JP6684065B2 - Packaging and sanitary thin paper products - Google Patents

Description

  The present invention relates to a package and sanitary tissue paper product containing sanitary tissue paper, such as tissue paper, for example.

  BACKGROUND ART Conventionally, a portable pocket tissue in which tissue paper is housed inside a package is known (for example, refer to Patent Document 1). A perforation provided on one surface of the package of the pocket tissue is cut open to form a take-out port, and the tissue paper inside the package is pulled out through the take-out port.

  Perforation requires a certain level of strength (hardness to break) to prevent it from breaking during the production and transportation of pocket tissues. However, if the perforation is too high, There is also a risk that the tissue paper inside the package will be torn when the slit is cut open. Therefore, in order to make the tissue paper less likely to be torn, there is one in which the strength of the tissue paper itself is improved (for example, see Patent Document 2).

Japanese Patent No. 5528045 JP, 2013-111328, A

By the way, the mainstream of the contents of the pocket tissue is Z-folded in the MD direction, folded back outward, and then V-folded in the CD direction. The center of the contents in the CD direction is one set (2 plies), It is easy to tear. Then, the perforation is generally provided in a substantially central portion of one surface of the package along the longitudinal direction of the package. For this reason, the tissue paper is less overlapped only under the perforations, and may be torn even if the strength of the tissue paper itself is improved as in Patent Document 2 and the like. In addition, if the strength of the tissue paper itself is increased too much, there is a problem that the texture and the flexibility are deteriorated.
Further, even if the outer surface (surface) of the package is subjected to a satin finish as in Patent Document 1 and the like, if the outer surface of the package held by the user is slippery, the perforation is cut open. Since the pocket tissue is folded so that the two long side edges are brought close to each other, the tissue paper is easily torn. In particular, when the moisturizing tissue paper having excellent softness is used as a pocket tissue, there is a problem that the tissue paper has a weak lateral tensile strength and is easily broken.

  The present invention has been made in view of such a problem, and an object of the present invention is to cut perforations with a weaker force, and to prevent the sanitary thin paper from being torn when opening perforations. It is an object of the present invention to provide a package and a sanitary thin paper product that can be manufactured.

In order to solve the above problems, the invention described in claim 1 is
A package in which sanitary thin paper is housed inside,
Extending in a predetermined direction, having a perforation constituting surface portion provided with perforations forming the outlet of the sanitary thin paper by being cut open,
The perforated surface portion is
The inner side surface facing the sanitary thin paper is made relatively slippery, while the outer side surface opposite to the inner side surface sandwiches the perforation in a direction intersecting the extending direction, Is provided with two non-slip areas that are made difficult to slip,
The two non-slip regions are formed by sticking a non-slip film formed using a relatively non-slip material to the outer surface of the perforation structure surface portion,
It is characterized in that the perforation is cut open by causing the pressing force (P) of the finger calculated by the formula (1) to act on the two non-slip regions in the range of 100 gf to 375 gf.
Finger pressing force when cutting perforations (P) =
Perforation strength (F) / (Outer static friction coefficient-Inner static friction coefficient) (1)
The invention according to claim 2 is
A hygienic thin paper sheet is housed inside, and has a two-layer structure comprising an inner layer portion and an outer layer portion,
Extending in a predetermined direction, having a perforation constituting surface portion provided with perforations forming the outlet of the sanitary thin paper by being cut open,
The perforated surface portion is
The inner surface of the inner layer portion facing the sanitary thin paper is made relatively slippery, while the outer surface of the outer layer portion opposite to the inner surface has the perforation in the extending direction. Two non-slip areas that are made relatively non-slip are provided so as to be sandwiched in the intersecting direction,
It is characterized in that the perforation is cut open by causing the pressing force (P) of the finger calculated by the formula (1) to act on the two non-slip regions in the range of 100 gf to 375 gf.
Finger pressing force when cutting perforations (P) =
Perforation strength (F) / (Outer static friction coefficient-Inner static friction coefficient) (1)

The invention described in claim 3 is the package according to claim 1 ,
The two non-slip regions are provided so as to face each other on the outer side surface of the perforation structure surface portion so as to sandwich a substantially central portion in the extending direction of the perforation.

Further, the invention described in claim 4 is the package according to claim 1 ,
The perforation is formed so as to extend in a predetermined one direction on the perforation constituting surface portion,
The two non-slip regions are respectively provided on the outer side surface of the perforation-constituting surface portion substantially parallel to the extending direction of the perforations.

