JP2020172300A - Tube container - Google Patents

Abstract

To provide a tube container having a cylindrical trunk comprising a plastic film laminate, formed by using plastic parts for an outlet and a cap covering the outlet, and having high gas barrier performance.SOLUTION: A tube container 100 comprises; a trunk 10 which comprises a laminate having a gas barrier layer; an outlet 20; a cap 30 which covers the outlet. One trunk end is disposed so as to cover the outlet end. A disk 23 has a gas barrier layer on one surface, and the outside of the outlet is a flange. Both gas barrier layers have parts vertically compressed to approach each other along the outer periphery of the cylindrical outlet. In the part of the flange where the gas barrier layers are vertically compressed to approach each other, a gap between the gas barrier layers has a value smaller than a value totaling the thickness of the flange and the thickness of the innermost sealant layer of the laminate.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tube container. In particular, the present invention relates to a tube container having excellent gas barrier properties without impairing the advantages of the tube container using a plastic material.

A tube container is a container that can store a paste-like or semi-solid form inside and squeeze it out. Its shape is a hollow tubular structure with a circular or oval cross section, with a mouth and lid for squeezing the contents at one end, and the end, which is the other end, filled with the contents. It was later closed with a heat seal or the like.

Some tube containers are made of metals such as aluminum, tin, and lead, such as paint tube containers, which are suitable for contents that are easily altered by air, but have elasticity and resilience as a container. Is lacking.

Therefore, in recent years, so-called molded tubes using plastic materials have become mainstream. In addition, tube containers are widely used in daily life such as toothpaste, toiletry products such as facial cleansers, cosmetics such as creams, chemicals such as ointments, paste-like foods, spices, and adhesives.

When actually using a tube container, the contents can be squeezed out and taken out by simply applying pressure to the body with fingers, which is very convenient, but the gas barrier property is not sufficient depending on the manufacturing method. In some cases, it was said.

Generally, in the case of a tube container formed by blow tube molding, it is said that the gas barrier property of the entire tube container can be ensured to some extent by selecting a material having a gas barrier property.

However, in the case of a laminated tube, in the manufacturing method, after the plastic film laminate for the tube is made into a cylindrical shape, a plastic part is fused and closed to one opening, and the other opening is the content. After filling the material, heat seal and seal.

Therefore, even when the plastic film laminate forms a tubular body and has gas barrier properties, if the plastic parts at the openings do not have gas barrier properties, the gas barrier properties are impaired as a whole. There was a risk of oxidation and alteration of the contents.

On the other hand, Patent Document 1 describes a tube container provided with a gas barrier layer not only on the body but also on plastic parts. But even in this case. Since there is a distance between the gas barrier layer of the body and the gas barrier layer of the plastic part, there remains a problem that the gas barrier property of the tube container is lowered due to this gap.

Japanese Unexamined Patent Publication No. 2016-199280

The present invention has been made in view of this situation, and is a tube container having a tubular body made of a laminated body of plastic films, and using plastic parts for a spout and a cap covering the spout. It is an object of the present invention to provide a tube container having excellent gas barrier properties.

The invention according to claim 1 is a means for solving the above problems.
It ’s a tube container,
It consists of a body made of a laminate having a gas barrier layer and a sealant layer in the innermost layer, a spout made of plastic parts, and a cap covering the spout.
The spout and cap are made of plastic molding,
The body has a seal and is formed in a cylindrical shape.
The spout has a disk having the same diameter as the inner diameter of the cylindrical body, and a cylindrical spout having a diameter smaller than the diameter of the disk at the center thereof.
One end of the cylindrical body is arranged with a spout disk blocking the end.
The spout protrudes from the disk toward the outside of the container and
A gas barrier layer is provided on one surface of the disk inside the container.
Inside the cylindrical spout, a disk of plastic has a fragile part that separates the inside and outside of the container.
The outside of the cylindrical spout is a flange made of a disk.
The outer surface of the flange and the cylindrical body are bonded by bending the laminate constituting the body from the periphery to the inside.
The gas barrier layer of the laminated body constituting the body portion and the gas barrier layer provided on the disk have a portion of the flange that is compressed from above and below and is close to each other along the outer circumference of the cylindrical spout. Cylinder,
In the portion of the flange where the gas barrier layers are compressed from above and below and are close to each other, the distance between the gas barrier layers is smaller than the sum of the thickness of the flange and the thickness of the innermost sealant layer of the laminate. And
Further, the other end of the cylindrical body is a tube container characterized in that it is sealed and sealed at right angles to the longitudinal direction of the body.

