JPH08268434A - Sealed container - Google Patents

Abstract

PURPOSE: To prevent a sealing material from being damaged due to a contact of a lid body with the sealing material when containers are stacked in multiple stages by slightly raising the inner surface of the lid body from the edge part toward the center of a container main body. CONSTITUTION: A sealed container consists of a container main body 1, sealing material 10 which is heat-sealed on an edge part being formed on the periphery of an opening of the container main body 1, and a lid body 9 which is attached to the container main body 1 with the sealing material 10. For such a sealed container, a tilted part 12 which is slightly raised from the inner periphery of an annular part 11 of the lid body 9 which is placed on a flat edge part of the container main body 1, to the center of the container main body 1 is provided. By this method, when the containers are stacked in multiple stages, even if the lid body 9 of the sealed container warps downward by receiving a load from the sealed container on the upper stage, since the inner surface of the lid body 9 is slightly raised from the edge part 11 to the center of the container main body, the sealing material 10 can be prevented from being damaged by coming into contact with the lid body 9.

Description

Detailed Description of the Invention

[0001]

The present invention relates to yogurt, jelly,
The present invention relates to a sealed container including a container body that can be used as a container for packaging foodstuffs such as pudding, printing ink, paints, adhesives, etc., a sealing material, and a lid.

[0002]

2. Description of the Related Art Conventionally, as a container for packaging foodstuffs such as yogurt, jelly, pudding, printing ink, paint, adhesive, etc., a sealed container composed of a container body, a sealing material and a lid has been used. However, in a sealed container in which the container body, the sealing material, and the lid are all made of synthetic resin, stacking the sealed containers themselves in multiple stages during storage and transportation has not been considered.

[0003]

The present inventor has arrived at the present invention as a result of research on a hermetically sealed container which is not easily damaged when the hermetically sealed containers themselves are stacked in multiple stages.

[0004]

SUMMARY OF THE INVENTION The present invention comprises a container body,
In a hermetically sealed container including a sealing material that is heat-bonded to an edge portion formed around the mouth of the container body and a lid body that is attached to the container body via the sealing material, the hermetically sealed containers themselves are stacked in multiple stages. The present invention relates to a hermetically sealed container characterized in that an inner surface of a lid body that is superposed on an edge portion of the container body via a sealing material is slightly raised from the edge portion toward the center of the container body.

Further, according to the present invention, there is provided a container body, and a sealing material which is heat-bonded to an edge portion formed around a mouth portion of the container body.
In a hermetically sealed container including a lid body attached to a container body via a sealing material, a protrusion is formed on the bottom surface of the bottom of the container body, and a rising portion formed in the center of the lid body is used for sealing. The containers themselves can be stacked in multiple stages,
In addition, the inner surface of the lid body, which is overlapped with the edge of the container body via the sealing material, is 1 from the edge toward the center of the container body.
A droop that rises from 0.5 mm to 2.0 mm at a distance of 0 mm and that projects from the outer circumference of the edge of the container body along the inner lower end of the hanging part that droops along the outer circumference of the lid body. The present invention relates to a hermetically sealed container characterized in that a wide and smooth ring-shaped portion of a lid is pressed against a sealing material that is heat-bonded to a wide and smooth edge portion of a container body by engaging with a lower end of the portion.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG.
The left half is a partial cross-sectional view showing an example of the sealed container according to the present invention, the right half of FIG. 1 is a partial front view showing an example of the sealed container according to the present invention, and the left half of FIG. 2 is a multistage structure of the sealed container shown in FIG. 2 is a partial cross-sectional view showing the state of stacking in
3 is a partial front view showing a state in which the sealed containers are stacked in multiple stages, FIG. 3 left half is a partial cross-sectional view showing a state in which the container bodies shown in FIG. 1 are stacked, and FIG. 3 right half is a container shown in FIG. Partial front view showing a state where the main bodies are stacked, FIG. 4 left half is a partial sectional view showing a state where the lid body shown in FIG. 1 is stacked,
The right half of FIG. 4 is a partial front view showing a state in which the lid bodies shown in FIG. 1 are stacked, and FIG. 5 is a partially enlarged cross-sectional view of the lid bodies shown in FIG.

The container body 1 can be molded of synthetic resin such as polyethylene, polypropylene, polyamide, polyethylene terephthalate or a composite material thereof.

