JP7317775B2 - film wrapped tissue - Google Patents

Description

TECHNICAL FIELD The present invention relates to a film-wrapped tissue in which a bundle of tissue papers in which tissue papers are folded and stacked is wrapped in a flexible wrapping film.

Tissue paper generally has a laminated structure in which a plurality of sheets are stacked. Conventionally, for example, in Japan, tissue paper is mainly used for facial purposes such as chewing the mouth and wiping around the mouth during meals, so it is called 2-ply with excellent softness and flexibility. Laminated sheets are the mainstream (for example, Patent Documents 1 and 2 below).

On the other hand, in Asian countries other than Japan, Europe and the United States, tissue paper is frequently used not only for facial use but also for wiping the skin other than the face and wiping articles. Demand is high for 3-ply and 4-ply tissue with a large number of stacked sheets. In addition, such multi-ply tissue paper having more than two plies has a large mass per set and high rigidity.

On the other hand, the tissue paper is used in the form of a tissue paper package in which a bundle of multiple stacked sets is packaged. As the tissue paper package, there is known a tissue paper package, which is also called a film-wrapped tissue, in which a bundle of tissue paper is wrapped in a resin-made flexible packaging film. As this film-wrapped tissue, a portable one called pocket tissue is well known, but there is a box tissue called a paper storage box called a carton box in which a bundle of tissue paper is enclosed ( hereinafter also referred to as box goods), there are some that are used stationary or used as refills for bundles of box goods.

Such film-wrapped tissues used for stationary use are of a so-called pop-up type in which when the uppermost sheet is pulled out, a part of the next sheet is pulled out. This film-wrapped tissue is advantageous in terms of transportation cost and portability due to reduction in packaging materials and compactness compared to boxed goods.

On the other hand, in the conventional film-wrapped tissue, the perforation for forming the outlet formed on the upper surface is generally a simple linear slit-type perforation in order to reduce the cost. rice field.

However, the slit-shaped outlet formed by opening such perforations has a problem that, especially when the length of the slit is increased, the sheets fall inside when the number of sheets remaining inside becomes small. Also, if the slit length is shortened, it is difficult to pull out one sheet from the film at the beginning after opening, and the pull-out resistance at the beginning of use is too high, so the outer film is lifted when the sheet is pulled out. was there.

Therefore, in order to solve such problems, perforations for forming the outlet are arranged in an elongated annular shape extending in the longitudinal direction by a die-cutting technique such as die-cutting, so that the opening of the outlet is widened in the depth direction. A certain broadening has been carried out (Patent Documents 1 and 2 below).

However, conventional elongated annular outlets are designed to be suitable for two-ply tissue paper with excellent softness and flexibility. 15 to 28%. However, such outlets that are mainly suitable for 2-ply tissue paper are not necessarily suitable for 3-ply or 4-ply tissue paper, which has relatively high rigidity. In particular, 3-ply and 4-ply tissue paper is more rigid than 2-ply tissue paper, so it is necessary to widen the width of the opening to make it easier to take out. Since it is different from 2-ply tissue paper, it is difficult to design like 2-ply tissue paper.

On the other hand, hygiene concepts and lifestyles differ from country to country and region to country. Many people think that a die-cut type opening area having a width of 20 mm is too large and foreign matter is likely to enter, and is not preferable. Considering such a demand, it is preferable to narrow the opening area.

JP 2018-052559 A JP 2018-058654 A

Therefore, in view of the above problems, the main object of the present invention is to give an impression that foreign substances are difficult to mix, to be used hygienically, to be easy to open, to have a high mass per set, and to have high rigidity. To provide a film-wrapped tissue from which even the above tissue paper can be easily taken out.

Means for solving the above problems are as follows.

The first means is
A film-wrapped tissue in which a bundle of tissue paper is wrapped in a flexible resin-made wrapping film,
The tissue paper is a 3-ply or 4-ply tissue paper having a basis weight per ply of 12.5 to 22.5 g/m ² and a paper thickness of 185 to 285 μm,
Having an outlet forming part on the upper surface,
The outlet-forming portion is formed by annularly arranging easy-cleavage lines in which cut portions and non-cut portions are alternately arranged, and extends in the width direction at the center portion in the depth direction of the upper surface and extends at both ends. The part has an elongated shape that protrudes outward,
The length in the width direction of the outlet forming portion is 60 to 75% of the width of the top surface, and the maximum length in the depth direction is 6 to 15 times the length in the depth direction of the top surface. %,
A film-wrapped tissue characterized by:

The second means is
The B value measured by the KES-FB2-S bending tester of the packaging film of the upper surface portion is 0.093 gf×cm ² /cm or less, and the 2HB value is 0.033 gf×cm/cm or less,
The tissue paper has a B value of 0.010 to 0.022 gf×cm ² /cm and a 2HB value of 0.012 to 0.029 gf×cm/cm as measured by a KES-FB2-S bending tester. ,
It is a film-wrapped tissue according to the first means.

