KR20030037530A - Disposable Starched Utensils and the Manufacturing Process - Google Patents

Disposable Starched Utensils and the Manufacturing Process Download PDF

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Publication number
KR20030037530A
KR20030037530A KR1020010068747A KR20010068747A KR20030037530A KR 20030037530 A KR20030037530 A KR 20030037530A KR 1020010068747 A KR1020010068747 A KR 1020010068747A KR 20010068747 A KR20010068747 A KR 20010068747A KR 20030037530 A KR20030037530 A KR 20030037530A
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South Korea
Prior art keywords
starch
container
disposable
water
coating
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KR1020010068747A
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Korean (ko)
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박재석
신동관
정용봉
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박재석
신동관
정용봉
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Priority to KR1020010068747A priority Critical patent/KR20030037530A/en
Publication of KR20030037530A publication Critical patent/KR20030037530A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7132Bowls, Cups, Glasses

Abstract

PURPOSE: A disposable starch container and method for manufacturing thereof is provided to injection-mold the disposable starch container to diversify usages of the starch container and to coat the container to improve a waterproof property of the disposable starch container. CONSTITUTION: A method for manufacturing a disposable starch container comprises the steps of: stirring the starch powder with the water and colorant; forming a starch droplet by passing a starch mixture through a heated extruder and cutting the starch mixture and forming an intermediate material of a solid starch pallet by freezing and drying the starch droplet; extruding the starch container from a mould by melting the starch pallet; and coating and drying the molded starch container with a polyvinyl acetate copolymer liquid.

Description

일회용 전분제 용기 및 그 제조방법{Disposable Starched Utensils and the Manufacturing Process}Disposable Starched Utensils and the Manufacturing Process

본 발명은 옥수수전분으로 저공해 일회용 전분제 용기를 제조하는 방법 및 동 방법으로 제조된 전분제 용기를 구체적으로 지정하는 발명에 관한 것이다.The present invention relates to a method for producing a low-pollution disposable starch container with corn starch and to an invention specifically specifying a starch container produced by the same method.

본 발명에서는 전분제 용기를 용도에 따라 다양하게 사출 성형하고, 그 도포 물질의 두께를 조절하여 미려한 외관을 갖는 용기를 제작하여 상품성을 제고함으로써 종래 플라스틱 등 합성수지제 용기를 전분제 용기로 대체하고, 폐기시에도 환경에 미치는 영향을 줄이는데 그 목적이 있다.In the present invention, the starch container is injection-molded in various ways according to the use, and by adjusting the thickness of the coating material to produce a container having a beautiful appearance to improve the marketability, replacing the conventional plastic container such as plastic starch container, Its purpose is to reduce the environmental impact of disposal.

전분으로 된 일회용 용기는 인체에 무해하면서 일회용으로 사용하고 폐기하더라도 습기에 노출되는 경우에는 분해되어 고형성분을 남기지 않음으로써 환경친화적 일회용 용기로서 애호를 받아 왔으나 습기에 약하여 수분에 10분이상 노출되면 쉽게 분해하기 시작하여 형상이 파괴되어 일회용 용품으로서 지나치게 수명이 짧고, 손에 쉽게 녹아 불쾌감을 불러 일어키는 문제점이 있었다.Starch disposable containers are harmless to the human body, and have been favored as environmentally friendly disposable containers because they do not decompose and leave solid ingredients when exposed to moisture even when used and disposed of. It started to disintegrate and the shape was destroyed, and the disposable life was too short, and it was easily dissolved in the hand, causing discomfort.

