KR20240138675A - Manufacturing methods of packaging products water-repellent/oil-repellent properties and packaging products by same the methods - Google Patents
Manufacturing methods of packaging products water-repellent/oil-repellent properties and packaging products by same the methods Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor characterised by the choice of material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2509/00—Use of inorganic materials not provided for in groups B29K2503/00 - B29K2507/00, as filler
- B29K2509/02—Ceramics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
본 발명의 발수 및 발유 특성을 갖는 식품용 포장용기는 0.2 내지 2.4mm의 두께를 갖는 폴리올레핀 층과 탭밀도 0.04 내지 0.08g/cm3를 갖는 실리카(SiO2) 파우더가 포함된 0.02 내지 0.3mm의 두께를 갖는 폴리올레핀 층으로 구성된 다층구조시트를 사용하여 열성형 공정을 이용하여 제작되며, 상기 폴리올레핀 층은 폴리에틸렌 또는 폴리프로필렌 중에서 선택되는 것을 특징으로 한다.
The food packaging container having water-repellent and oil-repellent properties of the present invention is manufactured using a thermoforming process using a multilayer sheet composed of a polyolefin layer having a thickness of 0.2 to 2.4 mm and a polyolefin layer having a thickness of 0.02 to 0.3 mm containing silica (SiO 2 ) powder having a tap density of 0.04 to 0.08 g/cm 3 , and is characterized in that the polyolefin layer is selected from polyethylene or polypropylene.
Description
본 발명은 식품용 포장용기의 재활용성 개선을 위하여 식품용 포장용기 내부의 잔여 음식물을 손쉽게 세척할 수 있도록 발수 및 발유 특성의 표면층을 갖는 다층구조시트를 이용하여 제조된 식품용 포장용기에 관한 것이다. 좀 더 상세하게는 포장용기 내부에 발수 및 발유 특성을 갖도록 하기 위하여 탭밀도(Tap density) 0.04 내지 0.08g/cm3를 갖는 실리카(SiO2) 파우더가 포함된 표면층을 포함하는 다층구조시트를 제조하며, 이를 이용하여 포장용기를 제조하여 포장용기의 세척 성능을 향상시켜서 포장용기의 재활용성을 개선시키는 것이다. The present invention relates to a food packaging container manufactured using a multilayer sheet having a surface layer having water-repellent and oil-repellent properties so that residual food inside the food packaging container can be easily washed away in order to improve the recyclability of the food packaging container. More specifically, in order to impart water-repellent and oil-repellent properties to the inside of the packaging container, a multilayer sheet including a surface layer containing silica (SiO 2 ) powder having a tap density of 0.04 to 0.08 g/cm 3 is manufactured, and a packaging container is manufactured using the same, thereby improving the washing performance of the packaging container and improving the recyclability of the packaging container.
최근, 1인 가족의 증가, 핵가족 및 맞벌이 가족의 증가, 노령화, 개인의 여가시간 충족 등의 사회적 변화로 인해 식품 포장분야는 빠르게 성장하고 있다. 코로나 19의 장기화 등에 따라 일회용품 및 방역용품 사용의 증가로 인하여 포장재 사용이 급격히 늘고 있으며, 최근 환경문제와 더불어 폐플라스틱 재활용 공정 및 제품, 플라스틱 저감을 위한 서비스 등에 대한 다양한 기술개발이 이루어지고 있다.Recently, the food packaging industry is growing rapidly due to social changes such as the increase in single-person households, nuclear families and dual-income families, aging, and personal leisure time. Due to the prolonged COVID-19, the use of disposable products and quarantine supplies has increased, leading to a rapid increase in the use of packaging materials. In addition, various technologies are being developed for recycling processes and products for waste plastics, and services for reducing plastics, along with recent environmental issues.
