JPS6229419Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to the structure of a synthetic resin packaging container for foods and the like.

Containers made of thermoplastic synthetic resin that are integrally vacuum-formed with a deep-dish-shaped pack body and a cover body that covers the pack body have traditionally been used to directly store sweets, cooked foods, chicken eggs, etc. or to display them. There is.

In this type of container, the connecting portion between the pack body and the cover body is bent against its elasticity, the cover body is covered with the pack body, and both upper and lower flanges around the cover body and the pack body are stapled. It is sealed by fixing it in place or by heat welding.

To open this type of container, the seal must be broken by picking the upper and lower flanges with the fingers of both hands, and force is applied in the vertical direction to separate the pack body and cover body. If the container was not held in place, the container would tip and the contents would be scattered.

In the present invention, in a container in which a pack body and a cover body are integrally molded from a thin synthetic resin sheet, cutting lines are carved continuously or intermittently along the connecting part of one side of the cover body and the pack body. At the same time, by pasting a pressure-sensitive adhesive tape to the connecting part from the outside of the container so as to cover this cut line, the adhesive tape part becomes a bendable hinge part when the cover body is attached to the pack body. By peeling off this adhesive tape, the cover body can be opened extremely easily from the pack body along the cut line.

Next, the present invention will be explained based on an example. In the figure, 1 is an egg packaging container vacuum-formed from a thin sheet of thermoplastic synthetic resin such as vinyl chloride resin or styrene resin into which an antistatic agent is kneaded. The container 1 consists of a pack body 2 and a cover body 3 integrally molded, and both the pack body 2 and the cover body 3 are provided with flange portions 4, 4 extending substantially horizontally outward from their respective peripheries. , and pack body 2
The cover body 3 and the cover body 3 are integrally connected to each other via a bendable connecting part 5 at one side thereof.

Reference numeral 6 denotes a cutting line that is continuously or intermittently carved along the connecting portion 5 to the end face of the flange portion 4. When cutting the cutting line 6 is carved intermittently, the connecting portion is cut as shown in the figure. 5, one or more extremely narrow uncut portions 7 are formed at arbitrary intermediate positions.

The pressure-sensitive adhesive tape 8 is attached to the connecting part 5 from outside the container 1 so as to cover it along the cut line 6, and is normally applied when the pack body 2 and cover body 3 are opened (see Fig. 2 and (see FIG. 3) and then affix the pressure-sensitive adhesive tape 8. In addition, the color of the adhesive tape 8 is changed to the color of the agricultural and forestry standards for the size of eggs, that is, red for LL egg packs, orange for L egg packs, and green for M egg packs.
If adhesive tape is attached to each container as blue for MS, purple for S, and brown for SS, it will be extremely easy to determine the type of container.

Contents (chicken eggs) in container 1 configured in this way
In order to open the lid, the upper and lower flange parts 4, 4 on the opposite side to the part to which the pressure-sensitive adhesive tape 8 is applied are put together and sealed in appropriate places 9 with staples or heat welding, as shown in FIG. If the cut line 6 is continuous from end to end along the length of the connecting portion 5, just peeling off the pressure sensitive adhesive tape 8 will connect the cover body 3 and the pack. Main body 2
can be opened on one side thereof, and when the cutting lines 6 are cut intermittently and the uncut portions 7 are extremely narrow, no force is required to peel off the connecting portions 5.
It goes without saying that the present invention can also be applied to a pack body such as a rectangular box shape in plan view, in which a cover body covering the pack body is formed so as to be integrally connected at one side.

Additionally, as shown by the dashed line in FIG. 2, pressure sensitive adhesive tape 8 is used for positioning or feeding the container 1.
A circular hole 10 may be punched through both the thin plate sheet of the continuous portion 5 and the thin plate sheet of the continuous portion 5.

In summary, according to the present invention, in a container in which a pack body and a cover body are integrally molded from a synthetic resin thin sheet through a connecting part on one side of the two, the cut line is continuous along the connecting part. A pressure-sensitive adhesive tape is attached to the connecting part from the outside of the container so as to cover the cut line, and this pressure-sensitive adhesive tape is previously attached along the cut line. When the cover body is attached to the pack body, this adhesive tape serves as a hinge that bendably connects the two, and when the cover is opened, the pressure-sensitive adhesive tape is peeled off to reveal a cutting line. The cover body can be opened very easily from the pack body, and at this time, the contents are not scattered because the pack body and the cover body can be held with one hand.

In addition, if cutting lines are intermittently carved along the connecting portion, the cover body and the pack body will not be separated too much from side to side or misaligned back and forth when applying the pressure-sensitive adhesive tape. This also has the effect of making it possible to perform the tape pasting work smoothly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the container, Fig. 2 is a plan view of the pack body with the cover body opened, and Fig. 3 is a partially cutaway view taken along the line - in Fig. 2. The sectional view and FIG. 4 are perspective views showing the lid opening operation state. DESCRIPTION OF SYMBOLS 1... Container, 2... Pack body, 3... Cover body, 5... Connecting part, 6... Cut line, 7... Uncut part, 8... Pressure sensitive adhesive tape, 9... Sealing part.

Claims (1)

[Scope of utility model registration request] In a container formed by integrally molding a pack body and a cover body from a thin synthetic resin sheet through a connecting part on one side of the two, cut lines are carved continuously or intermittently along the connecting part. and a pressure-sensitive adhesive tape is attached to the connecting portion from the outside of the container so as to cover the cut line.