JP2017066538A - Kitchen paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide kitchen paper which is a nested type excellent in an oil absorption amount.SOLUTION: Kitchen paper comprises: almost rectangular-shaped embossment sections 2 in which, 20-80 pieces of unit recess embossments 22A, 22B whose bottom face area is 1.5-2.5 mm, are arranged with intervals between centers being 5.0-7.5 mm; and non-embossment sections 3 which are arranged between the embossment sections 2, partitioning the embossment sections 2, which have a width of 4.0-6.5 mm. The pieces of crepe paper which have 4-10% of an embossment area ratio are configured so that, the unit recess embossments 22A, 22B on one surface crepe paper and unit recess embossments 22A, 22B on the other surface crepe paper are separated. In an extension direction D1 of the non-embossment section 3, a recess embossment arrangement in which, the unit recess embossments 22A, 22B on one surface and the unit recess embossments 22A, 22B on the other surface are alternately arranged, is provided. An interval between the embossment section 2 on one surface crepe paper and the embossment section 2 on the other crepe paper, is 2.0-6.5 mm.SELECTED DRAWING: Figure 1

Description

  The present invention relates to kitchen paper, and more particularly to a two-ply kitchen paper laminated in a nested format.

  Kitchen paper is used not only for wiping and cleaning kitchen surroundings and cooking utensils, but also for dropping lids, cooking oil, and absorbing excess oil in deep-fried foods. Water absorption performance such as water absorption performance and oil absorption performance is important. .

  On the other hand, some kitchen papers are formed by laminating two sheets of crepe paper that has been embossed. And in this kind of kitchen paper, the water absorption performance is largely due to the configuration of the crepe paper mainly composed of pulp, which is a hydrophilic fiber, and the configuration related to embossing may have a great influence on the oil absorption performance. .

  Here, in the laminated structure of two sheets of crepe paper subjected to embossing in kitchen paper, in particular, tip-to-tip (TipToTip) in which the tops of the embossed convex parts of the two crepe papers are bonded to each other. ) Type and so that the top of the embossed convex part of one crepe paper is located on the non-embossed convex part of the other crepe paper (the position that is not convex as seen from one facing crepe paper) It is divided roughly into what is called a nested type that is positioned alternately and bonded.

  The tip-to-tip type laminated structure has many portions where the crepe papers to be laminated are spaced apart from each other, and there is a thickness (height) in the gap between them, and the oil absorption is particularly excellent. On the other hand, the paper thickness as a whole tends to increase. For this reason, when it is made into the roll shape which is a commercial aspect of kitchen paper, and the laminated bundle shape of a plurality of sheets, the roll winding diameter becomes excessively large, or the bundle thickness (bundle height) becomes excessively thick. In order to prevent an increase in logistics costs and packing material costs, the crepe paper itself is made to have a low weight per square so as to keep the paper thickness of the crepe paper itself, and it is easy to reduce stiffness after liquid absorption and retains oil. Many of them are not effective in terms of their properties (hardness of oil oozing). Moreover, since the embossed convex parts of each crepe paper are bonded together, the action of drawing oil between the layers is weak, and the oil absorption speed is slow. Furthermore, since the bottom positions (the top surfaces of the embossed convex portions) of the embossed concave portions that have been stepped and solidified by the convex embossing rolls become adhesion positions, they tend to be hard and inferior. In other words, the tip-to-tip type laminated structure tends to increase the oil absorption amount, but the oil absorption speed is slow, and the basis weight of the crepe paper itself is low. In addition, it tends to be hard and inferior, and there are many products that are particularly specialized in wiping off oil stains as compared with applications for absorbing liquid foods and for packaging foods.

  On the other hand, since the top of the embossed convex part of one crepe paper is positioned on the non-embossed convex part of the other crepe paper, the nested structure of the laminated structure is not limited even if the basis weight or thickness of the crepe paper is increased. The thickness of the paper can be reduced, and the embossed convex pillars connecting the crepe papers are increased, so that it is solid and excellent in water absorption (water absorption amount and water absorption speed) and oil absorption speed. In addition, the bottom position of the embossed recess (top surface of the embossed convex part) that is stepped and solidified by the convex embossing roll in one crepe paper and the non-embossed convex part of the other crepe paper are in the bonding position. It tends to be expressed easily. However, the nested type laminated structure tends to have a lower oil absorption than the tip-to-tip type laminated structure. For this reason, many nested stacked structures are specialized for wiping off moisture and oil adhering to ingredients such as vegetables.

JP2013-208298A JP 2008-208501 A Japanese Patent Laid-Open No. 2004-244772 JP 2008-1113695 A Japanese Patent Laid-Open No. 2003-116741

  Therefore, the main problem of the present invention is a layered structure of a nested type, and the tip-to-tip type of laminated structure without changing the overall thickness, speed of water absorption and oil absorption speed, and flexibility. It is to provide a kitchen paper having a characteristic embossed pattern that achieves an oil absorption equal to or higher than the above.

  The present invention and effects obtained by solving the above problems are as follows.

