JP2016171831A - Paper roll having embossment attached thereto, and production method of roll product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a paper roll that each wound diameter of paper rolls is uniform as a whole, which are each obtained by winding a sanitary tissue paper on which a plurality of kinds of embossed patterns are formed.SOLUTION: In a paper roll obtained by winding in a length direction, a tissue paper having prescribed length and width, the tissue paper has embossed regions 1a, 1b, etc., on n(n≥2) spots to which each embossment having each different pattern is attached. In this case, the embossed regions 1a, 1b, etc., on n spots are formed so that a difference between each embossed area rate is 1% or lower.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a paper roll such as a toilet roll and a log as a production intermediate thereof. Moreover, this invention relates to the manufacturing method of roll products, such as a toilet roll. More specifically, the present invention relates to a paper roll or the like provided with embosses of different patterns.

  Conventionally, paper rolls have been manufactured in which sanitary thin paper such as toilet paper or kitchen paper is wound into a roll. The paper roll is formed in a substantially cylindrical shape having a center hole by winding a long thin paper sheet in multiple layers in the length direction. Also known are paper rolls in which sanitary thin paper is provided with a predetermined pattern of embossing in accordance with the application (Patent Document 1, Patent Document 2, etc.). Thus, by giving embossing to sanitary thin paper, the thin paper can be made bulky and its absorbency and touch can be improved. For this reason, the sanitary thin paper to which embossing was given can be used conveniently as toilet paper or kitchen paper, for example.

JP 2005-40620 A JP 200621020 A

  By the way, when embossing is given to the sanitary thin paper constituting the paper roll, it is common to use only one type of embossing pattern in order to prevent deterioration of productivity. That is, when embossing of a plurality of different types of patterns is applied to the sanitary thin paper, the bulk (volume) of the sanitary thin paper partially increases or decreases due to the difference in the embossed area ratio of each pattern. And when the sanitary thin paper which has a site | part from which bulk differs in this way was wound in roll shape, there existed a problem that the winding diameter of the obtained paper roll will change with sites. For example, it is assumed that the sanitary thin paper is divided into two in the width direction, the first emboss pattern is given to the left half, and the second emboss pattern is given to the right half. In this case, if the embossed area ratios of the first embossed pattern and the second embossed pattern are greatly different, the paper roll obtained by winding the sanitary thin paper is wound on the left half and the right half in the width direction. There was a problem that a large difference in the diameter was born and the entire shape was distorted. Thus, when distortion occurs in the shape of individual paper rolls, the distortion must be taken into account when producing and transporting a large number of paper rolls or packing a plurality of paper rolls into a packaging bag. There was a risk of deteriorating. For this reason, at present, only one type of emboss pattern is generally applied to sanitary thin paper constituting the paper roll.

  On the other hand, embossing can express geometrical figures, animal and plant patterns, etc. on the surface of sanitary thin paper, and can therefore give a design aesthetic to the paper roll. For this reason, when producing paper rolls, there are many requests to give embossed sputters representing various types of designs to sanitary thin paper. If paper rolls can be produced by applying various variations of embossing patterns to one sanitary thin paper, the product value of toilet rolls and kitchen rolls can be further increased.

  Accordingly, an object of the present invention is to provide a technique capable of aligning the winding diameter of a paper roll even when a plurality of types of emboss patterns are provided on sanitary thin paper.

  As a result of earnest research, the inventor of the present invention divides and gives embosses of different patterns to almost all areas of the thin paper and makes the embossed area ratio of each emboss pattern approximately equal, thereby reducing the roll diameter of the paper roll. The knowledge that it can arrange is obtained. The inventor has conceived that the problems of the prior art can be solved based on the above knowledge, and has completed the present invention. If it demonstrates concretely, this invention has the following structures and processes.

The first aspect of the present invention relates to a paper roll.
In the paper roll of the present invention, a thin paper having a predetermined length and width is wound in the length direction. The thin paper has a plurality of embossed areas 1a, 1b,... Each provided with an emboss having a different pattern. The number of the embossed areas 1a, 1b... Is represented by n (n ≧ 2).
Here, the n embossed areas 1a, 1b,... Each have a difference in embossed area ratio within 1%. For example, when the embossed area ratio of the first embossed region 1a is α% and the embossed area rate of the second embossed region 1b is β%, the difference between α and β is within 1%.

