KR20240039268A - Coated paper for biodegradable starch vessel - Google Patents
Coated paper for biodegradable starch vessel Download PDFInfo
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- KR20240039268A KR20240039268A KR1020220117608A KR20220117608A KR20240039268A KR 20240039268 A KR20240039268 A KR 20240039268A KR 1020220117608 A KR1020220117608 A KR 1020220117608A KR 20220117608 A KR20220117608 A KR 20220117608A KR 20240039268 A KR20240039268 A KR 20240039268A
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- biodegradable
- paper
- layer
- coating
- base
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- 229920002472 Starch Polymers 0.000 title claims abstract description 45
- 235000019698 starch Nutrition 0.000 title claims abstract description 45
- 239000008107 starch Substances 0.000 title claims abstract description 45
- 239000010410 layer Substances 0.000 claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000011247 coating layer Substances 0.000 claims abstract description 27
- 238000010097 foam moulding Methods 0.000 claims abstract description 15
- 239000006260 foam Substances 0.000 claims abstract description 11
- 229920006167 biodegradable resin Polymers 0.000 claims abstract description 8
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 18
- 239000004626 polylactic acid Substances 0.000 claims description 18
- 229920002961 polybutylene succinate Polymers 0.000 claims description 6
- 239000004631 polybutylene succinate Substances 0.000 claims description 6
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 claims description 5
- 229920000903 polyhydroxyalkanoate Polymers 0.000 claims description 4
- -1 Poly Butylene succinate Polymers 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/28—Polyesters
-
- 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
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/14—Linings or internal coatings
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/53—Polyethers; Polyesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Laminated Bodies (AREA)
Abstract
개시되는 생분해성 전분용기용 코팅지는, 생분해성 조성물과 함께 발포 성형기의 금형에 동시에 투입되어 발포 성형되는 반제품 용기의 내면에 코팅면을 형성한다. 개시되는 생분해성 전분용기용 코팅지는, 지류로 형성되는 제 1 원지층; 생분해 수지로 형성되며, 제 1 원지층의 표면에 적층되는 생분해 코팅층; 및 지류로 형성되며, 생분해 코팅층의 표면에 이면이 부착되는 제 2 원지층;을 포함한다.The disclosed coating paper for biodegradable starch containers is simultaneously put into a mold of a foam molding machine along with a biodegradable composition to form a coating surface on the inner surface of a semi-finished container that is foam molded. The disclosed coated paper for biodegradable starch containers includes a first base layer formed as a paper stream; A biodegradable coating layer formed of biodegradable resin and laminated on the surface of the first base layer; and a second base layer formed as a paper stream, the back side of which is attached to the surface of the biodegradable coating layer.
Description
본 발명(Disclosure)은, 전분을 포함하는 생분해성 조성물 발포 성형 시 발포 성형되는 반제품 용기의 내면에 코팅면이 형성되게 하는 생분해성 전분용기용 코팅지에 관한 것이다.The present invention (Disclosure) relates to coated paper for biodegradable starch containers, which forms a coating surface on the inner surface of a semi-finished container that is foam molded during foam molding of a biodegradable composition containing starch.
여기서는, 본 발명에 관한 배경기술이 제공되며, 이들이 반드시 공지기술을 의미하는 것은 아니다(This section provides background information related to the present disclosure which is not necessarily prior art).Here, background information related to the present invention is provided, and this does not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).
최근 합성수지(폴리스티렌 등) 등을 사용하여 제조되는 일회용 용기의 문제점을 개선하고자 감자, 고구마, 옥수수 또는 식물성에서 추출한 전분이 포함된 생분해성 조성물을 이용해 제조되는 일회용 생분해성 전분용기가 다수 알려진바 있다.Recently, in order to improve the problems of disposable containers manufactured using synthetic resins (polystyrene, etc.), a number of disposable biodegradable starch containers manufactured using biodegradable compositions containing starch extracted from potatoes, sweet potatoes, corn, or plants have been known.
이러한 생분해성 전분용기는 생분해가 가능하기 때문에 환경오염의 문제가 없을 뿐만 아니라 가공이 용이하다는 장점이 있다.Since these biodegradable starch containers are biodegradable, they have the advantage of not only eliminating the problem of environmental pollution but also being easy to process.