<Invention of Claim 1>
Two crepe papers to which embossing is applied are kitchen papers in which embossed convex part formation surfaces are faced to form a nested laminated structure, and concave and embossed parts corresponding to the embossed convex parts are present on the front and back sides. And
The basis weight per sheet of the crepe paper is 15 to 35 g / m ² ,
The embossed pattern given to each crepe paper has a substantially rectangular shape in which 20 to 80 unit concave embosses having a bottom surface area of 1.5 to 3.0 mm ² are arranged with a center-to-center spacing of 5.0 to 7.5 mm. The embossed section has an embossed section and a non-embossed section having a line shape of 4.0 to 6.5 mm positioned between the embossed sections and separating the embossed sections, and the embossed area ratio is 4 to 10%. And
Embossed convex portions of each crepe paper are stacked without contact, and unit concave embosses on one side of the crepe paper and unit concave embosses on the other side are alternately arranged in the extending direction of the non-embossed section in a plan view. Having a concave embossed arrangement, and the distance between the embossed section of the crepe paper on one side and the embossed section of the crepe paper on the other side in a plan view is 2.0 to 6.5 mm,
Kitchen paper characterized by that.

<Invention of Claim 2>
In a plan view, the crepe paper on one side and the crepe paper on the other side are in the direction of extension of the non-embossed section. The kitchen paper of claim 1, having a concave embossing arrangement in which the embossing is located.

<Invention of Claim 3>
The kitchen paper of Claim 1 or 2 which has 400-500 unit concave embossing per 120 mm square.

<Invention of Claim 4>
The kitchen paper according to any one of claims 1 to 3, wherein an adhesive paste is applied only to a top portion of an embossed convex portion of one crepe paper, and both crepe papers are bonded through the adhesive paste. .

  According to the present invention as described above, the laminated structure is a nested type, and the oil absorption is equal to or more than that of the tip-to-tip type laminated structure while maintaining the advantages of thin thickness, high oil absorption speed, and flexibility. A kitchen paper having a characteristic embossing pattern to achieve the quantity is provided.

It is a top view for demonstrating the crepe paper which concerns on this invention. It is a top view for demonstrating the kitchen paper which concerns on this invention. It is sectional drawing for demonstrating the kitchen paper which concerns on this invention. It is another sectional view for explaining kitchen paper concerning the present invention. It is a top view for demonstrating the kitchen paper of the comparative example 1. FIG. It is a top view for demonstrating the kitchen paper of the comparative example 2. FIG. It is a top view for demonstrating the kitchen paper of the comparative example 5. FIG. It is a top view for demonstrating the kitchen paper of the comparative example 8.

  Next, embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a plan view of a crepe paper according to the present invention, and shows a part (A part) in an enlarged manner. FIG. 2 is a plan view of the kitchen paper in which the crepe paper is laminated, and shows a part (B portion) in an enlarged manner. 3 is a CC cross section of FIG. 2, and FIG. 4 is a DD cross section of FIG.

  In the kitchen paper 1 according to the present embodiment, the embossed convex portion forming surfaces 10x of the two crepe papers 10A and 10B to which embossing is applied are faced and integrated, and the embossed convex portions 21A and 21B are formed on the front and back sides. Corresponding concave embosses 22A and 22B are present. And especially emboss convex part 21A (21B) in crepe paper 10A (10B) of one side is located in non-emboss convex part 23B (23A) (parts other than an emboss convex part) of crepe paper 10B (10A) of the other side. In other words, it has a so-called nested structure.

The basis weight of the crepe papers 10A and 10B constituting the kitchen paper 1 is 15 to 35 g / m ² , preferably 17 to 25 g / m ² . The basis weight is based on JIS P 8124 (1998). When the basis weight is within the above range, sufficient liquid diffusibility can be obtained when liquid such as water or oil comes into contact with the paper surface, and in particular, the water absorption performance is sufficient. It is easy to obtain the effect of the characteristic embossing configuration of the present invention. Moreover, if it is in the range of the said basic weight, the advantage of the nested type kitchen paper, such as the softness in the case of wiping operation, and the followable | trackability with respect to a wiping surface, will not fall. Here, regarding the measurement of the basis weight per sheet of the crepe paper 10A, 10B according to the present invention, the basis weight of the kitchen paper 1 having a laminated structure is measured, and this is divided by the number of stacked sheets, that is, two sheets. The numerical value. Strictly speaking, the basis weight includes the adhesive paste 40 for forming a laminated structure, but the mass of the adhesive paste 40 is usually compared to the mass of the crepe paper 10A, 10B itself that does not include the adhesive paste 40. Thus, it is negligible, and at least in the relationship between the embossing structure in the present invention and the effects unique to the present invention that are played together with them, it can be sufficiently ignored.

  On the other hand, the crepe paper 10A, 10B has a fiber material mainly composed of pulp. The known composition in the kitchen paper 1 can be employ | adopted for the pulp composition. In particular, the pulp should contain 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass, and the effects unique to the present invention become remarkable. Pulp composition is, for example, an appropriate ratio of softwood pulp such as NBKP (conifer kraft pulp) or NUKP (unleaved softwood pulp) and broadleaf wood pulp such as LBKP (hardwood kraft pulp) or LUKP (hardwood unbleached pulp). Can be used in In particular, it is preferable that the pulp composition has a greater composition than that of the hardwood pulp. In particular, the ratio of softwood pulp: hardwood pulp should be 50: 50-80: 20. Since the softwood pulp has a longer fiber length than the hardwood pulp, in the pulp composition containing a large amount of softwood pulp, the liquid is likely to diffuse along the long pulp fiber of the softwood pulp, and the effects of the present invention are particularly easily manifested. . Moreover, since it becomes easy to express firm stiffness, it is suitable for the use aspect of the kitchen paper used for the use which wipes off and absorbs a liquid especially.

