distance between the heat-sealed parts in the direction is set to an arbitrary value within a predetermined range depending on the range of the crepe rate of the crepe paper 1. Specifically, when the crepe rate of crepe paper 1 is within the range of 20% to 26%, the widthwise heat-sealed part interval is the first widthwise (relatively small dimension) It is preferable to set the heat-sealing part interval LW1 to an arbitrary value within the range of 10 mm to 15 mm (that is, it is preferable to set the lower limit to 10 mm and the upper limit to 15 mm), and Within the range of the heat-sealed part spacing, it is preferable to increase the heat-sealed part spacing in the width direction in proportion to the increase in crepe rate. In addition, when the crepe rate of crepe paper 1 is within the range of 26% to 30%, the interval between the heat-sealed parts in the width direction is smaller than that of the heat-sealed part in the second width direction (which is relatively large). It is preferable to set the part spacing LW2 to an arbitrary value within the range of 15 to 25 mm (that is, it is preferable that the lower limit is 15 mm and the upper limit is 25 mm), and the heat fusion in the width direction Within the range of the part spacing, it is preferable to increase the heat-sealed part spacing in the width direction in proportion to the increase in crepe rate. If the heat-sealed portion spacing LW1, LW2 in the width direction of the laminated paper 10 is smaller than the lower limit, there is a high possibility that the crepe paper 1 will not expand or swell sufficiently when the laminated paper 10 absorbs water. On the other hand, if the spacing LW1, LW2 of the heat-sealed parts in the width direction of the laminated paper 10 is larger than the upper limit value, when the laminated paper 10 absorbs water, the expansion large wrinkles, expansion medium wrinkles, etc. will be larger than the expected expansion rate. There is a risk that the large expansion wrinkles, medium expansion wrinkles, etc. may become loose due to excessive expansion or elongation, and the quality of the laminated paper 10 may be degraded. For example, if the heat-sealed part spacing LW1, LW2 in the width direction of the laminated paper 10 is set to 30 mm or more (that is, a value that greatly exceeds 25 mm, specifically, a value that is 125% or more of 25 mm), the laminated paper The present inventor has confirmed through experiments that when water is added to No. 10, the expanded large wrinkles, expanded medium wrinkles, etc. expand or expand too much and become loose. That is, even if the crepe rate of the crepe paper 1 is 30%, which is the maximum value in the above range, if the widthwise heat-sealing part spacing LW1, LW2 of the laminated paper 10 is set to a value of 30 mm or more, the When hydrated, the large expanded wrinkles, medium wrinkles, etc. expand or stretch too much and become loose.

[Pattern section as printing section]
As shown in FIG. 1, the laminated paper 10 can be embodied as a laminated paper 10 having a pattern section 13 as a first specific example of a printing section. In detail, the pattern section 13 can have a structure in which unit patterns 13a and 13b having the same motif are arranged over the entire surface or a certain range of the laminated paper 10, for example, as shown in FIG. In FIG. 2, for example, the unit pattern 13a constitutes a pattern of a predetermined size with a motif of a corolla (an aggregate of petals) of a predetermined type of flower, while the unit pattern 13b is a pattern of the same corolla as the unit pattern 13a. The motif constitutes a pattern larger in size than the unit pattern 13a. Note that the configuration of the pattern portion 13 is not limited to that shown in FIG. 2, and may be configured using any pattern. That is, the pattern section 13 can use a unit pattern with a different motif from the unit patterns 13a and 13b in FIG. It is also possible to create any combination of patterns. Alternatively, the pattern section 13 may have a structure using a pattern consisting of repeated pictures, such as a lattice pattern or a checkered pattern, in addition to the structure using individual unit patterns as shown in FIG. Alternatively, the pattern portion 13 may be a monochrome pattern (full-surface monochrome pattern) formed by printing an arbitrary single color different from the original base color of the laminated paper 10 (in particular, the base color of the crepe paper 1) on the entire surface of the laminated paper 10. Alternatively, a monochromatic pattern (partially monochromatic pattern) may be created by printing an arbitrary single color different from the original base color of the laminated paper 10 on a partial range of the laminated paper 10. Alternatively, the pattern portion 13 may be a pattern (hereinafter referred to as a "multi-color pattern") formed by randomly printing two or more different colors on the entire surface or a partial area of the laminated paper 10. . In short, the pattern section 13 can be formed using any structure as long as it can give a separate visual effect to the laminated paper 10 by printing an arbitrary color on the laminated paper 10 that is different from the base color of the normal laminated paper 10. It can be done.

[Advertising Department as Printing Department]
Further, as shown in FIG. 3, the laminated paper 10 can be embodied as a laminated paper 10 having an advertising section 14 as a second specific example of the printing section. In detail, the advertising section 14 can be configured to have, for example, an advertising space 14b and an advertising space 14c within the inner range of the outer frame 14a. In this case, the advertising unit 14 prints, for example, the title, copy, etc. of specific advertising content in the advertising space 14b, and prints details of the advertising content (product description, pattern corresponding to the product, etc.) in the advertising space 14c. It can be configured as follows. In addition, in FIG. 3, the outlines of the outer frame 14a, the advertising frame 14b, and the advertising frame 14c of the advertising section 14 are drawn by broken lines, respectively, but this is only the outline of the outer frame 14a, the advertising space 14b, and the advertising space 14c. This is a convenience for explaining the range of the advertising space 14c (of course, it is also possible to draw them intentionally), and usually the outer frame 14a, the advertising space 14b, and the advertising space are drawn on the laminated paper 10. The outline of 14c is never drawn. Further, the outer frame 14a of the advertising section 14 is also provided for convenience to show an example of advertisement content, and all of the advertising frames 14a and 14b can be implemented without providing the outer frame 14a. Further, the number of advertising frames 14a and 14b may be one, or an arbitrary number of two or more frames. Furthermore, the configuration of the advertising section 14 is not limited to that shown in FIG. 2, and can be any configuration. That is, the advertising unit 14 configures any advertisement content or content printed in any expression mode or format as long as it is advertisement content printed on advertising print media such as regular flyers or promotional items. be able to. Further, as the contents to be printed on the advertising section 14, arbitrary items such as a company name, a logo mark, a brand, etc. can be printed. Furthermore, the laminated paper 10 equipped with a printing section can be used, for example, in novelty goods such as paper towels that are distributed in large quantities for the purpose of announcing and advertising various information such as sale information at retail stores and campaign information at companies. It can also be applied to novelty goods such as paper towels that are distributed in large quantities for the purpose of announcing and disseminating various events such as the Olympics and expositions.

[Structure of printing section]
Next, the structure of the printing section of the laminated paper 10 will be explained. As shown in the specific examples of FIG. 5, FIG. 6, FIG. 7, and FIG. One of its main features is that a printing section is printed on the surface using a predetermined printing ink. In addition, the laminated paper 10 is such that even when the laminated paper 10 is dry, the printed portion is visible from the outside through the crepe paper 1 of the outer layer sheet of the laminated paper 10, and when the laminated paper 10 contains water, Out of the crepe paper 1 as the outer layer sheet, at least the outer layer on the side where the printing section is provided, so that the transparency from the crepe 1 as the outer layer sheet of the printing section increases and the visibility from the outside increases. Another main feature is that the thickness (basis weight) of the crepe paper 1 as a sheet is set, and if necessary, the material (paper quality) is also set together with the thickness. Specifically, in the first embodiment, the laminated paper 10 includes a pair of crepe papers 1 as outer layers and one or more sheets of nonwoven fabric 2 arranged in a laminated state between the pair of crepe papers 1. It has a multi-layer structure (multi-layer structure of three or more layers), and its inner surface (i.e., the inner surface of the laminated paper 10) faces one crepe paper 1 as an outer layer sheet. The printing part is provided on the surface of the nonwoven fabric 2, and the crepe paper 1 is bonded to the nonwoven fabric 2 by heat sealing and pressure bonding using the heat sealing part 1.

[Printing section installed on non-woven fabric]
For example, as shown in FIG. 5, the printing section includes a printing layer 2a provided on one surface (one side in the thickness direction) of a nonwoven fabric 2 serving as an intermediate layer sheet. That is, the nonwoven fabric 2 of the laminated paper 10 is configured as an intermediate layer sheet made of a material on which the printing section can be printed, and a desired pattern section 13 or advertising section is printed on one side of the nonwoven fabric 2 using a predetermined printing ink. By providing 14 by printing, a printing section is constructed. In addition, in FIG. 5, the printing layer 2a is drawn as a thin layer on one surface of the nonwoven fabric 2 for convenience of explanation, but in reality, the printing ink constituting the printing layer 2a is Since the printing ink penetrates into the inside of the nonwoven fabric 2 from one side of the nonwoven fabric 2 to form a predetermined pattern of the printing part, the printing ink completely penetrates into the inside of the nonwoven fabric 2 and the printing ink penetrates into the one side of the nonwoven fabric 2. In some cases, no ink layer is formed, or in other cases, while some of the printing ink penetrates into the nonwoven fabric 2, a remaining printing ink layer is formed on one side of the nonwoven fabric 2. Further, after the printing ink has completely penetrated into the inside of the nonwoven fabric 2, it may be exposed from the other side of the nonwoven fabric 2, and a layer of printing ink may also be formed on the other side of the nonwoven fabric 2. In any case, the printed portion of the laminated paper 10 is drawn with the highest density on one surface of the nonwoven fabric 2 serving as the printing surface, and is visually recognized as the printed layer 2a. That is, the pattern portion 13 and advertisement portion 14 of the various laminated papers 10 described above are printed on one side of the nonwoven fabric 2 using any printing ink and any printing method according to the structure of the pattern, advertising content, etc. It is provided by printing on the side of

[Composition of printing layer (printing ink and printing method)]
Here, the printed layer 2a of the printed part of the laminated paper 10 is formed on one side of the nonwoven fabric 2 by any printing method using any printing ink, but preferably, the printed part is printed As a method, the printed portion is formed using flexo printing technology, and the printed portion is formed using water-based ink or UV (ultraviolet curable) ink as the printing ink. In detail, flexographic printing is a type of letterpress printing that uses a direct transfer method, and uses rubber or synthetic resin as the plate material, and uses liquid ink such as water-based ink or UV ink as printing ink. However, the printing layer 2a of the printing part of the laminated paper 10 is printed by adjusting the concentration of water-based ink or UV ink, and then printing a predetermined pattern part 13 or advertisement part 14 on one side of the nonwoven fabric 2. It makes up the department. The laminated paper 10 is formed by interposing the nonwoven fabric 2 having the printed portion between a pair of crepe papers 1 and heat-sealing them together using the heat-sealing section array 11 to integrate them. There is. Even when the printing object of the printing section is a nonwoven fabric 2 having a finely uneven surface, this laminated paper 10 can be printed as desired as a printing section using a plate having elasticity and shape followability of flexographic printing. The pattern section 13 and advertisement section 14 can be clearly printed. As a result, in the laminated paper 10 manufactured using the nonwoven fabric 2 having a printed portion, the printed portion is visible from the outside with good print quality through the crepe paper 1, especially in its wet state. Furthermore, in this laminated paper 10, since the printing ink in the printed portion of the nonwoven fabric 2 is made of water-based ink or UV ink, the printing ink does not contain an organic solvent. As a result, the laminated paper 10 manufactured using the nonwoven fabric 2 having a printed part is not affected by the volatilization of organic solvents unlike printing ink using organic solvents, and is particularly suitable for sanitary purposes such as paper towels. When applied to supplies, the product becomes user and environment friendly. Note that in printing the laminated paper 10 onto the nonwoven fabric 2, for example, a flexo printing machine capable of printing up to seven colors is used, and the density of printing ink of each color is adjusted.

[Material of non-woven fabric]
On the other hand, in the laminated paper 10 according to Embodiment 1 shown in FIG. The non-woven fabric is made of a material that can be reliably heat-sealed and bonded at the fused portion. As a result, one side of the laminated paper 10 (typically, when the laminated paper 10 is applied to a paper towel, one side of the laminated paper that is exposed on the outer side of the paper towel, that is, the side of the paper towel) A pattern portion 13 and an advertisement portion 14 can be provided by printing on one side of the nonwoven fabric 2 which will be placed on the front side), and crepe paper 1 serving as a pair of outer layers is placed on both sides of the nonwoven fabric 2. A laminated paper 10 having a multi-layer structure (three-layer structure in the case of FIG. 5) can be formed by adhering to the paper.

