JP6814424B2 - Toilet roll and toilet paper embossing integration method - Google Patents

Description

The present invention comprises a toilet roll in which a plurality of strip-shaped toilet paper base papers are laminated and integrated by embossing applied along a continuous direction, and a toilet roll is rolled, and a plurality of strip-shaped toilet paper base papers are wound together. The present invention relates to an embossing integration method for preventing ply peeling.

A toilet roll made by wrapping a strip of toilet paper base paper in a roll shape is well known. In this toilet roll, the toilet paper is a multi-ply one in which a plurality of toilet paper base papers are laminated and integrated, and a toilet. There is a single one that keeps the base paper as it is.

Of these, the plurality of plies are manufactured by embossing and integrating the ply peeling of the laminated base papers (also referred to as edge embossing, contact embossing, etc. Hereinafter, this embossing integration is referred to in the present invention and the specification. It is mainly prevented by edge embossing).

This edge embossing is generally made of a metal or rubber that receives a relatively narrow edge embossing roll in which a plurality of unit convex embossing is applied in a predetermined embossing pattern, and the edge embossing roll. A predetermined embossing pattern is embossed through the receiving roll.

Edge embossing is an embossing that is arranged in a geometrical or random pattern over a wide range of the paper surface to improve the design, smoothness and bulkiness of the toilet paper (such embossing is the main embossing, design embossing, etc. It is also referred to as micro-embossing, macro-embossing, etc. Also referred to as main embossing in the present invention and the present specification).

That is, first, each toilet paper base paper must be crimped firmly enough to prevent ply peeling, and the wear resistance of the edge embossed roll must be taken into consideration while ensuring such strong crimping property. In addition, it is necessary to prevent the shape of the product from being affected by the addition of edge embossing.

Regarding the crimpability, the pressure related to the unit convex embossing may be increased, but simply increasing the pressure causes problems such as a decrease in wear resistance and a hole in the toilet paper. Further, if the top area of the unit convex embossing formed on the edge embossing roll is widened or the unit convex embossing is densely arranged, the wear resistance is improved, but simply doing so makes the toilet paper roll-shaped. When it is processed into a strip, the crimped portion rises like a band, and ribs are formed on the peripheral surface of the roll, which impairs the appearance.

In addition, if the top area of the unit convex embossing is reduced, the phenomenon that the crimped portion rises in a strip shape when the toilet paper is processed into a roll shape is less likely to occur, but it becomes difficult to ensure wear resistance and at the time of application. Bouncing, in which the edge embossing roll jumps or rattles due to vibration, and the one-sided contact phenomenon in which the edge embossing roll tilts and contacts the paper surface without surface contact are likely to occur, which causes edge embossing. There may be a part that is not given, or a part that becomes an embossed recess due to embossing due to excessive pressurization may have a hole, which may result in an unattractive product.

Secondly, the edge embossing is used for each base paper while maintaining the effect of the design and bulkiness of the main embossing, especially in the toilet roll having the main embossing for improving the design and bulkiness described above. It is required to firmly crimp each other. In particular, the edge embossing is required to be less noticeable than the main embossing given due to its bulkiness and design, even though it is firmly applied so as to crimp each base paper. ..

Patent No. 5399727 Patent No. 4627892 Patent No. 4450421 Patent No. 5331530 Patent No. 5005085

Therefore, the main problems of the present invention are to solve the above-mentioned problems related to edge embossing, prevent ply peeling, prevent bouncing and one-sided contact, prevent formation of rib-like portions when rolled, and edge emboss roll. It is an object of the present invention to provide a toilet roll having excellent wear resistance and inconspicuous edge embossing, and a method for embossing and integrating the toilet roll.

The present invention that solves the above problems is as follows.

<Invention according to claim 1>
This is a toilet roll made by rolling multiple ply toilet papers, which are made by laminating and integrating multiple strips of toilet paper base paper by embossing along the continuous direction.
The toilet paper has a main emboss
The embossing is;
A unit concave embossing row having a shape having sides parallel to the width direction orthogonal to the continuous direction of the toilet paper and arranged at a pitch of 3.9 to 5.0 mm in the continuous direction is formed by 4 in the width direction. Having multiple rows within the range of .37 to 6.11 mm
Unit concave embossing is located in the width direction at each position in the continuous direction.
Moreover, each unit concave emboss is located within the range of each unit main emboss recess constituting the main emboss in the width direction, and is 30% or more of the length of each unit concave emboss in the continuous direction in the continuous direction. range overlaps the each of the unit main embossed depression of the main embossed,
A toilet roll that features that.

<Invention according to claim 2>
The main embossing is a quadrangle having a bottom surface of 1.0 to 1.5 × 1.0 to 1.5 mm on the entire paper surface, and the center spacing in the continuous direction is 4.5 to 5. The toilet roll according to claim 1, wherein the main embossed recesses of each unit having 0 mm are arranged in a grid pattern at an arrangement angle of 45 ° with respect to the width direction.