  The paper thickness of the kitchen paper 1 which concerns on this invention is not specifically limited. The laminated structure of the nested type enables the overall paper thickness to be made thinner than when crepe paper having the same depth L1 of the embossed recesses 22A and 22B (the height of the embossed protrusions) L1 is laminated in the tip-to-tip format. Is apparent from the viewpoint of the layer structure, and the effect of the present invention is thereby obtained. In addition, the specific reference value of paper thickness is 450-550 micrometers measured by the following measuring method. If it is in this paper thickness range, it is not excessively bulky when it is made into a roll shape or bundle shape which is a general product form of kitchen paper, and it is also used as an effect of the embossed configuration of the present invention, and further as kitchen paper. Thickness and strength at the time are fully expressed. The method for measuring the paper thickness is that after the specimen is fully conditioned under the conditions of JIS P 8111 (1998), a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) Use to measure. The paper thickness is measured without peeling off each ply. The specific measurement procedure is to confirm that there is no dust, dust, etc. between the plunger and the measurement table, lower the plunger on the measurement table, and move the dial thickness gauge memory to set the zero point. Align, then raise the plunger and place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the plane of the paper. The load when measuring the thickness is about 70 gf at 120 μm. The thickness is an average value obtained by performing measurement 10 times. As for the place where the paper thickness is measured, at least a part of one unit concave emboss is accommodated in the plunger terminal. However, this paper thickness measurement method is a reference value for the paper thickness as described above because a difference occurs in how the kitchen paper is crushed in the thickness direction during measurement depending on the embossing mode.

  On the other hand, the main product aspect of the kitchen paper 1 according to the present invention is a roll-shaped product in which a paper strip with a perforation line for separation is arranged at appropriate intervals, or a pickup type, a pop-up type, etc. Although what was called and the sheet paper kitchen paper folded and laminated | stacked can be illustrated, these product aspects are not limited.

On the other hand, in the kitchen paper 1 according to the present invention, the crepe papers 10A and 10B are embossed, but this emboss pattern is characteristic, and the crepe papers 10A and 10B are characteristic. The effects of the present invention are obtained in combination with the later-described lamination mode. As shown in FIG. 1, the emboss pattern according to the present invention has 20 to 80 unit concave embosses 22A (22B) having a bottom surface area of 1.5 to 3.0 mm ² and a center-to-center distance L2 of 5, as shown in FIG. A substantially rectangular embossed section 2 arranged in a range of 0 to 7.5 mm, and a line shape having a width L3 of 4.0 to 6.5 mm that is located between the embossed sections 2 and divides the embossed sections 2 And a non-embossed section 3.

  Examples of the shape of the bottom surface of the unit concave emboss 22A (22B) include an ellipse, a square rectangle, a circle, and a quadrangle (rectangle, square), which are preferable in the above order. When the unit concave emboss 22A (22B) has no corner, it is easier to feel softness when used as the kitchen paper 1. Moreover, the improvement effect of the liquid absorption performance made | formed with the said basic weight and the laminated structure mentioned later increases. This is because the liquid is more easily diffused along the fiber when the shape of the unit concave emboss 22A (22B) has no corners. That is, when the shape of the unit concave emboss 22A (22B) has a corner, the fiber at the corner is strongly bent, and the liquid may not easily diffuse along the fiber. This is because such a phenomenon is unlikely to occur in the case of no shape. Here, the shape of each of the plurality of unit concave embosses 22A (22B) is not necessarily the same. However, the same shape is preferable because there is no partial bias in the physical properties such as the effect of liquid absorption and the softness of paper. In the present invention, the depth L1 of the unit concave emboss 22A (22B) is not necessarily limited. What is necessary is just to design suitably in the range which can achieve said preferable paper thickness. A preferable range is 0.2 to 1.7 mm. If it is this range, the effect of this invention can fully be expressed.

  The center-to-center distance L2 according to the present invention is a distance between the centers of gravity of the bottom surfaces of the unit concave embosses adjacent to each other on the crepe paper surface. Even if the distance between adjacent unit concave embosses in the left-right and up-down diagonal directions is different, it is sufficient that they are within the range of the center-to-center distance of the present invention. The illustrated form is a particularly preferred form, in which unit concave embosses are arranged at equal intervals in the vertical direction and the horizontal direction of the crepe paper surface, and the center-to-center intervals in the vertical direction and the horizontal direction are the same. However, the center-to-center intervals of the unit concave embosses 22A (22B) applied to the crepe paper 10A (10B) do not have to all coincide. In the present invention, when there is a difference in the bottom surface shape and area of each unit concave emboss 22A (22B) existing in the crepe paper 10A (10B), the arrangement of the unit concave emboss 22A (22B) When there is some variation and the arrangement is not regular, the center-to-center distance L2 is not constant, but in this case as well, the center-to-center distance of each unit concave emboss 22A (22B) is 5.0 to 7.5 mm. It only has to be within the range. However, as described above, it is desirable that the unit concave embosses 22A (22B) are regularly arranged at equal intervals in the vertical and horizontal directions of the crepe paper surface. Furthermore, the most preferable arrangement of the unit concave embosses 22A (22B) applied to the crepe paper 10A (10B) according to the present invention is the same in the area and shape of the bottom surface of each unit concave emboss 22A (22B). The unit concave emboss 22A (22B) is a pattern in which the unit concave embosses 22A (22B) are regularly arranged at equal intervals in the left, right, up and down directions of the crepe paper surface. Such an embossed pattern does not cause partial bias in the paper surface in the liquid-absorbing effect and physical properties of the present invention. In addition, since the bottom shape of the unit concave emboss 22A (22B) provided to the crepe paper 10A (10B) is not necessarily a clear shape in many cases, the area of the bottom surface and the distance between the centers are calculated. May be measured by extracting from 3 to 18 units from the existing portion of the unit concave emboss having a clear outer edge of the bottom surface.

