WO2015111866A1 - Agent de revêtement écologique pour du papier et procédé permettant de produire du papier écologique à l'aide de ce dernier - Google Patents

Agent de revêtement écologique pour du papier et procédé permettant de produire du papier écologique à l'aide de ce dernier Download PDF

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Publication number
WO2015111866A1
WO2015111866A1 PCT/KR2015/000383 KR2015000383W WO2015111866A1 WO 2015111866 A1 WO2015111866 A1 WO 2015111866A1 KR 2015000383 W KR2015000383 W KR 2015000383W WO 2015111866 A1 WO2015111866 A1 WO 2015111866A1
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WIPO (PCT)
Prior art keywords
paper
friendly
eco
coating agent
coating
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PCT/KR2015/000383
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English (en)
Korean (ko)
Inventor
김영록
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동국대학교 산학협력단
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Publication of WO2015111866A1 publication Critical patent/WO2015111866A1/fr

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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
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the present invention relates to a recyclable, naturally degradable eco-friendly paper coating and a method for producing paper coated with an eco-friendly coating.
  • Plastics are highly depended on in modern society that adds great value to convenient household goods. Plastics are still the preferred industrial materials in various fields because of their light and strong properties. Thanks to the convenience and economical efficiency of mass production and mass consumption, the use of petroleum-derived plastics is increasing despite the environmental concerns and is actively applied to the disposable food container market.
  • papers lack such physical properties and are widely used by reinforcing basic physical properties by coating or laminating polyethylene (PE), which is a thermoplastic synthetic resin. Moreover, due to its good heat sealability, it is used predominantly in paper cups or containers without competition.
  • PE polyethylene
  • Korean Patent No. 10-1089765 devised a method having water resistance, oil resistance, and heat sealability by coating a coreshell structured copolymer latex through an on-machine coating facility during conventional papermaking of paper. Manufacturing cost as a food packaging material is competitive, but due to the nature of the papermaking equipment operating at high speed does not sufficiently remove the heat and pressure generated during the drying process, the rolled paper rolls stick together. That is, due to the blocking property of the latex component to be applied, it is difficult to lead to actual mass production.
  • Korean Patent No. 10-1089765 devised a method having water resistance, oil resistance, and heat sealability by coating a coreshell structured copolymer latex through an on-machine coating facility during conventional papermaking of paper. Manufacturing cost as a food packaging material is competitive, but due to the nature of the papermaking equipment operating at high speed does not sufficiently remove the heat and pressure generated during the drying process, the rolled paper rolls stick together. That is, due to the blocking property of the latex component to be applied, it is difficult to lead to actual mass
  • 10-1100954 proposes a food packaging paper that emphasizes environmental friendliness by coating a paper with a coating solution containing a fluorine-based oil and polyvinyl alcohol (PVA).
  • PVA has its own water absorbency, and if the water absorbency increases, the barrier property may drop sharply and eventually the water resistance may be lost.
  • a coating liquid mixed with PVA and an acrylic emulsion was coated on paper to secure water resistance, oil resistance, and heat sealability. Basically, it emphasizes the harmlessness and eco-friendliness of the human body, but there is a limit of water resistance when physically mixed with the acrylic resin without modifying the PVA as described above. Moreover, heat sealability is not complete in such cases.
  • Korean Patent Laid-Open Publication No. 10-2011-0036244 proposed a cup base paper manufacturing method applying a polylactic acid (PLA), a plant-derived resin.
  • PLA polylactic acid
  • PLA is considered to be environmentally friendly because it is a recently attracted PE alternative material and its origin is not petroleum but plant.
  • paper cups produced by this method are still expensive to manufacture compared to PE cups, and the recycling of waste paper is not yet technically followed.
  • An object of the present invention is to provide an environmentally friendly coating for papermaking.
  • Another object of the present invention is to provide an eco-friendly paper coated with the eco-friendly coating agent.
  • Still another object of the present invention is to provide a method for manufacturing environmentally friendly paper.
  • the present invention provides an eco-friendly coating agent for paper making a copolymer resin consisting of a silicone-based polymer and an acrylic polymer.
  • the present invention provides an eco-friendly paper coated with the eco-friendly coating agent.
  • the present invention is to prepare a paper base paper not coated with 80 to 400 g / m2 basis weight; Coating the inner surface of the paper, the eco-friendly coating agent at 4.0 to 20.0 g / m2 based on the solids content of the coating agent; It provides a method of manufacturing eco-friendly paper comprising the step.
  • Eco-friendly paper coated with an eco-friendly coating agent according to the present invention is excellent in water resistance, oil resistance and heat sealing, harmless to the human body for food packaging paper and paper cups, can be recycled as a raw material of the paper, it is also environmentally friendly because it has a natural degradability.
  • the paper industry can be easily produced through a conventional manufacturing method, and additional modifications can be made to meet market demands.
  • the paper manufacture molded by using the paper coating coated with an environmentally friendly coating according to the present invention can be expected to reduce the production cost and molding cost is not high compared to the conventional PE molded products.
  • Figure 1 shows a cross-section of the eco-friendly paper of the present invention.
