发明名称 |
Method for preparing a preform for making thin-walled, closed-ended, tubilar articles of thermoplastic elastomers. |
摘要 |
<p>A method to prepare a thermoplastic elastomeric preform for forming or drawing into a thin walled, closed-ended, tubular article having a wall thickness of between about 0.005 and 0.25 mm, is disclosed, the method comprising: (i) providing a tubular mold (5) having a longitudinal axis, a terminal end, and an opposite open end, said open end having a rim (4); (ii) heating a thermoplastic elastomer to a sufficient temperature to substantially eliminate the crystalline regions, whereby the viscosity and elasticity of said thermoplastic elastomer are substantially reduced, and shaping said thermoplastic elastomer to form a preform having two substantially coplanar opposing faces; (iii) cooling said thermoplastic elastomer whereby the viscosity and elasticity are recovered within a range that the preform can be drawn; and (iv) placing a face of said preform of thermoplastic elastomer on said rim. <IMAGE></p> |
申请公布号 |
EP0974445(B1) |
申请公布日期 |
2005.05.04 |
申请号 |
EP19990203462 |
申请日期 |
1994.11.25 |
申请人 |
JANSSEN-ORTHO INC. |
发明人 |
MILLER, ROBERT G.;MILLER, WILLIAM C.;TANKOVITZ, OSKAR T. |
分类号 |
A61F6/04;B29B11/06;B29B13/02;B29C35/02;B29C43/00;B29C43/02;B29C43/24;B29C51/04;B29C51/08;B29C51/10;B29C51/42;B29C67/00;B29C67/04;B29C71/00;B29C71/02;B29K21/00;B29L31/48;C08J5/18;(IPC1-7):B29C51/04;B29C55/22;B29C51/02 |
主分类号 |
A61F6/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|