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Absorbency substance

An absorbent and article technology, used in absorbent pads, medical science, clothing, etc., can solve the problems of reduced cushioning, more contact area, and smaller bulge, so as to improve shape retention, improve skin feel, and eliminate stiffness. sense of effect

Active Publication Date: 2013-07-10
DAIO PAPER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] With regard to the front sheet described in the above-mentioned Patent Document 1, it is true that by arranging the protuberances and the grooves alternately, a three-dimensional effect is created on the surface of the sheet, but the above-mentioned protuberances are in linear contact with the skin, and the contact area with the skin is large, so it cannot effectively prevent chafing. Injury, inflammation, fatigue and other skin problems, and can not eliminate the feeling of stiffness when expelling blood
In addition, the shape retention of the wave processing that forms the protrusions and grooves on the nonwoven fabric is not sufficient, and there is a problem that the degree of unevenness of the wave processing gradually decreases when the state of being subjected to pressure during sitting or sleeping continues.
In addition, the fiber part of the raised part can ensure the raised amount in the dry state, but when it becomes wet, the fiber naturally compresses (shrinks), the raised amount decreases, and there is a problem that the shape retention of the unevenness is insufficient, such as the cushioning property is extremely reduced.

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

no. 1 example

[0068] The above-mentioned front sheet 3 uses a liquid-permeable sheet formed as follows: at least a non-woven fabric layer constituting the skin-contacting surface layer and a plastic film layer laminated on the non-skin-contacting surface side of the non-woven fabric layer. The layer sheet is subjected to a concave-convex embossing process consisting of a plurality of protruding portions 7, 7..., and the convex embossing part or concave embossing part in the concave-convex embossing is implemented. hole treatment.

[0069] The base material of above-mentioned face sheet 3 constitutes, specifically as shown in Figure 2 (A), can use the thin sheet of double-layer structure that is made of hydrophobic non-woven fabric layer 3A / plastic film layer 3B, or by hydrophilic non-woven fabric layer. The sheet of the double-layer structure that woven fabric layer 3A / plastic film layer 3B constitutes, or as shown in Figure 2 (B), use is made of hydrophobic nonwoven fabric layer 3A / plastic...

no. 2 example

[0081] In the above-mentioned first embodiment, the opening 3a is applied to the convex embossing part in the above-mentioned concave-convex embossing, but in this second embodiment, as shown in FIG. The embossing applies openings 3a.

[0082] When embossing and perforating the above-mentioned front sheet 3, a convex side embossing roll 10 as shown in FIG. 8 and a concave side embossing roll 11 as shown in FIG. 9 are used. 10 is provided with a plurality of convex parts 10a, 10a..., and a pin embossing 10b is formed in the approximate center of each convex part 10a, 10a, and the concave side embossing roller 11 corresponds to the above-mentioned convex part 10a. A plurality of concave-shaped parts 11a, 11a... are formed, and the surface sheet 3 passes between these convex-side embossing rolls 10 and concave-side embossing rolls 11, so that The embossing is applied while giving the opening 3a to the concave embossed portion by the above-mentioned pin embossing 10b, 10b, . . . ...

no. 3 example

[0086] In the third embodiment, as shown in FIG. 11, on the reverse side of the above-mentioned front sheet 3, the above-mentioned second non-woven fabric composed of a material having a melting point lower than the above-mentioned non-woven fabric layer 3A is bonded by thermal fusion or thermal fusion bonding. In the state of the sheet 6, under the heating conditions above the melting point of the above-mentioned plastic film layer 3B and the second non-woven fabric sheet 6 and less than the melting point of the above-mentioned non-woven fabric layer 3A, as shown in FIG. Concavo-convex embossing processing composed of a plurality of protruding portions 7, 7..., and performing hole processing on the convex embossing part or concave embossing part in the concavo-convex embossing ( not shown).

[0087] The above-mentioned second nonwoven fabric sheet 6 only needs to be hydrophilic to body fluids. Specifically, materials that have been made hydrophilic by using regenerated fiber...

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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PUM

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Abstract

The present invention provides an absorbability article which has cubic effect, high buffering property, and can keep concave-convex form not only under drying condition but also under the condition of absorbing sap by improving the form retentivity of concave-convex embossed pattern. The absorbability article (1) is provided with an absorbing body (4) between permeating front side and back side thin sheets (3) and (2), wherein, the front side thin sheet (3) is a multi-layer sheet which at least comprises a nonwoven cloth layer (3A) forming the skin contacting surface and a plastic film layer(3B) laminated on the non skin contacting surface of the nonwoven cloth layer, the plastic film layer (3B) is composed of material with a melting point lower than the nonwoven cloth. Under the heating condition with a melting point higher than the melting point of the plastic film layer (3B) and lower than the melting point of the nonwoven cloth layer (3A), the concave-convex embossing process composed of a plurality of projecting parts (7, 7......) projecting outside is executed to the front side thin sheet (3), and the hole making process is executed to the top of the convex embossed pattern or the bottom of the concave embossed pattern of the concave-convex embossed pattern.

Description

technical field [0001] The present invention relates to an absorbent article having a front sheet, which is rich in three-dimensionality and has high cushioning properties, eliminates skin problems by reducing the contact area with the skin, and has excellent shape retention of uneven embossing. Background technique [0002] Conventionally, as the surface material of absorbent articles, there are products in which appropriate embossing patterns are applied for the purpose of suppressing wetness by reducing the contact area with the skin, obtaining texture, and improving tactility at the same time. As such a product, the following patent documents 1-5 are mentioned, for example. [0003] Patent Document 1 below discloses an absorbent article using a nonwoven fabric as a front sheet, on which a plurality of raised portions and grooves are alternately arranged without a planar portion, and the raised portions The groove portion is convexly curved and concavely curved, and the ...

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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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/15A61F5/44
Inventor 铃木理惠
Owner DAIO PAPER CORP
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