Liquid-permeable nonwoven fibrous fabric

A non-woven fabric and 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

Active Publication Date: 2014-11-12
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

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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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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 ...

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Abstract

The present invention provides a liquid-pervious fibrous non-woven fabric wherein even viscous bodily fluid can quickly permeate. The liquid-pervious fibrous non-woven fabric 1 including staple fibers 2 made of thermoplastic synthetic resin fused together is formed on its upper surface 3 with a plurality of ridges 6 and a plurality of grooves 7 extending in parallel in a longitudinal direction A and these ridges 6 and grooves 7 are arranged alternately in a transverse direction B. Height t measured from a lower surface 4 of the fibrous non-woven fabric 1 to a bottom 12 of the groove 7 is in a range of 40 to 55% of height T measured from a lower surface 4 of the fibrous non-woven fabric 1 to an apex 11 of the ridge 6. On the upper surface 3, some of the staple fibers 2 (2a) extend across the ridges 6 to the adjacent grooves 7 on each side of the ridges 6 and are, in the respective grooves 7, fused to the staple fibers 2 of a different type from the former staple fibers 2.

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 Patents(China)
IPC IPC(8): D04H1/54D04H1/541D04H1/492A61F13/511A61F13/15A61F13/49D04H1/4391
CPCD04H1/541A61F13/51108D04H1/70A61F13/51121D04H1/76Y10T428/2457Y10T428/24942Y10T156/1023Y10T428/24603Y10T442/608D04H1/5412D04H1/5414B32B3/30A61F13/15A61F13/49A61F13/511D04H1/4391D04H1/542D04H1/558D04H13/00D10B2509/026
Inventor 大庭彻水谷聪木村明宽
Owner UNI CHARM CORP
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