KR20220147549A - Biodegradable packaging with enhanced durability - Google Patents
Biodegradable packaging with enhanced durability Download PDFInfo
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- KR20220147549A KR20220147549A KR1020220133221A KR20220133221A KR20220147549A KR 20220147549 A KR20220147549 A KR 20220147549A KR 1020220133221 A KR1020220133221 A KR 1020220133221A KR 20220133221 A KR20220133221 A KR 20220133221A KR 20220147549 A KR20220147549 A KR 20220147549A
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- South Korea
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- 238000004806 packaging method and process Methods 0.000 title claims description 19
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0033—Additives activating the degradation of the macromolecular compound
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/50—Proteins
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/52—Cellulose; Derivatives thereof
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/54—Starch
-
- 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
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2250/00—Food ingredients
- A23V2250/20—Natural extracts
- A23V2250/21—Plant extracts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pest Control & Pesticides (AREA)
- Laminated Bodies (AREA)
Abstract
Description
본 발명은 내구성이 강화된 생분해성 포장재에 관한 것으로서, 재생종이 등에 방수 및 항균활성이 있는 코팅층을 형성한 포장재에 있어서, 별도의 접착제 없이도 견고한 코팅층을 형성하는 것을 특징으로 한다.The present invention relates to a biodegradable packaging material with enhanced durability.
포장재는 내부에 탑재되는 물품을 일시적으로 보관하기 위해 사용되는 일체를 의미하는 것으로 사용되며, 특히 식품의 포장에 주로 사용된다. 식품 포장재의 간단한 예시로서, 일상에서 흔히 발견할 수 있는 플라스틱 백, 스티로폼 패키지, 종이 포장지 등을 고려할 수 있다. 식품 포장재는 배달음식 등을 보관하기 위하여 사용될 수 있으며, 사용 및 폐기가 용이하다는 장점을 가진다. The packaging material is used to mean an object used to temporarily store the items mounted therein, and is mainly used for packaging food. As a simple example of a food packaging material, a plastic bag, a Styrofoam package, a paper wrapper, etc. that are commonly found in everyday life may be considered. The food packaging material can be used to store delivered food, etc., and has the advantage of being easy to use and dispose of.
과일, 채소, 빵, 과자, 치킨, 아이스크림 등 물기 또는 기름기가 많은 음식이나 식품을 포장하는 음식 포장지는 포장지에 물기나 기름기가 배어 포장지가 찢어져 식품이 오염되는 문제가 많이 발생되고 있다. 특히, 과일이나 채소 등의 신선식품을 내부에 보관하는 신선식품용 포장재의경우에는 식품과 대기의 온도차에서 발생하는 물방울, 식품 자체로부터 나오는 수분 등에 의해 식품의 신선도가 저해되거나 짓무르는 등 그 식품 자체에도 좋지 않은 영향을 끼칠 뿐 아니라 종이 포장재의 경우에는 포장재가 젖어 내구도가 하락하는 등의 문제가 발생하였다.Food packaging that packs food or food with a lot of moisture or oil, such as fruits, vegetables, bread, sweets, chicken, ice cream, etc., has a lot of problems in that the packaging is torn due to moisture or oil, and the food is contaminated. In particular, in the case of packaging materials for fresh foods that store fresh foods such as fruits and vegetables inside, the freshness of the food is inhibited or crushed by water droplets generated from the temperature difference between the food and the atmosphere, moisture from the food itself, etc. Not only does it adversely affect itself, but in the case of paper packaging materials, problems such as deterioration of durability due to wet packaging materials occurred.
이런 문제를 보완하고자 방습성, 내수성, 방유성 등의 물성을 구비한 포장지가 개발되고 있으며, 보통 플라스틱을 이용한 포장재가 두루 쓰이고 있으나, 플라스틱을 포함한 식품 포장재 중 일부는 폐기 과정에서 환경호르몬이 발생하거나, 단순 매립 시 토양오염의 원인이 되기도 한다. To compensate for this problem, packaging paper with physical properties such as moisture-proof, water-resistance, and oil-resistance is being developed, and plastic packaging materials are generally used. Simple landfilling can also cause soil contamination.
플라스틱은 안정하고 비중이 적기 때문에 우리 주변에서 광범위하게 사용되는 재료이다. 안정한 재료인 플라스틱은 자연환경에 배출 시 변화되지 않고 축적된다. 또한 비중이 적어 동일한 중량의 폐기물보다 용적점유율이 높고 처리장 확보의 문제가 지속적으로 대두되고 있다. Plastic is a material widely used around us because it is stable and has a low specific gravity. Plastic, which is a stable material, accumulates unchanged when discharged into the natural environment. In addition, due to its low specific gravity, the volume share is higher than that of waste of the same weight, and the problem of securing a treatment plant is constantly emerging.
최근 지구온난화에 따른 온실효과로 지구 대기의 평균온도가 상승하고 이상 기후 발생 등 환경문제가 지속적으로 전세계적으로 이슈가 되고 있다. 국내에서도 전국민의 건강과 직결되는 황사, 미세먼지, 대기오염 등의 환경문제가 해결해야할 큰 사회문제로 대두되고 있으며 지속가능(sustainable)한 주제로 관심을 끌고 있다.Recently, the average temperature of the earth's atmosphere is rising due to the greenhouse effect caused by global warming, and environmental problems such as abnormal climate are continuously becoming an issue around the world. In Korea, environmental problems such as yellow dust, fine dust, and air pollution, which are directly related to the health of the whole nation, are emerging as major social problems to be solved, and are attracting attention as a sustainable topic.
이렇듯 환경오염에 대한 관심이 증대되면서, 흔히 사용되는 포장재를 환경 친화적인 방향으로 수정하기 위한 노력이 계속되고 있다.As interest in environmental pollution increases, efforts to modify commonly used packaging materials in an environmentally friendly direction are continuing.
본 발명은 상술한 기술적 과제를 해결하기 위하여 개발된 것으로서 친환경 생분해성 포장용기를 제공하는 것을 목적으로 한다.An object of the present invention is to provide an eco-friendly biodegradable packaging container that was developed to solve the above-described technical problem.
또한, 본 발명은 종이 포장재의 표면에 처리하여 방수 및 항균 효과를 나타내는 코팅조성물 및 이를 처리한 친환경 생분해성 포장용기를 제공하는 것을 목적으로 한다.In addition, an object of the present invention is to provide a coating composition exhibiting waterproof and antibacterial effects by treating the surface of the paper packaging material, and an eco-friendly biodegradable packaging container treated therewith.
