JPH0634308Y2 - Food container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a food container, and more particularly to a container suitable for fresh food that requires freshness retention.

(Prior Art) FIG. 6 exemplifies a typical container, the structure of which is a dish-shaped one plate made of a synthetic resin, and the distribution stage due to its light weight, particularly It has the advantage of facilitating mass transportation between manufacturers, intermediaries and retailers.

(Problems to be solved by the invention) By the way, for fresh foods such as seafood, sashimi, and meats, which require freshness, conventional containers are merely containers, and therefore, what is needed to maintain the freshness of foods? Useless.

In particular, it works to keep freshness in refrigeration facilities at home and in refrigerators at home, and until consumers take it from a retail store to their homes and put it in the refrigerator, and in addition, place it in a container and eat it side by side. There is a problem that can not be expected at all.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a useful container that is lightweight before use and is ready for keeping food cold by simply inserting water, for example, from a dedicated mouth. To aim.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a void portion in at least the bottom wall portion of the constituent wall of the container body, and the void portion is provided with a water absorbent resin and a fibrous substance. The present invention is characterized in that the composite is internally provided, and an injection port for an aqueous liquid and an air vent hole are provided at a higher position of the outer wall surface portion in the void portion.

(Operation) When an aqueous liquid is injected from the inlet into the void, one water-absorbent resin of the complex that is in contact with the aqueous liquid absorbs the liquid and swells to form a hydrogel, which then enters the void. Form a non-flowable aqueous layer.

At that time, the other fibrous substance of the composite is effective as an extender, and at the same time, retains the water-absorbing resin to evenly distribute it in the voids and acts as a passage for the aqueous liquid to be formed in the wall. Adjust the aqueous layer to the same thickness everywhere.

Then, the air vents guide the air in the voids to the outside during the injection of the aqueous liquid and the gelation of the water absorbent resin, so that the injection of the aqueous liquid and the gelation of the water absorbent resin are smoothly performed.

As a result, it is lightweight before the injection of the aqueous liquid, and after the injection, the non-fluidic aqueous layer having the same thickness is formed in each of the voids, so that the cold insulating ability is exerted.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

In the figure, A is a container, and this container A is provided by communicating a void portion 3 inside the bottom wall portion 2a and the lower half portion of the side wall portion 2b of the constituent wall 2 of the container body 1. Water absorbent resin 4,
At least water-absorbent resin 4 among fibrous substance 5, powder 6, etc.
And a composite of fibrous substance 5 is inherent. The fibrous substance 5 in the composite of the water-absorbent resin 4 and the fibrous substance 5 holds the water-absorbent resin and is evenly distributed in the voids.

Further, the container body 1 is provided with an inlet port 7 for the aqueous liquid in one of the higher positions of the outer wall surface portion 2A in the void portion 3 and an air vent hole 8 in the other, so that the water-absorbent resin 4 passes from the inlet port 7 to the void portion 3A.
When the hydrogel is formed in contact with the aqueous liquid injected therein, the non-fluidic aqueous layer 9 of the hydrogel occupies the inside of the void portion 3.

Then, in the container body 1, the filling port 7 is closed with a lid piece 10 made of an adhesive tape or the like so that the water-absorbent resin 4 does not come out from the opening 7. At the time of filling, the lid piece 10 is peeled off to leave a gap 3 from the filling port 7. The aqueous liquid a can be injected into the inside, and at the time of injection, the lid 10 closes the injection port 7 again to prevent the non-fluidic aqueous layer 9 from coming out.

The constituent wall 2 of the container body 1 is made of a general liquid-impermeable synthetic resin, for example, food paper, laminated paper, impregnated paper, polystyrene, polyvinyl chloride, polyethylene terephthalate, polypropylene or foams thereof. And other synthetic resins. Although not shown, the void portion 3 in the constituent wall 2 includes the entire bottom wall portion 2a and the side wall portion 2b including the upper half of the side wall portion 2b, and even the lid in the case of a container with a lid. It may be configured such that the inside of all the walls surrounding the containing portion 11 is formed of a non-fluidic aqueous layer.

The following examples can be given as examples of the composite body based on the water absorbent resin 4 and the fibrous substance 5 in the void 3.

FIG. 4 shows the absorbent paper 12 with the water-absorbent resin 4 as the fibrous substance 5.
In the above, the sandwich-shaped composite body is illustrated, and this embodiment can also obtain the actions and effects similar to those of the composite body illustrated in FIG.

FIG. 5 exemplifies a complex of the water-absorbent resin 4, the fibrous substance 5, and the powder 6, and according to this embodiment, the first
Actions and effects similar to those of the composite illustrated in the figure can be obtained.

