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Stereoscopic nonwoven fabric with pore structure

An open-pore structure, non-woven technology, applied in medical science, bandages, etc., can solve the problems of dryness, easy liquid residue, redness of baby's skin, etc., and achieve the effect of promoting rapid absorption and improving dry performance.

Inactive Publication Date: 2014-07-09
XIAMEN YANJAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, the non-woven fabric has grooves, and most of the non-woven fabrics use hydrophilic fibers as raw materials for non-woven fabrics, which are beneficial to When the body fluid reaches the surface of the absorbent product, it quickly wets and penetrates, but due to the high surface energy of the fiber, it is easy to make the body fluid adsorb around the fiber, so that the body fluid remains between the fibers, especially between the convex part and the groove. Elevated, the liquid is more likely to remain at the bottom of the groove, making the user have a wet, sticky skin, and dry feeling when using it
In particular, when this hydrophilic non-woven fabric is applied to the surface layer of baby diapers, it is easy to cause allergies such as redness and eczema on the baby's skin due to its poor dryness, and the concave and convex parts are affected by other external factors such as pressure. Forced, it is difficult to maintain obvious concave-convex effect, and it does not really reduce the contact area with the wearer's skin

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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  • Stereoscopic nonwoven fabric with pore structure
  • Stereoscopic nonwoven fabric with pore structure
  • Stereoscopic nonwoven fabric with pore structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] like figure 1 , 1A A three-dimensional non-woven fabric 1 with a raised area and an open-hole structure in the recessed area shown in 1B, 1C has a raised area B and a recessed area A that are in contact with the skin, and the top view of the raised area B is a circular shape , exists in the form of "island" in the recessed area A, where there is a uniform transition from the raised area B to the recessed area A, and there is a fiber density gradient from the raised area B to the recessed area A, and from the raised area B to the recessed area A The transition near the side edge of the concave area A is the C area, the fiber density of the C area is 1.5-30 times that of the convex area B, preferably 1.5-5 times, and the fiber density of the concave area A is 1.5-5 times that of the convex area B. 20, preferably 1.5-3 times. In this way, the raised area in contact with the skin surface can bring a soft and comfortable touch to the user, and the side edge area has a str...

Embodiment 2

[0078] like figure 2 As shown, a three-dimensional nonwoven fabric 1 with a raised area and an open-hole structure in the recessed area has a surface layer 1A and a bottom layer 1B, wherein the surface layer 1A is a hydrophobic layer. It has a raised area B and a recessed area A that are in contact with the skin. The top view of the raised area B is circular and exists in the form of an "island" in the recessed area A, wherein the raised area B to the recessed area A is a uniform transition, from The convex area B to the concave area A has a fiber density gradient, and the transition from the convex area B to the concave area A is near the side edge of the concave area A is the C area, and the fiber density of the C area is 1.5-30 times that of the convex area B , preferably 1.5-5 times, the fiber density of the concave area A is 1.5-20 times that of the convex area B, preferably 1.5-3 times. The recessed area A has an opening structure D, and the area of ​​the D area is les...

Embodiment 3

[0080] like image 3 As shown, a three-dimensional nonwoven fabric 1 having a raised area and an opening structure in the recessed area has a raised area B and a recessed area A for skin contact, and the top view of the raised area B is in the shape of a gourd with an "island" The form exists in the concave area A, where the convex area B to the concave area A is a uniform transition, from the convex area B to the concave area A has a fiber density gradient, and the transition from the convex area B to the concave area A is close to the concave area. The side edge of A is the C area, the fiber density of the C area is 1.5-30 times that of the convex area B, preferably 2-5 times, and the fiber density of the concave area A is 1.5-20 times that of the convex area B, preferably 1.5-3 times. The recessed area has an opening structure D, and the area of ​​the D area is less than 20mm 2 , preferably less than 5 mm 2 , the opening rate is less than 50%, preferably less than 30%. ...

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 discloses stereoscopic nonwoven fabric with a pore structure, comprising protrusion areas, recess areas and the pore structure. The protrusion areas and the recess areas are defined on the basis of a nonwoven application surface; fiber density from the protrusion areas to the recess areas is gradient, namely the fiber density of the edges from the protrusion areas to the recess areas is higher than that of the tops of the protrusion areas; the edge fiber density is 1.5-30 times of the top fiber density of the protrusion areas; the fiber density of the recess area is 1.5-20 times of the top fiber density of the protrusion areas; a height difference between the protrusion areas and the recess areas is larger than 0.2mm; the average area of each single pore of the pore structure is smaller than 20mm<2>, with smaller than 50% of porosity; the area of the protrusion areas accounts for 20-80% of total area of the stereoscopic nonwoven fabric. Pressure resistance of the high-density fiber areas keeps the stereoscopic nonwoven fabric significantly uneven, liquid permeation is quickened, residue is reduced, and the stereoscopic nonwoven fabric is high in permeating speed and is dry, cool and comfortable.

Description

technical field [0001] The invention relates to the field of non-woven fabrics, in particular to a three-dimensional non-woven fabric with a raised area, a sunken area and an opening structure. Background technique [0002] At present, non-woven fabrics are widely used in sanitary products such as sanitary napkins or paper diapers, cleaning products such as wiping devices, and medical products such as masks. In order to improve the comfort of non-woven fabrics in contact with the skin, non-woven fabrics with a concave-convex structure have appeared, that is, the surface of the non-woven fabric that is in contact with the wearer's skin is embossed to form a concave-convex structure. Due to the uneven structure, the contact area with the wearer's skin can be effectively reduced, and the feeling of stickiness or dislocation can be reduced. [0003] But this non-woven fabric has grooves, and this non-woven fabric mostly adopts hydrophilic fiber as the raw material of non-wo...

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): A61F13/511
CPCA61F13/51104A61F13/5121A61F13/513A61F13/51394A61F2013/51338A61F2013/51355
Inventor 谢继华谢继权
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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