하지만 편리하고 광범위하게 사용되고 있는 식품 포장재의 플라스틱 소재는 일반적으로 자연분해가 되지 않기 때문에 그 사용이 늘어나는 것에 비례하여 대량의 폐기물을 발생시킨다. 이로 인하여 토양, 대기, 수질 오염 등 환경이 크게 훼손되는 문제가 발생할 수 있다. 또한 플라스틱 폐기물의 처리를 위하여 소각이나 매립에 따른 환경 호르몬 누출, 맹독성의 다이옥신 검출, 폐기물의 불완전 연소에 의한 대기오염 발생 등과 같은 심각한 환경오염의 원인으로 이어지고 있다.However, the plastic materials used in food packaging, which are convenient and widely used, are generally not biodegradable, so they generate a large amount of waste in proportion to their increased use. This can cause serious environmental damage, such as soil, air, and water pollution. In addition, the disposal of plastic waste leads to serious environmental pollution, such as the leakage of environmental hormones due to incineration or landfill, detection of highly toxic dioxin, and air pollution due to incomplete combustion of waste.
이러한 심각한 환경오염 문제를 해결하기 위해서는 플라스틱 포장용기의 사용량은 줄이고 재활용률을 높일 수 있는 방안을 모색하는 것이 필요하다. 특히 코로나 19의 장기화 등에 따라 플라스틱 일회용품 등의 사용이 급격히 증가 하고, 이에 따라 배달용기로 사용된 플라스틱 용기량도 국민 1인당 연간 플라스틱 사용량의 12% 수준에 이를 정도로 많다. 하지만 가정에서 플라스틱의 재활용을 위하여 플라스틱 포장용기의 분리배출을 하더라도 음식 잔여물이 묻어있는 포장용기, 비닐분리가 불가한 실링용기, 소형 플라스틱 용기(숟가락, 포크, 실링칼 등 포함), 스티커 부착용기 등은 실질적으로 재활용이 불가능한 상태이다.In order to solve this serious environmental pollution problem, it is necessary to find ways to reduce the use of plastic packaging containers and increase the recycling rate. In particular, due to the prolongation of COVID-19, the use of plastic disposable products has increased rapidly, and the amount of plastic containers used as delivery containers has reached 12% of the annual plastic use per person. However, even if plastic packaging containers are separated for recycling at home, packaging containers with food residue, sealed containers that cannot be separated from plastic, small plastic containers (including spoons, forks, and sealed knives), and containers with stickers attached are practically impossible to recycle.
따라서 본 발명에서는 이와 같은 문제점 중 음식 잔여물이 묻어 있는 포장용기 재활용성을 개선시키고자 발수 및 발유의 기능성을 가지고 있는 실리카(SiO2) 파우더를 이용하여 누구나 손쉽고 편리하게 세척할 수 있는 식품용 포장용기를 개발하고자 한다. 이를 통하여 식품용 포장용기가 보다 많이 재활용될 수 있도록 도움을 주고자 한다. Therefore, in order to improve the recyclability of packaging containers with food residues among the above problems, the present invention aims to develop a food packaging container that can be easily and conveniently washed by anyone using silica (SiO 2 ) powder having water-repellent and oil-repellent functions. Through this, the present invention aims to help food packaging containers be recycled more widely.
이에 본 발명에서는 기존 식품용 포장용기의 세척성능 향상을 통한 재활용성을 개선하기 위하여 탭밀도 0.04 내지 0.08g/cm3를 갖는 실리카(SiO2) 파우더가 포함된 표면층을 갖는 다층구조시트를 제조하고 이를 이용한 식품용 포장용기 제조방법을 제공하고자 한다. 특히, 실리카 파우더(Silica Powder)는 부피밀도(Bulk density)가 매우 낮아서 폴리올레핀 수지와 고르게 건조 혼합하기가 매우 어려움으로 이를 해결할 수 있는 제조방법을 제공하고자 한다.Accordingly, the present invention aims to provide a multilayer sheet having a surface layer containing silica (SiO 2 ) powder having a tap density of 0.04 to 0.08 g/cm 3 , in order to improve the recyclability of existing food packaging containers by enhancing their cleaning performance, and to provide a method for manufacturing a food packaging container using the same. In particular, silica powder has a very low bulk density, making it very difficult to evenly dry and mix it with a polyolefin resin, and thus a manufacturing method capable of resolving this problem is aimed to provide.
