KR20200006796A - Sheet for packing food and manufacturing method thereof - Google Patents
Sheet for packing food and manufacturing method thereof Download PDFInfo
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- KR20200006796A KR20200006796A KR1020180080599A KR20180080599A KR20200006796A KR 20200006796 A KR20200006796 A KR 20200006796A KR 1020180080599 A KR1020180080599 A KR 1020180080599A KR 20180080599 A KR20180080599 A KR 20180080599A KR 20200006796 A KR20200006796 A KR 20200006796A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films 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
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
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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
- B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
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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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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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
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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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
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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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Food Science & Technology (AREA)
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Abstract
Description
본 발명은 식품 포장용 시트 및 그 제조 방법에 관한 것으로, 보다 상세하게는 포장된 과일이나 야채 등 식품의 신선도를 장시간 유지할 수 있고 식품의 상품성이 증진되는 식품 포장용 시트 및 그 제조 방법에 관한 것이다.The present invention relates to a food packaging sheet and a method for manufacturing the same, and more particularly, to a food packaging sheet and a method for manufacturing the same, which can maintain the freshness of food such as packaged fruits and vegetables for a long time, and improves the commerciality of the food.
일반적으로 과일이나 야채 등 식품은 농가에서 수확되어 생산자의 손을 떠나 보관 및 유통되고, 소매 거래를 위하여 포장용지나 포장용기에 일정량씩 포장되어 신선도가 유지된 채 슈퍼마켓 등을 통하여 소비자에게 판매된다. 이와 같이 식품의 보관 및 유통 과정에서 식품을 부패시키지 않고 신선하게 유지하기 위한 기술은 매우 중요하게 취급되고 있다.In general, foods such as fruits and vegetables are harvested from farms and stored and distributed away from the producer's hands, and are sold to consumers through supermarkets while being kept fresh and packaged in a certain amount in packaging paper or containers for retail transactions. As such, the technology for keeping food fresh without corrupting it is very important in the process of storing and distributing food.
이와 관련된 종래기술로 특허문헌 1에는 과일 및 야채를 신선하게 장기간 보관할 수 있는 신선도 유지제로, 과망간산칼륨을 5~10wt% 용액 상태로 압지에 첨착 또는 함침시킨 다음 건조하고 적당한 크기로 재단하여 카드 형태로 제조한 신선도 유지제가 공개되어 있다.In the related art, Patent Document 1 discloses a freshness-retaining agent that can store fruits and vegetables freshly for a long time, impregnated or impregnated potassium permanganate with 5-10 wt% solution, and then dried and cut into a suitable size in the form of a card. Freshness retainers prepared are disclosed.
하지만 상술한 종래기술은 실제 포장용지나 포장용기에 적용되었을 때 식품에 우수한 신선도를 부여하는데 효과가 별로 없었다.However, the above-described prior art has little effect on giving excellent freshness to food when it is applied to an actual packaging paper or a packaging container.
과일이나 야채 등 식품의 신선도는 노화를 촉진시키는 주원인인 에틸렌 가스에 의해 저해되는 것으로 보고되고 있고, 따라서 에틸렌 가스의 생성을 억제하거나 생성된 에틸렌 가스를 제거하면 신선도가 오랫동안 유지될 수 있게 된다.The freshness of foods such as fruits and vegetables is reported to be inhibited by ethylene gas, which is the main cause of aging, and therefore, freshness can be maintained for a long time by suppressing the production of ethylene gas or removing the produced ethylene gas.
본 발명은 상술한 문제를 해결하기 위하여 안출된 것으로, 본 발명의 식품 포장용 시트로 과일이나 야채 등 식품을 포장하면 식품의 물질대사와 생리작용으로 인해 발생한 에틸렌 또는 이산화탄소가 시트 외부로 배출되고, 외부의 신선한 공기는 시트 내부로 유입되며, 따라서 보관 및 유통 과정에서 포장된 과일이나 야채 등 식품이 부패되지 않고 신선도를 장시간 유지할 수 있으며 식품의 상품성이 증진될 수 있는 식품 포장용 시트 및 그 제조 방법의 제공에 그 목적이 있다.The present invention has been made in order to solve the above-described problems, when packaging foods such as fruits or vegetables in the food packaging sheet of the present invention, ethylene or carbon dioxide generated by the metabolism and physiological action of the food is discharged to the outside of the sheet, Fresh air flows into the sheet, and thus, food packaging such as fruits and vegetables, which are packaged during storage and distribution, can be kept fresh for a long time and provide food packaging sheets and methods for producing the same, which can improve the commerciality of the food. Has its purpose.