[Thickness of nonwoven fabric]
In addition, in the laminated paper 10, as described above, the nonwoven fabric 2 as the intermediate layer sheet has both printability that allows the printing portion to be printed and heat-fusibility that allows the crepe paper to be heat-fused. However, in order to have both printability and heat sealability, it is preferable to use a nonwoven fabric having a thickness of any value within a predetermined range. Specifically, for example, conventional nonwoven paper towels use a sheet-shaped nonwoven fabric with a basis weight of 45 to 70 g/cm 2 as a raw material sheet. On the other hand, the laminated paper 10 of this embodiment uses a pair of crepe paper 1 and a nonwoven fabric 2 as raw material sheets, and also uses a basis weight of any value within the range of 15 to 25 g/m ² as the nonwoven fabric 2. It is preferable to use a nonwoven fabric having a thickness, and it is more preferable to have a thickness of any value within the range of basis weight 18 to 22 g/m ² , and any value within the range of basis weight 18 to 20 g/m ² It is more preferable to have a thickness of 20 g/m 2 , and most preferably a thickness of 20 g/m ² . That is, in the laminated paper 10, if the thickness of the nonwoven fabric 2 is larger than the basis weight of 25 g/ ^m2 , the laminated paper 10 may lack flexibility, and for example, when the laminated paper 10 is applied to paper towels etc. , there is a possibility that the user of the laminated paper 10 feels hard to the touch. Furthermore, if the thickness of the nonwoven fabric 2 is larger than the basis weight of 25 g/m ² , the strength will be higher than necessary, causing an unnecessary increase in costs. Furthermore, during the manufacturing process of the laminated paper 10, for example, in the step of heat-sealing the crepe paper 1 to the nonwoven fabric 2 using a pair of heat sealing rollers, the nonwoven fabric 2 is transferred from the heat sealing roller having a heat source through one of the crepe papers 1. When transferring heat to the nonwoven fabric 2, as the thickness of the nonwoven fabric 2 increases, the heat transfer efficiency decreases, so if the heat fusion between one crepe paper 1 and one side of the nonwoven fabric 2 can be performed well. However, there is a possibility that the heat fusion between the other crepe paper 1 and the other surface of the nonwoven fabric is not sufficiently performed, and the adhesive force of the nonwoven fabric 2 to the other crepe paper 1 is insufficient. On the other hand, if the thickness of the nonwoven fabric 2 is smaller than the basis weight of 15 g/m ² , the amount of thermoplastic resin contained in the nonwoven fabric 2, which is a material for developing thermal adhesive strength, is relatively reduced, and both sides of the nonwoven fabric 2 are When heat-sealing the crepe paper 1 to the paper, sufficient heat-sealing force may not be obtained, and the overall stiffness of the laminated paper 10 may become weak, making it difficult to apply the laminated paper 10 to paper towels, etc. In this case, the user's feeling of using the laminated paper 10 may be adversely affected.

[Raw material fiber for nonwoven fabric]
Furthermore, when the thickness of the non-woven fabric 2 is set to a value within the above-mentioned predetermined range in order to have both the above-mentioned printability and heat-fusibility, the thickness is particularly set to a value on the lower limit value side within the above-mentioned predetermined range. (For example, when the thickness is set to a value of 15 g/m ² , 18 g/m ^{2 ,} etc.), it is preferable to use a nonwoven fabric made of a core-sheath composite fiber. That is, when the thickness of the nonwoven fabric 2 becomes relatively small (that is, when it becomes a value on the lower limit side within the above-mentioned predetermined range), the entire laminated paper 10 is However, by using a non-woven fabric made of core-sheath composite fibers, when the crepe paper 1 is heat-sealed to the non-woven fabric 2, the sheath portion of the core-sheath composite fibers is is softened or melted at a heating temperature of Since the strength and stiffness of the laminated paper 10 is maintained, the strength and stiffness of the entire laminated paper 10 can also be maintained, and the volume of the laminated paper 10 can also be maintained with the thin nonwoven fabric 2.

[Thickness of crepe paper]
In the laminated paper 10, the crepe paper 1 has a thickness of an arbitrary value within a predetermined range to achieve a predetermined transmittance (permeability). Specifically, one crepe paper 1 that is overlapped and bonded to one side of the nonwoven fabric 2 (that is, the side on which the printing section is provided) is bonded to the nonwoven fabric through the crepe paper 1 while the laminated paper 10 is in a dry state. The transmittance is such that at least a part of the printed part of the nonwoven fabric 2 is visible (or the transmittance is such that at least a part of the printed part of the nonwoven fabric 2 is visible in a translucent state), and at least When the laminated paper 10 is wet due to water content, the entire printed area of the non-woven fabric 2 can be seen clearly through the crepe paper 1 (or the entire printed area of the non-woven fabric 2 can be seen in an almost transparent state) The thickness is set so that the transmittance is as follows. On the other hand, the other crepe paper 1 bonded to the other surface of the nonwoven fabric 2 is usually set to have the same thickness as the one crepe paper 1, but it can also be set to a different thickness. Even when the other crepe paper 1 has the same thickness as the one crepe paper 1, if the thickness of the nonwoven fabric 2 is within the above-mentioned predetermined range, the nonwoven fabric will pass through the other crepe paper 1 in the dry state of the laminated paper 10. At least a part of the printed portion of the paper 2 becomes visible (albeit with lower clarity than the side of the crepe paper 1 on one side), and in a wet state due to the moisture content of the laminated paper 10, it is visible through the other crepe paper 1. The entire printed area of the nonwoven fabric 2 can be visually recognized in a somewhat clear state (although the visibility is lower than that on one side of the crepe paper 1). In any case, in the laminated paper 10, the crepe paper 1 has an arbitrary value within a predetermined range to achieve a predetermined light transmittance (synonymous with light transmittance, hereinafter simply referred to as "transmittance"). This allows the nonwoven fabric to pass through the crepe paper 1 when the laminated paper 10 is dry, whether it is visually observed from one crepe paper 1 side or from the other crepe paper side. At least a part of the printed portion of the non-woven fabric 2 becomes visible, and in a wet state due to water content of the laminated paper 10, the entire printed portion of the non-woven fabric 2 is visually recognized through the crepe paper 1 in a clear state, although there are differences in degree. It has the unique effect of

Specifically, in the laminated paper 10, the thickness of the crepe paper 1 is set to an arbitrary value in the range of 20 to 50 g/m ² in terms of basis weight, and more preferably in the range of 20 to 40 g/m ² . It is preferably set to any value within the range of 30 to 40 g/m ² , even more preferably set to any value within the range of 30 to 35 g/m ² . , even more preferably set to any value within the range 30-33 g/m ² or any value within the range 33-35 g/m ² , most preferably set to a value of about 33 g/m ² or about The value is set at 35g/ ^m2 . For example, the thickness of the crepe paper 1 can be set to a value of 35 g/m ² , 27 g/m ² , or 23 g/m ² in basis weight. As a result of extensive research into the relationship between the crepe wrinkles of the crepe paper 1 and the thickness of the crepe paper 1, the inventor of the present invention found that when the thickness of the crepe paper 1 is outside the above range, the crepe paper 1 of the laminated paper 10 has a It was discovered that the desired physical properties cannot be secured. That is, if the thickness of the crepe paper 1 is 20 g/m ² or less in terms of basis weight, when producing the crepe paper 1 using a crepe paper production apparatus, the raw material sheet of the crepe paper 1 (not forming a crepe) It was found that when increasing the feeding speed of the paper sheet), it was not possible to form crepes in the raw material sheet. On the other hand, if the thickness of the crepe paper 1 exceeds 50 g/m ² in terms of basis weight, the crepe paper 1 is laminated on the nonwoven fabric 2 in order to form the laminated paper 10 and the nonwoven fabric 2 is heated at the heat sealing part 11. When attempting to fuse, the heat from the pressure bonding surface of the heat seal roller is blocked by the thick crepe paper 1 and does not reach the nonwoven fabric 2 sufficiently, causing the thermoplastic resin as an adhesive for the nonwoven fabric 2 to deteriorate. There is a possibility that the crepe paper 1 cannot be bonded to the nonwoven fabric 2 because it is not sufficiently melted and the desired adhesive force to the crepe paper 1 cannot be developed.

Furthermore, if the thickness of the crepe paper 1 exceeds 40 g/m ² in terms of basis weight, it will be necessary to reduce the feed speed of the raw material sheet to an extremely low speed in order to produce the crepe paper during production using the crepe paper production equipment. Therefore, from this point of view, it is preferable that the upper limit of the thickness of the crepe paper 1 is 40 g/m ² . Furthermore, if the thickness of the crepe paper 1 exceeds 35 g/ ^m2 in terms of basis weight, even if the feeding speed of the raw material sheet is set to a low speed during production using the crepe paper production equipment, the crepe paper may not be produced depending on the performance of the crepe paper production equipment. From this point of view, it is preferable to set the upper limit of the thickness of the crepe paper 1 to 35 g/m ² because the production of the paper itself may become difficult.

[Total thickness of laminated paper (total thickness of crepe paper and non-woven fabric)]
As described above, the crepe paper 1 and the nonwoven fabric 2, which are the constituent elements of the laminated paper 10, are each configured to have a thickness of an arbitrary value within a predetermined range, and the overall thickness of the laminated paper 10 is Preferably, the overall thickness of the laminated paper 10 is determined by the thickness of each crepe paper 1 in terms of basis weight of 35 g/m ² and the thickness of the nonwoven fabric 2 in terms of basis weight. By setting the thickness to 20 g/m ² , it is most preferable to set the total thickness to (35+20+35=)90 g/m ² . The thickness of the crepe paper 1 is set to this value (35 g/m ² ), the thickness of the nonwoven fabric 2 is set to this value (20 g/m ² ), and the overall thickness of the laminated paper 10 is set to this value (90 g/m ² ). Then, when manufacturing the laminated paper 10, the raw material sheet of the laminated paper 10 (i.e., the raw material sheet formed by interposing one nonwoven fabric raw material sheet between a pair of crepe paper raw material sheets) is cut at a predetermined feeding position. (i.e., cutting the raw material sheet of the laminated paper 10 into a predetermined length depending on the purpose of use), cutting can be performed best, improving manufacturing efficiency and yield. .

[Effects of laminated paper with printing section]
In this way, the laminated paper 10 provided with the printed portion has a unique design effect because the printed portions such as the pattern portion 13 and the advertising portion 14 have an appearance and look as if half of them are embossed through the crepe paper 1. can do. Specifically, when the laminated paper 10 is in a dry state, the transmittance (transparency) of the dried crepe paper 1 is relatively low, so the pattern or advertisement on the printed part is blurred through the crepe paper 1. However, it is still visible to some extent, but when the laminated paper 10 is in a wet state due to water content, the transmittance (transparency) of the wet crepe paper 1 becomes relatively high, so the pattern of the printed part is visible. The advertisements and advertisements are clearly visible through the crepe paper 1, and due to the presence of the crepe paper 1, a unique effect is exhibited in that they appear to stand out from the laminated paper 10.

[Effects of printing section when installed on non-woven fabric]
Further, as described above, since the laminated paper 10 is configured as described above, it can be provided with a printing section in which a pattern section 13 and an advertisement section 14 that are not available in the past are printed. Therefore, compared to, for example, conventional colored paper towels (paper towels whose entire surface is colored in a single color) in which the raw material fibers (pulp, etc.) of the towel raw material sheet are simply colored, the laminated paper 10 is The pattern part 13 and the advertising part 14 make the product extremely rich in design. In addition, since the laminated paper 10 is formed by sandwiching the nonwoven fabric 2 provided with the printed portion between a pair of crepe papers 1, the patterns and advertisements on the printed portion give the viewer a soft impression when viewed from the outside. It gives a unique visual effect. In particular, when the laminated paper 10 is applied to sanitary paper products such as paper towels, which is the main use, the laminated paper 10 as the sanitary paper product is usually provided to the user after being moistened with water, The laminated paper 10 in this state allows the user to wipe off dirt and the like from a part of the user's hands or body. In this case, it is necessary to prevent the printing ink in the printing part of the laminated paper 10 from being dissolved by moisture, eluting out of the crepe paper 1, and adhering to the user's hands or body. However, in conventional color paper towels, the entire paper towel is colored with a predetermined monochromatic printing ink, so that the printing ink is exposed on the surface of the color paper towel. Therefore, in order to prevent the printing ink exposed on the surface of conventional color paper towels from dissolving and touching the user's hands or skin when wet due to water content, the printing ink must be an organic solvent-based printing ink. As mentioned above, the influence of volatile components of organic solvents cannot be denied.

On the other hand, in the laminated paper 10 of this embodiment, as described above, the printed portion is formed on the nonwoven fabric 2 using water-based ink or UV ink using flexo printing, and both sides of the nonwoven fabric 2 are coated with crepe paper 1. Since it is completely covered, the printing ink of the printing section is not directly exposed on the surface of the laminated paper 10 and always remains shielded by the crepe paper 1. Therefore, even though the laminated paper 10 is provided with a printing section, the printing ink does not come into direct contact with the user's hands or skin even when used in a wet state when it contains water, and the user It can be provided as a laminated paper 10 that is safe and harmless to the environment, and can also be provided as an environmentally friendly laminated paper, and for this purpose, it is not necessary to use organic solvent type printing ink like conventional color paper towels. It has the advantage of not having Note that the water-based ink used as the printing ink for the printed portion of the laminated paper 10 is preferably a pigment-type water-based ink, and in this way, in the wet state when the laminated paper 10 contains water, the printing portion of the nonwoven fabric 2 cannot be printed. The ink can be effectively prevented from being easily dissolved and eluted to the outside.

[Method for manufacturing laminated paper having a printing section (width dimension of nonwoven fabric raw material sheet)]
Next, a method for manufacturing the laminated paper 10 having a printing section will be described. In general, nonwoven fabrics are produced by producing a web (also called fleece) from predetermined raw material fibers made of natural fibers (pulp) or synthetic fibers by a predetermined web forming method such as a dry method, a wet method, or a spunbond method. The web is manufactured by bonding the fibers of the web using a predetermined bonding method such as a chemical bonding method, a thermal bonding method, a needle punching method, or a hydrodrafting method. On the other hand, in the laminated paper 10 of the present embodiment, it is preferable to use a nonwoven fabric made of the core-sheath composite fiber as the nonwoven fabric 2. Furthermore, as the nonwoven fabric 2, the air-through method, which is a type of the thermal bonding method, is used. It is more preferable to use a nonwoven fabric produced by bonding fibers together (hereinafter referred to as "air-through nonwoven fabric" for convenience of explanation). This air-through type nonwoven fabric has advantages such as being rich in elongation and flexibility, giving the user a soft touch and feeling good on the skin. Even in the above cases, it is possible to develop good adhesive strength. Further, details will be explained in the section of the laminated paper manufacturing apparatus and laminated paper manufacturing method described later, but in manufacturing the laminated paper 10, a pair of raw material sheets of the crepe paper 1 (hereinafter referred to as "crepe paper raw material sheets") A raw material sheet for the nonwoven fabric 2 (hereinafter referred to as the "nonwoven fabric raw material sheet") is sandwiched between the three layers (hereinafter referred to as the "laminated raw material sheet"). Then, the laminated raw material sheet is fed between, for example, a pair of heat-sealing rollers, and the pair of crepe paper raw material sheets are heat-sealed and integrated with the non-woven fabric raw material sheet by the pair of heat-sealing rollers. Manufactures laminated paper. At this time, the crepe paper raw material sheet and the nonwoven fabric raw material sheet usually have a width direction dimension that is the same predetermined width (for example, a width direction dimension of 1200 mm). In particular, if the widthwise dimension of the nonwoven fabric raw material sheet is smaller than the widthwise dimension of the crepe paper raw material sheet, there will be areas at the widthwise ends of the laminated raw material sheet where the crepe paper raw material sheet cannot be thermally fused to the nonwoven fabric raw material sheet. Therefore, it is not preferable that the widthwise dimension of the nonwoven fabric raw material sheet is smaller than the widthwise dimension of the crepe paper raw material sheet.

