KR101061043B1 - Biodegradable container and its manufacturing method - Google Patents
Biodegradable container and its manufacturing method Download PDFInfo
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- KR101061043B1 KR101061043B1 KR20080109451A KR20080109451A KR101061043B1 KR 101061043 B1 KR101061043 B1 KR 101061043B1 KR 20080109451 A KR20080109451 A KR 20080109451A KR 20080109451 A KR20080109451 A KR 20080109451A KR 101061043 B1 KR101061043 B1 KR 101061043B1
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- South Korea
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- biodegradable
- container
- paper
- sheet
- starch
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/007—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a foam layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
- B32B5/20—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material foamed in situ
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
- B32B2307/7163—Biodegradable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
본 발명은 전분을 포함하는 생분해성 용기의 외면에 보강 시트가 형성된 일회용 생분해성 용기를 제조하도록 함으로써, 용기를 사용 후 폐기 시 자연 상태에서 미생물에 의하여 친환경적으로 쉽게 생분해되도록 한다.The present invention is to prepare a disposable biodegradable container formed with a reinforcing sheet on the outer surface of the biodegradable container containing starch, so that the biodegradable eco-friendly by the microorganism in the natural state when the container is disposed of after use.
본 발명의 생분해성 용기는 전분, 물, 가소제, 보강 충진제, 바인더를 혼련하여 시트 상으로 생분해성 조성물을 형성하는 공정, The biodegradable container of the present invention is a process of kneading starch, water, plasticizer, reinforcing filler, binder to form a biodegradable composition on a sheet,
펄프를 망 형태의 금형에 공급하여 프레스에 의해 용기 형상으로 적층지를 몰드 성형하는 공정,Supplying the pulp to a mold in the form of a net and molding the laminated paper into a container shape by pressing;
상기 적층지를 내·외면으로 하고 중간에 상기한 생분해성 조성물을 공급하여 발포시키는 공정을 거쳐 형성된다.The laminated paper is formed through the step of supplying and foaming the biodegradable composition described above as the inner and outer surfaces.
Description
본 발명은 생분해성 용기 및 그 제조방법에 관련된 것이고, 특히 전분을 포함하는 생분해성 수지의 외면에 펄프로 된 적층지가 형성된 생분해성 용기 및 그 제조방법에 관한 것이다.The present invention relates to a biodegradable container and a method for producing the same, and more particularly, to a biodegradable container in which a laminated paper made of pulp is formed on an outer surface of a biodegradable resin containing starch.
공업의 발전과 함께 소득 수준의 증가 및 생활환경의 변화에 따른 인스턴트 식품의 이용이 많아짐에 따라 일회용 식품 용기의 수요가 급증하고 있다.With the development of the industry, the demand for disposable food containers is increasing rapidly as the use of instant foods increases due to the increase of income level and the change of living environment.
식품 용기로 도기류나 유리제품을 사용하는 경우에는 보관 및 장소 확보가 어려울 뿐 아니라, 높은 파손율, 사용 후 세척의 번거로움, 생산성 저하 및 높은 제조단가로 인하여 인스턴트 식품 및 소량 포장용으로는 거의 사용되지 않고 대부분 일회용 용기를 사용하고 있다. 또한 패스트푸드점, 편의점 및 자동판매기에서는 사용 후 버릴 수 있는 종이, 발포수지 등으로 제조된 일회용 용기의 사용이 증가하고 있는 추세에 있다. When using pottery or glass as a food container, not only is it difficult to store and secure the place, but also it is rarely used for instant food and small-packing because of its high breakage rate, the hassle of post-use cleaning, low productivity and high manufacturing cost. Most of them use disposable containers. In addition, the use of disposable containers made of paper, foamed resin, etc. that can be discarded after use is increasing in fast food stores, convenience stores and vending machines.
