JP2023073049A - package - Google Patents

Abstract

To provide a package in which a paper product is packaged by a packaging base material in which a heat seal layer for sealing is laminated on a paper base material, and which has perforations forming an outlet for the paper product in the packaging base material, possible to smoothly open the outlet for the paper product and smoothly take out the paper product even when a remaining amount of the paper product is low.SOLUTION: There is provided a package 1 in which a paper product is packaged by a packaging base material 10 in which a heat seal layer 12 for sealing is laminated on the paper base material, and which has perforations PL forming an outlet for the paper product in the packaging base material 10, in which the heat seal layer 12 is partially laminated on the paper base material so that the heat seal layer 12 is positioned in a non-formation area of the perforations PL including each ridgeline 10rL located on a sealing side among the ridgelines of the packaging base material 10, formed along an outer shape of the paper product.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a package in which a paper product such as a roll of sanitary thin paper or a laminate of sanitary thin paper is packaged with a packaging base material in which a heat seal layer for sealing is laminated on a paper base material.

Conventionally, rolls of sanitary thin paper such as toilet paper and kitchen paper (hereinafter also referred to as "rolled sanitary thin paper" and "rolled sanitary thin paper"), and laminates of sanitary thin paper such as tissue paper and wipers For example, a package in which a roll-shaped paper product is caramel-wrapped is described in Patent Document 1. Patent Document 2 describes a package in which a paper product of No. 1 is gusset-packaged. In this type of package, the packaging film is provided with perforations that form an outlet for the paper products, and the perforations are torn so that the paper products can be taken out.

By the way, in recent years, the problem of plastic waste has become more serious worldwide, and in order to improve the global environment, it is desired to change the packaging material from plastic to other materials. , a packaging body in which a paper product is packaged by replacing the packaging material from a plastic film with paper has been proposed. For example, Patent Literature 3 discloses a package in which a paper product is packaged with a packaging base material in which a heat seal layer for sealing is laminated on a paper base material.

JP 2018-090255 A JP 2008-183034 A Japanese Patent Application Laid-Open No. 2021-070501

However, simply packaging paper products with a packaging base material in which a heat seal layer for sealing is laminated on a paper base material makes it impossible to smoothly open the outlet of the paper product, or the remaining amount of the paper product is small. There is a problem that the paper product cannot be taken out smoothly when it becomes. That is, for example, when the heat-seal layer is laminated over the entire surface of the paper substrate, the heat-seal layer makes it difficult for the perforations to tear, making it impossible to smoothly open the outlet of the paper product. If the sealing portion is partially laminated on the packaging base material, there is a risk that the paper product will lose its shape when the remaining amount of the paper product is low, making it impossible to take out the paper product smoothly.

The present invention relates to a packaging body in which a paper product is packaged by a packaging base material obtained by laminating a heat seal layer for sealing on a paper base material, and having perforations forming an outlet for the paper product in the packaging base material, To smoothly open an outlet for paper products and to smoothly take out the paper products even when the remaining amount of the paper products is low.

In the package according to the present invention, a paper product is packaged by a packaging base material obtained by laminating a heat seal layer for sealing on a paper base material, and perforations forming an outlet for the paper product in the packaging base material. wherein the heat-sealing layer is formed in a perforation-free region including each edge located on the sealing side among the edges of the packaging base formed along the outer shape of the paper product. The heat seal layer is partially laminated on the paper substrate so that

With this configuration, the heat seal layer is located in the non-perforated region, so that the heat seal layer does not make it difficult for the perforations to tear open, and the outlet for the paper product can be opened smoothly. In addition, since the heat seal layer is partially laminated on the paper base material so that the heat seal layer is positioned in the non-formed area of the perforations including the ridge lines (at least the ridge lines located on the sealing side) of the packaging base material, Even when the remaining amount of the paper product is low, the heat seal layer prevents the paper product from losing its shape, so that the paper product can be taken out smoothly.

Moreover, the packaging body according to the present invention is characterized in that the perforations are formed along the MD direction of the paper substrate.

