초록 ▼

A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam may be any polymeric material which is capable of being foamed. Distributed substantially evenly throughout the foam is a mat of long glass fibers arranged i

A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam may be any polymeric material which is capable of being foamed. Distributed substantially evenly throughout the foam is a mat of long glass fibers arranged in layers substantially parallel to the facing sheet. The process for producing this structural laminate comprises the steps of contacting a thin, substantially incompressible yet expansible mat of long glass fibers with a foam-forming mixture, positioning a facing sheet on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture therebetween through means for metering the amount of foam-forming mixture and causing it to fully penetrate between the fibers of said glass mat.

대표청구항 ▼

A structural laminate comprising: A. at least one planar facing sheet; B. a rigid foam attached to one surface of the facing sheet, the rigid foam formed from a foam-forming mixture; and C. glass fibers wherein: I. the glass fibers are distributed substantially evenly throughout the rigid foam, II.

A structural laminate comprising: A. at least one planar facing sheet; B. a rigid foam attached to one surface of the facing sheet, the rigid foam formed from a foam-forming mixture; and C. glass fibers wherein: I. the glass fibers are distributed substantially evenly throughout the rigid foam, II. the glass fibers are greater than one foot in length, III. the glass fibers are arranged in layers, IV. each layer of glass fibers is substantially parallel to the facing sheet, and V. the rigid foam completely fills the interstices between the glass fibers, the glass fibers being held in fixed relationship with respect to each other solely by the rigid foam. The structural laminate of claim 1 wherein the glass fibers in each layer are at an angle to the glass fibers in each next adjacent layer.