JPH0595847U - Synthetic resin container - Google Patents

Abstract

(57) [Summary] [Purpose] The technical challenge is to obtain a thin container without a large restriction on the shape by using a label with a high gas barrier property and a strong rigidity. , To obtain a thin and deep container with strong rigidity. [Structure] A label 1 having a high rigidity and a high gas barrier property over the entire outer peripheral surface of the cylindrical wall 7 and the entire lower surface of the bottom wall 9 of a thin container body 6 of a synthetic resin injection molded product having a bottomed cylindrical shape.
Is fixed as an insert material, the mechanical strength of the entire container is increased by the rigidity of the label 1, and the restriction on the shape of the container to be formed is reduced by using the label 1 as an insert material. ..

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thin and deep synthetic resin container having excellent gas barrier properties.

[0002]

[Prior Art]

 As a simple and thin container having a high gas barrier property, a container made of a laminated sheet of paper, Eval resin film and polyester resin film is known.

This conventional container exhibits a high gas barrier property due to the properties of the EVAL resin, and since the paper layer is located on the surface, it can exhibit excellent decorative properties by utilizing gravure printing or offset printing. There is an advantage to say.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the shape of the container that can be molded is greatly limited because the paper layer cannot be greatly extended and deformed, and there is a problem that a deep container cannot be obtained. there were.

Further, since it is necessary to deform the paper layer, there is a problem in that the rigidity of the paper layer cannot be strengthened, and thus a container having a high rigidity cannot be obtained.

Therefore, the present invention has been devised to solve the above-mentioned problems in the prior art. It uses a label having a high gas barrier property and a high rigidity, and is not significantly limited in shape. The technical issue is to form a thin container, and the objective is to easily obtain a thin deep container with high gas barrier properties and strong rigidity.

[0007]

[Means for Solving the Problems]

 Means of the present invention for intermittently solving the above-mentioned technical problems include an injection-molded product made of a synthetic resin and a thin container main body having a cylindrical shape with a bottom, and a main body layer formed of strong paper or synthetic paper. It is constructed by laminating a barrier layer formed of a material with a high gas barrier property on the inside, and covers the entire outer peripheral surface of the cylinder wall of the container body and the entire lower surface of the bottom wall, and has a label fixed as an insert material. And in.

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.

An adhesive layer may be provided between the barrier layer and the main body layer and on the inner surface of the barrier layer.

[0010]

[Action]

 The label has a laminated structure of a barrier layer formed of a synthetic resin material having a high gas barrier property and a main body layer formed of a strong paper or a synthetic paper, so that the label exhibits a high gas barrier property and can be compared. It has a high self-shape retention ability.

Therefore, when this label is used as an insert material and mounted in a molding die, specifically, on the cavity side molding die, it is easy to handle and has a comparatively high self-shape. By using the holding ability, it is possible to accurately achieve the setting at the set position in the molding die, and the attached label is not deformed or displaced inadvertently.

At the same time when the container body is molded, the container body and the label are simultaneously molded by injecting a molten resin material into a molding die that is fitted with a label that is an insert material and clamped. Achieves strong welding and fixation, and the molding of the container according to the present invention is achieved.

Since the label having the 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, it is possible to exhibit a relatively high gas barrier property as the entire container. As a result, it has an excellent ability to store and hold contents.

Since the label having the strong body layer 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 sufficiently thin. Also, the cylindrical label strongly reinforces the mechanical strength of the cylinder wall.

Since the main body layer of the label is formed of paper or synthetic paper, gravure printing and offset printing can be easily and easily performed on the outer surface of the main body layer. By forming a decorative layer on the outer surface of the main body layer by using, for example, good and preferable notation and decorative patterns can be drawn, and thereby 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 fixed to the container body. It can be surely strengthened, and can have higher mechanical strength.

