KR100573748B1 - A manufacturing method of chemical free starch-vessel - Google Patents

A manufacturing method of chemical free starch-vessel Download PDF

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KR100573748B1
KR100573748B1 KR1020040026314A KR20040026314A KR100573748B1 KR 100573748 B1 KR100573748 B1 KR 100573748B1 KR 1020040026314 A KR1020040026314 A KR 1020040026314A KR 20040026314 A KR20040026314 A KR 20040026314A KR 100573748 B1 KR100573748 B1 KR 100573748B1
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coating layer
rosin
starch
raw material
material mixture
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KR20050101045A (en
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황인채
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/10Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04Coating
    • C08J7/0427Coating with only one layer of a composition containing a polymer binder
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/08Heat treatment
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0004Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/02Cellulose; Modified cellulose
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2303/00Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08J2303/02Starch; Degradation products thereof, e.g. dextrin
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2393/00Characterised by the use of natural resins; Derivatives thereof
    • C08J2393/04Rosin
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2400/00Characterised by the use of unspecified polymers
    • C08J2400/16Biodegradable polymers

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wrappers (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

본 고안은 원료 혼합물에 송진을 일정 배합비로 첨가하여 가압발포된 성형물의 표면이 균일성을 갖음과 동시에 송진 코팅층을 형성시킴으로서 생분해성 수지 코팅층과의 접착력을 향상시킴에 따라 외부충격이나 외부환경에 의해 수지 코팅층이 박리되는 것을 방지할 수 있고, 따라서 저장성의 향상과 제품의 품질을 높일 수 있는 무공해 전분용기의 제조방법에 관한 것이다.The present invention adds rosin to the raw material mixture at a constant mixing ratio, thereby improving the adhesion to the biodegradable resin coating layer by forming a rosin coating layer while simultaneously forming a rosin coating layer on the surface of the press-foamed molding. The present invention relates to a method for producing a pollution-free starch container which can prevent the resin coating layer from being peeled off, thereby improving storage properties and improving product quality.

전분, 곡물가루, 셀룰로오즈, 발포제, 송진, 가압발포Starch, grain flour, cellulose, foaming agent, rosin, pressure foaming

Description

무공해 전분용기의 제조방법{A manufacturing method of chemical free starch-vessel}A manufacturing method of chemical free starch-vessel

본 발명은 무공해 전분용기의 제조방법에 관한 것으로, 좀 더 상세하게는 곡물의 전분을 주재료하여 제조되는 일회용 용기에 있어서 방수처리를 목적으로 처리되는 생분해성 수지 코팅층과 전분용기의 접착력을 향상시킬 수 있는 무공해 전분용기의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a pollution-free starch container, and more particularly, in a disposable container made from starch of grain, the biodegradable resin coating layer treated for waterproofing and the starch container can be improved. It relates to a method for producing a pollution-free starch container.

현대인의 식생활 중 패스트푸드에 대한 비중이 늘어감에 따라 일회용 용기류의 사용량도 매년 늘어가고 있는 추세로서, 이와 같이 사용되는 일회용 용기는 대부분이 폴리스티렌 등의 합성수지를 발포시켜 압축성형한 것이다.As the proportion of fast food in modern people's diet is increasing, the usage of disposable containers is increasing every year. Most of these disposable containers are compression molded by foaming synthetic resin such as polystyrene.

그러나, 상기한 발포수지 용기의 경우에는 장시간 사용하게 되면 스티렌트리머와 같은 환경호르몬에 노출되어 인체에 유해한 영향을 줄 수 있으며, 또한 사용하고 난 용기들은 매립시 50 ~ 100년 정도로 오랜 세월동안 썩지 않고 자연에 방치되기 때문에 사용 후 처리문제 또한 심각해지고 있다.However, in the case of the above-mentioned foamed resin container, if used for a long time may be exposed to environmental hormones such as styrene trimmer, which may have a harmful effect on the human body, and also used containers do not rot for a long time, such as 50 to 100 years when landfilled Due to its neglect in nature, post-processing problems are also becoming serious.