본 발명의 발수 및 발유 특성을 갖는 식품용 포장용기는 0.2 내지 2.4mm의 두께를 갖는 폴리올레핀 층과 탭밀도 0.04 내지 0.08g/cm3를 갖는 실리카(SiO2) 파우더가 포함된 0.02 내지 0.3mm의 두께를 갖는 폴리올레핀 층으로 구성된 다층구조시트를 사용하여 열성형 공정을 이용하여 제작된 것일 수 있다. 또한 상기 다층구조 시트는 2층, 3층, 4층 또는 5층의 구조로 구성될 수 있으나 단 포장용기 내부에 노출되는 부분은 반드시 실리카 파우더가 포함되어야 한다.The food packaging container having water-repellent and oil-repellent properties of the present invention may be manufactured by using a thermoforming process using a multilayer sheet composed of a polyolefin layer having a thickness of 0.2 to 2.4 mm and a polyolefin layer having a thickness of 0.02 to 0.3 mm containing silica (SiO 2 ) powder having a tap density of 0.04 to 0.08 g/cm 3 . In addition, the multilayer sheet may have a structure of two, three, four, or five layers; however, a portion exposed to the inside of the packaging container must include silica powder.
구체적으로 상기 다층구조시트에 포함되는 포장용기 내부를 구성하는 발수 및 발유특성을 갖는 표면층은 탭밀도 0.04 내지 0.08g/cm3를 갖는 실리카(SiO2) 파우더 2.0 내지 30.0wt%가 포함된 폴리올레핀 수지를 이용하여 제조될 수 있다. 추가적으로 실리카 파우더가 포함된 폴리올레핀 수지에는 0.1 내지 5.0 phr의 하나 이상의 액상의 활제가 더 포함될 수 있으며, 액상의 활제로는 파라핀 오일, 대두유, 액상 실리콘 등이 사용될 수 있다.Specifically, the surface layer having water-repellent and oil-repellent properties constituting the inside of the packaging container included in the multilayer structure sheet can be manufactured using a polyolefin resin containing 2.0 to 30.0 wt% of silica (SiO 2 ) powder having a tap density of 0.04 to 0.08 g/cm 3 . Additionally, the polyolefin resin containing silica powder can further contain 0.1 to 5.0 phr of one or more liquid lubricants, and the liquid lubricants can be paraffin oil, soybean oil, liquid silicone, or the like.
또한, 상기 발수 및 발유 특성을 갖는 표면층에 사용되는 탭밀도 0.04 내지 0.08g/cm3의 실리카 파우더가 포함된 폴리올레핀 수지는 일반적으로 사용되는 트윈 압출기가 아닌 반죽기(kneader)를 사용하여 제작하는 것이 바람직하다. 우선, 폴리올레핀 수지를 반죽기에 투입하고, 투입된 폴리올레핀 수지를 용융시킨 후 투입된 폴리올레핀 수지 중량의 0.5 내지 5.0wt%에 해당하는 실리카 파우더를 0.5 내지 10분 간격으로 투입하여 2.0 내지 30.0wt%의 실리카(SiO2) 파우더가 포함된 폴리올레핀 수지 반죽을 제조하고 이를 싱글 압출기에 투입하여 펠릿으로 제작하여 사용하는 것이 바람직하다. 이 때 폴리올레핀 수지와 실리카 파우더의 원활한 혼합을 위해 액상의 활제인 파라핀 오일, 대두유, 액상 실리콘 등이 사용될 수 있다.In addition, it is preferable that the polyolefin resin containing silica powder having a tap density of 0.04 to 0.08 g/cm 3 used for the surface layer having the water-repellent and oil-repellent properties is produced using a kneader rather than a generally used twin extruder. First, the polyolefin resin is fed into the kneader, the fed polyolefin resin is melted, and then silica powder corresponding to 0.5 to 5.0 wt% of the weight of the fed polyolefin resin is fed at intervals of 0.5 to 10 minutes to produce a polyolefin resin dough containing 2.0 to 30.0 wt% of silica (SiO 2 ) powder, which is then fed into a single extruder to be produced into pellets for use. At this time, a liquid lubricant such as paraffin oil, soybean oil, or liquid silicone may be used to ensure smooth mixing of the polyolefin resin and the silica powder.