<Invention according to claim 3>
Toilet paper in which a plurality of sheets of toilet paper base paper are stacked, and the plurality of sheets of toilet paper base paper are laminated and integrated through between an edge embossing roll having a large number of convex embossing on the peripheral surface and a receiving roll that receives the edge embossing roll. It is an embossing integration method of
Multiple toilet paper base papers with main embossing
The convex embossing pattern on the peripheral surface of the edge embossing roll is;
The unit convex embossing having a side parallel to the width direction along the rotation axis direction of the edge embossing roll is within the range of 3.9 to 5.0 mm along the moving direction of the peripheral surface during the rotation of the edge embossing roll. The unit convex embossing is located in the width direction at each position in the continuous direction.
Using this edge embossing roll, each unit convex embossing is located within the range of each unit main embossing recess constituting the main embossing in the width direction with respect to the toilet paper base paper, and each unit convex in the continuous direction. A method for embossing and integrating toilet paper, wherein a range of 30% or more of the length in the continuous direction of embossing overlaps with the main embossing recess of each unit of the main embossing.

<Invention according to claim 4>
The main embossing is a quadrangle having a bottom surface of 1.0 to 1.5 × 1.0 to 1.5 mm on the entire paper surface, and the center spacing in the continuous direction is 4.5 to 5. The method for embossing and integrating toilet paper according to claim 3, wherein the main embossed recesses of each unit having 0 mm are arranged in a grid pattern at an arrangement angle of 45 ° with respect to the width direction.

According to the above invention, the ply peeling prevention property, the bouncing and one-sided contact prevention property, the rib-like portion formation prevention property when rolled, and the wear resistance of the edge embossed roll are excellent, and further, the edge An embossed toilet roll and a method of embossing the toilet roll are provided.

It is a schematic perspective view of the toilet roll which concerns on this invention. It is a figure for demonstrating the edge embossing which concerns on this invention. It is a figure for demonstrating another form of edge embossing which concerns on this invention. It is a figure for demonstrating the mode of giving edge embossing which concerns on this invention. It is a figure for demonstrating the convex embossing roll which concerns on this invention. It is a figure for demonstrating the embossing pattern in the convex embossing roll which concerns on this invention. It is a top view of the toilet paper to which the main embossing which concerns on this invention was given. It is a figure which shows the cross section of the toilet paper to which the main embossing which concerns on this invention was given, and in particular, is the figure which shows the AA cross section, BB cross section, CC cross section in FIG. It is a figure for demonstrating the pattern of edge embossing of Comparative Examples 1 to 4 and the conventional example. It is a figure for demonstrating the test method of ply peeling prevention property.

Next, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7. In addition, the explanation mainly describes the toilet roll, and also explains the method of embossing and integrating the toilet paper.

The toilet roll 1 according to the present embodiment is shown in FIG. 1 (note that the main embossing is omitted in FIG. 1). The toilet roll 1 is laminated and integrated by embossing (hereinafter, also referred to as edge embossing) 2 in which a plurality of strip-shaped toilet paper base papers 11 and 11 are applied along a continuous direction at an edge in the width direction thereof. A plurality of ply toilet papers 10 are wound around a paper tube 3 in a roll shape. The position where the edge embossing 2 is arranged is preferably at both edges in the width direction of the toilet paper 10, more specifically, at the edges within a range of 50 mm from both edges, but this position is not always the case. Not limited to. Further, it may be arranged only on one side edge. The number of plies is preferably 2 to 3 plies, and particularly preferably 2 plies. Further, it is desirable that the thickness of the toilet paper 10 is 100 to 350 μm, and the paper density per ply is 11.0 to 25.0 g / m ² . Within the range of the number of plies, the paper thickness and the paper density, softness and water absorption during use can be ensured, and in particular, the effect of the edge embossing 2 having the configuration according to the present invention described later becomes more remarkable.

The paper density according to the present embodiment is based on the paper density measurement method of JIS P 8124 (1998), and the paper thickness is defined as the paper thickness after sufficiently adjusting the humidity under the conditions of JIS P 8111 (1998). Under the same conditions, a dial thickness gauge (thickness measuring device) "PEACOCK G type" (manufactured by Ozaki Seisakusho) is used to measure any five different points of the toilet paper 10, and the average value of the measured values at these five points.

The size of the toilet roll 1 is not limited, but generally, the width L1 is 100 to 120 mm, the diameter L2 is 100 to 120 mm, the winding length (total length of the toilet paper) is 18 to 70 m, and the outer diameter of the paper tube. L3 is 35 to 50 mm, and the toilet roll 1 according to the present invention can also be in this range.