[Setting the width direction dimension of the nonwoven fabric raw material sheet according to the material of the nonwoven fabric]
On the other hand, when providing a printing section on the nonwoven fabric 2 as described above, the nonwoven fabric raw material sheet is fed in advance to a predetermined printing device and the predetermined printing section is printed on the raw material sheet. At this time, when the air-through type nonwoven fabric was used as the nonwoven fabric, this is thought to be due to its high elasticity, but since it was found that the nonwoven fabric raw material sheet shrinks due to the heat during printing, this effect was taken into consideration. As a result of intensive research into the invention of laminated paper, we came up with the following structure. That is, when forming a printed part on the laminated paper 10, for example, when forming a printed part using flexo printing, if the printed part is printed on a nonwoven fabric raw material sheet 2 with a width of 1200 mm, after printing, the nonwoven fabric raw material sheet is The width of the nonwoven fabric sheet shrinks from 1200 mm to 1150 mm (i.e., about 96% of the original width), or under other conditions, the width of the nonwoven fabric sheet shrinks from 1300 mm to 1200 mm (i.e., about 96% of the original width). The inventors have found that the width of the fibers shrinks to approximately 92% of the width. Taking into consideration the shrinkage of the nonwoven fabric raw material sheet during printing, the inventor also attempted printing with the nonwoven fabric raw material sheet stretched in the width direction (by the amount of shrinkage), but in this case, the nonwoven fabric raw material sheet It was learned that it would be difficult to perform the desired printing. Therefore, in the manufacturing method of the laminated paper 10 having a printing section, in order to compensate for the shrinkage during printing on the nonwoven fabric raw material sheet, the width of the laminated paper 10 to be actually obtained is determined according to the shrinkage rate. (In other words, the width of the nonwoven fabric sheet is set to a width that compensates for the shrinkage size according to the shrinkage rate.)

Through experiments, the present inventor has found that, for example, when a nonwoven fabric raw material sheet with a width of 1200 mm is used and the printing section is printed on this nonwoven fabric raw material sheet, this nonwoven fabric raw material sheet shrinks after printing and its width becomes 1150 mm. It has been confirmed that the width is 50 mm smaller than the width before printing, or about 4% smaller than the width before printing. Therefore, in the production of the laminated paper of this embodiment, a nonwoven fabric as a base paper having a size approximately 4% (approximately 4.12%) larger than the required size after shrinkage is used. For example, when the width of the laminated paper raw material sheet is 1200 mm, the width of the crepe paper raw material sheet is the same 1200 mm, but the width of the nonwoven fabric raw material sheet is about 4% larger than 1200 mm (for example, 1250 mm). Width).

[Special effects due to width dimension setting of nonwoven fabric raw material sheet]
According to the method for manufacturing laminated paper using a nonwoven fabric raw material sheet whose width direction dimension is set as described above (that is, the width direction dimension is set to compensate for the shrinkage rate of the nonwoven fabric raw material sheet during printing), a nonwoven fabric The width of the raw material sheet becomes the same width as the predetermined width of the laminated paper raw material sheet (that is, the predetermined width of the crepe paper raw material sheet) after the printing process of the printing section. For example, when the predetermined width of the laminated paper raw material sheet (i.e., the predetermined width of the crepe paper raw material sheet) is 1200 mm, the width of the nonwoven fabric raw material sheet is also the same width of about 1200 mm (i.e., 50 mm smaller than the width before printing). (or a width approximately 4% smaller than the width before printing). Therefore, a laminated paper raw material sheet with a three-layer structure is constructed by laminating this printed nonwoven fabric raw material sheet (width approximately 1200 mm) between a pair of crepe paper raw material sheets (width 1200 mm). The paper raw material sheet and the nonwoven fabric raw material sheet as an intermediate layer all have the same width, and can be smoothly provided to the laminated paper manufacturing process as a laminated paper raw material sheet with a width of 1200 mm, and the laminated paper 10 after manufacturing also has the same width. , has a desired width of 1200 mm.

Embodiment 2 (laminated paper with printing section provided on crepe paper)
[Overall structure of laminated paper and structure of crepe paper]
As shown in FIG. 5, in the example of Embodiment 1, the laminated paper 10 has a three-layer structure (a three-sheet stacked structure) consisting of a pair of crepe paper 1 and one sheet of nonwoven fabric 2, In addition, the printing layer 2a of the printing part is provided on the surface of the nonwoven fabric 2 as an intermediate layer sheet, but as shown in FIG. A printing layer 1a of a printing section is provided on the inner surface of a crepe paper 1 as a sheet. That is, in the second embodiment, the laminated paper 10 includes a pair of crepe papers 1 as outer layer sheets and one or more nonwoven fabrics as an intermediate layer sheet arranged in a laminated state between the pair of crepe papers 1. It has a multi-layer structure (multi-layer structure of three or more layers) consisting of 2 and 2, and as its inner surface (that is, as the inner surface of the laminated paper 10), and on the inner surface of one crepe paper 1 as an outer layer sheet. The printing part is provided, and the crepe paper 1 is bonded to the nonwoven fabric 2 by heat sealing and pressure bonding by the heat sealing part 1. Note that the inner surface of the crepe paper 1 refers to the laminated paper 10 with a laminated structure in which one (or two or more) nonwoven fabrics 2 as an intermediate layer sheet are sandwiched and stacked between a pair of crepe papers 1 as outer layer sheets. It refers to the surface that comes inside the laminated structure of the laminated paper 10 (i.e., the side facing the nonwoven fabric 2) when the laminated paper 10 is constructed. Here, on both sides of the crepe paper 1, one side has a high smoothness (i.e., a relatively smooth surface with a good feel to the touch), and the other side has a low smoothness (i.e., a relatively smooth surface that feels good to the touch). However, in the laminated paper 10 of the second embodiment, the above-mentioned laminated structure is configured with the front side of the crepe paper 1 as the inner side. is preferred.

[Special effects of printing on the inner surface (surface) of crepe paper]
According to the laminated paper 10 of the second embodiment, the nonwoven fabric 2 is interposed between the pair of crepe papers 1, and the crepe paper 1 is heat-sealed to the nonwoven fabric 2 by the heat-sealing section 1. The present inventor has confirmed through experiments that the crepe paper 1 is more reliably and firmly adhered to the nonwoven fabric 2 when the crepe paper 1 is fixed to the nonwoven fabric 2. In addition, when the printing layer 1a of the printing section is provided on the inner surface of the crepe paper 1 as in the second embodiment, the inner surface of the crepe paper 1 on which the printing layer 1a is provided (that is, printed with printing ink) is Since the surface has high smoothness, the desired pattern portion 13 and advertisement portion 14 can be printed in a better condition, and the printing quality can be further improved. In addition, in the second embodiment, since the printing part is provided on the inner surface of the crepe paper 1, the printing part does not come into contact with the user's fingers or skin (skin). This eliminates the user's anxiety and reliably prevents health problems caused by printing ink. In addition, when providing the printing part on the laminated paper 10, as in the first embodiment, rather than providing the printing part on the crepe paper 1 which is the outer layer of the laminated paper 10 as in the second embodiment, In terms of printing quality, it is preferable to provide the printing portion on the nonwoven fabric 2 that becomes the layer (that is, the inner layer).

[Thickness of crepe paper, nonwoven fabric, and laminated paper]
In the case of the laminated paper 10 of the second embodiment, the thickness of the crepe paper 1, the thickness of the nonwoven fabric 2, and the overall thickness of the laminated paper 10 can be set in the same manner as in the first embodiment.

Embodiment 3 (Laminated paper with colored portion provided on intermediate layer sheet)
[Overall structure of laminated paper and structure of non-transparent sheet as intermediate layer sheet]
As shown in FIG. 5, in the example of Embodiment 1, the laminated paper 10 has a three-layer structure, and a printed portion is provided on the surface of the nonwoven fabric 2 as an intermediate layer sheet. As shown in Embodiment 2, the laminated paper 10 has a three-layer structure, and a printing section is provided on the inner surface of crepe paper 1 as an outer layer sheet, but in Embodiment 3, As shown in FIG. 7, the three-layer laminated paper 10 of Embodiment 3 has an intermediate layer sheet composed of an impermeable sheet 5 (for example, an impermeable sheet or a water-resistant sheet) made of a synthetic resin film. A printed layer 5a of a printed portion is provided on the surface of this non-transparent sheet 5. That is, in Embodiment 3, the laminated paper 10 includes a pair of crepe papers 1 as outer layer sheets, and a non-transparent intermediate layer sheet disposed in a laminated state between the pair of crepe papers 1. The printed part is provided on the surface of the non-transparent sheet 5 as an internal surface (that is, as an internal surface of the laminated paper 10). , the crepe paper 1 is bonded to the non-permeable sheet 5 by heat fusion and pressure bonding by the heat fusion section 1. The non-permeable sheet 5 may be, for example, what is generally called a vinyl sheet or vinyl film, a resin film or resin sheet made of polyvinyl chloride resin, or a resin sheet made of polyolefin resin (such as polyethylene resin or polypropylene resin). A resin film, a resin sheet, etc. can be suitably used. Further, the thickness of the non-permeable sheet 5 is preferably set to a predetermined thickness within the range of, for example, 0.1 mm to 0.2 mm. Note that the main function of the non-water permeable sheet as the non-permeable sheet 5 is to block the permeation of moisture, but the non-permeable sheet is a non-permeable sheet (hereinafter referred to as "non-permeable sheet") that blocks the permeation of oil. (referred to as "oil-impermeable sheet"). Furthermore, in the documents of this application, the term "non-permeable sheet" includes not only the above-mentioned water-impermeable sheet but also the above-mentioned oil-impermeable sheet, which also blocks the permeation of other liquids and some gases. Including things. That is, in the present invention, the non-permeable sheet may be a sheet or film made of a synthetic resin that blocks the permeation of moisture and/or oil as the intermediate layer sheet.

[Special effects of non-transparent sheet]
According to the laminated paper 10 of the third embodiment, the impermeable sheet 5 including a water-impermeable sheet and an oil-impermeable sheet as an intermediate layer sheet blocks the permeation of moisture and oil, so the laminated paper 10 is In addition to typical products such as paper towels, it can be applied to wrapping paper for temporarily or long-term packaging of objects and articles with moisture or oil attached, and has a wide range of uses as laminated paper 10. Can be expanded.

[Scope of invention of laminated paper of Embodiments 1 to 3]
By the way, the invention of the laminated paper 10 of the first to third embodiments described above has a main feature in that a printing section is provided on the inner surface side of the laminated paper 10 (the inner surface of the intermediate layer sheet or the outer layer sheet). That is, the invention of the laminated paper 10 of Embodiments 1 to 3 is such that, as long as such a printing section is provided, the structure other than the printing section (the structure of the heat sealing section, etc.) is different from that of the above embodiments. It can be done. That is, the laminated paper 10 has a multi-layer structure consisting of an outer layer sheet and an intermediate layer sheet, and as long as the printing section is provided on the inner surface side, the structure of the heat-sealing section and the structure of other elements or parts can be changed. Any configuration is possible. For example, in the laminated paper provided with the printing portion of the present invention, the heat-sealing portion row may be formed into a broken line shape as in the first embodiment, but may also be formed into a wavy line shape with another configuration, a dotted line shape, or a single point. It can be a chain line made of a chain line such as a chain line or a two-dot chain line, or it can be a line shape such as a zigzag shape or a staggered shape, or it can be a straight line shape made of a solid line. Alternatively, it can also be embodied in a laminated paper in which dot-shaped heat-sealed parts are scattered. However, in order to obtain a sufficient expansion effect over the entire laminated paper after the laminated paper absorbs water to create a voluminous feel during use, the heat-sealed part rows should be formed in a broken line (or a chain line) as in the above embodiment. It is preferable to have a straight line shape.

[Invention of laminated paper without a printing section]
On the other hand, among the configurations of the laminated paper 10 described in the first embodiment, the following configurations alone have novelty and inventiveness when viewed from the prior art. That is, in addition to the invention of a laminated paper provided with a printing part as described above (hereinafter referred to as the "first invention of laminated paper"), the thickness of the nonwoven fabric is within the predetermined range, and the thickness of the crepe paper is Invention of a laminated paper in which the thickness is within the predetermined range (hereinafter referred to as "second invention of laminated paper"), and the spacing of the heat-sealed parts in the width direction is adjusted according to the crepe rate of the crepe paper. The invention of laminated paper (hereinafter referred to as the "third invention of laminated paper"), which falls within the prescribed range, is novel and novel in terms of the prior art, even if the invention itself (that is, even if it does not include a printing section). It has an inventive step.