본 발명에 따른 폴리올레핀 수지로 제조된 식품용 포장용기는 음식물 등의 이물질이 묻어있는 포장용기의 세척을 보다 용이하게 할 있도록 세척 기능을 향상시킨 것이며, 이를 통하여 식품용 포장용기의 재활용성을 개선할 수 있다. 이와 같은 포장용기의 개발은 기름기 등의 음식 잔여물이 묻어 있는 포장용기의 재활용을 위하여 행해지고 있는 잔여물을 세척하기 위한 공정을 없앨 수 있음으로 포장용기의 재활용에 대한 시간 및 비용을 획기적으로 줄일 수 있는 매우 경제적인 장점 또한 갖는다.The food packaging container manufactured using a polyolefin resin according to the present invention has an improved washing function to facilitate washing of a packaging container contaminated with foreign substances such as food, thereby improving the recyclability of the food packaging container. The development of such a packaging container also has the very economical advantage of drastically reducing the time and cost for recycling of the packaging container by eliminating the process for washing the residues that are currently being performed for recycling of a packaging container contaminated with food residue such as oil.
도 1은 본 발명의 일 측면에 따른 탭밀도 0.06g/cm3의 실리카 파우더가 포함된 용기 내부의 표면층을 가지고 있는 포장용기의 사진이다.
도 2는 본 발명의 일 측면에 따른 탭밀도 0.06g/cm3를 갖는 실리카 파우더를 나타내는 사진이다.
도 3은 본 발명의 일 측면에 따른 폴리프로필렌 수지와 탭밀도 0.06g/cm3를 갖는 실리카 파우더를 이용하여 제조된 펠릿을 나타내는 사진이다.
도 4는 본 발명의 일 측면에 따른 도 3의 펠릿을 이용하여 제조된 다층구조 압출시트를 나타내는 사진이다.
도 5는 본 발명의 일 측면에 따른 도 4의 다층구조시트의 단면도이다.
FIG. 1 is a photograph of a packaging container having a surface layer inside the container containing silica powder having a tap density of 0.06 g/cm 3 according to one aspect of the present invention.
FIG. 2 is a photograph showing silica powder having a tap density of 0.06 g/cm 3 according to one aspect of the present invention.
FIG. 3 is a photograph showing a pellet manufactured using a polypropylene resin and silica powder having a tap density of 0.06 g/cm 3 according to one aspect of the present invention.
FIG. 4 is a photograph showing a multilayer extruded sheet manufactured using the pellet of FIG. 3 according to one aspect of the present invention.
FIG. 5 is a cross-sectional view of the multilayer sheet of FIG. 4 according to one aspect of the present invention.
본 발명을 좀 더 구체적으로 설명하기 전에, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정되어서는 아니 되며, 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서 본 명세서에 기재된 실시 예의 구성은 본 발명의 바람직한 하나의 예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형 예들이 있을 수 있음을 이해하여야 한다.Before explaining the present invention in more detail, it should be noted that the terms or words used in this specification and claims should not be limited to their conventional or dictionary meanings, and should be interpreted as meanings and concepts that conform to the technical idea of the present invention based on the principle that the concepts of terms can be appropriately defined in order to best explain the invention. Therefore, the configuration of the embodiments described in this specification is only one preferred example of the present invention, and does not represent all of the technical idea of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.
이하, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록, 본 발명의 바람직한 실시 예들을 상세히 설명한다. 아울러, 본 발명을 설명함에 있어서, 본 발명의 요지를 불필요하게 흐릴 수 있는 관련된 공지기술에 대한 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail so that a person having ordinary skill in the art to which the present invention pertains can easily practice the present invention. In addition, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention will be omitted.
이하 첨부된 도면을 참조하여 본 발명을 좀 더 구체적으로 설명하기로 한다.The present invention will be described in more detail with reference to the attached drawings.
도 1은 본 발명의 일 측면에 따른 탭밀도 0.06g/cm3의 실리카 파우더가 포함된 용기 내부의 표면층을 가지고 있는 포장용기의 사진이다. 용기 내부의 표면층은 발수 및 발유 특성을 지니고 있어서 손쉬운 세척이 가능하다.Figure 1 is a photograph of a packaging container having a surface layer inside the container containing silica powder having a tap density of 0.06 g/cm 3 according to one aspect of the present invention. The surface layer inside the container has water-repellent and oil-repellent properties, allowing for easy cleaning.
