| 发明名称 |
INRICHTING VOOR HET AANBRENGEN VAN OPENINGEN IN EEN VAN DWARSE OF SPIRAALVORMIGE GOLVEN VOORZIENE KUNSTSTOFBUIS, ALSMEDE MET BEHULP DAARVAN VERKREGEN KUNSTSTOFBUIS. |
| 摘要 |
<p>A method for manufacturing corrugated plastic tube by subjecting an internally unsupported corrugated plastic tube, at a temperature between 30 DEG and 70 DEG C, to the simultaneous action of at least two punching members in one or in two corrugations.</p> |
| 申请公布号 |
NL157830(B) |
申请公布日期 |
1978.09.15 |
| 申请号 |
NL19730009844 |
申请日期 |
1973.07.16 |
| 申请人 |
WAVIN B.V., ZWOLLE. |
发明人 |
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| 分类号 |
B26F1/02;B26F1/00;B29C37/00;B29C53/00;(IPC1-7):29C17/08;02B11/00;29C17/10;29D23/00 |
主分类号 |
B26F1/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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