그러나, 생분해성 전분용기는 생분해성 조성물에 포함된 전분이 수분을 흡수하기 때문에 수용되는 음식물의 수분에 의해 파손 및 손상되는 문제점이 있어 왔으며, 이러한 문제를 개선하고자 생분해성 전분용기의 내면에는 내수성 및 내유성 확보를 위해 코팅면을 형성하고 있는 실정이다.However, biodegradable starch containers have had the problem of being broken or damaged by moisture from the food they contain because the starch contained in the biodegradable composition absorbs moisture. In order to improve this problem, the inside of the biodegradable starch container has water resistance and The coating surface is being formed to ensure oil resistance.
전술한 코팅면은 원지의 일측면에 주로 생분해 PLA가 적층된 코팅지에 의해 형성되는데, 코팅지는 생분해성 전분용기의 제조공정을 단순화하기 위해 생분해성 조성물과 함께 발포 성형기의 금형에 동시에 투입되어 발포 성형되는 반제품 용기의 내면에 일체로 형성된다.The above-described coating surface is formed by a coated paper in which biodegradable PLA is mainly laminated on one side of the base paper. In order to simplify the manufacturing process of the biodegradable starch container, the coated paper is simultaneously put into the mold of the foam molding machine along with the biodegradable composition to form the foam. It is formed integrally with the inner surface of the semi-finished product container.
다시 말해, 생분해성 조성물을 고온으로 가열된 발포 성형기의 고정금형에 형성된 캐비티(cavity)에 일정량 투입하고, 고정금형과 고온으로 가열된 발포 성형기의 가동금형 사이에 코팅지를 투입한 상태 하에서 가동금형을 고정금형의 캐비티 내부로 하강시키면 생분해성 조성물은 발포되면서 반제품 용기로 성형되고 이와 동시에 반제품 용기의 내면에 코팅지가 부착되어 코팅면이 형성된다.In other words, a certain amount of the biodegradable composition is injected into the cavity formed in the fixed mold of the foam molding machine heated to a high temperature, and the movable mold is formed under the condition that the coating paper is injected between the fixed mold and the movable mold of the foam molding machine heated to a high temperature. When lowered into the cavity of the fixed mold, the biodegradable composition is foamed and molded into a semi-finished container. At the same time, the coating paper is attached to the inner surface of the semi-finished container to form a coated surface.
이때, 코팅지는 원지 또는 생분해 PLA가 생분해성 조성물과 대면하도록 금형 내부에 투입된다.At this time, the coating paper is put into the mold so that the base paper or biodegradable PLA faces the biodegradable composition.
그런데, 종래 코팅지의 원지를 생분해성 조성물과 대면하도록 금형 내부에 투입하여 코팅면을 형성하는 경우 생분해 PLA가 고온(대략 150~200℃)의 가동금형에 접촉되어 용융되기 때문에 코팅면이 손상되는 문제점이 있었다.However, when the base paper of conventional coated paper is placed inside the mold to face the biodegradable composition to form the coating surface, the coating surface is damaged because the biodegradable PLA is melted in contact with the movable mold at high temperature (approximately 150-200°C). There was this.
또한, 종래 코팅지의 생분해 PLA를 생분해성 조성물과 대면하도록 금형 내부에 투입하여 코팅면을 형성하는 경우 생분해 PLA가 발포 성형되는 생분해성 조성물에 혼화되지 않는 문제점이 있었으며, 이러한 문제로 인해 코팅면이 발포 성형된 반제품 용기에서 들뜨는 현상이 발생하는 문제점이 있었다.In addition, when the biodegradable PLA of conventional coated paper was placed inside the mold to face the biodegradable composition to form the coating surface, there was a problem in that the biodegradable PLA did not mix with the biodegradable composition to be foamed. Due to this problem, the coating surface was foamed. There was a problem with the phenomenon of lifting occurring in the molded semi-finished product container.
그리고 전술한 문제들로 인해 생분해성 전분용기의 양산화가 어려운 또 다른 문제점이 있었다.In addition, there was another problem that made mass production of biodegradable starch containers difficult due to the above-mentioned problems.
본 발명(Disclosure)은, 생분해성 조성물과 함께 발포 성형기의 금형에 동시에 투입되어 발포 성형되는 반제품 용기의 내면에 코팅면을 형성하는 생분해성 전분용기용 코팅지를 제공하되, 특히 고온의 금형에 의한 코팅면의 손상을 막을 수 있게 하며, 코팅면이 발포 성형된 반제품 용기에서 들뜨지 않게 하는 생분해성 전분용기용 코팅지의 제공을 일 목적으로 한다.The present invention (Disclosure) provides a coating paper for biodegradable starch containers that forms a coating surface on the inner surface of a semi-finished product container that is foam-molded by simultaneously putting it into the mold of a foam molding machine along with a biodegradable composition, especially coating it using a high-temperature mold. The purpose is to provide a coating paper for biodegradable starch containers that prevents damage to the surface and prevents the coated surface from lifting in foam-molded semi-finished containers.
