JPH10236532A - Plastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the unsealing operation, and to prevent the content from being scattered during the unsealing as much as possible in a plastic container into which the foods such as raw cream and gum syrup are filled. SOLUTION: An upper lid 2 is joined with an upper edge of a container body 1 with the heat seal, etc., and an upper opening part 6 of the container body 1 is sealed by the upper lid 2. A projected piece 12 for separation is provided on the upper lid 2, and a projection 13 is provided on the face side of the projected piece 12. When the content in the container body 1 is taken out, the projected piece 12 of the upper lid 2 is folded inward, and a hole is made in the upper lid 2 above the upper opening part 6 of the container body 1 by the projection 13. Then, the projected piece 12 is picked, and the upper lid 2 is separated from the container body 1 to widely open the upper opening part 6. Because the outside air flows inside the container body 1 through the hole made by the projection 13, the internal pressure is approximately equal to the external pressure, the upper lid 2 is easily separated, and little content is scattered during the unsealing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic container mainly for packing fresh cream, gum syrup, jelly and other foods, and more particularly to a plastic container which is easy to open and can prevent the contents from being scattered at the time of opening. About.

[0002]

2. Description of the Related Art Sealed plastic containers are generally widely used as containers for packing foods such as fresh cream and gum syrup for coffee, or jelly, pudding, and tofu. This kind of plastic container is made of a thermoplastic resin such as polypropylene, filled with foodstuffs, and then the upper opening of the container body is made into a thin sheet-shaped aluminum or synthetic resin top lid. Sealed. In particular, in the conventional plastic container, a protruding piece is provided on the upper end edge of the container main body or a part of the upper cover to make the upper cover easily peelable. According to this kind of plastic container, the upper lid can be peeled off from the container body by picking the protruding piece and pulling the upper lid inward at the time of opening.

[0003]

However, according to the conventional plastic container, since the inside is evacuated and packaged so that the contents can be preserved, the peeling of the top lid requires more force than expected. There are times when opening cannot be done as expected. In addition, since the outside air suddenly flows into the container at the time of opening, the liquid or the content containing the liquid is scattered to the outside by the reaction, and this may adhere to hands or clothes.

Accordingly, an object of the present invention is to provide a plastic container which can be easily opened and does not scatter contents when opened.

[0005]

According to the present invention, in order to achieve the above object, according to the first aspect of the present invention, the upper opening of the container body is sealed with an upper cover, and a part of the upper cover is provided with a projecting piece for peeling. In the plastic container provided with, a projection is provided on the surface side of the projection of the upper lid, and the projection is bent so that the upper lid can be perforated by the projection on the upper opening of the container body. The purpose of the present invention is to provide a plastic container.

In the invention according to claim 2, an air hole is provided in the upper lid on the upper opening of the container body, and a seal piece is attached to the surface of the upper lid at the air hole portion. The purpose of the present invention is to provide a plastic container.

Further, according to the third aspect of the present invention, there is provided a plastic container characterized in that a tape member extending from the projecting piece to the inside of the container body is attached to the back surface of the upper lid.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a preferred example of a plastic container according to the present invention, FIG. 2 is a sectional view of the plastic container, and FIG. 3 is a sectional view showing a part of the plastic container in an enlarged manner.

This plastic container A is composed of a container body 1 and an upper lid 2, and the inside thereof is filled with contents 3, for example, fresh cream, gum syrup, jelly and other foods.

The container body 1 is formed by integrally molding an outer peripheral portion 4 and a bottom portion 5 with a thermoplastic resin such as polypropylene or polystyrene, and the upper side thereof is entirely opened as an upper surface opening 6. The outer peripheral portion 4 has a tapered shape gradually tapering downward, and an upper end edge thereof is projected outward as a flange portion 7. A part of the flange portion 7 is further projected outward to form a knob 8, and a V-shaped cut-out portion 9 is formed on the back side of a portion where the knob 8 and the flange portion 7 continue. The bottom 5 has a raised portion 10 with its central portion raised inside, and the periphery of the raised portion 10 projects as a ring-shaped leg 11.

