JPH0660786B2 - Food storage container for refrigerator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a refrigerator food storage container, and more particularly to a refrigerator food storage container suitable for preventing the growth of mold, yeast and bacteria.

[Conventional technology]

In the conventional refrigerator, vapor generated from a substance having a bactericidal property such as alcohol or chlorine dioxide is diffused, and the vapor is used to prevent fungus, germs, and deodorize.

Incidentally, as a device related to this type of refrigerator, there is, for example, Japanese Utility Model Laid-Open No. 58-9692.

[Problems to be solved by the invention]

In the above-mentioned conventional technique, the evaporation rate is high at first, but the amount of vapor gradually decreases, so that there is a possibility that the sustainability of the sterilization effect is insufficient.

An object of the present invention is to provide a food storage container for a refrigerator that can maintain the effect of suppressing the growth of mold, yeast, bacteria and other microorganisms attached to the food storage container.

[Means for solving problems]

The above-mentioned object is achieved in a refrigerator food storage container consisting of a case molded into a plastic material, wherein the plastic material contains glyceryl caprylate or glyceryl caprylate or glyceryl laurate. .

[Action]

The antifungal agent in the plastic material gradually comes out to the surface of the plastic material through the talc and titanium dioxide mixed in the plastic material. Thereby, the sustainability of the bactericidal effect is increased.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a main body of a freezer-refrigerator, which has a freezer chamber 2, a refrigerating chamber 3, an ice temperature chilled chamber 4, a refrigerated chilled chamber 5, and a vegetable chamber 6 inside. 7 is an ice temperature chilled case for storing foods stored in the ice temperature chilled chamber, 8
Is a refrigerated chilled case in which food stored in the refrigerated chilled room is placed. Reference numeral 11 denotes a temperature adjusting damper section for distributing cold air. Freezer room 2 to -18 ° C, cold room 3 to 4 ° C,
The bottom vegetable compartment 6 is kept at 6 ° C. Especially when frozen with fresh food, it has a bad texture and spoils the taste, but needs chilled storage, such as tuna or bonito sashimi, beef, etc. The chilled chilled chamber 5 in which raw vegetables and raw noodles are put is kept at + 1 ° C. Cold air is distributed to the ice temperature chilled chamber 4 and the refrigerated chilled chamber 5 through a cold air passage 12 provided on the rear surface of the refrigerator and kept at their respective temperatures. The arrows in the figure indicate the circulation direction of cold air.

The ice temperature chilled case 7 and the refrigerated chilled case 8 are made of polypropylene resin, polystyrene resin, or the like. If the surface of the constituent material in each of the above cases is in a clean state, no mold or bacterial growth is observed. However, when foods adhere to the surface of each of the above cases, the adhered matter from the foods serves as a nutrient source and molds and bacteria propagate. Therefore, the resin material forming the cases 7 and 8 contains a fungicide which prevents the growth of bacteria. Even if such a fungicide has a nutrient source on the surface of the plastic, it chemically damages the organisms of fungi and bacteria in the nutrient source and reacts with cytoplasm, oxygen protein, and inhibits its activity. It takes life force.

The antifungal agent must have the following conditions: (1) Penetration of surface deposits and antifungal effect. (2) It has a residual effect of penetrating the surface. (3) Prevents mold against a wide range of mold fungi,
Must be antibacterial. (4) Highly safe for the human body. (5) Do not adversely affect the strength of the plastic. (6) Easy to use and inexpensive. It is necessary that various conditions such as We have found glycerin caprate as a fungicide that satisfies the above conditions for various fungicides. An example of the antifungal agent capric acid glycerin ester will be described in detail. 99 parts of polypropylene natural material and 1 part of caprylic acid glycerin ester were mixed by a mixer, and the mixture was cut into a thin rod shape by an extruder. To make pellets, 94 parts of polypropylene natural material, 5 talc
Add 1 part to 5 parts and mix well and make an ice temperature chilled case by injection molding. Next, change the injection mold and make a refrigerated chilled case. A test piece is cut out from several places of the container made, and various fungi and representative fungi are tested for fungi and antibacterial effects are shown. This test product is capric acid glycerin ester 0.1
Although it is a concentration of 2%, similarly make a case of 2% concentration,
Its fungicidal and antibacterial effects were tested, and its strength was measured, but there was no practical problem. Even if the above-mentioned fungicide is not directly kneaded into the material of the case but a sheet kneaded with the fungicide is attached to the inside of the case, there is a fungicidal action. Also, the same effect can be obtained by making a sludge kneaded with an antifungal agent and installing it on the bottom of a fresh food storage case. Further, the same action can be obtained by applying an antifungal agent on the surface of the case to form a film. In addition to the above, the same effect can be obtained by adding glyceryl caprylate or glyceryl laurate.