  On the other hand, in the embossed section 2 in the embossed pattern of the crepe paper 10A, 10B according to the present invention, the number of unit concave embosses is 20-80. More preferably, in combination with the bottom surface area and the center-to-center spacing of the unit concave embosses, which are 40 to 70, and the laminated structure described later, the number is excessive due to the presence of the unit concave embosses in the embossed section 2. Hardening of the paper surface is prevented, and the presence of a non-embossed section around it ensures that the kitchen paper as a whole is not hard and has the flexibility that is unique to the nested type, and the oil absorption is also improved in relation to other configurations. To do. Note that one embossed section 2 preferably has a substantially rectangular shape that is regularly arranged at regular intervals in the upper, lower, left, and right directions of the crepe paper surface.

  Thus, in the kitchen paper 1 which concerns on this invention, while the space | interval of the unit concave embossing 22A and 22B of crepe paper 10A (10B) is sparse by a comparatively wide space | interval, the number in the embossing section 2 is also small, Combined with the above-mentioned nested type laminated structure of the embodiment described later, the liquid diffusibility is excellent, and the space between the crepe papers 10A and 10B formed by the laminated structure is wide, and the effect of improving the liquid absorption performance, especially the oil absorption amount, is achieved. It is easy to express and is also flexible.

In addition, the magnitude | size of the common kitchen paper 1 is 200-800 cm < ² >. When the number of unit concave embosses in one embossed section 2 is greater than that of the present invention and the total area of unit concave embosses is excessively wide, the present invention can be used in the actual use of kitchen paper when used as general kitchen paper. The embossed section 2 and the non-embossed section 3 according to the above cannot sufficiently exist, and the effect cannot be obtained. The total sum of the area of the unit concave emboss in one emboss section 2 is 30 to 240 mm ² , more preferably 60 to 210 mm ² . Of course, if there are two or more embossed sections 2 and a non-embossed section 3 exists between them, the effect of the present invention is achieved. It should be noted that the substantially rectangular shape only requires that one embossed section 2 that is an aggregate of unit concave embossed portions 22A (22B) as a whole forms a shape that can be recognized as a quadrangle, preferably a square or a rectangle. In the present invention, the kitchen paper may have a substantially trapezoidal or substantially triangular unit concave embossed portion formed by a part of the embossed section at its end.

  The non-embossed section 3 is a portion where the unit concave emboss 22A (22B) does not exist, and is arranged in a line so as to divide the plurality of substantially rectangular embossed sections 2. The width is a width L3 of 4.0 to 6.5 mm as described above. That is, the embossed pattern arranged on the crepe paper 10A, 10B according to the present invention is a unit recessed emboss 22A (22B) extending in a line between the embossed sections 2 which are aggregates of the unit recessed emboss 22A (22B). Non-embossed section 3 without) is arranged. The width L3 of the non-embossed section 3 is not the center-to-center distance of the unit concave emboss 22A (22B) located at the edge of the adjacent embossed section 2, but is a separation distance. As described above, when the arrangement of the unit concave embosses 22A (22B) constituting the embossed section 2 is not regular, or when the shape and area of all the unit concave embosses 22A (22B) are not the same, the non-embossed section 3 depends on the position. In some cases, the width L3 may be in the range of 4.0 to 6.5 mm. By forming the non-embossed section 3 having the width L3, in particular, the liquid in contact with the non-embossed section 3 acts so as to be drawn into the embossed section 2 with diffusion. And a high oil absorption and liquid retention are ensured combined with the laminated structure in the embossed section 2 described above. In particular, the width of the non-embossed section 3 is in the above range, and by adopting a laminated structure described later, the collapse of the void structure in the non-embossed section 3 at the time of liquid absorption, particularly during oil absorption is minimized, and high liquid diffusibility. The drawing of the liquid into the embossed section 2 acts to increase the oil absorption speed and the amount of oil absorption.

  Here, in the embossing pattern of the crepe paper 10A (10B) according to the present invention, the most preferable arrangement of the embossed section 2 and the non-embossed section 3 is as shown in FIG. It is a pattern in which the embossed section 2 exists between the non-embossed sections 3. The extending direction D1 of the non-embossed section 3 preferably has an inclination of 30 to 60 ° (６０A in the figure) with respect to the MD direction of the crepe paper 10A (10B), more preferably 43 to 47. It is desirable that the direction has an inclination of °. By adopting the extending direction D1 of the non-embossed section 3 as described above, the liquid diffusibility directionality is more uniform due to the relationship with the crepe extending direction (claw extending direction) of the crepe paper 10A, 10B, and water absorption In addition, the effect of the present invention relating to the oil absorbability is exhibited more highly. Further, the difference in rigidity between the vertical and horizontal directions of the crepe paper can be felt small due to the presence of the non-embossed section, and it becomes easy to feel the flexibility.

