| 摘要 |
<p>1,179,043. Resin-impregnated glass fibre mat. FARBENFABRIKEN BAYER A.G. 22 March, 1967 [1 April, 1966], No. 13435/67. Heading B5N. In a process for the production of resinimpregnated glass fibre mats, glass fibres or filaments are introduced between two continuous covering foils, at least one of which is coated with a polyester resin composition, and the structure composed of the covering foils and an intermediate layer of glass fibres or filaments and resin composition is successively either calendered, kneaded with one or more rollers, and levelled or calendered and kneaded in one operation and then levelled. In one apparatus for carrying out the method, glass fibres are introduced between foils 1, coated with polyester resin composition by devices 2, e.g. coating knives, and the structure is fed between a driven drum 3 and a series of rollers 5, 6, 7, 8, 9. The roller 5 is a soft-surfaced compacting roller, the rollers 6 have projections of elastic material and fix the fibres, the rollers 7 have circumferential grooves and knead the structure, the roller 8 has axial grooves and levels the structure, and the roller 9 is a deflection roller for leading off the finished mat 10. Some of the rollers may be omitted and the levelling roller may be smooth. The kneading rollers are staggered so that the whole surface of the structure is treated. The glass fibres may be in the form of endless filaments and the apparatus may comprise a series of pairs fo rollers instead of the drum and rollers shown.</p> |
