JPS5911093Y2 - packaging container - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a packaging container, and allows a lid to be easily attached to a container body.

Conventionally, there are various types of containers consisting of a container body and a lid made of synthetic resin.For example, a lid having an undercut portion is used as a joint structure between the container body and the lid.
It is common to use the elasticity of this undercut portion to fit it into the container body.

However, in such a container, the fitting portion of the lid cannot be undercut by about 0.8 to 1.0 mm, so the bonding force due to fitting is weak, and there is a risk that the lid may come off during transportation.

In addition, the lid can be fixed to the container body using partial adhesive tape, staples, etc., or by hanging a rubber band, or by attaching a thermoplastic resin sheet between the container body and the lid. The outer edge was heat-sealed.

However, when adhesive tape, staples, or rubber bands are used, it is inconvenient to handle as the lid is opened and closed many times, and even when heat-sealed, once the lid is removed, the lid must be covered again. As mentioned above, adhesive tape, staples, rubber bands, etc. must be used to attach the foam, and once the heat-sealed area is removed, the texture of the foamed surface will deteriorate and the appearance will not be good. there were.

Therefore, in this invention, the above-mentioned conventional drawbacks and inconveniences can be overcome.The structure is such that the main body of the container is formed from a foamed sheet of thermoplastic resin, and a corresponding lid is formed on the container. It is made of a non-foamed thermoplastic resin sheet that is thinner than the main body, and the edge of the lid is heat-sealed to one side of the edge of the container body, and the lid is opened and closed at the heat-sealed part. In addition, the lid has a rib that contacts the inner periphery of the container body and is concave downward along the inner periphery, and the lid has a ventilation hole on the edge that is not heat-sealed. The ventilation section has a part of the edge of the lid that protrudes upward and is more bulged than the rib, and the container body has a cutout on the front edge, The front edge is cut with a tongue whose outer shape is larger than the cutout, and by folding the tongue downward, it can be engaged with the edge of the container body where the cutout is located. It is characterized by being

Next, embodiments of this invention will be illustrated below with reference to the drawings.

Reference numeral 10 denotes a container body, which is made of a foamed thermoplastic resin sheet, preferably foamed polystyrene sheet, so that edges 11 and 12 are horizontal.

Reference numeral 20 denotes a lid pairing with the container body 10, which is a transparent non-foamed thermoplastic resin sheet that is thinner than the container body 10, preferably made of a high-impact polystyrene sheet with a thickness of 7 or less than the foamed sheet. It has horizontal edges 21 and 22.

Then, one edge 21 of the lid body 20 is heat-sealed 30 to one side of the longer one of the edges 11 and 12 of the container body 10, and the lid body 20 can be opened and closed at this heat-sealed portion 30. There is.

Reference numeral 13 denotes a cutout provided in the edge 11 on the front side of the container body 10, and the cutout 13 is not shown in the illustrated shape so as to be expanded outward from the base end. The side part is widened in a tapered shape.

Reference numeral 23 denotes a tongue piece having a bending base end corresponding to the base end of the cutout part 13, and the edge part 21 on the front side of the lid body 20.
The outer shape of the tongue piece 23 is the same as that of the cutout part 1.
For example, as shown in the figure, it has a tapered shape that widens outward from the bending base end to be larger than the tapered portion of the cutout portion 13.

By folding the tongue piece 23 downward from the bending base end, it can be engaged with the edge 11 of the container body 10 where the cutout part 13 is located.

In the figure, reference numeral 24 denotes a ventilation section that allows the inside of the container body 10 to communicate with outside air.The ventilation section 24 includes a portion of the edge 22 of the lid body 2o that is not heat-sealed, and a rib that will be described later. It has a more bulging shape.

Reference numeral 25 denotes a rib of the lid body 20 that abuts the inner periphery of the container body 10 and is concave downward along the inner periphery.

In addition to polystyrene, the foam sheet forming the container body 10 may also be polyethylene, polypropylene,
A foam sheet made of polyvinyl chloride or a copolymer mainly composed of polyvinyl chloride or the like is suitable;
In addition to high-impact polystyrene, various transparent sheets can be used as the transparent sheet forming the container body 10, but they must be made of the same material that can be heat-sealed to the container body 10.

In addition, the edge 11 of the container body 10 and the lid 20 described above
, 21 may cover the entire edge, or may be partially heat-sealed in the form of an appropriate number of lines.