On the other hand, the toilet paper 10 according to the present embodiment is provided with a main emboss 4 having a geometric arrangement over a wide range of the paper surface in order to improve design, smoothness and bulkiness. The shape and arrangement of each unit main embossing recess 40 constituting the main embossing 4 can be appropriately designed within a range in which the relationship with the pattern of the edge embossing 2 according to the present invention described below can be achieved. In FIGS. 2 and 3, the main emboss 4 is represented by a dotted line and the edge emboss 2 is represented by a solid line.

On the other hand, the edge embossing 2 applied to the toilet paper 10 according to the present embodiment has a characteristic pattern as follows. That is, in the edge embossing 2 according to the present embodiment, the unit concave embossing 20 having a shape having sides E1 and E2 parallel to the width direction orthogonal to the continuous direction of the toilet paper 10 is 3.9 to 5.0 mm in the continuous direction. There are a plurality of unit concave embossing rows 20L arranged at the pitch L7 in the range L8 of 4.37 to 6.11 mm in the width direction, and unit concave embossing in the width direction at each position in the continuous direction. It is a pattern in which 20 is located. In other words, one or more unit concave embosses 20 exist in the width direction at each position in the continuous direction.

In this pattern of edge embossing 2, since the unit concave embossing rows 20L in which the unit concave embossing 20 and 20 are arranged at a predetermined pitch L7 are formed in the range L8 in the relatively narrow width direction, the ply peeling is sufficiently sufficient. It is possible to secure the ply peeling strength that can be prevented.

In addition, this edge embossing 2 pattern also has an advantage at the time of application. That is, as shown in FIG. 4, the edge embossing 2 is applied after the toilet paper base papers 11 and 11 are overlapped (the sheets in the overlapped state are indicated by reference numeral 11A in the figure), and then the toilet paper base paper is added. A relatively narrow edge embossing roll 5 in which a plurality of unit convex embossing 20x is formed by the above-mentioned pattern of the edge embossing 2 to be imparted, and the edge embossing thereof, particularly at a portion of 11 at an appropriate position at the time of production. It is applied by the edge embossing means 56 that is embossed through between the metal or rubber receiving roll 6 that receives the roll 5. In the illustrated example, the edge embossing roll is in the upper position and the receiving roll 6 is in the lower position, but the positional relationship between these rolls is not limited to this. The arrangement of the edge embossing roll 5 and the receiving roll 6 may be upside down from the position shown in FIG.

Therefore, the arrangement pattern of the unit convex embossing 20x of the edge embossing roll 5 that imparts the pattern of the edge embossing 2 of the present embodiment is also a corresponding arrangement pattern. That is, as shown in FIG. 6, the embossing pattern in the edge embossing roll 5 according to the present embodiment is parallel to the width direction along the rotation axis direction of the edge embossing roll 5 so as to correspond to the pattern of the edge embossing roll 2. A unit in which convex embossing 20x having a shape having sides e1 and e2 is arranged at a pitch L12 of 3.9 to 5.0 mm along the rotation direction of the edge embossing roll 5, that is, the movement direction of its peripheral surface during rotation. It is assumed that a plurality of convex embossing rows 20l are provided within the range L13 of 4.37 to 6.11 mm in the width direction, and the unit convex embossing 20x, 20x is located in the width direction at each position in the continuous direction. Become.

Then, in particular, in order to correspond to the unit concave emboss 20 having a shape having sides E1 and E2 parallel to the width direction perpendicular to the continuous direction of the toilet paper 10, the unit convex emboss 20x of the edge emboss roll 5 is the edge emboss roll. Since the unit convex emboss 20x has a shape having sides e1 and e2 parallel to the width direction along the rotation axis direction of 5, when the unit convex emboss 20x is pressed against the paper surface, it is always from the parallel side e1. It will come into contact with the paper. A pattern in which the unit convex emboss 20x touches from the vertices of a diamond or a triangle or a pattern having a circular top surface, in other words, a diamond in which the unit concave emboss 20 of the edge emboss 2 has vertices in the continuous direction of the toilet paper. If it is a triangular pattern or a circular pattern, excessive force is likely to be applied to the apex or one point of the circle when the unit convex emboss 20x starts to touch the paper surface, and the edge emboss roll 5 is particularly the unit convex emboss. Wear is likely to occur. In the pattern of the edge embossing 2 according to the present embodiment, since the unit convex embossing 20x always comes into contact with the paper surface from the side e1 at the time of application, an excessive force is not applied to one point, and the wear thereof is reduced.

Further, in order to correspond to the edge emboss 2 in which the unit concave embosses 20 and 20 are located in the width direction at each position in the continuous direction, the pattern of the edge emboss roll 5 is a unit convex emboss 20x in the width direction at each position in the continuous direction. , 20x is located, so that the edge embossing roll 5 is always in contact with any unit convex embossing 20x with respect to the paper surface, so that the edge embossing roll 5 is in stable contact with the paper surface. In particular, the bouncing of the edge embossing roll 5 and the phenomenon of one-sided contact with the paper surface at an angle are less likely to occur. In addition, therefore, embossing is firmly applied and ply peeling is effectively prevented.