As another embodiment of the present invention, a fungicide consisting of glyceryl caprylate or glyceryl caprylate or glyceryl laurate is ABS,
0.1 ~ 2.0 for styrene, polypropylene, polyethylene
%, And an inner box for a refrigerator, a door liner, an ice temperature chilled case, a refrigerated chilled case, and a vegetable case were molded.

As a result, an effect was recognized with a composition of 0.1%, 0.5% to 2.
If 0% is added, the growth of mold will be greatly suppressed. The effect is 0.5% for bacteria, and 2.0% is sufficient.

As another embodiment, the ice temperature chilled case 6 is a transparent styrene resin, the refrigerated chilled case 7 is a white styrene resin,
The vegetable case 8 is made of white polypropylene resin. When a fungicide is added to these cases, it must be uniformly dispersed in every part of the cases. For that purpose, in advance, add glycerin caprate or glyceryl caprylate, glycerin laurate in an amount corresponding to 0.1% to 2.0% to the base resin, mix well with a mixer and heat melt with an extruder. It is made into a shape and stirred with a screw and cut into a thin rod shape, which is subjected to injection molding. Surface permeability is a property necessary for maintaining the antifungal effect for a long time,
The white refrigerated chilled case 7 and vegetable case 8 contain titanium oxide as a pigment, so that the fungicide penetrates on the surface, but it is used as a reinforcing material to make it more reliable. Fill with 1-5% of talc. On the other hand, addition of glyceryl caprate or glyceryl caprylate or glyceryl laurate to a transparent styrene resin such as ice-chilled chilled case 6 has the effect of not impairing transparency.

According to this example, the fungicide is uniformly dispersed in each part of the molded product. As a result of measuring characteristic absorption by collecting samples from the front, back and both sides of the vegetable compartment by infrared spectroscopy, the variation in the concentration of the fungicide is within 5%.

Regarding the sustainability of the effect, since the fine particles of titanium oxide and talc are dispersed in the white styrene resin and polypropylene resin, the surface penetration of the antifungal agent proceeds through them. Even if the result of the fungus resistance test was carried out after the surface was continuously washed with water, the effect of the bacteria was not reduced. In addition, capric acid glycerin ester or caprylic acid glycerin ester, lauric acid glycerin ester is 0.1
%, The effect is exhibited, but the influence on the physical properties and the moldability are deteriorated, so the content must be 2% or less. Regarding safety, glyceryl caprate, glyceryl caprylate, and glyceryl laurate are designated as food additives and have no problem.

Based on the above example, the molded vegetable case was installed in a refrigerator and used for 3 months. As a result, the mold in the vegetable case was detected. It was revealed that the number of mold bacteria did not decrease significantly.

According to this example, fungi and fungal microorganisms adhering to foods from the distribution route of stored foods are fungicides of capric acid glycerin ester, and can prevent the growth of microorganisms by robbing vitality by antibacterial action. Is. as a result,
It is possible to prevent the odor of the microorganisms themselves or the organic acids excreted by the microorganisms, and to preserve the freshness of stored foods.

〔The invention's effect〕

According to the present invention, there is an effect that the duration of the germ effect can be lengthened.

[Brief description of drawings]

The figure is a sectional view of the refrigerator. 1 ... Main body of refrigerator / freezer, 2 ... Freezer, 3 ... Refrigerator,
4 ... Ice temperature chilled room, 5 ... Refrigerated chilled room, 6 ... Vegetable room, 7
… Ice temperature chilled case, 8… Refrigerated chilled case, 10… Cool air circulation fan

Claims (1)

[Claims] 1. A refrigerator food storage container comprising a case formed of a plastic material, wherein the plastic material contains glyceryl caprylate, glyceryl caprate or glyceryl laurate. Food storage container for refrigerator.