JP2021054436A - Roll product package - Google Patents

Abstract

To provide a roll product package reduced in environmental load and weight.SOLUTION: A roll product package 1 stores at least one piece of a roll product 6 formed by winding a sheet of sanitary tissue paper in a packaging bag 2 having a paper substrate. A ratio of (weight of the paper substrate)/(total wound length of the roll product) is 0.03 g/m or more and 0.12 g/m or less. A seal member 5 is preferably provided at a top part 3 of the package 1 to allow easy opening.SELECTED DRAWING: Figure 1

Description

The present invention relates to a roll product package.

As a roll product package that wraps roll-shaped thin paper such as toilet paper and kitchen paper, a resin film such as polyethylene is used to form the main body of the package, and the upper part is folded flat to form a grip. It is generally used (Patent Document 1).

On the other hand, for the purpose of reducing the environmental load, in various fields, it is possible to replace some of the raw materials for resins from fossil fuel-derived raw materials to biomass-derived raw materials, which are renewable organic resources produced from animals and plants. It is being considered.

Regarding the packaging for roll-shaped products, for example, Patent Document 2 discloses a packaging material for sanitary tissue paper made of plant-derived plastic for collectively packaging a plurality of sanitary tissue paper.

Japanese Unexamined Patent Publication No. 2004-269010 Japanese Unexamined Patent Publication No. 2011-073693

By the way, roll-shaped sanitary tissue paper is sold for a longer period of time than before, with a larger amount of effective use per roll, reduced frequency of replacement, and compactness during transportation and storage. ing.

However, since the above-mentioned long-rolled roll products have a large weight per roll, the sanitary tissue paper packaging material made of plant-derived plastic, which has a problem in strength, is packaged when the purchaser carries it. There was a risk that the packaging material would be torn due to the load applied to the bottom of the body. Therefore, it is conceivable to select a paper base material as the base material of the packaging bag and make the packaging bag thicker. However, if the packaging bag is made thicker and stronger, it is possible to save resources and improve weight reduction. There was a problem that it could not be done.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a packaging material made of a paper base material, which can reduce the environmental load and reduce the weight of the roll product. And.

The means for solving the above problems are as follows.

(1) The first aspect of the present invention is a roll product packaging body in which at least one roll product wrapped with a sheet of sanitary tissue paper is stored in a packaging bag provided with a paper base material (the paper base). The roll product package is characterized in that the ratio represented by (weight of the material) / (total winding length of the roll product) is 0.03 g / m or more and 0.12 g / m or less.

(2) The second aspect of the present invention is the roll product package according to (1), wherein the paper base material has a non-laminated structure.

(3) A third aspect of the present invention is the roll product package according to (1) or (2), wherein the paper base material contains unbleached kraft pulp, and unbleached kraft accounts for the total pulp. The pulp content is 90% by mass or more.

(4) A fourth aspect of the present invention is the roll product package according to any one of (1) to (3), wherein the roll product is composed of a 2-ply sheet and has a winding length of 50 m. It is characterized in that it is 103 m or less.

Therefore, according to the present invention, it is possible to provide a wrapping material made of a paper base material, which can reduce the environmental load and reduce the weight of the roll product.

It is a perspective view of the roll product package body of this invention. It is a perspective view which shows another embodiment of the roll product package of this invention.

Hereinafter, embodiments for carrying out the present invention (hereinafter, embodiments) will be described in detail with reference to the accompanying drawings. The same elements are designated by the same reference numerals throughout the description of the embodiments. These are listed for purposes of illustration and are not intended to limit the invention.

FIG. 1 is a perspective view of the roll product package 1 of the present invention. The roll product packaging body 1 of the present invention is formed by storing at least one roll product 6 wrapped with a sheet of sanitary tissue paper in a packaging bag 2 provided with a paper base material.

The roll product 6 is preferably stored with its axial direction up and down so that it will not be crushed during transportation. Further, when packaging a plurality of products together, the roll products 6 whose axial directions are vertically arranged may be arranged in one stage or stacked in two or three stages in the vertical direction for storage. preferable.

Examples of the packaging form of the roll product packaging body 1 include gusset packaging, pillow packaging, and caramel packaging. Among these, gusset packaging is preferable because the thickness of the product is high and the side surface of the roll has large irregularities due to the roll. Further, when the packaging bag 2 is attached, an adhesive, an adhesive tape, or the like, which is generally used in the packaging bag 2 provided with a paper base material, can be used. When using an adhesive, for example, using a glue unit or a transfer roll, a vinyl acetate-based or ethylene-vinyl acetate-based adhesive is transferred to a paper substrate and then heated and dried to form a top 3 and a bottom 4. It is preferable to do so. The bottom 4 is preferably bonded with a vinyl acetate-based or ethylene-vinyl acetate-based adhesive so as to withstand the load of the roll product 6. In addition, as the hot melt adhesive, a biodegradable resin such as polylactic acid (PLA) or poly-3-hydroxybutyric acid (PHB), or an adhesive containing starch or the like can also be used.