[Second invention of laminated paper (thickness range of crepe paper and thickness range of nonwoven fabric)]
Specifically, the second laminated paper invention comprises crepe paper as a pair of outer layer sheets, and a heat-fusible intermediate layer sheet disposed in a laminated state between the crepe papers, The crepe paper is heat-sealed to the intermediate layer sheet to form a laminated structure by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend; The nonwoven fabric is characterized in that it has a thickness in the range of 20 to 50 g/m ² , and the nonwoven fabric has a thickness in the range of 15 to 25 g/m ² in terms of basis weight.

[Third invention of laminated paper (crepe ratio of crepe paper and interval of heat-sealed parts in width direction)]
Further, the third laminated paper invention comprises crepe paper as a pair of outer layer sheets and a heat-fusible intermediate layer sheet disposed in a laminated state between the crepe paper, and the crepe paper The crepe paper is heat-sealed to the intermediate layer sheet to form a laminated structure by a linear heat-sealing section row extending in a direction perpendicular to the direction in which the crepe wrinkles extend; The interval between the width direction center lines of the heat-sealed parts is set to an arbitrary value within a predetermined range depending on the crepe rate range of the crepe paper, and When the crepe rate of the crepe paper is within the range of 20% to 26%, the interval between the heat-sealed parts in the width direction is set within the range of 10mm to 15mm, and when the crepe rate of the crepe paper is within the range of 26% to 30%, The spacing between the heat-sealed parts in the width direction is set within a range of 15 to 25 mm.

Embodiment 4 (Laminated paper with improved nonwoven fabric in intermediate layer sheet)
[Composition of nonwoven fabric]
The laminated paper of the present invention can also be embodied as follows, as having features in the structure of the nonwoven fabric as the intermediate layer sheet. Specifically, in the laminated paper of Embodiment 4, the nonwoven fabric is made of a nonwoven fabric with a high elasticity, and specifically, as described later, is made of a nonwoven fabric manufactured using so-called core-sheath structural fibers. That is, conventional nonwoven fabrics are made of so-called pulp nonwoven fabrics, which are manufactured by accumulating fibrous materials obtained by crushing wood pulp into a web shape and joining them together to form a sheet-like part. Furthermore, conventional paper towels are generally manufactured from nonwoven fabric, and the nonwoven fabric used is a sheet-like nonwoven fabric with a basis weight of 45 to 70 g/cm2.

[Types of nonwoven fabric of the present invention (types according to manufacturing method)]
On the other hand, for example, to explain using the cross-sectional view of FIG. 5, the laminated paper 10 of Embodiment 4 uses an air-through type nonwoven fabric containing air (manufactured by thermal bonding) as the intermediate layer sheet. can do. In this way, the laminated paper 10 has a structure that is thick as a whole and highly elastic, has a good feel to the touch, and has thermal adhesive properties. Furthermore, the nonwoven fabric of the laminated paper of Embodiment 4 is made of a nonwoven fabric manufactured using a so-called core-sheath composite fiber as a raw material. This core-sheath composite fiber is a short-fiber synthetic fiber (PE/PP, PE/PET composite fiber) that is used as a raw material for nonwoven fabric webs (laminated layers of fibers, sometimes called fleece), which are manufactured using a dry process. In addition to forming fibers, the air-through method of the thermal bonding method is used to bond the fibers together (i.e., by passing hot air from the front surface to the back surface in the thickness direction of the web, the sheath portion of the composite fiber is The fibers are bonded by melting the resin and bonding the fibers together. Moreover, this core-sheath structure fiber is a fiber in which the outer sheath is made of PE (polyethylene) and the inner (center) core is made of PET (polyethylene terephthalate). This nonwoven fabric has a soft texture because no adhesive is used to bond the fibers, but it does not have water absorbency. When the laminated paper 10 becomes hydrated, the nonwoven fabric 2 absorbs water and does not supply moisture to the printing ink of the printing layer 2a on the surface. Therefore, this laminated paper 10 exhibits the additional unique effect of being able to maintain good print quality of the printed portion of the nonwoven fabric 2. In addition, in this nonwoven fabric, the PE in the sheath part softens at low temperatures and allows the crepe paper 1 to be well bonded by the heat-sealing part 11 of the laminated paper 10, while the PET in the core part softens at low temperatures. Maintain strength to maintain the overall strength of the nonwoven fabric. That is, in this nonwoven fabric, the sheath portion of the core-sheath structure exhibits adhesive strength and functions as an adhesive for the crepe paper, while the core portion contributes to maintaining strength.

The materials for the core-sheath structural fibers of this nonwoven fabric include polyethylene (PE) with a melting point of around 120°C (i.e., low-density PE with a melting point of 95 to 130°C or 114 to 126°C, and melting point of 120 to 140°C). Alternatively, PE with a high density of 126 to 137° C.) can be used. Usually, PE with a low density is used, but it is sufficient to use PE with a density such that the melting point is around 120° C. On the other hand, polypropylene (PP) having a melting point around 140° C. (ie, PP having a low melting point) can be used. There are three types of PP: copolymerized random PP, copolymerized block PP, and homopolymerized homoPP. HomoPP has a melting point of 160 to 165°C, and block PP has a synthetic melting point. Since the temperature is 140 to 150°C (or 160 to 165°C), in the case of block PP, one with a low melting point is used. Furthermore, the random PP having the lowest melting point can be one having a melting point of approximately 135 to 145°C or one having a melting point of approximately 135 to 150°C. In this embodiment, random PP can be used as the PP for the raw material fibers of the nonwoven fabric, and in this case, the random PP has a low melting point of 125°C.

[Types of nonwoven fabrics (types based on melting point)]
In the laminated paper of the present invention, when any nonwoven fabric is used as the intermediate layer sheet, some nonwoven fabrics do not adhere well to crepe paper due to their melting points. Therefore, when the nonwoven fabric 2 of the laminated paper 10 is heated at a predetermined heating temperature during heat fusing by the heat fusing section array 11 in the laminated paper manufacturing apparatus, the crepe paper 1 is melted into the heat fusing component of the nonwoven fabric 2 (for example, the core A nonwoven fabric is used that has a melting point such that it can be reliably bonded to the nonwoven fabric 2 by the sheath portion of the sheath structure fiber (PE, etc.). In particular, the laminated paper of the present invention, including the laminated paper 10 of Embodiments 1 to 3, has a structure in which a pair of crepe paper is bonded to a nonwoven fabric using only the adhesive force of the linear heat-sealing part array, so that the The type of nonwoven fabric is selected so that sufficient bonding force can be obtained between the crepe paper and the nonwoven fabric, which have a sufficient adhesive area. As such a nonwoven fabric, it is possible to use a nonwoven fabric that is a core-sheath type composite fiber as a polyester composite fiber and is manufactured using heat-fusible fiber for nonwoven fabric. For example, as the nonwoven fabric in this case, a nonwoven fabric manufactured from a core-sheath composite fiber with a fineness of 2.2 dtex, a cut length of 5 mm or 10 mm, and a sheath component softening point of about 110°C, or a nonwoven fabric with a fineness of 1.7 dtex and a cut length of 5 mm may be used. , using a nonwoven fabric made from a core-sheath type conjugate fiber with a sheath component softening point of about 110°C, or a nonwoven fabric made from a core-sheath type conjugate fiber with a fineness of 2.2 dtex, a cut length of 5 mm, and a sheath component softening point of about 130°C. You can use it. Alternatively, a nonwoven fabric may be used as the raw material fiber by appropriately mixing two or more types of the above-mentioned core-sheath type composite fibers.

Embodiment 5 (laminated paper manufacturing device)
The laminated paper of the present invention, including the invention of the laminated paper 10 of Embodiments 1 to 3 above, is preferably manufactured using a laminated paper manufacturing apparatus described below.

[Configuration of manufacturing equipment]
As shown in FIG. 9, in the laminated paper manufacturing apparatus according to the fifth embodiment, three supporting rollers 51, 52, and 53 arranged in parallel are each provided with a raw material sheet of crepe paper (one of the pair of crepe papers). A rolled crepe paper 21 that becomes a raw material sheet for crepe paper, a rolled nonwoven fabric 22 that becomes a raw material sheet for the nonwoven fabric (a raw material sheet for crepe paper), and a raw material sheet for the other crepe paper of the pair of crepe papers (raw material sheet for crepe paper). ) and the other rolled crepe paper 23, respectively, are supported so as to be freely rotatable and supplyable. Further, one of the rolled crepe paper 21, the rolled nonwoven fabric 22, and the other rolled crepe paper 1, the nonwoven fabric 2, and the other crepe paper 1 pulled out from the other rolled crepe paper 23 are in a laminated state, respectively. A raw material sheet (laminated paper raw material sheet) for the laminated paper 10 is constructed (that is, in a three-layer laminated state). This laminated paper raw material sheet is folded back by a first guide roller 61, and is guided and sealed between a first heat seal roller 70 as one pressure roller and a second heat seal roller 80 as the other pressure roller. be introduced. Note that the laminated paper raw material sheet is folded back from the first guide roller 61 to the second heat seal roller 80, guided by the second guide roller 62, and then passed between the first heat seal roller 70 and the second heat seal roller 80. is inserted between the heat seal roller 80 and the heat seal roller 80. Before being inserted between the first heat seal roller 70 and the second heat seal roller 80, the laminated paper raw material sheet is heated in a state where the crepe paper 1 and the nonwoven fabric 2 are not thermally fused. It is laminated paper 10X before fusion.

Next, the laminated crepe paper 1 and nonwoven fabric 2 are heat-sealed between the first and second heat-sealing rollers 70 and 80 to form the laminated paper 10 having the heat-sealed portion 11. The laminated paper raw material sheet at this stage after heat-sealing is a heat-sealed laminated paper 10Y in which crepe paper 1 and nonwoven fabric 2 are heat-sealed. Then, the elongated heat-sealed laminated paper 10Y (as a base paper before cutting) led out from the first and second heat seal rollers 70 and 80 is transferred to the third guide roller 63 and the fourth guide It is folded back by the roller 64 and guided to the take-up roller 55. The take-up roller 55 winds up the heat-sealed laminated paper 10Y to form a rolled laminated paper 10R. This rolled laminated paper 10R is removed from the take-up roller 55 and used as a base paper for paper towels and the like. Note that a slitter is arranged between the fourth guide roller 64 and the take-up roller 55, and cuts the heat-sealed laminated paper 10R into a plurality of pieces in the width direction, and arranges a plurality of laminated papers 10 of a predetermined width in parallel. The film is then wound onto a take-up roller.

[Heat seal roller]
Next, the first and second heat seal rollers 70 and 80 will be explained in detail with reference to FIGS. 10 to 13. FIG. 10 shows the first and second heat seal rollers 70 and 80 of FIG. 9 viewed from the top side, and the axes of the first and second heat seal rollers 70 and 80 are parallel to each other. Thus, they are arranged in parallel and facing each other in the front and back of the supply direction of the pre-heat-sealed laminated paper 10X. Further, the first and second heat seal rollers 70 and 80 have the same predetermined roller length L (for example, an axial length of an arbitrary value within the range of 1200 mm to 1500 mm) and the same predetermined roller diameter. D (for example, a diameter of any value within the range of 180 mm to 300 mm).

[First heat seal roller]
As shown in FIGS. 9 and 10, the first heat seal roller 70 is formed in a cylindrical shape with the predetermined roller diameter D, and has a non-pressure bonding portion 71 on its circumferential surface in the form of a ring groove with a constant width. and thermocompression bonding convex portions 72 in the shape of a broken line convex ring (or broken line convex stripe) having a constant width are arranged parallel to each other so that every other convex portion is arranged in the axial direction. As shown in FIG. 11, each of the non-crimping portions 71 extends intermittently in the circumferential direction as an arc-shaped surface along the circumferential surface of the first heat seal roller 70, and is a flat surface in the width direction. It has a surface 72a. In detail, each of the thermocompression bonding convex portions 72 extends linearly by a predetermined length in the circumferential direction along the circumferential surface of the first heat sealing roller 70 (as the circumferential surface of the thermocompression bonding convexity 72). The pressure bonding surfaces 72a are continuously arranged at regular intervals in the circumferential direction of the first heat seal roller 70. The thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 is an arc-shaped surface (curved surface) in the length direction, and the arc length is the same as that of the first heat-sealing portion 11a or the first heat-sealing portion 11a of the heat-sealing portion row 11. The length is set to be the same as the length of the heat-sealed portion 11b of No. 2. Further, the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 has a flat surface shape in the width direction, but its width is different from that of the first heat welding portion 11a or the second heat welding portion 11a of the heat welding portion array 11. The width is set to be the same as the width of the fused portion 11b. Furthermore, the interval between the adjacent thermocompression bonding surfaces 72a of the thermocompression bonding convex portions 72 in each row is the same as that of the adjacent first heat bonding portions 11a or the second heat bonding portions of the heat bonding portion row 11. The dimension is set to be the same as the interval between the portions 11b.

