JPS62158674A - Easy-open vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention provides a container consisting of a plastic cup body having a flange portion and a lid material, in which a part of the outer periphery of the flange portion and the lid material are simultaneously pressed and pressed. This invention relates to an easy-to-open container that can be opened from the body.

<Prior art> Conventionally, as an easy-open container using a plastic cup body having a flange part, as shown in Fig. 8, the flange part (1
), the container is sealed with a film-like lid material ◎ that has a tongue (2) for opening that is larger than the flange, and when opening the container, the tongue (2) is raised upward. A container that is opened by pulling it in a direction, as shown in Fig. 9, has a tongue (2) for opening, and a cut (3) thinner than the thickness of the flange is provided from the underside of the tongue (2), and the lid material is However, when opening the package, heat-seal the lid and cut the part outside the notch (3) of the tongue upward together with the lid, bend the lid, cut the part outside the notch, and remove the lid (I3) as shown in Figure 8-3. Flange (
1) Easy-to-open containers that can be opened by peeling off the container are used. However, these conventional containers are basically opened by peeling off the flange part (1) and the lid material (2), and since plastic cup bodies are generally manufactured by vacuum forming, pressure forming, etc. The thickness of the part (1) tends to be uneven, and the machine that heat-seals the cup body and the lid material tends to be uneven due to the conditions, so the lid material is heated to the flange part of the cup body. Defects tend to occur when sealing, and when the lid is opened, the lid material (B) tends to stretch due to the tensile force, making it difficult to obtain stable unsealing properties if the opening strength is too strong or too weak. It was close to possible.

<Purpose of the Invention> As a result of various studies aimed at solving these problems, the present invention provides a cup body in which a punched part with a partially non-punched part along the inner edge of the flange part is continuously provided around the entire circumference. By obtaining a container by sealing the flange part and the lid material,
It is an object of the present invention to provide a container that has excellent sealing properties and whose lid material can be opened easily and stably.

<Structure of the Invention> The present invention is made of plastic having a flange portion in which a punched portion with a partially non-punched portion is continuously provided along the inner edge of the flange portion, and seals a plastic body and a lid material. This is an easy-to-open container characterized by the fact that:

The present invention will be explained in detail with reference to the drawings, as shown in Fig. 3 (polypropylene obtained by vacuum forming, pressure forming, etc., vinyl chloride, polystyrene, saponified polypropylene/ethylene vinyl acetate copolymer/polypropylene, polypropyne/vinylidene chloride). /Plastic force having a flange made of a single layer or composite film such as polypropylene,
A punched part (5) having a partially non-punched part (4) is continuously provided along the inner edge of the flange part (1) of the plastic film, aluminum foil, or plastic film and aluminum foil. The cup body (B) is made of a laminated film or a moldable plastic material, and a layer of easy-to-open adhesive (7) is laminated between it and the flange of the cup body.
This relates to an easy-to-open container heat-sealed to A), and when the container is opened, the outer part (6) of the punched part (5) having a partially non-punched part (4) of the flange part is folded upward. As shown in Fig. 1-3, the outer part (6) of the punched part (4) is easily separated, and the lid (c) sealed to the flange part (1) is also removed from the punched part (5). It is peeled off together with the outer part (6) and can be easily opened.

Here, the number, width, etc. of the non-punched parts (4) can be changed depending on the material, thickness, etc. of the flange part (1), but the flange part (1) of the cup body is different from the lid material (B). Because it is thick, it peels off using the principle of leverage, and it has nothing to do with the strength of the seal (it can be peeled off easily).

In addition, as shown in Figure 2, the lid material (However) due to pressure during heat sealing.
The adhesive layer (7) tends to flow into the punched part (5) of the flange, and has stable adhesion even if the thickness of the flange part (1) is uneven.

In addition, as shown in FIG.
By making a notch (8) thinner than the flange in 4), it is possible to open the package easily.

Here, the shape, depth, width, etc. of the cut portion (8) can be changed depending on the material and thickness of the flange portion (1), the material of the lid member (I3), etc.

Also, as shown in Figure 4, there is a tongue part (9) on the flange for opening the seal.
It is even more effective if .

In addition, if a pull hole (10) for easy opening is provided in the tongue (9) for opening as shown in Fig. 5, it becomes possible to insert a finger into the pull hole (10) and pull the seal, making it even more similar to the pull top of an aluminum can. It becomes possible to open the package easily.

In addition, as shown in Figure 6, if a molded product (Q) laminated with an easily openable adhesive layer (7) is heat-sealed to the flange part (1) of the cup body, it can be easily opened in the same manner. In this case, it can also be reused as an overcap.