Here, the fact that the unit concave emboss 20 (unit convex emboss 20x) is located in the width direction at each position in the continuous direction means that the two unit concave embosses 20 and 20 partially overlap in the width direction as shown in FIG. (In the figure, the overlapping portion is indicated by the reference numeral D), of course, as shown in FIG. 3, the case where the sides of the unit concave embosses 20 and 20 match is included (in the figure, the matching portion of the sides is indicated by the reference numeral d). Show). If they match, it is ensured that any unit convex emboss 20x is always in contact with the paper surface when the edge emboss 2 is applied. Further, the overlapping width between the unit concave embosses between the rows may be different, but the more stable the overlap width is, the more effectively the bouncing and the one-sided prevention effect are enhanced.

Here, the shape of the unit concave embossing 20 is preferably a shape having sides E1 and E2 parallel to the width direction orthogonal to the continuous direction of the toilet paper 10, and more preferably the core side and the tip side of the toilet roll. Both sides E1 and E2 of the toilet paper 10 have sides E1 and E2 parallel to the width direction perpendicular to the continuous direction of the toilet paper 10, and are particularly quadrangular. In the illustrated example, a rectangle is illustrated, but it may be a parallelogram or a trapezoid. However, the unit concave embossing 20 according to the present invention is not limited to a quadrangle.

Further, the number of the unit concave embossed rows 20L is three rows in the illustrated example, but is not necessarily limited to three rows. However, due to the design of the edge embossing roll 5 for imparting the edge embossing 2, only 1 to 11 rows can be substantially arranged within the above width range. Also, preferably, there are 3 to 5 rows. When the number of rows is 3 to 5, the stability of the edge embossing roll 5 on the paper surface is further enhanced, and the phenomenon of bouncing or one-sided contact is less likely to occur.

On the other hand, the edge embossing 2 according to the present embodiment has the above pattern, and in relation to the main embossing 4, each unit concave embossing 20, 20 ... constitutes each unit main forming the main embossing 4 in the width direction. It is located within the range of the embossed recesses 40, 40 ..., and the range of 30% or more of the length L4 of each unit concave embossed 20, 20 ... in the continuous direction is the main embossed recess of each unit of the main embossing 4. It overlaps with 40, 40 ... It should be noted that the mode of granting the main embossing 4 according to the present embodiment is not limited to the so-called single embossing mode in which the concave portion on one side of the toilet paper 10 becomes a convex portion on the other side, and the ply is configured in the case of a plurality of plies. It also includes a so-called double embossing mode in which embossing is applied to each or only a part of the base paper of the toilet paper. However, in the case of double embossing, the relationship between the edge embossing 2 and the main embossing 4 of the present invention is the main embossing given to the ply located on the outermost peripheral surface side of the toilet roll 1 of the toilet paper base paper constituting the ply. Say the relationship with. In other words, the main embossing 4 according to the present invention appears on the outer peripheral surface side of the toilet paper 10 constituting the toilet roll 1.

As shown in FIG. 1, the toilet paper 10 is used because the toilet paper 10 is continuous in a strip shape and is used by continuously pulling out the toilet paper 10 from the toilet roll holder. The embossed pattern and pattern of the above are not so noticeable to the user even if there is a slight deviation in the continuous direction, but the deviation in the width direction strongly feels uncomfortable. In the pattern of the edge embossing 2 of the present embodiment, in particular, the concave embosses 20, 20 ... Of each unit are positioned within the range of the main embossing recesses 40, 40 ... Of each unit constituting the main embossing 4 in the width direction. The deviation between the unit concave emboss 20 and the unit main embossed recess 40 in the width direction, which gives a strong sense of discomfort, is eliminated, and the overlap of 30% or more in the continuous direction is made to reduce the discomfort of the deviation in the continuous direction. ing. This effect on the design of the appearance becomes remarkable especially when the area of the unit concave embossing is smaller than the area of the unit main embossing recess, and in particular, the area of the unit concave embossing is 40 of the area of the unit main embossing recess. It becomes remarkable when it becomes less than%.

More preferably, the range of overlap in the continuous direction is 30 to 90% of the length L4 of the unit concave emboss 20 in the continuous direction. A mode in which 100% overlap, in other words, a mode in which the unit concave emboss 20 is included in the unit main emboss recess 40 of the main emboss 4, is preferable from the viewpoint of visual design, but the ply peeling prevention property is slightly weakened. .. That is, in the unit main embossed recess 40, the toilet paper base paper 11 is pressed once when the main emboss 4 is applied to consolidate the fibers. It tends to weaken. Therefore, if the overlapping range is set to 30 to 90% as described above, crimping is performed by the edge embossing roll 5 including the non-consolidated portion when the main embossing 4 is applied. It is more desirable.