본 발명은 친환경 생분해성 포장용기에 관한 것으로서, 상기 친환경 생분해성 포장용기는 재생 종이의 표면에 방수 및 항균 활성이 있는 코팅층을 형성하여 내부에 탑재되는 식품을 비롯한 각종 물품, 특히 신선식품의 보관기간 및 보관 편의성이 개선된 것이다.The present invention relates to an eco-friendly biodegradable packaging container, wherein the eco-friendly biodegradable packaging container forms a coating layer with waterproof and antibacterial activity on the surface of the recycled paper, and various articles including food, especially fresh food, are stored therein. and improved storage convenience.
본 발명에서 상기 코팅층은 셀룰로오스, 녹말, 단백질로 이루어진 군에서 선택된 하나 이상을 포함하여 제조된 것일 수 있다.In the present invention, the coating layer may be prepared by including one or more selected from the group consisting of cellulose, starch, and protein.
*상기 코팅재는 인체에 전혀 무해한 성분으로 구성되어 있으며, 자연적으로 분해되어 환경에 미치는 영향이 적은 것을 특징으로 할 수 있다.*The coating material is composed of ingredients that are completely harmless to the human body, and can be characterized in that it is naturally decomposed and has little impact on the environment.
아울러, 상기 코팅재를 구성하는 셀룰로오스 또는 녹말은 그 원료에 있어서 특별한 제한이 없으며, 통상의 기술자는 본 발명의 기술적 사상을 훼손하지 않는 범위에서 종래의 기술을 참조할 수 있다. 가령, 상기 녹말은 옥수수 등으로부터 유래된 녹말일 수 있다. In addition, the cellulose or starch constituting the coating material is not particularly limited in its raw materials, and those skilled in the art may refer to the prior art within the range that does not impair the technical spirit of the present invention. For example, the starch may be starch derived from corn or the like.
동일한 맥락에서, 상기 단백질은 한 종류 이상의 아미노산을 포함하는 것으로서, 본 발명의 기술적 사상을 훼손하지 않는 범위에서 통상의 기술자는 자유로이 종래의 기술을 변형 또는 적용할 수 있으나, 바람직한 단백질의 예시로서, 젤라틴의 사용을 고려할 수 있다. In the same context, the protein includes one or more kinds of amino acids, and those skilled in the art can freely modify or apply conventional techniques within the scope of not impairing the technical spirit of the present invention, but as an example of a preferred protein, gelatin may consider the use of
본 발명에서, 상기 코팅층은 항균활성이 있는 천연물 유래 추출물 및 젤라틴을 포함하여 제조된 것일 수 있다.In the present invention, the coating layer may be prepared including a natural product-derived extract and gelatin having antibacterial activity.
구체적으로, 젤라틴은 가수분해반응을 통하여, 콜라겐으로부터 얻어질 수 있다. 가수분해제로서 산이 사용된 경우에는 산-처리 젤라틴으로 칭해지고, 염기가 사용된 경우에는 염기-처리 젤라틴으로 칭해진다. 한편, 산 및 염기를 사용하여 얻어진 젤라틴을 양성-처리 젤라틴으로 칭하기도 한다. 더하여, 젤라틴의 아미노기에 추가적인 유기화학반응이 진행된 경우에는, 화학-처리 젤라틴이라 칭한다. 본 발명의 코팅재에는 산-처리 젤라틴 또는 염기-처리 젤라틴이 사용되는 것이 바람직하다.Specifically, gelatin can be obtained from collagen through a hydrolysis reaction. When an acid is used as the hydrolyzing agent, it is called acid-treated gelatin, and when a base is used, it is called base-treated gelatin. On the other hand, gelatin obtained using acids and bases is also referred to as positive-treated gelatin. In addition, when an additional organic chemical reaction proceeds to the amino group of gelatin, it is referred to as chemically-treated gelatin. Acid-treated gelatin or base-treated gelatin is preferably used in the coating material of the present invention.
본 발명의 코팅층은 그 자체로서 항균 활성을 가질 수 있도록 천연물 유래의 항균 물질을 포함하여 제조하였으며, 식품의 포장재로 사용할 수 있도록 상기 항균 물질을 천연물에서 유래한 것만으로 구성하여 인체에 유해할 수 있는 합성 화학물질을 배제한 것을 특징으로 한다. The coating layer of the present invention was prepared by including an antibacterial material derived from a natural product so as to have antibacterial activity by itself, and can be harmful to the human body by composing the antibacterial material only from a natural product so that it can be used as a packaging material for food. It is characterized by excluding synthetic chemicals.
구체적으로, 상기 항균 물질은 생강(Zingiber officinale), 타임(Thymus vulgaris), 강리(gracilaria verrucosa), 세이지(Salvia officinalis), 황백(Phellodendron amurense) 및 계피(Cinnamomum Schaeff) 로 이루어진 군에서 하나 이상 선택된 천연물의 추출물을 포함할 수 있다. 본 발명에서는 생강, 타임, 강리, 세이지, 황백 및 계피를 각각 1:1:1:1:3:1의 중량비로 혼합한 후 90℃에서 80%에탄올을 이용하여 4시간동안 환류 추출한 후 감압농축하여 추출물을 제조한 것을 사용하였다. 상기 각 천연물은 상기한 비율을 준수할 때에 가장 효과가 우수하였으며, 각 천연물의 비율을 달리하거나 하나 이상의 추출물을 배제하고 추출물을 제조한 경우에는 항균 활성이 저해될 뿐 아니라, 신선식품의 짓무름을 막을 수 있는 능력이 저하되는 것을 확인하였다.Specifically, the antibacterial material is ginger ( Zingiber officinale ), thyme ( Thymus vulgaris ), ginseng ( gracilaria verrucosa ), sage ( Salvia officinalis ), yellow white ( Phellodendron amurense ) and cinnamon ( Cinnamomum Schaeff ) at least one natural product selected from the group consisting of may contain an extract of In the present invention, ginger, thyme, brine, sage, yellow white and cinnamon were mixed in a weight ratio of 1:1:1:1:3:1, respectively, and extracted under reflux for 4 hours at 90°C using 80% ethanol and then concentrated under reduced pressure. Thus, an extract prepared was used. Each of the above natural products was most effective when the above ratio was complied with, and when extracts were prepared with different ratios of each natural product or by excluding one or more extracts, not only the antibacterial activity was inhibited, but also it was possible to prevent erosion of fresh food. It was confirmed that the ability to
한편, 상기 코팅층에 충분한 강도를 부여하기 위하여 인산계 화합물의 첨가를 고려할 수 있다. 인산계 화합물이 첨가될 경우, 젤라틴 분자 사이의 가교반응이 촉진되며, 그 결과 코팅층의 가수분해에 소요되는 시간이 상대적으로 지연된다. 또한, 상술한 바와 같은 가교반응의 촉진은 코팅층의 조밀함을 증가시켜, 코팅층의 방수성 및 내구성을 증가시킬 수 있다. 한편, 젤라틴 분자 사이의 가교반응 증가는, 코팅층의 기계적 물성(가령, 외력에 대한 저항성)이 개선되는 원인이기도 하다. On the other hand, in order to provide sufficient strength to the coating layer, the addition of a phosphoric acid-based compound may be considered. When the phosphoric acid-based compound is added, the crosslinking reaction between the gelatin molecules is accelerated, and as a result, the time required for hydrolysis of the coating layer is relatively delayed. In addition, the acceleration of the crosslinking reaction as described above may increase the density of the coating layer, thereby increasing the waterproofness and durability of the coating layer. On the other hand, the increase in the crosslinking reaction between the gelatin molecules is also the cause of the improvement of the mechanical properties (eg, resistance to external force) of the coating layer.
