JP7087540B2 - Packaging material for tube containers and tube containers - Google Patents

Description

The present invention relates to a packaging material for a tube container and a tube container, and more particularly to a packaging material for a tube container and a tube container capable of maintaining the appearance by being resistant to scratches even if the tube containers are rubbed against each other during transportation.

Conventionally, as a tube container, a tube container having a first sealant layer sequentially laminated from an outer surface to an inner surface, a base material layer, and a second sealant layer is known. Further, the base material layer is printed on the inner surface side thereof.

By the way, when transporting a tube container, a plurality of tube containers are stored in a cardboard box, and each of the cardboard boxes is transported.

However, during the transportation of the tube containers, the tube containers may rub against each other and the outer surface of the tube container may be scratched, which may deteriorate the appearance of the tube container.

Japanese Unexamined Patent Publication No. 2005-178851

The present invention has been made in consideration of such a point, and an object of the present invention is to provide a packaging material for a tube container and a tube container that are not easily scratched even if the tube containers are rubbed against each other during transportation and maintain the appearance. And.

The present invention comprises a first sealant layer / a printed base material layer / a second sealant layer arranged in order from the outer surface to the inner surface in a packaging material for a tube container, and the first sealant layer is a resin and the resin. It has wear-resistant particles contained therein, and the wear-resistant particles are contained in the first sealant layer in the range of 0.2 to 6% by weight, and the packaging materials for tube containers are combined with each other in the first sealant. It is a packaging material for tube containers, which has a static friction coefficient of 0.18 to 0.22 and a dynamic friction coefficient of 0.16 to 0.20 when a contact with the layer is subjected to a slip test.

The present invention is a packaging material for a tube container, wherein the first sealant layer has a polyethylene resin and the wear-resistant particles contained in the polyethylene resin.

The present invention is a packaging material for a tube container, wherein the wear-resistant particles contain at least one of silicon oxide, silicone, and aluminum oxide.

The present invention is a packaging material for a tube container in which the printed substrate layer has gas barrier properties.

The present invention is a packaging material for a tube container further provided with a gas barrier layer.

The present invention comprises a first sealant layer / a printing substrate layer / a second sealant layer arranged in order from the outer surface to the inner surface in a tube container, and the first sealant layer is contained in a resin and the resin. It has abrasion-resistant particles, and the abrasion-resistant particles are contained in the first sealant layer in the range of 0.2 to 6% by weight, and the tube containers are brought into contact with each other in the first sealant layer and slip. When the test is performed, the static friction coefficient is 0.18 to 0.22, and the dynamic friction coefficient is 0.16 to 0.20, which is a tube container.

The present invention is a tube container in which the first sealant layer has a polyethylene resin and the wear-resistant particles contained in the polyethylene resin.

The present invention is a tube container in which the wear-resistant particles contain at least one of silicon oxide, silicone, and aluminum oxide.

In the present invention, the printed substrate layer is a tube container having gas barrier characteristics.

The present invention is a tube container further provided with a gas barrier layer.

As described above, according to the present invention, even if the tube containers rub against each other during transportation, the tube containers are not easily scratched, and thus the appearance of the tube containers is not deteriorated.

FIG. 1A is a side sectional view showing a laminated body of packaging materials for a tube container according to the first embodiment. FIG. 1B is a side sectional view showing a laminated body of packaging materials for a tube container according to the second embodiment. FIG. 2 is a diagram showing a manufacturing method of a tube container. FIG. 3 is a diagram showing a manufacturing method of a tube container. FIG. 4 is a side sectional view showing a packaged product including a tube container. FIG. 5 is a diagram showing a state in which a tube container is conveyed.

<First Embodiment of the present invention>
The packaging material for a tube container and the tube container according to the first embodiment of the present invention will be described in more detail below with reference to drawings and the like.

First, the tube container 20 produced by using the tube container packaging material 10 according to the present invention will be described with reference to FIGS. 2 to 4.

The tube container 20 includes a tubular body portion 21 including a packaging material 10 for a tube container, and a shoulder portion 13 and a mouth portion 14 manufactured by providing a resin to the tubular body portion 21 by compression molding. .. Further, the cap 16 is attached to the mouth portion 14 of the tube container 20.

The tube container 20 having such a structure is obtained through the following manufacturing process.

First, as shown in FIG. 2, using the tube container packaging material 10 according to the present invention, both ends 11 and 11'of the tube container packaging material 10 are overlapped, and the outer surface and the inner surface of the polymerized portion are heated. The heat-sealed portion 12 is formed by sealing, and the tubular body portion 21 is manufactured. Next, as shown in FIG. 3, the above-mentioned tubular body portion 21 is mounted in a mold, and the shoulder is placed in one opening 21A of the tubular body portion 21 by, for example, a normal method such as a compression molding method. The portion 13 and the mouth portion 14 are formed. In this way, the shoulder portion 13 and the mouth portion 14 are integrally molded in the one opening portion 21A of the tubular body portion 21, and the tube container 20 is manufactured. Then, the cap 16 is attached to the mouth portion 14 of the tube container 20.

