KR930012872A

KR930012872A - Biaxially Oriented Polyester Film and Manufacturing Method Thereof

Info

Publication number: KR930012872A
Application number: KR1019910023364A
Authority: KR
Inventors: 김광태; 김태한; 이수형
Original assignee: 서주인; 제일합섬 주식회사
Priority date: 1991-12-18
Filing date: 1991-12-18
Publication date: 1993-07-21

Abstract

본 발명은 테레프탈산을 주로하는 디카르복실산과 에틸렌글리콜을 주로하는 글리콜과의 에스테르화 반응으로 부터 얻어진 생성물을 중축합 반응시켜 반복 단위의 80중량% 이상이 에틸렌테레프탈레이트로 된 폴리에스테르필름 제조방법에 있어서, 원자가 2가의 금속을 50∼700ppm 함유시키고 제막공정상의 연신비를 종방향, 횡방향 모두 3.0∼4.5배로하며 활제성분으로 평균입경이 0.03∼2.0㎛인 입자를 3종류이상 첨가하여 필름표면에 돌기를 형성시켜 제조한 하기의 조건을 만족하는 이축배향 폴리에스테르 필름 및 이의 제조방법에 관한 것이다.The present invention is a polycondensation reaction of a product obtained from an esterification reaction between dicarboxylic acid mainly containing terephthalic acid and glycol mainly containing ethylene glycol, and thus, a method for producing a polyester film in which at least 80% by weight of the repeating unit is ethylene terephthalate. 50 to 700 ppm of valence divalent metal, 3.0 to 4.5 times the draw ratio in the longitudinal and transverse directions in the film forming process, and three or more kinds of particles having an average particle diameter of 0.03 to 2.0 µm as lubricants are added to the film surface. It relates to a biaxially oriented polyester film and a method for producing the same satisfying the following conditions produced by forming a.

활제성분은 실리카, 카오린, 탄산칼슘, 이산화티탄, 알루미나, 장석, 탈크로구성된 군으로부터 선택된 것이며, 그 총함량은 0.08∼1.5중량%인 것이 바람직하다.The lubricant component is selected from the group consisting of silica, kaolin, calcium carbonate, titanium dioxide, alumina, feldspar, and talc, and the total content thereof is preferably 0.08 to 1.5% by weight.

0.01SRa0.040.01 SRa 0.04

1300SPc17001300 SPc 1700

0.5H1/H21.50.5 H1 / H2 1.5

여기에서, SRa는 필름의 중심선 평균조도(㎛), SPc는 단위면적당(㎟) 돌기의 갯수, H1은 높이 0.07㎛ 미만인 돌기의 수, H2은 높이 0.07㎛이상인 돌기의 수.Here, SRa is the average roughness (μm) of the center line of the film, SPc is the number of protrusions per unit area (mm 2), H1 is the number of protrusions less than 0.07 μm in height, and H2 is the number of protrusions at least 0.07 μm in height.

Description

Biaxially Oriented Polyester Film and Manufacturing Method Thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims

A biaxially oriented polyester film characterized by satisfying the following conditions.

0.01 SRa 0.04

1300 SPc 1700

0.5 H1 / H2 1.5

Here, SRa is the average roughness (μm) of the center line of the film, SPc is the number of protrusions per unit area (mm 2), H1 is the number of protrusions less than 0.07 μm in height, and H2 is the number of protrusions at least 0.07 μm in height.

Polycondensation reaction of the product obtained from the esterification reaction of the dicarboxylic acid which mainly contains terephthalic acid, and the glycol which mainly contains ethylene glycol, polycondensation reaction, and 80 weight% or more of a repeating unit made the polyester film which made ethylene terephthalate the valence 2 It contains 50-700ppm of metal and draw ratio of 3.0 ~ 4.5 times in both longitudinal and transverse directions in the film forming process, and adds three or more kinds of particles with an average particle diameter of 0.03 ~ 2.0㎛ as lubricants to form protrusions on the film surface. Characterized in the manufacture of biaxially oriented polyester film.

3. The biaxially oriented polyester film of claim 2, wherein the lubricant is selected from the group consisting of silica, kaolin, calcium carbonate, titanium dioxide, alumina, feldspar, and talc, and the total content thereof is 0.08 to 1.5% by weight. Manufacturing method.

※ Note: The disclosure is based on the initial application.