또한, 본 발명이 해결하고자 하는 과제는, 이상에서 언급한 기술적 과제로 제한되지 않으며, 언급되지 않은 또 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 명확하게 이해될 수 있을 것이다.In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. It could be.
여기서는, 본 발명의 전체적인 요약(Summary)이 제공되며, 이것이 본 발명의 외연을 제한하는 것으로 이해되어서는 아니 된다(This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).Here, a general summary of the present invention is provided, and this should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).
상기한 과제의 해결을 위해, 본 발명을 기술하는 여러 관점들 중 어느 일 관점(aspect)에 따르면 생분해성 조성물과 함께 발포 성형기의 금형에 동시에 투입되어 발포 성형되는 반제품 용기의 내면에 코팅면을 형성하는 생분해성 전분용기용 코팅지에 있어서, 생분해성 전분용기용 코팅지는, 지류로 형성되는 제 1 원지층; 생분해 수지로 형성되며, 제 1 원지층의 표면에 적층되는 생분해 코팅층; 및 지류로 형성되며, 생분해 코팅층의 표면에 이면이 부착되는 제 2 원지층;을 포함할 수 있다. In order to solve the above problem, according to one aspect among several aspects describing the present invention, a coating surface is formed on the inner surface of a semi-finished product container that is simultaneously put into a mold of a foam molding machine along with a biodegradable composition to be foam molded. In the coated paper for biodegradable starch containers, the coated paper for biodegradable starch containers includes: a first base layer formed as a paper stream; A biodegradable coating layer formed of biodegradable resin and laminated on the surface of the first base layer; And it may include a second base paper layer, which is formed as a paper stream and whose back side is attached to the surface of the biodegradable coating layer.
본 발명의 일 관점(aspect)에 따른 생분해성 전분용기용 코팅지에서, 제 1 원지층 및 제 2 원지층을 형성하는 지류는 노루지, 로얄 아이보리지, 아이보리지, 트레싱지, 한지, 백상지 중 어느 하나 또는 하나 이상이 합지되어 제공될 수 있다.In the coated paper for biodegradable starch containers according to an aspect of the present invention, the paper forming the first base paper layer and the second base paper layer is any one of roe paper, royal ivory paper, ivory paper, tracing paper, Korean paper, and white paper. Alternatively, one or more may be provided by lamination.
본 발명의 일 관점(aspect)에 따른 생분해성 전분용기용 코팅지에서, 제 1 원지층 및 제 2 원지층의 평량은 각각 20~35g/㎡일 수 있다.In the coated paper for biodegradable starch containers according to an aspect of the present invention, the basis weight of the first base paper layer and the second base paper layer may be 20 to 35 g/m2, respectively.
본 발명의 일 관점(aspect)에 따른 생분해성 전분용기용 코팅지에서, 생분해 수지층을 형성하는 생분해 수지는 PLA(Poly Lactic Acid), PHA(Poly Hydroxy Alkanoate), PBAT(Poly Buthylene co-adipate co-terephthalate), PBS(Poly Butylene succinate)에서 선택된 어느 하나 또는 적어도 둘 이상이 혼합될 수 있다.In the coating paper for biodegradable starch containers according to an aspect of the present invention, the biodegradable resin forming the biodegradable resin layer is PLA (Poly Lactic Acid), PHA (Poly Hydroxy Alkanoate), and PBAT (Poly Buthylene co-adipate co- terephthalate) and PBS (poly butylene succinate), or at least two of them may be mixed.
본 발명의 일 관점(aspect)에 따른 생분해성 전분용기용 코팅지에서, 생분해 코팅층은 4~16㎛의 두께를 가지도록 형성될 수 있다.In the coated paper for biodegradable starch containers according to an aspect of the present invention, the biodegradable coating layer may be formed to have a thickness of 4 to 16 μm.
본 발명에 의하면, 발포 성형되는 반제품 용기의 내면에 코팅면 형성 시 제 2 원지층이 생분해 코팅층을 형성하는 융융된 생분해 PLA와 고온의 가동금형의 접촉을 차단하기 때문에 코팅면의 손상을 미연에 막을 수 있게 하는 효과를 제공할 수 있게 된다.According to the present invention, when forming a coating surface on the inner surface of a semi-finished product container to be foam molded, the second base layer blocks contact between the molten biodegradable PLA forming the biodegradable coating layer and the high-temperature movable mold, thereby preventing damage to the coating surface in advance. It can provide an effect that makes it possible.