따라서 최근에는 곡물의 전분 또는 소맥분, 곡물의 표피에서 얻을 수 있는 천연 고분자물질로 폴리스티렌을 대체하려는 연구들이 활발하게 진행중이며, 이와 같이 곡물의 분말을 이용한 무공해 용기들을 제조하는 방법들을 살펴보면 다음과 같다.Therefore, recently, studies are being actively conducted to replace polystyrene with natural polymers obtained from grain starch or wheat flour, and the skin of grains. Thus, the methods of preparing pollution-free containers using powder of grains are as follows.

먼저, 대한민국 특허 제 96-0006565호에서는 곡물이 전분과 소맥분, 베이킹 파우다 및 식염을 혼합한 반죽물을 성형, 냉동 및 코팅하여 제조하는 방법을; 대한민국 특허 제99-0047173호에서는 곡물의 전분과 소맥분을 주원료로 하고, 당분 및 향로, 이스트 등을 보조재료로 하여 적정온도의 정제수에 혼합반죽을 숙성, 압출, 성형, 냉동건조하여 제조하는 방법을; 대한민국 특허 제99-0055567호에서는 분쇄된 벼, 보리, 조, 수수 등의 표피와 물 및 전분을 교반하여 성형, 코팅하여 제조하는 방법을 대한민국 특허 출원번호 제99-0037967호에서는 옥수수대나 각종 종피를 분쇄하여 만든 식물입자를 기본 원료로 하여 식물성 교를 넣고 교반한 후 성형제로 압축하여 제조하는 방법;들이 소개된 바 있다.First, Republic of Korea Patent No. 96-0006565 discloses a method of producing by molding, freezing and coating the dough mixture of grains starch and wheat flour, baking powder and salt; Korean Patent No. 99-0047173 discloses a method of producing by mixing, extruding, molding and freeze-driing mixed dough in purified water at an appropriate temperature using starch and wheat flour of grains as main ingredients, and sugars, incense burners, and yeast as auxiliary materials. ; In Korean Patent No. 99-0055567, a method of manufacturing by forming, coating, and agitating the surface of crushed rice, barley, crude, sorghum, and water and starch is disclosed in Korean Patent Application No. 99-0037967 for Method of preparing by compressing with a molding agent after putting the vegetable bridge as a basic raw material made by grinding the plant particles; has been introduced.

이와 같이 곡물의 전분 등을 주재료로 하여 제조되는 용기들은 인체에 무해하고 사용 후 분쇄하여 가축의 사료나 유기비료로 재활용이 가능할 뿐만 아니라 자연상태에 방치하더라도 환경공해를 유발하지 않고 부식이 가능하다는 효과로 인하여 추후에는 그 활용빈도가 더욱 높아질 것으로 사료된다.As such, containers made with starch of grains are harmless to the human body and can be crushed after use to be recycled as livestock feed or organic fertilizers, and can be corroded without causing environmental pollution even when left in nature. Because of this, the utilization frequency is expected to be higher in the future.

그러나, 상기한 전분용기의 경우 실용화단계에서 아직까지는 많은 문제점을 노출시키고 있다. 특히 방수처리를 목적으로 전분용기의 표면에 생분해성 수지를 도포하여 코팅층을 형성시키는 것이 일반적인데, 이와 같은 전분용기를 장시간 보관하거나 보관도중 외부환경 또는 충격에 의하여 생분해성 수지 코팅층의 박리가 일어나게 되어 제품의 질이 떨어지게 되는 문제점이 발생되었다.However, in the case of the starch container described above, many problems are still exposed in the commercialization stage. In particular, it is common to form a coating layer by coating a biodegradable resin on the surface of the starch container for the purpose of waterproofing, such peeling of the biodegradable resin coating layer is caused by the external environment or impact during such a long time storage or storage. The problem is that the quality of the product is degraded.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 전분을 주재료하여 제조되는 무공해 용기에 있어서 방수처리를 목적으로 처리되는 생분해성 수지 코팅층과 전분용기의 접착력을 향상시켜 외부요인에 의해 코팅층의 박리가 일어나는 것을 방지할 수 있는 전분용기의 제조방법을 제공하는 것을 목적으로 한다.Therefore, the present invention is to solve the problems as described above, in the pollution-free container manufactured by the starch as a main material to improve the adhesion of the biodegradable resin coating layer and starch container treated for the purpose of waterproofing peeling of the coating layer by external factors It is an object of the present invention to provide a method for producing a starch container which can prevent the occurrence of the oxidant.