Various methods can be adopted to combine the water-absorbent resin 4 with the fibrous substance 5 and the powder 6 to form a composite. For example, the water-absorbent resin 4 can be used for the fibrous substance 5 such as paper, cloth, and non-woven fabric. It is sandwiched between them, or the water-absorbent resin 4 and the pulverized pulp or other fibrous substance 5 are mixed in a dry or wet manner and then formed into a sheet, or the water-absorbent resin 4 and the powder 6 are bound by a binder. You may make it granular and combine with a fibrous substance. Further, the natural fiber or the artificial fiber is impregnated with an aqueous solution of an acrylate-based monomer or an aqueous solution of an acrylate-based monomer containing a crosslinkable monomer, and after polymerization of the monomer, if necessary. A method of obtaining a sheet-shaped absorber by drying may be used. As a method of forming such a sheet, for example, JP-A-61-2753
The methods described in No. 55 and JP-A No. 61-55202 can be used.

The water-absorbent resin 4 absorbs a large amount of water in water and swells to form a hydrogel. For example, starch-
Hydrolyzate of acrylonitrile graft copolymer, neutralized product of starch-acrylic acid graft polymer, saponified product of acrylic acid ester-vinyl acetate copolymer, crosslinked polyvinyl alcohol modified product, polyacrylic acid salt crosslinked product, crosslinked isobutylene -Maleic anhydride copolymers, hydrolyzates of crosslinked polyacrylonitrile, and the like.

The fibrous substance 5 is a natural fiber such as pulp, cotton, or hemp, or an artificial fiber such as rayon, polyester, nylon, polypropylene, etc., and these fibers are formed or knitted or bonded into a sheet by using a binder or heat. For example, paper, cloth, non-woven fabric, and a sheet-like material obtained by stacking these layers can be used.

The powder 6 is silica, clay, calcium carbonate, mica,
Common inorganic or organic fillers such as activated carbon, wood powder, rice husk, rubber and synthetic resin powder can be used.

(Effect of Device) Therefore, the present invention has the following advantages.

Just by injecting an aqueous liquid from the inlet, the air in the voids escapes from the air vent holes due to the inflow of the aqueous liquid and the swelling of the water-absorbent resin that absorbs the liquid, and the non-fluidic water due to the hydrogel in the voids The layer can be formed reliably and easily.

By forming the bottom wall part with a non-fluidic aqueous layer in the voids, especially in refrigerating equipment such as stores, it is possible to exert a great cold-retaining effect by the cooled non-fluidic aqueous layer in addition to cold air. Therefore, the food can be effectively kept cold even when it is stored in the refrigerator at home, and the problem of food binding (poor handling that the food and container do not separate from each other) and contamination Don't worry.

The cooled non-flowing aqueous layer allows you to keep it cool while you take it home from the store and even when it is lined up on the table.

If the water-absorbent resin in the void is a composite with the fibrous substance, the other fibrous substance of the composite is effective as an extender, and if the water-absorbent resin is retained and evenly distributed in the void. By acting as a path for the aqueous liquid, the aqueous layer formed in the voids is adjusted to have the same thickness in each part, and a uniform protective effect can be exhibited in each part of the constituent wall.

Light weight until the use stage where the aqueous liquid is injected, the distribution stage,
In particular, it is easy to transport in large quantities from the manufacturer to the intermediary and the retailer, and is easy to handle.

It is useful for various foods, especially fresh foods that require freshness retention.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of implementation of the container of the present invention. Second
The figure is a partially enlarged vertical cross-sectional view showing a state in which an aqueous liquid is being injected from the injection port into the void. FIG. 3 is a vertical cross-sectional view showing a state in which the water-absorbent resin in the void portion gels to form a non-fluidic aqueous layer. 4 and 5 are partial vertical cross-sectional views illustrating other respective aspects of the composite body in the void portion. FIG. 6 is a vertical sectional view showing a conventional example. In the figure, 1 is a container body, 2 is a constituent wall 2A is an outer wall surface portion, 2a is a bottom wall portion, 2b is a side wall portion, 3 is a void portion, 4 is a water-absorbent resin, 5 is a fibrous substance, 6 is powder, and 7 is pouring. Inlet 8 is an air vent hole, 9 is a non-flowable aqueous layer 10 is a lid piece, 11 is a container body containing portion 12 is absorbent paper, and a is an aqueous liquid.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshihiro Ikeda, 1575 Mizue, Kurashiki-shi, Okayama Pref., China Chemical Industry Co., Ltd. In the factory (56) Reference JP-A-59-187568 (JP, A) JP-A-61-59171 (JP, A) Actual opening S60-190671 (JP, U) Actual opening Shou 62-99558 (JP, U ) Actual development Sho 58-143232 (JP, U) Actual development Sho 58-103777 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A void is provided in at least a bottom wall of a constituent wall of a container body, and a composite of a water-absorbent resin and a fibrous substance is present in the void, and the outer wall surface is higher in the void. A food container with an inlet for an aqueous liquid and a vent hole.