发明名称 |
Resyklingsprosess for et tverrbundet polymermateriale, især av elektriske kablers belegg |
摘要 |
<p>A process for dereticulating a cross-linked polymeric material, such as cross-linked polyethylene from scraps of electric cable coatings or from unused cable coatings through a mechanical mixing cycle, wherein the cross-linked material is subjected to a specific power per mass unit such as to induce shear stresses in the material itself and temperatures higher than pre-established minimum levels. At the end of this cycle the material goes back to a thermoplastic state that may be substantially regarded as thermoplastic; then, following granulation, cooling, drying and sacking, the material will be ready for re-use, either alone or mixed with virgin polymers, according to usual operating technologies for thermoplastic materials. Eventually, the mechanical mixing cycle may be preceeded by a preliminary crushing cycle of the cross-linked polymeric materials to be treated. Preferably, the mixing cycle is carried out in a twin-screw extruder with special screw and temperature profiles. <IMAGE></p> |
申请公布号 |
NO983675(D0) |
申请公布日期 |
1998.08.11 |
申请号 |
NO19980003675 |
申请日期 |
1998.08.11 |
申请人 |
ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE SA |
发明人 |
TRIBOULET, CARLO;PRIGENT, MADELEINE;DUCATEL, FRANCOISE |
分类号 |
B29B9/06;B29B13/10;B29B17/00;B29B17/04;B29C47/00;B29C47/40;B29K23/00;B29K105/26;C08J11/06;C08J11/12;C08L23/26;(IPC1-7):C08J |
主分类号 |
B29B9/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|