도 2는 본 발명의 일 측면에 따른 탭밀도 0.06g/cm3를 갖는 실리카 파우더를 나타내는 사진이다. 이와 같은 실리카 파우더는 발수 및 발유 특성, 부식방지 특성, 강한 표면 흡착성 등의 특성을 가지고 있으며 환경친화적 소재이기도 하다. 하지만 실리카 파우더는 작은 입자의 크기 및 부피밀도(Bulk density)가 매우 낮아서 고분자 수지와 고르게 건조 혼합하기가 매우 어려움으로 기존의 트윈압출기와 같은 방법으로는 균일한 혼합이 이루어진 펠릿을 제조하기가 매우 어렵다.FIG. 2 is a photograph showing silica powder having a tap density of 0.06 g/cm 3 according to one aspect of the present invention. Such silica powder has properties such as water-repellent and oil-repellent properties, corrosion-resistant properties, and strong surface adsorption, and is also an environmentally friendly material. However, silica powder has a very low particle size and bulk density, making it very difficult to evenly dry-mix with a polymer resin, and thus it is very difficult to manufacture pellets in which even mixing is achieved using a method such as a conventional twin extruder.
도 3은 본 발명의 일 측면에 따른 폴리프로필렌 수지와 탭밀도 0.06g/cm3를 갖는 실리카 파우더를 이용하여 제조된 펠릿을 나타내는 사진이다. 상기 펠릿은 10wt%의 실리카 파우더와 90wt%의 폴리프로필렌 그리고 0.5 phr의 액상 활제로 구성되어 있다. 구체적으로 상기 펠릿을 제조하기 위해서 우선, 반죽기(kneader)에 폴리프로필렌 수지를 투입한 후, 이를 용융시키고 투입된 폴리프로필렌 수지 중량대비 약 2.0wt%에 해당하는 실리카 파우더를 1 내지 2분 간격으로 5회에 걸쳐서 투입하여 10wt%의 실리카 파우더가 포함된 폴리프로필렌 수지 반죽을 만들고, 이를 싱글 압출기를 통하여 제조한다. 상기 펠릿을 이용하면, 시트 압출기를 통하여 도 4에서와 같이 시트를 제조할 수 있으며, 사출성형기를 이용하면 숟가락, 사출용기와 같은 사출품을 제조할 수도 있다.FIG. 3 is a photograph showing a pellet manufactured using a polypropylene resin and silica powder having a tap density of 0.06 g/cm 3 according to one aspect of the present invention. The pellet is composed of 10 wt% of silica powder, 90 wt% of polypropylene, and 0.5 phr of a liquid lubricant. Specifically, in order to manufacture the pellet, first, a polypropylene resin is introduced into a kneader, which is then melted, and silica powder corresponding to about 2.0 wt% of the weight of the introduced polypropylene resin is introduced five times at intervals of 1 to 2 minutes to create a polypropylene resin dough containing 10 wt% of silica powder, which is then manufactured through a single extruder. Using the pellet, a sheet can be manufactured as in FIG. 4 through a sheet extruder, and injection-molded products such as spoons and injection-molded containers can also be manufactured using an injection molding machine.
도 4는 본 발명의 일 측면에 따른 도 3의 펠릿을 이용하여 제조된 다층구조시트 사진이며 도 5는 도 4의 다층구조시트 단면도(10)이다. 도 5에 따르면 제조된 다층구조시트는 2층 구조로 되어 있으며, 0.10mm의 발수 및 발유 표면층(11)과 1.2mm의 폴리프로필렌 수지 층(12)으로 구성되어 있다. 또한 상기 다층구조 압출시트(10)는 압출시트 제조공정에서 발수 및 발유 특성을 더욱 개선하기 위하여 불소가 포함된 발수 발유액을 이용하여 코팅할 수도 있다. 또한 상기 도 4의 다층구조시트를 열성형하여 상기 도 1의 포장용기를 제조할 때도 발수 및 발유 특성을 더욱 개선하기 위하여 연꽃무늬를 모사한 사면체 형태의 패턴이 포함된 포지티브 열성형 금형을 제작하여 적용할 수도 있다. 이때 사면체 형태의 패턴은 높이 50 내지 100um, 패턴과 패턴 사이의 거리 30 내지 100um, 패턴 중심과 패턴 중심 사이의 거리는 50 내지 150um으로 제작한다.FIG. 4 is a photograph of a multilayer sheet manufactured using the pellets of FIG. 3 according to one aspect of the present invention, and FIG. 5 is a cross-sectional view (10) of the multilayer sheet of FIG. 4. According to FIG. 5, the manufactured multilayer sheet has a two-layer structure and is composed of a 0.10 mm water- and oil-repellent surface layer (11) and a 1.2 mm polypropylene resin layer (12). In addition, the multilayer extruded sheet (10) may be coated using a water- and oil-repellent liquid containing fluorine in order to further improve the water- and oil-repellent properties during the extruded sheet manufacturing process. In addition, when manufacturing the packaging container of FIG. 1 by thermoforming the multilayer sheet of FIG. 4, a positive thermoforming mold including a tetrahedral pattern imitating a lotus flower pattern may be manufactured and applied in order to further improve the water- and oil-repellent properties. At this time, the tetrahedral pattern is manufactured with a height of 50 to 100 um, a distance between patterns of 30 to 100 um, and a distance between pattern centers of 50 to 150 um.