  • Figure 2 shows the manufacturing process of coating the coating solution on the paper base in an environmentally friendly paper coating process (air knife type), that is, air knife method according to an embodiment of the present invention.
  • Figure 3 shows a sample photograph molded the eco-friendly paper cup using a coated paper according to an embodiment of the present invention.
  • the present invention provides an eco-friendly coating agent for paper making a copolymer comprising a silicone-based polymer comprising a repeating unit represented by Formula 1 and an acrylic polymer comprising a repeating unit represented by the following Formula 2.
  • R 1 to R 4 are the same or different, and each independently hydrogen or a substituted or unsubstituted alkyl or aryl group.
  • the viscosity of the copolymer resin consisting of the silicone-based polymer and the acrylic polymer according to the present invention may be 5 to 600 cPs.
  • the present invention provides an eco-friendly paper coated with the eco-friendly coating agent.
  • Paper as used herein includes both paper cup paper or paper paper for food packaging, which is commonly produced and marketed in the paper industry.
  • the paper may be a paper that the food safety is secured.
  • Paper used in the present invention may be used in the range of 80g / m2 to 400g / m2 basis weight of the paper or food paper (non-coated cup paper not coated) produced and distributed in the paper industry.
  • the base paper of less than 80 g / m 2 has a low thickness and strength, making it difficult to maintain shape and water resistance when forming a cup or a food container.
  • Base papers exceeding 400 g / m 2 basis weight are difficult to produce in a single process with conventional papermaking equipment and are not commonly used.
  • Eco-friendly coating agent of the present invention includes a copolymer resin consisting of a silicone-based polymer and an acrylic polymer.
  • the silicone-based polymer and the acrylic polymer are the same as the following Chemical Formulas 1 and 2, respectively.
  • R 1 to R 4 are the same or different, and each independently hydrogen or a substituted or unsubstituted alkyl group or an aryl group, n 1 and n 2 of the chemical structure that determines the molecular weight size of each) Is a number representing a repeat.
  • the R 1 to R 4 may include an R group disclosed in Table 1 below, but is not limited thereto and may be selected according to the molecular weight range of the copolymer resin.
  • Table 1 below shows possible forms of R 1 to R 4 according to formula (1) and (2).
  • the environmentally friendly coating agent is a water-soluble solution that may be included in the copolymer resin consisting of the silicone-based polymer and acrylic polymer from 10% to 50% by weight based on the total weight of the aqueous solution.
  • the weight ratio of the silicone-based polymer and the acrylic polymer of the copolymer resin may be formed of 1:99 to 30:70 and is particularly preferably polymerized in a ratio of 5:95.
  • the ratio is out of the above range, for example, when the proportion of the silicone-based polymer of the copolymer resin is low, the adhesiveness may be high, resulting in the phenomenon of sticking between the products, resulting in a decrease in productivity. Cracks may occur on the surface.
  • the copolymer resin may have a viscosity of 5 cPs to 600 cPs. If the content of the copolymer resin is lower than 10% by weight, the water resistance and heat adhesiveness after coating may decrease, which may cause a function and poor molding as a container for liquids. This can happen.
  • the present invention is to prepare a paper base paper not coated with 80 to 400 g / m2 basis weight; Coating the inner surface of the base paper (cross section where the food touches) with the eco-friendly coating agent at 4.0 to 20.0 g / m 2 based on the solids content of the coating agent; It provides a method of manufacturing eco-friendly paper comprising the step.
  • the manufacturing method may further comprise the step of coating the outer surface of the paper base paper (cross section not food), 0.1 to 5.0 g / m2 based on the solid content of the coating agent.
  • the method of manufacturing the eco-friendly paper can be achieved by coating on the paper the eco-friendly coating agent of the present invention having heat sealability and water resistance, using a conventional coating equipment in the paper industry.
  • Coating equipment for coating can be used both on-machine cotta or off-machine cotta conventional in the paper industry.
  • the coating equipment and method of the representative paper industry are effective in applying a roll coater, blade coater, rod coater, air knife coater, and low coating amount. Any method selected from the group consisting of a controllable short dwell coater, a bill balde coater and a gate roll coater is applicable.
  • the same coating effect can be obtained in a gravure printing apparatus.
  • the eco-friendly coating agent of the present invention can be coated on one side of the paper base using the coating equipment.
  • the coated side can be the inner surface where the food touches.
  • Coating can be carried out from 4.0 g / m 2 to 20.0 g / m 2 on a solids basis. If the coating amount is less than 4.0 g / m 2, there may be a lack of water resistance and heat sealing, and it is difficult to expect oil resistance in a thin film due to uneven coating. If the coating amount is more than 20.0 g / m2 the blocking property is high, the releasability is poor, and the coating film may crack when excessive drying.
  • an additional coating of the eco-friendly coating agent of the present invention may be applied from 0.1 g / m 2 to 5.0 g / m 2 on the outer surface of the paper.
  • Can be This is because when the eco-friendly paper of the present invention is used in summer, especially when used as a cold drink cup or a package requiring refrigeration, condensation of water vapor occurs on the outer surface due to the temperature difference between both sides of the paper. To prevent it.
  • the coating liquid is less than 0.1 g / m2
  • the coating liquid is more than 5.0 g / m2 may be poor printability on the outside.
  • the eco-friendly paper which is endowed with water resistance, oil resistance and heat sealability may be subjected to a conventional paper coating pigment on an outer surface for further processing or for improving printability, for example, to improve printability.
  • All of the materials coated on the paper are used in the food packaging industry in general, the entire manufacturing process is made in an aqueous environment, so that environmentally friendly and food safety can be achieved.