In this manner, the first heat sealing roller 70 forms the thermocompression bonding convex portions 72 in the shape of a broken line convex ring around the entire circumference in the circumferential direction, thereby sealing one row of heat sealing portions 11 of the laminated paper 10. It is configured to form. Further, the first heat sealing roller 70 arranges the multiple rows of thermocompression bonding convex portions 72 with respect to each other at regular intervals that are the same as the arrangement spacing in the width direction of the multiple rows of heat sealing portion rows 11 of the laminated paper 10. They are continuously arranged side by side throughout the axial direction so that they are parallel to each other. As a result, the first heat sealing roller 70 has a non-pressure bonding portion 71 having a ring groove shape between adjacent thermocompression bonding convex portions 72 . Further, the first heat seal roller 70 has multiple rows of non-crimped parts 71 arranged in parallel to each other at the same regular intervals as the non-fused parts 12 of the laminated paper 10 over the entire axial direction. They are arranged consecutively and side by side. Further, in the first heat sealing roller 70, the thermocompression bonding surfaces 72a of the thermocompression bonding convex portions 72 in adjacent rows are such that the longitudinal center position of the thermocompression bonding surface 72a of one of the thermocompression bonding convex portions 72 is different from that of the other thermocompression bonding convex portions 72. The positions of the first heat-sealing rollers 70 in the circumferential direction are shifted from each other so that the first heat-sealing rollers 70 are located in the middle of the gap between the adjacent thermocompression-bonding surfaces 72a of the thermocompression-bonding convex portions 72. As a result, as shown in FIGS. 11, 12, and 13, the thermocompression bonding convex portions 72 are arranged in the thermocompression bonding convex portions of the first row corresponding to the heat sealing portion rows 11A of the first row of the laminated paper 10. 72A, and a second row of thermocompression bonding convex portions 72B corresponding to the second row of heat sealing portion rows 11B. The thermocompression bonding convex portions 72A of the first row are arranged so that the thermocompression bonding surface 72a is attached to the first heat sealing roller in correspondence with the first heat welding portion 11a of the heat welding portion row 11A of the first row. The thermocompression bonding convex portions 72B of the second row are arranged in the circumferential direction of the thermocompression bonding surface 72B, and the thermocompression bonding convex portions 72B of the second row have a thermocompression bonding surface 72a corresponding to the second heat welding portions 11b of the heat welding portion rows 11B of the second row. They are arranged in the circumferential direction of the first heat seal roller 70.

Further, as shown in FIG. 10, the thermocompression bonding surface 72a of the heat sealing convex portion 72 extends linearly in plan view (in the circumferential direction of the second heat sealing roller 70, it extends in a curved line along the circumferential surface). It is composed of a straight narrow band part 72x (extending to ) and semicircular curved parts 72y at both longitudinal ends of the straight narrow band part 72x. Thereby, the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 of the heat seal roller 70 allows the thermocompression bonding of the laminated paper 10 obtained by thermocompression bonding and thermal fusion of the crepe paper raw material sheet of the laminated paper raw material sheet to the nonwoven fabric raw material sheet. Each of the heat-sealing parts 11a, 11b of the bonding part row 11 is arranged in the longitudinal direction of the laminated paper 10, as shown in FIGS. 1 and 2 and FIG. It is composed of a linear narrow strip-shaped portion that extends linearly into a straight line, and semicircular portions at both longitudinal ends of the linear narrow strip-shaped portion. Furthermore, as shown in FIG. 13, on both sides in the width direction of the thermocompression bonding surface 72a of each thermocompression bonding convex portion 72, a pair of side surfaces 72b extend perpendicularly to the thermocompression bonding surface 72a.

[Second heat seal roller]
On the other hand, as shown in FIGS. 9 and 10, the second heat seal roller 80 is formed into a cylindrical shape with the predetermined roller diameter D, and has a non-pressure bonded ring groove-like shape with a constant width on its circumferential surface. The thermocompression bonding convex portions 81 and thermocompression bonding convex portions 82 in the form of convex rings (or convex stripes) having a constant width are arranged parallel to each other so as to be every other convex portion in the axial direction. As shown in FIG. 11, each of the non-crimping portions 81 is formed continuously as an arcuate surface in the circumferential direction along the circumferential surface of the second heat sealing roller 80 (i.e. It has a crimp surface 82a that extends over the entire circumference of the surface and is flat in the width direction (as the circumferential surface of the thermocompression convex portion 82). The thermocompression bonding surface 82a of the thermocompression bonding convex portion 82 is an arcuate surface (curved surface) in the length direction. Further, the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82 has a flat surface shape in the width direction, but the width thereof is the same as that of the first heat bonding portion 11a or the second heat bonding portion 11a of the heat bonding portion 11. The width is set to be larger than the width of the bonding portion 11b (that is, the width is larger than the width of the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 of the first heat sealing roller 70).

In this way, the second heat sealing roller 80 has a thermocompression bonding convex portion 82 in a convex ring shape at a position facing the thermocompression bonding convexity 72 of the first heat sealing roller 70 all around the circumferential direction. It is formed over a period of time. As a result, the thermocompression bonding convex portion 72 of the first heat seal roller 70 and the thermocompression bonding convex portion 82 of the second heat sealing roller 80 sandwich the laminated paper 10X before heat sealing, and The crepe paper 1 of the pre-heat-sealed laminated paper 10X is thermo-compressed and heat-sealed to the nonwoven fabric 2 between the thermo-compression bonding surface 72a of the thermo-compression bonding convex portion 82 and the thermo-compression bonding surface 82a of the thermo-compression bonding convex portion 82. A row of heat-sealed parts 11 of paper 10 is formed.

Further, as shown in FIG. 13, the width of the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82 of the second heat sealing roller 80 is the same as that of the thermocompression bonding surface 72a of the thermocompression bonding convexity 72 of the first heat sealing roller 70. The width is set to be a certain dimension larger than the width, and the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 and the thermocompression bonding surface 82a of the thermocompression bonding convexity 82 are set to face each other (thickness of the thermal bonding portion 11 of the laminated paper 10). When the thermocompression bonding convex portion 72 is placed in a substantially close contact state (with a gap of A certain width part is exposed. As a result, the crepe paper 1 of the pre-heat-sealed laminated paper 10X is thermo-compressed and heat-sealed to the non-woven fabric 2 between the thermo-compression bonding surface 72a of the thermo-compression bonding convex portion 72 and the thermo-compression bonding surface 82a of the thermo-compression bonding convex portion 82. At this time, both edges in the width direction of the thermocompression bonding surface 72 a of the thermocompression bonding convex portion 72 are arranged on the thermocompression bonding surface 82 a of the thermocompression bonding convex portion 82 , so that the thermocompression bonding surface of the thermocompression bonding convex portion 72 External forces (particularly shearing forces) applied to the pre-heat-sealed laminated paper 10X from both widthwise edges of the sheet 72a can be significantly reduced. That is, if the width of the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 and the width of the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82 are made the same width, the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 and the When the crepe paper 1 of the laminated paper 10X before heat fusion bonding is thermocompression bonded and heat fused to the nonwoven fabric 2 between the thermocompression bonding surface 82a of the crimping convex portion 82, the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 is Both edges in the width direction are arranged at the same position as both edges in the width direction of the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82, so that thermal melting is carried out from both widthwise edges of the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72. Since the external force (especially shearing force) applied to the pre-wear laminated paper 10X increases, there is a possibility that a part of the pre-heat-sealed laminated paper 10X (especially the crepe paper 1) may be cut or damaged. However, as shown in FIG. 13, the width of the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82 of the second heat sealing roller 80 is set to By setting the width to be a certain dimension larger than the width, such problems can be reliably prevented. Note that on both sides in the width direction of the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82 of the second heat sealing roller 80, a pair of side surfaces 82b are inclined at a predetermined angle with the thermocompression bonding surface 82a (obtuse angle inclination). extending (at an angle). In this way, in the laminated paper manufacturing apparatus, the thermocompression bonding surfaces 72a, 82a of the thermocompression bonding convex portions 72, 82 are more susceptible to the heat of the lower heat seal roller 80 than the thermocompression bonding surface 72a of the upper heat seal roller 70. The crimp surface 80 is made wide, and the corners of both widthwise edges of the thermocompression convex portion 92 of the lower heat seal roller 80 are cut (notched) to form a tapered (chamfered) or rounded shape. It is preferable to have a cut shape such as (curved chamfered shape).

[Roller length and roller diameter]
The roller length L of the heat seal rollers 70, 80 is preferably in the range of 1200 mm to 1500 mm. If the roller diameter D of the heat seal rollers 70, 80 is set to a value less than 1200 mm, productivity may decrease. On the other hand, if the roller length L of the heat seal rollers 70, 80 is set to a value exceeding 1500 mm, the problem of the crown phenomenon described below may occur. Further, the roller diameter D of the heat seal rollers 70 and 80 is preferably in the range of 180 mm to 300 mm. If the roller diameter D of the heat-sealing rollers 70, 80 is set to a value less than 180 mm, there is a possibility that the pressure bonding force of the heat-sealing portion of the pre-heat-sealing laminated paper 10X by the heat-sealing convex portions 72, 82 is insufficient. On the other hand, if the roller diameter D of the heat seal rollers 70, 80 is set to a value exceeding 300 mm, the problem of high cost will occur.

[Relationship between the roller diameter and roller length of the heat seal roller and the pressing force during thermocompression bonding]
In the thermocompression bonding operation of the pre-heat sealing laminated paper 10X by the heat seal rollers 70, 80, the pre-heat seal lamination starts from the thermocompression convex portions 72, 82 by the roller diameter D and roller length L of the heat seal rollers 70, 80. The present inventor has obtained the knowledge that the pressing force applied to the heat-sealed portion of paper 10X changes. In addition, in the thermocompression bonding operation of the pre-heat sealing laminated paper 10X by the heat seal rollers 70, 80, the heat is applied from the thermocompression convex portions 72, 82 to the heat sealing portion of the pre-heat sealing laminated paper 10X. The pressing force (hereinafter referred to as the "pressing force during thermocompression bonding") must be maintained even when the roller length L of the heat seal rollers 70, 80 is made small in order to reliably form the heat-sealed parts 11, 11b. It has been found that the value needs to be at least 2 to 3 atmospheres or higher. Further, when the roller length L of the heat seal rollers 70 and 80 is 1400 mm, the pressing force during thermocompression bonding is preferably within the range of 5.5 to 7.0 atmospheres. That is, when the roller length L of the heat seal rollers 70, 80 is 1400 mm, the laminated paper 10X before heat sealing has sufficient durability up to a pressure of 5 atm to 7 atm during thermocompression bonding by the heat seal rollers 70, 80. Therefore, this range is optimal for the pressing force during thermocompression bonding. If the pressing force during thermocompression bonding is 7 atmospheres or more, the laminated paper 10X before heat fusion bonding may be damaged (for example, it may tear at a part corresponding to the corner of the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72). There is sex.

In addition, when the roller length L of the heat seal rollers 70, 80 is 1400 mm, if the pressing force during thermocompression bonding is 7 atm or more, the heat seal rollers 70, 80 will have a so-called crown phenomenon (the heat seal rollers 70, 80 have a diameter There is also a possibility that a phenomenon in which a gap is created between the heat seal rollers 70 and 80 due to bending in the direction of the heat seal rollers 70 and 80 occurs. When this crown phenomenon occurs, the heat seal rollers 70, 80 are curved in the radial direction, and a drum-shaped gap is generated between the heat seal rollers 70, 80 when viewed from the front. In this case, the radial gap that occurs between the heat seal rollers 70 and 80 is a minute gap, but a large range in the length direction of the heat seal rollers 70 and 80 is curved, and a minute gap is formed in that large range. A gap will occur. Therefore, the gap between the heat seal rollers 70 and 80 due to this crown phenomenon is a minute gap of 1 mm or less, but since the thickness of the laminated paper raw material sheet (laminated paper 10X before heat sealing) is as thin as 1 mm or less, the heat seal The heat-sealing surfaces 72a, 82a of the rollers 70, 80 may float from the pre-heat-sealing laminated paper 10X, creating a gap between them. In this case, the heat of the heat-sealing rollers 70, 80 This means that the heat-sealed portion of the pre-heat-sealed laminated paper 10X cannot be pressure-bonded by the pressure-bonding surfaces 72a, 82a.

Therefore, in order to avoid such a problem of the crown phenomenon, when the roller length L of the heat seal rollers 70 and 80 is 1400 mm, the pressing force during thermocompression bonding should be 5.5 to 7.0 mm, as described above. It is preferable that the pressure be within the atmospheric pressure range. When the roller length L of the heat sealing rollers 70, 80 is 1400 mm, and the pressing force during thermocompression bonding is less than 5.5 atm, the laminated paper 10X before heat fusion is thermally fused by the thermocompression convex portions 72, 82. There is a possibility that the part cannot be stably formed (that is, the adhesive force of the heat-sealed part may be insufficient). On the other hand, when the roller length L of the heat seal rollers 70 and 80 is 1400 mm, if the pressing force during thermocompression bonding is set to a value exceeding 7 atm, excessive pressure will be applied to the heat-sealed portion of the laminated paper 10X before heat-sealing. In addition, there is a possibility that the heat-sealed portion may harden during adhesion. Further, when the roller length L of the heat seal rollers 70 and 80 is 1200 mm, the pressing force during thermocompression bonding can be 4.5 atm. Further, when the roller length L of the heat seal rollers 70 and 80 is 1500 mm, the pressing force during thermocompression bonding can be in the range of 7.5 to 8.0 atmospheres. When the roller length L of the heat sealing rollers 70, 80 is 1500 mm, and the pressing force during thermocompression bonding is less than 7.5 atm, the laminated paper 10X before heat fusion is thermally fused by the thermocompression convex portions 72, 82. There is a possibility that the part cannot be stably formed (that is, the adhesive force of the heat-sealed part may be insufficient). On the other hand, when the roller length L of the heat seal rollers 70 and 80 is 1500 mm, if the pressing force during thermocompression bonding is set to a value exceeding 8 atm, excessive pressure will be applied to the heat-sealed portion of the laminated paper 10X before heat-sealing. In addition, there is a possibility that the heat-sealed portion may harden during adhesion.