Further, the invention according to claim 2 is
1. The gas barrier layer of the laminated body constituting the body portion and the gas barrier layer provided on the disk are characterized in that either or both of them are formed by a coating film formed by vapor deposition of an inorganic compound. It is a tube container described in.

Further, the invention according to claim 3 is
The tube container according to claim 1 or 2, wherein the gas barrier layer provided on the disk is provided by insert injection.

Further, the invention according to claim 4 is
The tube according to claim 1 or 2, wherein the gas barrier layer provided on the disk is formed by adhering a gas barrier film having a film formed by vapor deposition of an inorganic compound to the disk. It is a container.

Further, the invention according to claim 5 is
The tube container according to any one of claims 1 to 4, wherein the cap covering the spout and the spout are integrally molded via a hinge.

According to the present invention, it is possible to provide a tube container having a tubular body made of a laminated body of plastic films and having an excellent gas barrier property in a tube container formed by using plastic parts at a spout. ..

In particular, according to the invention of claim 2, the gas barrier layer of the laminated body constituting the body portion and the gas barrier layer provided on the disk are formed by a film formed by vapor deposition of an inorganic compound, whereby the gas barrier layer is formed. It can be a transparent layer, and is effective when it is necessary for designing or when it is inappropriate to use a metal foil such as an aluminum foil.

Further, in particular, when taking out the contents of the tube container, it is effective to obtain a tube container having excellent resilience of the container shape when the body of the tube container is pressed as compared with the case of using a metal foil.

In particular, according to the invention of claim 3, since the gas barrier layer provided on the disk is provided by insert injection, gas barrier properties can be more easily imparted to the spout, which is a molded plastic product. can do. Further, since the gas barrier layer is provided on one surface on the inner surface of the disk container, it is effective in improving the gas barrier performance.

In particular, according to the invention of claim 4, the gas barrier layer provided on the disk is formed by adhering a gas barrier film having a film formed by vapor deposition of an inorganic compound to the disk, whereby the extraction port is formed. The molding process has the advantage of being simplified. Further, the gas barrier film can be appropriately selected and used from appropriate means such as heat sealing, adhesion via an adhesive, and adhesion via an adhesive.

In particular, according to the invention of claim 5, since the cap is integrally molded with the spout via the hinge, the number of parts can be reduced, and therefore it is effective in improving productivity. In addition, since the cap can be easily opened and closed, it can be made more convenient as a tube container.

FIG. 1 is a schematic perspective view for explaining an embodiment of a tube container according to the present invention. FIG. 2 is a schematic partial cross-sectional view of the upper part of the tube container for explaining one embodiment of the tube container according to the present invention. FIG. 3 is a partially enlarged partial cross-sectional schematic view of the example shown in FIG. 2 in one embodiment of the tube container according to the present invention. FIG. 4 is a schematic partial cross-sectional view for explaining one embodiment of the laminated body constituting the body of the tube container according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 4. However, the present invention is not limited to the examples shown here. The present invention is limited by the claims.

FIG. 1 is a schematic perspective view for explaining an embodiment of a tube container according to the present invention.

