发明名称 |
Coextrudierte, heisssiegelbare und peelfähige Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung |
摘要 |
<p>Coextruded, transparent polyester film with a heat-sealable and peelable (at least against APET) outer layer (A) with a thickness of 1.7-6.0 microns, comprising (a) 70-97 wt% polyester and (b) 3-20 wt% polyester-incompatible (anti-PET) polymer, in which the polyester comprises 20-95 mol% aromatic dicarboxylic acid units and 5-80 mol% aliphatic diacid units. An independent claim is also included for a method for the production of this film by feeding the polymers for base layer (B), outer layer (A) and optionally another outer layer (C) into separate extruders, passing the melts through a multi-layer die to form flat, coextruded melt film, drawing off and solidifying the multilayer film over a cooling roller and optionally other rollers, stretching first in the machine direction (MD) at 60-130[deg]C (by a ratio of (2:1)-(5.5:1)) and then in the cross direction (TD) at 90-140[deg]C (by a ratio of (2.4:1)-(5.0:1)), and then heat fixing.</p> |
申请公布号 |
DE502004009639(D1) |
申请公布日期 |
2009.08.06 |
申请号 |
DE20045009639T |
申请日期 |
2004.04.15 |
申请人 |
MITSUBISHI POLYESTER FILM GMBH |
发明人 |
PEIFFER, HERBERT PROF.;HILKERT, GOTTFRIED DR.;KONRAD, MATTHIAS DR.;BENNETT, CYNTHIA DR.;BROEMMEL, PAUL |
分类号 |
B65D65/40;C08J5/18;B29C55/12;B29K67/00;B29L7/00;B29L9/00;B32B27/36;C08J5/04;C08L23/02;C08L25/08;C08L67/02;C08L77/00 |
主分类号 |
B65D65/40 |
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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