상기 과제를 해결하기 위하여 본 발명은 합성수지 100 중량부당 제오라이트 분말 15 내지 25 중량부, 세라믹 분말 15 내지 25 중량부를 압출기에 넣어 펠렛으로 가공하고, 가공된 펠렛을 호퍼드라이에서 합성수지와 배합하여 용융시키되 합성수지 100 중량부당 제오라이트 분말과 세라믹 분말의 합량이 1 내지 10 중량부가 되도록 합성수지를 배합한 후, 압출기로 압출시켜 가공된 것을 특징으로 하는 식품 포장용 시트를 제공한다.In order to solve the above problems, the present invention processes 15 to 25 parts by weight of zeolite powder and 15 to 25 parts by weight of ceramic powder into an extruder per 100 parts by weight of synthetic resin, and processes the pellets by mixing them with a synthetic resin in a hopper dry to melt the synthetic resin. It provides a food packaging sheet characterized by blending the synthetic resin so that the total amount of the zeolite powder and the ceramic powder per 100 parts by weight of 1 to 10 parts by weight, and then extruded by an extruder.
또한, 본 발명은 합성수지 100 중량부당 제오라이트 분말 15 내지 25 중량부, 세라믹 분말 15 내지 25 중량부를 계량한 후 압출기에 넣어 펠렛으로 가공하는 펠렛 가공 단계; 펠렛을 호퍼드라이에서 합성수지와 배합하여 용융시키되, 합성수지 100 중량부당 제오라이트 분말과 세라믹 분말의 합량이 1 내지 10 중량부가 되도록 합성수지를 첨가하는 배합 단계; 및 배합된 원료를 압출기에 넣고 시트 형상으로 압출시킨 후, 롤러를 통해 소정 두께의 시트로 성형하는 압출 성형 단계를 포함하는 식품 포장용 시트의 제조 방법을 제공한다.In another aspect, the present invention is a pellet processing step of measuring 15 to 25 parts by weight of zeolite powder, 15 to 25 parts by weight of ceramic powder per 100 parts by weight of synthetic resin, and put into an extruder to process into pellets; Blending the pellets with a synthetic resin in a hopper dry, and adding the synthetic resin to add 1-10 parts by weight of the zeolite powder and the ceramic powder per 100 parts by weight of the synthetic resin; And inserting the blended raw material into an extruder and extruding the sheet into a sheet, and then forming an extruded molding step into a sheet having a predetermined thickness through a roller.
본 발명에 의하면 식품의 물질대사와 생리작용으로 인해 발생한 에틸렌 또는 이산화탄소가 시트 외부로 배출되고, 외부의 신선한 공기는 시트 내부로 유입되며, 따라서 보관 및 유통 과정에서 포장된 과일이나 야채 등 식품이 부패되지 않고 신선도를 장시간 유지할 수 있으며 식품의 상품성이 증진될 수 있는 효과가 있다.According to the present invention, the ethylene or carbon dioxide generated by the metabolism and physiological action of the food is discharged to the outside of the sheet, the outside fresh air is introduced into the sheet, and thus the foods such as fruits and vegetables packed during the storage and distribution process decay. It can maintain the freshness for a long time without the effect of improving the commerciality of food.
도 1은 본 발명의 실시예에 따른 식품 포장용 시트의 제조 방법에 관한 플로우 차트이다.1 is a flowchart illustrating a method of manufacturing a sheet for packaging food according to an embodiment of the present invention.
이하에서, 도면을 참조하여 본 발명에 따른 식품 포장용 시트 및 그 제조 방법을 실시하기 위한 구체적인 내용에 대하여 실시예를 중심으로 상세하게 설명하도록 하겠다.Hereinafter, with reference to the drawings will be described in detail with reference to the embodiments for the food packaging sheet according to the present invention and the specific content for carrying out the manufacturing method thereof.
본 발명에 따른 식품 포장용 시트의 제조 방법은 펠렛 가공 단계(S10), 배합 단계(S20) 및 압출 성형 단계(S30)를 포함하여 이루어진다.The method for producing a food packaging sheet according to the present invention comprises a pellet processing step (S10), a compounding step (S20) and an extrusion molding step (S30).
