Abstract: A composite barrier material is disclosed. The barrier material includes a first layer including a polymer resin in an amount of at least 40% by weight of the first layer and defining a first matrix, and a second layer integrally bonded to the first layer and including a polymer resin in an amount of at least 40% by weight of the second layer and defining a second matrix. The polymer resin of the first matrix has a different chemical structure than the polymer resin of the second matrix and the second layer has a cured hardness greater than the first layer. The shear bond strength of the barrier material is at least equal to the shear bond strength of a similar single matrix laminate comprising first and second layers of the same matrix material.

Abstract: An improved method for the manufacture of simulated marble and onyx products is disclosed. The process comprises the steps of applying a substantially clear coating to a mold, applying a first layer of a mixture of polyester resin and filler over the coating, forming readily visible striations in the first layer of resin and filler, applying a layer of glass fibers thereover, applying a second layer of polyester resin and filler over the layer of glass fibers and permitting the various layers to completely cure so as to form the final product.