JPH07206021A - Using method of vessel body - Google Patents

Abstract

PURPOSE:To increase the usable value of the vessel body of a fit-packed vessel made of thin plastics. CONSTITUTION:On using a fit-packed vessel made of thin plastic, after an article has been contained in the vessel body 1 of the fit-packed vessel made of thin plastic, the opening of the vessel body 1 of the fit-packed vessel made of thin plastic is closed with an inner fit lid 2 or an outer fit lid 3 made of thin plastics.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of using a container body, and more particularly, to a method of using a container body of a thin plastic fitting packaging container.

[0002]

2. Description of the Related Art Conventionally, as a lid for closing an opening of a container body of a thin-walled plastic packaging container for packaging various kinds of products, etc., the lid body is provided within the opening of the container body. So-called inner fitting lid and outer fitting lid, which are made of thin plastic and are fitted to the circumference and the outer circumference of the opening, respectively, are used, and such inner fitting lid and outer fitting lid are used. Containers whose openings are closed in each of the bodies are generally referred to as the inner fit packaging container and the outer fit packaging container, respectively, and both are collectively referred to as the fit packaging container. These fitting packaging containers have been widely put to practical use because they can obtain a fairly high sealing property even though it is easy to close the container by light weight. However, this container body is dedicated to each of the inner fitting packaging container and the outer fitting packaging container. If the container body of this fitting packaging container can be used for both the inner fitting packaging container and the outer fitting packaging container, the utility value of the container body will be enhanced. However, such an attempt has not been made yet. The present inventor has arrived at the present invention as a result of repeated efforts to increase the utility value of the container body of the thin plastic fitting packaging container.

[0003]

According to the present invention, when a thin plastic fitting packaging container is used, the thin plastic fitting container is stored in the container body of the thin plastic fitting packaging container. A method of using a container body, characterized in that an opening of the container body of the plastic fitting packaging container is closed by an inner fitting lid body or an outer fitting lid body made of thin plastic.

The container body and lid of the fitting packaging container according to the present invention are both made of thin-walled plastic, and are usually formed from a thin sheet of thermoplastic synthetic resin, for example, vacuum forming, pressure forming and vacuum pressure forming. It is obtained by molding such as molding and press molding. Further, the thermoplastic synthetic resin is not particularly limited, but in practical use,
For example, olefin plastics such as polyethylene and polypropylene, acrylic plastics such as polymethylmethacrylate and acrylonitrile resin, vinyl plastics such as polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol and polyvinylidene chloride, polystyrene and acrylonitrile styrene resin. Styrenic plastics such as and aromatic polyesters such as polyethylene terephthalate are preferably used.

There are no particular restrictions on the shape of the container body and lid (which may be simply referred to as the container body and lid below, respectively) of the thin plastic fitting packaging container, but in practice, the container body is Usually, it has a bottomed inverted frustum shape and a tubular shape, and the lid body usually has a bottomed frustum shape and a tubular shape. Further, the shapes of the upper and lower bottom surfaces of the container body and the lid and the opening are, for example, circles such as circles, ellipses and ellipses, and polygons such as triangles, squares, pentagons and hexagons. The polygon may have a shape with rounded apexes (hereinafter also referred to as a substantial polygon). Of these, a substantially rectangular shape is preferable, and a substantially square shape and a substantially rectangular shape are particularly preferable.

The shapes of the opening of the container body and the lid must be of the same type. Also, the size of the opening of the container body is larger than the opening of the lid in the case of internal fitting,
In the case of outer fitting, it must be smaller than the opening of the lid.

The container body of the thin plastic fitting and packaging container according to the present invention has a projection provided on the upper part of the peripheral wall thereof so as to project inward of the container body and an outside of the container body from the opening peripheral edge of the container body. It is preferable that the container main body has a flange portion that is stretched toward and a hanging piece that extends downward from an outer peripheral edge of the flange portion. The projection on the peripheral wall of the container body may be provided intermittently or may be a continuous ridge. Further, it may be provided over the entire circumference of the opening of the container body, or may be provided intermittently. In the latter case, preferably, when the shape of the opening is polygonal or substantially polygonal, it is arranged at each apex angle or a portion corresponding to each apex angle, and when the shape of the opening is circular. Are arranged at positions symmetrical with respect to each other or at equal intervals.

