Top layer for absorption products

A technology of absorbent products and layer materials, applied in the field of absorbent products, can solve the problems of unsanitary, uncomfortable feeling, weak fusion connection and the like

Inactive Publication Date: 2003-07-09
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Top sheets of absorbent articles currently used include nonwoven fabrics produced by various methods, porous nonwoven fabrics, and porous films of synthetic resins such as polyethylene, but none of them can sufficiently satisfy the above-mentioned requirements. Requirements for absorption properties and surface properties
[0004] A disadvantage of absorbent articles with a topsheet made of non-woven fabric is that waste fluids excreted on the topsheet, such as menstrual blood or urine, remain near the surface of the topsheet, and their color gives the user the impression of being uncomfortable or unhygienic
Due to the heat embossing in a very fine pattern that locally joins the two layers, this non-resistant fabric is too rigid to be used as a topsheet in an absorbent article
In addition, due to the weak fusion connection between the fiber components, the raised fiber layer is easy to fluff

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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  • Top layer for absorption products
  • Top layer for absorption products
  • Top layer for absorption products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The present invention will now be described in more detail with reference to Examples. All percentages and ratios are by weight unless otherwise indicated. Preparation of the top layer:

[0093] Heat-fusible sheath-type conjugate fibers (2.2 dtex x 51 mm) (available from Daiwabo Co.) consisting of a polyethylene terephthalate core and a polyethylene sheath were carded into a web and wound at 120 Heat treatment at ℃ to melt-bond the intersection points of fibers 2 Base-weight non-woven fabric. The non-proof cloth has a thickness of 1 mm and a thickness of 0.025 g / cm under hot air treatment at 70 ° C. 3 Lofty non-woven fabric of bulk density (material forming the first layer).

[0094] Separately, the fiber CPP (2.2dtex * 51 millimeters that can be obtained from Daiwabo Co., Ltd) that can be automatically crimped into a spiral shape is carded to have 35g / m 2 Basis weight web (material forming the second layer).

[0095] The material forming the first layer and the m...

Embodiment 2

[0102] Make top layer with the same method as embodiment 1, difference will have thickness 0.9 millimeter, apparent density 0.013g / cm 3 And base weight 12g / m 2 The bulky non-woven cloth used as the material forming the first layer, and the fiber web forming the second layer partially connected with the bulky non-woven fabric shrunk at an area shrinkage rate of 30%.

Embodiment 3

[0104] A top layer was prepared in the same manner as in Example 2, except that the percent area shrinkage was changed to 15%.

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Abstract

A topsheet for absorbent articles having absorbing performance for smoothly transferring liquid body waste, e.g., menstrual blood or urine, to an underlying absorbent member and surface characteristics such that the surface thereof in contact with wearer's skin is soft enough not to cause skin irritation. The topsheet 1 comprises a first layer 11 disposed on the side of a wearer and a second layer 12 disposed on the side of an absorbent member, the first layer and the second layer being partly joined together, and having protrusions and depressions on the side of a wearer, wherein the first and second layers each comprise a fiber aggregate, the first layer has fusion-bonded fiber intersections, the first layer has an apparent thickness (t1) of 0.1 to 5 mm, the second layer has an apparent thickness (t2) of 0.2 to 3 mm, the apparent thickness ratio of the first layer to the second layer (t1 / t2) is 0.5 to 8, the first layer has a fiber density (d1) of 0.001 to 0.05 g / cm<3>, the second layer has a fiber density (d2) of 0.03 to 0.2 g / cm<3>, and the fiber density (d2) of the second layer is higher than that (d1) of the first layer.

Description

technical field [0001] The present invention relates to absorbent articles, such as sanitary napkins, panty liners, incontinence pads and disposable diapers, and to sheets for absorbent articles as topsheets that contact the wearer's body. Background technique [0002] Topsheets for absorbent articles, such as sanitary napkins, are required not only to have absorbent properties that allow smooth transfer of liquid body waste, such as menstrual blood or urine, to the underlying absorbent member, but also to have a surface that is compatible with the wearer's skin. The contact surface is soft enough not to irritate the skin. [0003] Top sheets of absorbent articles currently used include nonwoven fabrics produced by various methods, porous nonwoven fabrics, and porous films of synthetic resins such as polyethylene, but none of them can sufficiently satisfy the above-mentioned requirements. Requirements for absorbent properties and surface properties. ...

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 Applications(China)
IPC IPC(8): A61F13/511A61F5/44A61F13/15A61F13/472A61F13/49
CPCA61F2013/51355A61F2013/51178Y10T428/24826Y10T428/24479A61F2013/51338Y10T428/2481A61F13/511Y10T428/24595A61F13/51104A61F13/5116A61F13/513
Inventor 丰岛泰生杉浦弘子坂本纪子内山泰树浅野浩司
Owner KAO CORP
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