The container body 1 has a circular bottom portion 2, a side wall portion 3 which is provided upright from the periphery of the circular bottom portion 2 and which is widened upward, and a peripheral portion of the container body 1. It has a wide and smooth edge portion 4 formed in the above, and a hanging portion 5 hanging downward from the outer periphery of the edge portion 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 extension ribs 7 extending further downward than the ribs 6 are formed. Has been done. A circular protrusion 8 is formed on the bottom surface of the bottom 2 of the container body 1.

The lid 9 can be formed of synthetic resin such as polyethylene, polypropylene, polyamide, polyethylene terephthalate or a composite material thereof.

The lid 9 has a wide and smooth ring-shaped portion 11 which is superposed on the wide and smooth edge 4 of the container body 1 via a sealing material 10, and extends from the inner circumference of the ring-shaped portion 11 toward the center. And a rising portion 13 that rises from the inner circumference of the inclined portion 12. The lid 9 is formed with a cylindrical hanging portion 14 that hangs downward from the outer circumference of the ring-shaped portion 11, and a lower end of the hanging portion 14 is formed with an inclined portion 15 that is inclined downward outward. 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 housed in the protruding portion 8 when the sealed containers of the present invention are stacked. The hanging portion 14 of the lid 12 has a plurality of protrusions 1 along the lower end inside thereof.
7 are formed.

The sealing material 10 can be heat-bonded to the edge 4 of the container body 1 by heating and pressurizing and can be easily peeled from the edge 4 of the container body 1 after heat-bonding. An adhesive synthetic resin film can be used. As a commercially available product of the sealing material 10,
For example, Diffren E770 manufactured by Dainippon Ink and Chemicals, Inc.
0T, differential PP-100, differential 254
N etc. can be mentioned. To heat-bond the sealing material 10 to the edge portion 4 of the container body 1, a heat-sealing bar is used and the temperature is 120 to 200 ° C. and the pressure is 1 to 5 kg / cm ² ,
The heat bonding may be performed for 1 to 5 seconds.

When the sealed container according to the present invention is used, the container body 1 is filled with contents such as foods such as yogurt, jelly and pudding, printing ink, paint, adhesive and the like, and if necessary. After replacing the air in the container body 1 with nitrogen gas, the sealing material 10 is placed on the edge 4 of the container body 1,
The sealing material 10 is heat-bonded to the edge portion 4 of the container body 1 by applying heat and pressure to the edge portion 4 of the container body 1 using a heat seal bar. Next, the lid body 9 is covered on the container body 1 to which the sealing material 10 is heat-bonded, and the protrusions 17 formed along the inner lower end of the hanging portion 14 of the lid body 9.
The lid 9 is attached to the container body 1 by engaging with the lower end of the hanging part 5 of the container body 1. The hermetically sealed container according to the present invention can be configured to have a wide width of the container body 1 by engaging the protrusion 17 formed along the inner lower end of the hanging part 14 of the lid body 9 with the lower end of the hanging part 5 of the container body 1. The wide and smooth ring-shaped portion 11 of the lid body 9 is pressed against the sealing material 10 that is heat-bonded to the smooth edge portion 4, so that the contents can be tightly sealed.

To take out the contents from the hermetically sealed container according to the present invention, the lid 9 is removed from the container body 1, the sealing material 10 is peeled off from the edge 4 of the container body 1, and then the contents are removed from the inside of the container body 1. Just take things out.

When the sealed containers according to the present invention are stacked in multiple stages, the rising portion 1 of the sealed container located in the lower stage
It is possible to prevent the sealed container from laterally shifting and causing a load collapse by fitting the three into the protruding portion 8 of the sealed container located in the upper stage and stacking them in multiple stages.

In the sealed container shown in FIGS. 1 to 5, the lid 9 is formed with the inclined portion 12 slightly rising from the inner periphery of the ring-shaped portion 11 toward the center. The inner surface of the lid 9 superposed on the edge 4 of the container body 1 via the sealing material 10 slightly rises from the edge 4 toward the center of the container body 1. In the hermetically sealed container according to the present invention, even when the lid 9 of the hermetically sealed container bends downward due to a load from the hermetically sealed container in the upper stage when stacked in multiple stages, the inner surface of the lid 9 is cut from the edge 4 to the container body 1 Since the lid 9 is slightly raised toward the center, it is possible to prevent the lid 9 from coming into contact with the sealing material 10 and damaging the sealing material 10. To achieve this object, the hermetically sealed container according to the present invention has, for example, 0.5 to 2. when the inner surface of the lid 9 is separated from the edge 4 by 10 mm toward the center of the container body 1.
It is preferable to raise it by 0 mm.