본 발명에 의하면, 발포 성형되는 반제품 용기의 내면에 코팅면 형성 시 제 1 원지층이 내부로 반제품 용기로 성형되는 생분해성 조성물이 함침되어 경화되기 때문에 코팅면이 반제품 용기에서 들뜨지 않게 하는 효과를 제공할 수 있게 된다.According to the present invention, when forming a coating surface on the inner surface of a semi-finished product container to be foam molded, the first base layer is impregnated and hardened with the biodegradable composition molded into the semi-finished product container, providing the effect of preventing the coating surface from lifting from the semi-finished product container. You can do it.
그리고 본 발명에 의하면, 전술한 효과들에 의해 생분해성 전분용기의 양산화를 도모할 수 있게 하는 또 다른 효과를 제공할 수 있게 된다. And according to the present invention, it is possible to provide another effect that allows mass production of biodegradable starch containers through the above-described effects.
도 1은 본 발명에 따른 생분해성 전분용기용 코팅지를 개략적으로 나타낸 도면.
도 2는 도 1에 도시된 본 발명에 따른 생분해성 전분용기용 코팅지에 코팅면이 형성된 반제품 용기를 개략적으로 나타낸 도면.1 is a diagram schematically showing the coated paper for biodegradable starch containers according to the present invention.
Figure 2 is a diagram schematically showing a semi-finished container with a coated surface formed on the coated paper for biodegradable starch containers according to the present invention shown in Figure 1.
이하, 본 발명에 따른 생분해성 전분용기용 코팅지를 구현한 실시형태를 도면을 참조하여 자세히 설명한다.Hereinafter, an embodiment implementing the coated paper for biodegradable starch containers according to the present invention will be described in detail with reference to the drawings.
다만, 본 발명의 본질적인(intrinsic) 기술적 사상은 이하에서 설명되는 실시형태에 의해 그 실시 가능 형태가 제한된다고 할 수는 없고, 본 발명의 본질적인(intrinsic) 기술적 사상에 기초하여 통상의 기술자에 의해 이하에서 설명되는 실시형태를 치환 또는 변경의 방법으로 용이하게 제안될 수 있는 범위를 포섭함을 밝힌다. However, the essential technical idea of the present invention cannot be said to be limited to the embodiments described below, and based on the essential technical idea of the present invention, it cannot be said that the possible embodiments are limited by the embodiments described below. It is disclosed that the embodiment described in covers the scope that can be easily proposed by way of replacement or change.
또한, 이하에서 사용되는 용어는 설명의 편의를 위하여 선택한 것이므로, 본 발명의 본질적인(intrinsic) 기술적 사상을 파악하는 데 있어서, 사전적 의미에 제한되지 않고 본 발명의 기술적 사상에 부합되는 의미로 적절히 해석되어야 할 것이다. In addition, the terms used below are selected for convenience of explanation, so in understanding the essential technical idea of the present invention, they are not limited to dictionary meanings and are appropriately interpreted as meanings that correspond to the technical idea of the present invention. It should be.
첨부된 도면 중에서, 도 1은 본 발명에 따른 생분해성 전분용기용 코팅지를 개략적으로 나타낸 도면으로, 본 발명에 따른 생분해성 전분용기용 코팅지(100)는 '발명의 배경이 되는 기술'에 설명한 바와 같이 생분해성 조성물과 함께 발포 성형기의 금형에 동시에 투입되어 발포 성형되는 반제품 용기(V; 도 2 참조)의 내면에 코팅면(C; 도 2 참조)을 형성한다.Among the attached drawings, Figure 1 is a diagram schematically showing the coated paper for biodegradable starch containers according to the present invention. The coated paper 100 for biodegradable starch containers according to the present invention is as described in 'Technology behind the invention'. Likewise, the biodegradable composition is simultaneously put into the mold of the foam molding machine to form a coating surface (C; see Fig. 2) on the inner surface of the semi-finished product container (V; see Fig. 2) that is foam molded.
여기서, 생분해성 조성물을 반제품 용기(V)로 발포 성형하고, 본 발명에 따른 생분해성 전분용기용 코팅지(100)가 발포 성형되는 반제품 용기(V)의 내면에 코팅면(C)을 형성하는 것은 종래와 대동소이(大同小異)하므로, 이에 대한 상세한 설명은 생략한다.Here, the biodegradable composition is foam-molded into a semi-finished container (V), and the coated paper 100 for a biodegradable starch container according to the present invention is foam-molded to form a coating surface (C) on the inner surface of the semi-finished container (V). Since it is very different from the conventional one, a detailed description thereof will be omitted.
