NEEDLE-PUNCH FELT FABRIC OF NONWOVEN FABRIC, METHOD FOR PRODUCING THE SAME, AND FILTER MADE BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a needle-punch felt fabric which, for the purpose of being used as a filter medium, has enough hardness and shape-maintaining capability for self-support and is moldable.SOLUTION: There is provided a novel needle-punch felt fabric of a nonwoven fabric which is made of at least one low-melting point short fiber and at least one high-melting point short fiber of the same type or different types, and which has enough hardness and shape-maintaining capability for self-support and is moldable. The needle-punch felt fabric exhibits excellent pleat-forming capability, moldability and compressive strength. The needle-punch felt fabric has a weight of 500-2000 g/mand a Shore A hardness of 50-80HA. In addition, there are provided a method for producing the needle-punch felt fabric and a filter including the needle-punch felt fabric which is used as a filter medium of the filter. The filter medium does not need a support structure for independent self-support and maintains its shape.SELECTED DRAWING: Figure 2