In the hermetically sealed container according to the present invention, since the side wall portion 3 of the container body 1 has a substantially cylindrical shape that widens upward, as shown in FIG.
Only the containers can be nested, and when the container bodies 1 are nested, the extension ribs 7 allow the upper container body 1 to be stacked.
Since the space is formed between the lower container body 1 and the lower container body 1, the upper container body 1 can be easily removed from the lower container.

In the hermetically 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 lower end of the inclined portion 15. Since the hanging portion 16 hanging from the lower portion is formed and a plurality of protrusions 17 are formed along the inner lower end of the hanging portion 14, the shoulder portion of the lower lid 9 shown in FIG. The protrusions 17 of the lid 9 can be placed and stacked in multiple stages, and the uppermost lid 9 can be easily taken out.

[0018]

In the hermetically sealed container according to the present invention, when stacked in multiple stages, even if the lid 9 of the hermetically sealed container is bent downward due to the load from the upper hermetically sealed container, the inner surface of the lid 9 is edged. 4, the lid 9 comes into contact with the sealing material 10 and the sealing material 1 rises slightly toward the center of the container body 1.
It is possible to prevent 0 from being damaged.

[Brief description of drawings]

1 is a partial cross-sectional view showing an example of a hermetically sealed container according to the present invention, and a right half of FIG. 1 is a partial front view showing an example of an hermetically sealed container according to the present invention.

2 is a partial cross-sectional view showing a state where the sealed containers shown in FIG. 1 are stacked in multiple stages, and a right half of FIG. 2 is a partial front view showing a state where the sealed containers shown in FIG. 1 are stacked in multiple stages. It is a figure.

3 is a partial cross-sectional view showing a state where the container bodies shown in FIG. 1 are stacked, and a right half of FIG. 3 is a partial front view showing a state where the container bodies shown in FIG. 1 are stacked.

4 is a partial sectional view showing a state where the lids shown in FIG. 1 are stacked, and a right half of FIG. 4 is a partial front view showing a state where the lids shown in FIG. 1 are stacked. .

5 is a partially enlarged cross-sectional view of the lid body shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 4 Edge part 5 Hanging part of container body 8 Projection part 9 Lid body 10 Seal material 13 Rising part 14 Drooping part of lid body 17 Projection shape

Claims (8)

[Claims] 1. A hermetically sealed container comprising a container main body, a seal member thermally adhered to an edge portion formed around the mouth of the container main body, and a lid attached to the container main body via the seal member. And the sealed containers themselves can be stacked in multiple stages,
A hermetically sealed container, wherein an inner surface of a lid body, which is superposed on an edge portion of the container body via a sealing material, is slightly raised from the edge portion toward a center direction of the container body. 2. A protrusion formed on the lower surface of the bottom of the container body, and a rising portion formed at the center of the lid body,
The sealed container according to claim 1, wherein the sealed container itself can be stably stacked in multiple stages. 3. The inner surface of the lid body is 0.5 to 2.0 mm when it is 10 mm away from the edge toward the center of the container body.
The sealed container according to claim 1, which rises. 4. A container by engaging a protrusion formed along the inner lower end of a hanging part that hangs along the outer periphery of the lid with the lower end of the hanging part that hangs from the outer periphery of the edge of the container body. The wide and smooth ring-shaped portion of the lid body is pressed against the sealing material that is heat-bonded to the wide and smooth edge of the main body.
The sealed container described. 5. A hermetically sealed container comprising a container main body, a seal member thermally adhered to an edge portion formed around the mouth of the container main body, and a lid attached to the container main body via the seal member. And a protrusion formed on the lower surface of the bottom of the container body,
With the rising portion formed in the center of the lid body, the sealed containers themselves can be stacked in multiple stages, and the inner surface of the lid body superposed on the edge portion of the container body via the sealing material is A protrusion formed on the edge of the container body rises by 0.5 to 2.0 mm at a distance of 10 mm toward the center and is formed along the inner lower end of the hanging part that hangs along the outer periphery of the lid. By engaging the lower end of the hanging part that hangs from the outer periphery, the wide and smooth ring-shaped part of the lid is pressed against the sealing material that is heat-bonded to the wide and smooth edge of the container body. Sealed container to do. 6. The hermetically sealed container according to claim 1, wherein the container body is molded of synthetic resin. 7. The sealed container according to claim 1 or 5, wherein the lid is made of synthetic resin. 8. The sealed container according to claim 1, wherein the sealing material is a heat-adhesive synthetic resin film.