JP2019189238A - Tube container packaging material and tube container - Google Patents

Abstract

To provide a tube container and a tube container packaging material capable of improving design.SOLUTION: A tube container 20 consists of, in the order from the outer surface to the inner surface, an outer face printing base material layer 1, an outer face sealant layer 2, an inner face printing base material layer 3, and an inner face sealant layer 5. The outer surface of the outer face printing base material layer 1 has an outer face printing part 1a on an area other than pasting ends 11,11, and the inner surface or the outer surface of the inner face printing base material layer 3 has an inner face printing part 3a on an area including the pasting ends 11,11.SELECTED DRAWING: Figure 1A

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 that can improve design properties.

  Conventionally, a tube container includes a packaging material for a tube container having a heat-sealable printing base material layer, a base material layer, and an inner surface sealant layer that are sequentially stacked from the outer surface toward the inner surface. It has been. Further, the printing substrate layer having heat sealability is printed on the outer surface thereof. The printing base material layer and the inner surface sealant layer are made of a material having heat sealing properties such as polyethylene.

  By the way, a tube container is obtained by overlapping a pair of bonded ends of the above-described packaging material for a tube container and joining the pair of bonded ends. In this case, since the pair of bonded end portions of the tube container are the portions to be joined, the outer surface printing is not performed on the pair of bonded end portions.

JP-A-2005-144821

  The present invention has been made in consideration of such points, and an object of the present invention is to provide a tube container packaging material and a tube container that can improve the design of the bonded end portions.

  The present invention relates to a packaging material for a tube container having a pair of bonded ends, and includes an outer surface printing base material layer / an inner surface printing base material layer / an inner surface sealant layer having heat seal properties arranged in order from the outer surface toward the inner surface. An outer surface of the outer surface printing base material layer is provided with an outer surface printing portion using a printing ink in a region other than the bonding edge portion, and the inner edge or outer surface of the inner surface printing base material layer includes the bonding edge. The tube container packaging material is provided with an inner surface printing portion using a printing ink in a region including the portion.

  This invention is a packaging material for tube containers which provided the outer surface sealant layer between the said outer surface printing base material layer and the said inner surface printing base material layer.

  The present invention is the tube container packaging material in which the pattern of the outer surface printing portion and the pattern of the inner surface printing portion are continuous with each other.

  The present invention is the tube container packaging material, wherein the inner surface printed base material layer has gas barrier properties.

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

  In the tube container formed by joining a pair of bonded end portions, the present invention includes an outer surface printing base material layer / an inner surface printing base material layer / an inner surface sealant layer arranged in order from the outer surface toward the inner surface, and the outer surface printing. In the outer surface of the base material layer, an outer surface printing portion is provided using a printing ink in a region other than the bonding end portion, and the inner surface or outer surface of the inner surface printing base material layer includes the bonding end portion. It is a tube container which provided the inner surface printing part using printing ink.

  This invention is a tube container which provided the outer surface sealant layer between the said outer surface printing base material layer and the said inner surface printing base material layer.

  The present invention is the tube container in which the pattern of the outer surface printing portion and the pattern of the inner surface printing portion are continuous with each other.

  The present invention is the tube container, wherein the inner surface printing base material layer has a gas barrier property.

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

  As described above, according to the present invention, it is possible to improve the design properties particularly at the pair of bonded end portions.

FIG. 1A is a side sectional view showing a laminate of packaging materials for tube containers according to the first embodiment. FIG. 1B is a side sectional view showing a laminate of packaging materials for tube containers according to the second embodiment. FIG. 2 is a view showing a method for manufacturing a tube container. FIG. 3 is a view showing a method for manufacturing a tube container. FIG. 4 is a side sectional view showing a packaged product including a tube container. FIG. 5 is a plan view showing an arrangement relationship between an outer surface printing portion and an inner surface printing portion of the tube container packaging material.

<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 below in more detail with reference to the drawings.

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

  The tube container 20 includes a cylindrical body portion 21 that includes the tube container packaging material 10, and a shoulder portion 13 and a mouth portion 14 that are produced by providing resin to the cylindrical body portion 21 by compression molding. . A cap 16 is attached to the mouth portion 14 of the tube container 20.