In the container body of the present invention,
Downward is defined as the direction toward the bottom bottom surface of the container body.
The brim portion and the hanging piece are usually provided over the entire circumference of the opening of the container body, but they do not prevent being provided intermittently. Further, the hanging piece may be substantially vertical to the lower bottom surface of the container body, or may be obliquely extended outward. Furthermore, the lower end periphery of the hanging piece can be extended substantially parallel to the lower bottom surface of the container body.

The inner fitting lid used in the present invention is not particularly limited as long as it is a lid fitted into the container body within the opening of the container body, but normally, the lid body is fitted from the periphery of the opening. It has a flange part that is stretched outward. A bent piece may extend from the outer peripheral edge of the collar portion upward (the same applies in the direction toward the upper bottom surface of the lid), which is preferable.

The outer fitting lid used in the present invention is not particularly limited as long as it is a lid fitted to the container main body outside the opening of the container main body, but normally, the outer fitting lid is inserted from the periphery of the opening. It has a flange portion that is stretched toward one side and a hanging piece that extends downward from the outer peripheral edge of this flange portion, and further, this hanging piece has a depression that faces inwardly of the lid body. This depression may be provided intermittently or may be a continuous groove.
The collar portion and the depression may be provided over the entire circumference of the opening, or may be provided intermittently.

In the present invention, the inner fitting lid and the outer fitting lid are fitted inside and outside the opening of the container body to close the opening of the container body.
The fitting between the container body and the inner fitting lid is performed by folding the lid part below the protrusion on the peripheral wall of the container body, or when a bent piece is provided on the outer peripheral edge of this flange part. It is performed by facing the music piece and inserting it. The fitting of the container body and the outer fitting lid body is performed by fitting the hanging piece of the container body into the gap between the lower surface of the collar portion of the lid body and the upper edge of the depression. Since the container body and the inner fitting lid are fitted together in this way, it is preferable to provide a stepped portion on the peripheral wall of the container body by projecting the lower part of the protrusion toward the inside of the container body. The flange of the lid is supported by the lower surface of the upper surface of the step. Therefore, the size of the gap between the lower end edge of the protrusion of the container body and the upper surface of the step portion should be at least approximately equal to the thickness of the flange portion of the lid or the width of the bent piece.

[0012] Depending on the usage of the container body of the present invention, there is no particular limitation on what is packaged, and any may be used, but normally, for example, sandwiches, hot dogs, cakes, various sushi and side dishes. It is also suitable for packaging rice and rice.

[0013]

EXAMPLES The present invention will be described more specifically by way of examples, but the present invention is not limited to these examples. The drawings show an embodiment of a thin plastic fitting packaging container according to the present invention. That is, FIG. 1 shows a container body of a thin plastic fitting packaging container according to the present invention, and a and b are respectively,
It is a top view and a side view. 2 and 3 show a thin plastic fitting packaging container according to the present invention in which the opening of the container body is closed by the inner fitting lid and the outer fitting lid, respectively. FIG. 2 is a vertical cross section cut along a cross section (corresponding to the AA cross section in FIG. 1a) that passes through the diagonal line of the container.

The container body 1 shown in the drawing is obtained by vacuum pressure forming a thin sheet of polystyrene, and the shape of the lower bottom surface and the opening are both substantially rectangular with rounded corners. It is an inverted quadrangular pyramid with a bottom.
This container body 1 is provided on the upper part of the peripheral wall 11 thereof with a projection 12 arranged so as to project inwardly of the container body 1 and a periphery of the entire circumference of the opening of the container body 1 toward the outside of the container body 1. 13 and a hanging piece 14 extending downward from the collar 13
have. Thus, the collar portion 13 is substantially horizontal, and the hanging piece 14 is projected obliquely outward, and the lower end peripheral edge thereof is substantially parallel to the lower bottom surface of the container body 1. Has been extended to. The projections 12 are intermittently provided at the four corners of the opening of the container body 1, respectively. Further, the peripheral wall 11 of the container body 1 has a step 15 formed by projecting the lower part of the projection 12 provided on the upper part thereof inwardly of the container body 1.

