Polylactic acid nano-fiber non-woven fabric surface layer and degradable sanitary towel prepared from same

A technology of polylactic acid fibers and nanofibers, applied in sanitary napkins, biological packaging, layered products, etc., can solve problems such as poor dryness, achieve fast infiltration speed, delicate touch, and prolong the use time

Active Publication Date: 2021-04-09
苏州谷原生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Nasi Princess produced by Shenzhen Quanmian Times Technology Co., Ltd. is made of pure cotton non-woven fabric surface layer. However, due to the very good hygroscopicity of cotton fibers, the dryness is poo

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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  • Polylactic acid nano-fiber non-woven fabric surface layer and degradable sanitary towel prepared from same
  • Polylactic acid nano-fiber non-woven fabric surface layer and degradable sanitary towel prepared from same
  • Polylactic acid nano-fiber non-woven fabric surface layer and degradable sanitary towel prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] combine figure 1 , to describe this embodiment in detail. The surface layer of a polylactic acid nanofiber non-woven fabric involved in this embodiment is composed of upper and lower layers of non-woven fabrics, the upper non-woven fabric is a polylactic acid electrospun non-woven fabric layer, and the lower non-woven fabric is a polylactic acid fiber hot air Non-woven fabric layer; the upper layer of non-woven fabric and the lower layer of non-woven fabric are self-adhesively integrated, and then ultrasonically punched to form a surface layer of polylactic acid nanofiber non-woven fabric.

[0043] Preparation of polylactic acid fiber air-through nonwoven fabric with double-layer web

[0044] Coarse denier polylactic acid fiber and polylactic acid bicomponent fiber are used, and the two fibers are weighed and fed in a certain proportion, opened and mixed, carded, cross-laid and drawn to form the lower layer of fiber web. Polylactic acid fiber and polylactic acid two-c...

Embodiment 2

[0067]The surface layer of a polylactic acid nanofiber non-woven fabric involved in this embodiment is composed of upper and lower layers of non-woven fabrics, the upper non-woven fabric is a polylactic acid electrospun non-woven fabric layer, and the lower non-woven fabric is a polylactic acid fiber hot air Non-woven fabric layer; the upper layer of non-woven fabric and the lower layer of non-woven fabric are self-adhesively integrated, and then ultrasonically punched to form a surface layer of polylactic acid nanofiber non-woven fabric.

[0068] Preparation of polylactic acid fiber air-through nonwoven fabric with double-layer web

[0069] Coarse denier polylactic acid fiber and polylactic acid bicomponent fiber are used, and the two fibers are weighed and fed in a certain proportion, opened and mixed, carded, cross-laid and drawn to form the lower layer of fiber web. Polylactic acid fiber and polylactic acid two-component fiber, the two fibers are weighed and fed in a certa...

Embodiment 3

[0091] The surface layer of a polylactic acid nanofiber non-woven fabric involved in this embodiment is composed of upper and lower layers of non-woven fabrics, the upper non-woven fabric is a polylactic acid electrospun non-woven fabric layer, and the lower non-woven fabric is a polylactic acid fiber hot air Non-woven fabric layer; the upper layer of non-woven fabric and the lower layer of non-woven fabric are self-adhesively integrated, and then ultrasonically punched to form a surface layer of polylactic acid nanofiber non-woven fabric.

[0092] Preparation of polylactic acid fiber air-through nonwoven fabric with double-layer web

[0093] Coarse denier polylactic acid fiber and polylactic acid bicomponent fiber are used, and the two fibers are weighed and fed in a certain proportion, opened and mixed, carded, cross-laid and drawn to form the lower layer of fiber web. Polylactic acid fiber and polylactic acid two-component fiber, the two fibers are weighed and fed in a cert...

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 a polylactic acid nano-fiber non-woven fabric surface layer and a degradable sanitary towel prepared from the same. The surface layer is composed of an upper non-woven fabric layer and a lower non-woven fabric layer, wherein the upper non-woven fabric layer is a polylactic acid electrostatic spinning non-woven fabric layer, and the lower non-woven fabric layer is a polylactic acid fiber hot-air non-woven fabric layer; and the upper non-woven fabric layer and the lower non-woven fabric layer are self-adhered into a whole, and then the polylactic acid nanofiber non-woven fabric surface layer is prepared through ultrasonic punching. According to the invention, the upper layer of the polylactic acid fiber hot-air fiber net adopts a fiber net with fibers arranged in a longitudinal direction, so longitudinal flow guiding of liquid is facilitated; fibers in the lower layer of the polylactic acid fiber hot air fiber net layer are evenly distributed in a longitudinal direction and a transverse direction, so liquid in an absorption core body can be further prevented from back seepage; and a polylactic acid-containing biomass breathable film can rapidly guide out hot air while inhibiting bacteria and removing peculiar smell, so a human body can be kept in a healthy state at any time. The surface layer, a middle absorption core layer and an anti-seepage bottom film of the sanitary towel are all made of completely degradable materials, so the manufactured sanitary towel is completely degradable.

Description

technical field [0001] The invention relates to the technical field of production of female sanitary napkins, in particular to a surface layer of polylactic acid nanofiber non-woven fabric and a degradable sanitary napkin prepared therefrom. Background technique [0002] With the acceleration of the world's industrialization process, the discharge of industrial and domestic waste is increasing, which has seriously affected the environment on which human beings live. Among them, "white" waste such as waste paper, plastic and disposable sanitary products has become the largest due to its huge quantity and refractory degradation. One of the sources of pollution. Among them, waste paper can be recycled, and disposable sanitary products such as sanitary napkins, diapers, and panty liners are the most used and most difficult "white" garbage in the field of sanitary materials. Therefore, the research and development of polylactic acid degradable materials is not only the developmen...

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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IPC IPC(8): B32B27/02B32B27/06B32B27/12B32B27/28B32B33/00A61F13/472A61F13/511
CPCB32B5/022B32B5/26B32B27/08B32B27/12B32B33/00A61F13/472A61F13/51121A61F13/5116B32B2250/20B32B2262/02B32B2555/00B32B2307/728A61F2013/51178Y02W90/10
Inventor 樊海彬蒋兵
Owner 苏州谷原生物科技有限公司
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