  Like the said structure, the aesthetics of a paper roll and a thin paper can be improved by dividing and forming the embossed area | region 1a, 1b ... with which the emboss of a different pattern was provided with respect to the paper roll in several places. . Moreover, the bulkiness of the whole thin paper sheet can be made uniform by keeping the difference in the embossed area ratio of the plurality of embossed regions 1a, 1b... Within 1%. As a result, distortion can be prevented from occurring in the paper roll obtained by winding thin paper in multiple layers, and the productivity can be maintained.

  As described above, the first aspect of the present invention relates to a paper roll. The “paper roll” here includes a wide range of thin paper sheets having a predetermined length and width wound in the length direction. For example, “paper roll” includes roll products that are final products such as toilet rolls and kitchen rolls, and production intermediates called logs obtained in the production process of the roll products.

  In the paper roll of the present invention, it is preferable that the thin paper does not have a region where no embossing is provided over 5 cm squares between the embosses except for the end portions in the length direction and the width direction.

  As described above, it is preferable that at least one emboss is formed in a 5 cm square on the surface of the thin paper. That is, it is preferable that an emboss is formed on the surface of the thin paper over substantially the entire area. If there is a region where the emboss is not formed over 5 cm square, the volume in the region is partially reduced, which causes distortion in the paper roll. Therefore, in a preferred embodiment of the present invention, there is no region where no emboss is formed over 5 cm square. In addition, since the end portions of the thin paper in the length direction and the width direction may become a clearance discarded in the manufacturing process, it is not necessary to give emboss to this portion.

  In the paper roll of the present invention, it is preferable that the thin paper does not have a region where no embossing is provided in the length direction and the width direction.

  As described above, when a virtual straight line is drawn on the surface of the thin paper in the length direction and the width direction, at least one emboss is positioned on the straight line. Thereby, since embossing is formed over the entire surface of the thin paper, it is possible to prevent the paper roll from being distorted.

  In the paper roll of the present invention, the embossed areas 1a, 1b,... Each have an embossed area ratio of 7% to 10%, and the difference in the embossed area ratio is preferably within 1%.

  By setting the embossed area ratio of the embossed regions 1a and 1b to 7% to 10% as in the above configuration, a relatively fine embossed pattern is provided on the surface of the thin paper. Thus, by forming the embosses densely to some extent, the aesthetics of the thin paper can be improved, the balance of the irregularities formed on the surface of the thin paper can be improved, and the bulkiness can be made uniform.

The paper roll of the present invention is preferably the log 10 obtained in the manufacturing process of the roll product 20. The log 10 is a production intermediate in which a plurality of roll products 20a, 20b,... Are obtained by dividing the thin paper in the width direction. That is, the log 10 can be rephrased as having a plurality of roll products 20 connected in the width direction. The number of roll products 20a, 20b... Obtained from one log 10 is represented by m (m ≧ 2).
In this case, the n embossed areas 1a, 1b,... Are preferably divided in the width direction of the thin paper.

  As described above, it is preferable to form a plurality of embossed areas 1a, 1b,... On the surface of the thin paper constituting the log 10 so as to be divided in the width direction. That is, when the thin paper is viewed in the width direction, a plurality of embossed areas 1a, 1b,... Are formed adjacent to each other. On the other hand, each embossed region 1a, 1b... Extends along the length direction of the thin paper and continues from one end to the other end in the length direction. As described above, in the state of the log 10, the embossed areas 1a, 1b,. Thereby, when the log 10 is divided into individual roll products 20a, 20b,..., The emboss patterns of the roll products 20a, 20b,. Therefore, a plurality of roll products 20a, 20b... Having different emboss patterns can be efficiently manufactured.

  In the paper roll of the present invention, when the width of one roll product 20 obtained from the log 10 is 144 ± 2 mm, the number m of roll products 20 obtained from the log 10 and the number n of the embossed regions 1a, 1b. Are preferably equal. The roll product 20 having a width of 44 ± 2 mm conforms to the toilet roll standard.

  For example, when seven roll products 20 are obtained from one log 10 as in the above-described configuration, seven emboss patterns are given to the thin paper constituting the log 10 in the width direction. . Thereby, it is possible to vary the emboss pattern of each roll product 20 obtained from one log 10.

  The paper roll may be the roll product 20. In this case, the n embossed regions 1a, 1b,... Are preferably divided in the length direction of the thin paper. The n embossed areas 1a, 1b,... Are periodically and repeatedly formed in the length direction of the thin paper.