상기 펠렛 가공 단계(S10)는 합성수지 100 중량부당 제오라이트 분말 15 내지 25 중량부, 세라믹 분말 15 내지 25 중량부를 계량한 후 압출기에 넣어 펠렛으로 가공하는 공정이다.The pellet processing step (S10) is a process of weighing 15 to 25 parts by weight of zeolite powder and 15 to 25 parts by weight of ceramic powder per 100 parts by weight of synthetic resin and then putting the extruder into a pellet.
제오라이트 분말과 세라믹 분말을 파우더 형태로 호퍼드라이에서 합성수지와 배합하여 용융시키는 경우 배합시 분진으로 인한 정확한 계측이 곤란하고, 전체적으로 균일하게 분산시키기 어려우므로 1차로 펠렛으로 가공하는 것이고, 식품 포장용 시트 제조를 위해 상시 준비가 가능하게 된다.When zeolite powder and ceramic powder are mixed and melted with synthetic resin in hopper dry in powder form, accurate measurement due to dust during mixing is difficult, and it is difficult to disperse uniformly as a whole. It is always possible to prepare.
이때, 상기 합성수지는 폴리에틸렌, 폴리프로필렌, 폴리스티렌, 폴리염화비닐, 폴리에틸렌 테레프탈레이트에서 선택된 어느 하나로 이루어질 수 있다.In this case, the synthetic resin may be made of any one selected from polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate.
제오라이트는 결정성 알루미노 규산염의 하나로 비석이라고도 하며, 합성도 가능하지만, 본 발명에서는 천연의 제오라이트 분말을 사용한다. 제오라이트 분말은 다공질 구조로 이루어져 에틸렌과 이산화탄소 가스를 흡착할 수 있는 바, 보다 상세하게는 식품 포장용 시트나 이로 성형된 용기 안쪽에 포장된 식품에서 발생되는 에틸렌이나 이산화탄소 가스가 발생한 즉시 흡착하여 제거할 수 있으며, 이로써 유해가스로 인한 식품의 과분해나 노화를 효과적으로 억제할 수 있다.Zeolite is one of the crystalline aluminosilicates, which is also called zeolite and can be synthesized, but the natural zeolite powder is used in the present invention. Zeolite powder has a porous structure that can adsorb ethylene and carbon dioxide gas. More specifically, zeolite powder can be adsorbed and removed as soon as ethylene or carbon dioxide gas is generated from the food packaging sheet or food packaged inside the molded container. In this way, it is possible to effectively suppress the overdegradation or aging of food caused by harmful gases.
이를 위하여, 제오라이트 분말은 합성수지 100 중량부당 15 내지 25 중량부가 포함되는데, 25 중량부를 초과하면 시트나 용기의 통기성이 증가하면서 시트나 용기 내부의 가스 농도를 식품의 호흡 특성에 맞도록 적절하게 유지할 수 없고, 15 중량부 미만이면 시트나 용기의 통기성이 감소하여 가스의 출입이 원활하게 이루어질 수 없다. 이와 같이 최적의 통기성을 유지하기 위해서는 제오라이트 분말의 입자 크기는 5 내지 15㎛의 범위로 이루어지는 것이 바람직하며, 제오라이트 분말의 입자 크기가 과도하게 작아지는 경우 시트의 통기성이 나빠져 가스의 내외 출입이 원활하지 않을 수 있다.To this end, the zeolite powder contains 15 to 25 parts by weight per 100 parts by weight of the synthetic resin, when exceeding 25 parts by weight can increase the air permeability of the sheet or container while maintaining the gas concentration inside the sheet or container to suit the respiratory characteristics of the food If the amount is less than 15 parts by weight, the air permeability of the sheet or the container is reduced and gas can not be smoothly moved out. In order to maintain optimal air permeability, the particle size of the zeolite powder is preferably in the range of 5 to 15 μm. When the particle size of the zeolite powder is excessively small, the air permeability of the sheet is deteriorated and gas is not smoothly moved in and out. You may not.