A third way is
The outlet forming portion communicates with a narrow portion extending in the longitudinal direction at the central portion in the width direction and an end portion of the narrow portion, and widens gradually outward in the width direction as it separates from the narrow portion. The film-wrapped tissue according to the first or second means has a shape having a portion and a convex portion which is continuous with the widened portion and bulges outward in the width direction.

A fourth means is
The narrow portion has a length in the width direction that is 35 to 65% of the length of the top surface, and a length in the depth direction that is 3 to 7% of the length in the depth direction of the top surface. It is a film-wrapped tissue according to the third means.

A fifth means is
According to the third means, at least one end of the outlet forming portion is a cut portion that continues from the middle of the widened portion on one side in the depth direction to a position beyond the outer end of the convex portion. It is a film-wrapped tissue.

A sixth means is
In the outlet forming portion, the arrangement of the cut portion and the non-cut portion is different at each end in the width direction, and the cut portion is positioned at the outer side end of at least one end. It is a film-wrapped tissue according to the first to fifth means.

The seventh measure is
The film-wrapped tissue paper is obtained by overlapping wrapping a bundle of approximately rectangular parallelepiped tissue paper in which a plurality of tissue papers are folded and stacked. A film-wrapped tissue according to any one of the above first to sixth means, wherein the end face is positioned and the adhesive part where the packaging films are laminated and adhered to each other is positioned facing one of the longitudinal sides.

According to the present invention, it gives an impression that foreign matter is difficult to mix, can be used hygienically, is excellent in unsealability, has a high mass per set, and is highly rigid. Even tissue paper with three or more plies can be taken out. An easy-to-clean, film-wrapped tissue is provided.

It is a perspective view for explaining a film-wrapped tissue according to the present invention. It is a perspective view for demonstrating the packaging structure of overlap packaging. FIG. 4 is a perspective view for explaining a tissue paper bundle; It is a top view for demonstrating an outlet formation part. It is a top view for demonstrating other outlet formation parts. It is a figure for demonstrating another outlet formation part. It is a figure for demonstrating arrangement|positioning of another cut part and non-cut part of another outlet formation part. FIG. 4 is a diagram for explaining the B value and 2HB value of pure bending stiffness according to the present invention;

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. FIG. It should be noted that directions such as the up-down direction and the left-right direction in the present invention and this specification may be appropriately changed depending on the orientation of the film-wrapped tissue, and do not mean absolute directions.

A film-wrapped tissue 1 of this embodiment is a bundle 3 of a plurality of sets of tissue paper 2 folded and wrapped in a flexible wrapping film 4 . This film-wrapped tissue 1 is obtained by pillow-wrapping or overlap-wrapping a bundle 3, and has an outlet forming portion 5 on the upper surface 4C. Preferably, it has a substantially hexahedral shape having a lower surface 4D facing the upper surface 4C, and an end surface 4A and a long side surface 4B located between the upper surface 4C and the lower surface 4D. More preferably, the bundle 3 is overlapped. It is packaged.

Overwrap packaging is a form of packaging that is also called caramel packaging or double packaging. As shown particularly in FIGS. The part 4X that overlaps in the winding direction is adhered by a fusion process or an adhesive, and the part 4Y that extends beyond the bundle 3 is attached to the opposite end surface of the bundle. From the vicinity of the two edges, the bundle 3 is folded toward the end face side, and at least the tip edges of the substantially triangular or substantially trapezoidal pieces formed at that time are overlapped with each other and adhered by a fusion process or an adhesive, This is a packaging mode in which the cylinder opening 4Z is sealed to form the end surface 4A.

Since the end surface 4A of this overlap packaging has a substantially planar shape, the exterior made of the packaging film 4 has a substantially rectangular parallelepiped shape that is closer to a box. In addition, since the end surface 4A is formed by adhering a plurality of layers of the packaging film 4, the rigidity is high, and the shape of a substantially rectangular parallelepiped is easily maintained because the end surface 4A is not easily crushed in the vertical direction. Furthermore, as in the illustrated embodiment, if the portion 4X that overlaps in the roll-in direction, which is bonded by a fusion process or an adhesive, is formed so as to be long side surfaces instead of the top and bottom surfaces, the gap between the top surface and the bottom surface can be reduced. Since the rigidity of the three side faces is high, it is more difficult to be crushed in the vertical direction, and the substantially rectangular parallelepiped shape is easily maintained.

The tissue paper stack 3 is a so-called pop-up type stack, as shown in FIG. In this bundle, a plurality of tissue papers 2 are folded and laminated such that the tissue paper 2 is folded in two and the folded pieces 2B of the other tissue papers 2 positioned above and below are positioned in the folded inner side 2A. , a pair of long side surfaces 3B on which the folded edges 2C of each tissue paper 2 are arranged, and a pair of short side surfaces 3A on which the folded edges 2C are not arranged, and a pair of the short side surfaces 3A and the long side surfaces 3B are connected to each other. It has a substantially rectangular parallelepiped shape with planes (upper and lower surfaces) 3C.

