Packaging container and wrap film wound body package

Abstract

To provide a packaging container in which a wrap film is easily pulled out and is hardly rolled back.SOLUTION: There is provided a packaging container capable of accommodating a wrap film wound body that is wound in a roll shape, in which the packaging container comprises a packaging container body having a front plate and an upper opening, and a lid for openably / closably covering the upper opening. A varnish-coated layer 40 capable of locking the wrap film pulled out from the wrap film wound body is disposed on the front plate of the packaging container body. In a Raman spectrum of the surface of the varnish-coated layer, a ratio (P1 / P2) of a maximum peak intensity P1 in a range of 1580-1630 cm-1 and a maximum peak intensity P2 in a range of 2800-3000 cm-1 is 1.0 or more and 6.0 or less.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a packaging container and a package made of a wrap film roll. [Background technology]

[0002] Wrap film is usually wound around a core made of paper or resin to form a cylindrical wrap film roll, which is then stored in a rectangular parallelepiped packaging container. Conventionally, this type of packaging container for wrap film has a front plate of the packaging container body that is varnished, and a mechanism is used in which the wrap film pulled out from the wrap film roll is sufficiently tightly attached to the front plate and locked in place to prevent the wrap film from being wound back toward the wrap film roll after it is cut (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-034043 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the adhesion of the wrap film to the varnish layer is too high, the wrap film and the varnish layer will instantly adhere to each other when the wrap film is pulled out, preventing the wrap film from being pulled out, causing excessive stress and vertical tearing of the wrap film, and the wrap film may even be wound back onto the wrap film roll as is.On the other hand, if the adhesion of the wrap film to the varnish layer is too low, the wrap film may easily fly up due to wind pressure when the lid of the packaging container is opened, and the wrap film may be wound back onto the wrap film roll as is.

[0005] In recent years, packaging containers that house rolls of wrap film are required to be able to pull out the wrap film with little force, and also to hold the cut surface of the cut wrap film so that it does not rewind into the roll.

[0006] The present invention has been made in view of the above circumstances. That is, an object of the present invention is to provide a packaging container that allows the wrap film to be easily pulled out and is less likely to rewind, and a packaged product of a wrap film roll using the same. [Means for solving the problem]

[0007] As a result of intensive research, the present inventors have found that the above problems can be solved by using a varnish coating layer that satisfies specific requirements in a packaging container that contains a wrap film roll, and have completed the present invention. That is, the present invention provides the following various specific aspects.

[0008] [1] A packaging container capable of accommodating a wrap film roll in which a wrap film is wound into a roll, A packaging container body having a front panel and an upper opening, and a lid portion for freely opening and closing the upper opening, The front plate of the packaging container body is provided with a varnish coating layer capable of retaining the wrap film pulled out from the wrap film roll, In the Raman spectrum of the surface of the varnish coating layer, -1 The maximum peak intensity P1 in the range of 2800-3000 cm -1 The ratio (P1 / P2) of the maximum peak intensity P1 in the range to the maximum peak intensity P2 in the range is 1.0 or more and 6.0 or less. [2] The packaging container according to [1], wherein the varnish coating layer is composed of a mixture containing a resin having an aromatic group. [3] The packaging container according to [2], wherein the content of the resin having an aromatic group in the varnish coating layer is 7% by mass or more and 35% by mass or less. [4] The packaging container according to any one of [1] to [3], further comprising a flap formed by a score line, the varnish coating layer being provided on at least a front surface of the flap. [5] The packaging container according to any one of [1] to [4], wherein the wrap film is a polyvinylidene chloride film. [6] A packaging container according to any one of [1] to [5], A wrap film roll accommodated in the packaging container body of the packaging container; A package of a wrap film roll comprising: Effect of the Invention

[0009] According to the present invention, it is possible to provide a packaging container that allows wrap film to be easily pulled out and is less likely to rewind, and a packaged product made of a roll of wrap film using the same. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing the appearance of an example of a packaging container for a wrap film. [Diagram 2] FIG. 2 is a development view of an example of a packaging container for a wrap film. [Diagram 3] FIG. 2 is a perspective view showing an example of a packaging container for a wrap film in an opened state. [Figure 4] FIG. 2 is a perspective view showing an example of a packaging container for a wrap film when opening the container. [Diagram 5] A front view of an example of a front panel showing where a varnish layer is formed. [Figure 6] FIG. 2 is a perspective view showing an example of a packaging container for a wrap film provided with flaps and cut lines. [Figure 7] This is an example of a specific image in which the adhesive state was determined to cover more than half of the area of ​​the image in the wetting and spreading test. [Figure 8] This is an example of a specific image in which the area of ​​the image in the wetting and spreading test was determined to be in a tight contact state of less than half. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a mode for carrying out the present invention (hereinafter abbreviated as "the present embodiment") will be described in detail with reference to the drawings. The following embodiments are examples for explaining the present invention, and the present invention is not limited to these. In other words, the present invention can be carried out with any modifications within the scope of the gist of the present invention. Note that the same elements are given the same reference numerals, and duplicated explanations will be omitted. Furthermore, unless otherwise specified, the positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to the ratios shown in the drawings.

[0012] <Packaging container> The packaging container of the present embodiment is a packaging container capable of accommodating a wrap film roll in which wrap film is wound into a roll, and comprises a packaging container body having a front plate and an upper opening, and a lid portion that covers the upper opening in an openable and closable manner. The front plate of the packaging container body is provided with a varnish coating layer that is capable of holding the wrap film pulled out from the wrap film roll, and a Raman spectrum of the surface of the varnish coating layer shows a peak intensity of 1580 to 1630 cm -1 The maximum peak intensity P1 in the range of 2800-3000 cm -1 The ratio (P1 / P2) of the maximum peak intensity P1 in the range to the maximum peak intensity P2 in the range is 1.0 or more and 6.0 or less. By being configured in this manner, the packaging container of this embodiment has the advantage that the wrap film can be easily pulled out and is less likely to rewind. In this embodiment, the term "capable of being locked" means that the 90-degree peel strength test described in the examples below has a peel strength of 1.0×10 -2 This means that it has a 90-degree peel strength of N / 25mm or more.

