KR100648430B1 - The method for improving the durability of the banknote paper - Google Patents
The method for improving the durability of the banknote paper Download PDFInfo
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- KR100648430B1 KR100648430B1 KR1020050129759A KR20050129759A KR100648430B1 KR 100648430 B1 KR100648430 B1 KR 100648430B1 KR 1020050129759 A KR1020050129759 A KR 1020050129759A KR 20050129759 A KR20050129759 A KR 20050129759A KR 100648430 B1 KR100648430 B1 KR 100648430B1
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- urea resin
- modified urea
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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
- 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
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/25—Cellulose
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/31—Gums
- D21H17/32—Guar or other polygalactomannan gum
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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
- D21H19/16—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising curable or polymerisable compounds
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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
- 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
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
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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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
Abstract
Description
본 발명은 내구성이 강화된 보안 용지 및 이의 제조방법으로, 보다 상세하게는 습윤지력증강제와 더불어 카르복시 메틸 셀룰로오스(carboxy methyl cellulose, 이하 CMC라 칭함) 또는 구아 검(Guar gum)을 첨가하여 원지를 제조하고 폴리비닐알코올, 변형 요소수지 및 촉매를 포함하는 함침액를 사용함으로써 섬유-고분자간에 강인한 결합구조를 형성하여 물에 젖은 상태에서 강한 외력이 가해져도 물리적 변형이 없는 내구성이 강화된 은행권 용지의 제조 방법에 관한 것이다.The present invention is a durable security paper and a method for manufacturing the same, in more detail, by adding a carboxy methyl cellulose (hereinafter referred to as CMC) or guar gum (Guar gum) in addition to the wet strength enhancer And a method of producing a durable banknote paper without physical deformation even when strong external force is applied in the wet state by forming a strong bonding structure between the fiber and the polymer by using an impregnation solution containing polyvinyl alcohol, a modified urea resin and a catalyst. It is about.
은행권 등의 보안 용지의 유통 수명을 향상시키기 위한 방법으로, 스위스나 네덜란드에서는 은행권 표면에 바니쉬를 도포하여 보안 용지의 유통 수명을 10 내지 30% 정도 향상시켰으며, 호주에서는 은행권을 플라스틱 재질의 폴리머로 제조함으로써 종이 은행권 보다 4배 정도의 유통 수명을 향상시켰다.As a way to improve the shelf life of security papers such as banknotes, in Switzerland and the Netherlands, varnish is applied to the surface of banknotes to improve the shelf life of security papers by 10-30% .In Australia, banknotes are made of plastic polymer. By manufacturing, the shelf life of four times the paper banknote is improved.
일반적인 종이 은행권의 유통 수명을 향상시키기 위한 종래 기술은 다음과 같다. The prior art for improving the shelf life of a general paper banknote is as follows.
미국 특허 제5,660,919호에는 인쇄 적성과 유통내구성이 우수한 용지를 제조하는 방법이 개시되어 있는데, 벤토나이트나 클레이 등의 무기 충전제와 수용성의 폴리우레탄, 아크릴레이트 공중합체, 선택적으로 카르복실화된 S/B(styrene-butadiene) 공중합체 등의 엘라스토머계 바인더(elastomeric binder)를 포함하는 코팅액을 적어도 용지의 한 면에 처리하는 방법이 개시되어 있다. 이 방법은 고품질의 인쇄와 더불어 유통내구성이 향상된 보안 용지를 제조함에 있어서, 옵셋인쇄/요판인쇄 등의 인쇄 적성과 유통내구성을 동시에 부여하기 위한 표면처리와 함침액의 조성과 관련된다. 상기 미국 특허에서 개시된 바인더는 단독으로 사용되거나 일반 제지용 바인더와 혼합 사용이 가능하다. 도공 방식은 리버스 롤(reverse roll), 챔피온(champion), 빌-블레이드(bill-blade), 에어나이프 코터 등이 가능하며, 도공량은 건조시 기준으로 약 10g/m2 이다. 상기 미국 특허는 안료가 존재하기 때문에 보안 용지 내에 존재하는 은화나 은선 등의 보안 요소가 불투명해질 수 있다는 문제점이 있다. U.S. Patent No. 5,660,919 discloses a process for producing paper with excellent printability and durability, including inorganic fillers such as bentonite and clay, water-soluble polyurethanes, acrylate copolymers, and optionally carboxylated S / B. A method of treating at least one side of a paper with a coating liquid containing an elastomeric binder such as a (styrene-butadiene) copolymer is disclosed. This method relates to the surface treatment and the composition of the impregnating liquid for simultaneously providing print aptitude and distribution durability such as offset printing and intaglio printing in the production of security papers with improved quality of printing as well as high quality printing. The binder disclosed in the US patent may be used alone or in combination with a general paper binder. Coating methods can be reverse roll, champion, bill-blade, air knife coater, etc. The coating amount is about 10 g / m 2 at the time of drying. Since the US patent has a pigment, there is a problem that security elements such as silver or silver wire present in the security paper may be opaque.
