发明名称 |
PROCESS AND DEVICE FOR PRODUCING LARGE HOLLOW PLASTIC BODIES WITH MULTILAYERED WALLS |
摘要 |
A method for manufacturing large-volume hollow bodies of plastics material with multiple-layer walls. The apparatus defines an accumulation chamber and has a nozzle outlet. A plurality of material layers are joined into a multiple-layer plastic material melt within a tubular plunger which is movable in axial direction of the apparatus. The multiple-layer plastics material melt is conducted in a flow duct which widens in the shape of a funnel toward the accumulation chamber. The tubular plunger is forced by the melt to move in axial direction away from the nozzle outlet. The material melt is ejected as a multiple-layer extruded material by moving the tubular plunger in axial direction toward the nozzle outlet. |
申请公布号 |
WO8802689(A3) |
申请公布日期 |
1988.06.16 |
申请号 |
WO1987EP00606 |
申请日期 |
1987.10.15 |
申请人 |
RICHTER, GUENTHER |
发明人 |
RICHTER, GUENTHER |
分类号 |
B29C47/04;B29B11/10;B29C47/06;B29C47/20;B29C47/56;B29C49/22;(IPC1-7):B29C47/04 |
主分类号 |
B29C47/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|