KR20090008119A - Nature biodegradable and heat resistant multipurpose spoon containing saw blade, fork and spoon - Google Patents

Abstract

A multi-purpose spoon is provided, which has the convenience of use and is conveniently carried and in which the deformation by the heat does not occur. A multi-purpose spoon is constituted as follows. The spoon part(10), the saw blade part(20), and the fork part(30) are formed into one body. The raw material of the multi-purpose spoon comprises 40-90 weight% of starch resin, 0-50 weight% of bio-decomposable material, and 10-50 weight% of inorganic additive pellet. The inorganic additive pellet is more than one or two materials selected among calcium carbonate, talc, kaolin, perlite, zeolite, clay pellet.

Description

Naturally Degradable and Heat Resistant All Purpose Spoons with Saw Blades, Forks and Spoons {NATURE BIODEGRADABLE AND HEAT RESISTANT MULTIPURPOSE SPOON CONTAINING SAW BLADE, FORK AND SPOON}

The present invention relates to a naturally degradable multi-purpose spoon is provided with a saw blade, a fork and a spoon integrally, in detail, the spoon portion 10, the saw blade portion 20, the fork portion 30 is integrally molded to the upper end of the container packaging material There is a convenience that can easily cut the packaging of the container that the heat-sealed film does not fall off easily to eat the contents; There is a fork part 30 to eat a form such as pork cutlet, there is no chopsticks, or children who are not familiar with chopsticks is given a function that can be used conveniently when eating. In addition, there is an advantage that the biodegradable starch resin having heat resistance as a main material is easily decomposed in nature, and is not deformed by heat even when used in a hot broth or the like.

       Plastics, one of mankind's biggest inventions, have been widely used in industrial fields because of its advantages of durability, processability, chemical resistance, relatively low cost, and light weight, which contributes greatly to the convenience of human life. However, since it is a hardly degradable substance that takes hundreds of years to fully decompose as a dysfunction, it remains for hundreds of years after it is discarded after use, which seriously affects environmental pollution such as soil, air, and water pollution.

       Currently, disposable spoons are mostly made of plastic and are processed through landfilling, incineration, recycling, etc., but landfilling is insufficient due to increasing garbage, and the phenomenon of collective egoism by local residents intensifies. As a result, landfills are difficult to secure. In addition, the ground is not stable due to the plastic waste, which is a thermoplastic polymer that takes hundreds of years to decompose even after landfill, and there are many problems in the use of landfills, and in case of incineration, dioxins, as described above, are generated along with scattering dust. Hazardous gases such as carbon monoxide are generated in large quantities, causing air pollution and serious harm to the human body. In the case of recycling, there is a side that is difficult to recycle because there are foreign substances such as chili oil according to the process used when eating food.

 As a way to solve these problems, disposable spoons made of polylactic acid (PLA), which use degradable plastics but are mainly used, have a heat resistance of 66.5 ° C, which can be bent when used in hot rice or soup. Due to the disadvantages of the deformation is not actively applied. The biodegradable raw materials developed to date have the disadvantage of being easily damaged due to their weak physical properties. Also, due to the high cost of raw materials, the economical efficiency is lowered, and the cooling time is long after the production of the product. .

 When the food is eaten in the open air or at home when the heat-sealed film at the upper end of the packaging material does not fall well is provided with a saw blade portion 20 that can be easily removed to remove the sealed film; Saw blades, forks and spoons that are provided with a function that can be used conveniently when eating foods such as pork cutlet, no chopsticks, or having a fork portion 30 for children who are not familiar with chopsticks. The purpose is to provide a naturally degradable multipurpose spoon. Another object of the present invention is to provide an environmentally friendly biodegradable multipurpose spoon equipped with heat resistance using starch resin. Still another object of the present invention is to provide a versatile spoon having low cost, natural degradability and heat resistance by using the pellets of the present inventors patented Korean Patent Application No. 10-2007-0089816.

The object of the present invention is achieved by injecting a degradable raw material pellet into a conventional injection molding machine equipped with a mold having a spoon part, a saw blade part and a fork part and injection molding at a processing temperature of 140 to 220 ° C. and a molding pressure of 5 to 20 tons. .

In the present invention, the amount of each raw material may be 40 to 90% by weight starch resin, 0 to 50% by weight biodegradable resin, 10 to 50% by weight inorganic additives.