This invention is constructed as described above, and the container body 10 is formed from a foamed sheet of thermoplastic resin, and the lid body is formed from a thinner transparent non-foamed thermoplastic resin sheet. 20 is heat fused 30 on one side of the edges 11 and 21
Since the heat-sealed portion is the opening/closing point, it can be opened and closed freely, and since the opening/closing point is not just a continuous hinge but the heat-sealed portion, the lid body 20 will not remain open even once opened. First, it is easy to act in the direction of closing the container body 10, and it is easy to cover the container body 10, making it easy to handle.

In addition, in order to securely attach the lid 20, the tongue piece 23, which is cut in the front edge 21 of the lid 20, is folded downward from the bending base end, and the cutout of the container body 10 is folded downward. The tongue piece 23, which is larger than the removed portion 13, may be pushed in and engaged with the edge 11 of the container body 10 where the removed portion 13 is located.

In this engaged state, since the tongue piece 23 is larger than the cutout part 13, it prevents the lid 20 from floating up and can reliably maintain the attached state. The 20 recessed ribs 25 come into contact with and follow the inner periphery of the container body 10, thereby stabilizing and reinforcing the position of the lid 20, which is thinner than the container body 10.

In addition, the lid body 20 has a part of the edge that is not heat-sealed protruding upward, and has a ventilation part 24 that is bulged out from the rib 25. , it can be formed into a positional relationship without any problem, ensures ventilation even when the lid body 29 is attached, and has the effect of preventing dew condensation inside. It is convenient because it also serves as a form of operation.

Further, in order to release the attachment fixing, the lid body 20 can be easily opened by raising the tongue piece 23 and popping it out from the cutout part 13.

In particular, in this invention, a lid body 20 having a tongue piece 23, a recessed rib 25, and a ventilation portion 24 and having a distinctive shape
Since it is made of a non-foamed sheet, it is easier to form a finer shape than the container body 10 made of a foamed sheet, and since it is formed from a thin, transparent non-foamed sheet, the movable side that should be opened and closed can be made of a foamed sheet. Compared to this, it can be made less rigid and flexible, and the flexibility of the tongue piece 23 can be fully utilized.

Conversely, the container body 10 with the cutout 13 is made of a foam sheet that is thicker and has greater slip resistance than the lid 20.
The stability when engaged with the tongue piece 23 is good.

Since the lid body 20 having the movable tongue piece 23 and the container body 10 having the cutout part 13 on the receiving side have different thicknesses and each have their own characteristics, conventionally It can exhibit a unique and excellent binding effect.

Therefore, in the above-mentioned manner, it is possible to easily and reliably fix the lid body 20, and it is convenient to open and close the lid body 20, and it is possible to prevent the lid body 20 from having to be opened and closed again depending on the type of the item to be packaged. This is extremely suitable in such cases.

Furthermore, when disposing of the container of this invention after use, the container body 10 and lid body 20 can be easily separated from the heat-sealed part on one side, making it easier to dispose of them. It becomes easier.

[Brief explanation of the drawing]

The figures illustrate the embodiment of the present invention, and Fig. 1 is a plan view of the lid in a fixed state, Fig. 2 is a front view of the same state as above, and Fig. 3 is a downward view of the main part. FIG. 4 is a plan view of the lid with the tongue piece taken out from the cutout, and FIG. 5 is a cross-sectional view taken along the line ■-■ in the front figure. 10... Container body, 11, 12...
Edge of container body, 13... Defected part, 20...
...Lid body, 21, 22... Edge of lid body, 2
3... tongue piece, 30... heat fusion part.

Claims (1)

[Claims for Utility Model Registration] 1. The container body is formed from a foamed thermoplastic resin sheet, and the corresponding lid is formed from a non-foamed thermoplastic resin sheet that is thinner and transparent than the container body. The edge of the lid is heat-sealed to one side of the edge of the container body so that the lid can be opened and closed freely. A concave rib is formed, and a vent is formed on the edge of the lid that is not heat-sealed.
The ventilation part has a part of the edge of the lid body that protrudes upward and is more bulged than the recessed rib, and the container body has a cutout part on the front edge part of the lid body. has a notched tongue whose outer shape is larger than the cutout, and can be attached to the edge of the container body where the cutout is located by folding the tongue downward. A packaging container featuring: 2 The cutout part of the container body is widened in a tapered shape on the outside, and the tongue piece of the lid body is formed into a tapered cut that widens outward from the base end for bending to a larger extent than the above-mentioned tapered part. The packaging container according to claim 1 of the above-mentioned utility model registration claim. 3. The packaging container according to claim 1 or 2 of the above-mentioned utility model registration claim, in which the lid body is made of a sheet having a thickness one or less than that of the container body. 4. The packaging container according to any one of claims 1 to 3 of the above-mentioned utility model registration claim, wherein the container body is formed from an expanded polystyrene sheet and the lid is formed from a high-impact polystyrene sheet.