이러한 일회용 용기로는 합성수지인 발포성 폴리스티렌을 일정한 두께의 시이트 상의 발포지로 형성한 후, 진공장치가 부착된 적당한 금형 틀에서 압축하고 급속히 내부 공기를 제거하여 제조한 제품이 가장 널리 사용되고 있으며, 이외에 종이에 합성수지인 포리에틸렌, 포리프로필렌을 도포하여 제조한 원지를 이용해서 종이컵 및 종이쟁반 등을 만든다.Such a disposable container is most widely used as a product manufactured by forming a foamed polystyrene, which is a synthetic resin, into a foam sheet on a sheet of a certain thickness, and then compressing it in a suitable mold frame with a vacuum device and rapidly removing internal air. Paper cups and paper trays are made by using a base paper prepared by applying synthetic resin polyethylene and polypropylene.
이러한 일회용 용기류는 여러 가지 우수한 장점으로 인해 사용량이 매년 증가하고 있으나, 사용량의 증가에 따라 환경오염도 가중되고 사용 후에는 각종 쓰레기와 함께 매립되는 경우 쉽게 분해되지 않으며, 소각하는 경우에는 유독가스(다이옥신, 일산화탄소 등)를 대량 발생시켜 환경에 유해할 뿐만 아니라 지구 온난화에 까지 영향을 미치는 것으로 알려져 있다.These disposable containers are increasing year by year due to a number of excellent advantages, but environmental pollution is also increased with the increase of usage, and after use, is not easily decomposed when landfilled with various waste, toxic gas (dioxin, It is known that not only harmful to the environment by generating a large amount of carbon monoxide, etc., but also affects global warming.
이러한 문제점을 해결하고 폐자원의 재활용이라는 측면에서 재생처리 방법에 대한 연구가 활발히 진행 중에 있으나, 분리수거에 대한 어려움과 더불어 수거 후에도 혼입된 불순물 제거 등 많은 문제점이 있었다.In order to solve these problems and recycle waste materials, researches on regeneration treatment methods are being actively conducted. However, there are many problems such as the removal of contaminated impurities even after collection as well as the difficulty of separate collection.
최근 기존의 합성수지와 성질이 유사하면서 자연계의 미생물에 의해 쉽게 분해되는 생분해성 고분자로는 화학합성을 통한 지방족 폴리에스테르, 발효에 의한 폴리히드록시 알카노에이트 및 폴리히드록시 부틸레이트 및 이들과 천연고분자인 셀룰로오스 또는 전분의 복합물 등이 있다. 이중 자연계에 풍부하게 존재하고 가격 또한 저렴한 전분이 함유된 생분해성 고분자에 대한 관심이 고조되고 있으며, 이에 대한 연구도 활발히 진행되고 있다. Biodegradable polymers that are similar in nature to conventional synthetic resins and easily decomposed by natural microorganisms include aliphatic polyesters through chemical synthesis, polyhydroxy alkanoates and polyhydroxy butylates by fermentation, and natural polymers thereof. Phosphorus cellulose or starch composites; There is a growing interest in biodegradable polymers containing starch, which is abundant in nature and inexpensive, and is being actively researched.
전분은 자연계에서 가장 손쉽고 저렴하게 얻을 수 있는 천연 고분자로서 주로 옥수수, 감자, 타피오카, 고구마, 밀, 쌀 등에서 추출되며, 포도당이α-1,4 글루코시드 결합으로 이루어진 아밀로오스와 포도당이 α-1,4 글루코시드 결합 및 α-1,6 글루코시드 결합을 하고 있는 아밀로펙틴으로 구성되어 있고, 일반적으로 아밀로오스가 0~28% 함유되어 있다.Starch is the most easily and inexpensive natural polymer in nature. It is mainly extracted from corn, potato, tapioca, sweet potato, wheat, rice, etc., and glucose is composed of α-1,4 glucoside linkage. It consists of amylopectin which has 4 glucoside bond and (alpha) -1,6 glucoside bond, and generally contains 0-28% of amylose.