  As described above, the embossed areas 1a, 1b,... Having different embossed patterns can be formed by being divided in the longitudinal direction of the thin paper. Accordingly, it is possible to provide the roll product 20 in which the emboss pattern changes when the thin paper is pulled out.

The second aspect of the present invention relates to a method for manufacturing the roll product 20.
First, all areas of thin paper having a predetermined length and width are divided in the width direction of the thin paper to give embosses of different patterns, and n (n ≧ 2) places to which embosses of different patterns are given respectively. Are formed (first step). Next, a log 10 is formed by winding thin paper in the longitudinal direction (second step). Further, the log 10 is divided in the width direction of the thin paper to form m (m ≧ 2) roll products 20a, 20b... (Third process).
In the first step, the n embossed regions 1a, 1b,... Have a difference in embossed area ratio within 1%.
Moreover, it is preferable that the number m of roll products 20 obtained from the log 10 is equal to the number n of the embossed areas 1a, 1b.

  By manufacturing the roll product 20 in accordance with the above-described steps, it is possible to manufacture a plurality of roll products 20a, 20b,. In addition, even though a plurality of types of emboss patterns are provided, the winding diameter of the log 10 can be aligned over almost the entire region. For this reason, the productivity of the roll product 20 can be increased.

  According to the present invention, it is possible to obtain a highly aesthetic paper roll in which a plurality of types of emboss patterns are provided on thin paper. Furthermore, since the roll diameter of the paper roll of the present invention is uniform as a whole, it can be efficiently manufactured.

FIG. 1 is a flowchart conceptually showing a manufacturing process of a roll product. FIG. 2 shows a first embodiment of a paper roll according to the present invention. FIG. 2 is a schematic diagram showing the structure of a log as a production intermediate. FIG. 3 shows an example of the emboss pattern given to the thin paper constituting the log in the first embodiment. FIG. 4 shows a second embodiment of the paper roll according to the present invention. FIG. 4 is a schematic diagram showing the structure of a roll product as a final product. FIG. 5 shows an example of an emboss pattern applied to the thin paper constituting the roll product in the second embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. This invention is not limited to the form demonstrated below, The thing suitably changed in the range obvious to those skilled in the art from the following forms is also included.
In this specification, “A to B” means “A to B”.
2 to 5 show an orthogonal coordinate system of the X axis and the Y axis for convenience. The X axis corresponds to the width direction of the thin paper, and the Y axis corresponds to the length direction of the thin paper.

[1. Roll product manufacturing process]
FIG. 1 shows a production flow of roll products.
As shown in FIG. 1, first, a long and thin thin paper 32 (base paper) is fed out from a raw roll 31. The thin paper 32 may be a single sheet (one ply), or may be a laminate of two or more sheets (two plies or more). Although the raw material of the thin paper 32 is not particularly limited, a known material used as a raw material of sanitary thin paper such as toilet paper or kitchen paper may be used. For example, waste paper pulp, virgin pulp, or a blend of these can be used as a raw material for thin paper. Examples of the virgin pulp include wood pulp, non-wood pulp, and synthetic pulp.

  Thereafter, embossing of a predetermined pattern is given to the thin paper 32 fed out from the original roll 31. What is necessary is just to provide embossing using the well-known embossing roll 41 and the anvil roll 42. FIG. The embossing roll 41 is arranged on one side of the thin paper 32, and the anvil roll 42 is arranged on the other side of the thin paper 32. On the peripheral surface of the embossing roll 41, a large number of protrusions having a shape corresponding to a predetermined embossing pattern are formed. On the other hand, the peripheral surface of the anvil roll 42 is a flat surface made of metal or rubber. For this reason, by introducing the thin paper 32 in a pressure contact state between the embossing roll 41 and the anvil roll 42, an emboss having a pattern corresponding to the shape of the protrusion of the embossing roll 41 is imparted to the thin paper 32. The details of the emboss pattern applied to the thin paper 32 will be described later.