한편, 본 발명에 따른 생분해성 전분용기용 코팅지(100)는 제 1 원지층(110), 생분해 코팅층(120) 및 제 2 원지층(130)을 포함하며, 제 1 원지층(110), 생분해 코팅층(120) 및 제 2 원지층(130)이 하부에서 상부 측으로 순차적으로 적층되어 본 발명에 따른 생분해성 전분용기용 코팅지(100)를 형성한다.Meanwhile, the coated paper 100 for a biodegradable starch container according to the present invention includes a first base layer 110, a biodegradable coating layer 120, and a second base paper layer 130, and the first base layer 110 and the biodegradable The coating layer 120 and the second base paper layer 130 are sequentially stacked from the bottom to the top to form the coated paper 100 for a biodegradable starch container according to the present invention.
여기서, 본 발명에 따른 생분해성 전분용기용 코팅지(100)는 발포 성형기의 고정금형과 가동금형 사이로 투입되되, 생분해성 전분용기용 코팅지(100)는 제 1 원지층(110)의 이면이 발포 성형기의 고정금형에 형성된 캐비티(cavity)에 투입된 생분해성 조성물과 대면하도록 발포 성형기의 고정금형과 가동금형 사이로 투입된다.Here, the coated paper 100 for biodegradable starch containers according to the present invention is introduced between the fixed mold and the movable mold of the foam molding machine, and the back side of the first base layer 110 of the coated paper 100 for biodegradable starch containers is placed in the foam molding machine. It is put between the fixed mold and the movable mold of the foam molding machine to face the biodegradable composition put into the cavity formed in the fixed mold.
먼저, 제 1 원지층(110)은 발포 성형되는 반제품 용기(V)에 고착되어 코팅면(C)이 반제품 용기(V)에서 들뜨지 않게 한다.First, the first base layer 110 is fixed to the semi-finished product container (V) being foam molded to prevent the coating surface (C) from lifting from the semi-finished product container (V).
제 1 원지층(110)은 도시된 바와 같이 표면과 이면을 가지는 통상의 시트(sheet) 형태로 제공되며, 반제품 용기(10)와 마찬가지로 생분해가 가능하도록 통상의 지류(紙類)로 형성된다.As shown, the first raw paper layer 110 is provided in the form of a regular sheet having a front and back surface, and, like the semi-finished product container 10, is formed of a regular paper to enable biodegradation.
바람직하게는, 제 1 원지층(110)은 통상의 노루지, 로얄 아이보리지, 아이보리지, 트레싱지, 한지, 백상지 중 어느 하나 또는 하나 이상이 합지(合紙)되어 제공된다.Preferably, the first base paper layer 110 is provided by laminating any one or more of common roe paper, royal ivory paper, ivory paper, tracing paper, Korean paper, and white paper.
더욱 바람직하게는, 제 1 원지층(110)의 평량은 20~35g/㎡, 바람직하게는 25~30g/㎡을 가지도록 제공된다.More preferably, the basis weight of the first raw paper layer 110 is 20 to 35 g/m2, preferably 25 to 30 g/m2.
여기서, 제 1 원지층(110)의 평량이 20g/㎡ 미만이면 생분해성 조성물을 반제품 용기(V)로 발포 성형 시 제 1 원지층(110)은 생분해성 조성물의 수분에 의해 해리(解離)된다.Here, if the basis weight of the first base layer 110 is less than 20 g/㎡, when foam molding the biodegradable composition into a semi-finished product container (V), the first base layer 110 is dissociated by moisture in the biodegradable composition. .
그리고, 제 1 원지층(110)의 평량이 35g/㎡를 초과하면 생분해성 조성물을 반제품 용기(V)로 발포 성형 시 제 1 원지층(110)에는 생분해성 조성물 및 생분해 코팅층(120)을 형성하는 생분해 PLA(Poly Lactic Acid)가 함침되어 경화되지 않는 영역이 발생하게 되는데, 이에 의해 코팅면(C)이 반제품 용기(V) 또는 최종적으로 반제품 용기(V)을 가공해 형성되는 생분해성 전분용기에서 쉽게 박리(剝離)된다.In addition, when the basis weight of the first base layer 110 exceeds 35 g / ㎡, the biodegradable composition and the biodegradable coating layer 120 are formed on the first base layer 110 when foam molding the biodegradable composition into the semi-finished product container (V). The biodegradable PLA (Poly Lactic Acid) is impregnated and an area that is not hardened is created, whereby the coated surface (C) is a semi-finished container (V) or a biodegradable starch container that is ultimately formed by processing the semi-finished container (V). It peels off easily.
