| 摘要 |
The laminate according to the invention is a multiple layer structure and contains predominantly urethane-based polymeric materials in the cap and base layers thereof, with no significant amount of PVC. As such, under combustion conditions, the laminate releases substantially no harmful halogen-based bases, such as HCl or other toxic gases, and exhibits toxicity and smoke generation parameters well below acceptable industry standards. |
| 主权项 |
1. A laminate structure comprising:
a backing layer comprising, by weight, from about 20% to about 80% fiber reinforcement and from about 80% to about 20% thermoset or thermoplastic polymer selected from acrylic, polyvinylester, polyester, phenolic, epoxy, polysulfone, polyethersulfone and mixtures thereof; a base layer comprising polyurethane-based material combined with a copolymer of polyamide, polyether, polyester, polyether, polyimide, polyphenylene oxide, acrylic and polystyrene; and an adhesive layer disposed on a first surface of the base layer between the backing layer and the base layer; and a cap layer comprising polyurethane. |