Due to this structure, the perforations are easily split due to the characteristics of the paper substrate that the tensile strength in the CD direction is significantly lower than the tensile strength in the MD direction, and the outlet for the paper product can be opened more smoothly. can be done.

Further, in the package according to the present invention, the heat seal layer is partially attached to the paper substrate so that the heat seal layer is positioned over the entire surface other than the surface having the perforations. It is characterized in that it is laminated to

With this configuration, the heat-seal layer further suppresses deformation of the paper product when the remaining amount of the paper product is low, so that the paper product can be taken out more smoothly.

In addition, in the package according to the present invention, the heat seal layer is partially laminated on the paper substrate so that the heat seal layer is positioned over the entire area of the paper substrate in the MD direction and/or the CD direction. It is characterized by

This configuration improves the degree of freedom in manufacturing the packaging substrate.

According to the present invention, since the heat seal layer is positioned in the area where the perforations are not formed, the heat seal layer does not make it difficult for the perforations to tear open, and the outlet for the paper product can be opened smoothly. can. In addition, since the heat seal layer is partially laminated on the paper base material so that the heat seal layer is positioned in the non-formed area of the perforations including the ridge lines (at least the ridge lines located on the sealing side) of the packaging base material, Even when the remaining amount of the paper product is low, the heat seal layer prevents the paper product from losing its shape, so that the paper product can be taken out smoothly.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall perspective view of a package in which a sanitary thin paper laminate is gusset-packaged according to a first embodiment of the present invention; FIG. 10 is an overall perspective view of a package in which a sanitary thin paper laminate is gusset-packaged according to a second embodiment of the present invention. FIG. 11 is an overall perspective view of a package in which roll-shaped sanitary thin paper is caramel-wrapped according to a third embodiment of the present invention.

The configuration of the package according to the invention will now be described in detail with reference to FIGS. 1-3. However, the present invention is not limited to this embodiment.

As described above, the sanitary thin paper according to the present invention includes toilet paper, kitchen paper, tissue paper, wipers, and the like. It is a roll of sanitary thin paper such as kitchen paper, and "laminated sanitary thin paper" is a folded and laminated product of sanitary thin paper such as tissue paper and wipers. "Tissue Paper" and "Sanitary Tissue Paper Laminate". Hereinafter, in the first and second embodiments of the present invention, a configuration in which a sanitary thin paper laminate is gusset-packaged by a packaging base material in which a heat seal layer for sealing is laminated on the inner surface of a paper base material will be described. In the third embodiment, a configuration in which a roll-shaped sanitary thin paper is caramel-wrapped by a packaging base material in which a sealing heat seal layer is laminated on the outer surface of a paper base material will be described.

In addition, in the description of this specification and the scope of claims, the terms "top surface" and "bottom surface" refer to the surfaces defined by the packaging bag in which the paper product is packaged and exposed to the outside. . However, it goes without saying that these terms are for convenience only and do not define absolute positions in the direction of gravity. The same applies to terms such as "top", "bottom", "left", "right".

Furthermore, in the description of this specification, claims, and drawings, the "height direction", the "width direction", and the "length direction" shall be orthogonal to each other, and the "roll parallel direction" is the above-mentioned " It corresponds to either "width direction" or "length direction". In addition, the "MD direction", which is the transport direction in the manufacturing process, is orthogonal to the "CD direction". It corresponds to the "height direction" in the roll-shaped sanitary thin paper package of the third embodiment.

<First embodiment>
FIG. 1 is an overall perspective view of a package 1 according to a first embodiment of the present invention, in which a paper product that is a sanitary thin paper laminate (a laminate of tissue paper in this embodiment) is gusset-packaged with a packaging base material 10. be.

As shown in FIG. 1, the packaging base material 10 of the packaging body 1 according to the present embodiment includes a pair of facing left folded portion 10L and right folded portion 10R, a peripheral surface 10P, a left folded portion 10L and a right folded portion. and a ridgeline 10rL formed between 10R and the peripheral surface 10P.