<Effects of the Invention> Unlike conventional containers, the easy-to-open container according to the present invention has excellent heat-sealing stability between the flange portion (1) of the plastic body (5) and the lid material (provided), and is heat-sealable. It is possible to open the package easily and stably regardless of the strength, and it can be used for desserts,
It is ideal as an easy-to-open container for packaging milk, side dishes, and other liquids.

Examples〉〈Example 1〉 A coextruded sheet of polypropylene/saponified ethylene vinyl acetate copolymer/polypropylene with a sheet thickness of 0.8 m//r11 was vacuum-formed to give a shape when opened as shown in Fig. 7. Part (9) available, width of 7272 part (1) 5.5 mI/r
When a molded product with a capacity of 70 cc of r1 was created, the thickness of the 7 langes (1) was 0.65 to 0.78 rrI/r1.
I was in Nihara Tsui. Along the inner edge of this molded product, the flange part (1) is 3m from the inner edge! /rrl width, 0.30~
A molded product was prepared in which a punched portion (5) having a thickness of 0.58 rr+//m and eight non-punched portions (4) having a width of 0.5 to 3 m/m was continuously provided.

After filling the container with contents such as jelly, a 0.09 roe thick lid material ■ made of a stretched nylon film coated with vinylidene chloride and coated with a polypropylene easy-open adhesive was placed at 160°C at a weight of 15.7 kg/1. When heat-sealed for 5 seconds, a container with stable adhesion could be obtained. When opening this container, it is easily opened by simply lifting the easy-open tip (9) of the flange part with your fingers. The outer part (6) of the continuous punched part (5th inch) of (1) was completely removed, and the lid material (c) was also removed at the same time, making it possible to completely open the package.

<Example 2> A molded product with a capacity of 250 cc and a flange width of 7 mI/rT1 was obtained by pressure forming a PVC sheet with a thickness of 0.3 m/r1 as shown in Fig. 3.The thickness of the 7 flange portions was 0.23~ 028%
It became uneven.

3 along the inner edge of the flange part (1) from the inner edge of this molded product.
, 5 m//ITl width <1~2 m/'r1 as shown in Figure 4
．． A cup body was prepared in which a punched portion (5) having six non-punched portions (4) each having a width of l was continuously provided.

Also, as the lid material 0, a 0.18 roe thick sheet coated with an easy-to-open adhesive is formed into a shape that can be fitted into the cup body (4) using the above force, and the cup body (4) is filled with contents such as kelp, margarine, etc. After that, fit the lid material (B) and heat at 190°C, 7kg.
When sealing was performed under the conditions of /+1.5 seconds, a container with stable adhesion could be obtained.

When opening the package, when you bend the outer part (6) upward from the punched part (5) of the 7272 part (1) of the plastic body with your fingers, the outer part (6)
By force, it was separated from the plastic body, and the molded lid material 0 was also removed at the same time, allowing it to be completely opened.

Moreover, the lid material 0, which was in close contact only with the outside part (6) of the flange part of the cup body which was removed at this time, was re-lowered into the remaining cup body, resulting in a resealable lid. I was able to do it.

[Brief explanation of drawings]

Fig. 1-1 is a schematic diagram of the container of the present invention, Fig. 1-2 is a sectional view of the container of the present invention, and Fig. 1-3 and Fig. 1-4 are perspective views showing the usage state of the container of the present invention. It is a diagram. Figure 2 is an enlarged cross-sectional view of the dotted line in Figure 1-2; Figure 3;
4, 5, and 6 are perspective or sectional views showing other embodiments of the container of the present invention. FIGS. 7-1 and 7-2 are explanatory views of the use of the container of the present invention using the cup body of FIG. 4. . FIGS. 8 and 9 are a perspective view and a sectional view of a conventional container. Patent applicant Sumitomo Bakelite Co., Ltd. Figure 8-3
Figure 9-1 Figure 4 Figure 6 Figure 7 Figure 5 Figure 7 Figure-2

Claims (5)

[Claims] (1) An easy-to-open seal characterized by sealing a lid material and a plastic cup body having a flange portion continuously provided with a punched portion having a partially non-punched portion along the inner edge of the flange portion. sexual container. (2) The easy-open container according to claim 1, wherein a cut thinner than the wall thickness of the flange is formed in a partially non-punched portion along the inner edge of the flange. (3) The easy-to-open container according to claim 1 or 2, wherein the flange portion has a tongue for opening. (4) The easy-open container according to claim 3, characterized in that the tongue portion for opening has an easy-open pull hole. (5) The easily openable container according to claim 1, 2, 3, or 4, wherein the lid material is a molded product.