Further, the invention according to claim 5 is
A sanitary tissue paper product,
The sanitary thin paper is accommodated inside the packaging body according to any one of claims 1 to 5 ,
The sanitary thin paper is characterized by containing a moisturizing agent.

  According to the present invention, it is possible to cut open perforations with a weaker force, and it is possible to prevent tearing of the sanitary thin paper when opening perforations.

It is a perspective view showing a pocket tissue of Embodiment 1 to which the present invention is applied. It is sectional drawing of the pocket tissue in the II-II line of FIG. It is a perspective view which shows the modification of the non-slip region of a pocket tissue. It is a figure for demonstrating calculation of the static friction coefficient of the Example of pocket tissue. It is a figure for explaining calculation of breaking strength of a perforation of an example of a pocket tissue. It is a perspective view which shows the pocket tissue of Embodiment 2 to which this invention is applied. FIG. 7 is a sectional view of the pocket tissue taken along the line VII-VII in FIG. 6.

Hereinafter, a specific mode of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated example.
In the following description, the thickness direction of the pocket tissue 100 is the vertical direction, and the extending direction of the short side of the pocket tissue 100 is the front-back direction (short direction), and the direction orthogonal to both the vertical direction and the front-back direction. Is the left-right direction (longitudinal direction).

[Embodiment 1]
FIG. 1 is a perspective view showing a pocket tissue 100 according to a first embodiment of the present invention. 2 is a sectional view of the pocket tissue 100 taken along the line II-II in FIG.
As shown in FIGS. 1 and 2, the pocket tissue (sanitary thin paper product) 100 of the first embodiment is formed in a substantially rectangular parallelepiped shape that is long in the left-right direction, and has a plurality of laminated tissue papers (sanitary thin paper; (See FIG. 2) P, ... Are packaged in the first package 1.

As shown in FIG. 2, the tissue paper P is folded in a "Z" shape at three equally divided positions in the front-rear direction along the MD direction, and the upper and lower free end portions are respectively folded back outward. There is. Then, a plurality of tissue papers P, ... Are arranged so that the fold line on the lower free end side of one tissue paper P and the fold line on the upper free end side of another tissue paper P are abutted against each other. Stacked vertically.
In addition, the fold line on the upper free end side of the uppermost tissue paper P is substantially parallel to the perforation M (described later) provided on the upper surface of the first packaging body 1 and near the perforation M (substantially). It is housed in the first packaging body 1 so as to be positioned immediately below.
The tissue paper P has, for example, a ply structure in which two to three thin paper sheets are laminated.

Further, the tissue paper P may be, for example, a moisturizing tissue paper (lotion tissue paper) obtained by impregnating a base paper with a chemical solution containing a moisturizing agent at a predetermined ratio.
The moisturizing agent may be any commonly used one, and specifically, for example, glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol. And the like, saccharides such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol and trehalose, glucose-based drugs and their derivatives, higher alcohols such as cetanol, stearyl alcohol and oleyl alcohol, and liquid paraffin.
Further, as the base paper, any one may be used as long as it is usually used as a tissue paper, but it is preferable that the base paper has good touch and flexibility and has required strength and absorbability. .

  The above-mentioned structure of the tissue paper P is an example, and the structure is not limited to this. Any known structure may be used.

The first package 1 is formed in a substantially rectangular parallelepiped shape and has perforations M on the upper surface.
That is, the upper surface of the first package 1 constitutes a perforation-constituting surface portion 1a provided with perforations M, and the perforation-constituting surface portion 1a is provided at a substantially central portion in the front-rear direction (short direction). A straight perforation M extending along the left-right direction (longitudinal direction) of the package 1 is provided. When the perforation M is cut open, an outlet (not shown) for the tissue paper P is formed, and the user inserts his / her fingertip into the inside of the first package 1 through the outlet to pick the tissue paper P. As a result, the tissue paper P is pulled out one by one.

  The first package 1 is made of, for example, a film made of polyethylene, non-axially stretched polypropylene or the like. The polyethylene and the non-axially stretched polypropylene illustrated as the material of the first package 1 are examples and not limited to these. For example, the material used for the package of the general pocket tissue 100 may be used. For example, it can be arbitrarily changed.

Further, the inner side surface of the first package 1 facing the tissue paper P is relatively slippery. For example, the coefficient of static friction between the inner surface of the first package 1 and the tissue paper P is preferably about 0.5 or less.
Here, as a method for making the inner surface of the first package 1 relatively slippery, for example, the smoothness of the inner surface is adjusted to a predetermined value, or the material of the first package 1 is selected and adjusted. The method etc. are mentioned.