생분해 코팅층(120)은 통상의 생분해 PLA로 형성되며, 코팅면(C)이 내수성 및 내유성을 확보할 수 있게 하며 동시에 제조되는 생분해성 전분용기의 강도를 높일 수 있게 한다.The biodegradable coating layer 120 is formed of conventional biodegradable PLA, and allows the coating surface (C) to secure water resistance and oil resistance and at the same time increase the strength of the biodegradable starch container being manufactured.
생분해 코팅층(120)은 제 1 원지층(110)과 마찬가지로 표면과 이면을 가지는 통상의 시트(sheet) 형태로 제공되며, 도시된 바와 같이 제 1 원지층(110)의 표면에 평활하게 적층된다.The biodegradable coating layer 120 is provided in the form of a regular sheet having a front and back surface, similar to the first base layer 110, and is smoothly laminated on the surface of the first base paper layer 110, as shown.
바람직하게는, 생분해 코팅층(120)은 제 1 원지층(110)의 표면에 4~16㎛의 두께를 가지도록 적층 형성된다.Preferably, the biodegradable coating layer 120 is laminated on the surface of the first base layer 110 to have a thickness of 4 to 16 μm.
이때, 생분해 코팅층(120)의 두께가 4㎛ 미만이면 생분해성 조성물을 반제품 용기(V)로 발포 성형 시 생분해 코팅층(120)을 형성하는 용융된 생분해 PLA가 제 2 원지층(130)에 원활하게 함침되지 못해 제 2 원지층(130)가 음식물의 수분 등에 의해 박리(剝離) 및 해리(解離)된다.At this time, if the thickness of the biodegradable coating layer 120 is less than 4㎛, when the biodegradable composition is foam-molded into a semi-finished product container (V), the melted biodegradable PLA forming the biodegradable coating layer 120 is smoothly applied to the second base layer 130. Because it is not impregnated, the second base layer 130 peels and dissociates due to moisture from food, etc.
그리고, 생분해 코팅층(120)의 두께가 16㎛를 초과하면 생분해성 조성물을 반제품 용기(V)로 발포 성형 시 생분해 코팅층(120)을 형성하는 용융된 생분해 PLA가 제 2 원지층(130)의 표면으로 스며나와 가동금형에 붙게되는데, 이에 의해 종래와 같이 코팅면(C)이 손상된다.In addition, when the thickness of the biodegradable coating layer 120 exceeds 16㎛, when the biodegradable composition is foam-molded into a semi-finished product container (V), the melted biodegradable PLA forming the biodegradable coating layer 120 is on the surface of the second base layer 130. It seeps out and sticks to the movable mold, causing damage to the coating surface (C) as before.
여기서, 생분해 코팅층(120)을 제 1 원지층(110)에 적층되게 형성하는 것은 공지의 기술이므로 이에 대한 상세한 설명은 생략한다.Here, since it is a known technique to form the biodegradable coating layer 120 by laminating it on the first base layer 110, a detailed description thereof will be omitted.
그리고 생분해 코팅층(120)을 형성하는 생분해 PLA는 통상의 생분해 수지로 대체될 수 있다. 일례로 생분해 코팅층(120)은 PHA(Poly Hydroxy Alkanoate), PBAT(Poly Buthylene co-adipate co-terephthalate), PBS(Poly Butylene succinate)에서 선택된 어느 하나 또는 적어도 둘 이상이 혼합되어 형성될 수 있다.And biodegradable PLA forming the biodegradable coating layer 120 can be replaced with a regular biodegradable resin. For example, the biodegradable coating layer 120 may be formed by any one selected from Poly Hydroxy Alkanoate (PHA), Poly Buthylene co-adipate co-terephthalate (PBAT), and Poly Butylene succinate (PBS), or a mixture of at least two or more.
제 2 원지층(130)은 반제품 용기(V) 발포 성형 시 생분해 코팅층(120)이 가동금형에 접촉하는 것을 차단시킨다.The second base layer 130 blocks the biodegradable coating layer 120 from contacting the movable mold during foam molding of the semi-finished container (V).
제 2 원지층(130)은 제 1 원지층(110)과 마찬가지로 표면과 이면을 가지는 통상의 시트(sheet) 형태로 제공되며, 도시된 바와 같이 생분해 코팅층(120)의 표면에 이면이 부착된다.Like the first base layer 110, the second base layer 130 is provided in the form of a regular sheet having a front and back side, and the back side is attached to the surface of the biodegradable coating layer 120 as shown.