상기와 같은 목적을 달성하기 위하여 본 발명은,The present invention to achieve the above object,

전분과 곡물가루, 셀룰로오즈 및 발포제를 포함하는 원료 혼합물을 교반하고 100 ~ 120℃에서 가열하여 호화시킨 후, 상기 호화된 혼합물을 소정의 성형기에 넣어 150 ~ 300℃의 증기를 가하면서 500 ~ 2000㎏/㎤의 압력 하에 가압발포 성형한 다음, 상기 성형물의 표면에 생분해성 수지를 도포하고 60 ~ 100℃의 온도에서 가열건조시켜 수지 코팅층을 형성하는 과정을 포함하는 무공해 전분용기의 제조방법에 있어서,After stirring the raw material mixture containing starch and grain flour, cellulose and blowing agent and heating it at 100-120 ° C., the mixture was put into a predetermined molding machine while applying steam of 150-300 ° C. to 500-2000 kg. In the method of manufacturing a pollution-free starch container comprising a step of forming a resin coating layer by applying a pressure-defoaming molding under a pressure of / cm 3, and then applying a biodegradable resin on the surface of the molding and heat-dried at a temperature of 60 ~ 100 ℃,

상기 원료 혼합물 100중량부에 대하여 송진분말이 4 ~ 16중량부가 추가로 첨가되는 것을 특징으로 하는 무공해 전분용기의 제조방법을 제공함으로서 달성된다.It is achieved by providing a method for producing a pollution-free starch container, characterized in that 4 to 16 parts by weight of the rosin powder is added to 100 parts by weight of the raw material mixture.

이하에서는 본 발명에 대하여 좀 더 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail.

본 발명에서는 전분용기의 원료 혼합물에 송진분말을 첨가제로서 첨가하는 것을 특징으로 하는데, 이러한 송진분말을 추가로 첨가함에 따라 추후 수지 코팅층과의 접착강도를 향상시킬 수 있음을 실험적으로 알 수 있었다.In the present invention, it is characterized in that the rosin powder is added as an additive to the raw material mixture of the starch container, and it can be seen experimentally that the adhesive strength with the resin coating layer can be improved later by adding such rosin powder.

이는 상기한 원료 혼합물을 호화시킨 후 열가압 발포성형하는 동안 송진분말 들은 기화되면서 물이나 오일성분은 외부로 배출되고 점성을 갖는 로진(rosin) 성분들이 남게 되는데, 이러한 로진 성분들은 성형물이 발포되면서 형성되는 표면의 미세구멍에 충진됨에 따라 성형물에 균일한 표면을 제공하고, 추후 건조과정에서 경화되면서 그 표면에 얇은 송진 코팅층을 형성하게 된다. This is because the rosin powder is evaporated while the rosin powder is vaporized during the thermo-pressure foaming after the above-mentioned raw material mixture is gelatinized, and the rosin component remains viscous. As it fills in the micropores of the surface to be provided, the molded article is provided with a uniform surface, and subsequently cured in a drying process to form a thin rosin coating layer on the surface.

따라서, 상기와 같이 균일한 표면과 송진 코팅층을 갖게 된 용기 성형물은 추후 그 표면에 형성되는 생분해성 수지 코팅층과의 접착강도를 향상시키는 요인으로 작용하게 된다는 것이다.Therefore, the container molding having the uniform surface and the rosin coating layer as described above will act as a factor for improving the adhesive strength with the biodegradable resin coating layer formed on the surface later.

이와 같은 송진분말은 원료 혼합물 100중량부에 대하여 4 ~ 16중량부가 첨가되는 것이 바람직한데, 이는 송진분말이 4중량부 미만으로 첨가되면 그 양이 너무 적어 전술한 효과가 미비하게 나타나게 되고, 반대로 송진분말을 16중량부를 초과하여 첨가하게 되면 그 양이 너무 많아 성형과정 중 용출된 레진성분이 금형에 달라붙게 되어 작업성이 좋지 않고 파손될 우려가 있기 때문이다.Such rosin powder is preferably added 4 to 16 parts by weight based on 100 parts by weight of the raw material mixture, which is too small if the rosin powder is added less than 4 parts by weight, the above-mentioned effect is insignificant, conversely rosin This is because when the powder is added in excess of 16 parts by weight, the amount of the resin is too high and the resin component eluted during the molding process sticks to the mold, resulting in poor workability and damage.

