发明名称 |
A method for crystallizing thermoplastic material. |
摘要 |
<p>Crystallizable mainly amorphous thermoplastic material is crystallized at a temperature exceeding the glass transition temperature of the material (13) by subjecting the material at the elevated temperature to compressive forces. By means of these the material thickness as a rule is reduced by at least 20 %, preferably by at least 40 %. In a device for the application of the procedure a plunger (20) and a mould (30) are moved to a minimum distance at which the thermoplastic material (13) located between the plunger and the mould part is subjected to compressive forces. The plunger and/or the mould part are provided with elements (29, 39) for the setting and maintaining of a temperature specified in advance of the surfaces (23, 33) with which the plunger and the mould part respectively abut against the thermoplastic material.</p> |
申请公布号 |
EP0282941(A2) |
申请公布日期 |
1988.09.21 |
申请号 |
EP19880103978 |
申请日期 |
1988.03.14 |
申请人 |
PLM AB |
发明人 |
OEHLENSCHLAEGER, ULLA;SORENSEN, ERLING;PEDERSEN, JAN RUNE |
分类号 |
B29C51/30;B29C35/02;B29C43/52;B29C49/64;B29C51/08;B29C51/42;B29C57/00;B29C71/00;B29C71/02;B29K67/00 |
主分类号 |
B29C51/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|