Patent ID: 9556539
Date: 2017-01-31
CPC Classifications: B29C,D01F,Y10T

Claim:
1. A method for preparing a porous molded body comprising steps of: adding a shrinkable fiber to a base material for forming a porous molded body and kneading a mixture of the base material and the shrinkable fiber such that the shrinkable fiber is evenly dispersed in the base material; drying or biscuit-firing the resulting mixture of the base material and the shrinkable fiber so that pores are formed in the dried or biscuit-fired base material; final firing the dried or biscuit-fired mixture of the base material and the shrinkable fiber at a temperature of at least 700° C.; and wherein the shrinkable fiber comprises a thermoplastic resin and has a fiber diameter of 10 to 40 μm, a fiber length of 1 to 20 mm, and a dry-heat shrinkage percentage of at least 8% when subjected to a heat treatment at 80° C. for 5 minutes, the shrinkable fiber is a conjugate fiber that comprises a first component comprising a thermoplastic resin and a second component comprising a thermoplastic resin having a higher melting point than a melting point of the first component, and the base material is at least one material selected from the group consisting of clay, colored clay, alumina, and cement.