The inner fitting lid 2 is fitted in the opening of the container body 1 to close the opening of the container body. The inner fitting lid 2 shown in the drawing is obtained by vacuum pressure forming a thin sheet of polystyrene, and the shape of the upper bottom surface and the opening is the same as that of the lower bottom surface and the opening of the container body. , Each of which is a quadrangular truncated pyramid with a substantially rectangular shape with a rounded apex. The inner fitting lid body 2 has a flange portion 21 stretched substantially horizontally from the peripheral edge of the entire circumference of the opening toward the outside of the lid body. A bending piece 22 extends upward from the outer peripheral edge of the collar portion 21. Bent piece 22 of this fitting lid 2
, By fitting into the gap between the lower end edge of the projection 12 of the container body 1 and the upper surface of the step portion 15, the inner fitting lid 2 is fitted with the container body 1 in the opening of the container body 1, The opening of the main body 1 is closed.

The outer fitting lid 3 is fitted outside the opening of the container body 1 to close the opening of the container body. The outer fitting lid 3 shown in the drawing is obtained by vacuum pressure molding a thin sheet of polystyrene, and the shape of the upper bottom surface and the opening is the same as the shape of the lower bottom surface and the opening of the container body. , Each of which is a quadrangular truncated pyramid with a substantially rectangular shape with a rounded apex. The outer fitting lid body 3 has a flange portion 31 extending from the peripheral edge of the entire circumference of the opening toward the outside of the lid body, and a hanging piece 32 extending downward from the outer peripheral edge of the flange portion 31. In addition, the hanging piece 32 is provided with a depression 33. Thus, the collar portion 31 is stretched horizontally. Also,
The depression 33 of the hanging piece 32 is a groove continuously provided over the entire circumference of the opening. By fitting the hanging piece 14 of the container body 1 into the gap between the lower surface of the flange 31 of the outer fitting lid 3 and the upper edge of the groove 33, the outer fitting lid 3 is opened in the container body 1. The container body 1 is fitted outside, and the opening of the container body 1 is closed.

[0017]

According to the method of the present invention, the container body of the thin-walled plastic fitting packaging container can be used for both the inner fitting packaging container and the outer fitting packaging container,
The utility value of this container body is enhanced.

[Brief description of drawings]

FIG. 1 shows a container body of a thin plastic fitting packaging container according to the present invention, in which a and b are a plan view and a side view, respectively.

FIG. 2 is a view showing the thin plastic fitting packaging container of the present invention in which the opening of the container body is closed by an inner fitting lid, and a cross-sectional surface (A- in FIG. 1a, which passes through a diagonal line of the fitting packaging container. It is a vertical cross section cut by (corresponding to A cut surface).

FIG. 3 shows a thin plastic fitting packaging container according to the present invention in which an opening of the container body is closed by an outer fitting lid, and a cross section (A- in FIG. 1a) passing through a diagonal line of the fitting packaging container. It is a vertical cross section cut along the line A).

[Explanation of symbols]

 1 Container body 11 Peripheral wall 12 Projection 13 Collar part 14 Hanging piece 15 Step part 2 Inner fitting lid 21 Collar part 22 Bending piece 3 Outer fitting lid 31 Collar part 32 Hanging piece 33 Groove groove (depression)

Claims (4)

[Claims] 1. When using a thin plastic mating packaging container, after storing an article to be packaged in the thin plastic mating packaging container body, the thin plastic mating packaging container body The use of the container body, characterized in that the opening of the container is closed by an inner fitting lid or an outer fitting lid made of thin plastic. 2. A container body of a fitting packaging container made of thin-walled plastic, a projection provided on an upper part of a peripheral wall of the container body so as to project inward of the container body, and an opening peripheral edge of the container body to the outside of the container body. 2. The method of using the container body according to claim 1, wherein the container body has a flange portion that is stretched toward the outside and a hanging piece that extends downward from the outer peripheral edge of the flange portion. 3. An inner fitting lid made of thin-walled plastic, which has a flange extending from the peripheral edge of the opening of the container body of the fitting packaging container made of thin-walled plastic toward the outside of the lid. A method of using the container body according to claim 1. 4. An opening of a container body of a fitting packaging container made of thin-walled plastic, a flange portion stretched from the opening peripheral edge toward the outside of the lid, and extended downward from the outer peripheral edge of the flange portion. The method of using the container body according to claim 1, wherein the folding piece is closed with an outer fitting lid made of a thin-walled plastic and having a depression inwardly facing the lid.