ADHESIVE COMPOSITIONS AND COMPOSITE MATERIALS

摘要

A composite material is formed from a flexible porous hardening foam (e.g. polyurethane) and an adhesive composition which sets to a water-resistant film and contains a water-absorbent filler (e.g. fumed silica) in an amount such that the film is water absorbent. The adhesive reinforces the foam while preserving its porosity and absorbency. The material is suitable for shoe insoles and handgrips. The adhesive may be primarily in a surface layer e.g. of cloth (14) applied to the foam (12); or the foam (22) may be saturated with the composition prior to curing.