대한민국 특허 공개 공보 제1998-7002528호에는 투명한 코팅액을 용지의 양면에 처리하여 인열성, 내오염성, 물리적 저항성 및 내세탁성이 요구되는 보안 용지의 내구성을 향상시키는 방법이 기술되어 있다. Korean Patent Laid-Open Publication No. 1998-7002528 describes a method of improving the durability of a security paper that requires tearing, staining resistance, physical resistance and washing resistance by treating transparent coating liquid on both sides of the paper.
대한민국 특허 공개 공보 제2001-0071507호는 은행권 유통 수명을 결정하는 주된 요인은 다공성에 기인하는 은행권 표면에서의 오염이라 설명하고, 이의 개선을 위해 폴리아미드 래커, 아크릴레이트 또는 아크릴레이트 함량이 높은 바인더를 단독 또는 가교제와 더불어 도포함으로써 투명 보호층을 표면에 형성하여 내오염도를 향상시킨 기술이 개시되어 있다. 투명 보호층의 처리는 초지기 내에서 용지를 만드는 과정 중에 이루어지거나, 용지를 만든 후 인쇄 방식이나 코팅 방식으로 이루어진다. Korean Patent Laid-Open Publication No. 2001-0071507 describes that the main factor determining the life span of banknotes is contamination on the surface of banknotes due to porosity, and for the improvement thereof, polyamide lacquer, acrylate or binder with high acrylate content is used. The technique which improved the contamination resistance by forming a transparent protective layer on the surface by apply | coating alone or with a crosslinking agent is disclosed. The transparent protective layer is processed during the paper making process in the paper machine, or by printing or coating after making the paper.
상기에서 언급된 보안 용지(은행권)의 유통 수명 향상과 관련된 선행 기술들은, 보안 용지의 물리적 저항성 보다는 표면에서의 내오염성을 향상시키고자 하는 내용이 대부분이다. 그러나, 보안 용지의 유통 수명 향상을 위해서는 단순히 표면에서의 내오염성이 향상되어야 할 뿐만 아니라 보안 용지의 구김, 마찰 및 찢어짐 등의 훼손에 대한 물리적 저항성이 기본적으로 요구된다. Prior arts related to improving the shelf life of the security paper (bank note) mentioned above are mostly intended to improve the stain resistance on the surface rather than the physical resistance of the security paper. However, in order to improve the shelf life of the security paper, not only the stain resistance on the surface should be improved, but also the physical resistance to damage such as wrinkles, friction, and tearing of the security paper is basically required.
이러한 문제점을 해결하기 위한 것으로 국내 특허출원 제 10-2004-0107208에서는 종래의 표면 처리액인 폴리비닐알코올 수용액에 변형 요소수지 및 촉매를 첨가한 새로운 표면 처리액을 사용하여 표면처리공정을 실시함으로써 추가적 코팅 설비 없이 인쇄 적성의 저하 없이 내구성이 강화된 보안 용지를 제조할 수 있는 보안 용지의 제조방법을 개시하고 있으나 습식 내구성 평가방법에 있어 미흡한 문제점을 가지고 있다.In order to solve this problem, Korean Patent Application No. 10-2004-0107208 provides a surface treatment process using a new surface treatment solution in which a modified urea resin and a catalyst are added to a polyvinyl alcohol aqueous solution, which is a conventional surface treatment solution. It discloses a method for manufacturing a security paper that can manufacture a security paper with a durable without deterioration of printability without coating facilities, but has a problem in the wet durability evaluation method.
