发明名称 |
ROERDEL MED LJUDISOLERANDE EGENSKAPER GJORD AV PLAST SAMT ETT AVLOPPSROERSYSTEM MED SAODANA ROERDELAR. |
摘要 |
An injection moulded or extruded pipe part of thermoplastic material with sound-proofing properties having a weight per unit area of at least 8 kg/m<2>. The weight per unit area is adjusted by incorporating a filler in the plastic, preferably barium sulphate is used as such a filler. The density of the plastic pipe part is comprised between 1.4 and 2.7, preferably between 1.8 and 2.0 g/cm<3>. Suitable thermoplastic materials are PVC, polyolefins and ABS (acrylonitrile-butadiene-styrene) copolymer, particularly PVC or polypropylene. The plastic pipe part may also be a socket or a double sided socket. The pipe parts are particularly suitable for forming a waste pipe system. |
申请公布号 |
FI873213(A0) |
申请公布日期 |
1987.07.22 |
申请号 |
FI19870003213 |
申请日期 |
1987.07.22 |
申请人 |
WAVIN B.V. |
发明人 |
GUETTOUCHE, ALI;GRAAFMAN, JUERGEN |
分类号 |
F16L9/12;F16L9/21;F16L11/12;(IPC1-7):E03C/ |
主分类号 |
F16L9/12 |
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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