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Laminated nonwoven fabric for protection suits as well as production method and application of laminated nonwoven fabric

A manufacturing method and technology of non-woven fabrics, applied in protective clothing, protective equipment, chemical instruments and methods, etc., can solve the problems of heavy garments, low air permeability, and high-quality laminated fabrics, and achieve high oil resistance and air permeability High, high capture efficiency

Active Publication Date: 2019-07-23
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned protective clothing is used in equipment repair and maintenance, such as steel processing, automobile painting and other fields, and most of them are protective clothing non-woven fabrics made by Tyvek using flash evaporation technology. The temperature is very low, and it is very stuffy when worn, causing serious discomfort to people, especially when the temperature is high in summer, wearing such protective clothing may cause the risk of heat stroke; Ordinary protective clothing does not have the effect of oil resistance, so when wearing these protective clothing for work, it is easy to be infiltrated by oil, and then pollute the clothes inside
[0004] For example, Japanese Laid-Open Patent Publication No. 2008-188925 discloses a protective material. Although the material has the characteristics of dust protection and oil resistance, the diameter of the fibers constituting one layer of the protective material is too small, resulting in poor air permeability of the finished product, and The number of layers of this protective material is relatively large, the quality of the laminated fabric is very high, and the finished garment is very heavy, and it is very inconvenient for the operator to wear it.
[0005] Another example is disclosed in the Chinese published patent CN101358410 a kind of manufacture method of polypropylene multi-layer non-woven fabric for medical use. The collection efficiency of woven fabric is poor, so it does not play the role of dust protection, and its use is limited in some occasions with high dust

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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  • Laminated nonwoven fabric for protection suits as well as production method and application of laminated nonwoven fabric

Examples

Experimental program
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preparation example Construction

[0027] (1) Preparation of surface and inner layer non-woven fabrics: Spun-bonded non-woven fabrics are obtained through spun-bonding processing technology, and the prepared spun-bonded non-woven fabrics are respectively used as a layer of non-woven fabrics in the surface layer and the inner layer; The spunbonded non-woven fabric is made by heating and melting the high molecular polymer, extruding the melt from the spinning hole into the air through the extruder, and stretching the melt stream at a certain speed while cooling in the air. Thin and long (airflow or mechanical action), at this stage, the polymer melt is refined and solidified at the same time, forming fibers and then forming a network to obtain a spunbonded non-woven fabric;

[0028] (2) Waterproof and oil-proof processing of the surface non-woven fabric: the spunbonded non-woven fabric prepared in step (1) is subjected to a padding or spraying process to obtain a spunbonded non-woven fabric with waterproof and oil...

Embodiment 1

[0049] (1) Preparation of surface and inner layer non-woven fabrics: Spunbond / meltblown / spunbond nonwoven fabrics (SMS) for the surface layer and spunbond / spunbond nonwoven fabrics for the inner layer are prepared through spunbond and meltblown processes respectively. Cloth (SS), the grammage is 30g / m 2 The surface layer of non-woven fabric and the weight is 15g / m 2 The inner non-woven fabric;

[0050] (2) Waterproof and oil-proof processing of surface non-woven fabric: impregnate the spunbond / meltblown / spunbond non-woven fabric (SMS) prepared in step (1) in oil-repellent treatment agent: penetrating agent: bridging agent: water =20g / L: 6g / L: 15g / L: 59g / L in the mixed solution, after heat setting and drying treatment, the oil resistance level is 6, and the air permeability is 123cm 3 / cm 2 / s SMS non-woven fabric;

[0051] (3) Preparation of intermediate melt-blown non-woven fabric: Polypropylene fiber is used through melt-blown processing technology to obtain a grammage o...

Embodiment 2

[0054] (1) Preparation of surface and inner layer non-woven fabrics: Spunbond / meltblown / spunbond nonwoven fabrics (SMS) for the surface layer and spunbond / spunbond nonwoven fabrics for the inner layer are prepared through spunbond and meltblown processes respectively. Cloth (SS), the grammage is 30g / m 2 The surface layer of non-woven fabric and the weight is 15g / m 2 The inner non-woven fabric;

[0055] (2) Waterproof and oil-proof processing of surface non-woven fabric: impregnate the spunbond / meltblown / spunbond non-woven fabric (SMS) prepared in step (1) in oil-repellent treatment agent: penetrating agent: bridging agent: water =20g / L: 6g / L: 15g / L: 59g / L in the mixed solution, after heat setting and drying treatment, the oil resistance level is 6, and the air permeability is 123cm 3 / cm 2 / s SMS non-woven fabric;

[0056] (3) Preparation of intermediate melt-blown non-woven fabrics: Polypropylene fibers are used through melt-blown processing technology to obtain a grammag...

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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Abstract

The invention discloses laminated nonwoven fabric for protection suits as well as a production method and an application of the laminated nonwoven fabric. The laminated nonwoven fabric comprises fivelayers including a surface nonwoven fabric layer, an adhesive layer, a middle layer, an adhesive layer and an inner nonwoven fabric layer, wherein the middle layer is electret charged melt-blown nonwoven fabric accounting for 10wt%-40wt% of the laminated nonwoven fabric, and the oil prevention grade of the laminated nonwoven fabric is grade 3 or above. The laminated nonwoven fabric for protectionsuits has the characteristics of high trapping efficiency, high venting quality and high oil prevention grade and can be applied to fields of garbage treatment, steel and iron processing, nuclear power and clean rooms.

Description

technical field [0001] The invention relates to a layered non-woven fabric for protective clothing and its manufacturing method and application. Background technique [0002] With the rapid development of China's economy, people's self-protection awareness has become higher and higher. In some workplaces with high-risk chemicals, pesticides, oil pollution, etc., people will wear various types of protective clothing according to the working environment on site. In addition, in some places where high-concentration dust is operated, such as maintenance operations in waste incineration plants and nuclear power plants, people will also wear protective clothing with high-concentration dust protection performance. [0003] However, the above-mentioned protective clothing is used in equipment repair and maintenance, such as steel processing, automobile painting and other fields, and most of them are protective clothing non-woven fabrics made by Tyvek using flash evaporation technol...

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 Applications(China)
IPC IPC(8): B32B5/02B32B7/12B32B37/12
CPCB32B5/022B32B7/12B32B37/12B32B2250/20B32B2307/73B32B2307/724B32B2255/02B32B2571/00
Inventor 高冬燕吴蓓蓓
Owner TORAY FIBER RES INST(CHINA) CO LTD
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