종래 1회용 용기의 조성물로서 폴리비닐아세테이트 호모폴리머용액에 볏짚, 톱밥분말 등 자연 조재료를 혼합하여 금형에 넣어 압축해 내는 조성물 제조 방법(대한민국 특허공개공보 공개번호 제95-29317호)이 있었으나 폴리비닐아세테이트 호모폴리머용액을 적게 사용하면 성형이 되지 않고 부서지며, 과도하게 사용하는 경우 자연분해를 지연시키고, 경제성이 없는 문제점이 있고, 다른 기술로서 전분에 기포조정제로서 폴리비닐알코홀과 탄산칼슘 등을 혼합하여 제조하는 방법(일본특허공개 평 제8-157645호)이 있고, 또 다른 기술로서 전분에 알케닐호박산을 첨가하여 전분유도체를 만들고 이에 폴리비닐비닐알코홀 등 가소제와, 이에 스테아린산등 유연제와, 안정제로서 검(gum)류를, 윤활제로서 유동파라핀 등을 첨가하고, 탈착제로서 인지질 등을 혼합한 일회용 용기제조방법(대한민국 특허등록 제10-0276839호)가 있으며, 또 다른 기술로서 폴리비닐알코홀에 단백질을 혼합하고 이에 고구마전분과 명반, 보습제 등을 1차 혼합한 다음, 이에 다시 옥수수전분을 넣어 혼합한 후, 이를 고온의 압출금형에서 성형하고 이를 다시 냉각 금형으로 저온에서 냉각 성형하는 방법(대한민국 특허등록 제10-0197035호 내지 제10-0197036호)가 있으나 많은 종류의 또는 많은 량의 유기용제와 혼합하여 사용함으로써 상호반응 등에서 나오는 부수물질로 인체유해성이 검증되지 않고, 특유의 전분제품의 특수성인 내수성이 취약하여 쉽게 손에서 용해되거나 전분 외피가 미려하지 못하여 상품으로서 품질이 저하되는 문제점이 있었다.Conventionally, as a composition of a disposable container, there was a method of manufacturing a composition (Korean Patent Laid-Open Publication No. 95-29317) in which polyvinylacetate homopolymer solution was mixed with natural crude materials such as rice straw and sawdust powder and put into a mold. If the vinyl acetate homopolymer solution is used less, it will not be molded and will be broken. If used excessively, it will delay the natural decomposition and have no economic feasibility. Another technique is to use polyvinyl alcohol and calcium carbonate as bubble modifier in starch. There is a method of mixing and manufacturing (Japanese Patent Application Laid-Open No. 8-157645), and another technique is to add starch derivatives by adding alkenyl amber acid to starch, thereby making a plasticizer such as polyvinyl vinyl alcohol, softener such as stearic acid, Gum is added as a stabilizer, liquid paraffin is added as a lubricant, and phospholipid is mixed as a desorbent. There is one disposable container manufacturing method (Korean Patent Registration No. 10-0276839), and another technique is to mix protein with polyvinyl alcohol, firstly mix sweet potato starch, alum and moisturizer, and then corn starch. After mixing and mixing, it is molded in a high temperature extrusion mold and cooled again at a low temperature with a cooling mold (Korean Patent Registration Nos. 10-0197035 to 10-0197036), but there are many types or large amounts of organic When used in combination with solvents, it is a side substance from mutual reactions, which is not tested for harmful effects to humans, and because of its weak water resistance, which is a characteristic of unique starch products, it is not easily dissolved in the hand or the starch shell is not beautiful. there was.

상기와 같은 종래 일회용 전분제 용기는 압출 성형에 의하여 제조됨으로써 이쑤시개 등 단순한 막대형 또는 봉형 용기 위주의 제품이었으며, 전분에 특유한 친수성, 단명성, 끈적거림 등의 문제점이 있었다.The conventional disposable starch container as described above was manufactured by extrusion molding, and was mainly a simple rod-shaped or rod-shaped container-oriented product such as toothpicks, and had problems such as hydrophilicity, shortness, and stickiness peculiar to starch.

본 발명은 종래 전분제 용기의 위와 같은 용도의 한정성과 단점을 보완하기 위하여 안출된 것으로서 전분제 용기를 용도에 따라 다양하게 금형기에서 사출 성형하고, 그 내수성을 증가시키기위하여 인체에 무해하면서 환경친화적인 내수성 물질(본 발명에서 내수성이라함은 영구적인 내수성이 아니라 수용성이기는 하되 경화되면 물과 접촉하더라도 분해를 지연시키는 정도의 내수성을 지칭하는 것임)을 성형된 전분제 용기의 표면에 도포하는 방법을 강구하려는 것이다.The present invention has been made in order to supplement the limitations and disadvantages of the use of the conventional starch container as the starch container injection molding in various molds according to the use, harmless to the human body to increase the water resistance and environmentally friendly A method of applying a water-resistant material (water resistance in the present invention is not permanent water resistance but water solubility, but refers to the water resistance to the extent of delaying decomposition even when contacted with water when cured) is applied to the surface of the molded starch container. I will.

