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A kind of hot rolling mill roller and the nonwoven fabric prepared therefrom

A hot rolling mill and roller technology, applied in the field of non-woven fabrics, can solve the problems of short fiber fiber head stimulation, long production process, flat cloth surface, etc., and achieve the effects of large void ratio, high strength and good air permeability

Active Publication Date: 2020-12-25
SHANDONG DAWN SWT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component spunbonded nonwovens have the characteristics of no lint, high strength, high output, and low cost, but the cloth surface is too flat, especially in softness and bulkiness; hot air nonwovens have good bulkiness , soft touch, but there are defects such as long production process, high cost, low strength, easy fluffing, and potential short fiber fiber head irritation

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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  • A kind of hot rolling mill roller and the nonwoven fabric prepared therefrom
  • A kind of hot rolling mill roller and the nonwoven fabric prepared therefrom
  • A kind of hot rolling mill roller and the nonwoven fabric prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as Figure 1-6 As shown, a roll of a hot rolling mill, the pattern of the roll is composed of continuously arranged unit patterns; the unit patterns are continuously arranged at equal intervals along the circumferential direction of the outer surface of the roll, and are at an angle to the axial direction of the roll alpha 3 Continuously arranged at equal intervals along the oblique direction, where α 3 is 3.3 degrees.

[0026] The width of the unit pattern along the circumferential direction is W3, and the width of the unit pattern along the axial direction of the roller is W4; wherein, W3 is 3.40 mm, and W4 is 5.15 mm.

[0027] The unit pattern is composed of 4 equal-sized circular bulges distributed obliquely in parallelogram and obliquely distributed elliptical bulges A21 and elliptical bulges B22 of the same size; wherein elliptical bulge A21 is located at 4 Between the four circular protrusions, the oval protrusion B22 is located on the right side of the f...

Embodiment 2

[0034] Adopt the hot rolling mill roller of embodiment 1 to produce multi-layer composite, fluffy, 3D three-dimensional, soft nonwoven fabric, specifically comprise the following steps:

[0035] (1) Evenly mix the polypropylene with a melt index (MFR) of 25-50g / 10min and the softening additive with a melt index (MFR) of 30-120 / 10min, and suck it to the first spinning tower through a vacuum pump A component screw, through which heating, melting and extrusion are carried out, the temperature of the screw is 230-250°C, the rotation speed of the screw is 40-70rpm / min, the torque of the screw is 40-70N, and the melt is filtered into the melt The metering pump, melt filter and melt metering temperature are 220-240°C, and the working pressure of the metering pump is 50-70bar;

[0036] (2) Polypropylene with a melt index (MFR) of 25-50g / 10min, metallocene catalyzed propylene with a melt index (MFR) of 18-2000g / 10min, soft plastic with a melt index (MFR) of 600-1500g / 10min The additiv...

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Abstract

The invention discloses a hot mill roller and a nonwoven fabric manufactured thereby. The pattern of the roller is composed of continuously arranged unit patterns. The unit patterns are composed of aplurality of circular protrusions and elliptic protrusions which are arranged at prescribed intervals and / or predetermined angles. The unit patterns are circumferentially and continuously arranged atequal intervals in the circumferential direction of the outer surface of the roller, and are continuously arranged at equal intervals in an oblique direction having an angle of [alpha]3 with respect to the axial direction of the roller. The nonwoven fabric manufactured by the roller not only retains the characteristics of high strength, no lint slip, high output and good machining stability of existing one-component spunbonded nonwoven fabrics, but also achieves the fluffy and soft advantages of hot air bonded nonwoven fabrics, and greatly improves the touch softness and the experience comfortof disposable hygiene products .

Description

technical field [0001] The invention relates to the field of nonwoven fabrics, in particular to a roller of a hot rolling mill and the nonwoven fabric prepared therefrom. Background technique [0002] With the abundance of materials and the improvement of living standards, people have higher and higher requirements for the experience and comfort of disposable sanitary products such as baby diapers, adult incontinence products, and women's sanitary napkins, especially for soft touch and breathability of products. higher requirements. [0003] At present, the materials selected for disposable hygiene products are mainly single-component spunbonded hot-rolled bonded nonwovens and short fiber hot-air bonded nonwovens. One-component spunbonded nonwovens have the characteristics of no lint, high strength, high output, and low cost, but the cloth surface is too flat, especially in softness and bulkiness; hot air nonwovens have good bulkiness , Soft touch, but there are defects su...

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): D04H1/54D06C23/04
CPCD04H1/54D06C23/04
Inventor 慎张飞宋学丽王栋綦宝良宁新何宏伟
Owner SHANDONG DAWN SWT TECH CO LTD