[0013] Hereinafter, a specific example of the packaging container of this embodiment will be described with reference to the drawings. Fig. 1 is a perspective view showing the appearance of a packaging container 1 for wrap film, and Fig. 2 is a development of the front side of the packaging container 1 for wrap film in Fig. 1. Fig. 3 is a perspective view showing the packaging container 1 for wrap film with the lid open.

[0014] 1 and 2, a packaging container 1 for wrap film has an overall rectangular parallelepiped shape and has, for example, a lid portion 13 consisting of a cover piece 10, a lid plate 11, a side cover piece 12, etc., a packaging container body 19 with an open top consisting of a front plate 14, a bottom plate 15, a rear plate 16, a side plate 17, a fold-back piece 18, an upper opening 19a, etc., and an opening piece 20. The fold-back piece 18 is folded back to the back surface (inner surface) of the front plate 14, and is not visible in the external appearance shown in FIG.

[0015] 3, the packaging container body 19 is formed in a rectangular parallelepiped shape with an upper opening 19a, and for example, a wrap film roll R, in which a transparent wrap film F is wound around a cylindrical core, can be stored through the upper opening 19a. The wrap film F may have a tear strength of, for example, 6 cN or less.

[0016] 1, the cover plate 11 of the cover portion 13 extends forward from the upper edge of the rear plate 16 to cover the upper opening 19a of the packaging container body 19. The cover piece 10 extends from the front edge of the cover plate 11 toward the front plate 14 to cover the front surface of the front plate 14.

[0017] The base paper constituting the packaging container 1 for wrap film may be, for example, cardboard, coated cardboard, corrugated board, etc., but is not limited thereto, and any paper known in the industry may be appropriately selected and used. The base paper may be made of these materials and be embossed, printed, or laminated with polyethylene, etc.

[0018] The opening piece 20 is located at the lower front surface of the front plate 14 of the packaging container body 19, and is formed in a strip shape along the longitudinal direction of the packaging container 1 for wrap film. The opening piece 20 is connected to the leading edge of the cover piece 10 via a cut line 21. Before opening, the back side of the opening piece 20 is adhered to a plurality of adhesive portions 22 of the front plate 14 shown in Fig. 2, whereby the upper opening 19a of the packaging container body 19 is covered by the lid portion 13. Then, as shown in Fig. 4, by cutting the opening piece 20 along the cut line 21, the lid portion 13 becomes openable and closable relative to the upper opening 19a of the packaging container body 19, and the packaging container body 19 is opened.

[0019] A saw blade 30 is provided on the back side of the tip of the cover piece 10 as a cutting part for cutting the wrap film F pulled out from the wrap film roll R of the packaging container body 19, as shown in Figs. 3 and 4. The saw blade 30 is formed across both longitudinal ends of the packaging container 1 (cover piece 10) for wrap film. The saw blade 30 is formed in a position that protrudes downward from the tip edge of the cover piece 10 when the opening piece 20 is cut off. The material of the cutting part such as the saw blade 30 is not particularly limited as long as it is a conventionally known material such as metal, plastic, vulcanized fiber, etc., and the shape of the cutting part is also not particularly limited as long as it is a conventionally known material such as linear, V-shaped, arch-shaped, M-shaped, etc.

[0020] As shown in Figures 2 and 3, a varnish layer 40 is formed on the surface of the front panel 14 to temporarily fasten the wrap film F pulled out from the wrap film roll R. The wrap film F pulled out from the wrap film roll R is temporarily fastened to the varnish layer 40 by being pressed against the varnish layer 40 via the cover piece 10. The varnish layer 40 is formed from, for example, a UV-cured varnish, and has weak adhesive properties. The varnish layer 40 has an elongated shape that continues in the longitudinal direction of the packaging container 1 for wrap film.

[0021] In a preferred embodiment, the varnish layer 40 is formed in a central region narrower than the width D of the wrap film F. For example, as shown in Fig. 5, both longitudinal side edges 40a of the varnish layer 40 are at least 10 mm inward from positions corresponding to both longitudinal ends F1 of the wrap film F, and the longitudinal length is at least ¼ of the width D of the wrap film F. In a preferred embodiment, the distance L between the side edges 40a of the varnish layer 40 and the side edges F1 of the wrap film F may be 10 mm or more, preferably 15 mm or more, and more preferably 18 mm or more.

[0022] In a preferred embodiment, the varnish layer 40 is formed at a position 10 mm or more away from the cutting position (root of the blade) of the saw blade 30 of the cover piece 10 when the top opening 19a of the packaging container body 19 is covered by the cover plate 11 toward the top opening 19a of the packaging container body 19. Therefore, the distance E between the varnish layer 40 and the root of the blade of the saw blade 30 may be 10 mm or more, preferably 14 mm or more, and more preferably 18 mm or more. Similarly, the vertical width H of the varnish layer 40 may be 2 mm or more, preferably 20 mm or less, more preferably 10 mm or less, even more preferably 8 mm or less, and particularly preferably about 4 mm. The width H may be changed within the above range in the longitudinal direction.

[0023] The wrap film F pressed through the cover piece 10 is attached to the varnish coating layer 40 disposed on the front panel 14. At the time of next use, the wrap film F is peeled off from the varnish coating layer 40, and the desired length is further pulled out from the wrap film roll R, and cut with the saw blade 30 with the lid portion 13 closed, thereby obtaining the desired length of wrap film F.

[0024] According to this embodiment, the varnish layer 40 continues along the longitudinal direction of the front panel 14 and has an elongated shape narrower than the width D of the wrap film F, and the varnish layer 40 is not formed in the portion corresponding to the side end F1 of the wrap film F. Therefore, even if the side end F1 of the wrap is scratched during transportation, the adhesive strength of the varnish layer 40 can prevent the wrap film F from tearing from the side end F1 starting from the scratch when a new wrap film F is pulled out next time. The varnish layer 40's ability to prevent the wrap film F from rewinding can also be maintained.

[0025] In particular, when the varnish coating layer 40 has both longitudinal ends 40a located at least 10 mm inward from the positions corresponding to the both longitudinal ends F1 of the wrap film F and has a longitudinal length that is at least 1 / 4 of the width D of the wrap film F, tearing from the side ends F1 of the wrap film F can be more reliably prevented.