따라서 종래의 막대나 봉 형태의 일회용 전분제 용기를 압출 성형하던 방법에서 탈피하여 본 발명에서는 다양한 형태와 모양을 갖는 일회용 전분제 용기를 용도에 따라 사출 성형하고, 성형된 전분제 용기를 내수성 물질로 코팅 도포함으로써 일회용 전분제 용기의 용도를 다양화하고, 이를 폐기하는 경우에도 환경오염 물질의 배출을 줄이고자 하는 것이다.Therefore, in the present invention, the conventional starch container in the form of a rod or rod is removed from the extrusion method, and in the present invention, a single starch container having various shapes and shapes is injection molded according to a use, and the molded starch container is formed of a water-resistant material. The coating is applied to diversify the use of the disposable starch container and to reduce the emission of environmental pollutants even when discarded.

본 발명은 일회용 전분제 용기 사출 성형방법 및 동 방법으로 제조된 용기에 관한 것으로서 중량비 옥수수전분이 80%, 물 20% 및 기타 색소 및 코팅제 1% 내외로 구성된다.The present invention relates to a disposable starch container injection molding method and a container manufactured by the same method, which comprises about 80% by weight corn starch, 20% water and 1% of other pigments and coatings.

본 발명에서 전분은 고유의 성질인 흡습성이 강하여 건조된 상태에서도 20%의 수분을 포함하고 있고, 찬물에서는 녹지 않으나 뜨거운 물에서 녹아 졸이 되고, 식으면 굳어져서 백색을 띠는 겔이 되는 성질과 전분 특유의 미셀구조의 성질을 이용하여 분말상태의 가공한 옥수수전분에 물과 첨가색소만을 첨가하여 공정에 따라 가열량과 시간을 기술적으로 유지함으로써 일회용 전분제 용기를 사출 제조하는 방법에 관한 것이다.In the present invention, starch has a high hygroscopic property, which is inherent in nature, and contains 20% of moisture even in a dried state, and is insoluble in cold water, but melts in hot water to become a sol, and when it cools, it becomes hard to become a white gel. The present invention relates to a method of injection-molding a disposable starch container by adding only water and additional pigments to a powdered corn starch using characteristic micelle-specific properties of starch and maintaining the heating amount and time according to the process.

또한 본 발명에서는 1차 성형된 전분제 용기 제품이 내습성에 약한 점을 보완하기 위하여 그 표면에 용기의 용도에 따라 폴리비닐아세테이트 코폴리머로 1회 이상 도포하는 것을 특징으로 한다.In addition, the present invention is characterized in that the primary molded starch container product is applied at least once with a polyvinyl acetate copolymer according to the purpose of the container to compensate for the weak point of moisture resistance.

본 발명의 일회용 전분제 용기를 제조하는 방법의 제1단계는 원료인 분말상태의 전분을 물과 색소를 섞어서 교반기에서 교반함으로써 이를 착색, 숙성하는 단계이다.The first step of the method for producing a disposable starch container of the present invention is a step of coloring and aging the powdered starch, which is a raw material, by mixing water and a pigment and stirring it in a stirrer.

본 발명에 있어서 전분의 원료는 시중의 분말상태로 공급되는 옥수수전분을 사용한다. 상기 옥수수전분은 전형적으로 특별한 이미, 이취가 없고, 수분이 14%이하이며, 조회분이 0.15%이하이며, 조단백이 0.35%이하인 것을 사용한다.In the present invention, the raw material of starch is corn starch supplied in the form of powder on the market. The corn starch is typically used that has no special odor, less than 14% moisture, less than 0.15% crude starch, less than 0.35% crude protein.

