PLASTIC TUBE PART THERMOPLASTIC PLASTIC WITH ACOUSTIC PROPERTIES BY ADJUSTING THE SURFACE WEIGHT OF PLASTIC PIPE PART AND DRAIN SYSTEM.

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/m2. 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/cm3. 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.