Further, the pattern of the edge embossing 2 according to the present embodiment is also excellent in preventing the formation of a rib-shaped portion when it is rolled. One of the causes of forming the rib-shaped portion is that the opposite surface of the unit concave emboss 20 is convex, so that the rib-shaped portion is formed by overlapping and laminating the unit concave emboss 20 when the unit is rolled. It is believed that. As described above, in the pattern of the edge embossing 2 according to the present embodiment, a part of the unit concave embossing 20 is located in the unit main embossing recess 40 of the main embossing 4. A part of it is a part that is already compacted by the addition of the main emboss 4 although the crimping property is slightly lowered, so that the increase in the thickness of the toilet paper due to the addition of the unit concave emboss 20 is alleviated, or rather the main The unevenness due to the embossing 4 is canceled out, and therefore, when the roll shape is formed, it is difficult to form the rib-shaped portion even if the unit concave embossing 20 is overlapped and laminated.

Here, each unit concave emboss 20 is located within the range of each unit main emboss recess 40 constituting the main emboss 4 in the width direction, and the length of each unit concave emboss 20 in the continuous direction in the continuous direction. In order to make the range of 30% or more overlap with each unit main embossing recess 40 of the main embossing 4, the size of the unit convex embossing 20x formed on the edge embossing roll 5 and the configuration of the main embossing 4 are appropriately designed. , The edge embossing roll 5 having the convex embossing group of the pattern corresponding to the pattern of the edge embossing 2 according to the present embodiment is brought into contact with the toilet paper base papers 11 and 11 on which the main embossing 4 is formed to form the edge embossing 2. At the time of applying, the contact start position between the edge embossing roll 5 and the toilet paper base papers 11 and 11, the base paper transport speed, the rotation speed of the edge embossing roll 5 and the receiving roll 6 and the like may be appropriately adjusted.

Here, it is desirable that the embossing depth of the unit concave embossing 20 in the edge embossing 2 according to the present embodiment is 0.1 to 1.2 mm. Speaking of embossing conditions, it is desirable that the embossing height of the unit convex embossing 20x is 0.4 to 1.2 mm. Within this range, the edge embossing 2 can be provided so firmly that the ply peeling can be prevented, and it is possible to effectively prevent the toilet paper 10 from having holes or the edge embossing 2 being excessively conspicuous. The effect of setting the embossing depth is particularly remarkable in the paper density and the paper thickness of the above-mentioned toilet paper 10.

On the other hand, as the main embossing 4 according to the present embodiment, a suitable example is a quadrangle having a bottom surface of 1.0 to 1.5 × 1.0 to 1.5 mm, particularly on the entire paper surface shown in FIGS. 7 and 8. The recesses 50, 50 ... With a center spacing L9 of 4.5 to 5.5 mm are arranged in a grid pattern with an arrangement angle of 45 ° with respect to the width direction (the arrangement angle is indicated by the symbol ∠B in FIG. 7). It is the main emboss 4 arranged in. Further, as shown in the illustrated example, the main embossing 4 is continuous from each vertex of the quadrangular bottom surface of a certain unit main embossing recess 40 to the apex of the quadrangular bottom surface of the adjacent unit main embossing recess 40 along a valley line 41. It is desirable that it is a thing. In the main embossing 4, the presence of the valley line 41 extending at an angle of 45 degrees continuous from the bottom surface of the quadrangle enhances the viewer's consciousness from only two directions such as the continuous direction and the width direction to the diagonal direction. As a result, the consciousness of the deviation between the main emboss 4 and the unit concave emboss 20 is easily buried, and the discomfort in appearance due to the edge emboss 2 is extremely reduced.

On the other hand, in manufacturing the toilet roll 1 according to the present embodiment, except for the addition of the edge embossing 2 according to the present invention, it can be manufactured according to a known manufacturing procedure, for example, a long paper tube. It is manufactured through a manufacturing process, a log manufacturing process in which a log is manufactured using wide toilet paper for the long paper tube, and a cutting step in which the log is cut into individual toilet rolls 1. The procedure.

Then, in the log manufacturing process, the toilet roll 1 according to the present embodiment is a plurality of original rolls in which wide toilet paper base papers 11 and 11 corresponding to the width of the log 90 are wound in advance, as shown in FIG. Wide toilet paper base papers 11 and 11 are drawn out from 80 and 80, respectively, and after being stacked and wound around a paper tube, they are passed between an edge embossing roll 5 and a receiving roll 6 to receive the edge. The embossing 2 may be added and laminated and integrated. Although the addition of the main embossing 4 other than the edge embossing is not shown, the main embossing 4 may be applied after the toilet paper base papers drawn from the original rolls are overlapped and before the edge embossing 2 is applied. It is also possible to apply the edge embossing 2 by feeding out the laminated toilet paper base paper from the raw fabric roll wound in the state where a plurality of toilet paper base papers 11A are laminated in advance.

The embossing pressure when the edge embossing 2 and the main embossing 4 are applied may be appropriately adjusted within a known range depending on the thickness and density of the paper.