물과의 교반은 10oC~40oC의 상온에서 실시하며, 전분 10Kg에 물 2Kg의 비율로 색소와 혼합하여 30분간 교반하여 80분간 숙성한다.Stirring with water is carried out at room temperature of 10 o C ~ 40 o C, mixed with a pigment in a ratio of 2Kg of water to 10Kg of starch, stirred for 30 minutes and aged for 80 minutes.

색소는 본발명의 제품을 착색하는 색소로서 천연의 자연색소를 사용하는 것이 바람직하다. 예를 들면 붉은 색의 제품을 제조하기 위하여는 당근색소를 사용하고, 녹색을 현출하기 위하여는 시금치액즙을 사용하는 것이 바람직하다. 원하는 제품의 색상에 따라 색소의 양은 조절할 수 있을 것이다.It is preferable to use natural natural pigment as a pigment | dye which colors the product of this invention. For example, it is preferable to use carrot pigment to produce a red product and spinach juice to express green color. The amount of pigment can be adjusted according to the color of the desired product.

제2단계는 상기 제1단계에서 착색되고 숙성된 전분혼합체(Hydrogel)를 용융점으로 가열된 압출기에 통과시키면서 이를 커팅하여 전분방울(Drops)을 형성하고, 상기 전분방울을 냉동시킨 후, 이를 건조시켜서 고체로 된 펠릿(Pellet)상태의 중간재를 형성하는 단계이다.In the second step, the starch mixture (Hydrogel) colored and matured in the first step is passed through an extruder heated to a melting point, and cut to form starch drops, and the starch droplets are frozen, and then dried. It is a step of forming an intermediate material in a pellet state of a solid.

상기 제1단계에서 착색되고 숙성된 전분혼합체를 용융점인 120oC로 가열된 압출기에 통과시켜서 지름이 5mm 내외로 커팅하여 전분방울을 형성하고 이어서 이를 컨베이어벨트로 이송하여 상기 전분방울을 -30oC의 냉각기에 통과시키면서 5분동안 냉각시킨 후, 이를 상온에서 건조시켜서 중간재인 착색된 전분펠릿을 형성한다.The starch drops to the first by the coloring in step 1 is passed through the fermentation of starch mixture in an extruder heated to a melting point of 120 o C in diameter is formed by cutting a 5mm drops of starch and out, and then transfer it to the conveyor belt -30 o After cooling for 5 minutes while passing through a C cooler, it is dried at room temperature to form colored starch pellets as intermediate.

상기 건조된 전분펠릿에 함유된 수분은 20% 내외로 유지하도록 한다. 이때 수분함량이 20% 이상이되면 성형된 제품이 유연해지고, 20% 이하이면 제품의 강도가 너무 강하여 쉽게 부러지는 경향이 있으므로 전분펠릿의 수분 함량을 20% 내외로 유지하는 것이 바람직하다.Moisture contained in the dried starch pellets is to be maintained at about 20%. At this time, when the water content is 20% or more, the molded product becomes soft, and when the water content is 20% or less, the strength of the product is so strong that it tends to be easily broken. Therefore, it is preferable to maintain the water content of the starch pellet at about 20%.

제3단계는 제2단계에서 형성된 전분펠릿을 용융점에서 용융시켜 냉각수가 흐르는 금형기에서 전분제 용기를 사출 성형하는 단계이다.In the third step, the starch pellet formed in the second step is melted at the melting point, and the starch container is injection molded in a mold machine in which cooling water flows.

상기 중간재인 전분펠릿을 최소한 낮은 온도에서 용융시켜서 전분 고유의 성분을 유지시키기 위하여 용융점인 120oC의 노즐에 통과시키면서 노즐내에는 경화성 스크루를 장착하여 용융시킨다.The starch pellets, which are the intermediate materials, are melted at least at a low temperature while passing through a nozzle having a melting point of 120 ° C. in order to maintain the intrinsic components of the starch.