[표 1]은 본 발명에 따른 실시예의 결과로서, 도 4의 다층구조시트로 제작된 도1의 포장용기와 발수 및 발유 표면층이 없는 일반 다층구조시트로 제작된 포장용기의 접촉각을 비교한 결과이다. 결과적으로 본 발명에 따른 포장용기의 접촉각이 일반 포장용기에 비해서 더 큼을 확인할 수 있으며, 이는 본 발명에 따른 포장용기의 발수 및 발유특성이 개선됨을 의미한다.[Table 1] is a result of an example according to the present invention, comparing the contact angles of the packaging container of Fig. 1 manufactured with the multilayer sheet of Fig. 4 and the packaging container manufactured with a general multilayer sheet without a water-repellent and oil-repellent surface layer. As a result, it can be confirmed that the contact angle of the packaging container according to the present invention is larger than that of the general packaging container, which means that the water-repellent and oil-repellent characteristics of the packaging container according to the present invention are improved.
이상의 본 발명의 상세한 설명에서는 도면을 참조하여 그에 따른 특별한 실시 예에 대해서만 기술하였다. 하지만 본 발명은 상세한 설명에서 언급되는 특별한 형태로 한정되는 것이 아닌 것으로 이해되어야 하며, 오히려 첨부된 청구범위에 의해 정의되는 본 발명의 기술적 사상과 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.In the detailed description of the present invention above, only specific embodiments have been described with reference to the drawings. However, it should be understood that the present invention is not limited to the specific forms mentioned in the detailed description, but rather should be understood to include all modifications, equivalents, and substitutes within the technical spirit and scope of the present invention defined by the appended claims.
Claims (6)
상기 포장용기를 성형하기 위해서 폴리올레핀 수지를 반죽기에 투입하고, 투입된 폴리올레핀 수지를 용융시킨 후, 반죽기 내에 투입된 폴리올레핀 수지 중량의 0.5 내지 5.0wt%에 해당하는 중량만큼 상기 실리카 파우더를 0.5 내지 10분 간격으로 투입하여 상기 실리카 파우더가 2.0 내지 30.0wt% 만큼 포함된 폴리올레핀 수지 반죽을 제조하며,
상기 폴리올레핀 수지 반죽은 압출기를 통하여 펠릿으로 제조하고, 공압출기를 이용하여 상기 펠릿으로 구성된 0.02 내지 0.3mm의 두께의 한 면 이상의 표면층을 갖는 다층구조시트를 제조하고, 이를 이용하여 열성형으로 제조된 포장용기이며
상기 폴리올레핀은 폴리에틸렌 또는 폴리프로필렌 중에서 선택되는 것을 특징으로 하는 포장용기 성형방법A method for forming a packaging container by using a thermoforming method using a multilayer sheet having a surface layer with a thickness of 0.02 to 0.3 mm containing silica powder having a tap density of 0.04 to 0.08 g/cm 3 .
In order to form the above packaging container, a polyolefin resin is fed into a kneader, the fed polyolefin resin is melted, and then the silica powder is fed at intervals of 0.5 to 10 minutes in an amount corresponding to 0.5 to 5.0 wt% of the weight of the polyolefin resin fed into the kneader, thereby producing a polyolefin resin dough containing 2.0 to 30.0 wt% of the silica powder.
