| 摘要 |
1470844 Coated products MONSANTO CO 26 April 1974 [27 April 1973 (2)] 18378/74 Heading B2E [Also in Division B5] A composite suitable for use as an interlayer for laminated safety glass comprises at least two sheets of thermoplastic polymeric material combined together in face-to-face contact with at least one of the sheets being printed with an ink, e.g. with a colour gradient, on a side of the sheet that is in face-toface contact with another of said sheets, the thermoplastic polymeric material being polyvinyl butral, a polyurethane, a polyamide, poly (ethylene-vinyl acetate) or poly(ethylene-vinyl alcohol). The composite may be produced by extruding a layer of molten polyvinyl butral onto the printed surface of a moving web of polyvinyl butyral. |