세라믹 분말은 세균 증식을 억제하고 불쾌한 냄새를 제거하는 항균 및 탈취 기능을 가지며, 이와 같이 세라믹 분말이 전체적으로 고르게 분포되어 있는 시트나 용기의 경우 내부에 포장된 식품의 세균에 의한 부패를 방지하고, 식품으로부터 발생되는 이취를 제거할 수 있으므로, 식품의 상품성이 증진될 수 있다.Ceramic powder has an antibacterial and deodorizing function that suppresses bacterial growth and removes unpleasant odors.In the case of a sheet or a container in which the ceramic powder is evenly distributed as a whole, the ceramic powder prevents decay due to bacteria of the food packaged inside, and Since the off-flavor from which can be removed can be eliminated, the marketability of food can be improved.
이를 위하여, 세라믹 분말은 합성수지 100 중량부당 15 내지 25 중량부가 포함되는데, 25 중량부를 초과하면 통기성이 저하될 수 있고, 15 중량부 미만이면 항균 및 탈취 성능이 저하될 수 있다. 이와 같이 최적의 통기성과 항균 및 탈취 성능 발휘를 위해 세라믹 분말의 입자 크기는 1 내지 5㎛의 범위로 이루어지는 것이 바람직하다.To this end, the ceramic powder is contained 15 to 25 parts by weight per 100 parts by weight of synthetic resin, if more than 25 parts by weight may be lowered breathability, less than 15 parts by weight may lower the antibacterial and deodorizing performance. As such, the particle size of the ceramic powder is preferably in the range of 1 to 5 μm for optimal breathability and antibacterial and deodorizing performance.
상기 배합 단계(S20)는 펠렛을 호퍼드라이에서 합성수지와 배합하여 용융시키되, 합성수지 100 중량부당 제오라이트 분말과 세라믹 분말의 합량이 1 내지 10 중량부가 되도록 합성수지를 첨가하여 제오라이트 분말과 세라믹 분말이 합성수지와 일체를 이루면서 고루 분포되도록 하는 공정이다.In the blending step (S20), the pellets are blended with the synthetic resin in a hopper dry to melt, and the zeolite powder and the ceramic powder are integrated with the synthetic resin by adding the synthetic resin so that the total amount of the zeolite powder and the ceramic powder is 100 parts by weight of the synthetic resin. It is a process to distribute evenly while forming.
즉, 상기 펠렛 가공 단계(S10)에서 성형된 펠렛을 호퍼드라이에서 합성수지와 배합하여 용융시켜 제오라이트 분말과 세라믹 분말이 전체적으로 균일하게 분산되어 배합되도록 하고, 배합된 원료에 포함된 합성수지 100 중량부당 제오라이트 분말과 세라믹 분말을 합친 합량이 1 내지 10 중량부가 되도록 합성수지를 추가로 첨가하게 된다. 제오라이트 분말과 세라믹 분말이 상술한 수치 범위 내에 포함되어 통기성과 항균 및 탈취 성능이 최적으로 발휘될 수 있다. 그 합량이 너무 증가하면 성형성, 가공성이 저하될 수 있고, 포장이 용이하지 않을 수 있다. 더불어, 배합된 원료에 포함된 합성수지 100 중량부당 제오라이트 분말과 세라믹 분말의 합량이 4 중량부가 되는 것이 더욱 바람직하다.That is, the pellets formed in the pellet processing step (S10) are mixed with a synthetic resin in a hopper dry to melt, so that the zeolite powder and the ceramic powder are uniformly dispersed and blended as a whole, and the zeolite powder per 100 parts by weight of the synthetic resin contained in the blended raw material. And the synthetic resin is further added so that the total amount of the combined ceramic powder with 1 to 10 parts by weight. Zeolite powder and ceramic powder may be included in the above-described numerical range can be optimally breathable and antibacterial and deodorizing performance. If the total amount is excessively increased, moldability and processability may decrease, and packaging may not be easy. In addition, the total amount of the zeolite powder and the ceramic powder per 100 parts by weight of the synthetic resin included in the blended raw material is more preferably 4 parts by weight.
상기 압출 성형 단계(S30)는 상기 배합 단계(S20)에서 배합된 원료를 압출기에 넣고 시트 형상으로 압출시킨 후 롤러를 통해 소정 두께의 시트로 성형하는 공정이다. 시트의 두께는 주문자의 발주를 기준으로 정해진다. 예컨대 100㎛ 이하 두께의 시트로 제조하거나 100㎛를 초과하는 두께의 시트로 제조할 수 있다.The extrusion molding step (S30) is a step of molding the raw material blended in the compounding step (S20) into an extruder and extruded into a sheet shape and then forming a sheet having a predetermined thickness through a roller. The thickness of the sheet is determined based on the order of the orderer. For example, it may be made of a sheet having a thickness of 100 μm or less, or a sheet having a thickness of more than 100 μm.
