KR20050094808A - Food container - Google Patents

Abstract

A food container formed by compressing a mixed material composed of unboiled bamboo fibers and mixed fibers prepared by mixing unboiled grass family vegetable fibers and unboiled legume family vegetable fibers such as lespedeza fibers. A food container formed by compressing a mixed material composed of the above mixed material, a small amount of water repellent, and a small amount of paper strength additive.

Description

Food Containers {FOOD CONTAINER}

In particular, the present invention relates to a food container, which is made of non-wood fibers as a main material, which prevents mold generation during food packaging and use as a tableware, protects food, and solves environmental pollution problems even when disposed of.

As for the food packaging and the simple disposable tableware, trays, cups, and air-shaped containers made of a foamed synthetic resin sheet material made of styrol resin are widely used. In addition, as a food container, the container which shape | molded the paper in which the synthetic resin sheet was laminated | stacked to a predetermined shape, such as a coffee cup, is also used by some.

Since conventional food containers made of such raw materials have no bactericidal and anti-fungal properties in the raw materials themselves, the packaged foods may decay or mold in a little while, for example, in the case of raw foods such as side dishes. There was a flaw. In particular, among the molds, blue mold, black mold, black skin mold, and the like are highly incidence, and it is difficult to prevent mold from occurring for these three molds. In addition, in a food container made of laminated paper as a raw material, since paper, which is a main raw material, uses wood-based pulp, not only is it accompanied by logging of raw materials, use of a large amount of scientific drugs, etc., but also unnecessary food containers. When wastes are disposed of, for example, they are not perishable even when they are buried in the soil at a landfill, etc., and harmful gases are generated when incinerated, and there is a problem to be solved, such as environmental destruction, pollution, and pollution. In addition, the development of food containers capable of solving the above problems has been strongly desired.

1 is a perspective view showing the outer appearance of a food container of a first embodiment of the present invention.

Fig. 2 is a perspective view showing the appearance of a food container of a second embodiment of the present invention.

3 is a longitudinal sectional view in the longitudinal direction of the use state of the food container of the second embodiment of the present invention.

4 is a perspective view showing the outer appearance of a food container of a third embodiment of the present invention.

Accordingly, an object of the present invention is to mass-produce using inexpensive vegetable materials and unused materials in order to solve the above problems in the packaging, protection and preservation of foods, and to prevent the deterioration or damage of foods caused by bacteria or mold. In addition, the present invention provides a food container that is low in price, tough and safe and harmless, and which is biodegradable even when discarded and left in the soil when discarded, and which does not generate harmful substances even when incinerated.

According to the present invention, there is provided a food container formed by compression-molding a mixed material comprising a mixture of rice and vegetable fibers and legumes such as legumes with unboiling and a non-boiling bamboo fiber. . In addition, by pressing compression molding of a mixed fiber obtained by mixing soybean and vegetable fibers such as rice, plant fiber, and barley with unboiling and a small amount of waterproofing agent and an intensifier for a non-boiling bamboo fiber, respectively. It provides a food container made by.

In a preferred embodiment, the plant material to be used is about 7% to 50% by weight of raw fiber obtained from bamboo, stem, leather, seam, etc. of bamboo having antimicrobial properties, and the fiber of rice and plant fiber of rice plants such as reed The mixed material obtained by mixing approximately 50% to 93% of the mixed fibers which are approximately equal weight mixed and boiled is molded under the conditions of forming temperature of 180 ° C or higher, around 200 ° C, molding pressure of about 3kg / cm2 and molding time of about 25Sec. do. In this case, even if a binder corresponding to the sizing agent in paper is not added, the fibers and the fibers are bound by hydrogen bonding, thereby maintaining a predetermined shape as a container. When strength is required for a container, content of a bamboo fiber is made large. About 30% of content is suitable. In addition, the food container may be the above-mentioned mixed fiber in the case of foods with low moisture such as nuts and dried sweets, but in the container into which water or hot water is injected, such as a watery food or a cup for coffee, A small amount (3 to 5% by weight) of a water repellent and an oil reinforcement agent is mixed with respect to the total weight. As the water repellent, a silicon-based resin, a rosin derivative-based resin, and the like, and a water-resistant and oil-reinforcing agent, a polyacrylamide-based resin and the like are suitable.

As the means for forming the food container, the bamboo fiber and the boiled mixed fiber may be directly heated by pressing in a mold of a predetermined shape as described above, but these materials are suspended in water to form a slurry, Needless to say, you can make it as a means to open and press. As described above, since the raw fiber of bamboo in the material has antimicrobial and antifungal properties, spores of bacteria or fungus spontaneously attached in the air or from other substances are inhibited from growth, thus decomposing the contained food. I have a protective action against damage.