Next, for example, toothpaste and other contents 17 are filled in an appropriate amount from the other opening 21B of the tubular body portion 21 of the tube container 20. After that, the other opening 21B is welded to form the bottom seal portion 18, and a packaged product 20A including the tube container 20 filled and packaged with the content 17 is obtained.

Next, the tube container packaging material 10 for producing the tube container 20 will be described with reference to FIG. 1A. As shown in FIG. 1A, the packaging material 10 for a tube container has a printing base layer having a first sealant layer 2 arranged in order from an outer surface to an inner surface, and a printing portion 3a composed of a base layer 3 and printing ink. It includes a laminate having 3A and a second sealant layer 5.

Further, the first sealant layer 2 and the printed base material layer 3A are bonded by a dry laminate (DL), and the printed base material layer 3A and the second sealant layer 5 are bonded by a dry laminate (DL).

Next, the material of each part constituting the packaging material 10 for a tube container will be described.

The first sealant layer 2 and the second sealant layer 5 may contain, for example, polyethylene (PE). Specifically, the first sealant layer 2 and the second sealant layer 5 may be made from the following materials.

The first sealant layer 2 and the second sealant layer 5 may be any as long as they can be melted by heat and fused to each other. For example, low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE). ), Linear (linear) low density polyethylene (LLDPE), polypropylene (PP), ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene -Polyolefin-based resins such as methacrylic acid copolymers, ethylene-propylene copolymers, methylpentene polymers, polyethylene or polypropylene are not used as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, etc. A resin made of one or more of acid-modified polyolephine-based resin modified with saturated carboxylic acid, polyvinyl acetate-based resin, polyester-based resin, polystyrene-based resin, and the like can be used.

Further, of the first sealant layer 2 and the second sealant layer 5, the first sealant layer 2 on the outer surface side contains the above-mentioned resin as a base material, and further, the range of 0.2 to 6% by weight is contained in the resin. Contains wear resistant particles.

The wear-resistant particles contained in the resin of the first sealant layer 2 include at least one of silicon oxide, silicone, and aluminum oxide.

Since the wear-resistant particles are contained in the resin of the first sealant layer 2 in this way, the coefficient of friction of the first sealant layer 2 decreases, and the first sealant layer 2 has excellent wear resistance. ..

For example, the friction coefficient on the first sealant layer 2 side of the packaging material 10 for a tube container has a static friction coefficient of 0.18 to 0.22 and a dynamic friction coefficient of 0.16 to 0.20 as described later.

Further, the printing base material layer 3A has a base material layer 3, and a polyethylene terephthalate (PET) layer can be used as the base material layer 3, and by printing on the PET layer 3, the PET layer 3 is printed with printing ink. A printing unit 3a can be provided.

Further, instead of using the PET layer as the base material layer 3, a nylon (Ny) layer may be used, or a polyethylene terephthalate (PET) layer having a metal vapor deposition film on the surface and having gas barrier characteristics may be used, and the surface may be used. A nylon (Ny) layer having a metal vapor deposition film and having gas barrier characteristics may be used.

Next, a method for manufacturing a packaging material for a tube container will be described.

First, printing is applied to the base material layer 3, and in this way, the base material layer is provided with a printing unit 3a made of printing ink, and the printing base material layer having the base material layer 3 and the printing part 3a made of printing ink. 3A is obtained.

Next, the second sealant layer 5 is bonded to the inner surface side of the printed substrate layer 3A by dry laminating.

Next, the first sealant layer 2 is bonded to the outer surface side of the printed substrate layer 3A by a dry laminate (DL) using polyethylene. In this way, the packaging material 10 for a tube container is obtained.

The tube container packaging material 10 thus obtained is formed into a cylindrical shape, and both end portions 11 and 11'are overlapped as described above, and the tube container packaging material 10 is formed at both end portions 11 and 11'. The outer surface and the inner surface are heat-sealed to produce a tubular body portion 21.

In this case, the first sealant layer 2 provided on the outer surface side of the tube container packaging material 10 and the second sealant layer 5 provided on the inner surface side are melted and joined to obtain a tubular body portion 21. ..

Next, the tubular body portion 21 is inserted into the mold, and the shoulder portion 13 and the mouth portion 14 are formed on the tubular body portion 21 by a compression molding method to obtain a tube container 20 (FIG. 2). And see Figure 3).

Next, the cap 16 is attached to the mouth portion 14 of the tube container 20 thus obtained, and a plurality of tube containers 20 to which the cap 16 is attached are collectively housed in the cardboard box 30 (see FIG. 5). After that, the plurality of tube containers 20 to which the cap 16 is attached are conveyed together with the cardboard box 30.

