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
CN102482817BActive Publication Date: 2014-11-12UNI CHARM CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNI CHARM CORP
Publication Date
2014-11-12

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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.
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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

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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