  • the finished product has alkali dissociation property, so it can be collected after achieving the purpose of use as a packaging material and recycled mostly as a paper material through a paper maker.
  • the eco-friendly paper of the present invention has an excellent natural decomposition rate compared to the conventional polyethylene coated or laminated packaging paper bar, the environmental destruction and disposal is reduced when the landfill disposal after use.
  • the copolymer resin of the present invention was prepared by the Monomer Edition Process. Water, Reactant, Na2CO3, DBTDL (Di-n-butyltin dilaurate) and 10% of monomer were added to the reactor which can be controlled at 60 °C and the polymerization was started. When the temperature reached 80 °C, APS (Ammonium persulfate) After 10 minutes, the remaining monomer was added to the reactor at a uniform speed over 2 hours. The polymerization was completed over 2 hours.
  • the acrylic monomer is 40g of methyl methacrylate (Methyl methacrylate), 44g of butyl acrylate (Butyl Acrylate), 1.0g of methacrylate (Methacrylic Acid), 1.0g of hydroxyethyl methacrylate
  • the silicone monomer was prepared by varying the amount of the silicone monomer from 1% to 25% in order to control the ratio of acrylic and silicone.
  • ammonium persulfate (Ammonium persulfate), 0.4 g of DBTDL (Di-n-butyltin dilaurate) as a silicon polymerization catalyst, 1.0 g of ethoxylated nonyl phenol 10 U-of ethylene oxide (OP-10), SDS 0.8 g of sodium dodecyl sulfate, 0.2 g of Na 2 CO 3, and 120 g of deionized water were added to carry out polymerization. After completion of the polymerization was neutralized with ammonia water (Ammonia water), and the reacted material was filtered to prepare a copolymer resin.
  • Ammonia water ammonia water
  • a coating agent was prepared from a copolymer resin prepared according to the preparation method of Example 1.
  • Copolymer resin for preparing the coating agent was to be 95: 5 acrylic and silicone ratio.
  • Cup paper (Basic weight 350 g / m 2) to which PE applied in the cup forming market was applied was used as Comparative Example 1.
  • Cup paper or food paper coated by the method proposed in the present invention exhibited the physical properties suitable for food containers containing water and oil, such as water resistance, oil resistance, and heat sealability.
  • oil resistance was tested by the American Paper Pulp Technology Association Test Method (TAPPI T559cm-02), kit # 4 or more was achieved.
  • Water resistance was applied to the Cobb size test method (TAPPI T441), which is one of the common methods of the paper industry. When it was, water resistance of 10.0 g / m 2 or less was shown.
  • the heat adhesive strength was heat-sealed according to the sealing strength 5 using a heat sealing machine (Sambo Tech, SK-310) and peeled test 180 degrees with a peel tester, and the peel strength of the adhesive layer was 300gf / in or more. appear.
  • the test by the standard test method described above is insufficient to fully evaluate the mass production potential in the facilities of the conventional cup forming industry, and further confirmed the water resistance and oil resistance as follows.
  • the cup forming equipment using the thermocompression bonding method and the high frequency bonding method is molded using the cup paper of the present invention under normal production conditions, and after peeling off the adhesive surface, visually confirming the heat-sealed level, and then the aqueous solution in milk and soapy water.
  • the liquid contents mixed with the colored paints were contained for 48 hours to further confirm water resistance and oil resistance at room temperature with the naked eye.
  • Eco-friendliness which is another main object of the present invention, was determined based on the environmental mark certification criteria (EL606) to determine whether there were residual impurities and stickiness. As a result, it was confirmed that the alkali dissociation property can be collected after use in the paper industry and recycled as a raw material.
  • biodegradability was applied to KS M3100-1 mutatis mutandis, expressing the ratio of the change in biodegradability of the sample and the standard material for 180 days as a percentage. As a result, it was confirmed that aerobic biodegradability under composting conditions.
  • Test results of eco-friendly coated paper (Test Report No .: CT14-098926 and CT14-112663_M1) Test Items unit Reference value Test Methods Test result 60 °C elution 95 °C elution Residual PCBs mg / kg 5 or less Food utensils and containers Not detected Not detected Residual Lead (Pb) 100 or less (as total) One 0 Residual Cadmium (Cd) 0 Not detected Residual mercury (Hg) 0 0 Residual Hexavalent Chromium (Cr + 6) Not detected Not detected Elution Lead (Pb) mg / L 1 or less Not detected Not detected Elution Potassium Permanganate Consumption below 10 One One Elution methyl methacrylate 6 or less Not detected Not detected Elution evaporation residue 4% acetic acid 30 or less
  • Table 3 shows the food test results of the eco-friendly coated paper manufactured by the method according to Example 2 of the present invention. Specifically, it was confirmed that the coated paper of the present invention was within the food test standard of the Ministry of Food and Drug Safety under the 95 ° C elution condition assuming conditions such as the use of a microwave oven as well as the 60 ° C elution condition which is a universal test standard. .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wrappers (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne un agent de revêtement écologique pour un papier, ledit agent comprenant une résine copolymère qui se compose d'un polymère à base de silicone et d'un polymère à base acrylique. Le papier écologique recouvert avec l'agent de revêtement écologique selon la présente invention présente une bonne résistance à l'eau, une bonne résistance aux huiles et une bonne aptitude au thermoscellage ; est non toxique pour le corps humain sous la forme d'un emballage alimentaire ; peut être recyclé sous la forme d'un papier support ; et est biodégradable et, par conséquent, écologique.
PCT/KR2015/000383 2014-01-22 2015-01-14 Agent de revêtement écologique pour du papier et procédé permettant de produire du papier écologique à l'aide de ce dernier WO2015111866A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0007790 2014-01-22
KR1020140007790A KR101679110B1 (ko) 2014-01-22 2014-01-22 친환경 제지 코팅제 및 이를 이용한 친환경 제지의 제조방법

