Caterpillar Inc.
FILTRATION MEDIA PACKS FORMED USING A DISSOLVABLE MATERIAL

Abstract:

A filter medium according includes a matrix including a first portion comprising a first material defining a plurality of spaces lacking the first material, and a second portion comprising a second material disposed in the plurality of spaces at least partially filling the spaces. The second material has a water solubility equal to or less than 30 mass parts of water necessary to dissolve 1 mass part of the second material and the first material has a water solubility greater than 30 mass parts of water necessary to dissolve 1 mass part of the first material.