[0026] Furthermore, when the upper opening 19a of the packaging container body 19 is covered with the cover plate 11, the varnish coating layer 40 is formed at a position 10 mm or more away from the position of the saw blade 30 of the cover piece 10 toward the upper opening 19 of the packaging container body 19, so that the tip of the wrap film F is not temporarily fixed by the varnish coating layer 40 after cutting. Therefore, even if the tip of the wrap film F is scratched by the saw blade 30 when a new wrap film F is pulled out, the adhesive force of the varnish coating layer 40 can prevent the wrap film F from tearing from the tip starting from the scratch. In addition, a gripping margin that is not temporarily fixed to the varnish coating layer 40 is formed at the tip of the wrap film F, so that the ease of gripping the wrap film F can be improved. Furthermore, if the distance from the upper end edge of the front plate 14 (the folded portion 14a shown in FIG. 2) to the end of the varnish coating layer 40 on the upper opening side is 1 mm or more, it is possible to prevent the wrap film F from coming into contact with the varnish coating layer 40 and becoming difficult to pull out when pulling out the wrap film F, and to maintain better pull-out properties.

[0027] The width H of the varnish layer 40 in the vertical direction is 2 mm or more and 20 mm or less, so that the width H of the varnish layer 40 is appropriate. In other words, because the width H of the varnish layer 40 is 2 mm or more, the wrap film F can be sufficiently temporarily fixed after cutting, and rewinding of the wrap film F can be suppressed. In addition, because the width H of the varnish layer 40 is 20 mm or less, the operation of peeling the wrap film F from the varnish layer 40 can be performed in a short time, improving the workability of removing the wrap film F.

[0028] In particular, when the tear strength of the wrap film F is 6 cN or less, the wrap film F tends to tear easily, so there is a great benefit in preventing tearing of the wrap film F by defining the formation area of ​​the varnish coating layer 40 at a specified position or range, as in one preferred embodiment of this embodiment.

[0029] In the above embodiment, a flap 50 that rises forward may be provided on the front panel 14 as shown in Fig. 6. The flap 50 is formed, for example, by making a cut line 51 in the front panel 14, and can be installed in a state in which it rises forward of the front panel 14 by utilizing the stress that occurs when the folding plate 18 is folded toward the back surface side of the front panel 14. By using such a mechanism in combination with the varnish coating layer 40 in this embodiment, the wrap film F can be made easier to pick up. The packaging container of the present embodiment preferably further comprises a flap formed by a cut line, and the varnish coating layer is provided on at least the front surface of the flap. With such a configuration, the wrapping film and the varnish coating layer tend to come into contact with each other more easily, making the packaging container of the present embodiment even more difficult to unwind.

[0030] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such an example. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the ideas described in the claims, and it is understood that such examples also naturally belong to the technical scope of the present invention.

[0031] In the packaging container of this embodiment, the Raman spectrum of the surface of the varnish coating layer shows a peak at 1580 to 1630 cm -1 The maximum peak intensity P1 in the range of 2800-3000 cm -1 The ratio (P1 / P2) of the maximum peak intensity P2 in the range is from 1.0 to 6.0, preferably from 1.5 to 5.0, and more preferably from 2.0 to 4.0. When the ratio (P1 / P2) is within the above range, the packaging container of this embodiment can make the wrap film easy to pull out and difficult to rewind. In this embodiment, the ratio (P1 / P2) can be measured by the method described in the Examples below. The method of controlling the ratio (P1 / P2) within the above range is not particularly limited, but for example, the method of adding a resin having an aromatic group to the varnish coating layer and adjusting the content thereof appropriately can be mentioned. Specifically, for example, when the content of the resin having an aromatic group is increased in the varnish coating layer, the ratio (P1 / P2) tends to increase.

[0032] The varnish constituting the varnish coating layer is not particularly limited, but an ultraviolet-curable resin composition that is cured by ultraviolet irradiation is preferably used. Various ultraviolet-curable resin compositions are known for this type of application, and they can be used without any particular restrictions as long as the above ratio (P1 / P2) range is satisfied. From the viewpoint of satisfying the above-mentioned range of the ratio (P1 / P2), it is preferable that the varnish coating layer is composed of a mixture containing a resin having an aromatic group. In addition, the content of the resin having an aromatic group in the varnish coating layer is preferably 7% by mass or more and 35% by mass or less, more preferably 10% by mass or more and 30% by mass or less, and even more preferably 15% by mass or more and 25% by mass or less. When the varnish coating layer of the packaging container of this embodiment is configured in this way, the wrap film tends to be easier to pull out and less likely to be rewound.

[0033] Resins containing aromatic groups The resin having an aromatic group is not particularly limited, and any known resin can be used.

[0034] Specific examples of resins having aromatic groups include, but are not limited to, commercially available products such as Joncryl 804 (styrene acrylic resin) manufactured by BASF, Beamset 750 (bisphenol A acrylic resin), Beamset 261 (styrene acrylic resin) and Beamset 271 (styrene acrylic resin) manufactured by Arakawa Chemical Industries, Ltd., and Hi-Loss XVS-1047 (styrene acrylic resin) manufactured by Seiko PMC Co., Ltd. One of these may be used alone, or two or more may be used in appropriate combination.

[0035] From the viewpoints of the abrasion resistance of the varnish coating layer and the adhesive strength to the wrap film, an ultraviolet-curable resin composition containing the following components is more preferred. Amine group-containing styrene (meth)acrylic resin ·Vegetable oil modified (meth)acrylate (Meth)acrylate compounds Photopolymerization initiator Fatty acid esters Other ingredients

[0036] Amine group-containing styrene (meth)acrylic resin The amine group-containing styrene (meth)acrylic resin is not particularly limited, and any known resin can be used.

[0037] Specific examples of amine group-containing styrene (meth)acrylic resins include commercially available products such as Beamset 271 (solid content 50% (diluted acrylate compound), Beamset 267F (solid content 40% (diluted acrylate compound), Beamset 255 (solid content 50% (diluted acrylate compound)) manufactured by Arakawa Chemical Industries, Ltd., but are not limited to these. These may be used alone or in appropriate combination of two or more types.

