Strong uniformly-stitched and bonded nonwoven fabric, production method and production device

Abstract

The invention discloses strong uniformly-stitched and bonded nonwoven fabric, a production method and a production device. The ratio of the vertical breaking strength and the horizontal breaking strength of the stitched and bonded nonwoven fabric is less than 1.2. The production method comprises the steps of: 1, adjusting the speed ratio of a stripping roller of a carding machine, so that fibers in a single-layer fiber net output by the carding machine are made approximately parallel; 2, receiving the single-layer fiber net by a cross lapping machine, and performing horizontal lapping and vertical delivery for the single-layer fiber net to form a second fiber net with crossing angles of internal fiber bands; 3, making the second fiber net pass through a group of clamping and pushing devices with physical interference on the second fiber net to eliminate the crossing angles of the fibers in the second fiber net and restore the parallel state of the fibers; and 4, delivering the second fiber net processed by the clamping and pushing devices into a stitch-bonding machine for stitch-bonding to obtain the stitched and bonded nonwoven fabric with the ratio of the vertical breaking strength and the horizontal breaking strength being less than 1.2. The ratio of the vertical breaking strength and the horizontal breaking strength can be controlled to be less than 1.2, and the problem of non-uniform vertical breaking strength and horizontal breaking strength can be solved.

Description

technical field [0001] The invention relates to the field of stitch-bonded non-woven fabrics, and more specifically relates to a production method and production equipment for strong and uniform stitch-bonded non-woven fabrics. Background technique [0002] Stitch-bonded nonwovens are an important category of nonwovens, which are mainly made by stitching fiber webs with additional yarns. In the entire product structure, the additional yarns are arranged longitudinally, which mainly provide the longitudinal breaking strength of the stitch-bonded nonwoven fabric, and the transverse breaking strength is mainly formed by the friction between fibers. The additional yarns are generally 75D-150D filaments , high strength. Therefore, the above-mentioned stitch-bonded non-woven fabrics have uneven longitudinal and transverse fracture strengths, and the longitudinal fracture strength is generally more than 1.2 times the transverse fracture strength. Eventually, the stitch-bonded nonw...

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned stitch-bonded non-woven fabrics have uneven longitudinal and transverse fracture strengths, and the longitudinal fracture strength is generally more than 1.2 times the transverse fracture strength. Eventually, the stitch-bonded nonwovens must be considered in the process of sheet cutting. consumes a lot

In addition, when stitch-bonded non-woven fabrics are used as shoe linings, since the vertical and horizontal fracture strength ratio is greater than 1.2, it will also cause the shoes to easily deform during wearing, which will affect product quality and brand reputation.

Images