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107345377A (zh) * 2017-08-15 2017-11-14 广西点图包装有限公司 一种塑料瓶包装纸上光油及其制备方法
EP3301222A1 (fr) * 2016-09-30 2018-04-04 Repaper Inc Matériau de revêtement de papier ayant des propriétés écologiques et d'imperméabilité à l'eau et à l'huile et son procédé de fabrication
EP3851578A4 (fr) * 2018-09-14 2022-06-01 Daikin Industries, Ltd. Agent résistant à l'huile destiné au papier
US20220403600A1 (en) * 2021-06-22 2022-12-22 Kosko Paper Co., Ltd. Method for manufacturing eco-friendly antibacterial coated paper

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102644238B1 (ko) * 2021-11-16 2024-03-06 양승현 친환경 포장재
KR102601542B1 (ko) * 2023-06-26 2023-11-13 충남대학교산학협력단 기능성 보강지, 기능성 보강지의 제조방법, 기능성보강지를 이용한 포장지대 및 포장방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08260385A (ja) * 1995-03-13 1996-10-08 Sung-Ho Kim 生分解性紙製品およびその製造方法
KR20080056780A (ko) * 2006-12-19 2008-06-24 주식회사 디바텍 내수성과 고강도를 지닌 친환경 종이 포장재 및 그 제조방법
KR20130040680A (ko) * 2011-10-14 2013-04-24 주식회사 켈스타에이지피 친환경 수성 코팅제
JP2013155368A (ja) * 2012-01-06 2013-08-15 Nisshin Chem Ind Co Ltd 水系コーティング剤、防カビ剤及び抗菌剤

