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Preparation method of highly air-permeable polylactic acid non-woven diapers

A technology of polylactic acid and non-woven fabrics, which is applied in the field of hygiene, can solve the problems of affecting the air permeability of products, easy to get diaper rash, etc., and achieve the effects of not easy side leakage, good isolation, and good moisture conduction

Active Publication Date: 2016-06-22
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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  • Preparation method of highly air-permeable polylactic acid non-woven diapers
  • Preparation method of highly air-permeable polylactic acid non-woven diapers

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Such as 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 polylac...

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 proposes a polylactic acid non-woven diaper with high air permeability, which includes a surface material, a water-absorbing core layer, and a bottom film from the inside to the outside. The surface material is a three-layer structure of upper layer, middle layer and lower layer, and the upper layer and the lower layer are polylactic acid The short fiber net, the middle layer is polylactic acid long fiber nonwoven fabric, and the polylactic acid long fiber nonwoven fabric is distributed with diversion holes with a pore size of 10-30 mesh. The highly air-permeable paper diaper provided by the present invention adopts the upper polylactic acid short fiber nonwoven fabric in the polylactic acid fiber three-layer web as the surface layer, the lower polylactic acid short fiber nonwoven fabric as the flow-guiding layer, and the middle polylactic acid filament nonwoven fabric As an isolation layer, the three layers are bonded into a whole non-woven fabric by hot-melt lamination, which does not require the method of spraying and laminating the diversion layer and the surface non-woven fabric in the conventional diaper production process, greatly increasing the Air permeability between the non-woven fabrics of the acquisition layer.

Description

technical field [0001] The invention belongs to the field of hygiene, and in particular relates to a polylactic acid non-woven diaper. Background technique [0002] Diapers are disposable hygiene products that are discarded after one use. The main users are infants and adults. At present, the Chinese market is mainly baby diapers, but with the continuous improvement of people's living standards and the aging trend of the population, the sales of adult diapers are showing a growth trend. According to the statistics of Dahe Consulting: In 2010, the overall market size of baby diapers (including baby diapers) in my country was 18.475 billion yuan, accounting for about 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 2.000 billion yuan in 2003. By 2010, the market size had grown to 18.475 billion yuan, with an average annual compound ...

Claims

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Application Information

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Patent Type & Authority Patents(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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