본 공정에서는 전분제 용기를 용융점에서 사출시키는 기술이므로 사출시 전분의 윤활성과 유동성이 적으므로 사출시까지 용융된 전분의 점성을 그대로 유지한 상태로 사출금형에 도달시키기 위하여 하트런너(Hot Runner)에 통과시켜서 일정한 용기 모양이 형성된 금형기에 도달시킨 다음 냉각 금형기에서 사출 성형하는 단계이다.In this process, the starch container is injected at the melting point, so the lubricity and fluidity of the starch during injection is low. Therefore, in order to reach the injection mold while maintaining the viscosity of the molten starch until injection, it is necessary to It passes through the mold to form a container shape, and then injection molding in a cooling mold.

상기 성형된 전분제 용기를 아무런 변형이나 흠이 없이 용기를 추출해 내기 위하여 상기 금형기의 내부에는 평균 20oC 내외의 냉각수가 흐르도록 특수하게 제작된 냉각장치를 갖는 금형기를 사용하며, 금형기의 온도는 40~60oC를 유지하도록 한다. 상기 금형기내부에는 전분제 용기의 이형과 윤활을 원할히 하기 위하여 건성윤활필름재로서 이황화텅스텐(Tungsten Disulfide)이 0.5 ㎛으로 도포된 금형을 사용한다.In order to extract the molded starch container without any deformation or flaw, a mold machine having a specially manufactured cooling device is used to flow coolant of about 20 ° C. on the inside of the mold machine, and the temperature of the mold machine is Maintain 40 to 60 o C. In the mold machine, a mold coated with 0.5 μm of tungsten disulfide is used as a dry lubricating film material in order to facilitate release and lubrication of the starch container.

상기 건성윤활필름재로서 이황화텅스텐을 금형기 내부에 도포한 금형기를 사용하면 전분에 별이의 이형제를 첨가함이 없이도 금형기에서 전분으로 된 용기 제품의 이형을 원할히 할 수 있다.As the dry lubricating film material, using a mold machine coated with tungsten disulfide inside a mold machine, it is possible to smoothly release a container product made of starch in a mold machine without adding a starch release agent to the starch.

금형기 내부에 코팅되는 이황화텅스텐 도포제는 다이크로나이트라는 물질로 공지된 바 있고, 인체에 무해한 것으로 알려져 있다.The tungsten disulfide coating agent coated inside the mold machine is known as a dichromite material, and is known to be harmless to a human body.

제4단계는 상기 제3단계에서 성형된 전분제 용기를 컨베이어벨트를 통하여 통과시키면서 액상의 폴리비닐아세테이트 코폴리머 용액으로 분사 또는 담그기로 코팅하는 단계이다.The fourth step is coating the starch container formed in the third step by spraying or dipping with a liquid polyvinylacetate copolymer solution while passing through the conveyor belt.

본 공정에서 상기 전분제 용기의 도포제로서는 폴리비닐아세테이트 코폴리머용액을 사용한다. 상기 폴리비닐아세테이트는 상온에서 경화되면 무색, 무취, 무독의 투명하고 체내에 흡수되지 않는 것으로 인체에 무해하여 오래동안 추잉검등의 원료로 사용되어 왔는 것은 공지된 바와 같다.In this step, a polyvinylacetate copolymer solution is used as the coating agent of the starch container. The polyvinylacetate is colorless, odorless, non-toxic transparent and hardly absorbed by the body when cured at room temperature. It is known that it has been used as a raw material for chewing gum for a long time.

본 발명에서는 상기 폴리비닐아세테이트 코폴리머용액은 공지된 물성대로 상온에서 경화되면 내수성이 있어서 물에 쉽게 녹지 아니하고, 1시간 이상 물과 교반하는 경우에는 서서히 녹으므로 상기 폴리비닐아세테이트 코폴리머용액을 전분제 용기의 표면에 도포함으로써 전분제 용기를 상온에서 1시간까지 최초의 형상대로 유지시켜주는 역할을 한다.In the present invention, when the polyvinylacetate copolymer solution is cured at room temperature according to a known physical property, the polyvinylacetate copolymer solution is not easily dissolved in water and gradually melts when stirred with water for 1 hour or more, so that the polyvinylacetate copolymer solution is starch. The coating on the surface of the container serves to maintain the starch container in its original shape for up to 1 hour at room temperature.

