JP3794433B2 - Sealed container - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a sealed container comprising a container body that can be used as a packaging container for foodstuffs such as yogurt, jelly, and pudding, printing ink, paint, adhesive, and the like, a sealing material, and a lid.
[0002]
[Prior art]
Conventionally, sealed containers made of container bodies, sealing materials, and lids have been used as packaging containers for foodstuffs such as yogurt, jelly, and pudding, printing inks, paints, adhesives, etc. In a sealed container in which both the sealing material and the lid are formed of a synthetic resin, it has not been considered to stack the sealed containers themselves in multiple stages during storage and transportation.
[0003]
[Problems to be solved by the invention]
The inventor of the present invention has reached the present invention as a result of research on sealed containers that are not easily damaged when the sealed containers themselves are stacked in multiple stages.
[0004]
[Means for Solving the Problems]
The present invention relates to a sealed container comprising a container main body, a sealing material thermally bonded to an edge formed around the mouth of the container main body, and a lid attached to the container main body via the sealing material. The sealed containers themselves can be stacked in multiple stages, and the inner surface of the lid superimposed on the edge of the container body via the sealing material is slightly raised from the edge toward the center of the container body. The present invention relates to a sealed container.
[0005]
Then, the present invention provides a sealed container comprising a container body, a sealing material thermally bonded to an edge formed around the mouth of the container body, and a lid attached to the container body via the sealing material. in it, a projecting portion formed on the lower surface of the bottom portion of the container body, by the rising portion formed in the center of the lid, can be stacked sealed container itself in multiple stages, the lid via a sealing material container It has a wide and smooth ring-shaped portion superimposed on a wide and smooth edge of the main body, and the inner surface of the lid body from the inner periphery of the ring-shaped portion to the rising portion formed at the center of the lid body is separated by 10 mm The protrusion formed along the inner lower end of the hanging portion that rises with a constant gradient in the range of 0.5 to 2.0 mm and hangs along the outer periphery of the lid body from the outer periphery of the edge of the container body. The width of the container body by engaging with the lower end of the hanging part In about a sealed container, characterized in that the smooth annulus in wide lid to heat the bonded sealing material smooth edge is pressed against.
[0006]
【Example】
The present invention will be described below with reference to the drawings.
1 is a partial sectional view showing an example of a sealed container according to the present invention, the right half of FIG. 1 is a partial front view showing an example of a sealed container according to the present invention, and the left half of FIG. 2 is a sealed container shown in FIG. 2 is a partial cross-sectional view showing a state in which the container is stacked in multiple stages, the right half of FIG. 2 is a partial front view showing a state in which the sealed containers shown in FIG. 1 are stacked in multiple stages, and the left half of FIG. 3 is a partial cross-sectional view showing a state in which the container main body shown in FIG. 1 is stacked. FIG. 4 is a partial cross-sectional view showing the state in which the lid shown in FIG. 1 is stacked. 4 is a partial front view showing a stacked state in which the lid shown in FIG. 1 is stacked, and FIG. 5 is a partially enlarged sectional view of the lid shown in FIG.
[0007]
The container body 1 can be formed of a synthetic resin such as polyethylene, polypropylene, polyamide, polyethylene terephthalate, or a composite material thereof.
[0008]
The container body 1 is formed around a circular bottom portion 2, a substantially cylindrical side wall portion 3 standing from the periphery of the circular bottom portion 2 and expanding upward, and around the mouth portion of the container body 1. And a wide and smooth edge 4 and a hanging part 5 hanging downward from the outer periphery of the edge 4. In the container body 1, a plurality of ribs 6 are formed between the upper end of the side wall portion 3, the edge portion 4, and the hanging portion 5, and an extension rib 7 extending further downward than the rib 6 is formed. Has been. A circular protrusion 8 is formed on the bottom surface of the bottom 2 of the container body 1.
[0009]
The lid 9 can be formed of a synthetic resin such as polyethylene, polypropylene, polyamide, polyethylene terephthalate, or a composite material thereof.