전분은 출처 및 품종에 따라 이화학적 특성의 차이가 클 뿐만 아니라, 가공 및 저장하는 동안 여러 성분과 상호작용으로 인하여 물리적 성질이 크게 좌우되기 때문에 사용하고자 하는 용도에 따라 가교, 에테르, 에스테르, 산처리, 산화 및 그라프트시킨 변성전분을 사용하고 있다.Starch has not only a large difference in physicochemical properties according to its source and variety, but also physical properties are greatly influenced by interaction with various components during processing and storage. Therefore, crosslinking, ether, ester, acid treatment , Modified and grafted modified starch is used.
종래의 생분해성 용기의 제조방법들은 발포 폴리스티렌과 유사한 물성을 가지며 제조방법이 간단하지만 천연 고분자 외에 사용하는 첨가제 중 분해되지 않는 원료의 첨가로 인하여 분해에 문제가 제기되고 있고, 가격 또한 고가이므로 실용화에 어려움을 겪고 있는 실정이다. 독일의 바이오텍사에서 감자전분, 타피오카전분을 이용한 제품이 개발되어 실용화 단계에 있으나, 내수성이 떨어지며 기계적 물성 및 제조원가 측면에서도 비경제적일 뿐만 아니라 국내에서 원료 수급 상 어려운 측면도 있었다.Conventional methods for producing biodegradable containers have similar properties to expanded polystyrene and have a simple manufacturing method, but due to the addition of raw materials that do not decompose in the additives used in addition to natural polymers, problems are caused in decomposition, and the price is also high, making them practical. The situation is suffering. German biotech has developed a product using potato starch and tapioca starch, which is in the commercialization stage. However, its water resistance is inferior, it is not economical in terms of mechanical properties and manufacturing costs, and it is also difficult to supply raw materials in Korea.
이러한 문제점을 개선하기 위하여 국가에서는 생분해성 고분자계 사업으로 우리나라를 환경기술을 G-7 국가 수준으로 향상시키고 환경보전의 지속을 위하여 국가적인 연구비를 투입하여 생분해성 고분자 기술을 개발하고 있으며, 또한 생분해도에 대한 측정방법으로도 현재 국제표준의 ISO 14855 방법 또는 이를 국제표준 화한 KS M 3100-1 방법을 적용하고 있고, 초기 45일 동안 생분해도가 표준물질 대비 60% 이상(절대치 42% 이상 분해)이거나, 180일 기간 동안 생분해도 값이 표준물질 대비 90% 이상(절대치 63% 이상 분해)을 규정하고 있다.In order to improve these problems, the country is developing biodegradable polymer technology with biodegradable polymer-based business to improve Korea's environmental technology to the level of G-7 country and invest national research fund for sustaining environmental conservation. As a measure of the degree, the ISO 14855 method of the international standard or the KS M 3100-1 method, which is internationally standardized, is applied, and the biodegradability of the initial 45 days is 60% or more (absolute value 42% or more). Or, the biodegradability value is defined to be 90% or more (absolute value 63% or more) over the standard for 180 days.
분해성 합성수지 재질 기준으로 환경부, 산업자원부가 고시하는 규격기준(환경부고시 제2003-64호)에 의한 규정에서 전분계 플라스틱은 단순히 전분을 기존의 PE, PP, PS등에 섞고 분해가속제를 첨가하여 제조한 합성수지를 일명 생붕괴성 합성수지라고 부르기도 하며, 가격이 저렴하고 당장 실용화가 가능하여 초창기에 검토 대상이었지만, 근본적으로 합성수지가 미세하게 되는 것일 뿐 완전분해가 되지 않고, 이 분야에 대한 생분해성 시험기준이 확실치 않아 선진국에서는 기피하고 있다. 또 폴리에틸렌, 폴리프로필렌으로 피복된 제품은 통상적으로 인체에 무해한 것으로 알려져 있으나, 전자레인지에 사용하는 경우 등 고온에 노출되는 경우에는 환경호르몬이 발생될 우려가 있는 것으로 알려져 있다.Starch-based plastics are manufactured by simply mixing starch with existing PE, PP, PS, etc. and adding decomposition accelerators according to the standards set by the Ministry of Environment and Ministry of Commerce, Industry and Energy. A synthetic resin is also called biodegradable synthetic resin, and it was considered to be in the early stage because of its low price and practical use right now, but it is basically a synthetic resin that is not finely decomposed and is not fully decomposed. The standards are not clear and are avoided in developed countries. In addition, products coated with polyethylene and polypropylene are generally known to be harmless to humans, but environmental hormones are known to be generated when exposed to high temperatures such as when used in a microwave oven.