  Then, the log 10 is formed by winding the long thin paper 32 to which the emboss is given around the paper tube with a predetermined length. At this time, the diameter of the log 10 can be adjusted by adjusting the length of the thin paper 32 wound around the paper tube. Here, the diameter of the log 10 is a value obtained by adding the winding diameter of the thin paper 32 to the diameter of the paper tube. The log 10 has a shape in which a plurality of roll products 20 to be finally manufactured are connected in the width direction of the thin paper 32 (the axial direction of the log 10). Therefore, at this stage, the diameter of the log 10 and the diameter of the roll product 20 which is the final product are the same. For example, when manufacturing a toilet roll or a kitchen roll, the diameter of the log 10 should just be 110 mm-120 mm.

  Thereafter, after the conveyance timing of the log 10 is adjusted, the log 10 is divided in the width direction of the thin paper 32 (the axial direction of the log 10). As shown in FIG. 1, the log 10 is continuously divided by a log saw 43. As a result, a plurality of roll products 20 having a predetermined width (m: m ≧ 2) are obtained from one log 10. For example, about 4 to 10 roll products 20 may be obtained from one log 10. The width of the roll product 20 can be changed according to its application. For example, in the case of a toilet roll, the width (paper width) may be 114 ± 2 mm. In the case of a kitchen roll, the width (paper width) may be about 210 to 235 mm.

  As described above, the roll product 20 in which the thin paper to which embossing is applied is wound can be manufactured. Thereafter, the roll product 20 is collected in a predetermined number and packaged in one bag, and shipped as a roll product package.

[2. First Embodiment of Sheet Roll: Log]
Subsequently, a first embodiment of the sheet roll according to the present invention will be described with reference to FIGS. 2 and 3. The sheet roll according to the first embodiment is the log 10 described above. As shown in FIG. 2, the log 10 has a configuration in which a long and thin thin paper is wound in multiple layers in the length direction. 2 and 3, symbol C indicates a planned cutting line when the log 10 is divided when the individual roll product 20 is obtained from the log 10. By cutting the log 10 along the planned cutting line C, a plurality (m) of roll products 20a, 20b... 20g are obtained. 2 and 3 show an example in which seven roll products 20 (toilet rolls) having a width of 114 ± 2 mm are obtained from one log 10 (m = 7). Therefore, the width of the log 10 (length in the X-axis direction) is 114 ± 2 mm × m (example: m = 7). However, the number of roll products 20 obtained from one log 10 can be appropriately increased or decreased by adjusting the width of the log 10 (width of thin paper).

  As shown in FIG. 2, the thin paper constituting the log 10 is divided into a plurality of (n: n ≧ 2) embossed areas 1a, 1b... So as to be divided in the width direction (X-axis direction). Is formed. The plurality of embossed areas 1a, 1b,... 1g are areas to which embosses of different patterns are applied, as shown in FIG. At the site where the emboss is formed, the thin paper is compressed in the thickness direction. For this reason, on the surface of the thin paper, a portion where the emboss is formed becomes a concave portion, and the other portion becomes a convex portion. Further, when the thin paper is formed by stacking a plurality of paper materials, the respective paper materials can be joined (fused) in the concave portion where the emboss is formed. The embossed pattern (or embossed pattern) here means a series of patterns in which embosses representing patterns such as geometric figures and animals and plants are regularly formed. Examples of geometric figures are straight lines, curves, circles, squares, pentagons, other polygons, etc., but are not limited to these. Examples of the pattern include animals and plants (grass, trees, flowers, animals, insects, etc.), artifacts (cars, airplanes, trains, buildings, etc.), characters, etc., but are not limited to these.

  In the embodiment shown in FIG. 3, seven embossed areas 1a, 1b,..., 1g from 1 to 7 are formed on the thin paper constituting the log 10 (n = 7). As shown in FIG. 3, the first emboss region 1a to the seventh emboss region 1g have different emboss patterns. Specifically, each of the embossed areas 1a, 1b,..., 1g has different types of embossing (types of figures and patterns) that are constituent elements of the embossed pattern. For example, the embossing pattern of the second embossing region 1b has sunflowers, leaves, and embosses representing curves as components. Further, for example, the emboss pattern of the third emboss area 1c includes an emboss representing a squirrel and an acorn as a constituent element. In this way, it can be determined that the emboss pattern is different depending on the type of emboss constituting the emboss pattern.

  In the embodiment shown in FIGS. 2 and 3, each embossed region 1a, 1b... 1g is divided in the width direction (X-axis direction) of the thin paper. For this reason, although not shown, each embossed region 1a, 1b,... 1g continues continuously from one end to the other end in the longitudinal direction (Y-axis direction) of the thin paper. In the present invention, the number (n) of the embossed regions may be 2 or more, preferably 3 or more, and particularly preferably 4 or more. There is no particular upper limit on the number (n) of the embossed areas, but it may be, for example, 10 or less or 15 or less.