[0010]
The lid 9 includes a wide and smooth ring-shaped portion 11 that is superimposed on the wide and smooth edge 4 of the container body 1 via the seal material 10, and slightly from the inner periphery of the ring-shaped portion 11 toward the center. It has an ascending inclined part 12 and a rising part 13 rising from the inner periphery of the inclined part 12. The lid 9 is formed with a cylindrical hanging portion 14 that hangs downward from the outer periphery of the ring-shaped portion 11, and an inclined portion 15 that is inclined downward and outward is formed at the lower end of the hanging portion 14. A cylindrical hanging portion 16 is formed at the lower end of the portion 15 so as to hang downward. The rising portion 13 has a shape smaller than the protruding portion 8 of the container body 1 and is formed so as to be accommodated in the protruding portion 8 when the sealed containers of the present invention are stacked. A plurality of protrusions 17 are formed on the drooping portion 14 of the lid 12 along the inner lower end thereof.
[0011]
The sealing material 10 can be thermally bonded to the edge 4 of the container body 1 by heating and pressurizing, and can be easily peeled off from the edge 4 of the container body 1 after being thermally bonded. A resin film can be used. As a commercial item of the sealing material 10, Dainippon Ink & Chemicals, Inc. Diffen E7700T, Diffen PP-100, Diffen 254N etc. can be mentioned, for example. In order to thermally bond the sealing material 10 to the edge 4 of the container body 1, the heat sealing bar is used, and the temperature is 120 to 200 ° C., the pressure is 1 to 5 kg / cm ² , and the time is 1 to 5 seconds. Good.
[0012]
When the sealed container according to the present invention is used, the container main body 1 is filled with contents such as foodstuffs such as yogurt, jelly, and pudding, printing ink, paint, adhesive, and the like. After the air inside is replaced with nitrogen gas, the sealing material 10 is placed on the edge 4 of the container body 1, and the sealing material 10 is heated and pressurized on the edge 4 of the container body 1 using a heat seal bar. Thus, the sealing material 10 is thermally bonded to the edge 4 of the container body 1. Next, the container body 1 to which the sealing material 10 is thermally bonded is covered with the lid body 9, and the protrusion 17 formed along the inner lower end of the hanging portion 14 of the lid body 9 is formed on the lower end of the hanging portion 5 of the container body 1. The lid body 9 is attached to the container main body 1 by engaging. In the sealed container according to the present invention, the protrusion 17 formed along the inner lower end of the hanging part 14 of the lid body 9 is engaged with the lower end of the hanging part 5 of the container main body 1, thereby increasing the width of the container body 1. The wide and smooth ring-shaped portion 11 of the lid 9 is pressed against the sealing material 10 thermally bonded to the smooth edge portion 4, and the contents can be tightly sealed.
[0013]
In order to take out the contents from the sealed container according to the present invention, the lid 9 is removed from the container main body 1, the sealing material 10 is peeled off from the edge 4 of the container main body 1, and then the contents can be taken out from the container main body 1. That's fine.
[0014]
When the sealed containers according to the present invention are stacked in multiple stages, the sealed containers are placed horizontally by stacking in multiple stages while fitting the rising portions 13 of the sealed containers positioned in the lower stage into the protruding portions 8 of the sealed containers positioned in the upper stage. It is possible to prevent the cargo from collapsing due to slippage.
[0015]
In the sealed container shown in FIG. 1 to FIG. 5, the lid member 9 is formed with the inclined portion 12 slightly rising from the inner periphery of the ring-shaped portion 11 toward the center direction, so that the sealing material is formed. The inner surface of the lid body 9 superimposed on the edge 4 of the container body 1 through 10 is slightly raised from the edge 4 toward the center of the container body 1. When the sealed containers according to the present invention are stacked in multiple stages, the inner surface of the lid 9 is bent from the edge 4 to the container body 1 even if the lid 9 of the sealed container is bent downward due to a load from the upper sealed container. By slightly rising toward the center direction, it is possible to prevent the lid 9 from coming into contact with the sealing material 10 and damaging the sealing material 10. In order to achieve this object, the sealed container according to the present invention is reduced to 0.1 mm when the inner surface of the lid from the inner periphery of the ring-shaped portion 11 to the rising portion 13 formed at the center of the lid 9 is separated by 10 mm. It rises with a constant gradient in the range of 5 to 2.0 mm.