[0038] The content of the amine group-containing styrene (meth)acrylic resin can be appropriately set depending on the desired performance and is not particularly limited, but is preferably 10 to 30 mass %, more preferably 15 to 25 mass %, in total based on the total mass of the varnish.

[0039] ·Vegetable oil modified (meth)acrylate The vegetable oil-modified (meth)acrylate is not particularly limited, and any known one can be used, but an epoxidized vegetable oil-modified acrylate is preferred.

[0040] Specific examples of the epoxidized vegetable oil modified acrylate include, but are not limited to, PHOTOMER3005 (manufactured by IGM Resins BV), EB860, EB5848 (manufactured by Daicel Allnex Co., Ltd.), MIRAMER PE3130 (manufactured by MIWON), LAROMER EA9101 (manufactured by BASF), CN111 (manufactured by SARTOMER), etc. These may be used alone or in appropriate combination of two or more.

[0041] The content of the vegetable oil-modified (meth)acrylate can be appropriately set depending on the desired performance and is not particularly limited, but is preferably 5 to 20 mass %, more preferably 7 to 15 mass %, in total based on the total mass of the varnish.

[0042] (Meth)acrylate compounds The (meth)acrylate compound is not particularly limited, and known compounds can be used. The vegetable oil-modified (meth)acrylate compound is a type of (meth)acrylate compound, but in this specification, it is treated as a vegetable oil-modified (meth)acrylate compound and is not included in the (meth)acrylate compound. In the following description, "PO" stands for "propylene oxide" and "EO" stands for "ethylene oxide".

[0043] Specific examples of the (meth)acrylate compound include 2-ethylhexyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, β-carboxyethyl (meth)acrylate, 4-tert-butylcyclohexanol (meth)acrylate, tetrahydrofurfuryl acrylate, alkoxylated tetrahydrofurfuryl acrylate, caprolactone (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, isoamyl (meth)acrylate, 2-phenoxyethyl (meth)acrylate, isodecyl (meth)acrylate, 3,3,5-trimethylsilyl (meth)acrylate, and the like. monofunctional (meth)acrylate compounds such as trimethylcyclohexanol (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, norbornyl (meth)acrylate, dicyclopentanyl (meth)acrylate, dicyclopentenyl (oxyethyl) (meth)acrylate, 1,4-cyclohexanedimethanol (meth)acrylate, cyclic trimethylolpropane formal (meth)acrylate, benzyl (meth)acrylate, EO-modified (2) nonylphenol acrylate, (2-methyl-2-ethyl-1,3-dioxolan-4-yl)methyl acrylate, and acryloylmorpholine; 1,3-butylene glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 3-methyl-1,5-pentanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, 1,9-nonanediol di(meth)acrylate, 1,10-decanediol di(meth)acrylate, 1,2-dodecanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, polyethylene glycol (200) di(meth)acrylate, polyethylene glycol (300) di(meth)acrylate, polyethylene glycol (400) di(meth)acrylate, polyethylene glycol (600) di(meth)acrylate, hydroxypivalic acid neopentyl glycol di(meth)acrylate, dipropylene bifunctional (meth)acrylate compounds such as ethylene glycol di(meth)acrylate, tripropylene glycol di(meth)acrylate, EO-modified (2) 1,6-hexanediol di(meth)acrylate, PO-modified (2) neopentyl glycol di(meth)acrylate, (neopentyl glycol-modified) trimethylolpropane di(meth)acrylate, dimethyloltricyclodecane di(meth)acrylate, EO-modified (4) bisphenol A di(meth)acrylate, PO-modified (4) bisphenol A di(meth)acrylate, cyclohexanedimethanol di(meth)acrylate, dimethylol-tricyclodecane di(meth)acrylate, dicyclopentanyl di(meth)acrylate, and tris(2-hydroxyethyl)isocyanurate di(meth)acrylate; trifunctional (meth)acrylate compounds such as trimethylolpropane tri(meth)acrylate, EO-modified (3) trimethylolpropane tri(meth)acrylate, PO-modified (3) trimethylolpropane tri(meth)acrylate, ε-caprolactone-modified tris-(2-acryloxyethyl)isocyanurate, ethoxylated isocyanuric acid tri(meth)acrylate, tris(2-hydroxyethyl)isocyanurate tri(meth)acrylate, and pentaerythritol tri(meth)acrylate; tetrafunctional (meth)acrylate compounds such as pentaerythritol tetra(meth)acrylate and ditrimethylolpropane tetra(meth)acrylate; Pentafunctional (meth)acrylate compounds such as dipentaerythritol penta(meth)acrylate; hexafunctional (meth)acrylate compounds such as dipentaerythritol hexa(meth)acrylate; However, there is no particular limitation to these. These may be used alone or in appropriate combination of two or more. The number of functional groups is preferably two or more. The term "n-functional (meth)acrylate compound" refers to a (meth)acrylate compound having n (meth)acryloyl groups.

[0044] In addition, as the (meth)acrylate compound, urethane acrylate, polyester acrylate, epoxy acrylate, etc. can also be used.

[0045] Urethane acrylates include, for example, those obtained by reacting a diisocyanate with a (meth)acrylate having a hydroxyl group, and those obtained by reacting an isocyanate group-containing urethane prepolymer obtained by reacting a polyol with a polyisocyanate under conditions of an excess of isocyanate groups with a (meth)acrylate having a hydroxyl group, etc. Alternatively, they can also be obtained by reacting a hydroxyl group-containing urethane prepolymer obtained by reacting a polyol with a polyisocyanate under conditions of an excess of hydroxyl groups with a (meth)acrylate having an isocyanate group.

[0046] The polyester acrylate can be obtained, for example, by reacting a polyester polycarboxylic acid obtained by polycondensing a polybasic acid and a polyhydric alcohol with a hydroxyl group-containing (meth)acrylate or the like.

[0047] Examples of epoxy acrylates include those in which the glycidyl group of an epoxy resin is esterified with (meth)acrylic acid to form a functional group, such as a (meth)acrylate group.Specific examples include a (meth)acrylic acid adduct to a bisphenol A type epoxy resin, a (meth)acrylic acid adduct to a novolac type epoxy resin, and the like.

