Surface sheet of absorptive article

An absorbent and surface sheet technology, applied in the field of surface sheets, can solve the problems of inability to move liquid, difficult liquid inhalation, flow to the surface of the surface sheet, etc., and achieve the effect of preventing surface flow and wet back

Active Publication Date: 2009-07-15
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at first, the hydrophilicity of the upper layer whose hydrophilicity is lower than that of the lower layer further decreases after a certain amount of liquid permeates the surface sheet, so there is a problem that it is difficult to discharge (supply) the liquid on the surface sheet. The liquid is sucked into the surface sheet, and the liquid cannot move smoothly to the absorbent body and flow to the surface of the surface sheet

Method used

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  • Surface sheet of absorptive article
  • Surface sheet of absorptive article
  • Surface sheet of absorptive article

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] (Preparation of samples for measurement)

[0053] Cut the surface sheet to a size of 150mm × 70mm, and stack it on 10 pieces of paper adjusted to the same size as the surface sheet (based on the mass per unit area of ​​30g / m 2 Paper formed from pulp, crepe ratio (crepe ratio) is 5 to 10%) and loaded on a horizontal plane, on which Figure 5 Acrylic plate with cylinder shown. Then, place a weight on the acrylic plate and apply 10 g / cm to the surface sheet 2 load. The size of the acrylic resin plate is 200 mm long × 100 mm wide × 8 mm thick, the height of the cylinder from the upper surface of the acrylic resin plate is 50 mm, and the inner diameter of the cylinder is 22 mm from the upper end of the cylinder to the large diameter part of 40 mm. The inner diameter is reduced within a range of 5 mm below the diameter portion, and further, the small diameter portion (height 5 mm) of the lower end of the cylinder is 10 mm below it. A coaxial hole with an inner diameter of...

Embodiment 1

[0111] Embodiment 1: By carding machine, fiber A is carded and manufactured with a mass per unit area of ​​12g / m 2 fiber web, and then the fiber D is carded by a carding machine to produce a mass per unit area of ​​13g / m 2 After superimposing the two fiber webs, the mass per unit area is 25g / m2 through hot air at 136°C (hot air method). 2 of non-woven fabrics.

Embodiment 2

[0112] Embodiment 2: By carding machine, fiber B is carded and manufactured with a mass per unit area of ​​12g / m 2 fiber web, and then the fiber C is carded by a carding machine to produce a mass per unit area of ​​13g / m 2 After superimposing the two fiber webs, the mass per unit area is 25g / m2 through hot air at 136°C (hot air method). 2 of non-woven fabrics.

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PUM

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Abstract

The top sheet of the absorbent article of the present invention is composed of a laminated nonwoven fabric (20) having an upper layer (21) disposed on the skin side and a lower layer (22) disposed on the absorber (4) side, and before liquid permeation, The hydrophilic degree of the lower layer (22) is higher than the hydrophilic degree of the upper layer (21) or approximately equal to the hydrophilic degree of the upper layer (21); after the liquid penetrates, the upper layer (21) The degree of hydrophilicity is higher than that of the lower layer (22).

Description

technical field [0001] The present invention relates to a topsheet preferably used in absorbent articles such as sanitary napkins, panty liners, incontinence pads, and disposable diapers, and their skin-contacting surfaces. Background technique [0002] For the surface sheets of absorbent articles such as sanitary napkins and disposable diapers, it is required to allow body discharges such as menstrual blood and urine to move smoothly to the absorbent body, and it is required to prevent the liquid absorbed by the absorbent body from rewetting (wet back, wet back) . [0003] Referring to Japanese Unexamined Patent Publication No. 2002-065738, it is proposed that a topsheet of an absorbent article has an upper layer disposed on the skin side and a lower layer disposed on the absorbent side, wherein the lower layer has a higher degree of hydrophilicity than the upper layer, and A surface sheet that is more durable than the liquid of the hydrophilized hydrophilic oil agent used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/511
CPCE04H17/1413E04H17/1447
Inventor 村井淳箕轮浩树
Owner KAO CORP
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