Since the packaging bag 2 has increased paper strength so as to withstand the load of the roll product 6 and is not easy to open, it is preferable that the roll product package 1 is provided with the sealing member 5. As shown in FIG. 1, the sealing member 5 is preferably provided on the top 3 for hygienic management of the roll product 6, but may be provided on the side surface of the packaging bag 2, or a plurality of sealing members 5 may be provided. .. The sealing member 5 may have a known structure, and has, for example, a base material and an adhesive layer on the inner upper surface portion of the base material. As the base material, a known material used for sealing can be used, and examples thereof include paper and resin films. Further, as the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer, a known material can be used.

In the roll product package 1 of the present invention, it is preferable to provide a visibility indication on the bottom 4. Further, on the surfaces other than the bottom 4, it is preferable to keep the displayability display to the minimum display in order to reduce the amount of ink used. Here, the visibility display is a display that requires high visibility, specifically, a quality display, a product identification code, a sticker for application for consumer campaigns, etc., precautions for use, and other high-visibility information. Yes, the exhibitability display refers to information appealing to consumers, such as sentences and / or designs appealing to consumers. By printing the high visibility information on the bottom 4, it is possible to display the ecology of the roll product package 1 as a package display that consumers can visually feel.

FIG. 2 is a perspective view showing another embodiment of the roll product package 1 of the present invention. The packaging bag 2 containing the roll product 6 is sealed by the side surface portion 7. In this embodiment, it is preferable that the displayability display is provided on the top portion 3 and the visibility display is provided on the side surface portion 7. Further, various indications can be provided on the seal member 5.

(Packaging bag)
The packaging bag 2 of the present invention includes a paper base material produced by using wood pulp as a main raw material. The paper base material is not particularly limited as long as it is generally used as a packaging material, and for example, kraft paper, high-quality paper, medium-quality paper, art paper, coated paper, cast-coated paper, inkjet recording paper, etc. It can be formed from paper such as Kurupak paper, liner, white paperboard, or paperboard. Among them, kraft paper, krupac paper, and paperboard are preferably used for the packaging bag 2 because of their excellent strength.

Examples of the pulp raw material of the paper base material of the present invention include chemical pulp (bleached coniferous kraft pulp (NBKP) or unbleached kraft pulp (NUKP), bleached broadleaf kraft pulp (LBKP) or unbleached kraft pulp (LUKP). ), Mechanical pulp (groundwood pulp (GP), refiner mechanical pulp (RGP), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP)), deinked pulp (DIP) and the like can be used. These can be used alone or in combination of two or more. Further, the pulp slurry may contain a material other than pulp fiber as an auxiliary material. The cooking method and the bleaching method in pulp production are not particularly limited. In the packaging bag 2 of the present invention, the content ratio of pulp fibers is preferably 70% by weight or more and 100% by weight or less, more preferably 76% by weight or more and 100% by weight or less, and 85% by weight or more and 100% by weight or less. It is more preferably% or less. Further, in order to obtain strong paper strength, unbleached kraft pulp is contained, and the content ratio of unbleached kraft pulp in the total pulp is preferably 90% by mass or more, more preferably 95% by mass or more, and not yet. More preferably, it is only bleached kraft pulp. Further, the content ratio of (NBKP) in the softwood unbleached kraft pulp to the unbleached kraft pulp is preferably 90% by mass or more, more preferably 95% by mass or more, and only the softwood unbleached kraft pulp is used. More preferred.

Further, if necessary, a wet paper strength improver, a filler, a sizing agent, a dry paper strength enhancer, a yield improver, a coloring pigment and the like may be added to the paper base material in an appropriate amount. The wet paper strength improver can be selected and used from commonly used known ones. For example, it is preferable to select from amide / amine resin, acrylamide resin, melamine resin and the like, and considering the influence on the environment, it is more preferable to use a resin that does not contain an organic chlorine compound (AOX). The content of such a wet paper strength improver (mass in an absolutely dry state) is 0.01% by weight or more and 0.7 weight by weight of the wet paper strength improver with respect to the pulp (mass in an absolutely dry state). % Or less, preferably 0.03% by weight or more and 0.5% by weight or less, more preferably 0.05% by weight or more and 0.3% by weight or less. This is because even if the blending amount exceeds 0.7% by weight, it is difficult to obtain an effect commensurate with the added amount, resulting in an increase in cost. Further, if the blending amount of the wet paper strength improving agent is less than 0.01% by weight, it becomes difficult to obtain sufficient wet paper strength. In the packaging bag 2 of the present invention, these raw materials can be made by a normal papermaking process to obtain a paper base material.

Further, the packaging bag 2 provided with a general paper base material often has a laminated structure made of polyethylene or polypropylene resin in order to enable heat welding, but it is used for the packaging bag 2 of the present invention. The paper substrate to be used preferably has a non-laminated structure. Since it has a non-laminated structure, it can be reused as a garbage bag after use, and the packaging bag 2 after reuse as used paper collection or combustible garbage can be taken out as it is.

