发明名称 |
VERFAHREN ZUR BEHANDLUNG EINES THERMOPLASTISCHEN, SEMIKRISTALLINEN KUNSTSTOFFES |
摘要 |
<p>Process making use of semi-crystalline thermoplastic polymer comprises extruding thermoplastic and cooling it to temperature T1, where T1 > crystallisation temperature, Tc and < Tf + 5 degrees C, Tf = melting point of thermoplastic; stretching extrudate; allowing extrudate to relax at temperature T3, where Tc < T3 < Tf, for time = average relaxation time of thermoplastic; and soaking extrudate at temperature T4, where T4 < Tc. Also claimed is film made by said process.</p> |
申请公布号 |
AT210550(T) |
申请公布日期 |
2001.12.15 |
申请号 |
AT19970202889T |
申请日期 |
1997.09.19 |
申请人 |
SOLVAY (SOCIETE ANONYME) |
发明人 |
GILLIARD, PIERRE;DEHENNAU, CLAUDE;KARSTEN, PETRUS |
分类号 |
B29C55/00;(IPC1-7):B29C55/00 |
主分类号 |
B29C55/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|