| 发明名称 |
|
| 摘要 |
Mfr. of pipes and profiles from liq., foam-forming, reactive compsns., e.g. polyurethane-forming compsns., comprises continuously charging the reaction mixt. to a tool that is divided into at least 3 zones which are differentially temp. -controlled to correspond with the course of the reaction and the reate at which the intended profile is formed. The prod. having been shaped in the last zone is removed whilst maintaining the required foaming pressure. Used for mfr. of divers foamed profiles, especially pipes for drinking water supply and effluent and drainage pipes. Good resistance to external pressure and buckling under continuous load e.g. when laid underground. |
| 申请公布号 |
DE2654257(C3) |
申请公布日期 |
1979.05.10 |
| 申请号 |
DE19762654257 |
申请日期 |
1976.11.30 |
| 申请人 |
KLAUS ESSER GMBH & CO KG, 4040 NEUSS |
发明人 |
TEILNICHTNENNUNG BEANTRAGT;DALHOFF, WILLI, PROF. DR.-ING., 4048 GREVENBROICH;ESSER, RALF, ING.(GRAD.), 4000 DUESSELDORF |
| 分类号 |
B29C33/00;B29C33/60;B29C44/24;B29C44/28;B29C44/32;B29C44/34;B29C47/00;B29D23/00;B29D99/00 |
主分类号 |
B29C33/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