It should be noted that not only the entire inner side surface of the first package 1, but at least a portion of the inner side surface of the first package 1 corresponding to the perforation-constituting surface portion 1a may be relatively slippery.
A method of measuring the static friction coefficient of the inner surface of the first package 1 will be described later.

Two non-slip regions 2 are formed by sticking two non-slip films 2a and 2a on the outer surface of the perforation-constituting surface portion 1a of the first package 1.
The two non-slip regions 2, 2 are provided on the outer surface of the perforation-constituting surface portion 1a so as to be sandwiched in a direction intersecting the extending direction (the left-right direction) of the perforation M. Specifically, the two non-slip regions 2 and 2 are arranged at a predetermined distance from the perforation M in the front-rear direction, and face each other so as to sandwich a substantially central portion in the extending direction of the perforation M. It is provided. Further, each of the two non-slip regions 2, 2 has, for example, a substantially square shape, and is arranged such that one side is substantially parallel to the extending direction of the perforation M.

The non-slip film 2a is formed of a relatively non-slip material such as synthetic rubber, polyurethane resin, or silicone resin. Further, in order to open the non-slip film 2a and the perforation M, the non-slip film 2a and artificial skin (bioskin plate, thickness 5 mm, length x width: 195 x 130 mm, model number: P001-001, View Co., Ltd. The coefficient of static friction with the Lux (not shown) is preferably 1.2 or more, and more preferably 1.5 or more.
The synthetic rubber, polyurethane resin, and silicone resin illustrated as the material of the non-slip film 2a are merely examples and not limited to these, and can be arbitrarily changed as appropriate. Further, the timing at which the non-slippery film 2a is attached to the first packaging body 1 may be, for example, during the production of the film forming the first packaging body 1, or the tissue paper may be attached to the first packaging body 1 by using the tissue paper. It may be after P is packaged.

Further, the shape, the separation distance, the arrangement, and the like of the above-mentioned two non-slip regions 2, 2 are merely examples, and the present invention is not limited to this, and may be arbitrarily changed. For example, the two non-slip regions 2 and 2 may be arranged such that their end portions are abutted in the front-rear direction with the perforation M interposed therebetween, and are formed in a long shape in the front-rear direction. Alternatively, it may be formed in a long shape (see FIG. 3A) so as to be substantially parallel to the extending direction of the perforations M (see FIG. 3B). Although not shown in the drawings, the non-slip film 2a is adhered to substantially the entire outer surface of the perforation-constituting surface portion 1a, that is, the front and rear regions sandwiching the perforation M on the outer surface. Two non-slip regions 2, 2 may be configured.
Further, the surface of the non-slip film 2a may have irregularities so that the friction with a finger becomes large. For example, a hemispherical concave or convex portion having a diameter of about 0.5 to 3 mm may be processed on the surface. Good, or the whole may be processed into a wavy shape or the like.
The method of measuring the static friction coefficient of the non-slip region 2 will be described later.
<Example>

Hereinafter, examples and comparative examples of the present invention will be described.
The pressing force of a finger when cutting perforations will be described with reference to Examples 1 to 20 and Comparative Examples 1 to 4 below.

(Test pieces)
A test piece made of a polyethylene (PE) film having a thickness of 62 μm is used as Comparative Example 1, and a test piece made of a polyethylene (PE) film having a thickness of 30 μm is used as Comparative Example 2.
A test piece made of a non-axially oriented polypropylene (CPP) film having a thickness of 60 μm is used as Comparative Example 3, and a test piece made of a non-axially oriented polypropylene (CPP) film having a thickness of 45 μm is used as Comparative Example 4.

Further, in the central portion of the outer surface (outer surface of the package of the pocket tissue) of the polyethylene film (thickness 62 μm) of Comparative Example 1, as a non-slip film, a synthetic rubber having a thickness of 0.2 mm, a polyurethane having a thickness of 1 mm, a thickness of A synthetic rubber having a thickness of 1 mm, a synthetic rubber having a thickness of 5 mm, and a silicon rubber having a thickness of 3 mm are adhered to Examples 1, 2, 3, 4, and 5, respectively.
Further, in the center of the outer surface (outer surface of the package of the pocket tissue) of the polyethylene film (thickness 30 μm) of Comparative Example 2, as a non-slip film, a synthetic rubber having a thickness of 0.2 mm, a polyurethane having a thickness of 1 mm, a thickness of Examples in which a synthetic rubber having a thickness of 1 mm, a synthetic rubber having a thickness of 5 mm, and a silicon rubber having a thickness of 3 mm are adhered are Examples 6, 7, 8, 9, and 10, respectively.
Further, a synthetic rubber having a thickness of 0.2 mm and a thickness of 1 mm are used as a non-slip film at the center of the outer surface (outer surface of the package of the pocket tissue) of the non-axially oriented polypropylene film (thickness 60 μm) of Comparative Example 3. Examples in which polyurethane, synthetic rubber having a thickness of 1 mm, synthetic rubber having a thickness of 5 mm, and silicone rubber having a thickness of 3 mm are adhered are Examples 11, 12, 13, 14, and 15, respectively.
Further, a synthetic rubber having a thickness of 0.2 mm and a thickness of 1 mm as a non-slip film are provided in the center of the outer surface (the outer surface of the package body of the pocket tissue) of the non-axially oriented polypropylene film (thickness 45 μm) of Comparative Example 4. Examples in which polyurethane, synthetic rubber having a thickness of 1 mm, synthetic rubber having a thickness of 5 mm, and silicone rubber having a thickness of 3 mm were adhered are Examples 16, 17, 18, 19, and 20, respectively.