The food container of the present invention has a moisture control ability in a range of 7% to 25%, and when the humidity in the surrounding air is high, the water vapor is adsorbed to lower the humidity, and when the humidity is low, the adsorbed water vapor is released to normal state of the contents. It has the function of automatically adjusting the humidity to the maintenance of. Therefore, when used as a container, it can withstand temporary drying of the outside air and can also protect the food from over-humidity.

The molded food containers can be used not only for packaging containers for fish, meat, other fresh foods, buildings, lunch boxes, etc., but also as simple disposable dishes such as ramen cups, coffee cups, udon noodles, and rice bowls.

Since the raw materials are used materials which have been discarded without being used until now, it is possible to reduce the material cost and reduce the manufacturing cost. In addition, even when discarded after use, since low-temperature incineration is possible, the incinerator is not damaged and dioxins are not generated. In addition, even when discarded and buried in the soil as it is biodegraded by bacteria or enzymes in the soil to become a fertilizer, contributes to the improvement of the soil and contribute to the purification of environmental hygiene.

Best way for carrying out the invention

Hereinafter, referring to the drawings, in particular, FIG. 1, the first embodiment of the present invention is a tray-type container for use in the packaging of relatively dried foods, which comprises about 20% of bamboo fibers. , About 40% of the fiber of the reed and about 40% of the filament of fiber are mixed to form a mixing material for molding. This mixed material is shape | molded over 24 second on conditions of the temperature of 200 degreeC, and the pressure of 3 kg / cm <2>. Fibers bind to each other by hydrogen bonding to maintain a predetermined shape as a tray. In this embodiment, since the burr-shaped margin is left around the opening of the container in the first molding with the mixed material as a sheet, the margin is cut by the second finishing molding to remove the margin. The external shape of this embodiment is shown in FIG.

Next, with reference to Figs. 2 and 3, the second embodiment will be described. This embodiment is a tray-type container used for packaging a relatively juicy food such as meat. About 20% of the fiber of bamboo, about 40% of the fiber of reed and about 40% of filamentous fiber are mixed, and 2% of the polyacrylamide resin is mixed as a water-resistant and strength-reinforcing agent to prepare a molding material for molding. This mixed material is shape | molded over 24 second on conditions of the temperature of 200 degreeC, and the pressure of 3 kg / cm <2>. Fibers bind to each other by hydrogen bonding to maintain a predetermined shape as a tray. This embodiment also makes the mixed material a product by molding twice in a sheet shape. The appearance of this embodiment is shown in Fig. 2 and the state in use is shown in Fig. 3. In addition, although illustration is abbreviate | omitted, by forming it similarly to 2nd Example using the same material, a lunch box container can be produced only by changing a shape.

Next, a third embodiment will be described with reference to FIG. This embodiment is a disposable coffee cup for use in a vending machine or the like. About 30% by weight of the fiber of bamboo, about 35% by weight of the fiber of reed and about 35% by weight of filamentous fiber are mixed, and 2% by weight of polyacrylamide resin and 3% of waterproofing agent of silicone as waterproofing agent % Is mixed and used as a molding material for shaping | molding. In this embodiment, the mixed material is suspended in water to form a slurry, and the paper is formed into a substantially container in a papermaking network, and then molded over 24 seconds under conditions of a temperature of 200 ° C. and a pressure of 3 kg / cm 2. The external shape of this embodiment is shown in FIG. C is a container body. In addition, in the disposable cups for coffee sets sold as packs of coffee beans, filters, etc., not for vending machines, the handle 3 is crimped at the time of final molding, as indicated by a virtual line in the figure. do. Moreover, it goes without saying that the container for noodles and the bowl for rice bowl can also be implemented by shape | molding similarly using the same material as 3rd Example.

Claims (4)

A food container comprising a pressurized compression molding of a mixed fiber comprising a mixture of botanical fibers of legumes such as rice, plant fibers, and barley, with unboiling and bamboo fibers of unboiling. It is made by pressure-compression molding a mixed fiber obtained by mixing soybean and vegetable fiber such as rice, plant fiber and fever with unboiling, and a mixed material formed by mixing a small amount of a waterproofing agent and an intelligence enhancer with the unboiling bamboo fiber. Food container characterized in that. The food container according to claim 1 or 2, wherein the mixing ratio of the bamboo fibers is 7% by weight or more and 50% by weight or less. The food container according to claim 1 or 2, wherein the weight mixing ratio of the plant fiber of legumes such as rice, plant fiber and barley is approximately equal.