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Spun-bonded nonwoven fabric and sanitary supplies

A technology for sanitary materials and non-woven fabrics, which is applied in non-woven fabrics, textiles and papermaking, medical science, etc., can solve the problem of not disclosing the effect of improving the adhesion of melt-blown fiber webs, and achieve the effect of soft touch

Active Publication Date: 2005-10-19
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no description of the use of melt-blown fiber webs in the above-mentioned patent announcements, and the adhesion improvement effect of the melt-blown fiber webs shown in the present invention is not disclosed.

Method used

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  • Spun-bonded nonwoven fabric and sanitary supplies
  • Spun-bonded nonwoven fabric and sanitary supplies
  • Spun-bonded nonwoven fabric and sanitary supplies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、 Embodiment 2

[0117] Using titanium oxide-containing polypropylene (MFR = 40 measured under the conditions of Table 1 of JIS-K7210) as a raw material, long fibers melted and extruded from a nozzle with a circular cross-section are cooled from the side near the spinneret while using Traction and pulling devices such as air aspirators are used for traction. The filaments coming out of the pulling device are opened by the charging device, and then collected as a net on the moving metal mesh conveyor.

[0118] The web is passed between the embossing rolls / flat rolls heated to 135°C, and a needle point pattern (area ratio of about 7%) arranged in a zigzag pattern (area ratio of about 7%) is formed in a circle with a diameter of 0.43 mm and an inclination of 45° and an inclination pitch of 1.5 mm. Heat press welding, thus obtaining a non-woven fabric with scattered patterns of pinpoints.

[0119] The constituent fibers of the obtained spunbonded nonwoven fabric are circular cross-section filamen...

Embodiment 3、 Embodiment 4

[0124] Except that the non-combining down-pressing embossing pattern is discontinuous as the opposite of embodiment 1 as the raised tortoise shell pattern (0.45mm on one side, 25% of the pressing area ratio, pattern spacing vertically 2.8mm, horizontally 3.2mm, deep 0.6mm), other are all identical with embodiment 1, thereby obtain 2.8dtex, the weight per unit area is 20g / m 2 The non-woven fabric of the present invention. The evaluation results of non-woven fabrics are shown in Tables 1 and 2.

[0125] The nonwoven fabric was used as the surface layer, and in Example 3, the continuous protrusions of the low-density region of the nonwoven fabric (the surface of the nonwoven fabric) were used on the skin side of the surface layer, and in Example 4, the nonwoven fabric was used instead. The non-continuous debossed pattern surface of the high-density area on the back is used for the top layer to make disposable diapers. As in the Examples, the softness was better than that of the...

Embodiment 5

[0127] Except for the non-combined embossed pattern as a discontinuously scattered concave grid pattern (0.3mm×0.7mm on one side, 22% pressing area ratio, 0.6mm deep) and passing through a roller containing a concave grid pattern that matches the pattern Except combination place, other are all identical with embodiment 1, thereby obtain 2.0dtex, the weight per unit area is 18g / m 2 The non-woven fabric of the present invention. The evaluation results of non-woven fabrics are shown in Tables 1 and 2.

[0128] A disposable diaper was produced by making the surface of the nonwoven fabric with the continuously raised surface of the low-density region (the surface of the nonwoven fabric) facing the skin surface of the top layer. Like Example 1, compared with the conventional nonwoven fabric, it is better in softness and has good rewetting performance.

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Abstract

A spun-bonded nonwoven fabric constituted of a web of continuous filaments of thermoplastic synthetic fibers, the structure of which fabric is set by a pattern composed of areas which are produced by partially fusing the fibers by hot pressing and pierce through the fabric and concavely and convexly embossed patterns on the surfaces of the fabric which patterns are composed of high-density concave and convex areas of unbonded fibers respectively and the bulkiness of which fabric is 100 to 400 % in terms of the ratio of the thickness of the fabric inclusive of the convexly embossed pattern surface to the thickness of the low-density areas of the fabric. The application of a hydrophilic agent to the nonwoven fabric gives sanitary supplies such as disposable diaper.

Description

technical field [0001] The present invention relates to spunbonded nonwoven fabrics, in particular to nonwoven fabrics whose structure is fixed, soft, and Bulk spunbonded nonwovens, disposable hygiene materials and improved nonwovens for disposable hygiene materials. Background technique [0002] Hygienic materials used in diapers, sanitary napkins, etc. are generally composed of a surface layer that allows urine and excrement to pass through, an absorbent body, a waterproof back sheet, and a leak-proof flower called "three-dimensional gathers" that utilizes water resistance. Pattern (カフ) and so on. The materials used for these hygienic materials are mostly non-woven fabrics from the viewpoints of thinness, strength, softness when touching the skin, productivity, and price. [0003] As a kind of hygienic material, the surface layer of disposable diapers is in direct contact with the skin, so it is required to have a soft touch, and at the same time, it is required to have ...

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): D04H3/16A61F13/511A61F13/15D04H3/14
CPCD04H3/14D04H3/16A61F13/511A61F13/51104A61F13/512D04H13/00
Inventor 小河胜嶋村胜
Owner ASAHI KASEI KK
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