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Composite sheet and absorbent article comprising composite sheet

A composite sheet, stretchable technology, applied in the direction of absorbent pads, fabrics, layered products, etc., can solve the problems of increased production costs, larger gaps between fibers, and exudation of adhesives, and achieves the effect of good hand feeling.

Active Publication Date: 2009-09-23
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is also a problem that the elongation of the fiber and the cutting of the fiber due to the drawing process, and the resulting increase in the gap between the fibers
[0005] Here, if the gaps between the fibers become larger, there is a problem that the adhesive used for bonding the nonwoven fabrics will seep out.
In addition, when the basis weight is increased to prevent bleeding of the adhesive, the production cost may increase and the usability may be adversely affected.

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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  • Composite sheet and absorbent article comprising composite sheet
  • Composite sheet and absorbent article comprising composite sheet
  • Composite sheet and absorbent article comprising composite sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0097] Hereinafter, examples of the present invention will be described, but these examples are merely illustrations suitable for describing the present invention, and do not limit the present invention in any way.

[0098] The stretchable nonwoven raw fabric 5 was prepared by setting the mixing ratio (weight ratio) of polypropylene fibers (PP) and polyurethane fibers (TPU) to 55:45. Next, the stretchable nonwoven raw fabric 5 is gear-drawn by shaping rollers 10, 10' to obtain a stretchable nonwoven fabric 2. The basis weight of stretchable non-woven fabric 5 is 35g / m 2 , the basis weight of the stretchable nonwoven fabric 2 in a relaxed state is 38g / m 2 .

[0099] Then, the stretchable nonwoven fabric 2 was thermally welded to the nonstretchable nonwoven fabric 3 in a state stretched by 1.88 times. In addition, the coating pattern of the adhesive is spiral coating, and the basis weight of the hot melt adhesive is 5g / m 2 (as Example 1).

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Abstract

A composite sheet that has a low basis weight and can inhibit adhesives from flowing out is provided. The composite sheet 1 according to the present invention is formed by bonding a stretchable nonwoven fabric 2 and a non-stretchable nonwoven fabric 3 to each other with adhesives 4 . The stretchable nonwoven fabric 2 in an extended state is bonded to the non-stretchable sheet. The stretchable nonwoven fabric 2 has a plurality of strip-shaped non-dense regions 21 and a plurality of strip-shaped dense regions 22 formed on both its surfaces alternately and alternately in the transverse directionsuch that the dense regions 22 on one of the surfaces and the dense regions 22 on the other surface are not overlapped with each other. The stretchable nonwoven fabric 2 includes thermoplastic fibersthat have been stretched at least partially and elastomer fibers.

Description

technical field [0001] The present invention relates to a composite sheet and an absorbent article using the composite sheet. Background technique [0002] Conventionally, a composite sheet in which a plurality of nonwoven fabrics are bonded together with an adhesive has been used in various applications, and the composite sheet has been subjected to various processes depending on the application and purpose of use. For example, when used in an absorbent article, the composite sheet is formed so that the appearance and feel of the absorbent article are good, and the composite sheet can expand and contract in accordance with body movements and the like. [0003] In addition, when a stretchable nonwoven fabric is used for an absorbent article, strength to withstand use of the absorbent article is required. Conversely, in order to maintain the usability of absorbent articles and to produce them at reduced cost, it is required to use a nonwoven fabric with a low basis weight an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/26A61F13/49A61F13/511A61F13/514D04H1/54D04H13/00D04H1/58
CPCD04H13/002B32B5/14B32B5/08D04H13/006B32B5/26B32B5/04B32B7/14A61F13/4902B32B3/30A61F13/49009B32B3/28D04H1/593Y10T428/2457Y10T428/24595Y10T428/24603Y10T428/24678Y10T442/602Y10T442/659Y10T442/601D04H13/00A61F13/514
Inventor 桥本达也向井敬智光野聪辻智子赤木健一
Owner UNI CHARM CORP
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