On the other hand, the upper lid 2 is formed of a thin sheet of synthetic resin such as vinyl chloride or aluminum or the like, and the outer peripheral edge thereof is joined to the upper surface of the flange 7 of the container body 1. In addition,
As the joining method, the most common method is to place the upper lid 2 on the upper opening 6 of the container body 1 and heat-seal it. However, it is also possible to use a quick-drying adhesive to adhere. Here, a projecting piece overlapping the knob 8 of the container body 1 is formed on the upper lid 2, and a projection 13 is provided on the surface side thereof.

The projection 13 is, for example, a cone or semicircle having a diameter of about 1 mm, and is provided on the tip side of the protruding piece 12. Particularly, as shown in FIG.
The distance from the fold 9 to the upper surface opening 6 is defined as L, and the distance from the fold 9 to the outside is greater than the distance L (L + α). Therefore, when the protruding piece 12 is bent inward at the position of the folding portion 9, the projection 13 is located on the upper surface opening 6, and the projection 13 can open a hole h in the upper lid 2 as shown in FIG. The projection 13 may be formed integrally with the knob 8 or the upper lid 2 of the container body 1 by embossing or the like, or may be formed by dropping a synthetic resin melted at a predetermined position on the projection 12. it can.

Here, the use state of the plastic container A configured as described above will be described. This plastic container A
In order to take out the contents 3 at the location shown in FIG.
First, the knob 8 of the container body 1 is bent inward at the position of the folding part 9. Then, the protruding piece 12 of the upper lid 2 also bends inward at the position of the folding portion 9, and the projection 13 is placed on the upper opening 6 by the upper lid 2.
To face the surface of the So pick 8 as it is
Is pressed with the fingertip to push the projection 13 into the upper lid 2, thereby opening a hole h in the upper lid 2 on the upper opening 6 of the container body 1. When the hole h is opened, the knob 8 is returned, and the knob 8 is pulled inward together with the protruding piece 12.

Then, the upper lid 2 is moved by the acting force to the container body 1.
, And the upper surface opening 6 is opened. At this time, since the internal pressure and the external pressure are made substantially equal through the hole h, the upper lid 2 can be peeled off with a slight force, and the contents 3 hardly scatter at the time of opening. When the upper lid 2 is peeled off, the projections 13 function as slip stoppers, so that the opening operation can be performed smoothly.

Next, another embodiment of the plastic container according to the present invention will be described. Plastic container B shown in FIG.
Is an example in which an air hole 14 in place of the hole h is provided in the upper lid 2 in advance, and the air hole 14 has a diameter of, for example, about 1 mm and is opened in the upper lid 2 on the upper surface opening 6 of the container body 1.
A sealing piece 15 is attached to the surface of the upper lid 2 at the air hole 14 so that the air hole 14 can be sealed with the sealing piece 15.

The sealing piece 15 is, for example, a plastic film such as cellophane coated with an adhesive on one side, and is adhered with its adhesive side facing the upper lid 2. In addition, one end thereof is lifted from the upper lid 2 as a non-adhesive portion 15a, and the non-adhesive portion 15a is pinched so that the sealing piece 15 can be easily peeled off.

Here, in order to take out the contents from the plastic container B, first, the sealing piece 15 is peeled off from the upper lid 2 to open the air hole 14. Next, the container body 1
The knob 8 is bent inward at the position of the folding portion 9 and cut off from the container body 1, and then the knob 8 is pulled up together with the protruding piece 12 toward the inside. Then, the upper lid 2 is gradually peeled off from the container body 1 by the action force, and the upper opening 6 is opened. At this time, since the internal pressure and the external pressure are made substantially equal through the air holes 14, the upper lid 2 can be peeled off with a slight force, and there is almost no scattering of contents at the time of opening.

The plastic container C shown in FIGS. 6 and 7 is an example in which a tape member 16 is adhered to the back surface of the upper lid 2. The tape member 16 is introduced into the container main body 1 from the protruding piece 12 of the upper lid 2, and is separated from the container main body 1 together with the upper lid 2.

