| 摘要 |
The invention is concerned with the surface treatment of thermoplastic materials. Certain thermoplastic materials such as polypropylene are difficult to bond to like or dissimilar materials using conventional adhesives. In the invention, particles of dissimilar materials such as glass, PFA, sand, mica, talc, calcium carbonate or copper are embedded in the surface of the thermoplastic material (e.g. fibrillated polypropylene) to meet this problem. Thus, the thermoplastic material at a temperature near to but below the m.p. is bombarded with the particles (e.g. in a fluidised bed) which are at a temperature higher than the m.p. of the thermoplastic material. |