In the cardboard box 30, the plurality of tube containers 20 are in contact with each other and are compactly stored in the cardboard box 30.

During this transfer, the tube containers 20 are rubbed against each other. In this case, the tube container 20 has a first sealant layer 2 located on the outer surface side, and the first sealant layer 2 has a resin as a base material and wear-resistant particles contained in the resin. , The wear resistance on the outer surface side of the tube container 20 is improved. As a result, even if the tube containers 20 rub against each other, the outer surface of the tube container 20 is not scratched.

As described above, according to the present embodiment, the packaging material 10 for a tube container has a first sealant layer 2 located on the outer surface side, and the first sealant layer 2 is a resin serving as a base material and this resin. It has wear-resistant particles contained therein. Therefore, the coefficient of friction on the first sealant layer 2 side of the tube container packaging material 10 decreases, and the wear resistance of the tube container packaging material 10 is improved. As a result, even if the tube containers 20 rub against each other, the outer surface of the tube container 20 is not scratched, and the appearance of the tube container 20 can be maintained.

<Second embodiment>
Next, a second embodiment of the present invention will be described with reference to FIG. 1B.

In the second embodiment shown in FIG. 1B, the gas barrier layer 4 is attached to the printed substrate layer 3A of the tube container packaging material 10 by dry laminating, and the second sealant layer 5 is attached to the gas barrier layer 4 by dry laminating. It is attached. In the second embodiment shown in FIG. 1B, the other configurations are the same as those of the first embodiment shown in FIGS. 1A, 2 to 5. In the second embodiment shown in FIG. 1B, the same parts as those of the first embodiment shown in FIGS. 1A and 2 to 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the second embodiment, the packaging material 10 for a tube container further has a gas barrier layer 4 arranged between the printed base material layer 3A and the second sealant layer 5, and the gas barrier layer 4 is a metal foil. , Or a film having a substrate film and a vapor-deposited film deposited on the substrate film (see FIG. 1B).

Specifically, examples of the metal foil used as the gas barrier layer include aluminum foil. The base film on which the vapor-deposited film is provided includes polyethylene-based resin, polypropylene-based resin, cyclic polyolefin-based resin, fluorine-based resin, polystyrene-based resin, acrylonitrile-styrene copolymer (AS resin), and acrylonitrile-butadiene-. Polystyrene copolymer (ABS resin), polyvinyl chloride resin, fluororesin, poly (meth) acrylic resin, polycarbonate resin, polyethylene terephthalate, polyester resin such as polyethylene naphthalate, polyamide resin such as various nylons, etc. Resin, polyimide resin, polyamideimide resin, polyarylphthalate resin, silicone resin, polysulfone resin, polyphenylene sulfide resin, polyethersulfone resin, polyurethane resin, acetal resin, cellulose resin, etc. Various resin films or sheets can be used.

In the present invention, it is particularly preferable to use polyethylene terephthalate (PET) as the base film.

Further, as the thin-film vapor-deposited film deposited on the base film, an aluminum-deposited film can be used, and as the gas barrier layer, VM-PET containing the base film and the aluminum-deposited film can be used.

Next, specific examples of the present invention will be described. In this embodiment, a slip test, a rubbing test, and a transportation test are performed on the tube container packaging material (hereinafter, also simply referred to as a packaging material) 10 in the first embodiment and the second embodiment described above. Is.

(1) Sliding test First, a pair of tube container packaging materials 10 according to the present invention were prepared. In this case, the first sealant layer 2 located on the outer surface of the tube container packaging material 10 has a resin and wear-resistant particles contained in the resin. Next, the pair of tube container packaging materials 10 were brought into contact with each other on the surface on the side of the first sealant layer 2, and a slip test between the two was carried out.

As the measuring device used in the slip test, TR-2 of Toyo Seiki Seisakusho Co., Ltd. was used, and a measuring method satisfying JISK-7125 was carried out.

The test conditions were N = 3, 100 mm / min.

Further, in this test, in addition to conducting a slip test by bringing the tube container packaging materials 10 according to the present invention containing wear-resistant particles into contact with each other in the first sealant layer 2, the slip test is carried out in the first sealant layer 2. A packaging material 10 for a tube container was prepared as a comparative example containing no wear-resistant particles. The tube container packaging material 10 as a comparative example has the same structure as the tube container packaging material 10 according to the present invention, except for the first sealant layer 2. Then, the tube container packaging materials 10 as a comparative example were brought into contact with each other on the surface on the first sealant layer 2 side, and a slip test between the two was carried out.

The test results are shown in Table 1.

