| 摘要 |
A process for making abrasion-resistant composites is disclosed. The process comprises the steps of providing a fibrous sheet containing a high density of relatively short staple fibers having a decitex under 6.6; needle-punching the staple layer and applying an adhesive containing layer; followed by the application of heat and pressure to the composite to form a thin consolidated and abrasion-resistant back-face layer on the composite. Preferably, the adhesive layer is penetrated by the needled fibers during the needling step and the product is shrunk in area by 20-50% before the consolidation step. Also optionally, the consolidated layer is abraded or perforated to create micro-pores that are permeable to gases and capable of containing liquids under low-to-moderate pressures. |