또한 천연고분자계 플라스틱은 동식물에서 추출되는 천연고분자(전분, 셀룰로오스, 펙틴, 리그닌, 키틴질 등)를 주원료로 제조된 플라스틱이며, 완전 분해되는 장점이 있으나, 물성이 고르지 못하고 강도가 약하다는 단점이 있다.In addition, natural polymer-based plastics are made from natural polymers extracted from animals and plants (starch, cellulose, pectin, lignin, chitin, etc.) as the main raw material, and have the advantage of being completely decomposed, but have the disadvantage of uneven physical properties and weak strength. .
그러나, 생분해성 합성수지는 미생물이나 자외선에 의해서 자연 상태에서 수 주일만에 분해되는 합성수지로 가격이 기존의 합성수지보다 1.6~4배 비싸고 물성이 일부 취약한 면이 있지만, 점차 대량 생산이 가능하고 일반 합성수지와 거의 동일한 물성으로 개발되고 있다.However, biodegradable synthetic resin is a synthetic resin that is decomposed in a few weeks in a natural state by microorganisms or UV rays, and its price is 1.6 to 4 times more expensive than conventional synthetic resins, and some of its physical properties are weak. It is developed with almost the same physical properties.
한 예로 국내 특허 제10-0581036호에는 상기 문제점을 해결하기 위한 "천연고분자를 이용한 생분해성 일회용 용기의 제조방법과 그 조성물"이 개시되어 있다. 상기 종래 기술에 있어서, 생분해성 일회용 용기는 전분 75~85중량%, 가소제 1~15중량%, 보강제 0.5~3중량%, 안정제 0.3~5중량%, 유연제 0.5~5중량%, 유화제 0.5~3중량%, 및 이형제 0.5~10중량%를 포함한다.As an example, Korean Patent No. 10-0581036 discloses a method for preparing a biodegradable disposable container using natural polymer and its composition to solve the above problem. In the prior art, the biodegradable disposable container is 75 to 85% by weight starch, 1 to 15% by weight plasticizer, 0.5 to 3% by weight reinforcing agent, 0.3 to 5% by weight stabilizer, 0.5 to 5% by weight softener, 0.5 to 3 emulsifier Wt%, and 0.5-10 wt% of the release agent.
그러나 이와 같이 다수의 혼합물이 첨가됨으로써 고가의 첨가제에 따른 제조원가의 상승과 함께, 상기한 바와 같이 천연고분자계 플라스틱으로 인하여 물성이 고르지 못하고 강도 및 분해성에 약하다는 단점이 있다.However, as a result of the addition of a plurality of mixtures as well as the increase in the manufacturing cost according to the expensive additives, due to the natural polymer-based plastic as described above, there is a disadvantage in that the physical properties are uneven and weak in strength and degradability.
또한, 종이를 시트 형태로 적층하여 발포 성형할 때 바닥이 깊은 용기의 경우 주름이 생기고 복잡한 형상의 경우에는 종이 적층 형태의 발포에 문제가 있다.In addition, when laminating and foaming the paper in the form of a sheet, a deep bottom container causes wrinkles, and in the case of a complicated shape, there is a problem in foaming the paper laminated form.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 토양 내에서의 분해뿐만 아니라 토양의 외부로 노출된 상태에 있을 때 분해성이 우수한 생분해성 용기 및 그 제조방법을 제공하는데 목적이 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a biodegradable container having excellent degradability when exposed to the outside of the soil as well as decomposition in soil.
본 발명의 또 다른 목적은 기계적 물성, 경제성을 도모하고, 사용 후 폐기 시에 환경 오염물질이 배출되지 않는 생분해성 용기를 제공하데 있다.Still another object of the present invention is to provide a biodegradable container which achieves mechanical properties and economics, and does not discharge environmental pollutants upon disposal after use.