세부적으로, 본 발명의 코팅층에 사용되는 인산계 화합물은 지방족 당알코올 모이어티(moiety)를 포함할 수 있다. 지방족 당알코올 모이어티를 포함함으로써, 젤라틴 분자 사이의 가교반응이 촉진되는 효과를 향유할 수 있게 된다. 상기 당알코올 모이어티의 바람직한 예시로서, 에리스티톨, 아라비톨, 리비톨, 자일리톨, 마니톨, 소르비톨, 갈락티톨, 푸치톨, 이노시톨로 이루어진 군에서 선택된 하나 이상의 당알코올 모이어티를 고려할 수 있으며, 경성을 더욱 부여할 수 있다는 관점에서 이노시톨 모이어티를 포함하는 것이 더욱 바람직하며, 비교적 연성을 부여할 수 있다는 관점에서는 소르비톨 모이어티를 포함하는 것이 더욱 바람직하다. In detail, the phosphoric acid-based compound used in the coating layer of the present invention may include an aliphatic sugar alcohol moiety. By including the aliphatic sugar alcohol moiety, it is possible to enjoy the effect of promoting the crosslinking reaction between the gelatin molecules. As a preferred example of the sugar alcohol moiety, one or more sugar alcohol moieties selected from the group consisting of erythitol, arabitol, ribitol, xylitol, mannitol, sorbitol, galactitol, putitol, and inositol may be considered, It is more preferable to include an inositol moiety from the viewpoint of further imparting hardness, and more preferably including a sorbitol moiety from the viewpoint of imparting relatively softness.
본 발명에서는 이노시톨 모이어티:소르비톨 모이어티가 2:3의 중량비로 혼합된 것을 사용하였다. 이때, 포장재가 보관 및 유통되는 과정에서 발생할 수 있는 내외부의 자극에도 파괴되지 않을 정도의 충분한 내구성을 확보할 수 있으며, 동시에 상대적으로 유연한 종이에 코팅되더라도 종이와 코팅층 간의 탈락 현상을 막을 수 있었다. 소르비톨 모이어티의 비율이 높아지는 경우 충분한 경도의 확보가 되지 않아 내부 물품과의 마찰 등에 의해 부분적인 코팅층의 파괴가 발생하였으며, 이노시톨 모이어티의 비율이 높아지는 경우에는 종이와 코팅층이 분리되는 탈락 현상이 관찰되었다.In the present invention, a mixture of inositol moiety: sorbitol moiety in a weight ratio of 2:3 was used. At this time, it was possible to secure sufficient durability to not be destroyed even by internal and external stimuli that may occur during storage and distribution of the packaging material, and at the same time, it was possible to prevent the falling-off phenomenon between the paper and the coating layer even if it was coated on relatively flexible paper. When the ratio of the sorbitol moiety increased, sufficient hardness was not secured, and partial destruction of the coating layer occurred due to friction with internal articles, etc., and when the ratio of the inositol moiety increased, the paper and the coating layer were separated from each other. became
한편, 인산계 화합물이 코팅층에 과다하게 포함되는 경우에는 코팅층이 산성을 띄어 코팅층에 맞닿는 부분의 내용물이 부식될 위험이 있고, 미량 포함될 경우에는 기계적 물성(가령, 최대응역, 인장강도 등)의 발현이 충분하게 이루어지지 않을 수 있다. 상술한 두 문제점을 동시에 완화시킨다는 관점에서 인산계 화합물은 젤라틴 100 중량부 대비, 2.5 내지 3 중량부 포함되는 것이 바람직하다. On the other hand, if the phosphoric acid-based compound is excessively included in the coating layer, the coating layer is acidic and there is a risk of corrosion of the contents of the portion in contact with the coating layer. This may not be enough. From the viewpoint of simultaneously alleviating the above two problems, the phosphoric acid-based compound is preferably included in an amount of 2.5 to 3 parts by weight, based on 100 parts by weight of gelatin.
본 발명의 방수 및 항균 코팅층을 형성하기 위한 코팅액 조성물은 젤라틴 100 중량부 대비, 정제수 80 내지 120 중량부, 글리세린 25 내지 50 중량부, 천연물 유래의 항균 물질 10 내지 20 중량부 및 인산계 화합물 2.5 내지 3 중량부를 포함하여 제조된 것일 수 있으며, 본 발명 일 실시예에서는 코팅층을 구성하기 위하여, 젤라틴 100 중량부 대비, 정제수 100 중량부, 글리세린 30 중량부, 천연물 유래 항균 물질 15 중량부 및 상기 인산계 화합물 3 중량부를 혼합하여 방수 및 항균 코팅층 조성물을 제조하였으나, 이에 제한되는 것은 아니다. The coating solution composition for forming the waterproof and antibacterial coating layer of the present invention is based on 100 parts by weight of gelatin, 80 to 120 parts by weight of purified water, 25 to 50 parts by weight of glycerin, 10 to 20 parts by weight of an antibacterial substance derived from natural products, and 2.5 to 2.5 to phosphate compounds. It may be prepared by including 3 parts by weight, and in one embodiment of the present invention, in order to constitute the coating layer, 100 parts by weight of gelatin, 100 parts by weight of purified water, 30 parts by weight of glycerin, 15 parts by weight of an antibacterial material derived from natural products, and the phosphoric acid-based A waterproof and antibacterial coating layer composition was prepared by mixing 3 parts by weight of the compound, but is not limited thereto.
