发明名称 |
COEXTRUSION BIAXIALLY STRETCHED POLYESTER FILM, ITS MANUFACTURING METHOD, AND PACKAGING MATERIAL AND LID MATERIAL FOR TRAY COMPRISING COEXTRUSION BIAXIALLY STRETCHED POLYESTER FILM |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coextrusion biaxially stretched polyester film having good heat sealability and peelability, showing good adhesiveness with respect to another polymer layer, a metal layer, a printing layer and the like and suitably usable as a lid material for a tary comprising CPET or CPET/APET. <P>SOLUTION: In this coextrusion biaxially stretched polyester film composed of a base layer B and a heat-sealable outer layer A, the outer layer A can be peeled after heat-sealed to a CPET layer or a CPET layer/APET layer (1) and composed of a 80-99 wt.% of a polyester (a) and 1-10 wt.% of particles with an average particle size d<SB>50</SB>of 2.5-12 μm (2). The polyester (a) comprises a polyester having 12-89 mol% of an aromatic dicarboxylic acid unit and 11-88 mol% of an aliphatic dicarboxylic acid unit, and the ratio of the average particle size of the particles contained in the outer layer A and the thickness of the heat-sealable outer layer A is 1 or above and the base layer contains MXD 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
申请公布号 |
JP2005145070(A) |
申请公布日期 |
2005.06.09 |
申请号 |
JP20040326849 |
申请日期 |
2004.11.10 |
申请人 |
MITSUBISHI POLYESTER FILM GMBH |
发明人 |
PEIFFER HERBERT DR;JANSSENS BART;HILKERT GOTTFRIED;KONRAD MATTHIAS |
分类号 |
B65D53/00;B29C55/12;B29K67/00;B29L7/00;B29L9/00;B32B27/36;B65D65/40;C08J5/18;C08J7/04 |
主分类号 |
B65D53/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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