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

  First, as shown in FIG. 2, a tube container packaging material 10 according to the present invention is used, and a pair of bonded end portions (hereinafter also referred to as both end portions) 11 and 11 ′ of the tube container packaging material 10 are overlapped. Then, the outer surface and the inner surface of the superposed portion are heat-sealed and bonded together to form the heat-sealed portion 12, thereby manufacturing the cylindrical body portion 21. Next, as shown in FIG. 3, the cylindrical body 21 is mounted in a mold, and the shoulder 21 is inserted into one opening 21 </ b> A of the cylindrical body 21 by a normal method such as a compression molding method. The part 13 and the mouth part 14 are formed. In this way, the shoulder portion 13 and the mouth portion 14 are integrally formed in the one opening portion 21A of the cylindrical body portion 21, and the tube container 20 is manufactured. A cap 16 is attached to the mouth portion 14 of the tube container 20.

  Next, an appropriate amount of toothpaste and other contents 17 are filled from the other opening 21B of the cylindrical body 21 of the tube container 20, for example. Thereafter, 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 contents 17 is obtained.

  Next, referring to FIG. 1A, a tube container packaging material 10 for producing the tube container 20 will be described. As shown in FIG. 1A, the tube container packaging material 10 includes an outer surface printing base material layer 1, an outer surface sealant layer 2, and an inner surface printing base material layer 3 that are arranged in order from the outer surface toward the inner surface. And a laminate having an inner surface sealant layer 5. Among these, an outer surface printing portion 1a including a desired pattern is formed on the outer surface of the outer surface printing substrate layer 1 using a printing ink, and a desired pattern is formed on the inner surface of the inner surface printing substrate layer 3 using a printing ink. Is formed. In addition, you may provide the inner surface printing part 3a in the outer surface of the inner surface printing base material layer 3 using printing ink.

  Further, the outer surface sealant layer 2 and the inner surface printing base material layer 3 are bonded by dry lamination (DL), and the outer surface printing base material layer 1 and the outer surface sealing material layer 2 are bonded by extrusion lamination (EC). Furthermore, the inner surface printed base material layer 3 and the inner surface sealant layer 5 are joined by dry lamination (DL).

  In the present specification, “outer surface” and “inner surface” mean “outer surface” and “inner surface” when the tube container 20 is manufactured using the tube container packaging material 10.

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

  The outer surface printing base material layer 1, the outer surface sealant layer 2, and the inner surface sealant layer 5 may include, for example, polyethylene (PE). Specifically, you may produce the outer surface printing base material layer 1, the outer surface sealant layer 2, and the inner surface sealant layer 5 from the following materials.

  As the outer surface printing base material layer 1, the outer surface sealant layer 2, and the inner surface sealant layer 5, any material that can be melted by heat and fused to each other can be used. 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 Polyolefin resins such as copolymers, ethylene-methacrylic acid copolymers, ethylene-propylene copolymers, methylpentene polymers, polyethylene or polypropylene, acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid Modified with unsaturated carboxylic acid such as Acid-modified polyolefin-based resins, polyvinyl acetate resins, polyester resins, polystyrene resins, one or resin comprising more resins other like can be used.

  Moreover, as the inner surface printing base material layer 3, a polyethylene terephthalate (PET) layer can be used, and by printing on the PET layer 3, the inner surface printing portion 3a made of printing ink can be provided on the PET layer 3.

  Further, instead of using a PET layer as the inner surface printing substrate 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 properties may be used. A nylon (Ny) layer having a metal vapor deposition film on the surface and having gas barrier properties may be used.

  Next, the outer surface printing portion 1a provided on the outer surface of the outer surface printing substrate layer 1 having heat sealability and the inner surface printing portion 3a provided on the inner surface of the inner surface printing substrate layer 3 will be described.

  As shown in FIG. 5, the outer surface printing portion 1 a is provided in a region other than the pair of bonded end portions (both end portions) 11 and 11 ′ in the tube container packaging material 10. The reason why the outer surface printing portion 1a is provided in the region other than the pair of bonded end portions 11 and 11 ′ is that the pair of bonded end portions 11 and 11 ′ are formed on the outer surface and the inner surface of each other when the tube container 20 is manufactured. It is because it is the part which overlaps and joins.

  Therefore, the outer surface printing portion 1a is not provided at the pair of bonded end portions 11 and 11 'of the tube container packaging material 10.