한편, 본 발명의 친환경 생분해성 포장재에 있어서, 상기 방수 및 항균 코팅층의 두께는 0.1 mm 내지 0.25 mm 사이인 것이 바람직하다. 가령, 코팅층의 두께가 0.1 mm 이하인 경우, 코팅층이 외력의 투사에 의하여 쉽사리 훼손될 수 있다. 반대로, 코팅층의 두께가 0.25 mm를 초과하는 경우, 코팅층을 효과적으로 형성하기 위하여 추가적인 접착제의 사용이 수반될 필요가 있게 된다. 따라서, 코팅층으로서 적절한 기계적 물성을 확보하는 것과 별도의 접착제를 필요로 하지 않는다는 관점에서, 상술한 수치범위를 만족하는 것이 바람직하다. 또한, 동일한 관점의 연장선상에서 코팅층의 두께는 0.1 mm 내지 0.15mm 사이인 것이 더욱 바람직하다.On the other hand, in the eco-friendly biodegradable packaging material of the present invention, the thickness of the waterproof and antibacterial coating layer is preferably between 0.1 mm to 0.25 mm. For example, when the thickness of the coating layer is 0.1 mm or less, the coating layer may be easily damaged by the projection of an external force. Conversely, when the thickness of the coating layer exceeds 0.25 mm, it becomes necessary to accompany the use of an additional adhesive to effectively form the coating layer. Therefore, it is preferable to satisfy the above-mentioned numerical range from the viewpoint of securing appropriate mechanical properties as a coating layer and not requiring a separate adhesive. In addition, it is more preferable that the thickness of the coating layer is between 0.1 mm and 0.15 mm on the extension line of the same viewpoint.
본 발명의 다른 실시태양으로서, 상기 코팅층은 온도 감응성 고분자 캡슐 내부에 생분해제가 함유되어 있는 분해 촉진제를 추가로 더 포함함으로써 일정 온도가 되면 분해가 촉진되도록 설정한 것일 수 있다.In another embodiment of the present invention, the coating layer may be set to promote decomposition when the temperature reaches a certain temperature by further including a decomposition accelerator containing a biodegradant in the temperature-sensitive polymer capsule.
이때, 상기 생분해제가 함유된 온도 감응성 고분자 캡슐 중 적어도 하나 이상은 적어도 일면이 코팅층의 외면에 노출된 것이 바람직하다.At this time, it is preferable that at least one surface of at least one of the temperature-sensitive polymer capsules containing the biodegradant is exposed to the outer surface of the coating layer.
본 발명에서 상기 생분해제는 지방산 에스테르계 고분자인 것이 바람직하다.In the present invention, the biodegradant is preferably a fatty acid ester-based polymer.
본 발명에서 상기 온도 감응성 고분자는 폴리(N-이소프로필아크릴아마이드)(Poly(N-isopropylacrylamide, PNIPAAm), 폴리(에틸렌옥사이드)-b-폴리(프로필렌옥사이드)-b-폴리(에틸렌옥사이드)(Poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide), PEO-PPO-PEO) 및 폴리에틸렌글리콜-폴리락틱-코-글리콜린산(poly(ethylene glycol)- poly(lactic-co-glycolic acid), PEG-PLGA) 중합체로 구성된 군에서 하나 이상 선택된 것일 수 있으며, 구체적으로는 PLGA-PEG-PLGA 고분자로 이루어진 것 일 수 있으나, 이에 제한되지 않는다.In the present invention, the temperature-sensitive polymer is poly(N-isopropylacrylamide) (Poly(N-isopropylacrylamide, PNIPAAm), poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (Poly (ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide), PEO-PPO-PEO) and polyethylene glycol-polylactic-co-glycolic acid (poly(ethylene glycol)-poly(lactic-co) -glycolic acid), may be one or more selected from the group consisting of PEG-PLGA) polymers, specifically, may be made of a PLGA-PEG-PLGA polymer, but is not limited thereto.
PEG-PLGA 고분자는 체내에서 독성을 유발하지 않으면서 분해 가능한 성질을 가지는 물질이다. PEG-PLGA polymer is a material having degradable properties without causing toxicity in the body.
1997년에 온도 감응성 겔화와 동시에 생분해성이고 독성이 적으며 장기적으로 유지될 수 있는 고분자에 대한 연구가 시작되면서, 그 중에서도 소수성이고 ester 결합으로 연결되어 생분해성 고분자인 폴리락틱-코-글리콜린산(poly(lactic-co-glycolic acid, PLGA)에 친수성 고분자인 폴리에틸렌글리콜(poly (ethylene glycol, PEG)를 결합시켜서 분해가 가능한 온도 감응성 고분자를 만든 연구들이 진행되었다. In 1997, research on a polymer that was biodegradable, less toxic, and could be maintained for a long time at the same time as temperature-sensitive gelation began in 1997. Among them, polylactic-co-glycolic acid (polylactic-co-glycolic acid ( Studies have been conducted to create decomposable temperature-sensitive polymers by combining poly(lactic-co-glycolic acid, PLGA) with poly(ethylene glycol, PEG), a hydrophilic polymer.
특히 PLGA-PEG-PLGA 타입의 고분자에 대한 연구도 이루어졌으며, 상기 타입의 고분자는 중심(core)에 PLGA가 있고 그 외부에 구부러진 PEG 껍질이 노출되며 마이셀(캡슐)이 된다. 농도와 온도가 증가하면 마이셀의 수와 연결된 마이셀 그룹의 수가 증가하며 응집(aggregation)이 일어나고 이들의 패킹이 진행되어 안정한 겔이 형성된다. 하지만 더 온도가 올라가게 되면 소수성의 PLGA 사슬이 단단하게 수축(shrink)하면서 동시에 PEO 사슬에서도 탈수가 일어나게 되고, 수축된 마이셀이 응집을 이루어 응축하게 되면서 상기 마이셀(캡슐) 내부에 함유되어 있던 생분해제가 노출되어 코팅층에 대한 분해가 시작된다.In particular, studies on PLGA-PEG-PLGA type polymers have been made, and the polymers of this type have PLGA in the core and the bent PEG shell is exposed to the outside to become micelles (capsules). As the concentration and temperature increase, the number of micelles and the number of linked micellar groups increases, aggregation occurs and their packing proceeds to form a stable gel. However, as the temperature rises, the hydrophobic PLGA chains contract tightly and at the same time, dehydration occurs in the PEO chains, and the contracted micelles aggregate and condense. As it is exposed, decomposition of the coating layer begins.