[Temperature control of heat seal roller]
In the laminated paper manufacturing equipment, in order to reliably heat-fuse the crepe paper as the outer layer sheet and the intermediate layer sheet (non-woven fabric, non-permeable sheet, etc.) at the heat-sealing part of the 10X laminated paper before heat-sealing, heat is applied. The temperature during thermocompression bonding of the seal rollers 70, 80 (hereinafter referred to as "thermocompression bonding temperature") is set within the range of 175 to 200°C, and the temperature distribution is in the longitudinal direction of the heat seal rollers 70, 80. It is preferable to control the temperature so that it remains constant throughout. If the thermocompression bonding temperature of the heat seal rollers 70 and 80 is 175° C. or lower, the crepe paper and the nonwoven fabric cannot be reliably bonded by heat fusion at the heat fusion portion of the pre-heat fusion laminated paper 10X, On the other hand, if the thermocompression bonding temperature is 200°C or higher, the heat-adhesive resin (PP (polypropylene), PE (polyethylene), etc.) of the intermediate layer sheet may harden and deteriorate, or the intermediate layer sheet itself such as nonwoven fabric may harden. There is a possibility that the fusible fiber material (heat-fusible synthetic resin fiber) will no longer exhibit its fusing function (that is, this will make it impossible to bond the crepe paper by fusing). In addition, as shown in FIG. 15(a), the thermocompression bonding temperature of the heat seal rollers 70, 80 is determined by the rotational speed of the heat seal rollers 70, 80 (i.e., the supply speed of the laminated paper 10X before heat sealing, in other words, It is preferable to control the temperature and rotation of the heat seal rollers 70 and 80 in the laminated paper manufacturing apparatus so that the temperature and rotation of the heat seal rollers 70 and 80 are increased or decreased in proportion to the formation speed in the longitudinal direction of the heat-sealed portion.

[Rotation control of heat seal roller]
In the laminated paper manufacturing equipment, in order to reliably heat-fuse the crepe paper as the outer layer sheet and the intermediate layer sheet (non-woven fabric, non-permeable sheet, etc.) at the heat-sealing part of the 10X laminated paper before heat-sealing, heat is applied. After the sealing rollers 70, 80 reach the thermocompression bonding temperature within the above-mentioned setting range, the heat sealing rollers 70, 80 start rotating to form the heat-sealed portion of the pre-heat-sealed laminated paper 10X. do. In addition, the thermocompression bonding temperature of the heat seal rollers 70, 80 is controlled to be constant within the above setting range, but the rotation speed of the heat seal rollers 70, 80 is controlled depending on the thickness of the laminated paper raw material sheet (i.e., the lamination temperature before heat sealing). It is preferable to perform control by increasing or decreasing the amount depending on the thickness of the paper 10X. That is, as shown in FIG. 15(c), the rotational speed of the heat seal rollers 70 and 80 is set in the laminated paper manufacturing apparatus so that it increases or decreases in proportion to the thickness of the laminated paper 10X before heat sealing (base paper thickness). It is preferable to control the rotation of the heat seal rollers 70 and 80. In this case as well, the thermocompression bonding temperature of the heat seal rollers 70, 80 is maintained constant, and the rotational speed (base paper feeding speed) of the heat seal rollers 70, 80 is increased or decreased depending on the thickness of the base paper. Similarly, as shown in FIG. 15(d), the rotational speed of the heat seal rollers 70 and 80 is adjusted so that the rotational speed of the heat seal rollers 70 and 80 increases or decreases in proportion to the thickness of the nonwoven fabric raw material sheet (nonwoven fabric thickness) of the laminated paper 10X before heat sealing. It is also possible to control the rotation of the heat seal rollers 70 and 80 in a paper manufacturing apparatus. In this case as well, the thermocompression bonding temperature of the heat seal rollers 70, 80 is maintained constant, and the rotational speed (base paper feeding speed) of the heat seal rollers 70, 80 is increased or decreased depending on the thickness of the nonwoven fabric. Further, as shown in FIG. 15(b), the thermocompression bonding temperature of the heat seal rollers 70 and 80 is adjusted to increase or decrease in proportion to the thickness of the nonwoven fabric (nonwoven fabric thickness) of the laminated paper 10X before heat sealing. The temperature of the heat seal rollers 70 and 80 can also be controlled by the manufacturing equipment. In this case as well, the rotational speed of the heat seal rollers 70, 80 is maintained constant, and the thermocompression bonding temperature of the heat seal rollers 70, 80 is increased or decreased depending on the thickness of the nonwoven fabric. Here, it is preferable that the thermocompression bonding speed (the length of the row of heat-sealed parts formed on the pre-heat-sealed laminated paper 10X per unit time) by the heat-seal roller is, for example, 20 m/min.

[Uniform temperature control]
As described above, the laminated paper manufacturing apparatus controls the thermocompression bonding temperature of the heat seal rollers 70, 80 so that the temperature distribution is uniform over the entire heat seal rollers 70, 80, and The structure shown in FIG. 12 can be adopted as a structure for this temperature control. Specifically, the heat seal rollers 70 and 80 each have a cylindrical shape with both ends closed by a peripheral wall and a pair of side walls 73 and 83, as shown in FIG. Furthermore, sealed spaces 70S and 80S are formed inside the heat seal rollers 70 and 80, respectively. The internal spaces 70S and 80S of the heat seal rollers 70 and 80 are sealed spaces maintained in a vacuum state. The laminated paper manufacturing apparatus connects external water supply means to the inner spaces 70S and 80S of the heat seal rollers 70 and 80, respectively, and connects the water supply means to the inner spaces 70S and 80S of the heat seal rollers 70 and 80, respectively. In addition to supplying moisture to the heat seal rollers 70 and 80, the temperature of the heat seal rollers 70 and 80 is maintained constant by using steam obtained by heating the moisture. It has become. For example, a laminated paper manufacturing apparatus stores a predetermined amount of water in the internal spaces 70S and 80S of the heat seal rollers 70 and 80 in advance, and heats the water when heating the heat seal rollers 70 and 80. The obtained water vapor is used to maintain the temperature of the heat seal rollers 70, 80 constant, or when the heat seal rollers 70, 80 are operated, saturated water vapor or superheated water vapor is supplied to the internal spaces 70S, 80S. Then, the temperature of the heat seal rollers 70, 80 is maintained constant using the water vapor. In this case, high-temperature steam (for example, saturated steam) is attached to the inner surface of the heat-sealing rollers 70, 80 in a thin layer or film, and the entire heat-sealing roller 70, 80 is coated with the layer or film of water vapor. It is designed to maintain a uniform temperature. Then, the laminated paper manufacturing apparatus heats the heat seal rollers 70, 80 using a predetermined heating means to raise the temperature to the thermocompression bonding temperature before the heat seal rollers 70, 80 start the thermocompression bonding operation. For example, in a laminated paper manufacturing apparatus, an induction coil is wound and disposed inside the heat seal rollers 70 and 80, and an alternating current is output to the induction coil to induce eddy currents in the heat seal rollers 70 and 80. As a result, the heat seal roller is heated to the predetermined thermocompression bonding temperature by Joule heat generation, and controlled to maintain the predetermined temperature constant. In addition to the induction heating by the induction heating means, the temperature stabilization operation by the water vapor heats the heat seal rollers 70 and 80 over the entire circumferential direction and the entire length direction (in particular, over the entire length). The predetermined thermocompression bonding temperature (over the entire surface of the thermocompression bonding surfaces 72a, 82a of the thermocompression bonding convex portions 72, 82) is controlled so as to be maintained uniformly and uniformly. Thereby, the temperature distribution of the thermocompression bonding surfaces 72a, 82a of the thermocompression bonding convex portions 72, 83 of the heat seal rollers 70, 80 is maintained absolutely the same (uniform) over the entire surface. Note that the heating means (heaters) of the heat seal rollers 70 and 80 are preferably of an electric type structure as described above (for example, an induction heating type structure like the induction heating means described above). In this way, it is possible to avoid the risk of oil leakage that would occur when the heating means is an oil heater type, and the temperature distribution of the heat seal rollers 70, 80 is also improved by the heating means itself, compared to an oil heater type. This can contribute to keeping the amount constant.

In addition, the laminated paper manufacturing apparatus adjusts the pressing force of the heat seal rollers 70 and 80 during thermocompression bonding, especially between the thermocompression bonding surface 72a of the thermocompression bonding convex portion 72 and the thermocompression bonding surface 82a of the thermocompression bonding convex portion 82. It is controlled to be constant over the entire surface of the opposing surface. As described above, it is preferable that the laminated paper manufacturing apparatus simultaneously control the temperature distribution and the pressure distribution of the heat seal rollers 70 and 80. Adhesion unevenness in each of the heat-sealed portions 11a and 11b of 11 can be minimized.

[Method for manufacturing laminated paper]
The laminated paper of the present invention, including the invention of the laminated paper 10 of Embodiments 1 to 3 above, is preferably manufactured by the method for manufacturing laminated paper described below. Note that the laminated paper manufacturing apparatus of Embodiment 5 can be suitably used in this method of manufacturing laminated paper.

Embodiment 6 (another example of laminated paper manufacturing apparatus)
In the laminated paper manufacturing apparatus of Embodiment 5, a pair of heat seal rollers 70 and 80 are used as means (hereinafter referred to as "thermal sealing means") for forming the heat sealing part array 11 of the laminated paper 10. However, in addition to this structure, crepe paper can be bonded by high frequency welding or ultrasonic welding as a heat fusing means for forming the heat fusing part rows 11 of the laminated paper 10. It is possible to adopt a configuration in which the adhesive is bonded to an intermediate layer sheet such as a nonwoven fabric (by the fusion action of a heat-sealing component of the intermediate layer sheet). These thermal bonding methods using high frequency welding and ultrasonic welding allow for easy adjustment of bonding temperature by thermal bonding, are available in a variety of materials, and are inexpensive as they are sheets of thermoplastic resin film with a low melting point. It is possible that other materials can be used. For example, in the laminated paper manufacturing apparatus shown in FIG. 16, the heat fusing means is provided with a high frequency sewing machine as a high frequency welding means. The laminated paper manufacturing apparatus according to the sixth embodiment is basically basic except that the pair of heat seal rollers 70 and 80 of the laminated paper manufacturing apparatus according to the fifth embodiment shown in FIG. The apparatus has the same configuration as the laminated paper manufacturing apparatus of Embodiment 5, and has a three-layer structure (three-layered structure) in which a nonwoven fabric 2 is interposed between a pair of crepe papers 1 and is laminated before heat-sealing. The paper 10X is guided and fed to the high-frequency sewing machine 100 by the guide rollers 61 and 62, and the high-frequency sewing machine 100 forms the heat-sealed part array 11 at a predetermined position on the laminated paper 10 during heat-sealing. After fusing, the laminated paper 10Y is guided by guide rollers 63 and 64 and wound around a winding roller 55.

[High frequency sewing machine]
The high-frequency sewing machine 100 has a first welding roller 101 and a second welding roller 102 arranged to face each other, and between the first welding roller 101 and the second welding roller 102, there is a laminated paper before heat-sealing. 10X is sandwiched and high-frequency welded to form the heat-sealed part array 11. At this time, the high frequency current (for thermal welding) applied to the first welding roller 101 and the second welding roller 102 is as described in the laminated paper manufacturing apparatus and laminated paper manufacturing method of Embodiment 5 above. In addition, it is preferable to perform various controls to maintain constant temperature control according to various conditions such as the thickness of the base paper and the thickness of the nonwoven fabric.

[Another aspect of the present invention]
Note that the present invention can also be understood as an invention of a laminated paper, a method for manufacturing a laminated paper, or an apparatus for manufacturing a laminated paper, which will be described below.

First, the laminated paper according to the first aspect of the present invention is composed of a pair of outer layer sheets of crepe paper, and a heat-fusible intermediate layer sheet disposed in a laminated state between the crepe papers, The crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing section array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend, forming a laminated structure. Further, in the laminated paper of the present invention, a printing section is provided on the inner surface of the intermediate layer sheet or the crepe paper, and when the thickness of the crepe paper is set to a wet state, the printing section The thickness is set so that it can be seen from the outside through the paper.

A method for manufacturing a laminated paper according to a second aspect of the present invention is the method for manufacturing a laminated paper according to claim 1, wherein the intermediate layer sheet is made of a nonwoven fabric, and the intermediate layer sheet is made of a nonwoven fabric sheet to be a raw material sheet for the nonwoven fabric. In order to compensate for the shrinkage of the printing section during printing, a nonwoven fabric raw material sheet is used that has a width that is a predetermined percentage larger than the width of the laminated paper that is actually to be obtained, depending on the shrinkage rate.

A laminated paper manufacturing apparatus according to a third aspect of the present invention is the laminated paper manufacturing apparatus according to the first aspect, in which a pair of first and second The first heat seal roller has a thermocompression bonding convex portion in the form of a convex strip corresponding to the heat sealing portion, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface, The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and also seals the circumferential surface of the thermocompression-bonding convexity to the first heat-sealing roller. The thermocompression bonding surface is opposite to the thermocompression bonding surface of the roller, and the width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is equal to that of the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat sealing roller. The width is set to be a certain dimension larger than the width.

