JP2019119517A - Tube container - Google Patents

Abstract

To provide a tube container capable of improving light shielding property of a joint of a body and suppressing deterioration of contents with a simple configuration.SOLUTION: A tube container 1 in which a substantially rectangular light shielding laminated film 10 is curved to form a side seam portion 11 in which right and left side portions are joined to form a cylindrical body portion 2 and a head portion 3 having a shoulder portion 13 and a pour-out port portion 14 continuous with the same is joined to one end 12 in a cylinder axial direction of the body portion, has a light shielding tape 20 attached to a container inner surface side of the side seam portion from the one end 12 to the other end 15 of the body portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tube container for filling and packaging contents in food, cosmetics, medicines, daily necessities such as toothpaste, etc. In particular, the light shielding property prevents deterioration of the contents and maintains quality over a long period of time The present invention relates to a tube container that can be

  2. Description of the Related Art Conventionally, tube containers capable of containing and discharging viscous contents are widely used for food, daily necessities such as toothpaste, medicines, cosmetics, and the like. The tube container is formed by cutting the laminated sheet into a substantially rectangular shape of a predetermined size, making the ends thereof abut, or superposing them into a tubular shape, and joining the butting portions or the overlapping portions. ing. This bonding is performed by utilizing the thermal adhesiveness of the material of the laminated sheet, and is performed by a method such as heat sealing, high frequency sealing, impulse sealing, ultrasonic sealing or the like.

  The tube container is required to have various characteristics depending on the contents. For example, in addition to making the remaining amount of contents visible, the tube container is required to be transparent for reasons such as the appearance beauty. On the contrary, when the contents are easily deteriorated by light, the tube container is required to have a light shielding property. And in order to provide light-shielding property, applying a light-shielding material to the laminated film of the trunk | drum which comprises a tube container conventionally, the shoulder part joined to a trunk | drum, a pouring-out part, etc. is performed.

  For example, Patent Document 1 discloses a tube container provided with a light shielding layer formed of a synthetic resin formed by adding phthalsiaquin blue or carbon black and further metal powder, and the color of the contents affects the appearance of the tube container. It is said that the contents will not be altered by external light.

  Further, Patent Document 2 discloses a tube container composed of a laminated sheet in which a metal container is laminated on a polyester layer in a tube container, and that it is possible to obtain a light shielding property as well as a gas barrier property.

  In recent years, products susceptible to the outside world have been marketed and stored as contents in tube containers, but some of these products have more severe light shielding when stored. Some are required. In this case, it is possible to thicken the light shielding layer to improve the light shielding property, but when the light shielding layer is thick, there is a problem that the flexibility of the tube container is lost.

  Further, as in the prior art described above, as a problem that can not be solved by simply applying a light-shielding material to the tube container, the joint of the body of the tube container is subjected to heating, pressure or tension during heat sealing. As a result, the light shielding performance may be inferior to the other portions of the trunk. Therefore, as illustrated in FIG. 6 and FIG. 7, light 53 leaks from the joint portions 52 and 62 of the laminated films 51 and 61 of the body portions 50 and 60, and is linearly degraded in the contents 54 along the joint portions. Portion 55 may be formed, and a countermeasure has been required.

Japanese Utility Model Publication No. 57-36602 JP 10-250751 A

  Then, this invention makes it a subject to provide the tube container which can improve the light-shielding property of the junction part of a trunk | drum by comparatively easy structure, and can suppress a quality change of the contents.

In order to solve the above-mentioned subject, the invention concerning claim 1 of the present invention is:
A substantially rectangular light shielding laminated film is curved to form side seams in which both left and right sides are joined to form a tubular body, and a shoulder portion and an outlet continuing from the shoulder at one end in the cylinder axial direction of the body. A tube container having a head portion joined thereto, wherein a light shielding tape is attached to the container inner surface side of the side seam portion from the one end to the other end of the body portion. Tube container.

The invention according to claim 2 of the present invention is
The tube container according to claim 1, wherein the light shielding tape has any one of a light shielding ink layer, an aluminum foil, a metal vapor deposition film, and a black polyethylene film.

The invention according to claim 3 of the present invention is
The tube container according to claim 1 or 2, wherein the head includes at least 40% of carbon black.

The invention according to claim 4 of the present invention is
The tube container according to claim 1 or 2, wherein the head includes at least 25% of titanium oxide.