The present invention relates to a tube container (100). This tube container has a body (10) made of a laminated body having a gas barrier layer and a sealant layer in the innermost layer, a spout (20) made of plastic parts, and a spout (20) made of plastic parts as well. It consists of a covering cap (30).

The spout (20) is a disk (23) having the same diameter as the inner diameter of the cylindrical body (10), and a cylindrical spout (23) having an outer diameter smaller than the diameter of the disk (23) at the center thereof. 21), and one end of the cylindrical body (10) is arranged with a disk (23) of the spout (20) closing the end.

The laminate constituting the body portion (10) is constructed by laminating necessary layers using a plastic film as a base material. For example, it can be a film having a thickness of 50 μm to 250 μm. The plastic film, gas barrier layer, sealant layer and the like will be described later in the description of FIG.

The spout (20) and the cap (30) are formed of a plastic molded product, and each may be molded as a separate member, or may be integrally molded, for example, via a hinge.

In the example shown in FIG. 1, each is an example of being molded separately. This molding may be performed by injection molding using, for example, a mold.

At this time, the plastic material is not particularly limited, but if moldability and adhesion to the body laminate are taken into consideration, for example, polyethylene resin, polyethylene terephthalate resin, polypropylene resin, cycloolefin polymer resin, etc. , Etc. can be appropriately selected.

The cap (30) may be opened and closed by fitting or screwing the spout (21) of the cap (30) and the spout (20), or may be integrally molded via a hinge. Can be opened and closed by fitting while still connected without removing the cap (30).

The body portion (10) has a sealing portion (11) in the longitudinal direction and is formed in a cylindrical shape. The seal portion (11) can be sealed by sticking a gassho or an envelope. In the case of sticking a gassho, the overhanging seal portion is folded and adhered to the body portion (10) to bond the surface of the body portion (10). Can be smoothed.

At one end (16) of the cylindrical body (10), the spout (20) has a disk (23) having the same diameter as the inner diameter (12) of the cylinder. It is arranged so as to close the end (16).

The disk (23) of the spout (20) is provided with a gas barrier layer on the inner surface of the tube container (100), which is effective in improving the gas barrier performance of the spout (20).

That is, in the tube container (100) according to the present invention, the gas barrier layer is provided on the laminate constituting the body portion (10), and the gas barrier layer is also provided on the disk (23) forming the spout (20). As a result, the entire tube container (100) is covered with the gas barrier layer, and a high degree of gas barrier performance can be realized.

Further, the other end of the body (17) having a cylindrical shape is crushed and flatly sealed by a seal (18) perpendicular to the longitudinal direction of the body (10), and the tube container (100) is sealed. ing.

Thus, according to the tube container (100) according to the present invention, it has a tubular body (10) made of a laminate of plastic films, a spout (20) and a cap (30) covering it. It is possible to provide a tube container (100) having excellent gas barrier properties in a tube container (100) constructed by using plastic parts.

Further, such a tube container (100) stores paste-like contents such as toothpaste, opens the container, and then pressurizes the body (10) with fingers when trying to take out the contents. The contents can be extruded, and can be repeatedly taken out and sealed by opening and closing the spout (20).

FIG. 2 is a schematic partial cross-sectional view of the upper part of the tube container for explaining one embodiment of the tube container according to the present invention.

In FIG. 2, the portion surrounded by a large ellipse in the figure is the above-mentioned spout (20). The spout (20) has a disk (23) having the same diameter as the inner diameter of the cylinder (12) and is surrounded by a flat ellipse in the figure, and is arranged so as to close the end of the body (16). There is. That is, the inner diameter of the cylinder (12) is the same as the diameter of the disk (22).

The surface of the disk (23) inside the tube container (100) has a gas barrier layer (24) on one surface. The gas barrier layer (24) covers the entire tube container (100) with the gas barrier layer contained in the laminate (15) constituting the body portion (1) to improve the gas barrier property of the tube container (100). It is effective for.

