Anti-impact and high-weather-resistant PVC water supply and drainage pipe
The utility model relates to an anti-impact and high-weather-resistant PVC (polyvinyl chloride) water supply and drainage pipe, which comprises an inner hard PVC material layer and an outer soft PVC material layer, and the hard PVC material layer and the soft PVC material layer are co-extruded to fo...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to an anti-impact and high-weather-resistant PVC (polyvinyl chloride) water supply and drainage pipe, which comprises an inner hard PVC material layer and an outer soft PVC material layer, and the hard PVC material layer and the soft PVC material layer are co-extruded to form the PVC water supply and drainage pipe. The soft PVC material layer and the hard PVC material layer which are the same as the PVC base material are finally selected to be combined through screening testing, due to the fact that the soft PVC material layer and the hard PVC material layer are both PVC base materials and do not need an adhesive layer, the two-layer structure can form a good bonding effect through co-extrusion, the bonding problem is solved, the problems of cracking and the like caused by the fact that conventional exterior decoration materials ASA, PMMA and the like are adopted in the market to be combined with the hard PVC are solved, and the service life of the PVC base material is prolonged. The |
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