이때, 압출기의 온도는 190 내지 240℃인 것이 바람직한데, 압출기의 온도가 240℃를 초과하면 압출 과정에서 과다한 산화가 발생되어 물성과 내구성이 저하되고, 압출기의 온도가 190℃ 미만이면 열안정성이 떨어지고 혼련이 잘되지 않아 압출 효율이 떨어지는 문제가 발생할 수 있다. At this time, the temperature of the extruder is preferably 190 to 240 ℃, when the temperature of the extruder exceeds 240 ℃ excessive oxidation occurs during the extrusion process, the physical properties and durability is lowered, and if the temperature of the extruder is less than 190 ℃ thermal stability is Dropping and poor kneading may cause problems of poor extrusion efficiency.
이와 같이 생산된 식품 포장용 시트에 인쇄를 하거나, 이를 성형 및 가공하여 용기로 제조하여 식품을 포장할 수도 있다. The food packaging sheet produced as described above may be printed or molded and processed to manufacture a container to package the food.
발명에 관한 실시예로, 폴리에틸렌테레프탈레이트(PET)와, PET 100 중량부당 10㎛의 크기를 갖는 제오라이트 분말 20 중량부, 3㎛의 크기를 갖는 세라믹 분말 20 중량부를 계량하여 압출기에 넣고 펠렛으로 가공하였다. 가공된 펠렛을 호퍼드라이에 넣고 전체 PET 100 중량부당 제오라이트 분말과 세라믹 분말의 합량이 4 중량부가 되도록 PET를 첨가하여 펠렛을 PET와 배합하여 용융시켰다.In an embodiment of the present invention, polyethylene terephthalate (PET), 20 parts by weight of zeolite powder having a size of 10 μm per 100 parts by weight of PET, and 20 parts by weight of ceramic powder having a size of 3 μm are weighed and processed into pellets. It was. The processed pellets were placed in a hopper dry, and PET was added and melted by mixing the pellets with PET so that the total amount of zeolite powder and ceramic powder per 100 parts by weight of PET was 4 parts by weight.
다음에, 배합된 원료를 압출기에 넣고 220℃의 온도에서 시트 형상으로 압출시킨 후, 롤러를 통해 100㎛ 두께를 갖는 시트로 성형하였다.Next, the blended raw material was placed in an extruder and extruded into a sheet shape at a temperature of 220 ° C., and then formed into a sheet having a thickness of 100 μm through a roller.
그리고, 상기와 같이 성형 제조된 발명예 시트에 바나나를 포장한 후 20℃에서 10일간 방치 후에 그 품질특성을 비교예인 일반시트와 비교하였고, 그 결과는 하기 표 1에 나타내었다. 일반시트는 PET 합성수지로 이루어진 두께 100㎛의 시트를 사용하였다.Then, after packaging the banana prepared in the invention prepared sheet as described above and left for 10 days at 20 ℃ compared the quality characteristics with the general sheet as a comparative example, the results are shown in Table 1 below. As the general sheet, a sheet having a thickness of 100 μm made of a PET synthetic resin was used.
여기서, 신선도는 관능 검사로 측정하였고, 그 측정 기준은 a는 매우 좋음, b는 좋음, c는 보통, d는 나쁨, e는 아주 나쁨 등 5단계로 구분하여 표시하였다. 또한, 색도는 일반시트와 발명예에서 포장된 바나나의 색도의 변화를 관능으로 비교 판단하였고, 경도는 로크웰 경도로 측정하였으며, 수분감소율은 식품 건조전 무게(g) - 식품 건조후 무게(g) / 식품 건조 무게로 환산하였다.Here, the freshness was measured by the sensory test, the measurement criteria are divided into five stages, such as a is very good, b is good, c is normal, d is bad, e is very bad. In addition, the chromaticity was determined by comparing the changes in the chromaticity of the bananas packaged in the general sheet and the invention example, the hardness was measured by Rockwell hardness, the moisture reduction rate is weight before drying food (g)-weight after drying food (g) / Converted to food dry weight.
