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PLA (polylactic acid) non-woven fabric diaper with high breathability and preparation method thereof

A technology of polylactic acid and non-woven fabrics, applied in the field of hygiene, can solve the problems of easy diaper rash and affecting the air permeability of products, and achieve the effect of not easy side leakage, good isolation and increased air permeability

Active Publication Date: 2014-11-12
马鞍山同杰良生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the prior art, when it comes to diapers using polylactic acid fibers, diapers are produced by conventional methods, and the surface does not use a multi-layer structure. Due to the application of a large amount of hot melt adhesive, the air permeability of the product is affected. The baby's skin is very tender, and the diapers that are too stuffy will cause the baby to get diaper rash easily. Therefore, it is very necessary to develop disposable sanitary products such as diapers with good air permeability.

Method used

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  • PLA (polylactic acid) non-woven fabric diaper with high breathability and preparation method thereof
  • PLA (polylactic acid) non-woven fabric diaper with high breathability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] like figure 1 The diapers proposed by the present invention are approximately rectangular when flattened, and the four corners are provided with adhesive parts 4 (the trade name is a nylon hook and loop). The diapers surround the buttocks, and the adhesive parts bond together to form shorts. The "inside" of the diaper refers to the side that is in contact with the body; when it is spread out, it is the "up" direction. The waist is provided with a curved elastic waistline 9 .

[0044] The diapers include a surface material 1, a water-absorbent core layer, and a bottom film 3 from the inside to the outside. The surface material 1 has a three-layer structure of an upper layer, a middle layer, and a lower layer. Woven cloth and lower polylactic acid short fiber net. The polylactic acid long-fiber non-woven fabric is distributed with diversion holes with a diameter of 20 mesh. The diversion holes are in the shape of a large top and a small bottom.

[0045] The polylactic...

Embodiment 2

[0056] The preparation of the same paper diaper of structure and embodiment 1:

[0057] A PLA fiber with a linear density of 3.3dtex and a length of 51mm is used. First, a hydrophilic agent is sprayed on the surface of the fiber. The concentration of the hydrophilic agent is 10%, so that the fiber surface contains a hydrophilic agent with a concentration of 0.8%. After the polylactic acid staple fiber is fed, opened, mixed, roller carding machine and finely carded by the work roll, it is stripped by double doffers and transferred to the upper and lower layers of fiber webs. The upper and lower layers of polylactic acid short fibers The weight of the fiber net is 20 grams per square meter, and the thickness is 1.1mm; the active unwinding device located in the middle of the double doffer unwinds the 100% polylactic acid filament non-woven fabric, and sandwiches the upper and lower layers of polylactic acid short fiber In the middle of the net, the three-layer fiber net is sent t...

Embodiment 3

[0066] The preparation of the same paper diaper of structure and embodiment 1:

[0067] Using a PLA fiber with a linear density of 4.4dtex and a length of 65mm, first spray a hydrophilic agent on the surface of the fiber, the concentration of the hydrophilic agent is 8%, so that the fiber surface contains a hydrophilic agent with a concentration of 1%. After the polylactic acid staple fiber is fed, opened, mixed, roller carding machine and finely carded by the work roll, it is stripped by double doffers and transferred to the upper and lower layers of fiber webs. The upper and lower layers of polylactic acid short fibers The weight of the fiber net is 40 grams per square meter, and the thickness is 1.5mm; the active unwinding device located in the middle of the double doffer unwinds the 100% polylactic acid filament non-woven fabric, and sandwiches the upper and lower layers of polylactic acid short fiber In the middle of the net, the three-layer fiber net is sent to the flat ...

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Abstract

The invention discloses a PLA (polylactic acid) non-woven fabric diaper with high breathability. The PLA non-woven fabric diaper comprises a surface material, a water absorption core layer and a bottom membrane from inside to outside, wherein the surface material adopts a three-layer structure consisting of an upper layer, a middle layer and a lower layer, PLA short fiber webs are arranged on the upper layer and the lower layer, PLA long fiber non-woven fabric is arranged on the middle layer, and guide holes with pore diameters of 10-30 meshes are distributed on the PLA long fiber non-woven fabric. According to the diaper with the high breathability, upper-layer PLA short fiber non-woven fabric in three-layer PLA fiber webs is adopted as a surface layer, lower-layer PLA short fiber non-woven fabric is adopted as a guide layer, middle PLA filament non-woven fabric is adopts as an isolated layer, the three layers are bonded into integral non-woven fabric in a hot melting compound manner, the method for compounding the guide layer and the non-woven fabric on the surface layer through glue spraying in the production process of conventional diapers is not required, and the breathability between the surface layer and the non-woven fabric on the guide layer is greatly improved.

Description

Technical field [0001] The invention belongs to the field of hygiene, and specifically relates to polylactic acid non-woven diapers. Background technique [0002] Diapers are disposable sanitary products that are discarded after one use. The main user groups are infants and adults. At present, the Chinese market is mainly for baby diapers, but as people's living standards continue to improve and the aging of the population intensifies, the sales of adult diapers are growing. According to statistics from Dahe Consulting: the overall market size of baby diapers (including baby diapers) in my country in 2010 was 18.475 billion yuan, accounting for approximately 93.93% of the overall market size of disposable sanitary products in my country. In terms of historical trends, the overall market size of baby diapers (including baby diapers) in my country was 2.00 billion yuan in 2003. By 2010, the market size had grown to 18.475 billion yuan, with an average annual compound growth r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/496A61F13/537
CPCA61F13/15577A61F13/496A61F13/51121A61F13/5121A61F13/513A61F2013/15552A61F2013/51035D04H5/08
Inventor 钱程许克强陈瑞锋吴骄
Owner 马鞍山同杰良生物材料有限公司
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