Patent ID: 6114023
Filing Date: 2000-09-05
Classification: B41M,Y10T

Abstract:
In a printable microporous material having at least one printable surface, said microporous material comprising:(a) a matrix of substantially water-insoluble thermoplastic organic polymer comprising essentially linear ultrahigh molecular weight polyolefin;(b) finely divided, substantially water-insoluble, substantially non-color producing particulate filler comprising at least 50 percent by weight of siliceous particles, said filler being distributed throughout said matrix and constituting from 40 to 90 percent by weight, based on the total weight of said microporous material; and(c) a network of interconnecting pores communicating substantially throughout said microporous material;the improvement wherein said matrix includes blue colorant present in an amount sufficient to improve the readability of a printed image present on at least a portion of said printable surface of said microporous material.