Examples of the paper base material of the packaging base material 10 include coated paper, kraft paper, and laminated paper. Also, the paper substrate is obtained by papermaking a slurry containing a pulp component, which is a fiber raw material. Pulp components include wood pulp, non-wood pulp, and waste paper pulp. In this embodiment, the paper substrate is a single glazed paper with gloss on the outside. A known gusset packaging can be employed. Specifically, for example, the inner surfaces of the packaging base 10 are overlapped at both ends in the width direction so that the sanitary thin paper laminate placed on or under the sheet-like packaging base 10 is wrapped in a cylindrical shape. The overlapped portions are heat-sealed to form a cylindrical shape, and the portion to be the left folded portion 10L or the portion to be the right folded portion 10R is folded according to the length of the bag, and the inner surfaces are overlapped with each other. Then, the overlapped portion is heat-sealed horizontally, and the sealed portion is cut into bags. A known device can be used as a device for performing such gusset packaging.

Moreover, the bonding of the packaging base material 10 to the package 1 is performed by the heat sealing method as described above. For adhesion by the above-described method, in the packaging base material 10, a heat-sealing agent that exerts an adhesive function when heat is applied is applied in advance to the inner surface of the paper base material, and the heat-sealing layer 12 is laminated. As a material for forming the heat seal layer 12, for example, a polyolefin resin or other thermoplastic resin can be used. By laminating the heat-seal layer 12 on the inner surface of the paper substrate, besides the original sealing function, rigidity is added, so that the function of preventing deformation can be imparted.

As shown in FIG. 1, the packaging body 1 according to the present embodiment includes a packaging base material 10 in which a heat seal layer 12 for sealing is laminated on a paper base material. It has a perforation PL that forms an outlet for the paper product, and on the sealing side (left folded portion 10L and right folded portion 10R side) of each ridge line of the packaging base material 10 formed along the outer shape of the paper product. The heat seal layer 12 is partially laminated on the inner surface of the paper base material so that the heat seal layer 12 is positioned in the non-formed area of the perforations PL including the ridge lines 10rL. In this embodiment, the strip-shaped region along the ridgeline 10rL that separates the left folded portion 10L and the peripheral surface 10P is the corner portion 10CL, and the strip-shaped region along the ridgeline 10rL that separates the right folded portion 10R and the peripheral surface 10P is the corner portion. Section 10CR. In the present embodiment, as shown in FIG. 1, the heat seal layer 12 is the inner surface of the paper base material, and the left folded portion 10L of the non-formation area of the packaging base material 10 where the perforations PL are not formed. , corner portion 10CL, right folded portion 10R, and corner portion 10CR. In FIG. 1, reference numerals 41L and 41R are attached to the boundaries between the regions of the packaging substrate 10 where the heat seal layer 12 is not laminated and the regions where the heat seal layer 12 is laminated (corners 10CL and 10CR). there is

With this configuration, the heat seal layer 12 is positioned in the area where the perforations PL are not formed, so that the heat seal layer 12 does not make the perforations PL difficult to tear, and the outlet of the paper product is smoothly opened. be able to. In addition, since the heat seal layer 12 is partially laminated on the paper base material so that the heat seal layer 12 is positioned in the non-formation region of the perforations PL including the ridge line 10rL of the packaging base material 10, the remaining amount of the paper product is reduced. The heat seal layer 12 prevents the paper product from collapsing even when the amount of the paper product is reduced, so that the paper product can be taken out smoothly.

Moreover, in this embodiment, as shown in FIG. 1, the perforations PL are formed along the MD direction of the paper substrate.

With this configuration, the perforations PL are easily split due to the characteristics of the paper base material that the tensile strength in the CD direction is significantly lower than the tensile strength in the MD direction, and the outlet for the paper product can be opened more smoothly. be able to.

Further, in the present embodiment, as shown in FIG. 1, at the corners 10CL and 10CR of the left folded portion 10L and the right folded portion 10R, the heat seal layer 12 extends in the CD direction (package A heat-seal layer 12 is partially laminated on the inner surface of the paper substrate so as to be positioned over the entire area (circumferential direction of 1).

With this configuration, the degree of freedom in manufacturing the packaging base material 10 is improved.