Regarding the edge embossing of Examples 1 and 2 according to the present invention, the edge embossing of Comparative Examples 1 to 4, and the edge embossing of the conventional example, the appearance of the design, the ply peelability, and the formation of the rib-shaped portion when rolled. The preventability, the wear resistance of the edge embossing roll for imparting the edge embossing, and the degree of embossing were evaluated, and the results are shown in Table 1 below.

The toilet paper used for embossing had a two-ply structure in which two sheets of toilet paper base paper having a paper density of 16.5 g / m ² were stacked, and the paper thickness was 210 μm (2-ply). Further, in the toilet paper, the main embossing shown in FIGS. 7 and 8 was formed in a single embossing mode. The main embossing is a quadrangle having a bottom surface of 1.1 × 1.1 mm, and unit main embossing recesses having a center spacing of 5.0 mm are arranged at an arrangement angle of 45 ° with respect to the width direction, from the apex of each quadrangle. The pattern is such that the valley lines are connected.

Further, regarding the position of the unit concave embossing in the width direction at each position in the continuous direction, the overlap between the unit concave embossing rows of each row is shown as rows a to e from the left side of the paper for the unit concave embossing rows in each example. It is shown in 1 and the drawing.

The edge embossing according to the first embodiment is the pattern shown in FIG. 2, and the shape of the unit concave embossing is a rectangle having a length of 2.77 mm in the continuous direction and a side length of 0.14 mm in the width direction. The positions of the unit concave embosses in each row have overlaps (parts indicated by reference numerals D) between the rows, and the unit concave embosses are located in the width direction at each position in the continuous direction. Further, the area of each unit concave embossing is 31% of the area of the unit main embossing recess, and all the unit concave embossing have an overlap of 39% or more with the unit main embossing recess in the continuous direction, and in the width direction. The unit is arranged within the range of the main embossed recess.

The edge embossing according to the second embodiment is the pattern shown in FIG. 3, and the shape of the unit concave embossing is a rectangle having a length of 1.67 mm in the continuous direction and a side length of 0.23 mm in the width direction. The positions of the unit concave embosses in each row are the same between the rows (the portion indicated by the reference numeral d), and the unit concave embosses are located in the width direction at each position in the continuous direction. Further, the area of each unit concave embossing is 31% of the area of the unit main embossing recess, and all the unit concave embossing have an overlap of 32% or more with the unit main embossing recess in the continuous direction, and in the width direction. The unit is arranged within the range of the main embossed recess.

The edge embossing according to Comparative Example 1 is the pattern shown in FIG. 9A, in which parallelograms whose short sides are along the continuous direction are arranged in a row. The shape of the unit concave embossing is a parallelogram having a short side of 0.5 mm and a long side of 7.07 mm. Each unit embossed recess has only 20% overlap with the unit main embossed recess in the continuous direction, and is arranged so as to straddle the unit main embossed recesses at three points in the continuous direction of the toilet paper.

The edge embossing according to Comparative Example 2 is the pattern shown in FIG. 9B, and the shape of the unit concave embossing is a square with a side of 0.5 mm, and each side is along the continuous direction and the width direction, respectively. .. Further, although there is a matching portion (reference numeral d'part) between the unit concave emboss in column c and the unit concave emboss in column a, the unit concave emboss in column a, the unit concave emboss in column b, and the unit in column b The concave emboss and the unit concave emboss in row c are separated in the continuous direction, and there is a portion where there is no unit concave emboss in the width direction at a certain position in the continuous direction. (The separated portions are indicated by reference numerals W in FIG. 9. The same applies to the other comparative examples and the conventional examples.) Further, each unit concave embossing is an arrangement included in each unit main embossing recess.

The edge embossing according to Comparative Example 3 is the pattern shown in FIG. 9 (C), and the unit concave embossing rows have five rows a to e. The shape of the unit concave emboss is a circle with a diameter of 0.5 mm. In the unit concave embossing in each row, the unit concave embossing in each row is separated in the continuous direction between the rows, and there is a portion where there is no unit concave embossing in the width direction at a certain position in the continuous direction. Of the five rows of unit concave embossing, the unit concave embossing of rows a, c, and e is included in the unit main embossing recess, but the remaining unit concave embossing of rows b and d does not overlap.

The edge embossing according to Comparative Example 4 is the pattern shown in FIG. 9D, and the shape of the unit concave embossing is a square having a side of 0.62 mm, and each side is along the continuous direction and the width direction, respectively. Further, although there is an overlapping portion (reference numeral D'part) between the unit concave emboss in column c and the unit concave emboss in column a, the unit concave emboss in column a, the unit concave emboss in column b, and the unit concave in column b The embossing and the unit concave embossing in row c are separated in the continuous direction, and there is a portion where there is no unit concave embossing in the width direction at a certain position in the continuous direction. All unit concave embosses are included in the unit main embossed recesses, the area of which is 31% of the unit main embossed recesses.

