Three-dimensional pored non-woven fabric

A non-woven and three-dimensional technology, applied in the field of open-pore three-dimensional non-woven fabrics, can solve the problems of easy falling off, shifting, and affecting the absorption effect, etc., and achieve the effect of increasing the bonding strength, increasing the contact area, and preventing back seepage

Active Publication Date: 2016-10-26
XIAMEN YANJAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN103908376A, the publication date is July 9, 2014. The name of the invention is a three-dimensional non-woven fabric with an open-pore structure. The application discloses a three-dimensional non-woven fabric with raised areas and Concave area and open pore structure, each of the protruding areas to the concave area has a fiber density gradient, through the compressive performance of the high-density fiber area, the obvious concave-convex effect of the three-dimensional non-woven fabric is maintained, and the disadvantage is that the protruding The area is only supported by the high-density fibers on the side edges of the raised area, and it is difficult to maintain the 3D effect of the three-dimensional non-woven fabric under a certain pressure, and when the finished product is made, the edge of the bottom of the raised area is in the same position as the concave area. On the plane, when bonding with the diversion layer or the absorption layer, due to the small bonding area, it is not easy to bond, and it is easy to fall off and shift during use, thus affecting the absorption effect

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 1.5dtex*38mm PE / PP bicomponent fiber as raw material. During production, the fiber is unpacked and loosened by the bale opener and then sent to the carding machine, carded into a fiber web and entered into the oven. The temperature of the hot air is 145°C, and the frequency of the hot air blower is 38Hz for penetration heating. A number of bonding points are formed, and the consolidated fiber web is processed by a pair of heated meshing pin rolls and concave rolls to form a three-dimensional forming process such as figure 1 , Figure 1A Open-pore three-dimensional nonwoven fabric A1 shown.

[0026] The perforated three-dimensional nonwoven fabric A1 has four planes, the first plane 11 is formed by the top of the convex part B1, the second plane 12 is the plane where the concave part C1 is located, and the convex part B1 is Discontinuous, the concave part C1 is distributed around the convex part B1, the bottom of the convex part B1 and the bottom of the concave pa...

Embodiment 2

[0039] Take 2.0dtex*38mm PE / PET hydrophilic bicomponent fiber and 2.0dtex*38mmPE / PET hydrophobic bicomponent fiber as raw materials. During production, the two kinds of fibers are respectively unpacked and loosened by the unpacking machine and then sent to the carding machine. After being carded into a fiber web, it is laminated and then enters the oven. Through heating, a number of bonding points are formed between the fibers, and the consolidated fiber web is processed by a pair of heated meshing needle rollers and concave rollers for three-dimensional molding processing, such as figure 2 , Figure 2A The open-pored three-dimensional nonwoven fabric A2 is shown.

[0040]The perforated three-dimensional nonwoven fabric A2 has four planes, the first plane 21 is formed by the top of the convex part B2, the second plane 22 is the plane where the concave part C2 is located, and the convex part B2 is Continuously, the concave portion C2 is distributed around the convex portion ...

Embodiment 3

[0043] Take 2.0dtex*38mm PE / PET hydrophilic bicomponent fiber as raw material. During production, the fibers are unpacked and loosened by the bale opener and then sent to the carding machine, carded into a fiber web and entered into the oven. The temperature of the hot air is 148°C, and the frequency of the hot air blower is 48 Hz for penetration heating. A number of bonding points are formed, and the consolidated fiber web is processed by a pair of heated meshing pin rolls and concave rolls to form a three-dimensional forming process such as image 3 , Figure 3A The open-pored three-dimensional nonwoven fabric A3 is shown.

[0044] The perforated three-dimensional nonwoven fabric A3 has four planes, the first plane 31 is formed by the top of the convex part B3, the second plane 32 is the plane where the concave part C3 is located, and the convex part B3 is It is made of protrusions of different sizes and shapes, and the concave portion C3 is distributed around the convex p...

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 present invention discloses a three-dimensional pored non-woven fabric, which is provided with four planes, wherein the first plane is formed by the tops of convex portions; the second plane is the plane where concave portions are located, and the concave portions are distributed around the convex portions; the bottoms of the convex portions and the bottoms of the concave portions form the continuous third plane; the second plane is provided with funnel-shaped three-dimensional pores extending from the second plane to the third plane; the bottoms of the funnel-shaped three-dimensional pores form the fourth plane. The third plane is a continuous plane and is located at the bottoms of the convex portions and at the bottoms of the concave portions, so that the third plane can provide effective support for the convex portions, and the contact area between the third plane and a lower diversion layer or an absorbent can be increased during the processing of the absorbent article so as to increase the bonding strength and to prevent the surface layer from falling off or shifting during use.

Description

technical field [0001] The invention relates to the field of non-woven fabrics, in particular to an open-hole three-dimensional non-woven fabric which maintains a three-dimensional shape and increases bonding strength during use. Background technique [0002] With the improvement of living standards, non-woven fabrics are widely used in hygienic absorbent products such as sanitary napkins or diapers. In order to improve the comfort of non-woven fabrics in contact with the skin, effectively reduce the contact area with the wearer's skin, increase the penetration rate of body fluids, and reduce the sense of moisture stickiness, therefore, it is necessary to open holes in the non-woven fabrics to form infiltration channels to increase non-woven fabrics. The concave-convex structure of the woven fabric reduces the contact area, so that non-woven fabrics and perforated non-woven fabrics with concave-convex structures appear. The nonwoven fabric is embossed or perforated on the s...

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): A61F13/511
CPCA61F13/51104A61F2013/51355
Inventor 蔡吉祥谢继华罗杰龙
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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