  On the other hand, in the embossed pattern in the crepe paper 10A, 10B according to the present invention, the embossed area ratio is 4 to 10%. The emboss area ratio is a ratio of the total area of the unit concave emboss 22A (22B) to the surface area of one crepe paper 10A (10B). In other words, it is the ratio of the sum of the areas of the unit concave embosses 22A (22B) on one surface of the entire surface of one surface of the kitchen paper 1 at the time of product. The embossed area ratio is slightly lower than that of the conventional nested kitchen paper 1. With such a low embossed area ratio, the amount of oil absorption increases and becomes excellent.

  On the other hand, in the kitchen paper 1 according to the present invention, each crepe paper 10A (10B) having the above embossed pattern has one surface in the extending direction D1 of the non-embossed section 3 in a plan view, as shown in FIG. The crepe paper has a concave emboss arrangement Y in which unit concave embosses 22A and unit concave embosses 22B on the other side are alternately arranged. Further, in a plan view, the crepe paper 10A (10B) on one side is laminated in a nested manner so that the distance L4 between the embossed section 2 of the crepe paper 10A (10B) and the embossed section 2 of the other side crepe paper is 2.0 to 6.5 mm. Yes. Here, the distance L4 between the embossed section 2 of the crepe paper 10A (10B) on one side and the embossed section 2 of the crepe paper on the other side is the overlapping portion of the non-embossed sections in each crepe paper 10A (10B). Width. As shown in FIG. 2, when there are two overlapping portions L4 between the non-embossed sections, any one of them may be 2.0 to 6.5 mm.

  Moreover, in the kitchen paper 1 according to the present invention, the unit convex embosses of the crepe papers 10A and 10B are not in contact with each other. That is, in the layer structure, there is always a gap around the embossed recess 22A (22B) of one crepe paper 10A (10B). And the embossed pattern of the above crepe paper 10A, 10B, in particular, the liquid diffusibility on the paper surface due to the spacing between the centers of the unit concave embosses 22A, 22A (22B, 22B) having a wide paper surface and the non-embossed section 3; , The action of drawing liquid from the non-embossed section 3 to the embossed section 2, and the concave embossed arrangement in which the unit concave embossed 22A, 22B of each crepe paper 10A, 10B existing in the extending direction of the non-embossed section 3 by the laminated structure are alternately present By maintaining the void portion due to the presence of Y (preventing crushing), a high oil absorption speed and a high oil absorption amount are ensured. In addition, in addition to the maintainability of the wide gaps between the crepe papers and the gaps described above, the crepe papers 10A and 10B have, in particular, a nested structure having a wide center-to-center spacing of the unit concave embosses 22A (22B). The distance between the non-embossed sections 3 is somewhat narrow, ie, 2.0 to 6.5 mm, and the non-embossed section 3 is held between both crepe papers, in combination with the effect that the non-embossed sections 3 are not easily crushed during liquid absorption. The amount of liquid absorption is increased. Combined with the basis weight of the crepe paper according to the present invention, the embossed pattern, and the specific laminated structure of the crepe paper of the embossed pattern, the kitchen paper according to the present invention is liquid-absorbing, especially the oil absorption In particular, it has a high oil absorption that is not inferior to the laminated structure of tip-to-tip.

  Note that the kitchen paper 1 according to the present invention has a structure in which two crepe papers 10A and 10B are laminated in a nested manner, but the crepe papers 10A and 10B can be bonded by an adhesive paste 40. As the adhesive paste 40, a known adhesive employed for kitchen paper having a laminated structure can be used. Examples thereof include cellulose-based adhesives such as polyvinyl alcohol, starch, modified starch, and carboxymethylcellulose. The kitchen paper 1 of the present embodiment has a particularly preferable aspect in which one crepe paper 10A (10B) is applied by the adhesive paste 40 applied to the top of the embossed convex portion 21A (21B) of one crepe paper 10A (10B). And the other crepe paper 10B (10A). As described above, in the bonding mode in which the two crepe papers 10A and 10B are bonded to each other by the adhesive paste 40 applied to the embossed convex portion 21A (21B) of one crepe paper 10A (10B), the liquid absorption performance by the adhesive is used. In addition, the gap between the two crepe papers in the laminated structure of each crepe paper, in particular, the nested type laminated structure is easily maintained, and the liquid retention is effectively exhibited. However, in the present invention, the adhesive 40 may be applied to the embossed convex portions 21A and 21B of both the crepe papers 10A and 10B.

  On the other hand, the kitchen paper 1 which concerns on this invention can be manufactured by the embossing to crepe paper by the well-known steel rubber type embossing method, and also the bonding method.

  Hereinafter, the kitchen paper which concerns on this invention is demonstrated further, referring the Example verified about the effect of this invention.

“Comparison test with tip-to-tip type laminated structure”
Nested type kitchen paper having embossing according to the present invention (Examples 1 and 2) and tip-to-tip type kitchen paper having an embossed pattern and a laminated structure of a commercially available kitchen paper, tensile strength, elongation In addition to measuring physical properties of softness, water absorption, oil absorption, water absorption speed, and oil absorption speed were measured and evaluated as liquid absorption performance.

