| 发明名称 |
BIAXIALLY ORIENTED POLYESTER FILM |
| 摘要 |
PURPOSE:To obtain the title film excellent in both scratch and chipping resistances by biaxially orienting an unstretched film of a polyester containing specified amount of specified rutile TiO2 and specified inert particles by biaxial stretching. CONSTITUTION:An unstretched film of a polyester (e.g. polyethylene terephthalate) containing 0.2-3wt.% rutile TiO2 particles of a mean particle diameter d1 of 0.005-1mum and a shape factor of 0.6-1 and 0.01-0.2wt.% inert. particles (e.g. colloidal silica) of a mean particle diameter d2 (d1<d2) of 0.3-2mum and a shape factor ot 0.8-1 and a crystallization acceleration factor <=20 deg.C is biaxially oriented by biaxial stretching to obtain the title film desirably having a flatness of surface protrusions of 7-16. |
| 申请公布号 |
JPH02194029(A) |
申请公布日期 |
1990.07.31 |
| 申请号 |
JP19890014646 |
申请日期 |
1989.01.23 |
| 申请人 |
TORAY IND INC |
发明人 |
FUKUYAMA TAKEO;ABE KOICHI;NISHINO SATOSHI |
| 分类号 |
C08J5/18;B29C55/12;B29K67/00;B29L7/00;C08K3/00;C08K3/22;C08L67/00;C08L67/02 |
主分类号 |
C08J5/18 |
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