Methods of making nonwoven fabric

Abstract

A method for manufacturing nonwoven fabric involves forming a fiber web from multiple segmented composite fibers, and then applying a water jet with a pressure range of 150-300 bar to the fiber web at a distance of 10-40 mm. This causes the fiber web to split into multiple fibers, which are then intertwined to produce the nonwoven fabric. Through this method, nonwoven fabrics with a predetermined ratio of longitudinal to transverse strength can be produced.

Claims

1. A method for manufacturing a nonwoven fabric, comprising: a step (a) forming a fiber web from multiple split composite fibers; and a step (b) applying a water column with a pressure range of 150 to 300 bar to the fiber web at a distance of 10 to 40 mm, causing the fiber web to split into multiple fibers and then entangle with each other to obtain a nonwoven fabric.

2. The method for manufacturing nonwoven fabric as described in claim 1, wherein, Step (b) involves using the water jet to move at a speed of 10-50 m / min relative to the fiber web and applying it to the fiber web.

3. The method for manufacturing nonwoven fabric as described in claim 1, wherein, Step (a) involves constructing the fiber web from these segmented composite fibers with an average length ranging from 520 to 1000 mm.

4. The method for manufacturing nonwoven fabric as described in claim 1, wherein, Based on a total amount of 100wt% for each segmented composite fiber, each segmented composite fiber is obtained by melt extrusion molding of a multi-component material consisting of 40-90wt% polyamide and 10-60wt% polyester.

5. The method for manufacturing nonwoven fabric as described in claim 1, wherein, Based on a total amount of 100wt% for each segmented composite fiber, each segmented composite fiber is obtained by melt extrusion molding of a multi-component material consisting of 10-60wt% polyamide and 40-90wt% polyester.

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