The details of the material used as the non-slip film are shown below. The size of each film is 15 × 15 mm (length × width).
0.2 mm thick synthetic rubber; Ultra-thin non-slip tape, Japan Elaster Co., Ltd. 1 mm thick polyurethane; Hypergel sheet, Exseal Corporation Co., Ltd. 1 mm thick synthetic rubber; Eco-friendly rubber roll, Waki Sangyo Co., Ltd. 5mm synthetic rubber; eco-friendly rubber roll, Wake Sangyo Co., Ltd. 3mm thick silicone rubber; eco-friendly silicone rubber, Wake Sangyo Co., Ltd.

(Measurement of outside static friction coefficient)
The outside static friction coefficient is measured by the method of JIS P 8147-2010 (horizontal method).
As a tensile tester, Strograph R manufactured by Shimadzu Corporation was used for measurement (see FIGS. 4 (a) and 4 (b)).
Here, FIG. 4 (a) shows a front view of the tensile tester, and FIG. 4 (b) shows a part of the tensile tester viewed from the side. Further, FIG. 4C shows a combination of “A” and “B” in FIGS. 4A and 4B.
Specific measurement is performed as in (1) to (5) below.
(1) Inside a pocket tissue package of test pieces (length x width: 100 x 100 mm) on the smooth bottom surface of a rectangular parallelepiped weight (height: 25 mm, length x width: 35 x 21 mm) weighing 100 g. The surface (the surface on which the non-slippery film is not attached) is fixed on the entire surface with double-sided tape (Nye stack, model number: NW-15, Nichiban Co., Ltd.). The front end of the lower part of the rectangular parallelepiped shape is rounded with R (0.5 mm).
(2) With the artificial skin (bioskin plate, thickness 5 mm, length x width: 195 x 130 mm, model number: P001-001, Vyrax Co., Ltd.) facing upward, tape the four side edges (cellophane tape (Registered trademark), model number: 4051P-18, Nichiban Co., Ltd.) and paste it on a stainless steel measuring table (length x width: 350 x 250 mm) whose surface is horizontal and smooth. The measuring table is fixed to the lower part of the crosshead of the tensile tester with 5 bolts.
(3) Place the weight on the artificial skin with the surface on which the test piece is fixed facing down.
(4) One end of a stainless index thread is fixed to a load cell, and the other end is passed through a pulley to be connected to a hook attached to the weight.
(5) The crosshead is raised at a speed of 500 mm / min, the weight is pulled horizontally, and the frictional force at the moment when the weight starts moving is defined as the outer maximum static friction force (Fμs), and the outer static friction coefficient (μs) is set. It was measured by μs = Fμs (outer maximum static friction force {gf}) / Fn (vertical load by weight {gf}). The tensile direction of the test piece is the direction in which the perforations are broken (CD direction). The measurement was performed 5 times for each test piece, and the average value was measured as the outside static friction coefficient (μs1).