In order to achieve the effects of the present invention, the basis weight of the packaging substrate 10 is preferably 30 g/m ² or more and 65 g/m ² or less, more preferably 35 g/m ² or more and 60 g/m ² or less, and It is preferably 45 g/m ² or more and 55 g/m ² or less. With this configuration, the packaging base material 10 is not easily broken, good water resistance can be obtained, and the sealing strength can be improved. That is, when the basis weight of the packaging base material 10 is less than 30 g/m ² , the packaging base material 10 is easily torn and good water resistance cannot be obtained. Further, if the basis weight of the packaging base material 10 exceeds 65 g/m ² , the heating temperature of the heat seal layer 12 decreases during sealing, and good seal strength cannot be obtained (seal strength decreases).

Conventionally, a package in which a paper product such as a roll-shaped sanitary thin paper or a sanitary thin-paper laminate is wrapped with a packaging film such as polyethylene as an object to be packaged is known. Patent Document 1 describes a package, and Patent Document 2 describes a package in which laminated paper products are gusset-packaged. In this type of package, the packaging film is provided with perforations that form an outlet for the paper products, and the perforations are torn so that the paper products can be taken out.

By the way, in recent years, the problem of plastic waste has become more serious worldwide, and in order to improve the global environment, it is desired to change the packaging material from plastic to other materials. , a packaging body in which a paper product is packaged by replacing the packaging material from a plastic film with paper has been proposed. For example, Patent Literature 3 discloses a package in which a paper product is packaged with a packaging base material in which a heat seal layer for sealing is laminated on a paper base material.

However, simply packaging paper products with a packaging base material in which a heat seal layer for sealing is laminated on a paper base material makes it impossible to smoothly open the outlet of the paper product, or the remaining amount of the paper product is small. There is a problem that the paper product cannot be taken out smoothly when it becomes. That is, for example, when the heat-seal layer is laminated over the entire surface of the paper substrate, the heat-seal layer makes it difficult for the perforations to tear, making it impossible to smoothly open the outlet of the paper product. If the sealing portion is partially laminated on the packaging base material, there is a risk that the paper product will lose its shape when the remaining amount of the paper product is low, making it impossible to take out the paper product smoothly.

According to this embodiment, since the heat seal layer 12 is located in the non-formed area of the perforations PL, the heat seal layer 12 prevents the perforations PL from tearing easily. The outlet can be opened smoothly. In addition, since the heat seal layer 12 is partially laminated on the paper base material so that the heat seal layer 12 is positioned in the non-formation area of the perforation PL including the ridge line 10rL of the packaging base material 10, the remaining amount of sanitary thin paper Even when the amount of the sanitary thin paper is reduced, the heat seal layer 12 prevents the shape from collapsing, so that the sanitary thin paper can be taken out smoothly.

<Second embodiment>
In the second embodiment of the present invention, unlike the first embodiment, the packaging base material 10 ′ has a heat seal layer 12 on the inner surface of the paper base material and on the part corresponding to the area other than the area around the perforation PL. By stacking, the rigidity of the package 1' is increased as a whole, and the deformation is suppressed more than in the first embodiment.

FIG. 2 is an overall perspective view of a package in which a sanitary thin paper laminate is gusset-packaged according to a second embodiment of the present invention. Among the elements constituting the packaging body according to the present embodiment, elements having the same functions are assigned the same reference numerals as in the first embodiment, and the description thereof is omitted.

Also in this embodiment, as shown in FIG. 2, the package 1' is a paper product packaged by a packaging base material 10' in which a heat seal layer 12 for sealing is laminated on the inner surface of the paper base material, The packaging substrate 10 ′ has a perforation PL that forms an outlet for the paper product, and the sealing side (left folded portion 10L and The heat seal layer 12 is partially laminated on the inner surface of the paper base material so that the heat seal layer 12 is positioned in the non-formation area of the perforations PL including the ridge lines 10rL positioned on the right folded portion 10R side.

In this embodiment, as shown in FIG. 2, the heat-seal layer 12 is formed on the paper substrate so that the heat-seal layer 12 is positioned over all the surfaces other than the surface having the perforations PL. The inner surface is partially laminated.