The number of sets of the tissue papers 2 constituting the bundle 3 is not limited in the present invention, but is 30 to 240 sets with 3 plies (three plies stacked) or 4 plies (four plies stacked) as one set. The size of the bundle 3 is also not limited, but a bundle of 100 sets of tissue paper is approximately 40 to 50 mm in height, 100 to 200 mm in the longitudinal direction (width), and 90 to 120 mm in the transverse direction (depth). As shown in this shape, the film-wrapped tissue 1 according to the present invention is a portable tissue having a height of about 10 mm and containing about ten to twelve sets of tissue paper, which is called a so-called pocket tissue. not for

This film-wrapped tissue 1 is positioned so that the end surface 4A formed by sealing the cylinder opening 4Z faces the short side surface 3A of the bundle 3, and faces the one long side surface 3B. An adhesive part 4X where the packaging films are laminated and bonded together is positioned, and an outlet forming part 5 is formed at a position facing the uppermost tissue paper 2 of the bundle 3 of the packaging films 4. - 特許庁The filling rate of the bundle 3 is not necessarily limited, but it is desirable that the gap between the bundle and the packaging film is in the range of 0 to 5 mm. The bundle may be wrapped in a slightly compressed state in the vertical direction, the depth direction, and the width direction with the wrapping film. It may be compressed in all directions, or may be compressed in any one or two directions. However, the degree of compression should not be so high as to excessively affect the drawability.

As shown in FIGS. 4 to 6, the outlet forming portion 5 has an easy-cleavage line 50 in which cut portions 50C and uncut portions 50U, also called tie portions, are alternately arranged. It extends along the width direction at the central portion in the depth direction of the upper surface 4C, and in particular, both end portions 5A and 5B in the width direction have an elongated shape that protrudes outward. .
The outlet-forming portion 5 splits the easy-cleavage line 50 and separates and removes the range surrounded by the easy-cleavage line 50, thereby pulling out the tissue paper 2 onto the upper surface 4C of the film-wrapped tissue 1. An opening serving as an outlet for the is formed. When the uppermost tissue paper 2 of the bundle 3 is pulled out by forming the outlet, a part of the next tissue paper positioned immediately below is exposed from the outlet.

Examples of the easy tear line 50 include, but are not limited to, perforations, slit cuts with uncut portions (non-cut portions), and the like. A slit cut provided with perforations and non-cut portions may be partially divided and arranged. The easy-cleavage line can be formed by die cutting, for example. The type of perforation is not limited. Ordinary perforations in which the cut portion is a straight line, micro perforation in which the cut portion is a hole, and perforations in which the shape of the cut portion is Y-shaped, approximately L-shaped, or <-shaped can be exemplified. Preferred are normal perforations. A slit cut is a portion obtained by cutting a film into a slit shape, and by having a non-cut portion, the non-cut portion and the cut portion are arranged alternately. A slit cut having a non-cut portion may be simply referred to as a slit cut. Slit cuts having perforations and non-cut portions can be formed by die-cutting simultaneously and continuously through the non-cut portions. Therefore, although it may not be distinguished, in the present invention, a slit cut is referred to as a slit cut when the cut portions are less than three pitches, that is, when the cut portions of the same length do not continue three times. In general, slit cuts are formed so that the length of the cut portion is longer than the perforations.

In addition, the cut tie ratio in the slit cut having perforations and non-cut portions forming the outlet forming portion 5 is determined at an appropriate interval depending on the ease of breaking of the film to be used, but the length of the cut portion is The length of the non-cut portion (tie portion or uncut portion) can be appropriately designed within the range of 0.8 mm to 20.0 mm and 0.3 mm to 5.0 mm.

Each tissue paper 2 constituting the bundle 3 is said to have a 3-ply or 4-ply laminated structure in which 3 or 4 sheets are stacked. The basis weight per ply of this tissue paper 2 is 12.5 to 22.5 g/m ² . Desirably, the mass per set is 1.2 to 2.4 g. Tissue paper with 3-ply or 4-ply sheets of the above basis weight has "flexibility and softness" that can be used for facial applications, but it is easy to make it "firmly thick and hard to tear", and it is not only for facial applications but also for wiping articles. It is also easy to use. Furthermore, the paper thickness per set of this tissue paper is 185 to 285 μm. With the above number of plies and basis weight, if the paper thickness is within the above range, there is cushioning in the thickness direction, it is easy to feel the softness, and it is slightly thicker than the two-ply facial application, and it is not skin. It is easy to give the impression that it is difficult to tear when cleaning items such as .

In addition, the said basis weight means the thing by the measuring method of JIS P 8124 (1998). The grammage per ply is calculated by grammage=sheet weight per set/(sheet area×number of plies). In addition, the thickness of the paper was determined by sufficiently conditioning the test piece under the conditions of JIS P 8111 (1998) and then using a dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho Co., Ltd.) under the same conditions. and the value measured in the state of multiple plies using an equivalent machine.