(Measurement of inner static friction coefficient)
The inner coefficient of static friction was measured in the same manner as the outer coefficient of static friction.
Specific measurement is performed as in (1) to (5) below.
(1) A rectangular parallelepiped weight weighing 100 g (height 25 mm, length × width: 35 × 21 mm) with a smooth bottom surface was used for each test piece (length × width: 100 ×) of Comparative Examples (Comparative Examples 1 to 4). 100mm) pocket tissue package, the outer surface is fixed with double-sided tape (Nye stack, model number: NW-15, Nichiban Co., Ltd.).
(2) Two sets of two tissue papers (length 200 x width 150 mm) Elleair luxury moisturizing tissue, Daio Paper Co., Ltd.) are taped at the four edges to the surface (cellophane tape, model number: 4051P-18, Nichiban Co., Ltd.) Attach it to a horizontal and smooth stainless steel measuring table.
(3) Place the weight on the tissue paper with the surface on which the test piece is fixed facing down.
(4) One end of a stainless index thread is fixed to a load cell, and the other end is passed through a pulley to be connected to a hook attached to the weight.
(5) The crosshead is lifted at a speed of 500 mm / min and the weight is pulled horizontally. The frictional force at the moment when the weight starts moving is defined as the inner maximum static frictional force (Fμs), and the inner static friction coefficient (μs) is calculated. It was measured by μs = Fμs (maximum inner static friction force {gf}) / Fn (vertical load by weight {gf}). The tensile direction of the test piece is the CD direction of the test piece and tissue paper. The measurement was performed 5 times for each test piece, and the average value was measured as the inner static friction coefficient (μs2).
The results of Comparative Example 1 were used in Examples 1 to 5, and the results of Comparative Example 2 were used in Examples 6 to 10.
Moreover, Examples 11 to 15 incorporated the results of Comparative Example 3, and Examples 16 to 20 incorporated the results of Comparative Example 4.

(Measurement of breaking strength of perforations)
The test was performed using a tensile compression tester (model number: TG-200N, Minebea Co., Ltd.) (see FIG. 5). Here, FIG. 5 shows a front view of the tensile compression tester.
A perforation (3 mm in length, 1 mm interval) was formed in the approximate center portion (position of 75 mm) of the test piece (length x width: 150 x 25 mm) of the comparative example (Comparative Examples 1 to 4), and each test piece was placed above and below. A 25 mm position from both ends was clamped and fixed by test piece attachment chucks on both upper and lower sides.
The cross head, to which the upper test piece mounting chuck was fixed, was moved upward at a speed of 10 mm / min, and the force (gf) when the perforation was broken was measured. The above test was performed 5 times for each test piece, and the average value was calculated.
The results of Comparative Example 1 were used in Examples 1 to 5, and the results of Comparative Example 2 were used in Examples 6 to 10.
Moreover, Examples 11 to 15 incorporated the results of Comparative Example 3, and Examples 16 to 20 incorporated the results of Comparative Example 4.

(Calculation of finger pressing force when cutting perforations)
Using the calculation results of the outer static friction coefficient (μs1) and the inner static friction coefficient (μs2) and the measurement results of the perforation breaking strength (gf) for the test pieces of Examples 1 to 20 and Comparative Examples 1 to 4, An estimated value of the finger pressing force (gf) when the perforations were cut open was calculated according to the following formula (1).
Finger pressing force when cutting perforations (P) =
Perforation strength (F) / (outer static friction coefficient-inner static friction coefficient) Equation (1)

[Evaluation]
As shown in Table 1, the polyethylene film alone has outer static friction coefficients (μs1) of 0.87 (Comparative Example 1) and 0.61 (Comparative Example 2) in which the outer surface of the package and the finger are in contact with each other. As a non-slip film, 0.2 mm thick synthetic rubber, 1 mm thick polyurethane, 1 mm thick synthetic rubber, 5 mm thick synthetic rubber, and 3 mm thick silicone rubber are attached respectively, and there is outside static friction. The coefficients (μs1) were 2.14, 2.06, 1.64, 1.23 and 1.73, respectively (Examples 1 to 5 and Examples 6 to 10).
In addition, when the estimated value of the pressing force of the finger when cutting the perforations; P (gf) was calculated, it was 797 (Comparative Example 1) and 850 (Comparative Example 2) for the polyethylene film alone. As a non-slip film, 0.2 mm thick synthetic rubber, 1 mm thick polyurethane, 1 mm thick synthetic rubber, 5 mm thick synthetic rubber, and 3 mm thick silicone rubber are applied respectively, and the fingers are pressed. The force; P (gf) was 267, 279, 362, 510, 340 in Examples 1-5, and 147, 154, 201, 289, 189 in Examples 6-10 (see Table 1).
That is, by sticking the non-slip film to the polyethylene film, the outer static friction coefficient is increased, and as a result, the pressing force of the finger when cutting the perforations is considered to be small (Comparative Examples 1 and 2; Examples 1-5, Examples 6-10).