이러한 제 2 원지층(130)은 제 1 원지층(110)과 마찬가지로 생분해가 가능하도록 통상의 지류(紙類)로 형성된다.Like the first raw paper layer 110, this second raw paper layer 130 is formed of ordinary paper so that it is biodegradable.
다시 말해, 제 2 원지층(130)은 제 1 원지층(110)과 동일한 통상의 노루지, 로얄 아이보리지, 아이보리지, 트레싱지, 한지, 백상지 중 어느 하나 또는 하나 이상이 합지(合紙)되어 제공된다.In other words, the second base layer 130 is made by combining one or more of the same normal roe paper, royal ivory paper, ivory paper, tracing paper, Korean paper, and white paper as the first base paper layer 110. provided.
바람직하게는, 제 2 원지층(130)의 평량은 제 1 원지층(110)과 마찬가지로 20~35g/㎡, 바람직하게는 25~30g/㎡을 가지도록 제공된다.Preferably, the basis weight of the second base paper layer 130 is 20 to 35 g/m 2 , preferably 25 to 30 g/m 2 , like that of the first base paper layer 110 .
여기서, 제 2 원지층(110)의 평량이 20g/㎡ 미만이면 생분해성 조성물을 반제품 용기(V)로 발포 성형 시 생분해 코팅층(120)을 형성하는 융융된 생분해 PLA가 제 2 원지층(130)의 표면으로 스며나와 가동금형에 붙게된다. Here, if the basis weight of the second base layer 110 is less than 20 g/㎡, when the biodegradable composition is foam-molded into a semi-finished product container (V), the melted biodegradable PLA that forms the biodegradable coating layer 120 is formed in the second base layer 130. It seeps out to the surface and sticks to the movable mold.
그리고, 제 2 원지층(130)의 평량이 35g/㎡를 초과하면 생분해성 조성물을 반제품 용기(V)로 발포 성형 시 생분해 코팅층(120)을 형성하는 융융된 생분해 PLA가 제 2 원지층(110)의 표면 아래, 바람직하게는 제 2 원지층(130)의 두께에 85~90%까지 함침되지 못하게 된다.In addition, when the basis weight of the second base layer 130 exceeds 35 g/m2, when the biodegradable composition is foam-molded into a semi-finished container (V), the melted biodegradable PLA that forms the biodegradable coating layer 120 is formed into the second base layer 110. ) below the surface, preferably up to 85 to 90% of the thickness of the second base layer 130.
이와 같이 형성된 본 발명에 따른 생분해성 전분용기용 코팅지(100)는 발포 성형되는 반제품 용기(V)의 내면에 코팅면(C) 형성 시 제 2 원지층(130)이 생분해 코팅층(120)을 형성하는 융융된 생분해 PLA와 고온의 가동금형의 접촉을 차단하기 때문에 코팅면(C)의 손상을 미연에 막을 수 있게 한다.In the coated paper 100 for a biodegradable starch container according to the present invention formed in this way, the second base paper layer 130 forms the biodegradable coating layer 120 when the coating surface (C) is formed on the inner surface of the semi-finished container (V) that is foam molded. Because it blocks contact between the molten biodegradable PLA and the high-temperature movable mold, damage to the coating surface (C) can be prevented in advance.
또한, 본 발명에 따른 생분해성 전분용기용 코팅지(100)는 발포 성형되는 반제품 용기(V)의 내면에 코팅면(C) 형성 시 제 1 원지층(110)이 내부로 반제품 용기(V)로 성형되는 생분해성 조성물이 함침되어 경화되기 때문에 코팅면(C)이 반제품 용기(V)에서 들뜨지 않게 한다.In addition, the coated paper 100 for a biodegradable starch container according to the present invention is such that when the coating surface (C) is formed on the inner surface of the semi-finished product container (V) to be foam molded, the first base layer 110 is inside the semi-finished product container (V). Since the biodegradable composition to be molded is impregnated and hardened, the coating surface (C) is prevented from lifting from the semi-finished container (V).
따라서, 본 발명에 따른 생분해성 전분용기용 코팅지(100)는 생분해성 전분용기의 양산화를 도모할 수 있게 한다.Therefore, the coated paper 100 for biodegradable starch containers according to the present invention enables mass production of biodegradable starch containers.