본 발명의 목적은 상기와 같은 문제점을 해결하기 위한 것으로서, 원지 제조시 습윤지력증강제와 더불어 CMC나 구아 검(Guar gum)을 사용함으로써 최종 용지의 습윤강도를 향상시켜 내구성이 보다 향상된 은행권 용지를 제조하는 방법을 제공하 고자 한다. An object of the present invention is to solve the above problems, by using a CMC or guar gum in addition to the wet paper strength enhancer when manufacturing the paper to improve the wet strength of the final paper to produce a banknote paper with improved durability To provide a way to do it.
본 발명의 다른 목적은 상기 방법으로 제조된 보안 용지를 제공하는 것이다.Another object of the present invention is to provide a security paper produced by the above method.
상기 본 발명의 목적을 달성하기 위한 내구성이 강화된 은행권 용지의 제조방법은, 습윤지력증강제와 더불어 CMC 또는 구아 검(Guar Gum)을 첨가하여 원지를 제조하는 단계, 원지를 폴리비닐알코올, 변형 요소수지 및 촉매를 포함하는 함침액으로 처리하는 단계, 상기 함침액으로 처리된 원지를 경화액으로 처리하는 단계, 및 상기 경화액으로 처리된 원지를 건조하는 단계를 포함하는 것을 특징으로 한다. In order to achieve the above object of the present invention, a method of manufacturing a durable banknote paper is prepared by adding CMC or guar gum along with a wet strength enhancer to prepare a base paper, a polyvinyl alcohol, and a modified element. Treatment with an impregnation solution comprising a resin and a catalyst, treating the base paper treated with the impregnation liquid with a curing liquid, and drying the base paper treated with the curing liquid.
습윤지력증강제로는 헤라클레스 인코포레이티드(Hercules Incorporated)의 키멘 557H(Kymene 557H)를 사용하였고, 바람직하게는, 키멘 557H는 지료의 전건 섬유량에 대해서 0.5 내지 1.2 중량%의 범위로 사용한다. 음이온성을 나타내는 CMC 또는 구아 검은 한국워솔의 2% 용액상태 제품을 사용하였다. 바람직하게는, 본 발명에서 사용되는 CMC 또는 구아 검은 지료의 전건 섬유량에 대하여 0.1 내지 0.6 범위의 중량%로 사용한다. As the wet strength enhancer, Hercules Incorporated's Kymene 557H (Kymene 557H) was used, and preferably, Kymene 557H was used in the range of 0.5 to 1.2% by weight relative to the total dry fiber content of the paper. A 2% solution of CMC or guar gum was used. Preferably, the CMC or guar gum used in the present invention is used in weight percent in the range of 0.1 to 0.6 based on the total amount of dry fibers.
광의의 표면처리 공정은 협의의 함침 공정과 경화 공정으로 나누어진다. 상기 협의의 함침 공정에서 사용되는 표면 처리액은 폴리비닐알코올, 변형 요소수지 및 촉매를 포함한다. Broad surface treatment process is divided into narrow impregnation process and hardening process. The surface treatment liquid used in the above-mentioned impregnation process includes polyvinyl alcohol, modified urea resins, and a catalyst.
본 발명에서 사용되는 폴리비닐알코올의 함량은 전체 표면 처리액을 기준으로 2 내지 7 중량%의 범위이다. The content of polyvinyl alcohol used in the present invention is in the range of 2 to 7% by weight based on the total surface treatment liquid.