Moreover, the tissue paper 2 according to the present invention is a dry type, not a so-called wet type that is impregnated with a chemical solution. Therefore, the bundle 3 formed by the tissue paper 2 contains a lot of air. The dry type tissue paper 2 also includes a chemical solution application type in which a chemical solution such as a moisturizing component that increases moisture by absorbing moisture such as polyol typified by glycerin is applied. good too.

NBKP and LBKP are blended as the raw material pulp of the thin paper that constitutes the tissue paper 2 . Waste paper pulp may be blended, but in terms of texture, etc., it is preferable to consist only of NBKP and LBKP. The mixing ratio is preferably NBKP:LBKP=20:80-80:20, particularly preferably NBKP:LBKP=30:70-60:40.

Here, the outlet forming portion 5 according to the present invention characteristically has a length L1 in the width direction that is 60 to 80% of the width L2 of the upper surface 4C of the film-wrapped tissue 1, The maximum length L3 in the depth direction is 6 to 15% of the length L4 in the depth direction of the upper surface 4C of the film-wrapped tissue 1. Preferably, the length in the width direction is 63 to 73% of the width of the upper surface of the bundle, and the maximum length in the depth direction is 6 to 12% of the length in the depth direction of the upper surface of the bundle. is. The minimum length in the depth direction is not limited, but since the outlet forming portion 5 according to the present invention is formed by arranging the easy-cleavage lines in a ring as described above, at least one mere perforation is required. It is not a slit as formed by dehiscence, but a width between two simple dehiscence lines spaced apart in the depth direction. Such outlet-forming portion 5 is excellent in unsealability because the film within the outlet-forming portion 5 can be separated and removed by continuously pulling from one end portion 5A toward the other end portion 5B. Furthermore, the 3- to 4-ply tissue paper with the above basis weight and paper thickness has higher rigidity than the 2-ply tissue paper mainly intended for facial use, but the length L1 in the width direction and the depth direction with respect to the upper surface 4C The extraction opening formed by the extraction opening forming portion 5 having the maximum length L3 within the above range allows the tissue paper 2 to be drawn out smoothly. In addition, since the length in the depth direction with respect to the upper surface 4C is considerably shorter than that of the conventional one, it gives the impression that foreign matter is less likely to enter and can be used hygienically.

In addition, the outlet forming portion 5 has an elongated shape in which both end portions 5A and 5B thereof are convex outward, so that one end can be easily grasped, and the one end portion 5A and the other end portion can be easily grasped. It is easy to continuously pull from 5B or the other end 5B toward the one end 5A. In addition, when both ends 5A and 5B are outwardly convex in this way, the root portions of both ends of the tissue paper 2, which are partially exposed from the outlet, are wrapped along the convex portions. It becomes easy to stand up because it transforms into , and it becomes difficult to fall inside. As a specific shape in which both ends 5A and 5B are outwardly convex, as shown in FIGS. A shape that is curved so as to protrude outward can be mentioned. In addition, as shown in FIG. 6, the easy-cleavage lines located at the longitudinal ends 5A and 5B may be arranged in a V-shape, a wedge-shape, or a W-shape that protrude outward in the longitudinal direction. be done.

On the other hand, in the film-wrapped tissue 1 according to the present embodiment, in particular, the overlap-wrapped tissue 1 has a structure in which the tissue paper 2 is laminated in the direction in which the highly rigid end surface 4A and the adhesive portion 4X stand up. Even if a compressive force is applied from the stacking direction (vertical direction) of the bundle 3, the bundle 3 is difficult to be compressed, and the fluffy feeling is difficult to deteriorate. Furthermore, since the packaging film in the film-wrapped tissue 1 is flexible, when the tissue paper 2 is taken out, the packaging film 4 at the position 4C of the upper surface 4C may be pulled upward by the resistance and deformed or distorted. In particular, the periphery of the outlet, which is an opening formed by tearing and removing the area surrounded by the easy-cleavage lines 50, is easily deformed. However, the portion facing the short side surface 3A of the bundle 3 is the end surface 4A, and the position facing one of the long side surfaces 3B is the adhesive portion 4X. In terms of shape, the packaging film at the upper surface position is less likely to deform and easily maintained in a flat shape compared to pillow packaging or the like. As a result, the outlet, which is an opening formed by splitting the outlet-forming portion 5, is also less likely to be distorted due to deformation. This resistance to distortion makes the effect of narrowing the maximum length L1 of the outlet forming portion 5 in the depth direction more pronounced, making it easier to take out the tissue papers one by one in a particularly stable manner.