When the tube container is composed only of a plastic material and does not have a metal foil or a gas barrier layer of an inorganic compound, the gas barrier performance is limited, the storage stability of the contents is deteriorated, and the contents due to the environment. The risk of deterioration and deterioration of things is inevitable.

On the other hand, the tube container (100) according to the present invention has a gas barrier layer in the laminate constituting the body portion (10) and in the disk (23) portion of the spout (20). The entire tube container (100) is covered with a gas barrier layer to improve the gas barrier performance.

First, the laminate (15) constituting the body portion (10) has a gas barrier layer in the layer structure, and is covered over the entire body portion (10) to maintain a high level of gas barrier property. ..

The spout (20) has a gas barrier layer on one surface of the disk (23), and the diameter of the disk (23) is the same as the inner diameter of the end of the body (16). A circular coating is provided at the end (16) to maintain a high level of gas barrier properties.

The gas barrier layer (24) of the spout (20) does not impose any particular limitation on the method of forming the gas barrier layer (24), but when the spout (20) is molded, for example, a gas barrier is formed in an injection molding mold. The layer can be inserted and provided by the method of insert injection.

Alternatively, the gas barrier layer provided on the disk can be formed by adhering a gas barrier film having a film formed by vapor deposition of an inorganic compound to the disk. In this case, the extraction port molding process has the advantage of being simplified. Further, the gas barrier film can be appropriately selected and used from appropriate means such as heat sealing, adhesion via an adhesive, and adhesion via an adhesive.

Further, the disk (23) has a cylindrical spout (21) having an outer diameter smaller than the diameter (22) of the disk, protruding outward from the tube container (100).

Inside the cylindrical spout (21), the plastic of the disk (23) has a fragile portion (26) that separates the inside and outside of the tube container (100). For example, it is also effective to partially provide a thin portion for the fragile portion (26).

To take out the contents, the fragile portion (26) is destroyed, the tube container (100) is opened without any gap between the inside and outside, and the contents can be taken out from the spout (21). Therefore, in the spout (21) portion, the gas barrier property in the unopened state is ensured and maintained.

The method of opening the spout (21) does not limit the method, but it is a destruction triggered by the fragile part (26), for example, the bottom of the spout (21) is pushed downward. You may destroy it. Further, the shape of the fragile portion (26) is also arbitrary as long as it does not interfere with the gas barrier property and the opening property.

Further, the outer circumference of the cylindrical spout (21) is a flange (27) formed by a disk (23), and the surface of the flange (27) on the outside of the tube container (100) and the cylindrical body portion (10). ) Is attached to the inner surface of the tube container (100) by bending the laminated body (15) constituting the body portion (10) inward from the peripheral edge.

This bonding can be performed by heat sealing with a hot plate, ultrasonic sealing, or the like, and can be bonded by a sealant layer provided in the innermost layer of the laminated body (15) constituting the body portion (10). it can.

A recess (40) is formed in the portion of the flange (27), and the recess (40) is formed on the flange (27) so as to go around the outside of the spout (21). Details of this portion will be described later in the description of the example shown in FIG.

FIG. 3 is a partially enlarged partial cross-sectional schematic view of the example shown in FIG. 2 in one embodiment of the tube container according to the present invention.

The laminated body (15) constituting the body portion (10) is configured to include the gas barrier layer (13) in its layer structure, and is provided as an intermediate layer of the laminated body (15) in the example shown in FIG. There is.

The gas barrier layer (13) of the body portion (10) and the gas barrier layer (24) provided on the disk (23) are formed on the flange (27) along the outer circumference of the cylindrical spout (25). They are stacked one above the other and are close to each other, especially in the recesses (40) provided in the flange (27).

As described above, the surface of the flange (27) on the outside of the tube container (100) and the surface of the cylindrical body (10) on the inside of the tube container (100) are laminated to form the body (10). The body (15) is bent inward from the peripheral edge and adhered at the end of the body (16).