  The sample according to each example corresponds to the front and back by using an acrylic plate formed with a convex emboss pattern corresponding to the emboss pattern of the crepe paper on the front and back, and embossing the emboss pattern of this acrylic plate on the crepe paper, respectively. Each crepe paper having an embossed pattern was prepared, and each crepe paper to which each embossed pattern on the front and back sides was applied was laminated while being aligned. Samples according to each example were prepared with a size of 120 mm square, and at the time of measurement, a central portion of 100 mm square was cut into a test piece. About the thing which has an embossed section and a non-embossed section, the intersection position of the non-embossed section was made into the center position at the time of cutting.

  In this comparative test, the crepe paper base paper composing the kitchen paper according to each example and the adhesive paste for bonding the crepe paper to each other are the same in order to compare the embossed pattern and the laminated structure. It was used. The fiber raw material of the base paper is 100% by mass of pulp. Also, each kitchen paper in this comparative test has adhesive glue applied only to the top of all the convex embosses formed on one crepe paper, and the two pieces of kitchen paper are bonded together by this adhesive paste application part. It has a structure. Further, the emboss depth was 1.0 mm.

  In addition, Example 2 is an emboss pattern shown in FIGS. 1-4, and Example 1 makes each numerical value different within the range of this invention by the same emboss pattern. Since Example 2 (Example 1) is a nested type, when viewed from one side, the concave embossing on the other side is not visually recognized, but is visually recognized as shown in FIG. Further, the emboss pattern of Comparative Example 1 is as shown in FIG. 5 and has a tip-to-tip type laminated structure having an embossed section 102 and a non-embossed section 103 (in the figure, the unit recessed emboss is indicated by a symbol). This is the same in FIG.6, and the kitchen paper according to the comparative example in the figure is the same in FIGS.

  The embossed pattern of Comparative Example 2 is as shown in FIG. 6 and has a tip-to-tip type laminated structure having no non-embossed section. In Comparative Example 1 and Comparative Example 2, the same emboss pattern is visually recognized from one side and the other side. Therefore, the embossed pattern shown in FIG. 5 or FIG.

  In addition, the measuring method of water absorption amount, oil absorption amount, water absorption rate, oil absorption rate, and softness is as follows.

[Water absorption]
The water absorption was measured as shown in (1) to (5) below.
(1) After curing the test piece in a dryer at 105 ° C. for 3 minutes, the mass of the test piece is measured with an electronic balance (A & D HR300, etc.).
(2) Water at 25 ° C. is placed in a tray (for example, inner dimension: 215 mm × 160 mm) larger than the test piece so as to have a depth of about 20 mm.
(3) Spread the test piece on a rigid net (for example, 120 mm x 120 mm, mesh 15 mm) larger than the test piece, put it in the tray containing the water, and contact the water surface Immerse the test piece in the same manner.
(4) When the water has sufficiently infiltrated the surface of the test piece, raise the flat net directly above the surface of the water, pick up the corner of the test piece with tweezers, fold it into four (cross eight-fold), and leave it for 30 seconds. To do.
(5) The mass of the test piece absorbed after 30 seconds is measured with an electronic balance, and the amount of water absorption per 1 m ² is calculated by the following formula.
Water absorption amount (g / m ² ) = ((mass of water-absorbed test piece measured in (4) above) − (mass of test piece after 3 minutes curing measured in (1) above)) × 100 (Note : 100 times of 100cm ² per specimen

[Oil absorption]
The oil absorption was measured as shown in (1) to (5) below.
(1) After curing the test piece in a dryer at 105 ° C. for 3 minutes, the mass of the test piece is measured with an electronic balance (A & D HR300, etc.).
(2) 25 ° C. salad oil (Nisshin Salad Oil: manufactured by Nisshin Oillio Group Co., Ltd.) is put in a tray (for example, inner dimension: 215 mm × 160 mm) larger than the test piece so as to have a depth of about 20 mm.
(3) Spread the test piece on a rigid flat net (for example, 120 mm x 120 mm, mesh 30 mm) larger than the test piece, put it in a tray containing the salad oil, and place it on the oil surface. The specimen is soaked in contact.
(4) When the salad oil is sufficiently infiltrated to the surface of the test piece, the flat net is raised directly above the oil surface and left to stand for 26 to 27 seconds, then the corner of the test piece is picked with tweezers and weighed in advance. Transfer the specimen to the measuring container. At this time, the flat net is lifted from the oil level, and it does not exceed 30 seconds from the start of rest until it is transferred to the measuring container.
(5) The mass of the measurement container containing the test piece is measured with an electronic balance, and the mass of the measurement container is subtracted from the measured value to calculate the mass of the test piece after oil absorption. Then, the amount of oil absorption per 1 m ² is calculated by the following formula.
Oil absorption (g / m ² ) = ((mass of test piece absorbed in (4) above) − (mass of test piece after 3 minutes curing measured in (1) above)) × 100 (Note : 100 times of 100cm ² per specimen

[Water absorption speed]
The water absorption rate was measured as follows (1) to (4).
(1) Curing the test piece in a dryer at 105 ° C. for 3 minutes.
(2) The cured test piece is placed on a table (for example, a tripod for an alcohol lamp) having a hole with a diameter of 40 mm or more in the center, and the center of the test piece is positioned above the hole. Place.
(3) To the center of the test piece, 300 μl of water at 25 ° C. is dropped with a micropipette from a height of 10 mm from the surface of the test piece. This dripping can be performed as the scale 300 using, for example, the ASONE pipette guy PG-1000.
(4) The time from the moment when the water from the micropipette comes into contact with the test piece to the time when the water of the test piece completely permeates is measured with a stopwatch, and the time is taken as the water absorption rate (sec). In addition, the completion | finish of infiltration is by confirming visually that the glossy reflection of water disappears from the test piece surface.