The edge embossing according to the conventional example is the pattern shown in FIG. 9 (E), the shape of the unit concave embossing is a square with a side of 1.1 mm, and each side is along the continuous direction and the width direction, respectively. In the unit concave embossing in each row, the unit concave embossing in each row is separated in the continuous direction between the rows, and there is a portion where there is no unit concave embossing in the width direction at a certain position in the continuous direction. One unit concave embossing in the continuous direction is included in the unit main embossing recess, while another unit concave embossing in the continuous direction has a non-overlapping arrangement. The edge embossing roll used to create each example is the same as the pattern appearing in the edge embossing.

Regarding the design of the appearance, based on the conventional example, visually check whether the edge embossing is less noticeable than the conventional example, and the one that has been improved so that it is almost inconspicuous is ○, only a little more than the conventional example. Those that were not improved were evaluated as Δ, and those that were equal to or more conspicuous than before were evaluated as ×.

Regarding the wear resistance of the edge embossed roll, after applying edge embossing to the toilet paper base paper of about 18,000,000 m, the degree of wear of the edge embossed roll is visually confirmed, and it is less than the conventional example or Those with the same wear resistance as the conventional example are evaluated as ×, those with a slight improvement in wear resistance compared to the conventional example are evaluated as △, and those with no obvious improvement in wear resistance are evaluated as ○. ..

Regarding the prevention of ply peeling, as shown in FIG. 10 (1) front view and (2) side view, the edge embossing of the toilet paper is included so that the width direction is 20 mm and the continuous direction is not perforated. Prepare a sample cut by 100 mm in the range, peel the sample by 30 mm from one end in the continuous direction, fix the separated end 25 mm to each chuck of the tensile tester and set it, and set one chuck at 100 mm / min. The strength of ply peeling when pulled by 50 mm at a speed was measured and evaluated from the measured value. In this test, if the measured value is 4.5 cN or more, it can be judged that there is almost no risk of ply peeling. Therefore, the measured value of 4.5 cN or more was evaluated as ◯.

As for the degree of embossing, visually check whether the unit concave embossing that seems to be caused by bouncing or one-sided contact, perforation, etc. has occurred, and the one that hardly occurs is ○ , Those with a slight decrease in occurrence compared to the conventional example were evaluated as Δ, and those equal to or less than the conventional example were evaluated as ×.

To prevent the formation of rib-shaped parts when rolled, create a toilet roll with 30 m of toilet paper wrapped around a paper tube with an outer diameter of 42.8 mmφ and a width of 114 mm, and how much the edge embossed part is ribbed. I checked if the height of the paper was rising. As a specific confirmation method, each roll was viewed as an end face, and the height of the edge embossed portion was measured with a ruler with reference to the edge of the end face. The measurement is performed by photographing the toilet roll together with a ruler in end view. The measured value was the average value of 5 rolls. In the evaluation, if it was 0.8 mm or less, it was hardly visually felt to be rib-like, so 0.8 mm or less was evaluated as ◯, and further 0.3 mm or less was evaluated as ⊚. Further, when it exceeds 0.8 mm, it can be visually felt that it is ribbed, so a value of more than 0.8 mm to 1.5 mm or less was evaluated as Δ. Further, when it exceeds 1.5 mm, the rib-shaped portion becomes clearly conspicuous, so that the rib-shaped portion exceeds 1.5 mm is evaluated as x.

As can be understood from the results in Table 1, in Examples 1 and 2 in which the configuration of the present invention is adopted, the edge embossing is inconspicuous, the rib-shaped portion is prevented from forming, and the edge embossing roll wear resistance. It was excellent in preventing ply peeling, and good results were obtained in all items.

In the comparative example, the wear resistance of the edge embossing was inferior to that of the present example. In the comparative example, it is considered that the unit concave embossing is not located in the width direction at a certain position in the continuous direction. Further, in particular, in Comparative Example 1 which does not have a plurality of rows and Comparative Example 3 in which the shape of the unit concave embossing is circular, the wear resistance of the edge embossing roll is particularly inferior. Therefore, there are a plurality of rows of unit concave embossing, the unit concave embossing is located in the width direction at each position in the continuous direction, and the unit concave embossing has sides parallel to the width direction orthogonal to the continuous direction of the toilet paper. In the case of the shape, it can be said that the wear resistance of the edge embossing is particularly improved.

Further, in Comparative Example 1 and Comparative Example 3, each unit concave embossing in the edge embossing is conspicuously deviated from the unit main embossing recess in the main embossing, and the appearance design is not improved. It can be said that this point is improved by adopting the relationship between the edge embossing and the main embossing according to the present invention. However, in Comparative Example 2 and Comparative Example 4, the result was that the design was excellent in appearance, but the ply peeling prevention property was slightly inferior to that in Example. If the unit concave embossing is completely included in the unit main embossing recess, it can be said that the crimping force may decrease. Further, since there is a portion where there is no unit concave embossing in the width direction at a certain position in the continuous direction, the wear resistance of the edge embossing roll is also inferior.