Similarly, the non-axially stretched polypropylene film alone has outer static friction coefficients (μs1) of 1.26 (Comparative Example 3) and 1.09 (Comparative Example 4), while the non-slip film has a thickness of 0.2 mm. When the synthetic rubber, 1 mm thick polyurethane, 1 mm thick synthetic rubber, 5 mm thick synthetic rubber, and 3 mm thick silicone rubber are attached, the outer static friction coefficient (μs1) is 2.14, 2.06, and 1.64, respectively. , 1.23, 1.73 (Examples 11 to 15 and Examples 16 to 20).
In addition, when the estimated value of the pressing force of the finger when opening the perforations; P (gf) was calculated, it was 708 (Comparative Example 3) and 576 (Comparative Example 4) for the non-axially oriented polypropylene film alone. On the other hand, when a synthetic rubber having a thickness of 0.2 mm, a polyurethane having a thickness of 1 mm, a synthetic rubber having a thickness of 1 mm, a synthetic rubber having a thickness of 5 mm, and a silicone rubber having a thickness of 3 mm are attached as the non-slip films, respectively, The pressing force of the finger; P (gf) was 358, 375, 498, 732, 465 in Examples 11 to 15, and 252, 264, 345, 492, 323 in Examples 16 to 20 (Table 1). reference).
That is, by sticking the non-slip film to the non-axially stretched polypropylene film, the outer static friction coefficient is increased, and as a result, it is considered that the pressing force of the finger when cutting the perforations is reduced (Comparative Example 3, 4, Examples 11-15, Examples 16-20).

[Sensory test]
Samples of pocket tissues corresponding to Examples 1 to 20 and Comparative Examples 1 to 4 were prepared, and a sensory evaluation was conducted on the ease of opening the individual wrapping film of the samples. As the contents of this sample, "Elleair luxury moisturizing tissue" manufactured by Daio Paper Co., Ltd. was used.
The sensory evaluation test was conducted in a constant temperature and constant humidity chamber under the conditions of a temperature of 23 ° C. and a humidity of 50%, and was evaluated in the following four stages.
◎: Very easy to open (It requires no force and can be opened without breaking the tissue paper inside.)
○ ； Easy to open (a little force is required, but it can be opened without breaking the tissue paper inside)
△: A little difficult to open (although it requires some force, it is not enough to tear the tissue paper inside)
×: Difficult to open (it takes force to open and the tissue paper inside may break)
The pressing force (P (gf)) when opening the perforations is preferably 100 gf or more and 450 gf or less.
As is clear from the results shown in Table 1, if the pressing force (P (gf)) of the finger was 450 gf or less, the perforations of the individual wrapping film could be easily cut open.
In particular, if the finger pressing force (P (gf)) was 300 gf or less, the perforations could be cut open more easily.
If the pressing force (P (gf)) at the time of cutting the perforations is less than 100 gf, the timing is not desired by the manufacturer or the user (for example, during manufacturing, during product transportation, or during storage in a bag). ), The perforation is cut open and there is a problem.

In order to make it easier to open the perforations in the individual packaging film of the pocket tissue, the perforation strength may be lowered, but if the perforation strength is simply weakened, the perforation lines on the line will be used when manufacturing the pocket tissue. May be broken, or when the pocket tissue is put in a corrugated case and transported, the perforation may be broken due to the weight of the lower part of the corrugated case, so some perforation strength is required. .
On the other hand, if the perforation strength is made too strong, there is a problem that the tissue (particularly a soft moisturizing tissue) in the individual wrapping film is torn when the perforation is opened.
Therefore, as in the present embodiment, by providing a non-slip region in a portion where a finger touches when opening the perforations of the pocket tissue, a pocket tissue that is easy to open and is less likely to cause defective products is realized.

As described above, according to the pocket tissue 100 of the first embodiment, the inner side surface of the perforation-constituting surface portion 1a facing the tissue paper P is made relatively slippery, while the outer side opposite to the inner side surface. Since two non-slip regions 2 which are relatively hard to slip are provided on the side surface so as to sandwich the perforation M in a direction intersecting the extending direction thereof, when the perforation M is cut open. The outer surface of the perforation-constituting surface portion 1a of the first package 1 held by the user becomes less slippery, and the perforations M can be cut open with a weaker force. That is, since the outer side surface of the perforation-constituting surface portion 1a becomes less slippery, when the perforation M is cut open, the pocket tissue 100 has two edge portions in the left-right direction centering on the perforation M (two edges on the front and rear sides). It becomes difficult for the tissue paper P to bend so that they come close to each other, and even if the tissue paper P overlaps only under the perforations M, the tissue paper P can be made difficult to tear. In addition, it is not necessary to change the perforation M into a shape that facilitates opening, and there is no risk of breaking the pocket tissue 100 during manufacturing or transportation.
In this way, the perforations M of the pocket tissue 100 can be cut open with a weaker force, and the tissue paper P can be prevented from being torn when the perforations M are cut open.