즉, 본 발명은 용기 내부에 탑재되는 물품의 보관 및 유통이 완료된 이후 폐기물이 되어 처리되는 과정에서 일정 온도 이상의 환경에 노출되면 온도 감응성 고분자 캡슐의 구조가 변경되어 내부에 함유된 생분해제가 노출됨으로써 코팅층에 대한 분해작용이 시작되는 것을 특징으로 한다. That is, in the present invention, after storage and distribution of articles mounted inside the container are completed, when exposed to an environment above a certain temperature in the process of being treated as waste, the structure of the temperature-sensitive polymer capsule is changed and the biodegradant contained therein is exposed, thereby exposing the coating layer It is characterized in that the decomposition action for
때문에, 상기한 바와 같이 코팅층 내부에 온도 감응성 고분자 캡슐 구조를 포함시킴으로써 물품이 보관 및 유통되는 과정에서는 생분해 과정을 최대한 지연시킬 수 있어 포장재의 장기간 보관이 가능해지는 이점이 존재한다. Therefore, as described above, by including the temperature-sensitive polymer capsule structure in the coating layer, the biodegradation process can be delayed as much as possible in the process of storing and distributing the article, thereby enabling long-term storage of the packaging material.
상기 미세 캡슐 형태의 분해촉진제는 젤라틴 100 중량부 대비 1 내지 2 중량부 포함되도록 하여 제조하는 것이 바람직하며, 본 발명에서는 젤라틴 100 중량부 대비 1.5 중량부 포함하도록 하여 제조하였다. 이는 충분한 분해 촉진효과를 얻음과 동시에 비용적인 측면에서의 생산성을 고려한 것이다.The microcapsule-type decomposition accelerator is preferably prepared to contain 1 to 2 parts by weight based on 100 parts by weight of gelatin, and in the present invention, 1.5 parts by weight based on 100 parts by weight of gelatin was prepared. This is in consideration of productivity in terms of cost while obtaining sufficient decomposition accelerating effect.
한편, 본 명세서는 포장재를 준비하는 단계; 상기 포장재의 일면 또는 양면에 코팅층을 형성하는 단계; 및 상기 코팅층이 형성된 포장재를 포장용기의 형태로 가공하는 단계;를 포함하는 친환경 생분해성 포장용기의 제조방법을 추가로 개시한다.On the other hand, the present specification comprises the steps of preparing a packaging material; forming a coating layer on one or both surfaces of the packaging material; and processing the packaging material on which the coating layer is formed in the form of a packaging container; further discloses a method of manufacturing an eco-friendly biodegradable packaging container comprising a.
구체적으로, 상기 코팅층을 형성하는 단계는 코팅액을 준비하는 단계, 코팅층을 형성하는 단계, 및 코팅층을 부착하는 단계를 포함하는 것이 바람직하다.Specifically, the step of forming the coating layer preferably includes preparing a coating solution, forming the coating layer, and attaching the coating layer.
상기 코팅층을 부착하는 단계는 포장재의 일면에 코팅층을 위치시키고 일정시간 가열하는 것으로서, 55℃ 내지 65℃ 사이의 온도조건에서 약 10 내지 30분동안 수행되는 것이 바람직하다.The step of attaching the coating layer is to place the coating layer on one surface of the packaging material and heat it for a certain time, and it is preferably performed for about 10 to 30 minutes at a temperature condition between 55°C and 65°C.
본 단계에서 가열이 이루어짐으로써, 코팅층에 포함된 수분의 증발이 유도된다. By heating in this step, evaporation of moisture contained in the coating layer is induced.
한편, 바탕층과 상기 바탕층의 일면 상에 위치한 코팅층이 55℃ 미만의 온도조건에서 10분 미만 동안 가열될 경우, 코팅층과 포장재인 종이 사이의 부착이 충분히 이루어지지 않을 수 있다. 반대로, 65℃ 초과의 온도조건에서 30분을 초과하여 가열될 경우, 코팅층의 지나친 수축 또는 파괴로 인하여 코팅층의 기능 훼손이 유발될 수 있다.On the other hand, when the base layer and the coating layer located on one surface of the base layer are heated at a temperature of less than 55° C. for less than 10 minutes, adhesion between the coating layer and the paper, which is a packaging material, may not be sufficiently achieved. Conversely, when heated for more than 30 minutes at a temperature condition of more than 65° C., the function of the coating layer may be damaged due to excessive shrinkage or destruction of the coating layer.
상기한 코팅층이 형성된 포장재는 여러가지 형태로 가공하여 친환경 생분해성 포장용기를 제조할 수 있다. 이를테면 상자 형태가 되도록 가공하여 내부에 신선식품류를 비롯한 각종 식품 등을 보관, 유통하도록 할 수 있으며, 용기 내부 신선식품의 신선도를 육안으로 확인하고, 수분 등에 의해 과일이 짓무르는 것을 방지할 수 있도록 하나 이상의 구멍이 형성되도록 할 수 있다(도 1 내지 3).The above-mentioned coating layer-formed packaging material can be processed into various forms to manufacture an eco-friendly biodegradable packaging container. For example, it can be processed to form a box so that various foods including fresh foods can be stored and distributed inside. One or more holes may be formed (FIGS. 1-3).
상술한 수단의 채용을 통하여, 본 발명은 생분해가 가능한 소재인 종이, 젤라틴 및 분해 촉진제 등으로 구성되는 바, 본 발명의 친환경 생분해성 포장재는 무기고분자의 첨가되지 아니함에도 잔류부 없이 생분해가 가능하다.Through the adoption of the above-described means, the present invention is composed of paper, gelatin, and decomposition accelerators, which are biodegradable materials, and the eco-friendly biodegradable packaging material of the present invention is biodegradable without any residue even without the addition of inorganic polymers. .
또한, 본 발명의 분해 촉진제는 생분해제가 온도 감응성 고분자 캡슐 내부에 위치하게 되는 바, 일정 온도 이상의 고온에 노출시키기 전까지는 용기의 생분해를 최대한 지연시켜 용기의 보관기간을 현저히 연장시킬 수 있다.In addition, the decomposition accelerator of the present invention can significantly extend the storage period of the container by delaying the biodegradation of the container as much as possible until the biodegradation agent is located inside the temperature-sensitive polymer capsule and exposed to a high temperature above a certain temperature.
또한, 본 발명은 별도의 계면활성제 혹은 접착제의 사용 없이도 종이 등 포장재의 일면에 코팅층을 형성될 수 있다.In addition, the present invention can form a coating layer on one surface of a packaging material such as paper without the use of a separate surfactant or adhesive.
본 발명의 효과는 상기한 효과로 한정되는 것은 아니며, 본 발명의 상세한 설명 또는 청구범위에 기재된 발명의 구성으로부터 추론 가능한 모든 효과를 포함하는 것으로 이해되어야 한다.It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.