상기와 같이 사용되는 원료 혼합물은 전체량 100중량부에 대하여 전분 50 ~ 80중량부와 곡물가루 10 ~ 30중량부, 셀룰로오즈 5 ~ 15중량부 및 발포제 1 ~ 5중량부가 혼합된 것을 사용하는 것이 제조되는 용기의 충격강도나 인장강도 및 수축강도를 고려하여 가장 바람직하다.The raw material mixture used as described above is prepared by using a mixture of 50 to 80 parts by weight of starch, 10 to 30 parts by weight of grain flour, 5 to 15 parts by weight of cellulose and 1 to 5 parts by weight of blowing agent based on 100 parts by weight of the total amount. It is most preferable in consideration of the impact strength, tensile strength and shrinkage strength of the container.

상기한 원료 혼합물에 있어서, 전분의 경우 주로 감자 또는 고구마, 옥수수로 부터 추출된 것을; 곡물가루는 쌀가루, 찹쌀가루, 옥수수가루, 좁쌀가루, 보릿가루, 밀가루, 귀리가루, 콩가루 중에서 하나 이상 선택된 것을; 셀룰로오스는 시금치, 배추, 무등과 같은 채소분말, 솔잎분말, 소나무분말, 초목가루 분말 중에 선 택된 것을 사용하는 것이 바람직하다. 또한, 발포제는 탄산칼슘을 사용하는 것이 일반적이다.In the raw material mixture, the starch is mainly extracted from potatoes or sweet potatoes, corn; Grain flour is one or more selected from rice flour, glutinous rice flour, corn flour, millet flour, barley flour, flour, oat flour, soy flour; Cellulose is preferably selected from vegetable powders such as spinach, Chinese cabbage, radish, pine needle powder, pine powder, vegetation powder. In addition, the blowing agent generally uses calcium carbonate.

이와 같은 원료 혼합물에 부재료로서 명반이나 방부제, 글리세린, 아교와 같은 식용성 성형교를 부가적으로 미량 첨가할 수 있으며, 또한 원료 혼합물의 원활한 교반을 위하여 소정량의 물을 첨가시킬 수 있음을 밝혀둔다.It is noted that an additional small amount of edible forming bridges such as alum, preservatives, glycerin, and glue can be additionally added to the raw material mixture, and a predetermined amount of water can be added for smooth stirring of the raw material mixture. .

상술한 원료혼합물을 이용하여 본 발명의 전분용기를 제조하는 방법을 설명하면 다음과 같다.Referring to the method of manufacturing the starch container of the present invention using the above-described raw material mixture is as follows.

먼저, 전술한 배합비율로 혼합된 원료 혼합물과 송진분말을 소정의 교반기에 함께 투입하고 5 ~ 30분 동안 교반시킨 다음, 상기 교반물을 100 ~ 120℃의 온도에서 증탕하거나 증기로 쪄 호화시키고, 상기 호화된 혼합물을 소정의 성형기에 넣어 150 ~ 300℃의 증기를 가하면서 500 ~ 2000㎏/㎤의 압력 하에 가압발포 성형한 후, 상기 가압발포된 성형물의 표면에 생분해성 수지를 분사하거나 생분해성 수지액에 성형물을 침지시켜 수지 코팅층을 형성시킨 다음, 60 ~ 100℃의 온도에서 가열건조시켜 본 발명의 전분용기를 완성하게 된다. First, the raw material mixture and the rosin powder mixed at the above-mentioned mixing ratio are added together in a predetermined stirrer and stirred for 5 to 30 minutes, and then the stirred mixture is evaporated or steamed at a temperature of 100 to 120 ° C., After putting the luxurious mixture into a predetermined molding machine under pressure of 500 to 2000 kg / cm 3 while applying steam at 150 to 300 ° C., biodegradable resin is sprayed onto the surface of the press-foamed molding or biodegradable After forming the resin coating layer by immersing the molded product in the resin solution, it is dried by heating at a temperature of 60 ~ 100 ℃ to complete the starch container of the present invention.