본 발명에서 사용되는 변형 요소수지는 유리 포름알데히드를 생성시키지 않는 변형된 요소수지라면 그 종류에 제한 없이 본 발명에서 사용될 수 있다. 예를 들면, BASF사의 디메틸 디하이드록시 에틸렌 우레아(dimethyl dihydroxy ethylene urea, 상표명 Fixapret NF) 등이 있다. The modified urea resin used in the present invention may be used in the present invention without any limitation as long as it is a modified urea resin that does not produce free formaldehyde. For example, there is dimethyl dihydroxy ethylene urea (trade name Fixapret NF) manufactured by BASF.
전체 표면 처리액 내에서의 변형 요소수지의 함량은 1 내지 10 중량% 이고, 바람직하게는 3 내지 5 중량%이다. 변형 요소수지의 함량은 상기 범위 내에서 내구성 증진효과가 탁월하다. The content of the modified urea resin in the total surface treatment liquid is 1 to 10% by weight, preferably 3 to 5% by weight. The content of the modified urea resin is excellent in durability enhancement effect within the above range.
본 발명에서는 NH4HSO4 등과 같은 암모늄염, HOCH2CH2NH2HCL 등과 같은 아민염, MgCl2나 ZnCl2와 같은 금속염 등이 촉매로 사용될 수 있다. 상기 촉매들은 용해되어서 자체적으로 또는 열을 받아서 산성을 나타내는 특징이 있다. 상기 촉매의 함량은 상기 변형 요소수지의 중량에 대해서 10 내지 20 증량% 이다.In the present invention, NH 4 HSO 4 Ammonium salts such as, amine salts such as HOCH 2 CH 2 NH 2 HCL and the like, metal salts such as MgCl 2 or ZnCl 2 may be used as a catalyst. The catalysts are characterized in that they dissolve and appear acidic on their own or by heat. The content of the catalyst is 10 to 20% by weight based on the weight of the modified urea resin.
원지를 표면 처리하는데 사용되는 상기 표면 처리액의 온도는 50 내지 60 ℃ 이 바람직하다. 상기 온도 범위에서 표면 처리액은 용지내로 용이하게 침투할 수 있다. As for the temperature of the said surface treatment liquid used for surface treatment of a base paper, 50-60 degreeC is preferable. In the above temperature range, the surface treatment liquid can easily penetrate into the paper.
원지에 대한 표면 처리 공정이 끝난 후, 원지를 경화액으로 처리한다.After the surface treatment step for the base paper is finished, the base paper is treated with a curing liquid.
경화액으로는 1 내지 3 중량%의 붕사 또는 붕산액 등이 있다. 경화 공정을 실시하는 이유는 인장강도 등의 강도 향상을 위하고, 용지가 물에 젖었을 때 표면 처리액이 녹아 나오는 것을 방지하기 위함이다.Examples of the curing liquid include borax or boric acid solution of 1 to 3% by weight. The reason for carrying out the curing step is to improve strength such as tensile strength and to prevent the surface treatment liquid from melting when the paper is wet with water.
경화액 처리 공정 후, 원지를 건조한다. 건조 온도는 100℃ 이상, 건조 시 간은 3분 이상이 바람직하다.After the curing liquid treatment step, the base paper is dried. The drying temperature is preferably 100 ° C. or higher and the drying time of 3 minutes or more.
이하, 하기 실시예를 통해 본 발명을 좀더 구체적으로 설명하지만 이에 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited thereto.
원지 제조Papermaking
실시예Example 1 One
증해 표백된 면섬유를 3.5 중량%의 농도로 28°SR 까지 고해기로 고해한 후, 55°SR까지 리파이너(refiner)로 리파이닝하여 지료를 제조하였다. CMC를 지료의 전건 섬유량에 대하여 0.5% 첨가한 후 10초간 교반시키고 습윤지력증강제인 키멘 557H를 1.0% 첨가한 후 압착탈수하고 건조하여 원지를 제조하였다. The bleached cotton fiber was beaten with a beaker at a concentration of 3.5% by weight up to 28 ° SR, and then refined with a refiner to 55 ° SR to prepare a stock. After adding CMC to 0.5% of the total amount of fiber in the paper, the mixture was stirred for 10 seconds, and 1.0% of the wet strength enhancer, Chimen 557H, was added, followed by compression dehydration and drying to prepare a base paper.