  Also, as shown in FIG. 3, embosses are formed on the surface of the thin paper almost over the entire area. That is, it is preferable that the surface of the thin paper is composed of only the embossed areas 1a, 1b..., And there is no area where the embossed pattern is not provided. Specifically, a 5 cm square reference graphic is shown in the lower left of FIG. As can be seen by referring to the embossing example shown in FIG. 3 and a 5 cm square reference figure, there is an area where the embossing is not formed over the 5 cm square (ie, the non-embossing area) on the surface of the thin paper. Not done. That is, no matter what part of the surface of the thin paper is seen, at least a part of the emboss is present in the 5 cm square area. In this sense, the thin paper has an emboss formed over almost the entire surface. However, in the state of the log 10, there are manufacturing clearances (margins) at the left and right end portions in the width direction and the front and rear end portions in the length direction, and embosses are formed in these portions. There may not be. Since such clearance may be removed and discarded during the manufacturing process, such clearance is not considered as the surface of the thin paper on which embossing is to be formed. In other words, even if the clearance without embossing is formed over 5 cm square, if at least a part of the emboss is present in the 5 cm square region at a portion other than the clearance, Such logs are within the scope of the present invention.

  More specifically, as shown in FIG. 3, the surface of the thin paper has a region where no embossing is formed over the entire length direction and width direction (that is, a non-embossing region). Not. That is, when an imaginary straight line is drawn along the length direction and the width direction, at least a part of the emboss is located on the straight line. In this sense, it is preferable that embosses are formed on the surface of the thin paper over almost the entire region in the width direction and the length direction.

  Here, FIG. 3 shows the embossed area ratio of the embossed pattern formed in each embossed region 1a, 1b... 1g. The “embossed area ratio” as used herein refers to the area of the portion where the thin paper is compressed by embossing (compressed portion) or the portion where the plurality of paper materials constituting the thin paper are joined (joined portion). It is a ratio (ratio) to the area. In order to measure the embossed area ratio of each embossed area, for example, three 5 cm square specimens are cut from each embossed area, and each specimen is image-analyzed to determine the embossed area. The ratio of the embossed area to the entire area (embossed area ratio) is calculated. And the average value of the embossed area rate calculated | required from the three test pieces should just be made into the embossed area rate of each embossed area | region.

  As shown in FIG. 3, in the present invention, each embossed region 1a, 1b... 1g has a difference in embossed area ratio of the embossed pattern formed therein within 1%. In the example shown in FIG. 3, the embossed area ratio of the first embossed area 1a is 8.161%, the embossed area ratio of the second embossed area 1b is 8.288%, and the third embossed area The embossed area ratio of 1c is 8.276%, the embossed area ratio of the fourth embossed region 1d is 8.275%, the embossed area ratio of the fifth embossed region 1e is 8.276%, The embossed area ratio of the 6 embossed area 1f is 8.307%, and the embossed area ratio of the seventh embossed area 1g is 8.112%. Therefore, in the example of FIG. 3, the embossed area ratio is in the 8% range in all the embossed regions 1a, 1b,. Thus, it is preferable that the embossed areas 1a, 1b... 1g each have a difference in embossed area ratio within 1%. In particular, the difference in embossed area ratio is more preferably within 0.5%, within 0.3%, or within 0.2%. Thus, the bulkiness of the whole thin paper can be made uniform by keeping the difference in the embossed area ratio of the plurality of embossed regions 1a, 1b... 1g within 1%. Thereby, since it can prevent that distortion generate | occur | produces in the winding diameter of the log 10 obtained by winding thin paper in multiple layers, it becomes possible to maintain the productivity of the roll product 20.

  The embossed area ratio of each embossed region 1a, 1b... 1g can be appropriately designed according to the use of the roll product 20 finally obtained. For example, the embossed area ratio of each embossed region 1a, 1b... 1g can be 3% to 15% or 7% to 10%. In particular, by setting the embossed area ratio to 7% to 10%, it is possible to obtain a thin paper with high aesthetics with uniform embossing as shown in FIG. In addition, by setting the embossed area ratio to 7% to 10%, the embossing is densely present throughout the thin paper, so that the unevenness formed on the surface of the thin paper becomes fine and the bulkiness of the thin paper is almost reduced. Can be aligned. Thereby, when the log 10 is obtained by winding thin paper, distortion generated in the winding diameter of the log 10 can be almost eliminated.