The packaging bag 2 may have a gas barrier property. The packaging bag 2 having a gas barrier property can prevent the fragrance from volatilizing to the outside even if the scented roll product 6 is stored. Examples of the method for imparting gas barrier properties include a method of laminating a resin film containing an aluminum foil, a polyester resin, a polyolefin resin, a polyamide resin, etc. on a paper base material, and a water-soluble paint containing a pigment, a binder, or the like as a main component. Examples thereof include a method of coating on a paper base material. Among these, a method of applying a water-soluble paint to a paper base material is preferable from the viewpoint of reducing _{CO 2} emissions at the time of disposal.

(Roll product)
The roll product 6 of the present invention is formed by winding a sheet of sanitary tissue paper. Examples of sanitary tissue paper include toilet paper, kitchen paper, paper hand towels, paper wipers, wipers, and the like, but the sheet-shaped paper is not limited to this.

The roll product 6 may be made of 100% by mass of wood pulp, or may contain used paper pulp, non-wood pulp, and deinked pulp.

When the roll product 6 is a toilet roll, the content of softwood bleached kraft pulp (NBKP) is preferably 0% by mass or more and 35% by mass or less, and more preferably 2% by mass or more and 25% by mass or less. It is more preferably 5% by mass or more and 15% by mass or less. Further, the content of hardwood bleached kraft pulp (LBKP) is preferably 50% by mass or more and 100% by mass or less, more preferably 60% by mass or more and 90% by mass or less, and 70% by mass or more and 80% by mass or less. Is more preferable.

Further, the content of used paper pulp derived from a liquid beverage such as a milk carton (milk pack) is preferably more than 0% by mass and 40% by mass or less, more preferably 5% by mass or more and 30% by mass or less. It is more preferably mass% or more and 20% by mass or less, and the content of kraft pulp is preferably 60% by mass or more and 100% by mass or less, and more preferably 70% by mass or more and 95% by mass or less. It is more preferably 80% by mass or more and 90% by mass or less.

Recycled paper pulp derived from liquid beverages such as milk cartons is mainly made of softwood pulp and has the advantage of easily improving the strength of roll product 6, but the quality varies widely and the content ratio is too high. And may affect the quality of the product. By setting the content of used paper pulp derived from a liquid beverage such as a milk carton within the above range, the strength of the roll product 6 can be effectively improved while suppressing the variation in quality.

The winding length (winding length) of the roll product 6 of the present invention is preferably 50 m or more and 103 m or less. Sanitary tissue paper (toilet roll) having such a roll length is also called a so-called long roll toilet roll, or may be called a double roll toilet roll or a triple roll toilet roll. Here, the total winding length of the roll product 6 is, for example, the total winding length of two sheets of toilet paper in the case of a 2-ply toilet roll.

By setting the winding length of the roll product 6 within the above range, the frequency of replacement of the roll product 6 can be reduced, space can be saved, the winding diameter can be maintained within an appropriate range, and the roll product 6 can be replaced. 6 is sufficiently housed in a holder for a roll product or the like. The winding length of a normal 1-ply toilet paper per roll is about 50 m.

The roll product package 1 of the present invention has a ratio represented by (weight of paper base material) / (total winding length of roll product 6) of 0.03 g / m or more and 0.12 g / m or less. The ratio is more preferably 0.04 g / m or more and 0.11 g / m or less, and further preferably 0.07 g / m or more and 0.09 g / m or less. If it is less than 0.03 g / m, the strength may be insufficient, while if it exceeds 0.12 g / m, the costability is inferior.

For example, the roll product package 1 for storing six 2-ply toilet rolls having a winding length of 75 m can be obtained by calculating a suitable range of the weight of the paper base material as follows.
75 x 2 x 6 x 0.03 = 27 g
75 x 2 x 6 x 0.09 = 81 g

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above-described embodiments and examples. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. Further, it is clear from the description of the scope of claims that the form to which such a modification or improvement is added may be included in the technical scope of the present invention.

1 Roll product packaging 2 Packaging bag 3 Top 4 Bottom 5 Sealing member 6 Roll product 7 Side

Claims (4)

A roll product package in which at least one roll product wrapped with a sheet of sanitary tissue paper is stored in a packaging bag provided with a paper base material.
A roll product package having a ratio represented by (weight of the paper base material) / (total winding length of the roll product) of 0.03 g / m or more and 0.12 g / m or less. The roll product package according to claim 1, wherein the paper base material has a non-laminated structure. The paper substrate contains unbleached kraft pulp and
The roll product package according to claim 1 or 2, wherein the content of unbleached kraft pulp in the total pulp is 90% by mass or more. The roll product package according to any one of claims 1 to 3, wherein the roll product is composed of a 2-ply sheet and has a winding length of 50 m or more and 103 m or less.

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