본 발명의 또 다른 목적은 바닥이 깊은 용기나 요철이 있는 복잡한 형태의 제품도 발포상태가 안정된 생분해성 용기를 제공하는데 있다. Still another object of the present invention is to provide a biodegradable container having a stable foam even in a container having a deep bottom or a complicated product having irregularities.
본 발명의 또 다른 목적은 생분해성 용기의 외면에 종이를 적층하여 발포 성형함으로써 강도가 향상되고, 외관이 미려한 생분해성 용기를 제공하는데 있다. Another object of the present invention is to provide a biodegradable container having improved strength and beautiful appearance by laminating and foaming paper on the outer surface of the biodegradable container.
상기 목적 달성을 위하여 본 발명의 생분해성 용기는 전분, 물, 가소제, 보강 충진제, 바인더를 혼련하여 시트 상으로 얻어진 생분해성 조성물의 내·외면에 펄프 재질로 된 적층지를 적층한 후 일체형으로 발포 성형하여 식품용 용기를 제조한다.In order to achieve the above object, the biodegradable container of the present invention is laminated with a pulp material on the inner and outer surfaces of the biodegradable composition obtained by kneading starch, water, plasticizer, reinforcing filler, and binder into a sheet, and then foam-molding integrally. To prepare a container for food.
여기서 전분, 물, 가소제, 보강 충진제, 바인더를 혼련하여 얻어진 생분해성 조성물은 사용 후 단시간에 생분해되는 장점이 있으나 수분을 흡수하기 쉬운 결점이 있기 때문에 이 결점을 보강하기 위하여 적어도 용기의 내 표면에 생분해성 적 층지를 부착함으로서 수분의 흡수를 지연하거나 방지하고 외관을 미려하게 한다.Here, the biodegradable composition obtained by kneading starch, water, plasticizer, reinforcing filler, and binder has the advantage of biodegradation in a short time after use, but has the disadvantage of absorbing moisture, so at least on the inner surface of the container to reinforce this defect. Attaching the lamination delays or prevents the absorption of moisture and enhances the appearance.
또, 본 발명의 생분해성 용기의 전분은 옥수수, 찰옥수수, 감자, 고구마, 쌀 밀, 보리 또는 비지로 이루어진 그룹으로부터 선택되는 적어도 1종 이상으로 이루어지고, 가소제는 글리셀 폴리에틸렌글리콜, 프로필렌글리콜 및 글리셀의 유도체, 설탕, 포도당, 밀봉, 지방산, 불포화모노글리셀 중 선택되는 적어도 1종 이상으로 이루어지고, 보강 충진제는 천연섬유 또는 펄프로 이루어지고, 바인더는 하이드로콜로이드나 전분바인더로 이루어진다.In addition, the starch of the biodegradable container of the present invention is composed of at least one selected from the group consisting of corn, waxy corn, potato, sweet potato, rice wheat, barley or bean curd, and the plasticizer is glycel polyethylene glycol, propylene glycol and It consists of at least one selected from derivatives of glycel, sugar, glucose, sealing, fatty acids and unsaturated monoglycells, the reinforcing filler is made of natural fibers or pulp, and the binder is made of a hydrocolloid or starch binder.
또, 본 발명의 생분해성 용기의 적층재는 펄프를 주원료로 하는 로얄 아이보리지, 트레이싱지, 한지, 백상지 중 단독 또는 2종 이상의 합지로 이루어진다.Moreover, the laminated material of the biodegradable container of this invention consists of a single or 2 or more types of papers among the royal ivory paper, tracing paper, Korean paper, and white paper which use pulp as a main raw material.