[0017]

【Example】

 The label (see FIG. 2) 1 is formed by an adhesive such as Admer resin on the inner surface of the main body layer 3 which is made of a strong paper or synthetic paper, or a combination of paper and synthetic paper. A barrier layer 2 formed of a material having a high gas barrier property such as EVAL resin, aluminum, and a polyester resin is laminated via the adhesive layer 5 of No. 1, and the container body 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 exhibiting a strong adhesive force is laminated on both the synthetic resin material for molding 6 and the barrier layer 2, and the outer surface of the main body layer 3 is laminated. In addition, a decorative layer 4 on which decorative notation such as letters, trademarks, and patterns is applied by gravure printing or offset printing is also laminated as a coating layer.

As a specific example of the layer thickness of each layer in the label 1, about 80 μ for the main body layer 3, 15 μ for the barrier layer 2, 1 μ for both adhesive layers 5, and about 1 to 2 μ for the decorative layer 4 are suitable. ..

The container body 6 has a cylindrical shape with a bottom and a relatively high height with a taping taper, and an outer brim-shaped brim piece is provided on the upper end of a cylindrical wall 7 to which the first label 1 is fixed on the entire outer peripheral surface. 8 is integrally provided, and at the lower end of the cylindrical wall 7, a short cylindrical leg cylinder piece 10 is provided so as to extend downward.

A hole 11 is preliminarily formed in the center of the second label 1 which is fixed to cover the entire lower surface of the bottom wall 9 of the container body 6, and the hole 11 portion of the second label 1 is formed. At the same time, the gate is positioned when the container body 1 is injection molded.

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

[0022]

[Effect of the device]

 Since the present invention has the above-mentioned configuration, it has the following effects. Since the container body is injection-molded using a label that has been molded in a fixed shape and configuration in advance as the insert material, the sticking of the label to the container body can be achieved extremely strongly and evenly, and a high combination strength can be obtained. it can.

Since the strength of the combination of the container body and the label is high and the body layer of the label can be made sufficiently elastic, even if the container body is made sufficiently thin, the mechanical strength is high. It is possible to obtain a highly flexible container, reduce the amount of synthetic resin material required for one container, and achieve a reduction in material cost.

Since the entire label is relatively stiff, it is easy to handle, and it is not deformed or displaced unintentionally. Therefore, the label of the container body is used as an insert material. Injection molding can be achieved with high precision.

Since the label is used as an insert material for a container body to be injection-molded, it does not need to be stretched or deformed at all, and thus it is possible to sufficiently stiffen the container and the container to be molded. Without restricting the shape of the deep container, it is possible to easily obtain a deep container that is thin and yet strong enough.

[Brief description of drawings]

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

FIG. 2 is a partially enlarged sectional view in which a portion of a bottom wall in the embodiment shown in FIG. 1 is enlarged.

[Explanation of symbols]

 1; Label 2; Barrier layer 3; Body layer 4; Decorative layer 5; Adhesive layer 6; Container body 7; Cylinder wall 8; Collar piece 9; Bottom wall 10; Leg tube piece 11; Hole

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[Procedure amendment]

[Submission date] March 17, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

Claims (3)

[Scope of utility model registration request] 1. A gas barrier is provided inside a thin container body (6) made of a synthetic resin injection-molded product and having a bottomed tubular shape, and a body layer (3) molded of strong paper or synthetic paper. Comprised of laminated barrier layers (2) formed of highly flexible material, and the entire outer peripheral surface and bottom wall of the cylindrical wall (7) of the container body (6)
(9) A synthetic resin container comprising a label (1) that covers the entire lower surface and is fixed as an insert material. 2. The synthetic resin container according to claim 1, wherein the label (1) is formed by laminating a decorative layer (5) by printing or the like on the outer surface of the main body layer (3). 3. The label (1) comprising the adhesive layer (5) between the barrier layer (2) and the main body layer (3) and on the inner surface of the barrier layer (2) to constitute the label (1). The synthetic resin container described in 2.