Here, as the tape member 16, it is conceivable to use a non-melting thread-like fiber such as a synthetic resin film or cotton thread formed into a thin strip. Among them, a resin film having a melting point higher than that of the container body 1 is used.
To prevent the back surface of the tape member 16 from being fused to the container body 1, or to join the container body 1 and the upper lid 2 using an adhesive, so that the back surface of the tape member 16 is not adhered to the container body 1. .

On the other hand, in the case of the non-melting thread-like fiber, this is previously adhered to the back surface of the upper lid 2 with an adhesive or the like, and then the upper lid 2 made of aluminum or synthetic resin is formed into a sheet shape. And heat-sealed on the upper surface opening 6, or attached using an adhesive. That is,
In any method, the back surface of the tape member 16 is not adhered to the container body 1, but is kept pressed against the flange 7 of the container body 1 by the bonding pressure between the container body 1 and the upper lid 2.

Here, in order to take out the contents 3 in the plastic container C, the knob 8 of the container body 1 is bent inward at the position of the folding portion 9 and cut off from the container body 1.
Thereafter, the knob 8 is pulled up together with the protruding piece 12 toward the inside. Then, the upper lid 2 is gradually peeled off from the container body 1 by the acting force, and first, the inside of the container body 1 is opened to the outside below the tape member 16. Then, the outside air flows into the inside of the container body 1 from that portion, so that the upper lid 2 can be easily peeled off from the container body 1.

As described above, the plastic container according to the present invention has been described. However, there is no portion corresponding to the knob 8 in the container body 1, and only the projecting piece 12 of the upper lid 2 protrudes from the outer peripheral edge of the flange 7 of the container body 1. There are also embodiments. In addition, the plastic container of the present application can be filled with various items other than the above-mentioned foods as contents.

[0023]

As is apparent from the above description, according to the present invention, a projection is provided on the surface side of the projecting piece of the upper lid, and the projection can be previously drilled on the upper opening of the container body. The opening operation can be easily performed with a small force, and the internal pressure of the container body becomes almost equal to the external pressure before the upper lid is peeled off, so that even if the contents are liquid, they do not scatter outside.

Further, the same effect can be obtained because an air hole sealed with a sealing piece is provided in the upper lid so that the air hole can be opened before the upper lid is peeled off.

Further, since a tape member extending from the protruding piece to the inside of the container body is attached to the back surface of the upper lid, it is possible to previously ventilate the container body at the tape member.
Therefore, the effect as described above can be obtained also in this embodiment.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred example of a plastic container according to the present invention.

FIG. 2 is a cross-sectional view of the plastic.

FIG. 3 is an enlarged partial cross-sectional view of a part of FIG.

FIG. 4 is a side view showing a usage state of the plastic container.

FIG. 5 is a perspective view showing another embodiment of the plastic container according to the present invention.

FIG. 6 is a perspective view showing another embodiment of the plastic container according to the present invention.

FIG. 7 is a sectional view of the plastic container shown in FIG. 6;

[Explanation of symbols]

 A, B, C Plastic container 1 Container body 2 Top lid 3 Contents 6 Top opening 8 Knob 9 Folding part 12 Projection piece 13 Projection 14 Air hole 15 Seal piece 16 Tape member

Claims (3)

[Claims] 1. An upper opening of a container body is sealed with an upper lid,
In a plastic container provided with a peeling projection on a part of the upper lid, a projection is provided on the surface side of the projection of the upper lid, and the projection is bent to cover the upper lid with the projection on the upper opening of the container body. A plastic container characterized in that perforations can be made in the container. 2. An upper opening of the container body is sealed with an upper lid,
In a plastic container provided with a peeling piece on a part of the upper lid, an air hole is provided in the upper lid on the upper opening of the container body, and a sealing piece is attached to the surface of the upper lid at the air hole. A plastic container characterized by being worn. 3. An upper opening of the container body is sealed with an upper lid,
A plastic container provided with a peeling protruding piece on a part of the upper lid, wherein a tape member extending from the protruding piece to the inside of the container body is attached to a back surface of the upper lid.