The above polyolefin resin dough is manufactured into pellets through an extruder, and a multilayer sheet having at least one surface layer with a thickness of 0.02 to 0.3 mm made of the pellets is manufactured using a co-extruder, and a packaging container manufactured by thermoforming using the same is provided.
A method for forming a packaging container, characterized in that the polyolefin is selected from polyethylene or polypropylene.
상기 폴리올레핀 수지 반죽은 0.1 내지 5.0phr의 액상의 활제인 파라핀 오일, 대두유, 액상 실리콘 중에서 하나 이상을 더 포함하는 것을 특징으로 하는 포장용기 성형방법In claim 1
A packaging container molding method characterized in that the polyolefin resin dough further contains at least one of paraffin oil, soybean oil, and liquid silicone as liquid active agents in an amount of 0.1 to 5.0 phr.
상기 다층구조시트는 압출시트 제작공정 중 불소가 포함된 발수 발유액을 이용하여 코팅하는 것을 특징으로 하는 포장용기 성형방법In claim 1
The above multilayer structure sheet is characterized by a packaging container forming method in which a water-repellent oil-repellent solution containing fluorine is coated during the extrusion sheet manufacturing process.
상기 다층구조시트는 실리카 파우더가 포함된 표면층을 한 면 이상 가지며, 2층, 3층, 4층 또는 5층의 구조로 제조되는 것을 특징으로 하는 포장용기 성형방법 In claim 1
A method for forming a packaging container, characterized in that the above multilayer structure sheet has at least one surface layer containing silica powder and is manufactured with a structure of two, three, four or five layers.
상기 포장용기는 높이 50 내지 100um, 패턴과 패턴 사이의 거리 30 내지 100um, 패턴 중심과 패턴 중심 사이의 거리는 50 내지 150um으로 제작된 사면체 형태의 패턴을 포함하는 포지티브 열성형 금형으로 제조되는 것을 특징으로 하는 포장용기 성형방법In claim 1
The packaging container is characterized in that the packaging container is manufactured using a positive thermoforming mold including a tetrahedral pattern manufactured with a height of 50 to 100 um, a distance between patterns of 30 to 100 um, and a distance between pattern centers of 50 to 150 um.
상기 폴리올레핀 수지 반죽으로 제작된 펠릿을 이용하여 사출성형기를 통해서 제조되는 것을 특징으로 하는 사출품
In claim 1
An injection molded product characterized by being manufactured through an injection molding machine using pellets made of the above polyolefin resin dough.
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| KR1020230032071A KR102922170B1 (en) | 2023-03-10 | 2023-03-10 | Manufacturing methods of packaging products water-repellent/oil-repellent properties and packaging products by same the methods |
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| KR1020230032071A KR102922170B1 (en) | 2023-03-10 | 2023-03-10 | Manufacturing methods of packaging products water-repellent/oil-repellent properties and packaging products by same the methods |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160116454A (en) * | 2015-03-30 | 2016-10-10 | 백상산업(주) | Packing Case SheetT for Bean Curd and Its Production Method |
| KR20180012315A (en) * | 2015-07-09 | 2018-02-05 | 도요세이칸 그룹 홀딩스 가부시키가이샤 | A container in which an inner surface is formed by an olefin resin layer |
| KR20210061993A (en) * | 2018-09-21 | 2021-05-28 | 도판 인사츠 가부시키가이샤 | Resin composition for liquid-repellent layer formation, and liquid-repellent film, liquid-repellent laminate, packaging material, and container using the same |
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- 2023-03-10 KR KR1020230032071A patent/KR102922170B1/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160116454A (en) * | 2015-03-30 | 2016-10-10 | 백상산업(주) | Packing Case SheetT for Bean Curd and Its Production Method |
| KR20180012315A (en) * | 2015-07-09 | 2018-02-05 | 도요세이칸 그룹 홀딩스 가부시키가이샤 | A container in which an inner surface is formed by an olefin resin layer |
| KR20210061993A (en) * | 2018-09-21 | 2021-05-28 | 도판 인사츠 가부시키가이샤 | Resin composition for liquid-repellent layer formation, and liquid-repellent film, liquid-repellent laminate, packaging material, and container using the same |
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| KR102922170B1 (en) | 2026-02-04 |
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