본 공정에서 폴리비닐아세테이트 코폴리머용액의 도포 전착 및 건조를 용이하게 하기 위하여 에틸알코홀을 첨가하여 처리할 수 있으며, 상기 폴리비닐아세테이트 코폴리머용액을 도포하고 건조하는 과정을 일회 이상 반복함으로써 필요한 용도에 따라 내수성을 증가시킨 일회용 전분제 용기를 제조하는 것이다.In order to facilitate the electrodeposition and drying of the polyvinylacetate copolymer solution in this process, it can be treated with the addition of ethyl alcohol, and the process of applying and drying the polyvinylacetate copolymer solution one or more times for the necessary use. Therefore, to prepare a disposable starch container with increased water resistance.

상기 제3단계에서 금형기에서 추출된 용기는 철망으로된 컨베이어벨트로 낙하하고, 철망의 컨베이어벨트를 통과하면서 본 제품의 코팅제로서 폴리비닐아세테이트 코폴리머용액으로 분사되거나 용액에 담그기하여 통과하면서 제1차로 코팅처리된다.The container extracted from the mold machine in the third step is dropped into the conveyor belt made of wire mesh, and passed through the conveyor belt of the wire mesh, sprayed with the polyvinyl acetate copolymer solution as the coating agent of the product or immersed in the solution to pass the first It is coated.

상기 분사의 방법은 진공상태에서 분사하는 것이 제품의 표면코팅에 바람직하고, 1차로 도포된 상기 폴리비닐아세테이트 코폴리머 피막은 자외선열 건조후드(hood)를 갖는 송풍장치를 통과하면서 건조된다. 이 공정을 통하여 전분제 용기의 표면에는 무색, 무취, 무독의 투명한 약 0.01mm ~ 0.1mm 내외의 폴리비닐아세테이트 피막이 코팅 형성되며, 상기 전분제 용기 표면에 전착된 폴리비닐아세테이트 코폴리머 피막은 습기를 차단하는 역할을 한다.In the spraying method, spraying in a vacuum is preferable for surface coating of the product, and the polyvinylacetate copolymer coating applied first is dried while passing through a blower having an ultraviolet heat drying hood. Through this process, a polyvinylacetate film of about 0.01 mm to 0.1 mm in colorless, odorless and nontoxic transparent coating is formed on the surface of the starch container, and the polyvinylacetate copolymer film deposited on the surface of the starch container provides moisture. It serves to block.

상기 1차 코팅된 제품으로서는 아이스크림이나 요거르트용 숟가락, 또는 경구용 의약품 숟가락으로 사용할 수 있는 1차 코팅제품이 된다.The primary coated product may be a primary coated product that can be used as an ice cream or yogurt spoon, or an oral pharmaceutical spoon.

상기 1차 코팅제품은 내수성을 증가 시키기 위하여 제2차 코팅공정을 추가할 수도 있다. 이 경우에는 제품의 내수성이 증가하는 제품을 제조할 수 있을 것이다.The primary coating product may add a secondary coating process to increase the water resistance. In this case it will be possible to manufacture a product that increases the water resistance of the product.

상술한 본 발명은 공정을 위주로 한 실시례에 의하여 상세히 설명되었으나, 이 실시례는 본 발명을 설명하기 위하여 사용된 것이지 청구범위를 한정하거나, 용어의 의미를 제한하기 위한 것이 아니다. 본 발명의 기술적 사상을 벗어나지 않는 범위내에서 본 발명이 속하는 기술분야에서 통상의 지식을 가진자에게 다양한 변화와 변경이 가능함은 물론 균등한 다른 실시례가 가능함은 명백하다. 예를 들어 전분펠릿의 수분의 함량과 도포제 폴리비닐아세테이트 코폴리머용액 및 내수성 첨가제의 혼합 도포방법 등은 다양하게 변형할 수 있을 것을 것이다.Although the above-described present invention has been described in detail with reference to the process-oriented examples, these examples are used to explain the present invention and are not intended to limit the scope of the claims or the meaning of the terms. It is apparent that various changes and modifications as well as other equivalent embodiments are possible to those skilled in the art without departing from the technical spirit of the present invention. For example, the water content of the starch pellets and the mixed coating method of the coating agent polyvinylacetate copolymer solution and the water-resistant additive may be modified in various ways.