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08260385A (ja) * 1995-03-13 1996-10-08 Sung-Ho Kim 生分解性紙製品およびその製造方法
KR20080056780A (ko) * 2006-12-19 2008-06-24 주식회사 디바텍 내수성과 고강도를 지닌 친환경 종이 포장재 및 그 제조방법
KR20130040680A (ko) * 2011-10-14 2013-04-24 주식회사 켈스타에이지피 친환경 수성 코팅제
JP2013155368A (ja) * 2012-01-06 2013-08-15 Nisshin Chem Ind Co Ltd 水系コーティング剤、防カビ剤及び抗菌剤

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3301222A1 (fr) * 2016-09-30 2018-04-04 Repaper Inc Matériau de revêtement de papier ayant des propriétés écologiques et d'imperméabilité à l'eau et à l'huile et son procédé de fabrication
CN107345377A (zh) * 2017-08-15 2017-11-14 广西点图包装有限公司 一种塑料瓶包装纸上光油及其制备方法
EP3851578A4 (fr) * 2018-09-14 2022-06-01 Daikin Industries, Ltd. Agent résistant à l'huile destiné au papier
US11851822B2 (en) 2018-09-14 2023-12-26 Daikin Industries, Ltd. Oil-resistant agent for paper
US20220403600A1 (en) * 2021-06-22 2022-12-22 Kosko Paper Co., Ltd. Method for manufacturing eco-friendly antibacterial coated paper
US11807989B2 (en) * 2021-06-22 2023-11-07 Kosko Paper Co., Ltd. Method for manufacturing eco-friendly antibacterial coated paper

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KR101679110B1 (ko) 2016-12-07

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