For example, a recess (40) can be formed by compressing this portion in the direction of the arrow (41). This compression can more effectively form the recess (40) when accompanied by heating. Further, it is preferable that the flange (27) of the spout (20) is flat for pressurization for this compression.

In this recess (40), as can be seen from the example shown in FIG. 3, the gas barrier layer (13) contained in the laminated body (15) forming the body (10) and the disk (23) of the spout (20). Is closest to the gas barrier layer (24) provided in the recess (40).
That is, in the recess (40), the distance between the gas barrier layers is smaller than the sum of the thickness of the flange (28) and the thickness of the innermost sealant layer (14) of the laminated body (15). ing. This is the effect of compression in the direction of the arrow (41), and the thickness of the flange (28) and the thickness of the sealant layer (14) are reduced to form a dent (40) in which the barrier layers are close to each other. it can.

Due to the proximity of the gas barrier layers to each other, the recess (40) acts as a bottleneck for gas permeation in terms of gas barrier performance, and is therefore effective in improving the gas barrier performance of the tube container (100).

For the formation of these gas barrier layers, for example, even when the insert molding method described above in the description of the spout (20) is used, or in the case of the laminated body (15) forming the body portion (10), for example. A gas barrier film having a gas barrier layer provided on the surface of the plastic film can be used.

A metal foil such as aluminum is also effective as a gas barrier layer, but care must be taken because sparks due to high frequencies may occur when cooking in a microwave oven is assumed.

Alternatively, in the case of a metal foil such as aluminum, it can be appropriately selected as compared with a gas barrier layer made of a transparent inorganic compound, considering that transparency cannot be obtained. Further, in the case of a tube container, when the tube container is pressed from the outside to push out the contents, it is also necessary to add the stability of the shape of the container to the selection requirement of the gas barrier layer depending on the application.

FIG. 4 is a schematic partial cross-sectional view for explaining an embodiment of a laminated body constituting a body portion of a tube container according to the present invention.

In the present invention, the laminate (15) constituting the body portion (10) of the tube container (100) has a gas barrier layer (13) and a sealant layer (14) using a plastic film as a base material.

The plastic film is a film made of a polymer resin composition, for example, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), Polyethylene or the like can be used and is appropriately selected according to the application.

In particular, when polypropylene or polyethylene terephthalate is used as a plastic film, it is more preferable in terms of film strength and price. In addition, when a stretched polyamide film is used, it is possible to impart toughness against piercing and impact resistance to the laminated body.

Further, the plastic film can be laminated with another layer via an adhesive layer to form a laminated body (15). The layer structure, material structure, thickness, etc. of the laminate (15) can be appropriately designed according to the required quality for the tube container (100).

In the example shown in FIG. 4, the laminate (15) is the sealant layer (1), the printing layer (9), the base plastic film layer (6), and the adhesive layer on the outside of the tube container (100) from the outside. This is an example composed of (7), a gas barrier layer (13), an adhesive layer (8), and a sealant layer (14) inside a tube container.

Here, an example in which a gas barrier film is used for the gas barrier layer (13), the gas barrier layer (13) is composed of an inorganic compound layer (5) and a plastic film layer (4).

For example, in the case of a gas barrier film, the plastic film layer (4) used is a film made of a polymer resin composition, for example, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene). Naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), polyethylene, etc. can be used, and are appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as a plastic film base material, it is more preferable in terms of film strength and price.

In the case of a gas barrier film, the gas barrier layer can be composed of a vapor-deposited layer and a coating layer of an inorganic compound. After providing an anchor coat on the plastic film, the vapor-deposited layer and the coating layer are sequentially provided.

For example, urethane acrylate can be used for the anchor coat layer of the gas barrier film. For the formation of the anchor coat layer, a coating method in which a coating material in which a resin is dissolved in a solvent is applied by a printing method such as gravure coating can be used, or a coating film can be formed by using a generally known coating method.