본 발명에서 일회용 전분제 용기를 사출 성형함으로써 전분제 용기의 용도를 다양하게 제작할 수 있고, 외피를 코팅 처리함으로써 일회용 전분제 용기의 내수성을 종래 약 10분내외에서 1차코팅제품의 경우 1시간내외로 증가시킬 수 있으며, 미려한 외관으로 상품성이 크게 향상된다.By injection molding the disposable starch container in the present invention, the use of the starch container can be variously manufactured, and by coating the shell, the water resistance of the disposable starch container is about 10 minutes in the prior art and about 1 hour in the case of the primary coating product. It can be increased, and the beautiful appearance improves the merchandise greatly.

또한 본 발명의 일회용 전분제 용기를 일회용으로 사용하고 폐기하더라도 습기에 1시간 이상 노출되는 경우에는 서서히 분해되어 고형성분을 남기지 않음으로써 환경친화적이고, 또한 생분해성 원료인 전분을 사용하기 때문에 사용후 폐기하여도 30일 내지 180일 사이에는 미생물에 의하여 완전히 분해되므로 2차 환경오염을 줄일 수 있다.In addition, even if the disposable starch container of the present invention is used for single use and discarded, when it is exposed to moisture for 1 hour or more, it is gradually decomposed to leave no solid component, so it is used and discarded after use because it uses environmentally friendly and biodegradable starch. Even if 30 to 180 days are completely degraded by microorganisms can reduce secondary environmental pollution.

본 발명의 전분제 용기 사출 제조방법을 적용하면 종래에 일회용 플라스틱제품이나 PVC 등 합성수지로 된 숟가락이나 포크 등 제품을 환경친화적인 생분해성 전분제 용기로 대체할 수 있다.Applying the starch container injection manufacturing method of the present invention can replace the conventional products such as disposable plastic products or spoons or forks made of synthetic resin such as PVC with environmentally friendly biodegradable starch container.

특히 본 제품은 인체에 무해하여 유아 및 어린이가 먹는 요거르트, 우유 등 인스턴트 식품 및 경구용 약품의 일회용 숟가락, 포크 등으로 사용할 수 있다.In particular, this product is harmless to human body, so it can be used as disposable spoons and forks for instant foods such as yogurt, milk, and oral medicines that infants and children eat.

Claims (2)

옥수수전분을 이용한 일회용 전분제 용기를 제조하는데 있어서 원료인 분말상태의 전분을 물과 색소를 넣어 교반기에서 교반하여 착색·숙성하는 제1단계와; 상기 숙성된 전분혼합체를 용융점으로 가열된 압출기에 통과시키면서 이를 커팅하여 전분방울을 형성하고, 상기 전분방울을 냉동·건조시켜서 고체로 된 전분펠릿의 중간재를 형성하는 제2단계와; 상기 제2단계에서 형성된 전분펠릿을 용융점에서 용융시켜 냉각수가 흐르는 금형기에서 전분제 용기를 사출 성형하는 제3단계와; 상기 성형된 전분제 용기를 액상의 폴리비닐아세테이트 코폴리머 용액으로 분사 또는 담그기로 1회 이상 코팅하고 건조하는 제4단계를 포함하는 일회용 전분제 용기 제조방법A first step of preparing a disposable starch container using corn starch, coloring and ripening the powdered starch as a raw material by adding water and a pigment and stirring it with a stirrer; Passing the aged starch mixture through an extruder heated to a melting point to form a starch droplet, and freezing and drying the starch droplet to form an intermediate material of solid starch pellets; A third step of melting the starch pellets formed in the second step at the melting point and injection molding the starch container in a mold machine through which cooling water flows; Method for producing a disposable starch container comprising a fourth step of coating and drying the molded starch container with a liquid polyvinyl acetate copolymer solution by spraying or dipping one or more times 제1항의 방법으로 제조된 일회용 전분제 용기Disposable starch container prepared by the method of claim 1
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