[표 1] 바나나의 품질 특성 변화[Table 1] Changes in Quality Characteristics of Bananas
상기 표 1을 참고하면, 발명예가 일반시트에 비하여 포장된 식품의 색도 유지 효과가 월등히 우수하여 바나나의 꼭지 부분이 계속 녹색을 유지하였고, 경도, 수분감소율, 부패율, 신선도도 현저히 우수함을 확인할 수 있었다.Referring to Table 1, the invention was significantly superior to the color retention effect of the packaged food compared to the general sheet, the banana's nipple portion was continuously maintained green, hardness, moisture reduction rate, decay rate, freshness was also remarkably excellent. .
결국, 본 발명에 따른 식품 포장용 시트 및 그 제조 방법은 식품의 물질대사와 생리작용으로 인해 발생한 에틸렌 또는 이산화탄소가 시트 외부로 배출되고, 외부의 신선한 공기는 시트 내부로 유입되며, 따라서 보관 및 유통 과정에서 포장된 과일이나 야채 등 식품이 부패되지 않고 신선도를 장시간 유지할 수 있으며 식품의 상품성이 증진될 수 있는 것이다.As a result, the food packaging sheet according to the present invention and the manufacturing method thereof, the ethylene or carbon dioxide generated by the metabolism and physiological action of the food is discharged to the outside of the sheet, the fresh air is introduced into the sheet, and thus the storage and distribution process Fruits and vegetables, such as packed in the food can be maintained without decay for a long time, and the commerciality of the food can be improved.
본 발명에서 상기 실시 형태는 하나의 예시로서 본 발명이 여기에 한정되는 것은 아니다. 본 발명의 특허청구범위에 기재된 기술적 사상과 실질적으로 동일한 구성을 갖고 동일한 작용효과를 이루는 것은 어떠한 것이라도 본 발명의 기술적 범위에 포함된다.In the present invention, the above embodiment is an example, and the present invention is not limited thereto. Anything that has substantially the same configuration and achieves the same effect as the technical idea described in the claims of the present invention is included in the technical scope of the present invention.
Claims (5)
15 to 25 parts by weight of zeolite powder and 15 to 25 parts by weight of ceramic powder per 100 parts by weight of the synthetic resin are put into an extruder and processed into pellets. After mixing the synthetic resin so that the total amount is 1 to 10 parts by weight, it is extruded by an extruder and processed sheet.
펠렛을 호퍼드라이에서 합성수지와 배합하여 용융시키되, 합성수지 100 중량부당 제오라이트 분말과 세라믹 분말의 합량이 1 내지 10 중량부가 되도록 합성수지를 첨가하는 배합 단계; 및
배합된 원료를 압출기에 넣고 시트 형상으로 압출시킨 후, 롤러를 통해 소정 두께의 시트로 성형하는 압출 성형 단계를 포함하는 식품 포장용 시트의 제조 방법.
A pellet processing step of measuring 15 to 25 parts by weight of zeolite powder and 15 to 25 parts by weight of ceramic powder per 100 parts by weight of synthetic resin and then putting the extruder into pellets;
Blending the pellets with a synthetic resin in a hopper dry, and adding the synthetic resin to add 1-10 parts by weight of the zeolite powder and the ceramic powder per 100 parts by weight of the synthetic resin; And
After putting the blended raw material into the extruder and extruded into a sheet shape, a manufacturing method of a food packaging sheet comprising an extrusion molding step of forming into a sheet of a predetermined thickness through a roller.
상기 합성수지는 폴리에틸렌, 폴리프로필렌, 폴리스티렌, 폴리염화비닐, 폴리에틸렌 테레프탈레이트에서 선택된 어느 하나로 이루어진 것을 특징으로 하는 식품 포장용 시트.
The method of claim 2,
The synthetic resin sheet for food packaging, characterized in that made of any one selected from polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate.
상기 펠렛 가공 단계는, 제오라이트 분말의 입자 크기는 5 내지 15㎛이고, 세라믹 분말의 입자 크기는 1 내지 5㎛인 것을 특징으로 하는 식품 포장용 시트의 제조 방법.
The method of claim 2,
The pellet processing step, the particle size of the zeolite powder is 5 to 15㎛, the particle size of the ceramic powder is a manufacturing method of the sheet for food packaging, characterized in that 1 to 5㎛.
상기 압출 성형 단계는 압출기의 온도가 190 내지 240℃인 것을 특징으로 하는 식품 포장용 시트의 제조 방법.
The method of claim 2,
The extrusion molding step is a manufacturing method of the food packaging sheet, characterized in that the temperature of the extruder 190 to 240 ℃.
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