  In the present invention, the number of embossed areas 1a, 1b... Having different embossed patterns formed on the thin paper constituting one log 10 is represented by n (n ≧ 2). In addition, it can be paraphrased that n is the number of types of emboss patterns on the thin paper surface. The number of roll products 20 obtained by dividing one log 10 is represented by m (m ≧ 2). In this case, n and m are not necessarily equal numbers. For example, n can be larger than m (n> m), and n can be smaller than m (n <m). However, in the present invention, n is most preferably a number equal to m (n = m). Thus, by setting “n = m”, it is possible to give embosses of different patterns to each of the plurality of roll products 20 obtained from one log 10. Thereby, since the roll product 20 with various variations can be provided to the user, the user can be entertained and the purchase motivation can be enhanced.

  Further, as shown in FIG. 3, the boundaries between the embossed regions 1 a, 1 b,... 1 g formed on the surface of the thin paper do not necessarily need to coincide with the planned cutting line C of the log 10. In other words, the width of each embossed region 1a, 1b... 1g may not coincide with the interval between the planned cutting lines C of the log 10 (that is, the width of the roll product 20). However, the boundaries between the embossed areas 1a, 1b,..., 1g can be matched with the planned cutting line C of the log 10. If it does in this way, an embossing pattern can be clearly changed for every roll product 20. FIG. Even if the boundaries between the embossed areas 1a, 1b... 1g and the planned cutting line C of the log 10 are strictly matched, a deviation of about 2 mm may occur depending on the accuracy of the processing machine. Therefore, if the displacement is about 2 mm, the boundaries of the embossed areas 1a, 1b,.

  As described above, according to the first embodiment of the present invention, even in the log 10 provided with different emboss patterns, the distortion of the winding diameter can be minimized. Therefore, the log 10 can be divided and a plurality of roll products 20 can be manufactured with high productivity. In addition, a plurality of roll products 20 having different emboss patterns can be continuously manufactured from one log 10. For this reason, it becomes possible to supply the roll product 20 with high commercial value efficiently.

[3. Second Embodiment of Sheet Roll: Roll Product]
Next, a second embodiment of the sheet roll according to the present invention will be described with reference to FIGS. 4 and 5. The sheet roll according to the second embodiment is the roll product described above. As described above, the roll product 20 is obtained by dividing the log 10. As shown in FIG. 4, the roll product 20 has a structure in which a long belt-like thin paper is wound in multiple layers in the length direction. 4 and 5, the roll product 20 is a toilet roll having a width of 114 ± 2 mm. Further, the roll product 20 (toilet roll) has a perforation line P for separating the thin paper individually along the width direction. The perforation lines P are provided at regular intervals in the longitudinal direction of the thin paper.

  As shown in FIGS. 4 and 5, in the roll product 20 according to the second embodiment, unlike the first embodiment described above, the embossed regions 1 a at n places (n ≧ 2) having different emboss patterns are provided. , 1b... Are divided in the length direction of the thin paper. Further, n embossed areas 1a, 1b,... Are periodically and repeatedly formed in the length direction of the thin paper. That is, in the example shown in the figure, the first embossed region 1a to the seventh embossed region 1g are formed adjacent to each other in the length direction of the thin paper. Further, the first embossed region 1a to the seventh embossed region 1g have different embossed patterns. Further, the first embossed region 1a to the seventh embossed region 1g are periodically repeated. That is, a group of the first embossed region 1a to the seventh embossed region 1g is formed again after the group of the first embossed region 1a to the seventh embossed region 1g.

  Thus, it can be said that the direction in which the embossed areas 1a, 1b,... Formed on the thin paper are divided is different between the first embodiment and the second embodiment. Regarding other conditions, basically, the conditions described in the first embodiment can be used in the second embodiment. For example, in the second embodiment, the n embossed regions 1a, 1b,... Each have a difference in embossed area ratio within 1%. Further, the thin paper does not have a region (non-embossed region) where embossing is not given over 5 cm square or more between the embosses except for the end portions in the length direction and the width direction. Further, the thin paper does not have a region (non-embossed region) to which no embossing is given in the length direction and the width direction. Furthermore, it is preferable that the embossed areas 1a, 1b... Have an embossed area ratio of 7% or more and 10% or less.