As a method for forming the vapor deposition layer, an inorganic compound such as SiO or AlO can be coated on a plastic film provided with an anchor coat layer by a vacuum vapor deposition method to form an inorganic compound layer by the vacuum vapor deposition method. .. Incidentally, the thickness of the thin-film deposition layer is preferably 15 nm to 30 nm.

As a method for forming the coating layer, an aqueous solution or water / alcohol containing at least one of a water-soluble polymer, (a) one or more alkoxides or hydrolysates thereof, or both, or (b) tin chloride. A coating agent containing a mixed aqueous solution as a main component can be applied onto a film and dried by heating to form an inorganic compound layer by a coating method to form a coating layer. At this time, by adding a silane monomer to the coating agent, it is possible to improve the adhesion with the anchor coat layer.

The inorganic compound layer has a gas barrier property only by the coating film by the vacuum vapor deposition method, but the coating layer which is the inorganic compound layer by the coating method is formed by superimposing on the vapor deposition layer which is the inorganic compound layer by the vacuum vapor deposition method to form a gas barrier layer. be able to.

By combining these two layers, a reaction layer of both layers is formed at the interface between the inorganic compound layer by the vacuum vapor deposition method and the inorganic compound layer by the coating method, or the inorganic compound layer by the coating method becomes an inorganic compound layer by the vacuum vapor deposition method. A dense structure is formed by filling and reinforcing defects or micropores such as pinholes, cracks, and grain boundaries that occur.

Therefore, the gas barrier film has higher gas barrier properties, moisture resistance, and water resistance, and has flexibility to withstand deformation due to an external force, so that it can be suitable as a packaging material.

Further, when SiO is used as the gas barrier layer, for example, the coating film is transparent, so that the contents can be visually seen from the outside of the pouch. These may be used properly according to the application and the required quality.

Further, the sealant layer (14) provided in the innermost layer of the laminated body (15) constituting the body portion (10) is heated and pressurized by stacking the laminated bodies (15) so that the sealant layers face each other. By heat-sealing, they adhere to each other, making it possible to form the body (10) of the tube container. Thereby, the seal portion (11) of the body portion and the seal portion (18) can be formed.

The sealant layer (1) on the outside of the tube container is provided on the surface of the laminate (15) that is outside the tube container (100). For example, when the body portion (10) is formed by pasting an envelope, or after pasting a gassho, It can be used when the protruding portion is folded and adhered to the body portion (10).

Of the thermoplastic resins, polyolefin-based resins are generally used as the material of the sealant layer (14) and the sealant layer (1) on the outside of the tube container. Specifically, low-density polyethylene resin (LDPE), medium Ethylene-based products such as density polyethylene resin (MDPE), linear low-density polyethylene resin (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, and ethylene-methacrylic acid resin copolymer. Use a resin, a blended resin of polyethylene and polybutene, a polypropylene resin such as a homopolypropylene resin (PP), a propylene-ethylene random copolymer, a propylene-ethylene block copolymer, or a propylene-α-olefin copolymer. be able to.

To form the sealant layer (14) and the sealant layer (1) on the outer side of the tube container, a molten resin can be formed by using an extruder or the like to form a layer on the laminated body (15). Alternatively, a sealant layer (14) and a sealant layer (1) on the outside of the tube container are formed on the surface of the laminate (15) by laminating the sealant material that has been formed into a film in advance by laminating. It is also possible to do.

Further, if necessary, for the purpose of improving the image as a product, displaying necessary information about the contents, and improving the design, the tube container (100) in the laminate (15) based on the plastic film is used. ) The print layer (9) can be provided on the layer that can be seen from the outside. The printing layer (9) may be provided on the outermost layer of the tube container (100) in consideration of adhesion and the like.