실시예Example 2 2
실시예 1과 동일하나 CMC 대신 구아 검을 0.5% 첨가하여 원지를 제조하였다.Same as Example 1, but the base paper was prepared by adding 0.5% guar gum instead of CMC.
비교예Comparative example 1 One
실시예 1과 동일하게 지료를 처리한 후 습윤지력증강제인 키멘 557H를 0.7% 첨가하여 원지를 제조하였다.After treating the paper in the same manner as in Example 1, 0.7% of the wet strength enhancer, Chimen 557H, was added to prepare a base paper.
표면 처리Surface treatment
실시예Example 3 3
6 중량%로 용해된 폴리비닐알코올 수용액에, 변형 요소수지(BASF사, Fixapret NF) 5 중량%, MgCl2 금속염 촉매(BASF사, Condensol N) 0.5 중량%를 첨가 하여 표면 처리액을 제조하였다. 상기 표면 처리액을 65 ± 3℃로 유지하면서 상기 실시예 1에서 만들어진 원지를 상기 표면 처리액에 10 초간 함침한 후 압착 프레스를 이용하여 과량을 제거하였다. 이 후, 상기 원지를 5 중량% 농도의 붕사액에 5 초간 함침한 후 압착 프레스를 이용하여 과량을 제거하였다. 도포량은 건량기준으로 약 6g/m2이 되도록 하였다. 이렇게 처리된 원지를 실린더 건조기를 이용하여 표면 온도 100℃에서 3분간 건조하였다.5% by weight of modified urea resin (BASF, Fixapret NF) in a polyvinyl alcohol aqueous solution dissolved at 6% by weight, MgCl 2 A surface treatment solution was prepared by adding 0.5 wt% of a metal salt catalyst (BASF, Condensol N). While maintaining the surface treatment solution at 65 ± 3 ° C., the base paper made in Example 1 was impregnated into the surface treatment solution for 10 seconds, and then the excess was removed by using a compression press. Thereafter, the base paper was impregnated in a borax solution having a concentration of 5% by weight for 5 seconds, and then the excess was removed by using a compression press. The coating amount was set to about 6 g / m 2 on a dry basis. The treated base was dried for 3 minutes at a surface temperature of 100 ° C. using a cylinder dryer.
실시예Example 4 4
실시예 3과 동일하나 실시예 2에서 제조한 원지를 사용하여 표면처리를 수행하였다. The same treatment as in Example 3 was carried out using the base paper prepared in Example 2.
비교예Comparative example 2 2
6 중량%로 용해된 폴리비닐알코올 수용액을 65 ± 3℃로 유지하면서 상기 비교예 1에서 만들어진 원지를 상기 폴리비닐알코올 수용액에 10 초간 함침한 후 압착프레스를 이용하여 과량을 제거하였다. 상기 원지를 5 중량% 의 붕사액에 5 초간 함침한 후 압착프레스를 이용하여 과량을 제거하였다. 도포량은 건량기준으로 약 6g/m2이 되도록 하였다. 이렇게 처리된 원지를 실린더 건조기를 이용하여 표면 온도 100℃에서 3분간 건조하였다.While maintaining the polyvinyl alcohol aqueous solution dissolved at 6% by weight at 65 ± 3 ℃ impregnated the base paper made in Comparative Example 1 in the polyvinyl alcohol aqueous solution for 10 seconds, the excess was removed using a compression press. The base paper was impregnated in 5 wt% borax solution for 5 seconds and then excess was removed using a press. The coating amount was set to about 6 g / m 2 on a dry basis. The treated base was dried for 3 minutes at a surface temperature of 100 ° C. using a cylinder dryer.
비교예Comparative example 3 3
실시예 3과 동일하나 비교예 1에서 제조된 원지를 사용하여 표면처리를 수행하였다. Same as Example 3, but the surface treatment was carried out using the base paper prepared in Comparative Example 1.
상기와 같이 제조된 보안 용지를 아래의 방법을 이용하여 평가하였다.The security paper produced as above was evaluated using the following method.