  According to the invention of the first aspect of the present invention, the light leaking from the side seam portion is shielded by the light shielding tape stuck from the inner surface side of the container, whereby the contents filled in the container are sided. Accordingly, it is possible to provide a tube container in which light does not leak from the seam portion, and the contents which are easily deteriorated by the light are less likely to be deteriorated.

  According to the second aspect of the present invention, it is possible to easily obtain a light shielding tape exhibiting a good light shielding property, and to provide a tube container having an excellent light shielding property at the side seam portion.

  Further, according to the third aspect of the present invention, the light leaking from the head joined to the body can be shielded by the carbon black, and the deterioration of the contents by the light can be further suppressed.

  According to the fourth aspect of the present invention, light leaked from the head joined to the body can be shielded by titanium oxide, and deterioration of the contents due to light can be further suppressed.

It is an external appearance schematic diagram of the tube container of this invention. It is a schematic diagram which shows the example of the laminated constitution of a light shielding tape. It is a schematic diagram of the cross section of the trunk | drum of the tube container of this invention. It is a schematic diagram of the cross section of another trunk | drum of the tube container of this invention. It is a schematic diagram which shows the example of a layer structure of the trunk | drum of the tube container of this invention. It is explanatory drawing of the aspect to which the content denatures with the light which leaks in the conventional tube container. It is explanatory drawing of the aspect to which the content denatures by the light which leaks in another conventional tube container.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.

  FIG. 1 is a schematic external view of a tube container 1 according to the present invention, in which a light shielding laminated film 10 is curved to heat-seal a side seam portion 11 welded by welding the left and right ends thereof. The body portion 2 is formed as a shape, and the head portion 3 including a dome-like shoulder portion 13 formed by resin molding and the outlet port portion 14 continuous thereto is bonded or welded to one end 12 in the cylinder axial direction of the body portion 2 The tip end of the spout portion 14 is open and serves as a spout of the content, and the other end 15 of the barrel portion 2 in the cylinder axial direction is formed in the aspect opened as the inlet 16 for injecting the content. Ru.

  The spout portion 14 is covered with an openable screw cap 17 for sealing the spout. The filling container 16 can be in a sealed state of the tube container 1 by adhering or welding the other end 15 in such a manner that the filling container 16 is crushed flat after the filling of the content. In addition, below, let the direction which makes the cylindrical trunk | drum 10 into a section be a horizontal direction, be orthogonal to this, and let the direction which connects the opening part of both ends be a vertical direction.

  A light shielding tape 20 is attached to the inner surface side of the tube container 1 of the side seam portion 11 from one end 12 to the other end 15. The light shielding tape 20 is an adhesive tape that exhibits a light shielding property by having a light shielding layer, and as its layer configuration, for example, as shown in FIG. The layer 22 has a tape base layer 21. As the light shielding layer 22, an aluminum foil, a metal vapor deposition film layer, a light shielding ink printing layer, a black polyethylene resin film, etc. can be applied suitably. The tape base layer 21 may use the same resin as the seal layer 23. Further, the tape base layer 21 may not be provided. The thickness of the light shielding layer 22 is preferably 15 to 95 μm in order to obtain a suitable waist and a sufficient light shielding property.

  In FIG. 3, the schematic diagram of the cross section of one Embodiment of the tube container of this invention is shown. The laminated film 10 of the body portion 2 is curved, the left and right ends are butted, and welded at the side seam portion 18 to form a tubular shape. Although the size of the trunk portion 2 is not particularly limited, one having a cylindrical diameter of 20 to 55 mm and a cylinder length of 70 to 170 mm is generally used. The side seam portion may be a side seam portion 19 in which the end portions are overlapped and welded as in the example of FIG. 4. In any of the examples, the light shielding tape 20 is attached to the inner surface side of the tube container of the side seam portion.

  The side seam portion has a light shielding property because the layer structure of the laminated film 10 is disturbed or destroyed when a force such as heat pressure or tension is applied at the time of welding, in the case of butting and superposition. It may be different from or damaged, and external light may leak from there and cause it to deteriorate. In the tube container of the present invention, it can be prevented by sticking the light shielding tape 20.