  In the roll product 20 of the second embodiment, the perforation lines P along the width direction of the thin paper are provided at regular intervals in the longitudinal direction of the thin paper. Here, as shown in FIG. 5, the boundaries of the embossed regions 1a, 1b,... 1g formed on the surface of the thin paper do not necessarily need to coincide with the perforation line P. In other words, the width of each embossed region 1a, 1b... 1g may not coincide with the interval between the perforation lines P. However, the boundaries between the embossed regions 1a, 1b,. In this way, the emboss pattern can be made different clearly for each piece of thin paper cut along the perforation line P. As a result, when the user cuts the thin paper along the perforation line P, the user can enjoy the difference in the emboss pattern that is different for each piece. Note that even if the boundary between the embossed regions 1a, 1b,... 1g and the perforation line P are strictly matched, a deviation of about 2 mm may occur depending on the accuracy of the processing machine. For this reason, if the displacement is about 2 mm, it is assumed that the boundary perforation line P of each embossed region 1a, 1b.

  As mentioned above, in this specification, in order to express the content of this invention, embodiment of this invention was described, referring drawings. However, the present invention is not limited to the above-described embodiments, but includes modifications and improvements obvious to those skilled in the art based on the matters described in the present specification.

  The present invention relates to a roll product such as a toilet roll and a paper roll such as a log as a manufacturing intermediate. The present invention also relates to a method for manufacturing a roll product. Therefore, the present invention can be suitably used in the manufacturing industry of sanitary thin paper such as toilet rolls.

DESCRIPTION OF SYMBOLS 1 (1a, 1b etc.) ... Emboss area | region 10 ... Log 20 (20a, 20b etc.) ... Roll product 31 ... Original fabric roll 32 ... Thin paper (base paper) 41 ... Emboss roll 42 ... Anvil roll 43 ... Log saw C ... Scheduled cutting line P ... Perforated line

Claims (9)

A paper roll in which thin paper having a predetermined length and width is wound in the length direction,
The thin paper has n (n ≧ 2) embossed regions (1a, 1b...) Provided with embosses of different patterns.
The n embossed regions (1a, 1b...) Each have a difference in embossed area ratio within 1%. 2. The paper roll according to claim 1, wherein the thin paper does not have a region where the emboss is not provided over 5 cm square or more between the embosses except for end portions in a length direction and a width direction. The paper roll according to claim 1, wherein the thin paper does not have a region where the emboss is not provided in a length direction and a width direction. The paper according to claim 1 or 2, wherein each of the plurality of embossed regions (1a, 1b ...) has an embossed area ratio of 7% or more and 10% or less, and a difference in the embossed area ratio is within 1%. roll. The paper roll is a log (10) in which m (m ≧ 2) roll products (20a, 20b...) Are obtained by dividing in the width direction of the thin paper,
The paper roll according to any one of claims 1 to 4, wherein the n embossed areas (1a, 1b, ...) are divided in a width direction of the thin paper. When the width of one roll product (20) obtained from the log (10) is 144 ± 2 mm,
The paper roll according to claim 5, wherein the number m of the roll products (20) obtained from the log (10) is equal to the number n of the embossed regions (1a, 1b ...). The paper roll is a roll product (20),
The n embossed areas (1a, 1b...) Are divided in the length direction of the thin paper,
The paper roll according to any one of claims 1 to 4, wherein the n embossed regions (1a, 1b, ...) are periodically and repeatedly formed in the length direction of the thin paper. A method for manufacturing a roll product (20), comprising:
The whole area of the thin paper having a predetermined length and width is divided in the width direction of the thin paper to give embosses of different patterns, and each of n (n ≧ 2) places where the embosses of different patterns are given. Forming embossed regions (1a, 1b...);
Forming a log (10) wound in the longitudinal direction of the thin paper;
Dividing the log (10) in the width direction of the thin paper to form m (m ≧ 2) roll products (20a, 20b...),
The n embossed regions (1a, 1b...) Each have a difference in embossed area ratio within 1%. The method for manufacturing a roll product according to claim 8, wherein the number m of the roll products (20) obtained from the log (10) is equal to the number n of the embossed regions (1a, 1b ...).

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