도 1 내지 3은 본 발명 일 실시예에 따라 제조된 포장용기의 예시를 나타낸 것이다.1 to 3 show examples of packaging containers manufactured according to an embodiment of the present invention.
본 출원에서 사용하는 용어는 단지 특정한 예시를 설명하기 위하여 사용되는 것이다. 때문에 가령 단수의 표현은 문맥상 명백하게 단수여야만 하는 것이 아닌 한, 복수의 표현을 포함한다. 덧붙여, 본 출원에서 사용되는 “포함하다” 또는 “구비하다”등의 용어는 명세서 상에 기재된 특징, 단계, 기능, 구성요소 또는 이들을 조합한 것이 존재함을 명확히 지칭하기 위하여 사용되는 것이지, 다른 특징들이나 단계, 기능, 구성요소 또는 이들을 조합한 것의 존재를 예비적으로 배제하고자 사용되는 것이 아님에 유의해야 한다.The terms used in this application are only used to describe specific examples. Therefore, for example, a singular expression includes a plural expression unless the context clearly requires it to be singular. In addition, terms such as “comprises” or “comprises” used in this application are used to clearly indicate that the features, steps, functions, components, or combinations thereof described in the specification exist, and other features It should be noted that it is not intended to be used to preliminarily exclude the existence of elements, steps, functions, components, or combinations thereof.
한편, 다르게 정의되지 않는 한, 본 명세서에서 사용되는 모든 용어들은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 일반적으로 이해되는 것과 동일한 의미를 가진 것으로 보아야 한다. 따라서, 본 명세서에서 명확하게 정의하지 않는 한, 특정 용어가 과도하게 이상적이거나 형식적인 의미로 해석되어서는 안 된다.On the other hand, unless otherwise defined, all terms used herein should be regarded as having the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Accordingly, unless explicitly defined herein, specific terms should not be construed in an unduly idealistic or formal sense.
본 명세서의 각 기재에 있어서, 친환경성(eco-friendliness)이란 환경 친화적인 성격을 축약하여 지칭한 것이다. 기술적인 관점에서 친환경성이란, 특정 제품을 생산하기 위하여 소모되는 원료와 에너지가 절약될 수 있거나, 특정 제품의 재활용이 별도의 자원소모 없이 (혹은 자원의 미미한 소모만으로도) 도모될 수 있거나, 특정 제품의 폐기가 추가적인 자원의 소모 없이 용이하게 수행되거나, 폐기 과정에서 환경오염원의 발생이 적거나 부재한 것 등을 의미한다.In each description of the present specification, eco-friendliness refers to abbreviated eco-friendly characteristics. From a technical point of view, eco-friendliness means that the raw materials and energy consumed to produce a specific product can be saved, the recycling of a specific product can be promoted without separate resource consumption (or only insignificant consumption of resources), or a specific product It means that disposal of waste is easily carried out without consumption of additional resources, or that there is little or no occurrence of environmental pollutants in the process of disposal.
또한, 본 명세서의 기재에 있어서, 친환경성이란 달리 지속가능한 발전과 맥락을 같이 하는 것으로 이해될 수 있다. 지속가능한 발전을 가능하게 하는 일 용인으로서 친환경성을 갖춘 제품의 사용을 고려할 수 있기 때문이다. 따라서, 명시적이 기재가 없더라도, 친환경성의 보장은 지속가능한 발전에 대한 기여를 수반하고 있는 것으로 이해되어야 한다.In addition, in the description of the present specification, eco-friendliness may be understood as being in the same context as otherwise sustainable development. This is because it is possible to consider the use of eco-friendly products as a daily tolerance that enables sustainable development. Therefore, even if there is no explicit description, it should be understood that the guarantee of eco-friendliness entails a contribution to sustainable development.
본 명세서의 각 기재에 있어서, 식품 포장재란 식품의 저장, 분배, 포장 또는 분할을 위하여 사용되는 재료를 총칭하는 용어이다. 이때, 식품의 형상 및 특성이 특별히 규정되지 않은 것으로서, 식용 가능한 것이라면 별도의 제한은 없는 것이라고 이해되어야 한다. 가령, 고체상의 식품 또는 액체상의 식품의 보관에 본 발명의 식품 포장재가 사용될 수 있다. 본 발명의 일 실시예에서는 식품 중 신선식품에 대한 것을 주로 기술하고 있으나, 이에 제한되는 것은 아니다.In each description of the present specification, the food packaging material is a generic term for materials used for storage, distribution, packaging, or division of food. At this time, it should be understood that the shape and characteristics of the food are not specifically defined, and there is no separate limitation as long as it is edible. For example, the food packaging material of the present invention can be used for storage of solid food or liquid food. In one embodiment of the present invention, it is mainly described for fresh food among foods, but is not limited thereto.
또한, 본 명세서의 기재에 있어서, 식품 포장재는 전술한 바와 같이 재료임을 나타내는 용어이나, 그 용어의 사용이 반드시 식품 포장용기의 제작에 사용되는 '원료'로서 제한하여 이해되어서는 안 된다. 이는, 본 발명의 식품 포장재가 그 자체로서 특정한 외형을 취할 수 있기 때문이다. 다만, 본 발명의 식품 포장재는 외형에 의하여 그 특성이 제한되는 것은 아님에 유의할 필요가 있다.In addition, in the description of the present specification, a food packaging material is a term indicating that it is a material as described above, but the use of the term should not be understood as being limited as a 'raw material' used in the manufacture of a food packaging container. This is because the food packaging material of the present invention can take on a specific shape as such. However, it is necessary to note that the characteristics of the food packaging material of the present invention are not limited by the appearance.
이하, 본 발명을 실시예에 의해 상세히 설명한다. 단, 하기 실시예는 본 발명을 예시하는 것일 뿐, 본 발명이 하기 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail by way of Examples. However, the following examples only illustrate the present invention, and the present invention is not limited by the following examples.
실시예 1. 방수 및 항균 코팅층이 형성된 포장재의 제조Example 1. Preparation of a packaging material having a waterproof and antibacterial coating layer
본 발명의 친환경 생분해성 포장용기를 제조하기 위하여, 재생용지로 이루어진 포장재에 방수 및 항균 코팅층을 형성하였다.In order to manufacture the eco-friendly biodegradable packaging container of the present invention, a waterproof and antibacterial coating layer was formed on a packaging material made of recycled paper.