As shown in Table 1, the tube container packaging material 10 according to the present invention has both a static friction coefficient and a dynamic friction coefficient smaller than those of the tube container packaging material 10 according to the comparative example, whereby the tube container according to the present invention is used. It was found that the packaging material 10 has improved wear resistance on its outer surface.

(2) Rubbing test (Gakushin test)
Next, a rubbing test was carried out on the metal plate-packaging material assuming molding and the packaging material-packaging material assuming transportation.

As the measuring device, FR-2 of Suga Test Instruments Co., Ltd. was used, and a measuring method satisfying JIS-L-0849 was carried out.

In this case, a weight of 200 g was used.

In the metal plate-wrapping material rubbing test, a strip-shaped packaging material (30 mm) was attached to the base, and the metal plate was applied to the upper ground.

In the packaging material-wrapping material rubbing test, a strip-shaped packaging material (30 mm) was attached to the base, and a strip-shaped packaging material (30 mm) was also applied to the upper ground.

In this rubbing test, the packaging material according to the present invention and the packaging material as a comparative example were used as in the slip test. In addition, the rubbing test was repeated 100 times and 300 times, and as a result, half of the scratches on the surface of the packaging material were counted. If the number of scratches per packaging material is 20 or more, the result of the rubbing test is x, and if the number of scratches is 10 or more and less than 20, the result of the rubbing test is △, and the number of scratches is less than 10. For those, the result of the rubbing test was marked as ◯.

The results of the rubbing test are shown in Tables 2 and 3.

As shown in Tables 2 and 3, it was found that the packaging material according to the present invention reduced scratches when rubbed multiple times.

(3) Transport test Next, a tube container made of the packaging material according to the present invention described above was prepared, and 80 g of the contents was filled in the tube container.

A plurality of tube containers containing contents were housed in a cardboard box, and vertical vibration (13 Hz) was performed for 3 hours to measure the presence or absence of scratches on the outer surface of the tube container.

Next, a tube container made of the packaging material according to the above-mentioned comparative example was prepared, and 80 g of the contents was filled in the tube container.

A plurality of tube containers containing contents were housed in a cardboard box, and vertical vibration (13 Hz) was performed for 3 hours to measure the presence or absence of scratches on the outer surface of the tube container.

As a result of such a transportation test, the number of scratches on the surface of the packaging material was counted. If the number of scratches per tube container is 20 or more, the result of the transportation test is x, and if the number of scratches is 10 or more and less than 20, the result of the transportation test is △, and the number of scratches is less than 10. For those, the result of the transportation test was marked as ○.

The results of the transportation test are shown in Table 4.

As shown in Table 4, it was found that the packaging material of the present invention had less scratches during transportation.

2 1st sealant layer 3 Base material layer 3a Printing part 3A Printing base material layer 4 Gas barrier layer 5 2nd sealant layer 10 Tube container packaging material 20 Tube container

Claims (6)

A first sealant layer / a printed substrate layer / a second sealant layer arranged in order from the outer surface to the inner surface, and the first sealant layer located on the outer surface of the end portions formed into a tubular shape and overlapped with each other. In a tube container packaging material for manufacturing a tube container by heat-sealing the second sealant layer located on the inner surface.
The first sealant layer has a resin and wear-resistant particles contained in the resin, and the wear-resistant particles are contained in the first sealant layer in the range of 0.2 to 6% by weight.
When the packaging materials for tube containers were brought into contact with each other in the first sealant layer and a slip test was performed, the coefficient of static friction was 0.18 to 0.22 , and the coefficient of dynamic friction was 0.16 to 0.20. ,
Both the first sealant layer and the second sealant layer are made of low-density polyethylene or medium-density polyethylene.
The wear-resistant particles in the first sealant layer are made of silicone, which is a packaging material for tube containers. The packaging material for a tube container according to claim 1 , wherein the printed substrate layer has gas barrier properties. The packaging material for a tube container according to claim 1 or 2 , further comprising a gas barrier layer. A tube container packaging material provided with a first sealant layer / a printing substrate layer / a second sealant layer arranged in order from the outer surface to the inner surface is formed into a cylindrical shape and is located on the outer surface of the overlapped ends. In the tube container obtained by heat-sealing the first sealant layer and the second sealant layer located on the inner surface.
The first sealant layer has a resin and wear-resistant particles contained in the resin, and the wear-resistant particles are contained in the first sealant layer in the range of 0.2 to 6% by weight.
When the tube containers were brought into contact with each other in the first sealant layer and a slip test was performed, the static friction coefficient was 0.18 to 0.22, and the dynamic friction coefficient was 0.16 to 0.20.
Both the first sealant layer and the second sealant layer are made of low-density polyethylene or medium-density polyethylene.
A tube container in which the wear-resistant particles in the first sealant layer are made of silicone . The tube container according to claim 4 , wherein the printed substrate layer has gas barrier properties. The tube container according to claim 4 or 5 , further comprising a gas barrier layer.

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