  Since the outer printed portion 1a is not provided on the pair of bonded ends 11 and 11 ′ of the tube container 20 thus manufactured, the outer printed portion 1a is connected to the pair of bonded ends 11 and 11 ′. It becomes discontinuous.

  On the other hand, the inner surface printing portion 3a provided on the inner surface of the inner surface printing base material layer 3 is formed in a region including at least a pair of bonded end portions 11, 11 '. In this case, the outer surface printing portion 1a provided on the outer surface of the outer surface printing base material layer 1 and the inner surface printing portion 3a provided on the inner surface of the inner surface printing base material layer 3 have the same pattern, so that a pair of bonding is performed. A similar pattern that is continuous over the entire circumference of the tube container 20 including the end portions 11 and 11 ′ can appear outward. In addition, in FIG. 5, the continuous several packaging material 10 for tube containers before cut | disconnecting by the cutting line L is shown.

  In the said embodiment, although the inner surface printing part 3a is formed in the area | region containing at least a pair of bonding edge parts 11 and 11 ', the inner surface printing part 3a is extended over the whole region of the tube container packaging material 10 as needed. It may be formed.

  Next, the manufacturing method of the packaging material for tube containers is described with reference to FIG. 1A.

  First, printing is performed on the inner surface of the inner surface printing substrate layer 3, and thus the inner surface printing portion 3a made of printing ink is provided on the inner surface of the inner surface printing substrate layer 3.

  Next, the inner surface sealant layer 5 is bonded to the inner surface side of the inner surface printing substrate layer 3 by dry lamination (DL).

  Next, the outer surface sealant layer 2 is joined to the outer surface side of the inner surface printing base material layer 3 by dry lamination (DL) using polyethylene. On the other hand, printing is performed on the outer surface of the outer surface printing substrate layer 1, and thus the outer surface printing portion 1a made of printing ink is provided on the outer surface of the outer surface printing substrate layer 1. Next, the inner surface of the outer printed substrate layer 1 is bonded to the outer surface of the outer sealant layer 2 by extrusion lamination (EC). Thus, the packaging material 10 for tube containers is obtained.

  The tube container packaging material 10 thus obtained is formed in a cylindrical shape, and its 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 the cylindrical body portion 21.

  In this case, the outer surface printing base material layer 1 and the outer surface sealant layer 2 provided on the outer surface side of the tube container packaging material 10 and the inner surface sealant layer 5 provided on the inner surface side are melted and joined to each other. Part 21 is obtained.

  Next, the cylindrical body portion 21 is inserted into the mold, and the shoulder portion 13 and the mouth portion 14 are formed on the cylindrical body portion 21 using a compression molding method, so that the tube container 20 is obtained (FIG. 2). And FIG. 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 stored in a cardboard box. Thereafter, the plurality of tube containers 20 to which the cap 16 is attached are conveyed for each cardboard box.

  As described above, according to the present embodiment, the outer surface printing unit 1a is provided in a region other than the pair of bonded end portions 11 and 11 ′, and inner surface printing is performed in a region including the pair of bonded end portions 11 and 11 ′. Since the portion 3a is provided and the outer surface printing portion 1a and the inner surface printing portion 3a include the same pattern, the same pattern that is continuous over the entire circumference of the tube container 20 can be formed.

<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, a gas barrier layer 4 is attached to the inner surface printed base material layer 3 of the tube container packaging material 10 by dry lamination, and an inner surface sealant layer 5 is attached to the gas barrier layer 4 by dry lamination. It is attached. In the second embodiment shown in FIG. 1B, other configurations are the same as those of the first embodiment shown in FIGS. 1A and 2 to 5. In the second embodiment shown in FIG. 1B, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the second embodiment, the tube container packaging material 10 further includes a gas barrier layer 4 disposed between the inner surface printing base material layer 3 and the inner surface sealant layer 5, and the gas barrier layer 4 includes a metal foil. Or what has a base film and the vapor deposition film vapor-deposited on this base film can be used (refer FIG. 1B).

  Specifically, examples of the metal foil used as the gas barrier layer include an aluminum foil. Moreover, as a base film provided with a vapor deposition film, polyethylene resin, polypropylene resin, cyclic polyolefin resin, fluorine resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene- Styrene copolymer (ABS resin), polyvinyl chloride resin, fluorine resin, poly (meth) acrylic resin, polycarbonate resin, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, and polyamides such as various nylons Resin, polyimide resin, polyamideimide resin, polyarylphthalate resin, silicone resin, polysulfone resin, polyphenylene sulfide resin, polyethersulfone resin, polyurethane resin, acetal resin It can be used cellulose resin, a film or sheet of various resins other like.

