| 摘要 |
1486638 Malt scratch resistant film; laminates ALKOR GmbH and CIBA-GEIGY AG 27 Nov 1974 [27 Nov 1973] 51472/74 Headings B5B and B5M A malted scratch resistant, amorphous to crystalline, film or sheet of a film forming thermoplastic material contains 2-25% by weight, based on the weight of the polymer of glass spheres of from 0À5 to 75 Á the domes of the glass sphere project from the surface of the film and are covered completely by the film forming material, the film haying been stretched in a molten state. The film forming material is preferably a polyester or polyamide and the beads may be bonded to the thermoplastics material by an adhesion promoter and a further matting agent, e.g. micro mica may also be present. The films may be embossed. Laminates are formed by co-extruding the composition above with a further film forming thermoplastics material, the two are subsequently bonded and stretched in the molten state. The stretched film may be laminated on to another thermoplastics film web of PVC, polystyrene, chlorinated polyethylene, an ethylene/vinyl acetate copolymer or a copolymer of acrylonitile, butadiene, styrene and/or polyethylene. |
