Method of making glass fiber reinforced laminate
Patent 4295907 Issued on October 20, 1981. Estimated Expiration Date: 
December 28, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 28, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3652356 3655483 3666591 3773638 3897295 Cured polyester product Laminates useful as packaging materials and container having alkaline fluid means Coating wood substrates Sheet molding material Patent #: 4214026 InventorsAssigneeApplicationNo. 06/107834 filed on 12/28/1979US Classes:264/112, Stratified or layered articles156/246, On temporary planar support (e.g., film casting)156/249, And assembly with different lamina156/324, Running or continuous webs of indefinite length264/135, Molding material against and uniting to the coated or impregnated workpiece264/216, Rubber or synthetic resin containing liquid264/261, Uniting spaced preforms, by introducing fluent material therebetween428/426, Of quartz or glass428/914, TRANSFER OR DECALCOMANIA522/107With ethylenic reactantExaminersPrimary: Bell, James J.International ClassesB29C 35/10 (20060101)B29C 70/04 (20060101) B29C 70/50 (20060101) B29C 35/08 (20060101) AbstractGlass fiber reinforced plastic laminates including randomly oriented glass fibers, embedded within unsaturated polyester resins, are provided over at least one surface thereof with a gel coat, essentially free of the glass fibers. The gel coat is formed from resins which are polymerizable in the presence of ultraviolet radiation. The gel coat is at least partially cured on a transparent carrier film by exposing gel coat resins to ultraviolet radiation. Thereafter randomly oriented glass fibers and unsaturated polyester resin syrup are applied onto the gel coat to form the resulting laminate. The gel coat is selected to provide superior weathering characteristics and resistance to deterioration from ultra-violet radiation exposure, e.g., sunlight, when compared to the corresponding properties of the unsaturated polyester resin in which the randomly oriented glass fibers are embedded. | |