또, 본 발명의 생분해성 용기의 제조방법은 본 발명의 생분해성 용기는 전분, 물, 가소제, 보강 충진제, 바인더를 혼련하여 시트 상으로 생분해성 조성물을 형성하는 공정, In addition, the method for producing a biodegradable container of the present invention is a biodegradable container of the present invention is a step of kneading starch, water, plasticizer, reinforcing filler, binder to form a biodegradable composition on the sheet,
펄프를 망 형태의 금형에 공급하여 프레스에 의해 용기 형상으로 적층지를 몰드 성형하는 공정,Supplying the pulp to a mold in the form of a net and molding the laminated paper into a container shape by pressing;
상기 적층지를 내·외면으로 하고 중간에 상기한 생분해성 조성물을 공급하여 발포시키는 공정을 거쳐 형성된다.The laminated paper is formed through the step of supplying and foaming the biodegradable composition described above as the inner and outer surfaces.
본 발명은 자연 상태에서 쉽게 분해되지 않는 합성수지의 일회용 용기를 대체하고, 인체에 무해한 생분해성 일회용 용기를 제공함으로써 소각, 회수, 매립지 오염 등의 환경문제를 해결할 수 있고, 전분계 조성물은 발효균에 의하여 단시간에 발효 퇴비화 되기 때문에 다른 식물이나 음식물 등과 함께 쉽게 퇴비화 처리가 가능하다.The present invention replaces the disposable container of synthetic resin that is not easily decomposed in the natural state, and can solve the environmental problems such as incineration, recovery, landfill contamination by providing a biodegradable disposable container harmless to the human body, the starch-based composition by fermentation bacteria Since it is fermented in a short time, it can be easily composted with other plants or foods.
또, 내·외면에 종이가 형성되어 있기 때문에 용기의 강도가 보강되고 문자나 도형의 인쇄가 용이하고 표면을 매끄럽게 하여 용기의 품질, 강도 및 기능을 향상 시킬 수 있다.In addition, since paper is formed on the inner and outer surfaces, the strength of the container is reinforced, printing of letters and figures is easy, and the surface is smoothed, thereby improving the quality, strength and function of the container.
이하, 본 발명의 생분해성 용기 및 그 제조방법에 대하여 보다 구체적으로 설명한다.Hereinafter, the biodegradable container of the present invention and a manufacturing method thereof will be described in more detail.
본 발명의 전분은 아밀로오스와 아밀로펙틴의 비율을 판단하여 최적의 것을 사용할 수 있다. Starch of the present invention can be used to determine the optimal ratio of amylose and amylopectin.
전분은 아밀로오스 함량이 40중량% 이하의 옥수수, 찰옥수수, 감자, 고구마, 쌀 밀, 보리 및 비지 등을 이용할 수 있으며, 특히 옥수수, 찰옥수수, 감자, 고구마, 쌀 밀, 보리로 이루어진 그룹으로부터 선택되는 2종 이상의 전분을 사용하여도 된다.Starch can be used in corn, waxy corn, potatoes, sweet potatoes, rice wheat, barley, and soybeans with an amylose content of 40% by weight or less, in particular, selected from the group consisting of corn, waxy corn, potatoes, sweet potatoes, rice wheat, and barley You may use 2 or more types of starches which become.
제품의 성형성 또는 혼합물의 유동성을 좋게 하기 위해 가소제를 적정량 사용한다. 상기 가소제로는 글리셀 폴리에틸렌글리콜, 프로필렌글리콜 및 글리셀의 유도체 등 단당류, 설탕 포도당 밀봉 등의 2당류, 지방산, 불포화모노글리셀 등을 사용할 수 있다.An appropriate amount of plasticizer is used to improve the moldability of the product or the flowability of the mixture. As the plasticizer, monosaccharides such as glycel polyethylene glycol, propylene glycol, and glycel derivatives, disaccharides such as sugar glucose sealing, fatty acids, unsaturated monoglycells, and the like can be used.
또, 제품의 강도, 형상 유지 향상, 습도 또는 기름 흡수 저하를 위해 보강 충진제를 사용할 수 있다. 상기 보강 충진제로는 천연섬유 펄프 등을 이용할 수 있다.In addition, reinforcing fillers may be used to improve the strength, shape retention, and humidity or oil absorption of the product. As the reinforcing filler, natural fiber pulp may be used.