  Further, since the two non-slip regions 2 and 2 are formed by sticking the non-slip film 2a formed of a relatively non-slip material on the outer surface of the perforation-constituting surface portion 1a. The slip-resistant region 2 can be formed only by attaching the slip-resistant film 2a to the outer surface of the first package 1. Further, by forming the first package 1 using the material used for the package of the general pocket tissue 100, it is not necessary to use a special film or the like for manufacturing the first package 1, and The cost of the pocket tissue 100 can be reduced.

  Further, the two non-slip regions 2, 2 are provided on the outer side surface of the perforation-constituting surface portion 1a so as to face each other so as to sandwich the substantially central portion in the extending direction of the perforation M, so that the user's It is possible to properly hold the outer side surface of the perforation-constituting surface portion 1a of the first package 1 by using each finger (for example, thumb) of both hands. In particular, for example, by providing the two non-slip regions 2 and 2 on the outer side surface of the perforation-constituting surface portion 1a substantially parallel to the extending direction of the perforations M, the perforation configuration of the first package 1 is provided. The degree of freedom of the user's holding position of the outer surface of the surface portion 1a can be further improved.

  In the first embodiment described above, the non-slip region 2 is provided on the outer side surface of the perforation-constituting surface portion 1a of the first package 1, but, for example, the perforation-constituting surface portion 1a of the first packaging body 1 faces The non-slip region 2 may also be provided on the lower surface portion. That is, when the perforation M is cut open while pressing the perforation forming surface 1a with the thumbs of both hands, for example, the index finger and the middle finger are in contact with the lower surface of the first package 1. Therefore, by providing the non-slip region 2 on the lower surface portion, the index finger and the middle finger are less likely to slip, and the perforation M can be cut open with a weaker force.

[Embodiment 2]
FIG. 6 is a perspective view showing a pocket tissue 200 of Embodiment 2 to which the present invention is applied, and FIG. 7 is a sectional view of the pocket tissue 200 taken along the line VII-VII of FIG.
The pocket tissue 200 of the second embodiment has substantially the same configuration as the pocket tissue 100 of the first embodiment except for the points described in detail below, and detailed description thereof will be omitted.

  As shown in FIGS. 6 and 7, the pocket tissue 200 of the second embodiment has a second package 201 having a two-layer structure having an inner layer portion 201a and an outer layer portion 201b.

  The second packaging body 201 is formed in a substantially rectangular parallelepiped shape similarly to the first packaging body 1 of the first embodiment, and the upper surface of the second packaging body 201 constitutes the perforation forming surface portion 1a. Similar to the first embodiment, the perforation-constituting surface portion 1a has a linear perforation M that extends along the left-right direction (longitudinal direction) of the second packaging body 201 at a substantially central portion in the front-rear direction. It is provided.

The inner layer portion 201a has substantially the same configuration as the first package 1 of the first embodiment, and the tissue paper P is stored inside the inner layer portion 201a. In addition, the entire inner surface of the inner layer portion 201a is relatively slippery as in the first package 1 of the first embodiment.
It should be noted that not only the entire inner side surface of the inner layer portion 201a, but at least the inner side surface of the inner layer portion 201a corresponding to the perforation-constituting surface portion 1a may be relatively slippery.

  The outer layer portion 201b is attached to the outside of the inner layer portion 201a. Further, the outer surface of the outer layer portion 201b is made relatively slippery with respect to the inner surface of the inner layer portion 201a. Specifically, the outer layer portion 201b is formed using a relatively non-slip material such as synthetic rubber, polyurethane resin, or non-slip non-axially stretched polypropylene film. For example, the coefficient of static friction between the outer surface of the outer layer portion 201b and the finger pressing the outer layer portion 201b to open the perforations M is preferably 1.2 or more, more preferably 1.5 or more. .

Note that the non-axially stretched polypropylene film having slip resistance is formed by blending a known slip agent with the non-axially stretched film. Examples of slip agents include hydrocarbon-based slip agents such as liquid paraffin and polyethylene wax, metal soap-based slip agents such as calcium stearate and magnesium stearate, oleic acid amide, erucic acid amide, behenic acid amide, and ethylenebisolein. Examples thereof include amide-based slip agents such as acid amides and ethylene bis-erucic acid amides. However, the examples are not limited to these, and may be appropriately changed.
Further, examples of the compounding method of the slip agent include a master batch method and a pellet blending method immediately before film formation. However, the method is not limited to these and may be appropriately changed.