[0048] Specific examples of the (meth)acrylate compound include, but are not limited to, commercially available products such as Miramer EA2280 (modified epoxy diacrylate) manufactured by Toyo Chemicals Co., Ltd., EBECRYL 160S (trimethylolpropane ethoxy triacrylate) manufactured by Daicel-Allnex Corporation, and SR306H (tripropylene glycol diacrylate) manufactured by Sartomer Corporation.

[0049] The (meth)acrylate compounds may be used alone or in appropriate combination of two or more kinds.

[0050] The content of the (meth)acrylate compounds can be appropriately set depending on the desired performance and is not particularly limited, but is preferably 45 to 75 mass %, more preferably 50 to 70 mass %, in total based on the total mass of the varnish.

[0051] Photopolymerization initiator The photopolymerization initiator is not particularly limited, and any known photopolymerization initiator can be used.

[0052] Specific examples of photopolymerization initiators include hydrogen abstraction type photopolymerization initiators such as benzophenone, p-methylbenzophenone, p-chlorobenzophenone, tetrachlorobenzophenone, methyl benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, 4-benzoyl-4'-methyl-diphenyl sulfide, 2-isopropylthioxanthone, 2,4-dimethylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, acetophenone-aryl ketone initiators, 4,4'-bis(diethylamino)benzophenone, 4,4'-bis(dimethylamino)benzophenone, p-dimethylaminobenzoic acid isoamyl, p-dimethylaminoacetophenone-dialkylaminoaryl ketone initiators, thioxanthone, xanthone-based, halogen-substituted, and polycyclic carbonyl initiators. As for the cleavage type photopolymerization initiator, there are benzoin, benzoin methyl ether, benzoin isopropyl ether, α-acrylbenzoyl-benzoin system, benzil, 2-methyl-2-morpholino(4-thiomethylphenyl)propan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-1-butanone, benzil methyl ketal, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-(4-isopropylphenyl-2-hydroxy-2-methylpropan-1-one, Examples of the photopolymerization initiator include, but are not limited to, 4-(2-hydroxyethoxy)phenyl-(2-hydroxy-2-propyl)ketone, 4-(2-acryloyloxyethoxy)phenyl-2-hydroxy-2-propylketone, diethoxyacetophenone, diphenylacylphenylphosphine oxide, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide, etc. The photopolymerization initiator may be used alone or in combination of two or more.

[0053] The content of the photopolymerization initiator can be appropriately set depending on the desired performance and is not particularly limited, but is preferably 5 to 15 mass % in total based on the total mass of the varnish.

[0054] The varnish may contain a photopolymerization initiator aid to improve the curing properties. Specific examples of the photopolymerization initiator aid include, but are not limited to, triethanolamine, methyldiethanolamine, triisopropanolamine, aliphatic amines, 4,4″-diethylaminobenzophenone, ethyl 2-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, and dibutylethanolamine. These may be used alone or in combination of two or more.

[0055] The content ratio of the photopolymerization initiator aid relative to the total mass of the varnish can be appropriately set depending on the desired performance and is not particularly limited, but a total content of 0.1 to 5 mass% relative to the total mass of the varnish is preferably 0.5 to 3 mass%.

[0056] Fatty acid esters The fatty acid ester is not particularly limited, and any known fatty acid ester can be used.

[0057] Specific examples of fatty acid esters include, but are not limited to, methyl laurate, methyl palmitate, methyl stearate, diacylglycerol, triacylglycerol, etc. These may be used alone or in appropriate combination of two or more.

[0058] The content of the fatty acid ester can be appropriately set depending on the desired performance and is not particularly limited, but is preferably 0.5 to 3.0 mass %, more preferably 0.8 to 2.8 mass %, in total relative to the total mass of the varnish.

[0059] Other ingredients The above-mentioned varnish may contain, in addition to the above-mentioned components, various known additives, such as plasticizers, leveling agents, antibacterial agents, antistatic agents, surfactants, defoamers, polymerization inhibitors, antioxidants, UV absorbers, waxes, slip agents, etc., as necessary, provided that the effects of the present invention are not reduced.

[0060] ·UV curing method The method of curing the ultraviolet curable resin composition by ultraviolet irradiation is not particularly limited, and known methods can be applied.For example, the ultraviolet curable resin composition can be cured by applying energy from various light sources such as low pressure mercury lamp, medium pressure mercury lamp, high pressure mercury lamp, ultra-high pressure mercury lamp, xenon lamp, carbon arc lamp, metal halide lamp, fluorescent lamp, tungsten lamp, argon ion laser, helium cadmium laser, helium neon laser, krypton ion laser, various semiconductor lasers, YAG laser, light emitting diode, CRT light source, plasma light source, electron beam, gamma ray, ArF excimer laser, KrF excimer laser, F2 laser, etc. In addition, the film thickness (film thickness after curing) when applying the ultraviolet-curable resin composition can be appropriately set according to the desired performance, and is not particularly limited, but is generally 0.1 to 100 μm, preferably 0.5 to 80 μm, more preferably 1 to 60 μm, even more preferably 2 to 50 μm, more preferably 3 to 40 μm, particularly preferably 4 to 30 μm, especially preferably 5 to 20 μm, and most preferably 6 to 10 μm. Within these film thickness ranges, there is no curing inhibition, the ultraviolet irradiation time can be shortened, productivity is good, and it is also excellent in terms of cost. When paper is used for a packaging container for a wrap film, the unevenness of the paper surface can be absorbed to create a smooth varnish surface, and adhesion to the wrap film is improved.

[0061] -How to apply varnish The method for applying the varnish may be any known method such as a roll coater, a gravure coater, a flexo coater, an offset printer, or a screen printer, but is not limited to these.

