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1. 发明授权

KR101217781B1 무연신 및 무배향 폴리비닐알코올 필름의 제조방법과 이를이용하여 제조되는 폴리비닐알코올 필름 및 편광판 有权
标题翻译：制备聚乙烯醇薄膜的方法，通过该方法制备的聚乙烯醇薄膜和包含聚乙烯醇薄膜的偏振片
公开(公告)号：KR101217781B1
公开(公告)日：2013-01-02
申请号：KR1020070044139
申请日：2007-05-07
申请人： 주식회사 엘지화학
发明人： 박준욱 , 최경식 , 이민희 , 김봉태 , 이충섭 , 오인석 , 홍유성 , 김학성
IPC分类号： C08J5/18 , B29D7/01 , G02B5/30
摘要： 본발명은무연신및 무배향폴리비닐알코올필름의제조방법과이를이용하여제조되는폴리비닐알코올필름및 편광판에관한것이다. 본발명의무연신및 무배향폴리비닐알코올필름은, 폴리비닐알코올수용액을티-다이를통해드럼표면에캐스팅한후 열풍을이용해 1차건조하여필름을제조하고, 상기필름을상기드럼표면으로부터박리하여다수의건조롤을이용해 2차건조하고, 열처리하는단계를포함하여진행되는것으로서, 상기 2차건조및 열처리시에필름의잔류수분율이 1% 감소할때마다필름이 0.01~0.4% 수축하도록상기건조롤의속도를단계적으로감속시키는것을특징으로한다. 본발명의폴리비닐알코올필름의제조방법을이용하여제조된폴리비닐알코올계필름은폭방향주름이발생하지않고, 장기보관시추가수축에의한형태변화가없으며, 연신성, 팽윤성및 염착특성이우수하여염착, 연신공정에서보다안정적인작업을가능하다특히, 대면적 LCD용광폭필름에서폭방향으로의광학균일성및 균일한연신이가능한장점이있다.

2. 发明公开

KR1020070122355A 표면 균일성이 우수한 폴리비닐알콜 편광필름의 제조방법 有权
标题翻译：具有良好表面均匀性的聚乙烯醇膜的制备方法，由其制备的聚乙烯醇膜和由聚乙烯醇膜制成的极性膜
公开(公告)号：KR1020070122355A
公开(公告)日：2007-12-31
申请号：KR1020070029431
申请日：2007-03-26
申请人： 주식회사 엘지화학
发明人： 오인석 , 김봉태 , 홍유성 , 박준욱 , 최경식 , 이충섭 , 심화섭 , 김학성
IPC分类号： C08J5/18 , C08F16/06 , G02B5/30
CPC分类号： C08J5/18 , C08J2329/04
摘要： A method for producing a polyvinyl alcohol film is provided to obtain a polyvinyl alcohol film having excellent surface uniformity by preventing formation of spots on the surface and realizing excellent dyeing capability and orientability, and to obtain a polarizer film having excellent polarizing characteristics over a large area. A method for producing a polyvinyl alcohol film comprises the steps of: (a) mixing polyvinyl alcohol, water, a plasticizer and a surfactant to provide an aqueous solution; (b) continuously casing the aqueous solution onto the surface of a casting drum(24) rotating at a desired speed and spaced apart from the ejection port of a T-die(21) by a predetermined distance, while sucking the steam discharged from the bottom surface of an ejected film(25) formed by the aqueous film right after the aqueous solution is ejected from the ejection port, by using a steam suction device(23) disposed in a region between the bottom surface of the ejected film opposite to the casting drum with an extension toward the ejection port and the surface of the casting drum; (c) drying the aqueous solution cast molded on the drum to provide a primary polyvinyl alcohol film; and (d) heat treating the primary film.
摘要翻译：提供聚乙烯醇薄膜的制造方法，通过防止表面发生斑点，实现优异的染色性和取向性，得到具有优异的表面均匀性的聚乙烯醇薄膜，得到在大面积上具有优异的偏振特性的偏振片。聚乙烯醇薄膜的制造方法包括以下步骤：（a）将聚乙烯醇，水，增塑剂和表面活性剂混合，得到水溶液; （b）将所述水溶液连续地包裹在以期望速度旋转并与T形模具（21）的喷射口隔开预定距离的流延鼓（24）的表面上，同时吸取从在水溶液从喷射口喷出之后由水性膜形成的喷射膜（25）的底面，通过使用设置在喷射膜的与该喷射膜相对的喷射膜的底表面之间的区域中的蒸汽吸引装置（23）流延鼓具有朝向喷射口和流延鼓的表面的延伸; （c）干燥铸造在滚筒上的水溶液以提供初级聚乙烯醇膜; 和（d）对初级膜进行热处理。