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

  Moreover, as a vapor deposition film vapor-deposited on a base film, an aluminum vapor deposition film can be used, and VM-PET containing a base film and an aluminum vapor deposition film as a gas barrier layer can be used.

  In the first and second embodiments, the example in which the outer surface sealant layer 2 is provided between the outer surface printing base material layer 1 and the inner surface printing base material layer 3 has been described. When 1 has a sufficient heat sealing function, the outer surface sealant layer 2 is not necessarily provided.

  Next, specific examples of the present invention will be described.

(Example 1)
Example 1 corresponds to the first embodiment.

  As the tube container packaging material 10, a laminate having the following layer structure was prepared.

Outer surface printed part 1a / LDPE layer 1 (20 μm) / LLDPE layer 2 (100 μm) / PET layer 3 (12 μm) / Inner surface printed part 3a / LLDPE layer 5 (210 μm)
Here, the LDPE layer 1 is made of low density polyethylene and constitutes an outer surface printing base material layer. The LLDPE layer 2 is made of linear low density polyethylene and constitutes an outer surface sealant layer. The PET layer 3 is made of polyethylene terephthalate and constitutes an inner surface printing base material layer. Further, the LLDPE layer 5 is made of linear low density polyethylene and constitutes an inner surface sealant layer.

  In the packaging material 10 for a tube container, the outer surface printing portion 1a is formed in a region corresponding to other than the pair of bonded end portions 11 and 11 ′, and the inner surface printing portion 3a is a region corresponding to the bonded end portions 11 and 11 ′. Is formed.

  The outer surface printing portion 1a and the inner surface printing portion 3a have the same pattern, and thus, the same pattern can be formed continuously over the entire circumference in the tube container 20 made from the tube container packaging material 10.

  In this case, the pair of bonded ends 11, 11 ′ of the tube container 20 are not particularly conspicuous, and the contents are not covered outward via the pair of bonded ends 11, 11 ′. The design property of the tube container 20 in the bonding end portions 11 and 11 ′ can be enhanced.

  Moreover, about the tube container packaging material 10 in Example 1, the bonding strength between the pair of bonded end portions 11 and 11 ′ and the bonding strength between the tube container packaging material 10, the shoulder portion 13, and the mouth portion 14 are measured. did.

  As a comparative example, the only difference is that it has the outer surface printing portion 1a but not the inner surface printing portion 3a, except that it has the same packaging material for tube containers (Comparative Example 1) as in Example 1 and the outer surface printing portion 1a. However, the only difference is that the inner printed portion 3a is provided, and the same tube container packaging material (Comparative Example 2) as in Example 1 was prepared.

  About the packaging material for tube containers as these comparative examples 1 and 2, the joint strength between the shoulder part 13 and the mouth part 14 was measured.

  It turned out that the packaging material for tube containers which concerns on Example 1 has substantially the same joining strength with respect to the shoulder part 13 and the opening | mouth part 14 as the packaging material for tube containers as the comparative examples 1 and 2. FIG. Moreover, the pattern became discontinuous in the tube container by the comparative example 1 in a pair of bonding edge part. On the other hand, the pattern of the tube container according to Comparative Example 2 did not have the glossiness peculiar to external printing.

(Example 2)
Example 2 corresponds to the second embodiment.

  As the tube container packaging material 10, a laminate having the following layer structure was prepared.

Outer printed part 1a / LDPE layer 1 (20 μm) / LLDPE layer 2 (100 μm) / PET layer 3 (12 μm) / Inner printed part 3a / VMPTET layer 4 (12 μm) / LLDPE layer 5 (210 μm)
Here, the LDPE layer 1 is made of low density polyethylene and constitutes an outer surface printing base material layer. The LLDPE layer 2 is made of linear low density polyethylene and constitutes an outer surface sealant layer. The PET layer 3 is made of polyethylene terephthalate and constitutes an inner surface printing base material layer. Further, the LLDPE layer 5 is made of linear low density polyethylene and constitutes an inner surface sealant layer. The VMPTET layer 4 is made of polyethylene terephthalate having an aluminum vapor deposition film on the outer surface, and constitutes the gas barrier layer 4.