[0062] ·Wrapping film Examples of the wrap film used in this embodiment include, but are not limited to, polyvinylidene chloride film, polyvinyl chloride film, polyethylene film, polypropylene film, polymethylpentene film, polyester film, and ethylene-vinyl acetate copolymer film. From the viewpoint of the abrasion resistance of the varnish coating layer and the adhesive strength to the wrap film, the effect of the present invention tends to be significantly exhibited, particularly when applied to polyvinylidene chloride film. In addition, when using polyvinylidene chloride film, although not particularly limited, it is preferable that the content of vinylidene chloride is, for example, 72 mol% to 93 mol%.

[0063] In addition, the wrap film may contain various additives as necessary, but is not particularly limited. The additives are not particularly limited, and examples thereof include known stabilizers such as epoxidized vegetable oils, and known plasticizers such as citrate esters, dibasic acid esters, and cetylated fatty acid glycerides. The epoxidized vegetable oils are not particularly limited, and examples thereof include those generally produced by epoxidizing edible oils and fats. Specific examples thereof include epoxidized soybean oil (ESO) and epoxidized linseed oil. The citric acid esters are not particularly limited, and examples thereof include triethyl citrate, tributyl citrate, triethyl acetyl citrate, tributyl acetyl citrate (ATBC), and tri-n-(2-ethylhexyl) acetyl citrate. Examples of dibasic acid esters include, but are not limited to, adipate esters such as dibutyl adipate, di-n-hexyl adipate, di-2-ethylhexyl adipate, and dioctyl adipate; azelaic acid esters such as di-2-ethylhexyl azelaate and octyl azelaate; and sebacic acid esters such as dibutyl sebacate (DBS) and di-2-ethylhexyl sebacate. Examples of acetylated fatty acid glycerides include, but are not limited to, glycerin diacetyl monolaurate.

[0064] The wrap film may contain compounds other than the epoxidized vegetable oil, citric acid ester, dibasic acid ester, and acetylated fatty acid glyceride (hereinafter referred to as "other compounds"), such as plasticizers, stabilizers, weather resistance improvers, colorants such as dyes or pigments, anti-fogging agents, antibacterial agents, lubricants, nucleating agents, oligomers such as polyesters, and polymers such as MBS (methyl methacrylate-butadiene-styrene copolymer).

[0065] The plasticizer is not particularly limited, but specific examples thereof include dimethyl phthalate, diethyl phthalate, dioctyl phthalate, glycerin, glycerin esters, wax, liquid paraffin, and phosphate esters.

[0066] The stabilizer is not particularly limited, but specific examples thereof include antioxidants such as 2,5-t-butylhydroquinone, 2,6-di-t-butyl-p-cresol, 4,4'-thiobis-(6-t-butylphenol), 2,2'-methylene-bis-(4-methyl-6-t-butylphenol), octadecyl-3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propionate, and 4,4'-thiobis-(6-t-butylphenol); and heat stabilizers such as laurate, myristate, palmitate, stearate, isostearate, oleate, ricinoleate, 2-ethylhexylate, isodecanoate, neodecanoate, and calcium benzoate.

[0067] The weather resistance improver is not particularly limited, but specific examples thereof include ultraviolet absorbers such as ethylene-2-cyano-3,3'-diphenylacrylate, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)5-chlorobenzotriazole, 2-hydroxy-4-methoxybenzophenone, and 2,2'-dihydroxy-4-methoxybenzophenone.

[0068] The colorant such as a dye or pigment is not particularly limited, but specific examples include carbon black, phthalocyanine, quinacridone, indoline, azo pigments, and red iron oxide.

[0069] The antifogging agent is not particularly limited, but specific examples thereof include glycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene fatty acid alcohol ethers, polyoxyethylene glycerin fatty acid esters, and polyoxyethylene sorbitan fatty acid esters.

[0070] The antibacterial agent is not particularly limited, but specific examples include silver-based inorganic antibacterial agents.

[0071] The lubricant is not particularly limited, but specific examples thereof include fatty acid hydrocarbon lubricants such as ethylene bis(steramide), butyl stearate, polyethylene wax, paraffin wax, carnauba wax, myristyl myristate, and stearyl stearate, higher fatty acid lubricants, fatty acid amide lubricants, and fatty acid ester lubricants.

[0072] The nucleating agent is not particularly limited, but specific examples thereof include metal salts of phosphoric acid esters.

[0073] The content of the other ingredients is not particularly limited, but is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, and particularly preferably 0.1% by mass or less, based on the wrap film.

[0074] <Packaging of wrap film roll> The package of the wrap film roll of this embodiment includes the above-mentioned packaging container and the wrap film roll contained in the packaging container body of the packaging container. By including the above-mentioned packaging container, the package of the wrap film roll of this embodiment can make the wrap film easy to pull out and difficult to rewind. EXAMPLES

[0075] The features of the present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited thereto. That is, the materials, amounts used, ratios, processing contents, processing procedures, etc. shown in the following examples can be appropriately changed without departing from the spirit of the present invention. In addition, the values ​​of various manufacturing conditions and evaluation results in the following examples are meant as preferred upper or lower limits in the embodiment of the present invention, and the preferred range may be a range defined by a combination of the above-mentioned upper or lower limit values ​​and the values ​​of the following examples or the values ​​of the examples.

[0076] The measurement and evaluation methods in the examples and comparative examples are as follows. 1. Preparation of UV-curable varnish The materials listed in Table 1 were mixed and stirred at 50°C for 30 minutes. It was visually confirmed that the mixture was uniform, and the UV-cured varnishes (mixtures for forming varnish coating layers) used in Examples 1 to 4 and Comparative Examples 1 to 3 were obtained. If the mixture was not found to be uniform by visual inspection, it was heated to 10°C and stirred for 10 minutes, and this operation was repeated until the mixture was uniform. Here, the values ​​in Table 1 represent the weight ratio (mass%) of each component.

[0077] 2. Preparation of Varnished Layer Samples The UV-cured varnish prepared in 1 above was applied to the surface of the front panel 14 of a packaging container as shown in Figure 2, to an area of ​​approximately 300 mm in the longitudinal direction and approximately 15 mm in the lateral direction, and cured by irradiating it with a 175 W / cm UV lamp for 5 seconds to produce a varnish coating layer 40. The portion where the varnish coating layer was formed (a rectangle approximately 300 mm in the longitudinal direction and approximately 15 mm in the lateral direction) was cut out and used as an evaluation sample. For Comparative Examples 4 and 5, flap portions (rectangles measuring approximately 300 mm long and 15 mm short) coated with anti-rewind varnish were cut out from commercially available products sold in Japan (Comparative Example 4: Saran Wrap (registered trademark) 30 cm x 50 m, manufactured by Asahi Kasei Home Products; Comparative Example 5: NEW Cling Wrap 30 cm x 50 m, manufactured by Kureha Corporation) and used as evaluation samples.

