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Nonwoven stretch fabric and process for producing the same

A manufacturing method and stretchable technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of insufficient softness, high maximum strength, and high air permeability

Active Publication Date: 2010-09-29
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no description about making a part of the thin-layer fiber web into the elastic nonwoven fabric, and / or making a part of the constituent fibers of the elastic non-woven fabric into the thin-layer fiber web.
In addition, the above-mentioned elastic non-woven fabrics are insufficient in obtaining good stretchability, good fusion bonding of fibers, high maximum strength, no fuzzing, high air permeability, and soft touch.

Method used

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  • Nonwoven stretch fabric and process for producing the same
  • Nonwoven stretch fabric and process for producing the same
  • Nonwoven stretch fabric and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] use figure 2 The device shown is manufactured figure 1 Stretchable nonwovens shown. First, short fibers (core: PET, sheath: PE) having a diameter of 17 μm and a fiber length of 51 mm were supplied to a carding machine to form an inelastic web 3' composed of a carded web. The mass per unit area of ​​fiber web 3' is 10g / m 2 . An elastic fiber web 1' made of continuous fibers is laminated on the inelastic fiber web 3'.

[0079] The elastic fiber web 1' is formed by the following method. Clayton G1657 (trade name) of elastic resin composed of SEBS was used. The melted resin was extruded from the spinning nozzle using an extruder at a die temperature of 310°C, and an elastic fiber web 1' composed of continuous fibers was formed on the web by a spin-blowing method. The elastic fibers have a diameter of 32 μm. The mass per unit area of ​​fiber web 1' is 40g / m 2 .

[0080] On the elastic fiber web 1', the same inelastic fiber web 2' composed of short fibers as above i...

Embodiment 2

[0100] Instead of the elastic resin used in Example 1, Pandex T-1180N (trade name) manufactured by Diy Asia Bayer Co., Ltd., which is an elastic resin made of thermoplastic polyurethane, was used. The resin was extruded at a die temperature of 230° C., and elastic fibers composed of continuous fibers with a fiber diameter of 20 μm were obtained by the spin-blowing method. In addition, the mass per unit area of ​​the elastic fiber web 1' is 30 g / m 2 . Other than that, it carried out similarly to Example 1, and obtained the stretch nonwoven fabric. The properties of the obtained stretchable nonwoven fabric are shown in Table 1 below. In addition, Table 2 shows the thickness and bending rigidity values ​​of the fiber sheet 10A before stretching.

Embodiment 3

[0102] Instead of the elastic resin used in Example 1, EG8200 (trade name) manufactured by Dow Chemical Co., Ltd., which is an elastic resin composed of polyolefin-based elastomer, and Clayton G1657 (trade name), an elastic resin composed of SEBS, were used. These resins were extruded at a die temperature of 320° C., and side-by-side composite elastic fibers composed of continuous fibers with a fiber diameter of 23 μm were obtained by the spin-blowing method. The resin weight ratio is 5:5. Make the mass per unit area of ​​the elastic fiber web 1' be 20g / m 2 . Other than that, it carried out similarly to Example 1, and obtained the stretch nonwoven fabric. The properties of the obtained stretchable nonwoven fabric are shown in Table 1 below. In addition, Table 2 shows the thickness and bending rigidity values ​​of the fiber sheet 10A before stretching.

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Abstract

A nonwoven stretch fabric (10) which comprises an elastic fibrous layer (1) and, disposed on at least one side thereof, a non-elastic fibrous layer (2,3) which is substantially non-elastic. These fibrous layers (1,2,3) have been wholly bonded by fusion bonding at fiber intersections so that the constituent fibers of the elastic fibrous layer (1) retain a fiber shape. Part of the constituent fibers of the non-elastic fibrous layer (2,3) have come into the elastic fibrous layer (1) and / or part of the constituent fibers of the elastic fibrous layer (1) have come into the non-elastic fibrous layer (2,3). The nonwoven stretch fabric is preferably produced by superposing a web comprising elastic fibers on a web comprising non-elastic fibers, subjecting these webs in an ununited state to a hot air treatment so that the air passes through the webs to thereby fusion-bond the fibers to one another and obtain a fibrous sheet composed of these webs united with each other, stretching the fibrous sheet in at least one direction, and then releasing the sheet from the stretched state.

Description

technical field [0001] The present invention relates to stretchable nonwoven fabric and its manufacturing method. In addition, the present invention also relates to a method of manufacturing a product having an elastic nonwoven fabric and an elastic portion. Background technique [0002] As a composite stretchable nonwoven fabric having a nonwoven fabric and an elastic fiber layer, a nonwoven fabric using a fiber layer of short fibers for the surface layer is known (see US4107364). However, if short fibers are used for the surface layer, fluffing tends to occur and the texture of the stretch nonwoven fabric tends to decrease. In order to prevent fuzzing, it is also conceivable to partially join the nonwoven fabric and the elastic fiber layer using an adhesive or a hot roller, and then stretch it mechanically to make it stretchable, but in this case, Levitation between the layers occurred between the joined parts, and the joined parts became hard, and the texture of the str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/16D04H1/54D04H1/46B32B5/26D04H13/00
Inventor 郡司亮彦小林秀行金泽幸二舛木哲也宫村猛史
Owner KAO CORP