The starch resin has a processing temperature of 100 to 230 degrees while passing one or two or more selected from corn, potato, tapioca, sweet potato, wheat, and rice starch through a twin extruder equipped with one or more vent holes. It is a pellet-shaped starch resin prepared in a length of about 2-8 mm by cooling and cutting the raw material that has undergone kneading, mixing, and thermochemical modification. The amount used may be 10 to 100% by weight, preferably 40 to 90% by weight based on the total weight. When using starch 90% by weight or more, there is a disadvantage in that the raw material price is increased, and moldability, physical properties, processability and water resistance are deteriorated. In addition, the use of less than 40% by weight has a disadvantage in that the biodegradation rate is slow in the natural environment.

The biodegradable resin can be used as needed, such as physical properties, strength reinforcement, biodegradable materials are PLA (Polylactic acid), PHBV (Poly-3-hydroxy phenyl valerate), PCL (Polycaprolactone), PBS (Polybutylene succinate), PHB (Poly-hydrxy butyrate), PHA (Poly-hydroxy alkanoate), PGA (Polyglycolic acid) can be used one or two or more selected from the mixture, the amount of use is 0 to 80% by weight based on the total weight of the composition , Preferably 0 to 50% by weight. When using more than 50% by weight, there is a problem that the heat resistance, physical properties, moldability, etc. are lowered, and there is a disadvantage that the cost is increased by using an expensive biodegradable resin.

The inorganic additives are commonly used inorganic fillers, one or two or more of calcium carbonate, talc, kaolin, pearlite, zeolite, and clay pellets may be used, and the amount thereof is based on the total weight of the composition. 5 to 70% by weight, preferably 10 to 50% by weight. In the case of using more than 50% by weight, there is an advantage that the cost is reduced, but there is a problem that the heat resistance, physical properties, moldability, etc. are lowered and the specific gravity is increased. When used in less than 10% by weight there is a disadvantage that the manufacturing cost increases.

Saw blades, forks and spoons according to the present invention is a natural decomposable and heat-resistant multi-purpose spoon is molded in one piece, convenient in use, there is an advantage that does not cause deformation by heat even when used in hot food, and also easy to carry There is an advantage. In addition, it is cheaper than existing biodegradable products, so it is excellent in industrial use, and it is completely decomposed after use, circulated to the natural ecosystem to increase organic matter in soil, and does not pollute the environment.

Hereinafter, the present invention will be described in more detail with reference to Examples. The following examples are intended to illustrate the invention and are not intended to limit the invention thereto.

<Example 1>

        45% by weight of corn starch, 2.18% by weight of glycerol monostearate, 1.6% by weight of calcium carbonate, 3.0% by weight of talc, 1.0% by weight of waxy wax were added to the mixer and mixed with high speed to obtain moisture from the raw materials. Mix while removing. Then add 28.2 wt.% PLA, 12 wt.% PHBV, 0.02 wt.% Benzoyl peroxide, to the mixer, then heat-mix at high speed to further remove and mix. After adding 7% by weight of PCL to the mixture, the raw material obtained by mixing at room temperature was used to prepare a starch resin having a pellet shape of about 2-8 mm in size using a twin extruder.

<Example 2>

        A multipurpose spoon was prepared at a processing temperature of 175 ° C. in a conventional injection molding machine by mixing 60% by weight of starch resin of Example 1, 10% by weight of PLA, and 30% of calcium carbonate pellets.

1 is a product photograph of a prototype according to the invention

2nd saw blade enlargement

3 is a fork part enlargement

Claims (4)

Naturally degradable and heat resistant multipurpose spoon with saw blade, fork and spoon characterized in that the spoon portion 10, saw blade portion 20 and fork portion 30 are integrally molded The raw material according to claim 1, wherein the raw material is 40 to 90% by weight of starch resin, 0 to 50% by weight of biodegradable material, and 10 to 50% by weight of inorganic additive pellet. And heat resistant multipurpose spoon         The biodegradable and heat resistant multipurpose spoon with saw blade, fork and spoon according to claim 2, wherein the biodegradable material is one or two or more selected from PLA, PHBV, PCL, PBS, PHB, PHA, and PGA. [4] The saw blade, fork and spoon of claim 2, wherein the inorganic additive pellet is one or more selected from among inorganic filler pellets commonly used, calcium carbonate, talc, kaolin, pearlite, zeolite and clay pellets. Natural Degradable and Heat Resistant Multi-Purpose Spoon

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