용지 물성Paper property
상기 실시예 및 비교예에서 제조된 보안 용지를 20℃, 65%( 상대습도)의 조건에서 24시간 조습처리한 후 KS M 7014 및 KS M 7068에 의거하여 인장강도와 내절도를 각각 측정하였다. The security papers prepared in Examples and Comparative Examples were subjected to a humidity treatment for 24 hours at 20 ° C. and 65% ( relative humidity) , and then tensile strength and tear strength were measured based on KS M 7014 and KS M 7068, respectively.
습식 내구성Wet durability
습식 내구성의 평가에는 3차원 혼합기(TURBULA)를 사용하였다. 시료는 은행권 소절 크기로 잘라 구김시험장치를 이용하여 4회 구김처리한 후 직육면체 형태의 목재 시편거치대에 밀착시켜 장착하여 준비하였다. 오염물은 인공땀, 색 파우더 및 그리스(Grease)로 이루어진다. 2L의 통에 측정하고자 하는 시료, 표준이 되는 시료, 2개의 시편거치대 총 4개를 넣고, 지름 2cm의 세라믹 비드 25개를 넣고, 마지막으로 오염물을 넣어 67rpm 조건에서 5, 10, 15 및 20분 오염실험을 실시하였다. 본 평가에서는 시편이 파괴되지 않고 견디는 시간을 측정하였다.Three-dimensional mixer (TURBULA) was used for the evaluation of wet durability. Samples were prepared by cutting them into bank-sized measures and then wrinkling them four times using a creasing test apparatus and then mounting them in close contact with a wooden specimen holder in the form of a cuboid. Contaminants consist of artificial sweat, color powder and grease. Put a total of four samples, a standard sample, two specimen holders in a 2L tube, 25 ceramic beads of 2cm in diameter, and finally add contaminants for 5, 10, 15 and 20 minutes at 67 rpm. Pollution experiments were conducted. In this evaluation, the time taken for the specimen to survive without breaking was measured.
상기 표 1의 물성 측정 결과를 보면, 건인장강도와 내절도에 있어서는 실시예 3, 실시예 4에 따른 보안 용지가 비교예 2 및 비교예 3에 따른 보안 용지와 큰 차이를 나타내지 않음을 알 수 있다. 그러나, 습인장강도에 있어서는 실시예 3 및 실시예 4에 따른 보안 용지가 비교예 2에 따른 보안용지에 비해서 월등히 우수한 것으로 나타났다. 즉, 원지 제조시 습윤지력증강제와 더불어 CMC 또는 구아 검을 적용한 것이 습윤강도를 향상시켰고 변형요소수지가 포함된 함침액을 처리함으로써 섬유간 구조를 강인하게 유지한 것에 원인이 있는 것으로 판단된다. In the physical property measurement results of Table 1, it can be seen that the security paper according to Examples 3 and 4 does not show a significant difference from the security paper according to Comparative Examples 2 and 3 in terms of dry tensile strength and abrasion resistance. have. However, in the wet tensile strength, the security paper according to Example 3 and Example 4 was found to be superior to the security paper according to Comparative Example 2. That is, the application of CMC or guar gum in addition to the wet strength enhancer in the manufacture of the base paper improved the wet strength, and it is believed that the reason for maintaining the inter-fiber structure was strong by treating the impregnation solution containing the modified urea resin.
습식 내구성 평가에 있어서도 실시예 3 및 실시예 4에 따른 보안 용지는 오염시간 20분에서도 파괴되지 않고 견딘 반면, 비교예 2에 따른 보안용지는 15분 까지는 견뎠으나 20분에서는 파괴되었고 비교예 1에 따른 보안 용지는 5분 까지는 견뎠으나 이후에는 파괴되는 결과를 보였다. In the wet durability evaluation, the security paper according to Example 3 and Example 4 was not destroyed even in 20 minutes of contamination time, whereas the security paper according to Comparative Example 2 was tolerated up to 15 minutes but was destroyed in 20 minutes. The security paper withstood up to 5 minutes but was destroyed afterwards.