In addition, the laminated paper of the present invention from another aspect is composed of crepe paper as a pair of outer layer sheets and a heat-fusible intermediate layer sheet disposed in a laminated state between the crepe paper, The crepe paper is heat-sealed to the intermediate layer sheet to form a laminated structure by a linear heat-sealing line extending in a direction perpendicular to the direction in which the crepe wrinkles of the paper extend, and one of the crepe papers serves as the outer layer sheet. A printing section is provided on the surface of the intermediate layer sheet facing the surface of the intermediate layer sheet, and the thickness of the crepe paper is set such that when the crepe paper is in a wet state, the printing section provided on the surface of the intermediate layer sheet is formed through the crepe paper. The thickness is set so that it can be visually recognized from the outside, and even when the crepe paper is dry, the printed portion provided on the intermediate layer sheet can be seen from the outside through the crepe paper, and when the crepe paper is hydrated, the printed portion is visible from the outside. The crepe paper is arranged so that the transparency of the printed portion provided on the intermediate layer sheet from the crepe increases, and the visibility of the printed portion provided on the intermediate layer sheet from the outside through the crepe paper increases. Among these, at least the thickness of the crepe paper on the side where the printing section is provided in the intermediate layer sheet is set. The laminated paper of the present invention is composed of crepe paper as a pair of outer layer sheets and a heat-fusible intermediate layer sheet disposed in a laminated state between the crepe papers, and the crepe wrinkles of the crepe paper are The crepe paper is heat-sealed to the intermediate layer sheet to form a laminated structure by a linear heat-sealing section row extending in a direction perpendicular to the extending direction of the crepe paper. A printing section may be provided on the inner surface, and the thickness of the crepe paper may be set to a thickness such that the printing section is visible from the outside through the crepe paper when the crepe paper is in a wet state. can.

Further, the method for manufacturing a laminated paper of the present invention according to another aspect is the method for manufacturing a laminated paper according to the above-mentioned another aspect, wherein the intermediate layer sheet is made of a nonwoven fabric, and the outer sheath is made of polyethylene and the inner layer is made of polyethylene. A non-water-absorbing air-through type nonwoven fabric manufactured by bonding fiber-to-fiber composite fibers with a core made of polyethylene terephthalate without using an adhesive using an air-through method is used, and the printing section is printed using a printing method. In order to compensate for shrinkage during printing of the printed part on the nonwoven fabric raw material sheet that will be the raw material sheet of the nonwoven fabric, by using flexographic printing technology and using water-based ink or ultraviolet curable ink as the printing ink. The printing section is printed on the nonwoven fabric using a nonwoven fabric raw material sheet having a width that is a predetermined proportion larger than the width of the laminated paper that is actually to be obtained, depending on its shrinkage rate. In addition, in the method for producing a laminated paper of the present invention, the intermediate layer sheet is made of a nonwoven fabric, and in order to compensate for the shrinkage during printing of the printing part on the nonwoven fabric raw material sheet that becomes the raw material sheet of the nonwoven fabric, the shrinkage rate is adjusted. Accordingly, it is also possible to use a nonwoven fabric raw material sheet having a width that is a predetermined proportion larger than the width of the laminated paper to be actually obtained.

A laminated paper manufacturing apparatus according to another aspect of the present invention is the laminated paper manufacturing apparatus according to another aspect of the present invention, in which a pair of first and second heat-sealing parts is used to form the heat-sealing part row. The first heat seal roller has a thermocompression bonding convex portion in the form of a convex strip corresponding to the heat sealing portion, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. The second heat seal roller has a thermocompression bonding convex portion in the form of a convex strip facing the thermocompression bonding convex portion of the first heat seal roller, and also has a circumferential surface of the thermocompression bonding convex portion that faces the thermocompression bonding convex portion of the first heat seal roller. The width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat seal roller is the width of the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat seal roller. The width is set to be a certain dimension larger than the .

Alternatively, the present invention can also be understood as an invention of a laminated paper, a method for manufacturing a laminated paper, or an apparatus for manufacturing a laminated paper, which will be described below.

First, the present invention consists of a pair of outer layer sheets of crepe paper and a heat-fusible intermediate layer sheet disposed in a laminated state between the crepe papers, and the crepe paper has crepe wrinkles extending in the direction in which the crepe wrinkles of the crepe paper extend. The crepe paper is heat-sealed to the intermediate layer sheet to form a laminated structure by a linear heat-sealing section row extending in a direction perpendicular to and the thickness of the crepe paper is set to such a thickness that the printing section can be visually recognized from the outside through the crepe paper when the crepe paper is in a wet state. You can also do it.

Further, the above invention further provides that the intermediate layer sheet is made of a material capable of printing the printing part, and is made of a material capable of being bonded by heat-sealing crepe paper as the outer layer sheet in the heat-sealing part row. It can also be understood as a laminated paper characterized in that the printed part is provided on the surface of the nonwoven fabric that faces one of the crepe papers serving as the outer layer sheet.

Moreover, the above-mentioned invention can also be understood as a laminated paper characterized in that the printing part is provided on the inner surface of one of the crepe papers as the outer layer sheet.

Further, in the above invention, the intermediate layer sheet is made of an impermeable sheet made of synthetic resin that blocks the permeation of moisture and/or oil, and the printed portion is provided on the impermeable sheet as the intermediate layer sheet. It can also be understood as laminated paper that is characterized by being

Further, the above invention can also be understood as a laminated paper characterized in that the nonwoven fabric has a thickness in the range of 15 to 25 g/m ² in terms of basis weight.

Further, the above invention can also be understood as a laminated paper characterized in that the crepe paper has a thickness within a range of 20 to 50 g/m ² .

Further, in the invention, the widthwise heat-sealing part interval, which is the interval between the widthwise center lines of the adjacent heat-sealing part rows, is within a predetermined range depending on the crepe ratio range of the crepe paper. When the crepe rate of the crepe paper is set to an arbitrary value, and the crepe rate of the crepe paper is within the range of 20% to 26%, the interval between the heat-sealed parts in the width direction is set within the range of 10 mm to 15 mm, and the crepe rate of the crepe paper is set within the range of 10 mm to 15 mm. When the crepe rate is within the range of 26% to 30%, it can also be understood as a laminated paper characterized in that the interval between the heat-sealed parts in the width direction is set within the range of 15 to 25 mm.

The present invention also provides a method for producing a laminated paper according to the above invention, wherein the intermediate layer sheet is made of a nonwoven fabric, and the printing portion compensates for shrinkage during printing on a nonwoven fabric raw material sheet that becomes a raw material sheet for the nonwoven fabric. Therefore, it can also be understood as a method for producing laminated paper characterized by using a nonwoven fabric raw material sheet having a width that is a predetermined proportion larger than the width of the laminated paper that is actually to be obtained, depending on its shrinkage rate. .

Further, the present invention provides a laminated paper manufacturing apparatus according to the above invention, which comprises a pair of first and second heat seal rollers for forming the heat sealing part row, and the first heat seal roller The roller has a thermocompression bonding convex portion in the form of a convex strip corresponding to the heat sealing portion, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface, and the second heat seal roller has a thermocompression bonding surface that corresponds to the heat sealing portion. It has a thermocompression bonding convex portion in the form of a convex strip that faces the thermocompression bonding convex portion of the heat seal roller, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface facing the thermocompression bonding surface of the first heat sealing roller. , the width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is set to be larger by a certain dimension than the width of the thermocompression bonding surface of the thermocompression bonding convexity of the first heat sealing roller. It can also be understood as a laminated paper manufacturing device characterized by the following.

By the way, to explain the present invention according to another aspect, the laminated paper according to the first aspect of the present invention is arranged in a laminated state between a pair of crepe papers as outer layer sheets and the pair of crepe papers. The crepe paper is made of a non-woven fabric as a heat-fusible intermediate layer sheet, and the crepe paper is formed into the intermediate layer sheet by a linear heat-seal line extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. The crepe paper is heat-sealed to form a laminated structure, and the crepe ratio of the crepe paper is set within the range of 20% to 30%, and the interval of the heat-sealed parts in the width direction of the row of heat-sealed parts is 10 mm to 25 mm. Within the range of the widthwise heat-sealed part interval, the widthwise heat-sealed part interval is increased in proportion to an increase in the crepe rate of the crepe paper.

Further, to explain the present invention according to another aspect, the laminated paper according to the second aspect of the present invention is arranged in a laminated state between a pair of crepe papers as outer layer sheets and the pair of crepe papers. The crepe paper is made of a non-woven fabric as a heat-fusible intermediate layer sheet, and the crepe paper is formed into the intermediate layer sheet by a linear heat-seal line extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. When the crepe paper has a crepe ratio of 20% to 26%, the spacing of the heat-sealed parts in the width direction of the row of heat-sealed parts is within the range of 10 mm to 15 mm. and when the crepe rate of the crepe paper is within the range of 26% to 30%, the heat-sealed part interval in the width direction of the heat-sealed part row is set within the range of 15 to 25 mm, and the Within the range of the interval between the heat-sealed parts in the width direction, the interval between the heat-sealed parts in the width direction is increased in proportion to an increase in the crepe rate of the crepe paper.

The laminated paper of the present invention, the method for manufacturing laminated paper, and the apparatus for manufacturing laminated paper can be suitably applied to paper towel products. It can be applied to paper towel products such as Kannonori, but in addition to this, roll-shaped base paper can also be made into a product as it is and used as a base paper for automatic paper towel manufacturing machines. In addition to products, it can also be applied to sanitary products used for purposes such as nursing care and nursing care.

1: Crepe paper, 2: Nonwoven fabric (thermal adhesive sheet)
10, 40, 50, 60, 70, 80: Laminated paper 11, 12, 41, 42, 51, 61, 82: Heat-fused portion 11a, 12a, 41a, 42a, 51a, 61a, 82a: Long point 11b, 12b, 41b, 42b, 51b, 61b, 82b: Non-fused portion 30: Second heat seal roller (heat seal roller)
31: First heat seal part (heat seal part)
32: Second heat seal part (heat seal part)
31a, 32a: Pressing protrusion, 31b, 32b: Non-pressing part

Claims (26)