[0078] 3. Evaluation method (a) Preparation of test specimen for Raman spectroscopy A 1 cm x 1 cm test piece was prepared so that the varnish coating layer, which had been conditioned for 1 hour at 23 ± 2 ° C and 50 ± 10% RH, was preferably uniformly included. The test piece and a slide glass were attached with double-sided tape so that the varnish coating surface was on top, and a preparation was prepared. Finally, the varnish coating layer was blown with an air blower 10 times to remove impurities on the varnish coating layer.

[0079] (b) Raman spectroscopy The prepared preparation was placed on a laser Raman microscope (Nano Photon, Laser Raman Microscope RAMANtouch) so that the varnish coating layer was irradiated with the laser, and the Raman spectroscopy of the outermost surface of the varnish coating layer was measured. The excitation wavelength was 532 nm. The measurement conditions were exposure time 1 second, number of integrations 2, excitation light intensity 0.99 mW, diffraction grating 300 gr / mm, pinhole diameter 50 μm, and measurement wave number 200 to 4000 cm -1 The measurements were performed using XZ mapping. The indoor environment was 23±2°C and 50±10% RH. In this measurement, the Raman spectrum of a region of 1.5 μm vertically (depth) and 2 μm horizontally from the surface of the varnish coating layer in the XZ Raman imaging image was extracted, and baseline correction was performed by polynomial fitting. No smoothing processing was performed. In the Raman spectrum, the aromatic ring C=C stretching peak (1580 to 1630 cm due to aromatic compounds) -1 The maximum peak intensity (peak height) of the spectrum peak in the wavenumber band of 1000 to 2000 cm was calculated as the P1 value, and the CH stretching peak (2800 to 3000 cm due to organic matter) was calculated as the P2 value. -1 The maximum peak intensity (peak height) of the spectrum peak in the wave number band was calculated as the P2 value. The aromatic group abundance ratio (P1 / P2) was calculated using the following formula (1). Aromatic group abundance ratio (P1 / P2) = aromatic ring C=C stretching peak (1580-1630cm -1 ) maximum peak intensity (P1 value) / C-H stretching peak (2800-3000cm -1) Maximum peak intensity (P2 value) (1).

[0080] (c) Wetting and spreading test The samples having the varnished layer prepared in 1 and 2 above were conditioned for 4 weeks at 40±2°C and 10±10% RH. The sample pieces of the varnished layer were placed on the sample stage of a laser microscope (Keyence Laser Microscope VK-X1000) so that the varnished layer was facing up, and paperweights were placed on both ends other than the observation part to fix it so that it would not move. Next, the observation magnification was set to 5 times, and the focus was adjusted so that the varnished layer could be clearly observed. On the other hand, a wrap film (manufactured by Asahi Kasei Home Products, product name: Saran Wrap (registered trademark)) was cut into a width of about 100 mm in the longitudinal direction and about 50 mm in the lateral direction to prepare a wrap film piece. The prepared wrap film was brought into contact with a part of the varnished layer while stretched with both hands. After contact, the hands were released from the wrap film, and the state of the contact part was confirmed after 1 second and 10 seconds. In each state, the wetting and spreading property was evaluated visually according to the following criteria. The evaluation was repeated 5 times, and the total score was calculated. A total score of 2 or more was judged to be in contact (wet and spread), and a total score of 1 or less was judged to be not in contact (wet and not spread). Examples of the evaluation are shown in Figures 7 and 8. For example, in the case of Figure 7, it was judged that the in contact state was more than half the area on the image, and it was given a score of 1. Also, for example, in the case of Figure 8, it was judged that the in contact state was less than half the area on the image, and it was given a score of 0. {Evaluation criteria} 1 point: The area of ​​the image that is in contact with the object is more than half. 0 points: The area of ​​the contact is less than half of the image