또, 필요에 따라 제품의 표면 조도를 좋게 하거나, 습도 또는 기름 흡수를 위해 1종 이상의 바인더를 사용할 수 있다.If necessary, at least one binder may be used to improve the surface roughness of the product or to absorb humidity or oil.
상기 바인더는 아르긴산염 등의 하이드로콜로이드, 일반적인 전분 바인더를 사용할 수 있다.The binder may be a hydrocolloid such as arginate salt or a general starch binder.
이어서, 식품 용기(3)의 내·외 표면을 보강하기 위해 펄프를 주원료로 하는 로얄 아이보리지, 트레이싱지, 한지, 백상지 중 단독 또는 2종 이상의 합지를 도 1에 나타낸 바와 같은 몰드성형된 적층지(1)를 성형하여 도 2에 나타내는 것처럼 전분을 주성분으로 하는 시트 상의 생분해성 조성물(2)의 내·외면에 적층한 후 금형을 이용하여 일체형으로 발포 성형하는 과정을 거쳐 생분해성 성형재로 된 식품용 용기(3)를 제조한다.Subsequently, in order to reinforce the inner and outer surfaces of the
상기에서 적층지(1)의 제조는 망형태의 금형(4)에 펄프를 일정하게 공급한 후 프레스 금형(5)으로 압착하여 몰드 성형하는 것으로 적층지(1)의 두께는 0.05~0.2mm로 하는 것이 바람직하다. 너무 얇으면 적층지의 제조가 어려울 뿐만 아니라 적층효과가 저하되고, 너무 두꺼우면 시트상 생분해성 조성물과의 일체화가 어렵고 요철이 있는 복잡한 형태의 용기를 제작할 때 적층상태가 불량해지는 문제가 발생한다.In the manufacturing of the
(실시예 1)(Example 1)
본 발명의 생분해성 성형재로 이루어진 식품용 용기의 제조방법을 설명한다.The manufacturing method of the food container which consists of a biodegradable molding material of this invention is demonstrated.
전분의 조성물의 혼합비율은 옥수수 전분 35~55중량%, 쌀 전분 3~7중량%, 글리셀 가소제 4~10중량%, 보강 충진제로 천연섬유 1~3중량%, 전분바인더 5~10중량% 및 물 20~44중량%를 혼련하여 시트 상으로 가공한다.The mixing ratio of the starch composition is 35 to 55% by weight of corn starch, 3 to 7% by weight of rice starch, 4 to 10% by weight of glycel plasticizer, 1 to 3% by weight of natural fiber as reinforcing filler, and 5 to 10% by weight of starch binder. And 20 to 44% by weight of water are kneaded and processed into a sheet.
상기 시트 상으로 가공된 생분해성 조성물을 발포하기 전에 제조하고자 하는 용기 형태의 몰드 금형에 시트 상으로 가공된 생분해성 조성물의 보강 및 방수효과를 향상하기 위하여 용기의 내·외면에 분해가 용이한 펄프로 만든 종이나 노루지 등을 적층하고 몰드성형된 적층체(1)를 만들고, 이 적층체(1)를 용기 내면 또는 양면에 적층하여 소정 온도(약 150-300℃)에서 압축 발포 성형함으로써 도 2 구조와 같은 형상의 용기(3)가 형성된다.Easy to disintegrate pulp on the inner and outer surfaces of the container in order to enhance the reinforcement and waterproofing effect of the biodegradable composition processed into a sheet in the mold of the container form to be manufactured before foaming the biodegradable composition processed into the sheet. By laminating a paper or a presser paper made of a mold, and forming a molded molded
생분해성 용기의 제조시 성형 몰드기의 온도, 압력 및 성형시간은 서로 밀접한 관계를 갖기 때문에 주의하여야 한다. 즉 성형기의 내부온도가 낮게 조절된 상태에서는 성형시간이 증가하고, 성형하는 동안 일정압력을 가하지 않으면 발포되지 않으며 압력이 높을 경우는 과도하게 발포되어 성형성이 저하된다.Care should be taken in the manufacture of biodegradable containers as the temperature, pressure and molding time of the molding mold are closely related to each other. That is, the molding time increases in a state where the internal temperature of the molding machine is controlled to be low, and if a constant pressure is not applied during molding, foaming is not performed.