A heat seal roller for a laminated paper manufacturing device,
The laminated paper is
crepe paper as a pair of outer layer sheets;
a nonwoven fabric as a heat-fusible intermediate layer sheet arranged in a laminated state between the pair of crepe papers,
The crepe paper is heat-sealed to the intermediate layer sheet by a linear heat-sealing part array extending in a direction perpendicular to the direction in which the crepe wrinkles of the crepe paper extend to form a laminated structure;
comprising a first heat-seal roller and a second heat-seal roller forming a pair for forming the heat-sealed part row on the laminated paper;
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface,
The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
The width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is set to be larger by a certain dimension than the width of the thermocompression bonding surface of the thermocompression bonding convexity of the first heat sealing roller, and When the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat sealing roller and the thermocompression bonding surface of the thermocompression bonding convexity of the second heat sealing roller are placed facing each other in a substantially close contact state, the first on both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the heat seal roller, so that certain width portions at both widthwise ends of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller are exposed. At the same time,
On both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat seal roller, a pair of side surfaces extend at a predetermined inclination angle that is an obtuse angle with the thermocompression bonding surface. Features a heat seal roller for laminated paper manufacturing equipment. The thermocompression bonding surface of the thermocompression bonding convex portion has a linear narrow band portion that extends linearly in plan view, and a semicircular shape at both longitudinal ends of the linear narrow band portion, corresponding to the heat fusion bonding portion row. 2. The heat seal roller for a laminated paper manufacturing apparatus according to claim 1, further comprising a curved portion. When the laminated paper is a laminated paper having different crepe rates, the heat in the width direction is increased in proportion to the increase in the crepe rate of the crepe paper within the range of the interval between the heat-sealed parts in the width direction. This increases the distance between the fused parts,
In the first heat seal roller, regarding the thermocompression bonding convex portions, the interval between adjacent thermocompression bonding surfaces of the thermocompression bonding convex portions in each row is the same as the spacing of the heat sealing portions of the laminated paper. In the case where the crepe ratio of the crepe paper of the laminated paper is set to be a product with different crepe ratios, the laminated paper is proportional to the increase in the crepe ratio of the crepe paper within the range of the heat-sealed part interval in the width direction. When the interval between the heat-sealed parts in the width direction is increased, the interval between the adjacent thermo-compression bonding surfaces of the thermo-compression bonding convex portion is also configured to increase correspondingly. The heat seal roller of the laminated paper manufacturing apparatus according to claim 1 or 2, characterized in that the laminated paper of the product according to claim 1 is manufactured. A laminated paper manufacturing apparatus in which the heat seal roller according to any one of claims 1 to 3 can be freely attached,
The roller lengths of the first heat seal roller and the second heat seal roller are set within a range of 1200 mm to 1500 mm,
The roller diameters of the first heat seal roller and the second heat seal roller are set within a range of 180 mm to 300 mm,
Production of laminated paper characterized in that the pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-fused portion of the laminated paper before heat-sealing, can be set to a value of 2 atmospheres or more. Device. The pressing force during thermocompression bonding can be freely set within the range of 5.5 to 7.0 atm when the roller length of the first heat seal roller and the second heat seal roller is 1400 mm. 5. The laminated paper manufacturing apparatus according to claim 4, wherein when the roller length of the heat seal roller and the second heat seal roller is 1500 mm, the pressure can be freely set within the range of 7.5 to 8.0 atm. A laminated paper manufacturing apparatus in which the heat seal roller according to any one of claims 1 to 3 can be freely attached,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, can be freely set within the range of 175 to 200 ° C.,
Temperature control and rotation control of the first heat seal roller and the second heat seal roller so that the thermocompression bonding temperature increases or decreases in proportion to the rotational speed of the first heat seal roller and the second heat seal roller. A laminated paper manufacturing device characterized by being able to freely perform the following steps. A laminated paper manufacturing apparatus in which the heat seal roller according to any one of claims 1 to 3 can be freely attached,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotational speed of the first heat seal roller and the second heat seal roller is adjusted. Rotation control is performed by increasing or decreasing the rotational speed of the first heat seal roller and the second heat seal roller according to the base paper thickness so that the rotation speed increases or decreases in proportion to the base paper thickness, which is the thickness of the laminated paper before heat sealing. A laminated paper manufacturing device characterized by being able to freely perform various operations. A laminated paper manufacturing apparatus in which the heat seal roller according to any one of claims 1 to 3 can be freely attached,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotational speed of the first heat seal roller and the second heat seal roller is adjusted. The rotational speed of the first heat seal roller and the second heat seal roller is increased or decreased in accordance with the nonwoven fabric thickness so that the rotation speed of the first heat seal roller and the second heat seal roller is increased or decreased in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. A manufacturing device for laminated paper, characterized in that the rotation can be controlled freely. A laminated paper manufacturing apparatus in which the heat seal roller according to any one of claims 1 to 3 can be freely attached,
The rotation speeds of the first heat seal roller and the second heat seal roller are maintained constant, and the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant. The thermocompression bonding temperature of the first heat seal roller and the second heat seal roller is increased or decreased in accordance with the thickness of the nonwoven fabric so that it increases or decreases in proportion to the thickness of the nonwoven fabric, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. A laminated paper manufacturing device characterized by being able to freely change and control temperature. A laminated paper manufacturing apparatus in which the heat seal roller according to any one of claims 1 to 3 can be freely attached,
A sealed space is formed inside each of the first heat seal roller and the second heat seal roller, and the inner spaces of the first heat seal roller and the second heat seal roller are in a vacuum state. It is a closed space maintained at
External water supply means is connected to the internal spaces of the first heat seal roller and the second heat seal roller, respectively, and the water of the first heat seal roller and the second heat seal roller is supplied from the water supply means to the inner spaces of the first heat seal roller and the second heat seal roller. Moisture is supplied to the internal spaces, respectively, and when the first heat seal roller and the second heat seal roller are heated, the high temperature steam obtained by heating the moisture is supplied to the first heat seal roller and the second heat seal roller. The first heat seal roller and the second heat seal roller are entirely covered with water vapor in a thin layer or film form on the inner surface of the second heat seal roller. The heat seal roller and the second heat seal roller are maintained at a uniform temperature over the entire circumferential direction and length direction, and the first heat is applied over the entire surface of the thermocompression bonding surface of all the thermocompression bonding convex parts. A laminated paper manufacturing apparatus characterized in that the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the seal roller and the second heat seal roller, can be freely controlled so as to be maintained uniformly and uniformly. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-fusible intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat seal roller and a second heat seal roller forming a pair for forming the heat sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface;
The second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding protrusion is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
The roller lengths of the first heat seal roller and the second heat seal roller are set within a range of 1200 mm to 1500 mm,
The roller diameters of the first heat seal roller and the second heat seal roller are set within a range of 180 mm to 300 mm,
Production of laminated paper characterized in that the pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-fused portion of the laminated paper before heat-sealing, can be freely set to a value of 2 atmospheres or more. Device. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-sealable intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat-sealing roller and a second heat-sealing roller forming a pair for forming the heat-sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface,
The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
The pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-fused portion of the laminated paper before heat-sealing, is when the roller length of the first heat-sealing roller and the second heat-sealing roller is 1400 mm. In this case, the pressure can be freely set within the range of 5.5 to 7.0 atm, and if the roller length of the first heat seal roller and the second heat seal roller is 1500 mm, the pressure is set within the range of 7.5 to 8.0 atm. A laminated paper manufacturing device characterized by being able to be set freely within a range. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-fusible intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat seal roller and a second heat seal roller forming a pair for forming the heat sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface;
The second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding protrusion is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, can be freely set within the range of 175 to 200 ° C.,
Temperature control and rotation control of the first heat seal roller and the second heat seal roller so that the thermocompression bonding temperature increases or decreases in proportion to the rotational speed of the first heat seal roller and the second heat seal roller. A laminated paper manufacturing device characterized by being able to freely perform the following steps. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-sealable intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat-sealing roller and a second heat-sealing roller forming a pair for forming the heat-sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface,
The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotational speed of the first heat seal roller and the second heat seal roller is adjusted. Rotation control is performed by increasing or decreasing the rotational speed of the first heat seal roller and the second heat seal roller according to the base paper thickness so that the rotation speed increases or decreases in proportion to the base paper thickness, which is the thickness of the laminated paper before heat sealing. A laminated paper manufacturing device characterized by being able to freely perform various operations. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-sealable intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat-sealing roller and a second heat-sealing roller forming a pair for forming the heat-sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface,
The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotational speed of the first heat seal roller and the second heat seal roller is adjusted. The rotational speed of the first heat seal roller and the second heat seal roller is increased or decreased in accordance with the nonwoven fabric thickness so that the rotation speed of the first heat seal roller and the second heat seal roller is increased or decreased in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. A manufacturing device for laminated paper, characterized in that the rotation can be controlled freely. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-fusible intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat seal roller and a second heat seal roller forming a pair for forming the heat sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface;
The second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding protrusion is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
The rotational speeds of the first heat seal roller and the second heat seal roller are maintained constant, and the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant. The thermocompression bonding temperature of the first heat seal roller and the second heat seal roller is increased or decreased in accordance with the nonwoven fabric thickness so that it increases or decreases in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. A laminated paper manufacturing device characterized by being able to freely change and control temperature. It consists of crepe paper as a pair of outer layer sheets and a nonwoven fabric as a heat-sealable intermediate layer sheet arranged in a laminated state between the pair of crepe papers, and the direction in which the crepe wrinkles of the crepe paper extend An apparatus for producing laminated paper which has a laminated structure by thermally fusing the crepe paper to the intermediate layer sheet by linear heat fusing part rows extending in orthogonal directions, the apparatus comprising:
comprising a first heat-sealing roller and a second heat-sealing roller forming a pair for forming the heat-sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface,
The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
Furthermore,
A sealed space is formed inside each of the first heat seal roller and the second heat seal roller, and the inner spaces of the first heat seal roller and the second heat seal roller are in a vacuum state. It is a closed space maintained at
External water supply means is connected to the internal spaces of the first heat seal roller and the second heat seal roller, respectively, and the water of the first heat seal roller and the second heat seal roller is supplied from the water supply means to the inner spaces of the first heat seal roller and the second heat seal roller. Moisture is supplied to the internal spaces, respectively, and when the first heat seal roller and the second heat seal roller are heated, the high temperature steam obtained by heating the moisture is supplied to the first heat seal roller and the second heat seal roller. The first heat seal roller and the second heat seal roller are entirely covered with water vapor in a thin layer or film form on the inner surface of the second heat seal roller. The heat seal roller and the second heat seal roller are maintained at a uniform temperature over the entire circumferential direction and the entire length direction, and the first and second heat seal rollers are A laminated paper manufacturing apparatus characterized in that the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the heat seal roller No. 2, can be freely controlled so as to be maintained uniformly and evenly. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a laminated paper manufacturing apparatus that heat-seals the crepe paper to the intermediate layer sheet to form a laminated structure using a linear array of heat-sealed parts extending in the direction,
The manufacturing device includes a first heat seal roller and a second heat seal roller forming a pair for forming the heat sealing part row,
The first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the heat fusion bonding portion row, and a peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface,
The second heat-sealing roller has a thermocompression-bonding convex portion in the form of a convex strip that faces the thermocompression-bonding convexity of the first heat-sealing roller, and the peripheral surface of the thermocompression-bonding convexity is heated by the first heat-sealing roller. A thermocompression bonding surface opposite to the thermocompression bonding surface of the seal roller,
The width of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller is set to be larger by a certain dimension than the width of the thermocompression bonding surface of the thermocompression bonding convexity of the first heat sealing roller, and When the thermocompression bonding surface of the thermocompression bonding convex portion of the first heat sealing roller and the thermocompression bonding surface of the thermocompression bonding convexity of the second heat sealing roller are placed facing each other in a substantially close contact state, the first on both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the heat seal roller, so that certain width portions at both widthwise ends of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat sealing roller are exposed. At the same time,
On both sides in the width direction of the thermocompression bonding surface of the thermocompression bonding convex portion of the second heat seal roller, a pair of side surfaces extend in an inclined manner at a predetermined inclination angle that is an obtuse angle with the thermocompression bonding surface,
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. The thermocompression bonding surface of the thermocompression bonding convex portion of the first heat seal roller has a linear narrow band portion extending linearly in plan view, corresponding to the heat sealing portion row, and a length of the linear narrow band portion. It is composed of semicircular curved parts at both ends in the direction,
Each of the heat-sealing parts of the heat-sealing part row of the laminated paper is arranged in a straight line in the length direction of the laminated paper, corresponding to the outer shape of the heat-sealing surface of the heat-sealing convex part of the first heat-sealing roller. 53. The laminated paper according to claim 52, characterized in that the laminated paper is comprised of a linear narrow strip-shaped portion that extends in a straight line, and semicircular portions at both longitudinal ends of the linear narrow strip-shaped portion. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of heat-sealed parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
The roller lengths of the first heat seal roller and the second heat seal roller are set within a range of 1200 mm to 1500 mm,
The roller diameters of the first heat seal roller and the second heat seal roller are set within a range of 180 mm to 300 mm,
The pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-fused portion of the laminated paper before heat-sealing, is set to a value of 2 atmospheres or more,
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of heat-sealed parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
The pressing force during thermo-compression bonding, which is the pressing force applied from the thermo-compression convex portion to the heat-fused portion of the laminated paper before heat-sealing, is when the roller length of the first heat-sealing roller and the second heat-sealing roller is 1400 mm. In this case, the pressure is set within the range of 5.5 to 7.0 atm, and when the roller length of the first heat seal roller and the second heat seal roller is 1500 mm, the pressure is set within the range of 7.5 to 8.0 atm. is set within
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of thermally fused parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat sealing portions, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is set within a range of 175 to 200 ° C.,
Temperature control and rotation control of the first heat seal roller and the second heat seal roller so that the thermocompression bonding temperature increases or decreases in proportion to the rotational speed of the first heat seal roller and the second heat seal roller. and
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of heat-sealed parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat-sealing roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat-sealing portions, and the peripheral surface of the thermocompression bonding convexity is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotational speed of the first heat seal roller and the second heat seal roller is adjusted. Rotation control is performed by increasing or decreasing the rotational speed of the first heat seal roller and the second heat seal roller according to the base paper thickness so that the rotation speed increases or decreases in proportion to the base paper thickness, which is the thickness of the laminated paper before heat sealing. death,
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of thermally fused parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat sealing portions, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant, and the rotational speed of the first heat seal roller and the second heat seal roller is adjusted. The rotational speed of the first heat seal roller and the second heat seal roller is increased or decreased in accordance with the nonwoven fabric thickness so that the rotation speed of the first heat seal roller and the second heat seal roller is increased or decreased in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. to control the rotation,
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of thermally fused parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat sealing portions, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
The rotational speeds of the first heat seal roller and the second heat seal roller are maintained constant, and the thermocompression bonding temperature, which is the temperature during thermocompression bonding of the first heat seal roller and the second heat seal roller, is maintained constant. The thermocompression bonding temperature of the first heat seal roller and the second heat seal roller is increased or decreased in accordance with the nonwoven fabric thickness so that it increases or decreases in proportion to the nonwoven fabric thickness, which is the thickness of the nonwoven fabric raw material sheet of the laminated paper before heat sealing. change and control the temperature,
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between. Consisting of a pair of crepe papers and a nonwoven fabric as a heat-adhesive intermediate layer sheet arranged in a laminated state between the pair of crepe papers, the direction is perpendicular to the direction in which the crepe wrinkles of the crepe paper extend. A laminated paper manufactured by a method for manufacturing a laminated paper in which the crepe paper is thermally fused to the intermediate layer sheet to form a laminate structure using a linear array of thermally fused parts extending in the direction,
The manufacturing method includes:
Using a laminated paper manufacturing apparatus equipped with a first heat seal roller and a second heat seal roller forming a pair for forming the heat-sealing part row,
In the laminated paper manufacturing apparatus, the first heat seal roller has a thermocompression bonding convex portion in a convex strip shape corresponding to the row of heat sealing portions, and the peripheral surface of the thermocompression bonding convex portion is a thermocompression bonding surface. year,
In the laminated paper manufacturing apparatus, the second heat-sealing roller has a thermocompression-bonding protrusion in the form of a convex strip that faces the thermocompression-bonding protrusion of the first heat-sealing roller, and the thermocompression-bonding protrusion of the thermocompression-bonding protrusion has a convex strip-like shape. The peripheral surface is a thermocompression bonding surface opposite to the thermocompression bonding surface of the first heat seal roller,
Furthermore,
A sealed space is formed inside each of the first heat seal roller and the second heat seal roller, and the inner spaces of the first heat seal roller and the second heat seal roller are in a vacuum state. It is a closed space maintained at
External water supply means is connected to the internal spaces of the first heat seal roller and the second heat seal roller, respectively, and the water of the first heat seal roller and the second heat seal roller is supplied from the water supply means. Moisture is supplied to the internal space, respectively, and when the first heat seal roller and the second heat seal roller are heated, high temperature steam obtained by heating the moisture is supplied to the first heat seal roller and the second heat seal roller. The first heat seal roller and the second heat seal roller are entirely adhered to the inner surface of the second heat seal roller in a thin layer or film form, and the first heat seal roller and the second heat seal roller are entirely covered with the layer or film water vapor. The heat seal roller and the second heat seal roller are maintained at a uniform temperature over the entire circumferential direction and the entire length direction, and the first and second heat seal rollers are The thermocompression bonding temperature, which is the temperature during thermocompression bonding of the heat seal roller No. 2, is controlled so as to be maintained uniformly and uniformly,
The row of heat-sealed parts of the laminated paper connects the pair of crepe paper and the intermediate layer sheet to a thermo-compression-bonded convex part of the first heat-seal roller and a thermo-compression-bond convex part of the second heat-seal roller. A laminated paper characterized in that it is formed by thermocompression bonding between.

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