3. 发明授权

KR100886322B1 표면 균일성이 우수한 폴리비닐알콜 편광필름의 제조방법 有权
标题翻译：具有良好表面均匀性的聚乙烯醇偏光膜的制备方法
公开(公告)号：KR100886322B1
公开(公告)日：2009-03-04
申请号：KR1020070029431
申请日：2007-03-26
申请人： 주식회사 엘지화학
发明人： 오인석 , 김봉태 , 홍유성 , 박준욱 , 최경식 , 이충섭 , 심화섭 , 김학성
IPC分类号： C08J5/18 , C08F16/06 , G02B5/30
CPC分类号： C08J5/18 , C08J2329/04
摘要： 본 발명은 폴리비닐알콜 편광필름의 제조방법 및 이로부터 형성된 폴리비닐알콜 편광필름에 관한 것이다. 본 발명의 제조방법에 따르면, 티-다이의 토출구로부터 폴리비닐알콜 수용액을 캐스팅 드럼 표면에 연속적으로 캐스팅시, 토출구로부터 토출된 직후의 수용액이 형성하는 토출막의 캐스팅 드럼과 마주하는 하면 및 그 토출구 방향으로의 연장선과 상기 캐스팅 드럼의 표면 사이의 영역에 증기 흡입장치를 배치하므로서, 토출막의 하면으로부터 배출된 증기를 흡입한다. 본 발명에 따른 제조방법으로 제조된 폴리비닐알콜 필름은 표면에 얼룩 무늬가 생기지 않는 등 표면 균일성이 뛰어나므로 염착성 및 연신성 등의 가공성이 좋고, 이로부터 제조된 편광필름은 대면적에 걸쳐 편광특성이 우수하다.
폴리비닐알콜, 편광필름, 균일성, 염착성, 연신성, 편광도

4. 发明公开

KR1020080035728A 폴리비닐알코올계 필름의 제조방법, 이로부터 형성된폴리비닐알코올계 필름 및 이를 구비한 편광판 无效
标题翻译：聚乙烯醇薄膜的制造方法，与其形成的聚乙烯醇膜和具有该聚酰胺的极性膜
公开(公告)号：KR1020080035728A
公开(公告)日：2008-04-24
申请号：KR1020060102122
申请日：2006-10-20
申请人： 주식회사 엘지화학
发明人： 김학성 , 오인석 , 김봉태 , 심화섭 , 박준욱 , 최경식
IPC分类号： C08J5/18 , C08J7/04 , C08F16/06
摘要： A method for preparing a poly(vinyl alcohol)-based film, a PVA-based film prepared by the method, and a polarizer using the film are provided to prevent the problem due to the tension difference between the both interfaces of casting substrate/plasticizer layer and plasticizer/PVA film, thereby improving the processability without the damage of a PVA-based film. A method for preparing a poly(vinyl alcohol)-based film comprises the steps of dissolving a poly(vinyl alcohol)-based polymer, a plasticizer and a first nonionic surfactant and a second nonionic surfactant whose HLB difference is 3 or more in a solvent to prepare a poly(vinyl alcohol)-based polymer solution; solution casting the prepared poly(vinyl alcohol)-based polymer solution on a casting substrate; and removing the solvent from the obtained one. Preferably the first nonionic surfactant has an HLB of 1-12; and the second nonionic surfactant has an HLB of 8-20.
摘要翻译：提供了制备聚（乙烯醇）基膜，通过该方法制备的PVA类膜和使用该膜的偏振片的方法，以防止由于铸造基材/增塑剂两界面之间的张力差引起的问题层和增塑剂/ PVA膜，从而提高加工性能而不损坏PVA基膜。一种制备聚（乙烯醇）基膜的方法包括以下步骤：将溶于聚乙烯醇的聚合物，增塑剂和第一非离子表面活性剂以及HLB差为3以上的第二非离子表面活性剂溶解在溶剂制备聚（乙烯醇）基聚合物溶液; 溶液将制备的聚（乙烯醇）基聚合物溶液浇铸在浇铸基材上; 并从所得溶剂中除去溶剂。优选地，第一非离子表面活性剂的HLB为1-12; 第二非离子表面活性剂的HLB为8-20。