On the other hand, in the film-wrapped tissue 1 according to the present invention, the B value measured by the KES-FB2-S bending tester of at least the upper surface 4C portion of the wrapping film 4 is 0.085 gf×cm ² /cm or less, and 2HB A value of 0.030 gf×cm/cm or less is desirable. In addition to the packaging film 4, the tissue paper 2 has a B value of 0.013 to 0.020 gfcm ² /cm and a 2HB value of 0.013 to 0.020 gfcm 2 /cm as measured by a KES-FB2-S bending tester. 018 to 0.028 gf×cm/cm is desirable. In the configuration of the outlet forming portion 5, when the rigidity of the packaging film 4 and the tissue paper 2 is the above combination, it is easy to form the outlet particularly in the packaging film 4, and in the tissue paper 2, It has a firm feel, and further, combined with the configuration of the maximum depth and the length in the width direction of the outlet forming portion 5, the tissue paper 2 can be taken out particularly well. The B value and 2HB value of the packaging film are the average values obtained by measuring the bending stiffness in the vertical direction of the film three times, and the B value and 2HB value of the tissue paper are the bending stiffness in the horizontal direction of the paper. It is the average value of the measurements. The direction of measurement of the packaging film and the tissue paper was set according to the deformation direction of the packaging film and the tissue paper when the tissue paper was taken out.

When measuring with this KES-FB2-S bending tester, a sample that has been conditioned for 3 hours or more in a constant temperature and humidity chamber at 23°C and 50% is used, the size of the sample is 100 mm in width, and the number of measurements is N = 3. , the average value of which is taken as the measured value. The measurement conditions are as follows.
SENS: 4
Environmental temperature: 20±1°C,
Environmental Humidity: 60±1%
Bending speed: SET (0.5 cm ^-1 /sec)
Curvature: SET (±2.5 cm ^-1 )

Here, as shown in FIG. 7, the B value measured by the KES-FB2-S bending tester is the slope of the bending curvature range of 0.5 to 1.5/-0.5 to -1.5. , 2HB is the hysteresis (width) in the range of bending curvature 1.0/−1.0. The B value correlates with the softness and stiffness that a person feels when bending an object. In addition, 2HB correlates with the tactile sensation of resilience (elasticity), the force with which a person tries to return an object after bending, and the greater the value of 2HB (the wider the width of 2HB), the less resilience. , and 2HB (the width of 2HB is narrower), the higher the recoverability. This KES-FB2-S bending tester differs from, for example, KES-FB2-A in the bending direction of the sample during measurement.

On the other hand, specific examples of the flexible resin-made packaging film 4 constituting the exterior of the film-wrapped tissue 1 include polyethylene film, polypropylene film, polyester film, polyethylene terephthalate film, nylon film, vinylidene chloride film, ethylene vinyl Examples include monolayer films of alcohol copolymers, appropriately laminated laminate films containing these films, and gas barrier films obtained by subjecting these films to surface treatment such as aluminum vapor deposition. Biomass films derived from plant materials such as sugarcane, potato (starch), and corn can also be used. The use of such biomass films is desirable from the viewpoint of environmental protection.

Polypropylene film and polyethylene film are suitable from the viewpoint of cost. Moreover, the packaging film 4 may be a satin-finished film which is excellent in design and touch. The melting point of the film is preferably 150° C. or lower. The lower the melting point of the packaging film, the lower the heat-sealing treatment can be performed, but the practical lower limit is 80°C. Examples of polypropylene include unstretched polypropylene film (CPP), and examples of polyethylene film include linear low-density polyethylene film (LLDPE), low-density polyethylene film (LDPE), and medium-density polyethylene film (MDPE).

Furthermore, if an odorous item such as scented tissue paper is to be packaged, an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film, which are excellent in scent retention, is desirable. Even if it is a multi-layer resin film in which a polyethylene resin film or a polypropylene resin film is laminated on one or both sides of an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film to enhance the heat-sealing property. good.

The thickness of the packaging film 4 may be selected as appropriate, but the thickness measured according to JIS P 8118 (1998) is preferably 25 to 75 μm. If the thickness is 25 to 75 μm, it is easy to increase the rigidity of the end face 4A especially in the case of overlap packaging. This thickness can also be used for polypropylene films and polyethylene films. In addition, with such thickness and softness, the packaging film 4 is unlikely to be torn, and the tissue paper can easily be taken out easily, particularly in pop-up properties. In addition, the thickness was measured by sufficiently conditioning the humidity of the measurement sample under the conditions of JIS P 8111 (1998), and then using a dial thickness gauge (thickness measuring instrument) "PEACOCK G-1A type" (manufactured by Ozaki Seisakusho Co., Ltd.) or its equivalent. Measure using a machine.

Here, as shown in FIG. 5, a particularly preferable shape of the outlet forming portion 5 is as follows. A shape having a widened portion 52 that communicates with the end portion and gradually widens in the longitudinal direction as it separates from the narrow portion 51, and a curved portion 53 that is continuous with the widened portion 52 and bulges outward in the longitudinal direction. is desirable. In this case, the widthwise length L5 of the narrow portion 51 is 40 to 65% of the length of the upper surface, and the depthwise length L6 is the length of the upper surface in the depthwise direction. It should be 3-7% long. The specific length of the narrow portion 51 in the depth direction is preferably 8 mm or less, preferably 6 mm or less in the lateral direction.

