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Liquid-permeable nonwoven fibrous fabric

A non-woven, liquid-permeable technology, applied in the field of liquid-permeable fiber non-woven fabrics, can solve the problem of easy to stay on the bottom surface and so on

Active Publication Date: 2012-05-30
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such grooves, viscous body fluids such as menstrual blood often do not quickly penetrate the top sheet, but tend to stay on the bottom surface.

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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  • Liquid-permeable nonwoven fibrous fabric
  • Liquid-permeable nonwoven fibrous fabric
  • Liquid-permeable nonwoven fibrous fabric

Examples

Experimental program
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Effect test

Embodiment 1 to 10

[0086] 1. As short fibers for obtaining the fiber nonwoven fabrics of Examples, first and second composite short fibers in which the core component is polyester resin and the sheath component is polyethylene resin are mixed. The fineness of the first composite staple fibers was 2.2 dtex, the fiber length was 45 mm, and the mass per square meter of the entire staple fibers was 80% by mass. The fineness of the second composite short fibers was 2.6 dtex, the fiber length was 38 mm, and the mass per square meter of the entire short fibers was 20% by mass. The first and second short fibers after mixing are processed by drum carding machine to obtain a quality of 15g / m 2 , 25g / m 2 、35g / m 2 、40g / m 2 fiber web.

[0087] 2. in figure 2 These fiber webs were processed in the process. Set as follows figure 2 Conditions of the first, second and third nozzle assemblies in process II.

[0088] (first and second nozzle assemblies)

[0089] Air temperature in nozzle header: 200°C ...

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

A liquid-permeable nonwoven fibrous fabric which permits a viscous bodily fluid to pass therethrough. The liquid-permeable nonwoven fibrous fabric (1) comprises staple fibers (2) formed from a thermoplastic synthetic resin and disposed in the state of being fusion-bonded to one another. The front surface (3) thereof has ridges (6) and grooves (7), the ridges (6) and the grooves (7) extending in parallel with one another in the lengthwise direction (A) and being alternately arranged in the crosswise direction (B). The proportion of the height (t) from the back surface (4) of the nonwoven fibrous fabric (1) to the bottom (12) of each groove (7) to the height (T) from the back surface (4) to the top (11) of each ridge (6) is in the range of 40-55%. The front surface (3) includes fibers (2a) which are staple fibers (2) each extending between adjacent grooves (7) through the ridge (6) and which have been fusion-bonded to other staple fibers (2) in each of the grooves (7).

Description

technical field [0001] The present invention relates to a liquid-permeable fibrous nonwoven fabric, and more particularly to a liquid-permeable fibrous nonwoven fabric suitable for use as a top sheet of disposable bodily fluid absorbent articles such as disposable diapers and sanitary napkins. Background technique [0002] Currently, a well-known liquid-permeable fibrous nonwoven fabric is formed of short fibers of thermoplastic synthetic resin. For example, such a nonwoven fabric is disclosed in JP-A-2009-30218 (Patent Document 1). On the surface, ridges and grooves parallel to each other and extending in the machine direction are formed. The strips are alternately arranged in a direction intersecting the machine direction, and the back surface is formed flat. [0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2009-30218 (JP2009-30218A) [0004] The nonwoven fabric described in Patent Document 1 is produced by spraying heated air onto the surface of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/54D04H1/542A61F13/511A61F13/15A61F13/49D04H1/4391D04H1/541
CPCA61F13/51121A61F13/51108D04H1/541D04H1/70D04H1/76Y10T428/2457Y10T428/24942Y10T156/1023Y10T428/24603Y10T442/608D04H1/5412D04H1/5414B32B3/30A61F13/15A61F13/49A61F13/511D04H1/4391D04H1/542D04H1/558D04H13/00D10B2509/026
Inventor 大庭彻水谷聪木村明宽
Owner UNI CHARM CORP
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