JP2592156Y2 - Synthetic resin container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin and deep synthetic resin container having excellent gas barrier properties.

[0002]

2. Description of the Related Art A container made of a laminated sheet of paper, an Eval resin film and a polyester resin film is known as a simple and thin container having a high gas barrier property.

[0003] This conventional container exhibits high gas barrier properties due to the properties of the EVAL resin, and since the paper layer is located on the surface, it can exhibit excellent decorative properties using gravure printing or offset printing. There are advantages.

[0004]

However, in the above-mentioned prior art, since there is a restriction that the paper layer cannot be greatly extended and deformed, the shape of the moldable container is greatly limited, and a deep container is obtained. There was a problem that I could not do it.

Further, since the paper layer needs to be deformed, there is a problem that the paper layer cannot be made stiff, and thus a strong container cannot be obtained.

Accordingly, the present invention has been devised in order to solve the above-mentioned problems in the prior art, and uses a label having a high gas barrier property and a strong stiffness, without being greatly restricted in shape. It is an object of the present invention to form a thin container, and it is an object of the present invention to easily obtain a thin deep container having high gas barrier properties and strong stiffness.

[0007]

Means for Solving the Problems] solutions to technical problems described above
Means of the present invention to be determined, it has a thin-walled container body having a bottomed tubular shape with a synthetic resin injection molded article, the inner side of the main layer which is molded in and resilient paper or synthetic paper, gas barrier properties And a label fixed as an insert material, covering the entire outer peripheral surface of the cylindrical wall and the entire lower surface of the bottom wall of the container main body.

It is effective to form a label by laminating a decorative layer by printing or the like on the outer surface of the main body layer.

It is preferable to provide an adhesive layer between the barrier layer and the main body layer and on the inner surface of the barrier layer.

[0010]

Since the label has a laminated structure of a barrier layer formed of a synthetic resin material having high gas barrier properties and a main body layer formed of strong paper or synthetic paper, the label exhibits high gas barrier properties. In addition, it has a relatively high self-shape retention ability.

Therefore, when the label is inserted into a molding die, specifically, a cavity-side molding die, it is easy to handle and has a relatively high self-shape holding ability. Utilizing the method, it is possible to accurately achieve the mounting at the set position in the molding die, and further, the mounted label is not deformed or displaced unnecessarily.

By injecting a molten resin material into a molding die to which a label, which is an insert material, is mounted and clamped, and injection-molding the container body, simultaneously with molding the container body,
The solid welding and fixing of the container body and the label is achieved, and the molding of the container according to the present invention is achieved.

Since the label having a barrier layer having a high gas barrier property covers the entire outer peripheral surface of the cylindrical wall of the container body and the entire lower surface of the bottom wall, the container as a whole can exhibit relatively high gas barrier properties. And thus exhibit excellent content storage and holding capacity.
However, since the container body is an injection molded product, the main body of the container body
The cylindrical wall and the bottom wall that make up the part are
And the entire lower surface of the bottom wall with this label
The bell can be covered without forcing the bell
Structure, which allows for high-label barriers
Containers with high barrier properties that effectively function
Can be obtained .

Since the label having the body layer strong against the waist covers the entire outer peripheral surface of the cylindrical wall of the container body and is integrally fixed in a cylindrical shape, the cylindrical wall of the container body is made sufficiently thin. Also,
The mechanical strength of the cylindrical wall is strongly reinforced by the cylindrical label. That is, the label was used as the insert material.
High temperature and high temperature of molten resin material because it is an injection molded product
Due to the pressure, strong labels and thin container
A solid welding fixation can be reliably obtained, and
Thin container with high mechanical strength using the waist strength
Can be obtained.

Since the main body layer of the label is formed of paper or synthetic paper, gravure printing and offset printing on the outer surface thereof can be easily and easily achieved. By forming a decorative layer on the outer surface of the main body layer, good and preferable notations and decorative patterns can be drawn, whereby excellent decorativeness can be obtained.

By providing an adhesive layer between the barrier layer and the main body layer and on the inner surface of the barrier layer, the laminated structure of the label itself can be strengthened, and the label can be securely fixed to the container main body. It can be strengthened to be a more having a high mechanical strength, La
The bell is strong and the assembly target is an injection mold
Easy, safe, accurate and stable assembling
Because it is an insert material for injection molding,
The entire surface area forming the mold surface including the end face is
Grease, which reduces water and weather resistance.
A common barrier layer is covered and protected by a molten resin .