상기 코팅층은 방수 및 항균 코팅층 조성물을 두께 약 2 mm로 균일하게 펼치고, 상온에서 12시간 건조하여 박막을 얻고, 상기 박막을 재생용지로 이루어진 포장재 일면에 위치시키고 60℃에서 약 15분동안 가열하여 두께 0.1 내지 0.15mm가 되도록 형성한 것으로서, 상기 방수 및 항균 코팅층 조성물은 젤라틴 100 중량부 대비, 정제수 100 중량부, 글리세린 30 중량부, 천연물 유래 항균 물질 15 중량부 및 상기 인산계 화합물 3 중량부를 혼합하여 제조하였다.The coating layer is a waterproof and antibacterial coating layer composition uniformly spread to a thickness of about 2 mm, dried at room temperature for 12 hours to obtain a thin film, and the thin film is placed on one side of a packaging material made of recycled paper and heated at 60° C. for about 15 minutes to obtain a thickness As formed to be 0.1 to 0.15 mm, the waterproof and antibacterial coating layer composition is prepared by mixing 100 parts by weight of gelatin, 100 parts by weight of purified water, 30 parts by weight of glycerin, 15 parts by weight of a natural antibacterial substance and 3 parts by weight of the phosphate compound. prepared.
상술한 바, 상기 천연물 유래 항균 물질은 생강, 타임, 강리, 세이지, 황백 및 계피를 각각 1:1:1:1:3:1의 중량비로 혼합한 후 90℃에서 80%에탄올을 이용하여 4시간동안 환류 추출한 후 감압농축하여 수득한 것을 사용하였고, 상기 인산계 화합물은 이노시톨 모이어티:소르비톨 모이어티가 2:3의 중량비로 혼합된 것을 사용하였다.As described above, the natural product-derived antibacterial material was prepared by mixing ginger, thyme, brine, sage, yellow white and cinnamon in a weight ratio of 1:1:1:1:3:1, respectively, and then using 80% ethanol at 90° C. What was obtained by extraction under reflux for a period of time and concentration under reduced pressure was used, and as the phosphoric acid-based compound, a mixture of inositol moiety: sorbitol moiety in a weight ratio of 2:3 was used.
실시예 2. 생분해성이 강화된 포장재의 제조Example 2. Preparation of packaging material with enhanced biodegradability
상기 실시예 1의 포장재도 생분해가 가능한 물질만으로 구성되어 있으나, 생분해성을 강화하기 분해 촉진제를 포함한 포장재를 제조하였다.The packaging material of Example 1 is also composed of only biodegradable materials, but in order to enhance biodegradability, a packaging material including a decomposition accelerator was prepared.
구체적으로, 온도 감응성 고분자 물질(PLGA-PEG-PLGA) 35 중량부에 지방산 에스테르계 고분자(PLA) 25 중량부를 혼합하여 캡슐화하고, 약 100℃에서 중량평균 분자량이 100,000인 프로필렌 고분자 100 중량부와 함께 약 2분간 혼합한 후 5 내지 10℃로 급속 냉각하여 분해 촉진제를 준비하였다. Specifically, 25 parts by weight of a fatty acid ester-based polymer (PLA) is mixed with 35 parts by weight of a temperature-sensitive polymer material (PLGA-PEG-PLGA) and encapsulated, and 100 parts by weight of a propylene polymer having a weight average molecular weight of 100,000 at about 100° C. After mixing for about 2 minutes, the decomposition accelerator was prepared by rapid cooling to 5 to 10°C.
이때, 상기 실시예 1과 동일한 방법으로 코팅층을 형성하되, 젤라틴 100 중량부 대비 상기 분해 촉진제 1.5 중량부를 포함한 점 만을 다르게 하여 본 발명 실시예 2의 포장재를 제조하였다. At this time, the coating layer was formed in the same manner as in Example 1, except that 1.5 parts by weight of the decomposition accelerator was included with respect to 100 parts by weight of gelatin to prepare a packaging material of Example 2 of the present invention.
실험예 1. 방수도 확인 실험Experimental Example 1. Test to confirm waterproofness
상기 방수 및 항균 코팅층의 형성이 완료된 본 발명 포장재의 방수도를 확인하기 위하여, AATCC 35 및 KS K 0593을 준용하여 방수도(빗물법)을 실시하였다.In order to confirm the waterproofness of the packaging material of the present invention in which the formation of the waterproof and antibacterial coating layer has been completed, the waterproofness (rainwater method) was performed by applying AATCC 35 and KS K 0593 mutatis mutandis.
간략히, 1피트 높이에서 5분간 빗물을 분사했을 때, 상기 실시예 1 및 2의 포장재 이면에 부착된 흡습지 중량이 전혀 증가하지 않아 상기 기준을 통과하였고, 자체적으로 강화된 실험을 위하여 2피트 높이에서 30분간 빗물을 분사한 경우에도 표준 흡수지의 무게 증가량이 1g을 넘지 않아 본 발명 실시예 1 및 2의 방수성이 매우 우수한 것을 확인하였다.Briefly, when rainwater was sprayed at a height of 1 foot for 5 minutes, the weight of the moisture absorbent paper attached to the back surface of the packaging materials of Examples 1 and 2 did not increase at all, so it passed the above criteria, and at a height of 2 feet for self-reinforced experiments Even when rainwater was sprayed for 30 minutes, the weight increase of the standard absorbent paper did not exceed 1 g, so it was confirmed that the waterproof properties of Examples 1 and 2 of the present invention were very excellent.
실험예 2. 항균 효과 확인 실험Experimental Example 2. Antibacterial effect confirmation experiment
본 발명의 포장재 및 이를 이용한 포장용기는 그 자체로서 방수 및 항균활성을 가지는 것을 특징으로 하는 바, 습하고 영양 공급이 원활한 환경을 쉽게 유발할 수 있는 신선식품 등의 함수량이 많은 물품의 보관 및 유통 과정에서의 곰팡이나 세균의 번식을 억제할 수 있는 것을 특징으로 하고 있다.The packaging material of the present invention and the packaging container using the same are characterized in that they have waterproof and antibacterial activity by themselves. It is characterized in that it can inhibit the growth of fungi and bacteria.
이를 확인하기 위하여 KSK-0693:2011을 준용하여 항균성을 확인하였다. 구체적으로, 실시예 1 및 2와 표면에 인위적으로 스크래치를 내 코팅층을 손상시킨 비교예 1을 대상으로 하여, 측정 대상이 되는 스테필로코커스 아우레우스(Staphylococus aureus) 및 대장균(Escherichia coli)를 1 x 107개 접종하여 20시간 동안 배양한 뒤, 정균의 감소율을 %로 측정하여 하기 표 1에 나타내었다.To confirm this, KSK-0693:2011 was applied mutatis mutandis to confirm antibacterial properties. Specifically, for Examples 1 and 2 and Comparative Example 1 in which the coating layer was damaged by artificially scratching the surface, the measurement target Staphylococcus aureus ( Staphylococcus aureus ) and Escherichia coli ( Escherichia coli ) After inoculating x 10 7 pieces and culturing for 20 hours, the reduction rate of bacteriostatic bacteria was measured in % and shown in Table 1 below.
