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Degradable hot air non-woven fabric and preparation method thereof

A non-woven fabric, hot air technology, applied in non-woven fabrics, textiles and papermaking, fiber processing, etc., can solve the problems of non-biodegradability, pollution, white environment, etc. Simplified effect

Active Publication Date: 2018-09-07
北京京兰非织造布有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the degradable hot-air nonwoven fabric made of PLA fiber can solve the problem that the existing ordinary hot-air nonwoven fabric is not biodegradable and causes white pollution in the environment.

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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  • Degradable hot air non-woven fabric and preparation method thereof
  • Degradable hot air non-woven fabric and preparation method thereof
  • Degradable hot air non-woven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mechanical carding: 15 kg of PLA fibers with a skin-core structure are mechanically carded to form a fiber web; the skin and core layers of the PLA fibers are both PLA, and the melting point of the skin layer PLA is 130 ° C. The melting point of the core layer PLA is 160 ° C. ℃, the skin-to-core ratio is 1:1, and the fineness of the PLA fiber with the skin-to-core structure is 4.4dtex;

[0025] Hot-air bonding: under hot air at 134°C, the PLA fibers at the overlapping joints were melt-bonded to prepare a degradable air-through nonwoven fabric with a thickness of 2 mm.

Embodiment 2

[0027] Mechanical carding: Evenly mix 7.5 kg of PLA fibers with a skin-core structure and 7.5 kg of single-component PLA fibers, and then overlap each other to form a fiber web after mechanical carding; the melting point of the single-component PLA fibers is 160 ° C, and the skin-core structure The material of the skin layer and the core layer of the PLA fiber is PLA, the melting point of the skin layer PLA is 130°C, the melting point of the core layer PLA is 160°C, and the ratio of skin to core is 1:1. PLA fiber with skin-core structure and single-component PLA fiber The fineness is 4.4dtex;

[0028] Hot-air bonding: under hot air at 134°C, the PLA fibers at the overlapping joints were melt-bonded to prepare a degradable air-through nonwoven fabric with a thickness of 2 mm.

Embodiment 3

[0030] Pretreatment: Take 7.5kg of PLA fiber with skin-core structure and 7.5kg of single-component PLA fiber, irradiate with ultraviolet device for 25 minutes, then put PLA fiber into 35kg of treatment solution with a concentration of 4%, and blow nitrogen gas for 11 minutes to fully swell Finally, the excess treatment solution was poured out, and then irradiated with an ultraviolet device for 25 minutes, then boiled in distilled water for 2.5 hours, and then dried; wherein, the treatment solution was composed of poly(α-D-galactosyl-D-glucoside) and D - Prepared from mannitol, the mass ratio of poly(α-D-galactosyl-D-gluconoside) to D-mannitol is 1:3, and the solvent is water;

[0031] Mechanical carding: Evenly mix 7.5kg of pretreated PLA fibers with a sheath-core structure and 7.5kg of single-component PLA fibers, and overlap each other to form a fiber web after mechanical carding; the melting point of the single-component PLA fibers is 160°C The material of the skin layer a...

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 relates to a degradable hot air non-woven fabric, belongs to the field of hot air non-woven materials, and aims to solve the problem that existing common hot air non-woven fabrics are not biodegradable to cause white pollution in the environment. The material of the degradable hot air non-woven fabric is prepared by mixing a PLA fiber of a skin-core structure and a one-component PLAfiber, mechanically combing and mutually lapping to form a fiber web, and melting and bonding together the PLA fiber at the lapping portion through hot air. The prepared degradable hot air non-woven fabric has a soft and fluffy touch feeling and strong penetration and conductivity performance, is easily hydrolyzed in the soil, and is a green and environmentally friendly hot air non-woven fabric.

Description

technical field [0001] The invention relates to the field of air-through nonwoven materials, more specifically, it relates to a degradable air-through nonwoven fabric and a preparation method thereof. Background technique [0002] PLA fiber is a new type of biodegradable polylactic acid fiber, also commonly known as corn fiber. It is mainly made of corn, wheat, sugar beet and other starchy agricultural products, which are fermented to produce lactic acid, and then made by polycondensation and melt spinning. Clothing fabrics made of PLA fibers not only have the advantages of soft touch, wrinkle resistance and durability, comfortable wearing, no skin irritation, fast sweat absorption and quick drying, but also have silky luster and drape. Therefore, PLA fiber has become one of the most promising green environmental protection materials in the 21st century, and has attracted the attention of the world. [0003] Polylactic acid has natural antibacterial properties without addi...

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): D04H1/541D04H1/55D06M10/00D06M10/08D06M10/10
CPCD04H1/541D04H1/55D06M10/001D06M10/08D06M10/10
Inventor 李成群韩丽娜马计兰孟钊
Owner 北京京兰非织造布有限公司
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