In this embodiment, the shape of the boundary 41 between the area where the heat seal layer 12 is not laminated and the area where the heat seal layer 12 is laminated is oval. In the present invention, the shape is not limited to this, and various shapes such as a rectangle with rounded corners and an ellipse can be adopted.

According to the present embodiment, as in the first embodiment, the heat seal layer 12 is located in the area where the perforations PL are not formed, so that the sanitary thin paper outlet can be opened smoothly. In addition, since the heat seal layer 12 is provided on substantially the entire surface of the packaging body 1', the sanitary thin paper can be taken out smoothly by suppressing the loss of shape when the remaining amount of the sanitary thin paper is less than in the first embodiment. can be done.

<Third Embodiment>
In the third embodiment of the present invention, unlike the first embodiment and the second embodiment, a plurality of roll-shaped sanitary thin papers are caramel-wrapped by the packaging base material 10'', and the first embodiment and the second embodiment are carried out. A heat-seal layer 12 is partially provided on a predetermined portion of the packaging substrate 10'' in the same manner as in .

FIG. 3 is an overall perspective view of a package 1'' in which roll-shaped sanitary thin paper is caramel-wrapped according to a third embodiment of the present invention. Among the elements constituting the packaging body according to the present embodiment, elements having the same functions are assigned the same reference numerals as in the first embodiment, and the description thereof is omitted.

The packaging body 1'' according to this embodiment is a packaging base material in which a plurality of roll-shaped sanitary thin paper (toilet rolls in this embodiment) are arranged in parallel so that both end faces are aligned in a direction perpendicular to the axial direction. 10″ and wrapped around the body. As shown in FIG. 3, a package 1'' according to the present embodiment is formed by caramel-wrapping four toilet rolls 2 arranged in two rows and two columns with a packaging base material 10''. Also in this embodiment, the paper base material of the packaging base material 10'' is one-sided glazed paper having gloss on the outside. A well-known thing can be employ|adopted for the said caramel packaging. Specifically, for example, first, the toilet roll 2 placed on the sheet-like packaging base 10'' is wrapped so as to be rolled up, and the outer surface and the inner surface are overlapped at the overlapping portion in the winding direction. , the overlapped portion is adhered via a heat seal layer 12 which will be described later. Next, the excess portion in the height direction beyond the end face position of the toilet roll 2 is folded into the end face side of the toilet roll 2.例文帳に追加Then, the outer surfaces of the triangular pieces or trapezoidal pieces formed at the time of folding are overlapped with each other at the tip edges, and the overlapped portions are adhered via the heat seal layer 12 described later, and the toilet roll 2 is attached to the upper and lower end surfaces. Cover from the sides. A known device can be used as a device for such caramel packaging.

In the packaging substrate 10 ″, a heat seal layer 12 is laminated on the outer surface of the paper substrate for adhesion by the above method.

In this embodiment, as shown in FIG. 3, in the packaging body 1'', the toilet roll 2 is packaged by the packaging base material 10'' in which the heat seal layer 12 for sealing is laminated on the paper base material. , the packaging substrate 10 ″ has a perforation PL that forms an outlet for the toilet roll 2 , and the sealing side ( The heat seal layer 12 is partially applied to the paper base material so that the heat seal layer 12 is positioned in the non-formed region of the perforations PL including the ridge lines 10rL located on the top side folded portion 10T and the bottom side folded portion 10B). Laminated. In the present embodiment, the corner 10CT is a band-shaped region along the ridgeline 10rL that separates the top-side folded portion 10T and the peripheral surface 10P, and the strip-shaped region along the ridgeline 10rL that separates the bottom-side folded portion 10B and the peripheral surface 10P. is a corner portion 10CB. In the present embodiment, the heat seal layer 12 is the outer surface of the paper substrate, and as shown in FIG. It is partially laminated on portions corresponding to 10T, corner portion 10CT, bottom side folded portion 10B, and corner portion 10CB. In FIG. 3, reference numerals 41T and 41B are attached to the boundaries between the area where the heat seal layer 12 is not laminated and the area where the heat seal layer 12 is laminated (corners 10CT and 10CB) of the packaging base material 10''. are doing.