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A label (see FIG. 2) 1 is formed on an inner surface of a main body layer 3 composed of strong paper or synthetic paper, or paper and synthetic paper, with an adhesive such as Admer resin. A barrier layer 2 formed of a material having a high gas barrier property such as Eval resin, aluminum, or polyester resin is laminated via the first adhesive layer 5 thus formed, and a container is provided on the inner surface of the barrier layer 2. A second adhesive layer 5 formed of an adhesive such as an admer resin which exerts a strong adhesive force is laminated on both the synthetic resin material for molding of the main body 6 and the barrier layer 2, and an outer surface of the main body layer 3. Further, a decorative layer 4 on which decorative notations such as characters, trademarks, and patterns are applied by gravure printing, offset printing, or the like is also laminated as a coating layer.

As a specific example of the thickness of each layer in the label 1, the main body layer 3 has a thickness of 80 μm, the barrier layer 2 has a thickness of 15 μm,
It is appropriate that both the adhesive layers 5 have a thickness of about 1 μm and the decorative layer 4 has a thickness of about 1 to 2 μm.

The container main body 6 has a cylindrical shape having a bottom and a relatively high height having a draft taper, and an outer flange-shaped flange piece is provided on the upper end of a cylindrical wall 7 having the first label 1 fixed to the entire outer peripheral surface. 8 are integrally provided, and a short cylindrical leg tube piece 10 is provided at the lower end of the cylindrical wall 7 with the cylindrical wall 7 extending downward.

A hole 11 is previously formed in the center of the second label 1 which is fixed so as to cover the entire lower surface of the bottom wall 9 of the container body 6, and a portion of the hole 11 of the second label 1 is provided. Then, a gate for injection molding the container body 1 is located.

When an AS resin or a polypropylene resin is used as a molding material of the container body 6, an admer resin is most suitable as a molding material of the second adhesive layer 5.

[0022]

[Effects of the Invention] Since the present invention has the above-described configuration, the following effects can be obtained. Since the container body is injection-molded using the label molded in a predetermined shape and configuration as an insert material, the label can be extremely firmly and uniformly fixed to the container body, thereby obtaining a high combination strength. it can.

The combination strength of the container body and the label is high,
In addition, since the main body layer of the label can be made sufficiently stiff, a container having high mechanical strength can be obtained even if the thickness of the container body is sufficiently thin, and thus one container is required. The amount of the synthetic resin material can be reduced, and the material cost can be reduced.

Since the label as a whole is relatively strong, it is easy to handle, and is not deformed or displaced unnecessarily, so that the label of the container body can be used as an insert material. Injection molding can be achieved with high precision.

Since the label is used as an insert material of the container body to be injection-molded, it does not need to be stretched and deformed at all, whereby the stiffness can be sufficiently increased and the label of the container to be molded can be formed. Without limiting the shape, it is possible to easily obtain a deep container that is thin but sufficiently strong.

[Brief description of the drawings]

FIG. 1 is an overall vertical front view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing a part of a bottom wall in the embodiment shown in FIG. 1;

[Explanation of symbols]

 1; label 2; barrier layer 3; main body layer 4; decorative layer 5; adhesive layer 6; container body 7; cylindrical wall 8; collar piece 9; bottom wall 10;

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D 25/34 B65D 1/28

Claims (3)

(57) [Scope of request for utility model registration] A gas barrier is provided inside a thin container main body (6) having a cylindrical shape with a bottom and made of a synthetic resin injection molded article, and a main body layer (3) formed of stiff paper or synthetic paper. A barrier layer (2) formed of a highly conductive material is laminated on the cylindrical wall (7) of the container body (6).
(9) A synthetic resin container comprising: a label (1) fixed as an insert material so as to cover the entire lower surface. 2. The synthetic resin container according to claim 1, wherein a decorative layer (4) formed by printing or the like is laminated on the outer surface of the main body layer (3) to form the label (1). 3. A label (1) comprising an adhesive layer (5) provided between the barrier layer (2) and the body layer (3) and on the inner surface of the barrier layer (2). 3. The container made of synthetic resin according to 2.