이와 같은 과정으로 제조된 전분용기는 외부면에 방수처리를 목적으로 생분해성 수지 코팅층을 형성시킬 때 전분용기와 생분해성 수지의 접착력을 향상시켜 제조된 전부용기가 장시간 저장이나 외부요인에 의해 코팅층의 박리가 일어나는 것을 방지할 수 있다는 것이다.The starch container prepared by the above process improves the adhesion between the starch container and the biodegradable resin when forming the biodegradable resin coating layer for the purpose of waterproofing on the outer surface. Peeling can be prevented from occurring.

상기와 같은 전분용기는 그 사용용도가 컵이나, 접시, 그릇과 같은 접시류로도 사용이 가능할 뿐만 아니라 젓가락이나 숟가락, 재떨이, 문구용품, 콘센트, 각 종 케이스, 가전제품의 포장재 등의 다양한 분야에도 적용할 수 있음을 밝혀둔다.The starch container as described above can be used as a dish, such as a cup, a plate, or a bowl, and can be used in various fields such as chopsticks, spoons, ashtrays, stationery, electrical outlets, various cases, and packaging materials for home appliances. Note that it can be applied.

이하에서는 실시예를 통하여 본 발명을 좀 더 상세하게 설명하기는 하나, 하기의 실시예는 본 발명의 예시일 뿐, 본 발명이 하기의 실시예에 의하여 제한되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the following Examples are merely illustrative of the present invention, and the present invention is not limited by the following Examples.

<실시예 1><Example 1>

옥수수 전분가루 70g과 곡물가루 16g, 셀룰로오즈 10g, 발포제 4g으로 이루어진 원료 혼합물을 교반기에 투입하여 20분 동안 교반하고, 상기 교반물을 100℃에서 가열하여 호화시킨 후, 상기 호화된 혼합물을 접시 모양의 성형기에 넣어 300℃의 증기를 가하면서 1500㎏/㎤의 압력 하에 가압발포 성형한 다음, 상기 성형물의 표면에 생분해성 수지를 골고루 분사하고 70℃의 온도에서 가열건조시켜 제조된 전분용기를 실시예 1로 하였다..A raw material mixture consisting of 70 g of corn starch powder, 16 g of grain flour, 10 g of cellulose, and 4 g of blowing agent was added to a stirrer and stirred for 20 minutes. Pressurized foam molding under a pressure of 1500 kg / cm 3 while applying a steam of 300 ℃ to the molding machine, and then spraying the biodegradable resin evenly on the surface of the molding and dried by heating at a temperature of 70 ℃ Example 1 It was set to 1.

<실시예 2><Example 2>

실시예 1과 동일한 방법으로 제조하되, 상기 원료 혼합물 100g에 송진가루 2g을 추가로 첨가하여 제조된 전분용기를 실시예 2로 하였다.Prepared in the same manner as in Example 1, the starch container prepared by further adding 2g of rosin powder to 100g of the raw material mixture was set to Example 2.

<실시예 3><Example 3>

실시예 1과 동일한 방법으로 제조하되, 상기 원료 혼합물 100g에 송진가루 4g을 추가로 첨가하여 제조된 전분용기를 실시예 3으로 하였다.Prepared in the same manner as in Example 1, but the starch container prepared by further adding 4g of rosin powder to 100g of the raw material mixture was set to Example 3.

<실시예 4><Example 4>

실시예 1과 동일한 방법으로 제조하되, 상기 원료 혼합물 100g에 송진가루 10g을 추가로 첨가하여 제조된 전분용기를 실시예 4로 하였다.Prepared in the same manner as in Example 1, the starch container prepared by further adding 10g of rosin powder to 100g of the raw material mixture was set to Example 4.

<실시예 5><Example 5>

실시예 1과 동일한 방법으로 제조하되, 상기 원료 혼합물 100g에 송진가루 16g을 추가로 첨가하여 제조된 전분용기를 실시예 5로 하였다.Prepared in the same manner as in Example 1, the starch container prepared by further adding 16g of rosin powder to 100g of the raw material mixture was set to Example 5.

<실시예 6><Example 6>

실시예 1과 동일한 방법으로 제조하되, 상기 원료 혼합물 100g에 송진가루 20g을 추가로 첨가하여 제조된 전분용기를 실시예 6으로 하였다.Prepared in the same manner as in Example 1, the starch container prepared by further adding 20g of rosin powder to 100g of the raw material mixture was set to Example 6.