The laminated film 10 has a light shielding layer for imparting a light shielding property and a sealant layer for welding, and further layers can be laminated as appropriate in order to provide characteristics required for a tube container, for example, a sealant layer, A gas barrier layer, a light shielding layer, a printing ink layer, a base material layer, etc. can be laminated. As a specific configuration, for example, as shown in FIG. 5, the sealant layer 101 / base material layer 102 / printing ink layer 103 / light shielding layer 104 / gas barrier layer 105 / sealant layer 106 etc. are provided from the outside of the container. Not only this, but also from the outside of the container, light shielding sealant layer / gas barrier layer / polyethylene resin layer / printing ink layer / substrate layer / sealant layer, or also sealant layer / gas barrier layer / polyethylene resin layer / light shielding An ink layer, a substrate layer, a sealant layer, and the like can be appropriately selected.

  The light shielding layer of the laminated film 10 can be the same as the light shielding layer 22 of the light shielding tape 20. Moreover, as resin which comprises a sealant layer, polyolefin resin, such as low density polyethylene resin and non-oriented polypropylene resin, can be used suitably. Examples of the base material layer include polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate resin, nylon resin, ethylene-vinyl alcohol copolymer resin, and the like, but are not limited thereto. The thickness of the base material layer can be appropriately set according to the size and contents of the tube container, but is preferably 12 to 25 μm, for example.

  For the gas barrier layer, an ethylene-vinyl alcohol copolymer resin, a polyvinyl alcohol resin, a polyvinylidene chloride resin, a vapor deposited film of a metal oxide, an aluminum foil or the like can be used. When using aluminum foil, this can also be used as a light shielding layer. The thickness of the aluminum foil is preferably 16 μm, for example.

  The laminated film 10 is not limited to the above-described layers, and may be laminated with functional layers such as a hologram layer and a stain preventing layer, and, if necessary, an adhesive layer such as a two-component urethane adhesive. May be provided. Any of them can be optionally provided as long as the function and light shielding property of the tube container are not impaired. The lamination of the laminated film 10 can be performed by a dry lamination method using a urethane adhesive, an extrusion lamination method, or the like.

  The head 3 has a light shielding property. In order to impart light shielding properties, for example, an aluminum membrane is formed in a resin to be molded, the resin to be molded should be at least 40% containing carbon black, or the resin to be molded contains at least 25% titanium oxide It can be realized by adopting The head 3 can be molded, for example, by compression molding of a resin, but the invention is not limited thereto, and a known injection molding method, extrusion molding method, pressure molding method, draw molding method or the like may be applied. Further, a light shielding seal such as an aluminum foil or a metal vapor deposition film may be attached to the injection port at the tip of the injection port portion 14 to further improve the light shielding property. Further, the cap 17 to be put on the pouring spout portion 14 is not limited to a screw type, and may be a hinge type.

  As described above, according to the tube container of the present invention, the light leakage from the outside, particularly from the joint portion of the body portion, can be reduced by attaching a light shielding tape to the joint portion of the body portion. It can block more effectively than a tube container, and can prevent the deterioration of the contents by light.

DESCRIPTION OF SYMBOLS 1 ... Tube container 2 ... Body part 3 ... Head 10, 50, 60 ... Laminated film 101, 106 ... Sealant layer 102 ... Base material layer 103 ... Printing ink layer 104 · · · light shielding layer 105 · · · gas barrier layer 11, 18, 19, 52, 62 · · · side seam portion 12 · · · one end of the body portion 13 · · · shoulder portion 14 · · · outlet portion 15 · · · · · The other end 16 of the body portion · · · Injection port 17 · · · Cap 20 · · · light shielding tape 21 · · · tape base layer 22 · · · light shielding layer · · · sealing layer 53 · · · light 54 ... Contents 55 ... altered parts

Claims (4)

  A substantially rectangular light shielding laminated film is curved to form side seams in which both left and right sides are joined to form a tubular body, and a shoulder portion and an outlet continuing from the shoulder at one end in the cylinder axial direction of the body. A tube container having a head portion joined thereto, wherein a light shielding tape is attached to the container inner surface side of the side seam portion from the one end to the other end of the body portion. Tube container.   The tube container according to claim 1, wherein the light shielding tape has any of a light shielding ink layer, an aluminum foil, a metal vapor deposition film, or a black polyethylene film.   The tube container according to claim 1 or 2, wherein the head contains at least 40% of carbon black.   The tube container according to claim 1, wherein the head contains at least 25% of titanium oxide.

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