상기 표 1에 나타난 바와 같이, 본 발명 실시예 1 및 2의 코팅은 그 자체적으로도 우수한 항균성을 가지고 있으나, 코팅층이 손상되면 포장재에 세균이 쉽게 증식하는 것을 확인하였다. 실험예 3. 생분해도 확인 실험 As shown in Table 1, the coatings of Examples 1 and 2 of the present invention have excellent antibacterial properties by themselves, but when the coating layer is damaged, it was confirmed that bacteria easily multiply on the packaging material. Experimental Example 3. Biodegradability Confirmation Experiment
KS M3100-1(ISO14855)에 준하여 본 발명의 친환경 생분해성 포장재의 생분해도를 측정하였다. 상기 기준은 퇴비화 조건에서 발생하는 이산화탄소의 양을 측정하여, 플라스틱 수지의 생분해도(%)를 측정하는 것을 골자로 한다. 비교예로서, 종이 표면에 플라스틱 코팅이 된 포장용지를 사용하였으며, 본 발명 실시예 1 및 2와의 결과를 비교하였다. 측정기간은 총 40일로서 5일간격으로 측정되었다. 동일 중량의 실시예와 비교예에 대하여 측정된 결과는 하기 표 2와 같다. 하기 표 2의 수치는 10종의 실시예1, 2와 10종의 비교예 각각의 평균 값에 해당하며, 소수점 둘째자리에서 반올림한 값이다.The biodegradability of the eco-friendly biodegradable packaging material of the present invention was measured in accordance with KS M3100-1 (ISO14855). The standard is based on measuring the amount of carbon dioxide generated under composting conditions to measure the biodegradability (%) of the plastic resin. As a comparative example, a packaging paper having a plastic coating on the paper surface was used, and the results were compared with Examples 1 and 2 of the present invention. The measurement period was a total of 40 days, and measurements were taken every 5 days. The results measured for Examples and Comparative Examples of the same weight are shown in Table 2 below. The numerical values in Table 2 below correspond to the average values of each of 10 types of Examples 1 and 2 and 10 types of Comparative Examples, and are values rounded to two decimal places.
상기 표 2를 참조하면, 실시예 1 및 2는 비교예 대비 현저히 높은 생분해도를 보였으며, 특히 실시예 2의 경우 기간의 경과에 따라 생분해 속도가 점점 촉진되는 것을 확인하였다. Referring to Table 2, Examples 1 and 2 showed a significantly higher degree of biodegradation compared to Comparative Examples, and in particular, in the case of Example 2, it was confirmed that the rate of biodegradation was gradually accelerated over time.
전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성 요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성 요소들도 결합된 형태로 실시될 수 있다.The foregoing description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.
본 발명의 범위는 후술하는 청구범위에 의하여 나타내어지며, 청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.
Claims (1)
상기 코팅층은 젤라틴 100 중량부 대비, 정제수 80 내지 120 중량부, 글리세린 25 내지 50 중량부, 천연물 유래의 항균 물질 10 내지 20 중량부, 인산계 화합물 2.5 내지 3 중량부 및 분해촉진제 1 내지 2 중량부를 포함하여 제조된 것으로서,
상기 천연물 유래의 항균 물질은 생강(Zingiber officinale), 타임(Thymus vulgaris), 강리(gracilaria verrucosa), 세이지(Salvia officinalis), 황백(Phellodendron amurense) 및 계피(Cinnamomum Schaeff)를 1:1:1:1:3:1의 중량비로 혼합한 후 추출하여 제조된 것이고,
상기 분해 촉진제는 적어도 일부가 미립자 형상인 온도 감응성 고분자 캡슐 내부에 지방산 에스테르계 생분해제가 함유되어 있는 것으로서,
상기 온도 감응성 고분자는 폴리(N-이소프로필아크릴아마이드)(Poly(N-isopropylacrylamide, PNIPAAm), 폴리(에틸렌옥사이드)-b-폴리(프로필렌옥사이드)-b-폴리(에틸렌옥사이드)(Poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide), PEO-PPO-PEO) 및 폴리에틸렌글리콜-폴리락틱-코-글리콜린산(poly(ethylene glycol)- poly(lactic-co-glycolic acid), PEG-PLGA) 중합체로 구성된 군에서 하나 이상 선택된 것으로서,
상기 코팅층의 두께는 0.1 mm 내지 0.15mm 사이로 형성되는 것인,
친환경 생분해성 포장재.As an eco-friendly biodegradable packaging material in which a coating layer with waterproof and antibacterial activity is formed on the surface of recycled paper,
The coating layer is based on 100 parts by weight of gelatin, 80 to 120 parts by weight of purified water, 25 to 50 parts by weight of glycerin, 10 to 20 parts by weight of an antibacterial substance derived from a natural product, 2.5 to 3 parts by weight of a phosphoric acid-based compound, and 1 to 2 parts by weight of a decomposition accelerator As manufactured including,
The antibacterial substances derived from the natural products are ginger ( Zingiber officinale ), thyme ( Thymus vulgaris ), licorice ( gracilaria verrucosa ), sage ( Salvia officinalis ), yellow white ( Phellodendron amurense ) and cinnamon ( Cinnamomum Schaeff ) 1:1:1:1 : It is prepared by mixing in a weight ratio of 3:1 and then extracting,
The decomposition accelerator contains a fatty acid ester-based biodegradant in the temperature-sensitive polymer capsule, at least a portion of which is in the form of fine particles,
The temperature-sensitive polymer is poly(N-isopropylacrylamide) (Poly(N-isopropylacrylamide, PNIPAAm), poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (Poly(ethylene oxide) )-b-poly(propylene oxide)-b-poly(ethylene oxide), PEO-PPO-PEO) and polyethylene glycol-polylactic-co-glycolic acid (poly(ethylene glycol)-poly(lactic-co-glycolic acid) ), PEG-PLGA) as at least one selected from the group consisting of polymers,
The thickness of the coating layer will be formed between 0.1 mm to 0.15 mm,
Eco-friendly biodegradable packaging.
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| KR102457141B1 (en) | 2022-10-21 |
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