  In the packaging material 10 for a tube container, the outer surface printing portion 1a is formed in a region corresponding to other than the pair of bonded end portions 11 and 11 ′, and the inner surface printing portion 3a is a region corresponding to the bonded end portions 11 and 11 ′. Is formed.

  The outer surface printing part 1a and the inner surface printing part 3a have the same pattern, and thus, the same pattern can be formed continuously over the entire circumference in the tube container 20 made from the tube container packaging material 10. .

  In this case, the pair of bonded ends 11, 11 ′ of the tube container 20 are not particularly conspicuous, and the contents are not covered outward via the pair of bonded ends 11, 11 ′. The design property of the tube container 20 in the bonding end portions 11 and 11 ′ can be enhanced.

  Further, for the tube container packaging material 10 in Example 2, the bonding strength between the pair of bonded end portions 11 and 11 ′ and the bonding strength between the tube container packaging material 10, the shoulder portion 13, and the mouth portion 14 are measured. did.

  As a comparative example, the only difference is that it has the outer surface printing part 1a but not the inner surface printing part 3a, except that it has the same packaging material for tube containers (Comparative Example 3) as Example 2 and the outer surface printing part 1a. However, the only difference was that the inner printed portion 3a was provided, and the same tube container packaging material (Comparative Example 4) as in Example 2 was prepared.

  About the packaging material for tube containers as these comparative examples 3 and 4, the joint strength between the shoulder part 13 and the mouth part 14 was measured.

  It turned out that the packaging material for tube containers which concerns on Example 2 has substantially the same joining strength with respect to the shoulder part 13 and the opening part 14 as the packaging material for tube containers as the comparative examples 3 and 4. FIG. Moreover, the pattern was discontinuous in the tube container by the comparative example 3 in a pair of bonding edge part. On the other hand, the pattern of the tube container according to Comparative Example 4 did not have the glossiness peculiar to outer surface printing.

DESCRIPTION OF SYMBOLS 1 Outer surface printing base material layer 1a Outer surface printing part 2 Outer surface sealant layer 3 Inner surface printing base material layer 3a Inner surface printing part 4 Gas barrier layer 5 Inner surface sealant layer 10 Tube container packaging materials 11, 11 'A pair of bonded end portions 20 Tube container

JP 2005-144812 A

Claims (10)

In the tube container packaging material having a pair of bonded ends,
An outer surface printing base material layer / inner surface printing base material layer / inner surface sealant layer having heat sealing properties arranged in order from the outer surface to the inner surface;
Of the outer surface of the outer surface printing substrate layer, an outer surface printing portion is provided using a printing ink in a region other than the bonded end portion,
The packaging material for tube containers which provided the inner surface printing part using the printing ink in the area | region containing the said bonding edge part among the inner surface or the outer surface of the said inner surface printing base material layer.   The packaging material for tube containers of Claim 1 which provided the outer surface sealant layer between the said outer surface printing base material layer and the said inner surface printing base material layer.   The tube container packaging material according to claim 1, wherein the pattern of the outer surface printing portion and the pattern of the inner surface printing portion are continuous with each other.   The tube container packaging material according to any one of claims 1 to 3, wherein the inner surface printing base material layer has a gas barrier property.   The packaging material for a tube container according to any one of claims 1 to 4, further comprising a gas barrier layer. In a tube container formed by joining a pair of bonded ends,
An outer surface printing base material layer / an inner surface printing base material layer / an inner surface sealant layer arranged in order from the outer surface to the inner surface;
Of the outer surface of the outer surface printing substrate layer, an outer surface printing portion is provided using a printing ink in a region other than the bonded end portion,
The tube container which provided the inner surface printing part in the area | region including the said bonding edge part among the inner surface or the outer surface of the said inner surface printing base material layer using printing ink.   The tube container of Claim 6 which provided the outer surface sealant layer between the said outer surface printing base material layer and the said inner surface printing base material layer.   The tube container according to claim 6 or 7, wherein the pattern of the outer surface printing portion and the pattern of the inner surface printing portion are continuous with each other.   The tube container according to any one of claims 6 to 8, wherein the inner surface printed base material layer has a gas barrier property.   The tube container according to claim 6, further comprising a gas barrier layer.

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