5, the narrow width portion 51 near the edge 51A of the outlet formed in the shape of the outlet forming portion 5 shown in FIG. When the tissue paper 2 is pulled out, the edge piece is deformed in the direction in which it is pulled out, and the next exposed set of tissue paper 2 comes to be leaned and supported. This action is effectively exhibited particularly in the B value and 2HB value of the above packaging film and tissue paper.
In addition, the outlet formed by the outlet forming portion 5 allows the next tissue paper, which is partially exposed from the outlet following the tissue paper pulled out from the bundle 3, to extend along the edge of the curved portion 53 in the width direction. Since the edges are rolled, it is easy to deform into a highly upright shape. In particular, in the outlet forming portion 5 shown in FIG. 5, it is difficult for the tissue paper to fall into the internal space, which tends to occur in overlap packaging having a cuboid exterior.

Furthermore, the outlet forming portion 5 may be formed by slit-cutting with non-cut portions (also called uncut portions) at the longitudinal ends 5A and 5B, and may be formed by perforations between them. Alternatively, only one longitudinal end portion may be formed by slit cutting, and the other portion may be formed by perforations. The narrow portion and the widened portion may be formed by perforations, and the curved portion 53 may be formed by slit cutting in which an uncut portion is partially provided. One longitudinal end portion 5A may be formed by slit cutting, and the other longitudinal end portion 5B may be formed by perforations. In the outlet forming portion 5 according to the present invention, the intervals and lengths of the cut portion and the non-cut portion may be partially different. In that case, naturally, the cut tie ratio is also partially different. Even when the intervals and lengths of the cut portion and the non-cut portion are different, it is desirable to adjust the length of the cut portion and the length of the non-cut portion within the range described above.

Here, as described above, the outlet forming portion 5 according to the present invention has the longitudinal ends 5A and 5B that protrude outward, and the widthwise ends 5A and 5B The arrangement of the cut portion and the non-cut portion is different, and it is desirable that the cut portion is positioned at the outer side end of at least one end portion 5A or the other end portion 5B. The one end or the other end where the cut portion is located can be easily picked up, resulting in excellent opening operability. In this case, it is preferable that the one end where the cut portion is located is slit-cut so that the cut portion is slightly longer.

However, for example, if the packaging film 4 is a uniaxially stretched film that is stretched in a direction orthogonal to the longitudinal direction of the outlet forming portion or depending on the thickness of the film, the one end 5B may be pinched and the other end 5A may be stretched. If the uncut portion 50C at the end on the side of the end portion 5A exists, the uncut portion is not cut, and the packaging film starts from the uncut portion. 4 may tear. If there is such a risk, both ends in the longitudinal direction should be cut.

In particular, the take-out forming portion 5 communicates with the narrow portion 51 and the end portion of the narrow portion 51 as shown in FIG. If the shape has a widened portion 52 and a curved convex portion 53 that is continuous with the widened portion 52 and bulges outward in the width direction, as shown in FIG. At least one end (5A in FIGS. 5 and 7) of the outlet forming portion 5 extends from the middle of the widened portion 52A on one side in the depth direction to a position beyond the outer end 53t of the convex portion 53. It is desirable that L7 be a continuous cut portion 53C. By arranging the cut portion 53U in this manner, a range Z from one depth side to the outer side end at the end portion of the outlet forming portion 5 becomes a free piece as shown in FIG. 7(D). ), the area Z is pinched and turned over to facilitate the opening operation.

Furthermore, in the outlet formed by the preferred outlet forming portion according to the present invention, the width of the narrow portion ([D] in Table 1 below)/the maximum length in the depth direction of the outlet forming portion ( [A] in Table 1 below is preferably 3.5 to 20.0. The inventors of the present invention have found that the width of the narrow portion/the maximum length of the outlet-forming portion in the depth direction of the preferred outlet-forming portion according to the present invention affects the ease of taking out the tissue paper. It has been found that when the thickness is in the range, the tissue paper can be easily pulled out. When the ratio of width of the narrow portion/maximum length of the outlet forming portion in the depth direction is 3.5 or more, the maximum length of the outlet forming portion in the depth direction with respect to the width of the narrow portion is appropriate. In particular, the ability to hold the tissue paper at both ends of the outlet in the width direction is enhanced. Further, when it is 20.0 or less, the maximum length in the depth direction of the outlet forming portion is appropriate with respect to the width of the narrow portion, and the tissue paper supporting force at both ends in the width direction of the outlet is increased. , the ability to prevent the tissue paper exposed from the outlet from collapsing is enhanced.