The two front and rear regions sandwiching the perforation M of the perforation-constituting surface portion 1a of the outer layer portion 201b in the direction intersecting with the extending direction form two non-slip regions 2 and 2 which are relatively hard to slip. ing.
It is sufficient that at least the outer surface of the outer layer portion 201b corresponding to the perforation-constituting surface portion 1a is relatively slippery, not the entire outer surface of the outer layer portion 201b.

Even with such a configuration, according to the pocket tissue 200 of the second embodiment, the perforation-constituting surface portion of the second packaging body 201 that is held by the user when the perforation M is cut open as in the first embodiment. The outer side surface of 1a becomes less slippery, the perforation M can be cut open with a weaker force, and tearing of the tissue paper P when cutting the perforation M can be suppressed.
Moreover, since the two non-slip regions 2 and 2 are formed using a relatively non-slip material, the non-slip film 2a is attached to the outer surface of the package as in the first embodiment. The work to do is unnecessary. In particular, by making the entire outer surface of the outer layer portion 201b of the second package 201 relatively slippery, for example, when the perforation M is cut open, the two non-slip regions 2 and 2 which the thumbs of both hands contact can be easily formed. In addition to the above structure, the lower surface of the second packaging body 201, which is in contact with the index finger and the middle finger, becomes difficult to slip, and the perforation M can be cut open with a weaker force.

The present invention is not limited to the first and second embodiments, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, as the perforations M, those formed so as to extend in the left-right direction at a substantially central portion in the front-rear direction of the perforation-constituting surface portion 1a are illustrated, but the position and shape of the perforations M are merely examples. The present invention is not limited to this and can be arbitrarily changed. Further, the arrangement and the like of the two non-slip regions 2, 2 can be arbitrarily changed according to the position and shape of the perforations M.

  Further, in the above-described first and second embodiments, the pocket tissue 100, 200 has been described as an example of the sanitary thin paper product, but the sanitary thin paper is not limited to this example, and the sanitary thin paper is provided inside the packaging body. Can be arbitrarily changed as long as it is accommodated.

100,200 Pocket tissue (sanitary tissue paper products)
1 1st package 1a Perforation composition surface part 2 Nonslippery area 2a Nonslippery film 201 2nd package 201a Inner layer 201b Outer layer M Perforation P Tissue paper (sanitary thin paper)

Claims (5)

A package in which sanitary thin paper is housed inside,
Extending in a predetermined direction, having a perforation constituting surface portion provided with perforations forming the outlet of the sanitary thin paper by being cut open,
The perforated surface portion is
The inner side surface facing the sanitary thin paper is made relatively slippery, while the outer side surface opposite to the inner side surface sandwiches the perforation in a direction intersecting the extending direction, Is provided with two non-slip areas that are made difficult to slip,
The two non-slip regions are formed by sticking a non-slip film formed using a relatively non-slip material to the outer surface of the perforation structure surface portion,
A packaging body in which the perforation is cut open by causing a finger pressing force (P) calculated by the formula (1) to act on the two non-slip regions in a range of 100 gf to 375 gf.
Finger pressing force when cutting perforations (P) =
Perforation strength (F) / (Outer static friction coefficient-Inner static friction coefficient) (1) A hygienic thin paper sheet is housed inside, and has a two-layer structure comprising an inner layer portion and an outer layer portion,
Extending in a predetermined direction, having a perforation constituting surface portion provided with perforations forming the outlet of the sanitary thin paper by being cut open,
The perforated surface portion is
The inner surface of the inner layer portion facing the sanitary thin paper is made relatively slippery, while the outer surface of the outer layer portion opposite to the inner surface has the perforation in the extending direction. Two non-slip areas that are made relatively non-slip are provided so as to be sandwiched in the intersecting direction,
A packaging body in which the perforation is cut open by causing a finger pressing force (P) calculated by the formula (1) to act on the two non-slip regions in a range of 100 gf to 375 gf.
Finger pressing force when cutting perforations (P) =
Perforation strength (F) / (Outer static friction coefficient-Inner static friction coefficient) (1) The two flame slipping region claim 1, characterized in that the outer surface of the perforation structure surface, thus provided to face so as to sandwich the substantially central portion in the extending direction of the perforation The package described in. The perforation is formed so as to extend in a predetermined one direction on the perforation constituting surface portion,
The package according to claim 1 , wherein the two non-slip regions are provided on the outer side surface of the perforation-constituting surface portion substantially parallel to the extending direction of the perforations. The sanitary thin paper is accommodated inside the packaging body according to any one of claims 1 to 5 ,
A sanitary tissue paper product, wherein the sanitary tissue paper contains a moisturizing agent.

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