Claims (5)
상기 생분해성 전분용기용 코팅지는,
지류로 형성되는 제 1 원지층;
생분해 수지로 형성되며, 상기 제 1 원지층의 표면에 적층되는 생분해 코팅층; 및
지류로 형성되며, 상기 생분해 코팅층의 표면에 이면이 부착되는 제 2 원지층;을 포함하는 생분해성 전분용기용 코팅지.
In the coating paper for biodegradable starch containers, which is simultaneously put into the mold of a foam molding machine along with a biodegradable composition to form a coating surface on the inner surface of a semi-finished container that is foam molded,
The coated paper for the biodegradable starch container,
A first source layer formed by tributaries;
A biodegradable coating layer formed of a biodegradable resin and laminated on the surface of the first base layer; and
A coated paper for a biodegradable starch container comprising a second base paper layer formed as a paper stream, the back side of which is attached to the surface of the biodegradable coating layer.
상기 제 1 원지층 및 상기 제 2 원지층을 형성하는 상기 지류는 노루지, 로얄 아이보리지, 아이보리지, 트레싱지, 한지, 백상지 중 어느 하나 또는 하나 이상이 합지되어 제공되는 생분해성 전분용기용 코팅지.
In claim 1,
The paper forming the first base paper layer and the second base paper layer is provided by laminating any one or more of roe paper, royal ivory paper, ivory paper, tracing paper, Korean paper, and white paper. Coated paper for biodegradable starch containers.
상기 제 1 원지층 및 상기 제 2 원지층의 평량은 각각 20~35g/㎡인 생분해성 전분용기용 코팅지.
In claim 1,
Coated paper for biodegradable starch containers, wherein the basis weight of the first base paper layer and the second base paper layer is 20 to 35 g/m2, respectively.
상기 생분해 수지층을 형성하는 상기 생분해 수지는 PLA(Poly Lactic Acid), PHA(Poly Hydroxy Alkanoate), PBAT(Poly Buthylene co-adipate co-terephthalate), PBS(Poly Butylene succinate)에서 선택된 어느 하나 또는 적어도 둘 이상이 혼합된 생분해성 전분용기용 코팅지.
In claim 1,
The biodegradable resin forming the biodegradable resin layer is any one or at least two selected from PLA (Poly Lactic Acid), PHA (Poly Hydroxy Alkanoate), PBAT (Poly Buthylene co-adipate co-terephthalate), and PBS (Poly Butylene succinate). Coated paper for biodegradable starch containers containing a mixture of the above.
상기 생분해 코팅층은 4~16㎛의 두께를 가지도록 형성되는 생분해성 전분용기용 코팅지.
In claim 1,
The biodegradable coating layer is a coated paper for a biodegradable starch container formed to have a thickness of 4 to 16㎛.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220117608A KR20240039268A (en) | 2022-09-19 | 2022-09-19 | Coated paper for biodegradable starch vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220117608A KR20240039268A (en) | 2022-09-19 | 2022-09-19 | Coated paper for biodegradable starch vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20240039268A true KR20240039268A (en) | 2024-03-26 |
Family
ID=90473053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020220117608A KR20240039268A (en) | 2022-09-19 | 2022-09-19 | Coated paper for biodegradable starch vessel |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20240039268A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100276839B1 (en) | 1998-08-14 | 2001-01-15 | 고두모 | Biodegradable disposable container manufacturing method using natural polymer and composition |
| KR100548949B1 (en) | 2004-07-09 | 2006-02-02 | 율촌화학 주식회사 | Biodegradable starch bowl and method to prepare the same |
| KR100574547B1 (en) | 2003-03-21 | 2006-04-27 | 율촌화학 주식회사 | Biodegradable composition having improved water resistance and method for producing same |
| KR101307108B1 (en) | 2011-05-17 | 2013-09-11 | 율촌화학 주식회사 | Composition for starch bowl, starch bowl using the same and method for preparing starch bowl using the same |
-
2022
- 2022-09-19 KR KR1020220117608A patent/KR20240039268A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100276839B1 (en) | 1998-08-14 | 2001-01-15 | 고두모 | Biodegradable disposable container manufacturing method using natural polymer and composition |
| KR100574547B1 (en) | 2003-03-21 | 2006-04-27 | 율촌화학 주식회사 | Biodegradable composition having improved water resistance and method for producing same |
| KR100548949B1 (en) | 2004-07-09 | 2006-02-02 | 율촌화학 주식회사 | Biodegradable starch bowl and method to prepare the same |
| KR101307108B1 (en) | 2011-05-17 | 2013-09-11 | 율촌화학 주식회사 | Composition for starch bowl, starch bowl using the same and method for preparing starch bowl using the same |
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