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Polylactic acid fiber and application thereof in adult incontinence nursing pad

A polylactic acid fiber and reaction technology, applied in the field of sanitary materials, can solve the problems of difficult control of molecular weight and molecular weight distribution, unsatisfactory strength, toughness and air permeability, and limited application of polylactic acid materials, etc. Enhanced strength and toughness, high elongation at break effect

Active Publication Date: 2022-02-15
千芝雅(湖北)卫生用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polylactic acid has the above advantages, the crystallization rate of polylactic acid is very slow, and the melt strength is low, which makes the molding process difficult; the glass transition temperature is low, and the heat resistance is poor; it is easy to degrade during melt processing, and the molecular weight and molecular weight Distribution is difficult to control; brittle and hard, poor toughness, lack of flexibility and elasticity, low impact strength
These shortcomings severely limit the application of PLA materials
The existing prior art discloses the preparation of adult incontinence care pads by polylactic acid fibers, such as patent 201210576102.9 discloses a completely degradable non-woven fabric material, specifically mixing polylactic acid bicomponent fibers and polylactic acid fibers, opening, Carding, and then through hot air penetration and hot rolling to make a fully degradable non-woven material, which has the advantages of good strength, not easy to drop fibers, fast penetration and moisture conduction, and can be completely degraded. It is an ideal material for making adult incontinence care pads. However, its strength, toughness, air permeability, etc. are still not ideal.

Method used

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  • Polylactic acid fiber and application thereof in adult incontinence nursing pad
  • Polylactic acid fiber and application thereof in adult incontinence nursing pad
  • Polylactic acid fiber and application thereof in adult incontinence nursing pad

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a polylactic acid fiber prepared by the following method:

[0053] Step 1, the polylactic acid of 100 weight parts (weight-average molecular weight is 150,000), the polyvinyl alcohol of 8 weight parts (polymerization degree is 1000, alcoholysis degree is 98%), the chitosan derivative of 4.2 weight parts, 1 2,6-di-tert-butyl-4-methylphenol in parts by weight is uniformly mixed to obtain a mixed material;

[0054] Step 2. Using the melt spinning method, the mixed material obtained in Step 1 is prepared into as-spun fibers, and the melting temperature is 210° C.;

[0055] Step 3: heat-drawing and heat-setting the as-spun fibers obtained in step 2 to obtain polylactic acid fibers, the temperature of heat-drawing is 95°C, the draw ratio is 3 times, and the temperature of heat-setting is 100°C.

[0056] Described chitosan derivative is prepared through the following method:

[0057] S1, 3 parts by weight of chitosan (the degree of deacetylation is 9...

Embodiment 2

[0061] This embodiment provides another kind of polylactic acid fiber, its preparation method is basically the same as that of Example 1, the only difference is that in the preparation process of chitosan derivatives, N-carboxylated chitosan, 4-(2 , 3-glycidoxy)indole was added in an amount of 3 parts by weight and 7.5 parts by weight, respectively.

Embodiment 3

[0063] This embodiment provides another kind of polylactic acid fiber, its preparation method is basically the same as that of Example 1, the only difference is that in the preparation process of chitosan derivatives, N-carboxylated chitosan, 4-(2 , 3-glycidoxy)indole was added in an amount of 3 parts by weight and 9 parts by weight, respectively.

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Abstract

The invention discloses a polylactic acid fiber and an application thereof in an adult incontinence nursing pad, and belongs to the technical field of hygienic materials. The polylactic acid fiber is specifically prepared by the steps: firstly, using dibenzoyl tartaric acid and 4-(2,3-epoxypropoxy)indole for modifying chitosan to obtain a chitosan derivative; blending and modifying polylactic acid by utilizing chitosan to prepare the polylactic acid fiber; and finally, mixing, opening, feeding cotton, carding, directly forming a net, hot-rolling and reinforcing to prepare a non-woven fabric material. The non-woven fabric material is used as a surface layer of the adult incontinence nursing pad, has the advantages of high strength, good toughness, high moisture permeability, soft hand feeling, fluffiness and air permeability, is high in degradation rate, and reduces pollution to environmental resources.

Description

technical field [0001] The invention belongs to the technical field of sanitary materials, and in particular relates to a polylactic acid fiber and its application in adult incontinence care pads. Background technique [0002] In recent years, the degree of population aging in China has been increasing. The elderly population aged 60 and over in the country exceeds 16% of the total population. The elderly population provides a huge potential consumer group for the adult incontinence products market in my country, making the consumption of adult incontinence nursing pads year by year. Growth, and because adult incontinence nursing pads are disposable hygiene products that are discarded after use, the annual consumption of adult incontinence nursing pads is huge. Behind the huge consumption is the problem of product disposal. Because adult incontinence pads expand after absorbing water, landfill disposal will occupy a lot of precious resources, and incineration will cause envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08D01F6/92D01F1/10D01D5/08D04H1/435D04H1/558A61F13/511D06M101/32
CPCC08B37/003D01F6/92D01F1/10D01D5/08D06M13/165D04H1/435D04H1/558A61F13/51121D06M2101/32
Inventor 吴跃
Owner 千芝雅(湖北)卫生用品有限公司
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