In addition, in the outlet formed by the preferred outlet forming portion according to the present invention, the width of the outlet forming portion ([B] in Table 1 below)/the width L8 of the bulging convex portion ( The value of [E] in 1) is more than 4.0, and the value of the width of the narrow portion ([D] in Table 1 below/the width L8 of the bulging convex portion ([E] in Table 1 below) is 2.0. It is desirable that it is greater than 0. The present inventors have found that, in the preferred outlet forming portion according to the present invention, the maximum length in the depth direction of the outlet forming portion/the width L8 of the bulging convex portion and the width It has been found that both the width of the narrow portion and the width L8 of the bulging convex portion affect the ease of taking out the tissue paper, and particularly when both are in the above ranges, the ease of pulling out the tissue paper is improved. The value of the maximum length in the depth direction of the outlet forming portion/the width L6 of the bulging convex portion is more than 4.0, and the value of the width of the narrow portion/the width L8 of the bulging convex portion is more than 2.0. Then, the amount of deformation of the tissue paper partly exposed from the ejection port by the edge of the ejection port becomes an appropriate amount, so that the tissue paper can be pulled out smoothly.

Next, Examples 1 to 4 of the present invention and Comparative Example 1 were produced, and along with Conventional Examples 1 to 3, tests were carried out on the take-out properties of the first sheet, the number of depressions, and the unsealability.
For the "easiness of taking out the first sheet", the subjects actually used the samples according to each example and evaluated whether or not the first sheet was easy to take out. Values in the table are averages of N=10. The evaluation was based on a 5-point scale of 5 points for easy removal, 4 points for fairly easy removal, 3 points for neither, 2 points for slightly difficult removal, and 1 point for difficult removal.
As for the "number of times of depression", the number of times that depression actually occurred when the tissue paper was pulled out to the end was counted.
For "openability", subjects were asked to pick one end of each sample and pull it toward the other end to open the sample, and whether or not it was easy to open was evaluated. Values in the table are averages of N=10. The evaluation was made on a 5-point scale: easy to open 5 points, somewhat easy to open 4 points, neutral 3 points, slightly difficult to open 2 points, and difficult to open 1 point.
The shape of the outlet-forming portion in Examples 1, 2, 3, Conventional Example 1, and Comparative Example 2 has a narrow width portion, a wide width portion, and a bulging curved convex portion shown in FIG. , and the dimensions of each part are different. Moreover, Comparative Example 1 has the same shape as the shape shown in FIG. 4 without the narrow portion and the widened portion. Conventional Example 3 has a single perforation as the outlet forming portion and a slit as the outlet. Also, in each example and comparative example, the end on the unsealing start side was a cut portion. Particularly, in Examples 1 and 2, the cut portion and the non-cut portion at one end were arranged as shown in FIG. 7, and the range of the free piece Z was widened.
The B value and 2HB value of the packaging film and tissue paper were measured using a KES-FB2-S bending tester manufactured by Kato Tech Co., Ltd. under the above conditions.
Tables 1 and 2 below show the dimensions of the outlet forming part, the ratio of the upper surface to the length in the depth direction and the length in the width direction, the physical properties of the tissue paper, and the test results in each example. In Table 1, the width of the narrow width portion/the maximum length in the depth direction of the outlet forming portion is indicated by [D]/[A], and the width of the outlet forming portion/the width of the bulging convex portion is It is indicated by [B]/[E], and the width of the narrow portion/the width of the bulging convex portion is indicated by [D]/[E].

From Tables 1 and 2, it was confirmed that in Conventional Example 3, in which the outlet forming portion is a single perforation and the outlet is a slit, even the 2-ply soft tissue paper was depressed 15 times.
In addition, Conventional Example 2, which has a short length in the depth direction and a long length in the width direction, has a short length in the depth direction, so that it has an excellent hygienic impression, but the ease of taking out the first sheet is inferior to that of the examples. In particular, regarding the unsealability, it was very difficult to pick up the edge of the outlet forming part, and all the subjects evaluated it as 1 point that it was difficult to unseal.
In addition, since the two-ply conventional product 1 is longer in the depth direction than the embodiment, it gives an inferior hygienic impression. Also, although the length in the width direction is shorter than that of the embodiment, the number of times of depression is large.
From these results, the present embodiment is improved as compared with the conventional example.
Next, in the example according to the present invention, the ease of removing one sheet was evaluated as somewhat easy to take out, and the evaluation was that the ease of opening was excellent. Also, the number of drops is one in both cases, which is the minimum value in each example.
On the other hand, in Comparative Example 1, the evaluation is low although the length of the outlet forming portion in the depth direction is longer than that of the Example. Since the width direction is narrow, if the length in the depth direction is widened, a wide range of tissue paper will gather to come out from the outlet when pulling out, but 3-ply tissue paper has higher rigidity than 2-ply tissue paper, so If the length is excessively long, it will be clogged together with the width direction, and the removal property will be deteriorated.
In addition, in Examples 1 to 4, in the examples of the present invention, sufficient results were obtained in terms of the ease of taking out the first sheet, the number of times of depression, and the ease of opening. Especially in Examples 1 and 2, the unsealability is also very excellent.

As described above, the film-wrapped tissue according to the present invention gives an impression that foreign matter is difficult to mix, can be used hygienically, is excellent in unsealability, has a high mass per set, and is highly rigid. Even paper is easy to take out.

