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Method and device for producing longitudinal arranged non-woven fabrics

A technology of longitudinal arrangement and non-woven fabrics, which is applied in the direction of melt spinning, non-woven fabrics, textiles and papermaking, etc. It can solve the problem that non-woven fabrics cannot be stretched longitudinally, and achieve the effect of excellent mechanical strength

Inactive Publication Date: 2006-01-18
NIPPON PETROCHEMICAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the spinning process, because the filaments are not well aligned longitudinally and cooled sufficiently, the nonwoven fabric cannot be stretched longitudinally, and it is difficult to stretch the nonwoven fabric at a high ratio to have high mechanical strength

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Method and device for producing longitudinal arranged non-woven fabrics
  • Method and device for producing longitudinal arranged non-woven fabrics
  • Method and device for producing longitudinal arranged non-woven fabrics

Examples

Experimental program
Comparison scheme
Effect test

example 1-1

[0111] In this instance, use the same figure 1 The same setup as shown in produces longitudinally stretched nonwovens. The meltblowing die had spinning nozzles with a nozzle diameter of 0.38 mm, a nozzle pitch of 1.0 mm and a spinning width of 500 mm. The silk is made of polyethylene terephthalic acid with an intrinsic viscosity of 0.57 dl / g. The meltblown die ejected filaments through the nozzle at a discharge rate of 0.33 g / min at a temperature of 320°C. At a temperature of 400°C, a high-speed air stream was sprayed at a rate of 2000 Nl / min to thin the discharged filaments. Spray water mist from the spray nozzle to cool the wire.

[0112] A gas flow vibrating mechanism of the type shown in Figures 4a and 4b is used such that the mechanism is spaced a minimum distance of 15 mm from the nozzle extension of the meltblown mold. The rotation rate of the airflow vibrating mechanism is measured, and the airflow vibrating mechanism is rotated so that the number of vibrations of ...

example 1-2

[0114] A longitudinally stretched nonwoven fabric was produced using the same apparatus as Inventive Example 1-1 under the same conditions as Inventive Example 1-1, except that the rotation rate of the airflow vibrating mechanism was changed. The rate of rotation of the airflow vibrating mechanism is chosen such that the number of vibrations, or frequency, of the wall surface is 11.7 Hz.

example 1-3

[0116] A longitudinally stretched nonwoven fabric was produced using the same apparatus as Inventive Example 1-1 under the same conditions as Inventive Example 1-1, except that the rotation rate of the airflow vibrating mechanism was changed. The rotation rate of the airflow vibrating mechanism is selected such that the vibration frequency, or frequency, of the wall surface of the airflow vibrating mechanism is 53.3 Hz.

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Abstract

An apparatus for manufacturing a nonwoven fabric has a spinning mechanism having a plurality of nozzles for extruding filaments, and a conveyor for collecting and delivering the extruded filaments. Between the spinning mechanism and the conveyor, there are disposed a high-speed air stream generating mechanism for generating a high-speed air stream to carry the filaments extruded from the nozzles to attenuate the filaments, and an air stream vibrating mechanism for periodically changing the direction of the high-speed air stream in the machine direction of the conveyor.

Description

technical field [0001] The present invention relates to a nonwoven fabric with longitudinally aligned filaments, a nonwoven fabric produced by longitudinally stretching such a nonwoven fabric with longitudinally aligned filaments, and a method and a device for producing such a nonwoven fabric. Background technique [0002] The nonwoven fabric of the present invention is excellent in mechanical properties and dimensional stability, and can be used as a raw material web of a nonwoven fabric having excellent strength in one direction and a vertically crossing nonwoven fabric. [0003] Known methods of producing nonwovens include spunbond, meltblown and spunlace. It is used to directly process spun yarn into non-woven fabric. In a broad sense, nonwovens produced by these methods are hereinafter referred to as spunbond nonwovens. Considering economy and large-scale production, these methods occupy a mainstream position in the production methods of non-woven fabrics. [0004] I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/04D01D5/08D04H3/02D04H3/16
CPCD04H3/16D04H3/04D04H3/033D04H3/02
Inventor 黑岩由喜栗原和彦矢部和宏仁井明梅岛伸一
Owner NIPPON PETROCHEMICAL CO LTD