[Oil absorption speed]
The oil absorption rate was measured as shown in (1) to (4) below.
(1) Curing the test piece in a dryer at 105 ° C. for 3 minutes.
(2) The cured test piece is placed on a table (for example, a tripod for an alcohol lamp) having a hole with a diameter of 40 mm or more in the center, and the center of the test piece is positioned above the hole. Place.
(3) From a height of 10 mm from the surface of the test piece, 300 μl of 25 ° C. salad oil (Nisshin Salad Oil: manufactured by Nisshin Oillio Group Co., Ltd.) is dropped into the center of the test piece with a micropipette. This dripping can be performed as the scale 300 using, for example, the ASONE pipette guy PG-1000.
(4) The time from the moment when the salad oil from the micropipette comes into contact with the test piece until the salad oil completely penetrates into the test piece is measured with a stopwatch, and that time is taken as the oil absorption rate (sec). In addition, completion | finish of penetration is by confirming visually that the gloss reflection of salad oil disappears from the test piece surface.

[Softness]
The test piece was measured according to the JIS L 1096E method according to the handle ohmmeter method, and the test piece was cut as described above, and the 100 mm × 100 mm test piece was used as it was, and the slit width of the handle ohmmeter was 15 mm. The test piece was measured three times in the vertical direction and the horizontal direction, and the value calculated by the following equation was defined as softness. Softness (cN) = √ ((average value in vertical direction) × (average value in horizontal direction))

  The results of the above test are shown in Table 1 together with the composition, emboss pattern and physical properties of the crepe paper of each example. The measurement of the paper thickness is a value measured by the above dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho). It is a reference value. Since each example uses the same base paper and has the same emboss depth (1.0 mm), the thickness (bulk) is actually substantially the same as in Example 1 and Example 2 in the laminated structure. Comparative Example 1 and Comparative Example 2 are approximately twice as large as Example 1 and Example 2.

  Example 1 and Example 2 of the present invention were superior to Comparative Example 1 and Comparative Example 2 having a tip-to-tip type laminated structure in the amount of oil absorption while maintaining the oil absorption rate that is an advantage of the nested type. . The water absorption rate was equivalent or better.

  As for softness, the result was very good due to the fact that the unit concave embossing was sparse and the hardening by embossing and the hardening by adhesive glue were reduced.

  The water absorption amount was slightly inferior to that of Comparative Example 2. However, the water absorption amount largely depends on the configuration of the crepe paper, and is sufficiently improved if a crepe paper having a slightly higher basis weight than Comparative Example 2 is used. it can. Even in that case, the paper thickness can sufficiently exhibit the advantages of the nested format.

  This test is a test in which the base paper and the emboss depth are compared with each other, and the difference in the results can be confirmed only by the difference between the emboss pattern and the laminated structure. According to the results, the embossed pattern and the laminated structure according to the present invention can achieve a higher oil absorption than the tip-to-tip type while being a nested type.

"Comparative test between nested stacked structures"
Furthermore, a nested type kitchen paper (Example 1 and Example 2) having an embossing according to the present invention and a nested type kitchen paper having an embossing different from the present invention (including a conventional embossed pattern) ( About Comparative Examples 3-8, while measuring the physical property of tensile strength, elongation, and softness, water absorption amount, oil absorption amount, water absorption rate, and oil absorption rate were measured and evaluated as liquid absorption performance.

  As in the “Comparison test with the tip-to-tip type laminated structure”, the sample according to each example uses an acrylic plate on which convex embossed patterns corresponding to the embossed patterns on the front and back sides are formed, and the embossed pattern of this acrylic plate is creped. Each crepe paper having an embossed pattern corresponding to the front and back was prepared by embossing the paper, and each crepe paper provided with the embossed pattern on the front and back was laminated while being aligned. Samples according to each example were prepared with a size of 120 mm square, and at the time of measurement, a central portion of 100 mm square was cut into a test piece. About what has an embossed section, the crossing position of the non-embossed section was made into the center position at the time of cutting.

  In this comparative test, the same kind of adhesive paste for bonding the crepe paper to the base paper of the crepe paper that constitutes the kitchen paper according to each example, in order to make a comparison by the embossed pattern and the laminated structure. I used something. Also, each kitchen paper in this comparative test has adhesive glue applied only to the top of all the convex embosses formed on one crepe paper, and the two pieces of kitchen paper are bonded together by this adhesive paste application part. It has a structure. Also, the embossing depth was all 1.0 mm.

  The emboss pattern of Example 1 and Example 2 is the same as Example 1 and Example 2 in the above-mentioned “Comparative test with the tip-to-tip type laminated structure”. Further, except for Comparative Example 4, Comparative Examples 3 and 5 to 7 have an embossed section and a non-embossed section, and the arrangement mode of the non-embossed section is a lattice shape as in Examples 1 and 2. Yes. That is, these comparative examples have non-embossed sections arranged in a lattice shape and substantially rectangular embossed sections surrounded by the non-embossed sections, as in the first and second embodiments.

