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Polypropylene spunbond nonwoven fabric and preparation process for improving softness of polypropylene spunbond nonwoven fabric

A spun-bonded non-woven fabric and preparation technology, which is applied in the direction of non-woven fabrics, textiles and papermaking, etc., can solve the problems of water absorption and heat dissipation performance, the performance of preventing rewetting, and the reduction of overall strength, and achieve shrinkage. Low, improve the performance of preventing rewetting, and improve the overall strength

Active Publication Date: 2020-04-07
SHANDONG JUNFU NONWOVEN MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The non-woven fabric obtained by the existing softness preparation process of polypropylene spunbonded non-woven fabric: after hot-rolling, it has high hardness and low softness, which is easy to cause unnecessary abrasion; after hot-rolling, the water absorption and heat dissipation performance are reduced ;After hot rolling, the performance of preventing rewetting is reduced; after hot rolling, it is easy to shrink, the shrinkage rate is high, the three-dimensional effect is lacking, and it is not conducive to ventilation; after hot rolling, the overall strength is reduced, and it is easy to break during use

Method used

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  • Polypropylene spunbond nonwoven fabric and preparation process for improving softness of polypropylene spunbond nonwoven fabric

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Embodiment 1

[0031] Example 1 A preparation process for improving the softness of polypropylene spunbond nonwoven fabric

[0032] A kind of preparation technology that improves the softness of polypropylene spunbonded nonwoven fabric of the present invention, comprises the following steps:

[0033] (1) Preprocessing:

[0034] Add PP material, melt-blown material, functional masterbatch and white masterbatch into the mixing device, after automatic feeding, melt extrusion and melt filtration, then the raw materials are melt-measured according to requirements.

[0035] Wherein, the addition of described meltblown material accounts for 3% of total raw material;

[0036] The meltblown material is a high melt index PP meltblown material with a melt index of 800g / 10min.

[0037] (2) Die Spinning:

[0038] Take the raw materials after melt metering and carry out die spinning;

[0039] Die spinning process parameters are as follows:

[0040] Bellows pressure is 2900pa;

[0041] Fan speed rati...

Embodiment 2

[0053] Embodiment 2 A kind of preparation technology that improves the softness of polypropylene spunbonded nonwoven fabric

[0054] A kind of preparation technology that improves the softness of polypropylene spunbonded nonwoven fabric of the present invention, comprises the following steps:

[0055] (1) Pretreatment: Add PP material, melt-blown material, functional masterbatch and white masterbatch to the mixing device, after automatic feeding, melt extrusion and melt filtration, the raw materials are then melt-measured according to requirements.

[0056] Wherein, the addition of described meltblown material accounts for 5% of total raw material;

[0057] The meltblown material is a high melt index PP meltblown material with a melt index of 1200g / 10min.

[0058] (2) Die Spinning:

[0059] Take the raw materials after melt metering and carry out die spinning;

[0060] Die spinning process parameters are as follows:

[0061] The bellows pressure is 3300pa; the fan speed ra...

Embodiment 3

[0069] Embodiment 3 A kind of preparation technology that improves the softness of polypropylene spunbonded nonwoven fabric

[0070] A kind of preparation technology that improves the softness of polypropylene spunbonded nonwoven fabric of the present invention, comprises the following steps:

[0071] (1) Pretreatment: Add PP material, melt-blown material, functional masterbatch and white masterbatch to the mixing device, after automatic feeding, melt extrusion and melt filtration, the raw materials are then melt-measured according to requirements.

[0072] Wherein, the addition of described meltblown material accounts for 10% of total raw material;

[0073] The meltblown material is a high melt index PP meltblown material with a melt index of 1500g / 10min.

[0074] (2) Die Spinning:

[0075] Take the raw materials after melt metering and carry out die spinning;

[0076] Die spinning process parameters are as follows:

[0077] The bellows pressure is 4000pa; the fan speed r...

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Abstract

The invention provides polypropylene spunbond nonwoven fabric. According to the polypropylene spunbond nonwoven fabric, the softness is 3.41-3.43, the MD strength is 24.20-24.22 N / 5cm, and the CD strength is 10.12-10.93 N / 5cm; the invention further provides a preparation process for improving the softness of the polypropylene spunbond nonwoven fabric; the preparation process comprises pretreatment, die head spinning and hot rolling treatment, wherein during the hot rolling treatment, the mesh belt speed is 630-645 m / min and the hot rolling pressure is 80-90 daN / cm; the adding quantity of pretreated melt-blown materials is 3-10% of the gross raw materials, the melt-blown materials are high-melt-index PP melt-blown materials, and the melt index is 800-1500 g / 10 min; and during the die head spinning, the pressure of an air bellow is 2900-4000 pa, the temperature of the upper and lower cold air is 18-22 DEG C, and the single suction air volume is 1300 cubic meters per hour.

Description

technical field [0001] The invention belongs to the technical field of nonwoven fabrics, and relates to a preparation process of polypropylene spunbond nonwoven fabric, in particular to a polypropylene spunbond nonwoven fabric and a preparation technique for improving the softness of polypropylene spunbond nonwoven fabric. Background technique [0002] Non-woven fabric (English name: Non Woven Fabric or Nonwoven cloth), also known as non-woven fabric, is composed of oriented or random fibers. It is called cloth because of its appearance and certain properties. [0003] Non-woven fabrics have the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in color, low in price, and recyclable. For example, polypropylene (pp material) pellets are mostly used as raw materials, which are produced by high-temperature melting, spinning, laying, hot rolling, and coiling. [0004] Japanese Patent Ap...

Claims

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Application Information

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IPC IPC(8): D04H3/007D04H3/14
CPCD04H3/007D04H3/14
Inventor 宋凯赵鸿飞马向阳彭文忠常丽王忠忠
Owner SHANDONG JUNFU NONWOVEN MATERIALS
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