1... film-wrapped tissue, 2... tissue paper, 2A... folded inside, 2B... folded piece, 2C... folded edge, 3... bundle of tissue paper, 3A... short side, 3B... long side, 3C... bundle Upper and lower surfaces 4 Packaging film 4A End surface 4B Long side surface 4C Upper surface 4D Lower surface 4X Overlapping portion of packaging film 4Y Extended portion of packaging film 4Z Cylindrical opening of packaging film , 5... Outlet forming part, 5A, 5B... Longitudinal direction end part, 50... Easy splitting line, 50C... Cut part, 50U... Uncut part (tie part), L1... Width direction of outlet forming part 5 ( Longitudinal direction) length, L2 ... length in the width direction (longitudinal direction) of the upper surface of the film-wrapped tissue, L3 ... maximum length in the depth direction (lateral direction) of the outlet forming part 5, L4 ... of the upper surface of the film-wrapped tissue Length in the depth direction (lateral direction), L5: Length in the depth direction (lateral direction) of the narrow portion, L6: Length in the depth direction of the narrow portion, L7: Widened portion on one side in the depth direction Range from the middle of 52A to a position exceeding the outer end 53t of the convex portion 53, L8... width of the protruding convex portion, 51... narrow portion, 51A... near edge of the narrow portion, 52... widened portion, 53... Curved portion.

Claims (6)

A film-wrapped tissue in which a bundle of tissue paper is wrapped in a flexible resin-made wrapping film,
The tissue paper is measured by the measurement method of JIS P 8124 (1998), and the basis weight per ply calculated by sheet weight per set / (sheet area x number of plies) is 12.5 to 22.5 g. / m ² , and after sufficiently adjusting the humidity under the conditions of JIS P 8111 (1998), a dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho Co., Ltd.) or its equivalent under the same conditions A 3-ply or 4-ply tissue paper with a paper thickness of 185 to 285 μm measured in a multiple ply state using a machine ,
Having an outlet forming part on the upper surface,
The outlet-forming portion is formed by annularly arranging easy-cleavage lines in which cut portions and non-cut portions are alternately arranged, and extends in the width direction at the center portion in the depth direction of the upper surface and extends at both ends. The part has an elongated shape that protrudes outward,
The length in the width direction of the outlet forming portion is 60 to 75% of the width of the top surface, and the maximum length in the depth direction is 6 to 15 times the length in the depth direction of the top surface. % and
The B value measured by the KES-FB2-S bending tester of the packaging film of the upper surface portion is 0.093 gf×cm ² /cm or less, and the 2HB value is 0.033 gf×cm/cm or less,
The tissue paper has a B value of 0.010 to 0.022 gf×cm ² /cm and a 2HB value of 0.012 to 0.029 gf×cm/cm as measured by a KES-FB2-S bending tester. ,
The B value and 2HB value of the packaging film are the average values obtained by measuring the bending stiffness in the vertical direction of the film three times, and the B value and 2HB value of the tissue paper are the bending stiffness in the horizontal direction of the paper three times. is the average value measured,
In the measurement using the KES-FB2-S bending tester, a sample that had been conditioned for 3 hours or longer in a constant temperature and humidity chamber at 23°C and 50% was used, the size of the sample was 100 mm in width, and the measurement conditions were SENS: 4, Environmental temperature: 20±1°C, Environmental humidity: 60±1%, Bending speed: SET (0.5 cm-1/sec), Curvature: SET (±2.5 cm-1),
In addition, the B value measured by the KES-FB2-S bending tester is a slope in the range of bending curvature 0.5 to 1.5 / -0.5 to -1.5, and 2HB is the bending curvature a hysteresis (width) in the range of 1.0/−1.0;
A film-wrapped tissue characterized by: The outlet forming portion communicates with a narrow portion extending in the longitudinal direction at the central portion in the width direction and an end portion of the narrow portion, and widens gradually outward in the width direction as it separates from the narrow portion. 2. The film-wrapped tissue according to claim 1 , having a shape having a portion and a convex portion which is continuous with the widened portion and bulges outward in the width direction. The narrow portion has a length in the width direction that is 35 to 65% of the length of the top surface, and a length in the depth direction that is 3 to 7% of the length in the depth direction of the top surface. 3. The film-wrapped tissue of claim 2 , wherein the film-wrapped tissue is . 3. The film packaging according to claim 2 , wherein at least one end of the outlet forming portion is a cut portion that continues from the middle of the widened portion on one side in the depth direction to a position beyond the outer side end of the convex portion. tissue. The outlet-forming portion has a cut portion and a non-cut portion arranged differently at each end in the width direction, and the cut portion is positioned at an outer side end of at least one of the ends. 5. The film-wrapped tissue according to any one of 1 to 4 . The film-wrapped tissue paper is obtained by overlapping wrapping a bundle of approximately rectangular parallelepiped tissue paper in which a plurality of tissue papers are folded and stacked. The film-wrapped tissue according to any one of Claims 1 to 5, wherein the end surface is positioned, and an adhesive portion is positioned facing one of the longitudinal sides, where the packaging films are laminated and adhered to each other.

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