  However, the shape of the unit concave emboss of Comparative Example 3 is the same ellipse as that of Example 1 and Example 2, but the bottom surface area of the unit concave emboss is small and the distance between the centers is narrow. That is, it is an emboss pattern in which unit concave embosses having a smaller bottom surface area are densely arranged in the emboss section than in the first and second embodiments.

  Further, the embossed pattern of Comparative Example 4 has the same shape and bottom surface area of the unit concave emboss as in Example 2, but there is no non-embossed section, and the center-to-center spacing of the unit concave emboss is about the same as in Example 2. The pattern is ½.

  The emboss pattern of Comparative Example 5 is the same as that of Example 2, but as shown in FIG. 7, in the laminated structure, the unit concave emboss 122A of one crepe paper and the unit concave emboss 122B of the other crepe paper are in contact with each other. Are laminated (laminated so that the convex embosses are in contact with each other).

  The embossed pattern of Comparative Example 6 is a pattern in which unit concave embosses are arranged in a rectangular shape, and unit concave embosses are densely arranged with a narrow center-to-center spacing.

  In the emboss pattern of Comparative Example 7, the shape of the unit concave emboss of Comparative Example 6 is a circle.

  The embossed pattern of Comparative Example 8 is the pattern shown in FIG. 8, which has a non-embossed section and has a leaf-like embossed pattern in which unit concave embosses are arranged in an arc line shape.

  The test procedures and measurement methods for water absorption, oil absorption, water absorption speed, oil absorption speed, and softness performed in each example are the same as in the above “comparison test with a tip-to-tip type laminated structure”.

  The results of the tests conducted under the above conditions are shown in Table 2 below together with the composition, embossed pattern and physical properties of the crepe paper of each example. The measurement of the paper thickness is a value measured by the above dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho). It is a reference value.

  The amount of oil absorption is high in Examples 1 and 2 of the present invention, Comparative Example 5 and Comparative Example 8, and these are comparative examples 1 and 2 of the above “tip to tip type laminated structure”. It is equal to or higher than Comparative Example 2. However, Comparative Example 5 and Comparative Example 8 are also lower than Examples 1 and 2, and Comparative Example 5 and Comparative Example 8 together with Comparative Example 3 have a very slow oil absorption rate of 20 seconds or more. The benefits of nested formats are no longer available.

  Moreover, also in the comparative test between nested types, Example 1 and Example 2 of the present invention had a small softness value, and were excellent in softness and flexibility. Although the comparative example 5 became a value smaller than this invention in softness, as above-mentioned, the oil absorption speed | rate has become very slow with 20 second.

  Comparing each example, only Example 1 and Example 2 of the present invention have obtained remarkably good results with respect to oil absorption, oil absorption rate and softness.

  Based on the results of the above “comparison test with the tip-to-tip type laminated structure” and “comparison test between the nested type laminated structures”, the embossed pattern and the laminated structure of the present invention enable the paper thickness to be reduced. While maintaining the advantages of the nested type, which can be made thinner and faster in oil absorption, it can achieve oil absorption more than “tip-to-tip type laminated structure”, and it also has excellent softness and flexibility.

DESCRIPTION OF SYMBOLS 1,101 ... Kitchen paper, 10A, 10B ... Crepe paper, 10x ... Embossing convex part formation surface, 21A, 21B ... Embossing convex part, 22A, 22B ... Embossing concave part (unit concave embossing), 23B ... Non-embossing convex part, L1 Depth of embossed concave part, L2: Center-to-center distance of unit concave embossed part, 2 ... Embossed section, 3 ... Non-embossed section, L3 ... Width of non-embossed section, D1 ... Extension direction of non-embossed section, ∠A ... Crepe Angle between the MD direction of the paper and the extending direction of the non-embossed sections, L4: the distance between the front and back embossed sections 2, 40: adhesive glue, Y: concave embossed array Y

Claims (4)

Two crepe papers to which embossing is applied are kitchen papers in which embossed convex part formation surfaces are faced to form a nested laminated structure, and concave and embossed parts corresponding to the embossed convex parts are present on the front and back sides. And
The basis weight per sheet of the crepe paper is 15 to 35 g / m ² ,
The embossed pattern given to each crepe paper has a substantially rectangular shape in which 20 to 80 unit concave embosses having a bottom surface area of 1.5 to 3.0 mm ² are arranged with a center-to-center spacing of 5.0 to 7.5 mm. The embossed section has an embossed section and a non-embossed section having a line shape of 4.0 to 6.5 mm positioned between the embossed sections and separating the embossed sections, and the embossed area ratio is 4 to 10%. And
Embossed convex portions of each crepe paper are stacked without contact, and unit concave embosses on one side of the crepe paper and unit concave embosses on the other side are alternately arranged in the extending direction of the non-embossed section in a plan view. Having a concave embossed arrangement, and the distance between the embossed section of the crepe paper on one side and the embossed section of the crepe paper on the other side in a plan view is 2.0 to 6.5 mm,
Kitchen paper characterized by that.   In a plan view, the crepe paper on one side and the crepe paper on the other side are in the direction of extension of the non-embossed section. The kitchen paper of claim 1, having a concave embossing arrangement in which the embossing is located.   The kitchen paper of Claim 1 or 2 which has 400-500 unit concave embossing per 120 mm square.   The kitchen paper according to any one of claims 1 to 3, wherein an adhesive paste is applied only to a top portion of an embossed convex portion of one crepe paper, and both crepe papers are bonded through the adhesive paste. .

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