| 摘要 |
PURPOSE: An environment-friendly sewer pipe with high strength and heat resistance is provided to improve impact resistance by forming a drain pipe in inner and outer layers. CONSTITUTION: An environment-friendly sewer pipe with high strength and heat resistance comprises an inner layer(110) and an external layer(120). The inner layer is made of PP(Polypropylene) or PE(Polyethylene) resin. PVC(Polyvinyl Chloride) resin is used as the base material in order to form an external layer. The nano calcium carbonate of 100~115wt.% puts into in the PP or PE resin of 100wt.% of an inner layer. The nano calcium carbonate is removed by the heat shrinkage difference of PP or PE resin. The PP resin and PVC resin adhere closely to each other.
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