WATER-ABSORBENT COMPOSITE AND PROCESS FOR ITS PREPARATION

摘要

Composite comprises at least one high m.pt. synthetic resin layer and at least one low m.pt. synthetic resin layer. The composite is produced by forming a tape-like laminate, fibres or composite fibres having the low-melting synthetic resin at least party bared. Fibres or composite fibres are obtd by splitting the laminate. In the water-absorbent composite powdery polymeric water absorbent is adhered on the bare outside surface of the low-melting resin layer. The high-melting synthetic resin is isotactic polypropylene, high-density polyethylene, polyester, nylon 6 and nylon 66. The low-melting synthetic resin is low-density polyethylene, straight-chain low-density polyethylene, high density polyethylene, ethylene, acetylvinyl copolymer, ionomer, etc. The difference between the m.pts of the low-melting synthetic resin and the high-melting synthetic resin is at least 10 deg. C. The tape-like laminate can be two layers, three layers or five layers formed by combining the high-melting and low-melting synthe-tic resins. The tape-like laminate, fibres or composite fibres are heated at near the melting point of the low-melting synthetic resin and then brough into contact with powdery poly-meric water absorbent which adheres to them.