<실험예 1>Experimental Example 1

실시예 1 내지 실시예 6에 의해 제조된 전분용기를 ASTM D3359-87방법에 의거해 수지 코팅층의 접착력 시험을 다음과 같이 행하였다.The starch container prepared in Examples 1 to 6 was subjected to the adhesion test of the resin coating layer according to the ASTM D3359-87 method as follows.

먼저 각 전분용기를 가로 10㎝와 세로 10㎝로 잘라 시편을 제작하고, 상기 시편을 깨끗히 닦고 완전 건조시킨 다음, 생분해성 수지 코팅층이 형성된 상면에 Cross-cut기기를 이용하여 각각 간격이 1㎜인 격자를 형성시키고, 그 상면에 셀로판테잎을 붙이고 단단히 문질러 붙인 다음, 시편에 붙어 있는 셀로판테잎을 재빠르게 잡아당겼다.First, each starch container is cut into 10 cm and 10 cm lengths to prepare specimens. The specimens are wiped clean and completely dried. Then, a cross-cutting device is formed on the upper surface where the biodegradable resin coating layer is formed. A lattice was formed, cellophane tape was attached to the top surface and rubbed firmly, and then the cellophane tape attached to the specimen was quickly pulled out.

상기와 같이 셀로판테잎을 뗀 후 격자모양으로 형성된 수지 코팅층이 떨어져나간 정도를 하기와 같은 등급기준에 의거하여 판정하고 그 결과를 하기 표 1에 나타내었다. After removing the cellophane tape as described above, the degree of separation of the resin coating layer formed in a lattice shape was determined based on the following grading criteria and the results are shown in Table 1 below.

-접착력 등급-Adhesion Class

A : 격자모양의 수지 코팅층 중 떨어져나간 부분이 전혀 없음.A: No part of the lattice-shaped resin coating layer fell off.

B : 격자모양의 수지 코팅층 중 떨어져나간 부분이 5% 미만임.B: The part which fell out of the lattice-shaped resin coating layer is less than 5%.

C : 격자모양의 수지 코팅층 중 떨어져나간 부분이 5 ~ 15%임.C: The part which fell out of the lattice-shaped resin coating layer is 5 to 15%.

D : 격자모양의 수지 코팅층 중 떨어져나간 부분이 15 ~ 35%임.D: The part which fell out of the lattice-shaped resin coating layer is 15 to 35%.

E : 격자모양의 수지 코팅층 중 떨어져나간 부분이 35 ~ 65%임.E: The part which fell out of the lattice-shaped resin coating layer is 35 to 65%.

F : 격자모양의 수지 코팅층 중 떨어져나간 부분이 65%이상임.F: The part which fell out of the lattice-shaped resin coating layer is 65% or more.

실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 실시예 5Example 5 실시예 6Example 6 접착력 등급Adhesion EE CC BB AA AA --

상기 표 1에 나타난 바와 같이, 원료 혼합물에 송진이 전혀 첨가되지 않은 실시예 1의 경우 시험결과 격자 모양으로 나뉜 수지 코팅층의 반 이상이 셀로판테잎에 의해 박리됨을 알 수 있었으며, 그 반면에 송진이 첨가된 실시예 2 내지 실시예 5의 경우에는 셀로판테잎에 의한 박리된 수지 코팅층이 현저하게 적은 것을 확인할 수 있었으며, 이는 원료 혼합물에 송진이 첨가됨에 따라 용기와 수지 코팅층 사이의 접착력이 향상됨을 알 수 있었다.As shown in Table 1, in Example 1 in which no rosin was added to the raw material mixture, it was found that more than half of the resin coating layer divided into lattice shapes was peeled off by the cellophane tape, while rosin was added. In the case of Examples 2 to 5, it was confirmed that the peeled resin coating layer by the cellophane tape was significantly less, which showed that the adhesion between the container and the resin coating layer improved as the rosin was added to the raw material mixture. .