In this embodiment, as shown in FIG. 3, the height direction of the package 1'' is the MD direction of the paper substrate, and the perforations PL are formed along the MD direction. With this configuration, as in the first and second embodiments, the perforations PL are easily split, and the outlet of the toilet roll 2 can be opened more smoothly.

In this embodiment, as shown in FIG. 3, at the corners 10CT and 10CB of the top-side folded portion 10T and the bottom-side folded portion 10B, the heat seal layer 12 extends in the CD direction (package 1″ circumferential direction) is partially laminated on the outer surface of the paper substrate. With this configuration, as in the first embodiment, the degree of freedom in manufacturing the packaging base material 10'' is improved.

According to this embodiment, as in the first embodiment and the second embodiment, the heat seal layer 12 is positioned in the area where the perforations PL are not formed, so that the opening of the toilet roll 2 can be smoothly opened. can. Further, as in the first embodiment and the second embodiment, the heat seal layer 12 is placed on the paper such that the heat seal layer 12 is positioned in the non-formation region of the perforations PL including the ridge line 10rL of the packaging base material 10''. Since the toilet roll 2 is partially laminated on the base material, the heat-seal layer 12 prevents the toilet roll 2 from collapsing even when the rest of the toilet roll 2 is low, so that the toilet roll 2 can be taken out smoothly.

<Others>
The present invention is not limited to the above-described embodiments and modified examples described here and there, and appropriate modifications and variations are possible without departing from the technical idea of the present invention.

For example, in each of the above-described embodiments, the gusset-wrapped form and the caramel-wrapped form of the paper product have been described, but the present invention is not limited to this, and various packaging forms such as a pillow-wrapped form of the paper product (specifically, For packaging, see Patent Document 3).

In addition, in each of the above embodiments, the heat seal layer 12 is laminated on either the inner surface or the outer surface of the paper base material. A mode in which the heat seal layer 12 is laminated on both the inner surface and the outer surface is also acceptable.

Further, in the first and second embodiments, the corners 10CL and 10CR of the left folded portion 10L and the right folded portion 10R (in the third embodiment, the corners 10CT of the top side folded portion 10T and the bottom side folded portion 10B) , 10CB), the heat seal layer 12 is positioned over the entire CD direction (the circumferential direction of the packages 1, 1′, 1″) perpendicular to the MD direction of the paper substrate. Although it is partially laminated on the inner surface of the paper substrate (the outer surface in the third embodiment), the present invention is not limited to this, and as long as the effect of the present invention is exhibited, the heat seal layer 12 is formed on the paper substrate. A mode in which the heat seal layer 12 is partially laminated on the inner surface and/or the outer surface of the paper substrate so as to be positioned over the entire MD direction and/or CD direction of the paper substrate is also acceptable. With this configuration, the degree of freedom in manufacturing the packaging base material 10 is improved.

1, 1', 1'' package 2 toilet roll 10, 10', 10'' packaging base material (packaging bag)
10L left folded portion 10R right folded portion 10P peripheral surface 10B bottom side folded portion 10T top side folded portion 10CL (on the left side folded portion side) corner portion 10CR (on the right side folded portion side) corner portion 10CB (on the bottom side folded portion side) Corner 10CT Corner 10rL (on top side folded side) Ridge 12 Heat seal layer PL Perforation

Claims (4)

A package body in which a paper product is packaged by a packaging base material obtained by laminating a heat seal layer for sealing on a paper base material, and having perforations forming an outlet for the paper product in the packaging base material, The heat seal layer is positioned such that the heat seal layer is positioned in a non-formed region of the perforation including each edge line located on the sealing side among the edge lines of the packaging base formed along the outer shape of the paper product. A package comprising a seal layer partially laminated on the paper substrate. 2. The package according to claim 1, wherein the perforations are formed along the MD direction of the paper substrate. The heat seal layer is partially laminated on the paper substrate so that the heat seal layer is positioned over the entire area of all surfaces other than the perforated surface. The package according to claim 1 or claim 2. 2. The heat seal layer is partially laminated on the paper substrate so that the heat seal layer is positioned over the entire area of the paper substrate in the MD direction and/or the CD direction. The package according to claim 2.

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