한편, 본 발명의 생분해성 일회용 용기의 양면 또는 어느 한 면에 방수효과를 더 향상시키기 위하여 생분해성 종이 대신에 실리콘계 에멀젼, 폴리비닐아세테이트 등으로 된 생분해성 플라스틱을 이용할 수 있고, 종이와 생분해성 플라스틱을 함께 적층하여 사용할 수도 있다.On the other hand, in order to further improve the waterproofing effect on both sides or one side of the biodegradable disposable container of the present invention, biodegradable plastics made of silicone emulsion, polyvinylacetate, etc. may be used, and paper and biodegradable plastics may be used. It can also be laminated together.
(실시예 2)(Example 2)
본 발명의 생분해성 성형재로 이루어진 식품용 용기의 다른 제조방법을 설명한다. Another manufacturing method of a food container made of the biodegradable molding of the present invention will be described.
전분의 조성물의 혼합비율은 옥수수 전분 45~60중량%, 폴리에틸렌글리콜 가소제 7~15중량%, 보강 충진제로 천연섬유 5~10중량%, 천연 전분바인더 15~20중량% 및 물 30~40중량%를 혼련하여 시트 상으로 가공한다.The mixing ratio of the starch composition is 45 to 60% by weight of corn starch, 7 to 15% by weight of polyethylene glycol plasticizer, 5 to 10% by weight of natural fiber as reinforcing filler, 15 to 20% by weight of natural starch binder and 30 to 40% by weight of water. Is kneaded and processed into a sheet.
상기 시트 상으로 가공된 생분해성 조성물을 발포하기 전에 제조하고자 하는 용기 형태의 몰드 금형에 시트 상으로 가공된 생분해성 조성물의 보강 및 방수효과를 향상하기 위하여, 용기의 내면 또는 양면에 몰드성형된 미세 분쇄한 곡물가루로 만든 식용 종이나 노루지 등의 적층체(1)를 만들고, 이 적층체(1)를 용기 내면 또는 양면에 적층하여 소정 온도(약 150-300℃)에서 압축 발포 성형함으로써 도 2 구조와 같은 형상의 용기(3)가 형성된다. In order to improve the reinforcing and waterproofing effect of the biodegradable composition processed into a sheet in a mold of a container to be prepared before foaming the biodegradable composition processed into the sheet, fine molded on the inner surface or both sides of the container By making a
도 1은 본 발명의 적층지를 몰드 성형하는 한 예를 보인 단면도이고,1 is a cross-sectional view showing an example of molding a laminate of the present invention,
도 2는 본 발명의 생분해성 용기의 한 예를 나타내는 분해단면도이다.2 is an exploded cross-sectional view showing an example of the biodegradable container of the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
1 - 적층지1-laminated paper
2 - 시트 상의 생분해성 조성물2-Biodegradable Composition on Sheet
3 - 용기3-container
4 - 망형태의 금형4-net mold
5 - 프레스 금형5-press mold
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KR20200046620A (en) | 2018-10-25 | 2020-05-07 | (주) 세림비앤지 | Biodegradable paper cup coated with multilayered biodegradable laminating for coffee and beverage |
EP3524537A4 (en) * | 2016-10-06 | 2020-07-22 | Toyo Aluminium Ekco Products Co., Ltd. | Molded pulp container and manufacturing method for molded pulp container |
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KR101634429B1 (en) * | 2014-04-07 | 2016-06-30 | 손영익 | Ceramic ware manufacturing methode using injection molding and Ceramic ware thereof |
KR102040015B1 (en) * | 2019-07-15 | 2019-11-05 | (주)지용패키징 | Biodegradable plastic composition |
KR102094648B1 (en) | 2019-11-11 | 2020-03-30 | 주식회사 그린시스템 | Biodegradable Container Production System |
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