이상 살펴본 바와 같이, 본 발명은 원지제조시 습윤지력증강제와 더불어 CMC 또는 구아 검을 첨가하여 원지를 제조하고 폴리비닐알코올, 변형 요소수지, 촉매를 포함하는 함침액으로 표면처리공정을 수행함으로써 부가적인 코팅 설비나 특수약품의 코팅 없이 내구성이 보다 강화된 보안 용지를 제조할 수 있다.As described above, the present invention is prepared by adding a CMC or guar gum with a wet strength enhancer during the manufacture of the base paper and additional coating by performing a surface treatment process with an impregnation solution containing polyvinyl alcohol, modified urea resin, catalyst It is possible to manufacture more durable security paper without coating of equipment or special medicine.
이상에서는 본 발명의 특정의 바람직한 실시예에 대하여 설명하였으나, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 특허청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이고, 그와 같은 변형은 청구 범위 기재의 범위 내에 있게 된다.While specific embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments, and the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such modifications are within the scope of the claims.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101331407B1 (en) | 2012-04-19 | 2013-11-21 | 한국조폐공사 | Winkle-Resistive Security Paper and Method for Manufacturing the same |
| KR20190074845A (en) | 2017-12-20 | 2019-06-28 | 한국조폐공사 | Manufacturing method for specialty paper |
| KR20200074476A (en) * | 2018-12-17 | 2020-06-25 | 한국조폐공사 | High durability paper containing nano-cellulose and manufacturing method thereof |
| KR102477429B1 (en) * | 2022-10-07 | 2022-12-14 | 주식회사 태산케미칼 | Method of manufacturing eco-friendly water-soluble film composition using PVA and post-processing method of packaging paper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990070577A (en) * | 1998-02-21 | 1999-09-15 | 조병묵 | Manufacturing method of high strength waterproof cardboard box for cucumber packaging |
| US6179962B1 (en) | 1997-12-31 | 2001-01-30 | Hercules Incorporated | Paper having improved strength characteristics and process for making same |
| US6241853B1 (en) | 1998-12-10 | 2001-06-05 | Kimberly Clark Worldwide, Inc. | High wet and dry strength paper product |
| KR20020068862A (en) * | 2001-02-23 | 2002-08-28 | 변유량 | Cationic mixed polymer, producing method thereof, and additive for paper making containing it |
| KR20050062095A (en) * | 2003-12-19 | 2005-06-23 | 한국조폐공사 | Method for manufacturing highly reinforced anti-soiling banknote paper |
-
2005
- 2005-12-26 KR KR1020050129759A patent/KR100648430B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179962B1 (en) | 1997-12-31 | 2001-01-30 | Hercules Incorporated | Paper having improved strength characteristics and process for making same |
| KR19990070577A (en) * | 1998-02-21 | 1999-09-15 | 조병묵 | Manufacturing method of high strength waterproof cardboard box for cucumber packaging |
| US6241853B1 (en) | 1998-12-10 | 2001-06-05 | Kimberly Clark Worldwide, Inc. | High wet and dry strength paper product |
| KR20020068862A (en) * | 2001-02-23 | 2002-08-28 | 변유량 | Cationic mixed polymer, producing method thereof, and additive for paper making containing it |
| KR20050062095A (en) * | 2003-12-19 | 2005-06-23 | 한국조폐공사 | Method for manufacturing highly reinforced anti-soiling banknote paper |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101331407B1 (en) | 2012-04-19 | 2013-11-21 | 한국조폐공사 | Winkle-Resistive Security Paper and Method for Manufacturing the same |
| KR20190074845A (en) | 2017-12-20 | 2019-06-28 | 한국조폐공사 | Manufacturing method for specialty paper |
| KR20200074476A (en) * | 2018-12-17 | 2020-06-25 | 한국조폐공사 | High durability paper containing nano-cellulose and manufacturing method thereof |
| KR102176248B1 (en) * | 2018-12-17 | 2020-11-09 | 한국조폐공사 | High durability paper containing nano-cellulose and manufacturing method thereof |
| KR102477429B1 (en) * | 2022-10-07 | 2022-12-14 | 주식회사 태산케미칼 | Method of manufacturing eco-friendly water-soluble film composition using PVA and post-processing method of packaging paper |
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