Further, in Comparative Example 1 and Comparative Example 3, both of the results were inferior in the formability of the rib-shaped portion.

From the above, if it is out of the configuration of the present invention, the harmony with the main embossing is not achieved, the edge embossing portion is conspicuous, the wear resistance of the edge embossing roll due to bouncing and one-sided contact is not improved, and the ply peeling strength is not improved. May occur.

It was shown that the edge embossing pattern according to the present invention has excellent visual design, prevents the formation of rib-shaped portions, has sufficient ply peelability, and has excellent wear resistance.

1 ... Toilet roll, 10 ... Toilet paper, 11 ... Toilet paper base paper, 3 ... Paper tube, 2 ... Edge embossing (embossing), L1 ... Toilet roll width, L2 ... Toilet roll diameter, L3 ... Paper tube outer diameter 4, 4 ... Main embossing, 40 ... Unit main embossing recess, 20 ... Unit concave embossing, E1 ... Unit concave embossing Toilet paper Short side located parallel to the width direction perpendicular to the continuous direction of the base paper, E2 ... Short side located on the drawer end side of the toilet roll parallel to the width direction perpendicular to the continuous direction of the unit concave embossed toilet paper base paper, L4 ... Length in the continuous direction of the unit concave emboss, L7 ... Unit concave in the continuous direction Embossing interval (pitch), L8 ... Unit concave embossing width direction arrangement range, 20L ... Unit concave embossing row, 20x ... Unit convex embossing, 5 ... Edge embossing roll, 6 ... Receiving roll, 56 ... Edge embossing giving means, e1 ... Short side of the side parallel to the rotation axis direction of the unit convex embossing and in contact with the paper surface quickly during rotation, e2 ... Short side of the side parallel to the rotation axis direction of the unit convex embossing and in contact with the paper surface slowly during rotation, L12 ... Rotation direction Interval (pitch) of unit convex embossing, 20l ... Unit convex embossing row, L13 ... Unit convex embossing arrangement range in width direction, D, D'... Unit concave embossing position overlapping portion, d, d'... Unit concave Matching part of the embossed side, L9 ... Unit center spacing between main embossed recesses, 41 ... Valley line, 80 ... Original roll, 90 ... Log.

Claims (4)

This is a toilet roll made by rolling multiple ply toilet papers, which are made by laminating and integrating multiple strips of toilet paper base paper by embossing along the continuous direction.
The toilet paper has a main emboss
The embossing is;
A unit concave embossing row having a shape having sides parallel to the width direction orthogonal to the continuous direction of the toilet paper and arranged at a pitch of 3.9 to 5.0 mm in the continuous direction is formed by 4 in the width direction. Having multiple rows within the range of .37 to 6.11 mm
Unit concave embossing is located in the width direction at each position in the continuous direction.
Moreover, each unit concave emboss is located within the range of each unit main emboss recess constituting the main emboss in the width direction, and is 30% or more of the length of each unit concave emboss in the continuous direction in the continuous direction. range overlaps the each of the unit main embossed depression of the main embossed,
A toilet roll that features that. The main embossing is a quadrangle having a bottom surface of 1.0 to 1.5 × 1.0 to 1.5 mm on the entire paper surface, and the center spacing in the continuous direction is 4.5 to 5. The toilet roll according to claim 1, wherein the main embossed recesses of each unit having 0 mm are arranged in a grid pattern at an arrangement angle of 45 ° with respect to the width direction. Toilet paper in which a plurality of sheets of toilet paper base paper are stacked, and the plurality of sheets of toilet paper base paper are laminated and integrated through between an edge embossing roll having a large number of convex embossing on the peripheral surface and a receiving roll that receives the edge embossing roll. It is an embossing integration method of
Multiple toilet paper base papers with main embossing
The convex embossing pattern on the peripheral surface of the edge embossing roll is;
The unit convex embossing having a side parallel to the width direction along the rotation axis direction of the edge embossing roll is within the range of 3.9 to 5.0 mm along the moving direction of the peripheral surface during the rotation of the edge embossing roll. The unit convex embossing is located in the width direction at each position in the continuous direction.
Using this edge embossing roll, each unit convex embossing is located within the range of each unit main embossing recess constituting the main embossing in the width direction with respect to the toilet paper base paper, and each unit convex in the continuous direction. A method for embossing and integrating toilet paper, wherein a range of 30% or more of the length in the continuous direction of embossing overlaps with the main embossing recess of each unit of the main embossing. The main embossing is a quadrangle having a bottom surface of 1.0 to 1.5 × 1.0 to 1.5 mm on the entire paper surface, and the center spacing in the continuous direction is 4.5 to 5. The method for embossing and integrating toilet paper according to claim 3, wherein the main embossed recesses of each unit having 0 mm are arranged in a grid pattern at an arrangement angle of 45 ° with respect to the width direction.

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