[0016]
In the sealed container according to the present invention, only the container body 1 is nested as shown in FIG. In addition, when the container body 1 is nested and stacked, a gap is formed between the upper container body 1 and the lower container body 1 by the extension rib 7, so that the upper container body 1 is It can be easily removed from the container.
[0017]
Further, in the sealed container according to the present invention, the lid 9 has a cylindrical hanging portion 14, an inclined portion 15 inclined downward from the lower end of the hanging portion 14, and a hanging portion 15 hanging from the lower end of the inclined portion 15. The drooping portion 16 is formed, and a plurality of protrusions 17 are formed along the lower end inside the drooping portion 14, so that the upper lid body 9 is formed on the shoulder portion of the lower lid body 9 shown in FIG. 4. Can be stacked in multiple stages, and the uppermost lid 9 can be easily taken out.
[0018]
【The invention's effect】
When the sealed containers according to the present invention are stacked in multiple stages, the inner surface of the lid 9 is bent from the edge 4 to the container body 1 even if the lid 9 of the sealed container is bent downward due to a load from the upper sealed container. By slightly rising toward the center direction, it is possible to prevent the lid 9 from coming into contact with the sealing material 10 and damaging the sealing material 10.
[Brief description of the drawings]
1 is a partial sectional view showing an example of a sealed container according to the present invention, and the right half of FIG. 1 is a partial front view showing an example of a sealed container according to the present invention.
2 is a partial cross-sectional view showing a state in which the sealed containers shown in FIG. 1 are stacked in multiple stages, and FIG. 2 right half is a partial front view showing a state in which the sealed containers shown in FIG. 1 are stacked in multiple stages. FIG.
3 is a partial cross-sectional view showing a state in which the container main bodies shown in FIG. 1 are stacked, and the right half in FIG. 3 is a partial front view showing a state in which the container main bodies shown in FIG. 1 are stacked.
4 is a partial sectional view showing a state in which the lids shown in FIG. 1 are stacked, and a right half in FIG. 4 is a partial front view showing a state in which the lids shown in FIG. 1 are stacked. .
FIG. 5 is a partial enlarged cross-sectional view of the lid shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container main body 4 Edge part 5 Hanging part 8 of a container main body Projection part 9 Lid 10 Seal material 13 Standing part 14 Drooping part 17 of lid

Claims (4)

In a sealed container comprising a container body, a sealing material thermally bonded to an edge formed around the mouth of the container body, and a lid attached to the container body through the sealing material,
With the protruding part formed on the bottom surface of the bottom of the container body and the rising part formed in the center of the lid, the sealed containers themselves can be stacked in multiple stages,
The lid has a wide and smooth ring-shaped portion that is superimposed on a wide and smooth edge of the container body via a sealing material,
The inner surface of the lid from the inner periphery of the ring-shaped part to the rising part formed at the center of the lid rises with a constant gradient in the range of 0.5 to 2.0 mm when separated by 10 mm,
In addition, by engaging the protrusion formed along the inner lower end of the drooping portion that hangs down along the outer periphery of the lid body with the lower end of the drooping portion that hangs down from the outer periphery of the edge of the container main body, A sealed container characterized in that a wide and smooth ring-shaped portion of a lid is pressed against a sealing material thermally bonded to a smooth edge portion . The sealed container according to claim 1, wherein the container body is formed of a synthetic resin. The sealed container according to claim 1 or 2, wherein the lid is formed of a synthetic resin. The sealed container according to any one of claims 1 to 3, wherein the sealing material is a thermoadhesive synthetic resin film.

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