다만, 실시예 2의 경우 첨가된 송진의 양이 너무 적어 수지 코팅층과의 충분한 접착력을 갖지 못하여 그 결과가 조금 미비하게 나타났으며, 실시예 6의 경우 송진이 너무 많이 첨가되어 가압발포 성형중 용출된 송진이 금형에 달라붙게 되어 작업이 용이치 않았고, 금형으로 부터 떼어내는 도중 일부분이 부숴지는 현상이 발생하여 전분용기로서의 제조가 원활치 수행되지 못하였다.However, in Example 2, the amount of rosin added was too small to have sufficient adhesive strength with the resin coating layer, and the result was slightly inferior. In Example 6, too much rosin was added to elute during pressurized foam molding. Since the rosin stuck to the mold was not easy to work, and the part was broken during detachment from the mold, and the production as a starch container was not performed smoothly.

따라서, 상기와 같은 결과를 고려하였을 때, 송진의 첨가량은 원료 혼합물 100g에 4 ~ 16g이 첨가되었을 때 가장 바람직한 효과가 나타나는 것을 확인할 수 있었다. Therefore, when considering the above results, it was confirmed that the addition amount of the rosin is the most desirable effect when 4 to 16g is added to 100g of the raw material mixture.

상술한 바와 같이 본 발명의 무공해 전분용기의 제조방법은 원료 혼합물에 송진을 일정 배합비로 첨가하여 가압발포된 성형물의 표면이 균일성을 갖음과 동시에 송진 코팅층을 형성시킴으로서 생분해성 수지 코팅층과의 접착력을 향상시킴에 따라 외부충격이나 외부환경에 의해 수지 코팅층이 박리되는 것을 방지할 수 있고, 따라서 저장성의 향상과 제품의 품질을 높일 수 있다는 효과를 가져오는 것이다.As described above, in the method of manufacturing the pollution-free starch container of the present invention, rosin is added to the raw material mixture at a predetermined compounding ratio, and the surface of the press-foamed molding has uniformity and forms a rosin coating layer, thereby improving adhesion to the biodegradable resin coating layer. By improving, it is possible to prevent the resin coating layer from being peeled off by an external impact or an external environment, thereby improving the shelf life and improving the product quality.

Claims (5)

삭제delete 전분과 곡물가루, 셀룰로오즈, 발포제 및 송진분말을 포함하는 원료 혼합물을 교반하고 100 ~ 120℃에서 가열하여 호화시킨 후, 상기 호화된 혼합물을 소정의 성형기에 넣어 150 ~ 300℃의 증기를 가하면서 500 ~ 2000㎏/㎤의 압력하에 가압발포 성형한 다음, 상기 성형물의 표면에 생분해성 수지를 도포하고 60 ~ 100℃의 온도에서 가열건조시켜 수지 코팅층을 형성하는 과정을 포함하는 무공해 전분용기의 제조방법에 있어서The raw material mixture containing starch and grain flour, cellulose, foaming agent and rosin powder was stirred and heated at 100-120 ° C. to be gelatinized. Method for producing a pollution-free starch container comprising the step of forming a resin coating layer by applying a pressure-defoaming molding under a pressure of ~ 2000kg / ㎠, apply a biodegradable resin to the surface of the molding and heat-dried at a temperature of 60 ~ 100 ℃ In 상기 원료 혼합물은 전분 50 ~ 80중량부와 곡물가루 10 ~ 30중량부, 셀룰로오즈 5 ~ 15중량부, 발포제 1 ~ 5중량부 및 송진분말 4 ~ 16중량부가 혼합된 것임을 특징으로 하는 무공해 전분용기의 제조방법.The raw material mixture of 50 to 80 parts by weight of starch and 10 to 30 parts by weight of grains, 5 to 15 parts by weight of cellulose, 1 to 5 parts by weight of blowing agent and 4 to 16 parts by weight of rosin powder, characterized in that Manufacturing method. 삭제delete 삭제delete 삭제delete
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US20110024932A1 (en) * 2008-07-21 2011-02-03 Teck Tin Wong Methods of manufacturing formaldehyde-free molded products and related parts
KR100972834B1 (en) * 2008-07-21 2010-07-29 주식회사 이에프 Biodegradable Forming Receptacle
KR20180064948A (en) * 2016-12-06 2018-06-15 박태관 Manufacturing method of disposable vessel using rice and disposable vessel thereby the same that

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