5. 发明公开

KR1020080098809A 무연신 및 무배향 폴리비닐알코올 필름의 제조방법과 이를이용하여 제조되는 폴리비닐알코올 필름 및 편광판 有权
标题翻译：制备聚乙烯醇薄膜的方法，通过该方法制备的聚乙烯醇薄膜和包含聚乙烯醇薄膜的偏光板
公开(公告)号：KR1020080098809A
公开(公告)日：2008-11-12
申请号：KR1020070044139
申请日：2007-05-07
申请人： 주식회사 엘지화학
发明人： 박준욱 , 최경식 , 이민희 , 김봉태 , 이충섭 , 오인석 , 홍유성 , 김학성
IPC分类号： C08J5/18 , B29D7/01 , G02B5/30
摘要： A polyvinyl alcohol film which is manufactured by using a manufacturing method of the polyvinyl alcohol film has no width direction wrinkle and no change of the shape by contraction in the long-term storage, is excellent in extensibility and swelling property, and can achieve optical homogeneity to the width direction and the uniform extension. A unoriented and non-alignment copolyvinylalcohol film is prepared by casting a polyvinyl alcohol aqueous solution on the surface of a drum through T-die and drying it by using hot air to obtain a film; peeling off the film from the surface of a drum; and drying it by using a plurality of dry rolls(121~128) and heat-treating it. The method of preparing unoriented and non-alignment copolyvinylalcohol film decelerates the speed of the dry roll gradually so that the film is contracted with 0.01~0.4% when the residual moisture rate of film is reduced by 1% in the second drying and thermal process.
摘要翻译：通过使用聚乙烯醇膜的制造方法制造的聚乙烯醇膜在长期保存中没有宽度方向皱纹，并且形状不变形，伸长性和溶胀性优异，可以实现光学均匀性到宽度方向和均匀延伸。通过T型模头将聚乙烯醇水溶液浇铸在滚筒表面上并通过热空气干燥得到薄膜，从而制备未取向的非取向共聚乙烯醇薄膜; 从滚筒的表面剥离薄膜; 并使用多个干燥辊（121〜128）进行干燥，进行热处理。制备无取向和非取向共聚乙烯醇膜的方法逐渐减慢干燥辊的速度，使得在第二次干燥和热处理中，当膜的残留水分率降低1％时，膜的收缩率为0.01〜0.4％。

6. 发明公开

KR1020080066320A 친수성 이형필름을 이용한 소수성 미세 성형물의 제조방법 无效
标题翻译：通过使用释放胶片制备精细制品的方法
公开(公告)号：KR1020080066320A
公开(公告)日：2008-07-16
申请号：KR1020070003580
申请日：2007-01-12
申请人： 주식회사 엘지화학
发明人： 김봉태 , 최경식 , 김학성 , 김윤현 , 이민희
IPC分类号： B29C33/68 , B29C33/62
CPC分类号： B29C33/62 , B29C33/42 , B29C33/68
摘要： A method of preparing fine articles by using a releasing film with a hydrophilic property is provided to separate the fine article from a mold easily using reaction force between hydrophilic material and hydrophobic material. A method of preparing fine articles(201) by using a releasing film(301) with a hydrophilic property includes a step of disposing the releasing film between a mold(100) and the fine article. The releasing film is deformed according to a shape formed on a pressing face of the mold and features relative hydrophilicity with regard to the fine article. The fine article and the releasing film have different surface tension of more than 25mN/m. The releasing film is made from polyvinyl alcohol. The mold is made of hydrophobic material.
摘要翻译：提供通过使用具有亲水性的脱模膜制备精细制品的方法，用亲水材料和疏水材料之间的反作用力容易地将细制品与模具分开。通过使用具有亲水性的脱模膜（301）制备精细制品（201）的方法包括将脱模膜设置在模具（100）和精细制品之间的步骤。剥离膜根据形成在模具的按压面上的形状而变形，相对于细制品具有相对亲水性。精细制品和脱模膜具有不同的表面张力大于25mN / m。脱模膜由聚乙烯醇制成。模具由疏水材料制成。

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