Further, the printing layer (9) may be provided on a part of the tube container (100), or may be provided over the entire surface of the tube container (100). Alternatively, as a method of providing the display unit without using the printing layer (9), for example, a printed sticker can be attached to the surface of the tube container (100).

Here, the printing method and the printing ink are not particularly limited, but among the known printing methods, printability on the plastic film layer, design such as color tone, adhesion, and safety as a container. It may be appropriately selected in consideration of sex and the like.

For example, it can be selected from known printing methods such as a gravure printing method, an offset printing method, a gravure offset printing method, a flexo printing method, a silk screen printing method, and an inkjet printing method. Among them, the gravure printing method can be preferably used in terms of productivity, printability on a plastic film, and high definition of a pattern.

As described above, according to the present invention, it is possible to provide a tube container having a tubular body made of a laminated body of plastic films and having a plastic part at a spout, and having excellent gas barrier properties. It is possible.

1 ... Sealant layer on the outside of the tube container 4 ... Plastic film layer 5 ... Inorganic compound layer 6 ... Base plastic film layer 7 ... Adhesive layer 8 ... Adhesive layer 9 ...・ ・ Printing layer 10 ・ ・ ・ Body 11 ・ ・ ・ Seal 12 ・ ・ ・ Cylindrical inner diameter 13 ・ ・ ・ Gas barrier layer 14 ・ ・ ・ Sealant layer 15 ・ ・ ・ Laminated body 16 ・ ・ ・ Body end 17 ・・ ・ The other end of the body 18 ・ ・ ・ Seal 20 ・ ・ ・ Spout 21 ・ ・ ・ Spout 22 ・ ・ ・ Disk diameter 23 ・ ・ ・ Disk 24 ・ ・ ・ Gas barrier layer 26 ・ ・ ・ Vulnerable Part 27 ... Flange 28 ... Flange thickness 30 ... Cap 40 ... Recess 41 ... Arrow 100 ... Tube container

Claims (5)

It ’s a tube container,
It consists of a body made of a laminate having a gas barrier layer and a sealant layer in the innermost layer, a spout made of plastic parts, and a cap covering the spout.
The spout and cap are made of plastic molding,
The body has a seal and is formed in a cylindrical shape.
The spout has a disk having the same diameter as the inner diameter of the cylindrical body, and a cylindrical spout having a diameter smaller than the diameter of the disk at the center thereof.
One end of the cylindrical body is arranged with a spout disk blocking the end.
The spout protrudes from the disk toward the outside of the container and
A gas barrier layer is provided on one surface of the disk inside the container.
Inside the cylindrical spout, a disk of plastic has a fragile part that separates the inside and outside of the container.
The outside of the cylindrical spout is a flange made of a disk.
The outer surface of the flange and the cylindrical body are bonded by bending the laminate constituting the body from the periphery to the inside.
The gas barrier layer of the laminated body constituting the body portion and the gas barrier layer provided on the disk have a portion of the flange that is compressed from above and below and is close to each other along the outer circumference of the cylindrical spout. Cylinder,
In the portion of the flange where the gas barrier layers are compressed from above and below and are close to each other, the distance between the gas barrier layers is smaller than the sum of the thickness of the flange and the thickness of the innermost sealant layer of the laminate. And
Further, a tube container characterized in that the other end of the cylindrical body is sealed and sealed at right angles to the longitudinal direction of the body. 1. The gas barrier layer of the laminated body constituting the body portion and the gas barrier layer provided on the disk are characterized in that either or both of them are formed by a coating film formed by vapor deposition of an inorganic compound. Tube container described in. The tube container according to claim 1 or 2, wherein the gas barrier layer provided on the disk is provided by insert injection. The tube according to claim 1 or 2, wherein the gas barrier layer provided on the disk is formed by adhering a gas barrier film having a film formed by vapor deposition of an inorganic compound to the disk. container. The tube container according to any one of claims 1 to 4, wherein the cap covering the spout and the spout are integrally molded via a hinge.

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