Abstract: There is disclosed a syntehtic plastic sheet material having differentially colored bands made by a method which utilizes an extrusion die block having a chamber in which is disposed a pair of sleeve members. The matrix resin is supplied to the die block chamber and the differentially colored matrix resin flows towards the discharge openings from the sleeve members and encapsulates the differentially colored resin issuing therefrom. The bands of differentially colored resin are deposited at two different depths within the matrix resin with the bands at one depth being disposed in a first angular orientation and the bands at the second depth being at another angular orientation so that the bands appear to intersect and provide a grid pattern.

Abstract: A synthetic plastic sheet material having a multicolor striated pattern therein is disclosed. The synthetic plastic sheet material has a multiplicity of bands of differentially colored resin disposed within a matrix resin and the bands have striations extending longitudinally of the sheet material. Some of the bands extend angularly to others of the bands so as to provide a grid pattern. The bands of one angular orientation are disposed at a depth within the matrix material which is different from that of the bands of the other angular orientation. A multiplicity of bands of each orientation are provided across the width of the sheet material and the bands have relatively narrow striations extending longitudinally of the sheet material.

Abstract: A method is disclosed for producing synthetic plastic sheet material having a multicolor striated pattern therein. The composite stream containing at least one band of differentially colored material in a matrix resin is passed through a perforated member having apertures therein separated by narrow solid segments which results in some interference with the lineal flow of the composite stream and effects striations of the differentially colored material within the matrix. A screen member supported in a perforated insert is specifically disclosed, and generally the bands of color extend diagonally across the sheet material.