[0081] [90 degree peel strength test] (a) Preparation of sample pieces for 90-degree peel force test A sample piece 25 mm wide from the varnished layer was selected from the area where the varnished layer was present when cut. If the varnished layer was intermittent and a measurement area of ​​25 mm width could not be obtained, a proportional calculation was performed on the measured value and converted to 25 mm. Finally, double-sided tape was attached to the back of the sample piece (the back of the side to which the varnished layer was applied). Note that if multiple sample pieces of 25 mm width can be obtained from one packaging container along the long side of the varnished layer, multiple samples may be sampled. In order to reduce the variation in storage period during distribution after the sample pieces were created, the wrap film and varnish coating layer were conditioned for 4 weeks at 40±2°C and 10±10% RH, and then the 90° peel strength was measured. The conditioning of the varnish coating layer was performed in the presentation box assembled with the sack machine. That is, the conditioning was performed with the opening piece 20 attached so that dust and other adhesions would not adhere to the varnish coating layer during conditioning, and after conditioning, the opening piece 20 was cut along the cut line 21 and the varnish coating layer was evaluated. (b) Preparation of wrap film pieces for 90-degree peel strength tests The wrap film (manufactured by Asahi Kasei Home Products, product name: Saran Wrap (registered trademark)) conditioned for 4 weeks at 40±2°C and 10±10% RH in the above (a) was cut into a size of 25 mm wide and 100 mm long to prepare a wrap film piece for the 90-degree peeling force test. At this time, the length direction was aligned with the film pull-out direction. A sticky note (manufactured by 3M, product name: Post-it (width 25 mm, length 15 mm)) with a fully adhesive surface was attached as a gripping margin to one end in the length direction. At this time, the width direction of the adhesive sticky note was aligned with the width direction of the wrap film piece. The indoor environment was set to 23±2°C and 50±10% RH. (c) Pressing a varnished sample piece onto a piece of plastic wrap The sample piece of the varnished layer was placed on the iron plate so that the varnished layer conditioned for 4 weeks at 40±2°C and 10±10% RH in (a) faced upward. At this time, the double-sided tape was attached to the iron plate. Next, the end of the wrap film piece prepared in (b) in the length direction opposite to the end where the paper tape was attached was covered on the varnished layer. At this time, the wrap film piece was covered in a direction in which the width of 25 mm and the width of the sample piece of the varnished layer matched. As a result, the entire surface of the sample piece A was covered with the wrap film piece. Note that the surface of the wrap film piece that was in close contact with the sample piece of the varnished layer was the lower side of the wrap film (the surface facing the winding core). Then, using a 2 kg roller pressure bonding device described in JIS Z-0237:2009, the roller was rolled back and forth in total twice in the width direction of the wrap film piece at a speed of 10±0.5 mm / s to pressure bond the wrap film piece and the varnished layer to prepare a pressure-bonded product for measurement. (d) Measurement of 90-degree peel strength Ti The iron plate was fixed to the stand so that the normal line of the surface to which the sample piece of the varnished layer was attached was facing upward, and the paper tape side of the wrap film piece of the measurement pressure-bonded product A was held by a jig connected to a load cell of an autograph (manufactured by Shimadzu Corporation, model number AG-IS 5KN MS type (yoke-resistant specification)) located above the iron plate, and a 90-degree peel force test was performed at a pulling speed of 300 mm / min to measure the 90-degree peel strength. The measured value was the maximum value. Measurements were performed with n=5, and the arithmetic average value was taken as the measured value. The measurements were performed in a temperature-controlled room at 23±2°C and 50±10% RH. Methods of holding the bolt with a load cell-connected jig include gripping with a pantograph-type gripper used in general tensile testing machines, gripping with a flat gripper, and the like, as well as attaching the bolt to the load cell and affixing double-sided tape to the bottom surface of the bolt. Any method is fine as long as it allows the load cell to properly measure the peel strength, but if the gripper vibrates or the like and there is a significant effect of noise, it is preferable to attach the bolt directly to the load cell without using a universal joint, affix double-sided tape to its bottom surface, and then attach the paper tape side of a piece of wrap film to this for measurement.

[0082] (Examples 1 to 4, Comparative Examples 1 to 5) A packaging container capable of accommodating a wrap film roll in which a wrap film is wound in a roll shape, comprising a packaging container body having a front plate and an upper opening, and a lid part for freely opening and closing the upper opening, and a varnish coating layer capable of holding the wrap film pulled out from the wrap film roll, was produced as shown in Figs. 2 and 3. Here, for Examples 1 to 4 and Comparative Examples 1 to 3, as shown in Fig. 2, the varnish coating layer 40 was formed on the surface of the front plate 14 by the above-mentioned method using the blending composition shown in Table 1. For each of the produced packaging containers, Raman spectroscopy measurement and a wetting and spreading test were performed by the above-mentioned method. For Comparative Examples 4 and 5, Raman spectroscopy measurement and a wetting and spreading test were performed by the above-mentioned method using a commercially available product sold in Japan (Comparative Example 4: Saran Wrap (registered trademark) 30 cm x 50 m, manufactured by Asahi Kasei Home Products, Comparative Example 5: NEW Crew Wrap 30 cm x 50 m, manufactured by Kureha Corporation). The results of the Raman spectroscopy and the wetting and spreading test are shown in Table 2. Note that the packaging containers of Examples 1 to 4 had a peel strength of 1.0×10 -2 It was confirmed that the 90-degree peel strength was greater than N / 25 mm, and the varnish coating layer was capable of holding the wrap film in place when it was pulled out from the wrap film roll.

[0083] [Table 1]

[0084] [Table 2]

[0085] As is clear from Table 2, in the packaging containers for wrap films having a varnish coating layer of Examples 1 to 4, the wrap film does not spread wetly after 1 second, but does spread wetly after 10 seconds, meaning that the wrap film does not adhere to the varnish coating layer at the beginning of pulling out, but then quickly adheres. In other words, it can be seen that the packaging containers of Examples 1 to 4 have a high anti-rewinding effect when used, for example, as packaging for a roll of wrap film, without impeding the pulling out of the wrap film. [Industrial Applicability]

[0086] INDUSTRIAL APPLICABILITY The present invention is useful in preventing the rewinding of a wrap film in a packaging container for wrap film without impeding the pulling out of the wrap film. [Explanation of symbols]

[0087] 1. Packaging container for wrap film 10 Cover piece 11 Lid plate 12 Side cover piece 13 Lid 14 Front panel 14a Front panel fold 15 Bottom plate 16 Rear plate 17 Side Panel 18 Folding piece 19 Packaging container body 19a Top opening 20 opening piece 21 Cutting line 22 Adhesive part 30 saw blade 40 Varnish layer 40a side edge 50 Flap 51 Cutting line R Wrap film roll F. Wrapping film

Claims

1. A packaging container capable of accommodating a wrap film roll in which a wrap film is wound into a roll, A packaging container body having a front panel and an upper opening, and a lid portion for freely opening and closing the upper opening, The front plate of the packaging container body is provided with a varnish coating layer capable of retaining the wrap film pulled out from the wrap film roll, In the Raman spectrum of the surface of the varnish coating layer, -1 The maximum peak intensity P1 in the range of 2800 to 3000 cm -1 The ratio (P1 / P2) of the maximum peak intensity P1 in the range to the maximum peak intensity P2 in the range is 1.0 or more and 6.0 or less.

2. 2. The packaging container according to claim 1, wherein the varnish coating layer is composed of a mixture containing a resin having aromatic groups.

3. The packaging container according to claim 2 , wherein the content of the resin having an aromatic group in the varnish coating layer is 7% by mass or more and 35% by mass or less.

4. The packaging container according to claim 1 , further comprising a flap formed by a score line, the varnish coating layer being provided on at least a front surface of the flap.

5. 2. The packaging container according to claim 1, wherein the wrap film is a polyvinylidene chloride film.

6. A packaging container according to any one of claims 1 to 5, A wrap film roll accommodated in the packaging container body of the packaging container; A package of a wrap film roll comprising:

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