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Nonwoven-fabric laminate, moisture-permeable nonwoven-fabric laminated sheet comprising nonwoven-fabric laminate, and sanitary supply employing these

A technology for non-woven fabrics and hygiene products, applied in the directions of non-woven fabrics, layered products, textiles and paper making, etc., can solve the problems of poor softness and insufficient hygiene products, and achieve high flexibility and prevent hot melt. The effect of adhesive contamination and soft use feeling

Active Publication Date: 2009-02-25
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the softness of the SMS nonwoven fabric with a 5% modulus index of 0.41 or more is still not good, and the SB nonwoven fabric laminated on two layers of the MB nonwoven fabric is the SMS nonwoven fabric of the same item price, which will become bulky , so it is not enough as a hygienic product that requires softness and lightness

Method used

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  • Nonwoven-fabric laminate, moisture-permeable nonwoven-fabric laminated sheet comprising nonwoven-fabric laminate, and sanitary supply employing these
  • Nonwoven-fabric laminate, moisture-permeable nonwoven-fabric laminated sheet comprising nonwoven-fabric laminate, and sanitary supply employing these
  • Nonwoven-fabric laminate, moisture-permeable nonwoven-fabric laminated sheet comprising nonwoven-fabric laminate, and sanitary supply employing these

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Polypropylene (propylene homopolymer, MFR (measured at a temperature of 230° C. and a load of 2.16 kg according to JIS K7210-1999): 65 g / 10 minutes) was used as a raw material of the spunbonded nonwoven fabric. Set the temperature of the molten resin at 220°C, the outflow of a single hole at 0.40g / min, the cooling wind speed at 1.4m / s, and the cooling air temperature at 25°C to obtain a fiber diameter of 1.2d, laminated 2-layer spunbonded nonwoven fabric, and the unit weight is 10.8g / m 2 The first SB nonwoven fabric 14.

[0104] Polypropylene (propylene homopolymer, MFR (measured at a temperature of 230° C. and a load of 2.16 kg according to JIS K7210-1999): 900 g / 10 minutes) was used as a raw material of the meltblown nonwoven fabric. Use an extruder to melt and knead at a molding temperature of 290°C, and extrude the obtained melt-kneaded product in a highly heated air flow with a melt blown die to obtain a fiber diameter of 2 μm and a mesh weight of 0.9 g / m 2 MB N...

Embodiment 2

[0111] In Example 1, the molding conditions were adjusted to obtain fiber diameters of 1.4d and mesh weights of 9.4g / m 2 The first SB nonwoven fabric 14 and the fiber diameter are 1.4d, and the weight is 4.7g / m 2 The second SB nonwoven fabric 16.

[0112] And the fiber diameter is 2μm, and the mesh weight is 0.9g / m 2 MB Nonwovens 12.

[0113] Other conditions were the same as in Example 1, and a nonwoven fabric laminate 10 was produced (the thickness of the first SB nonwoven fabric 14 was 148 μm, the thickness of the second SB nonwoven fabric 16 was 81 μm, the unit-to-pay ratio was 2.0, and the thickness ratio was 1.8. The total item payment is 15g / m 2 ) and the moisture-permeable nonwoven fabric laminated sheet 20 were evaluated and measured in the same manner as in Example 1 for each characteristic.

[0114] The results are shown in Table 1.

Embodiment 3～5

[0116] In Example 1, the molding conditions were adjusted to obtain a weight of 9.4g / m respectively. 2 (Example 3), 8.7g / m 2 (Example 4), 10.6g / m 2 The first SB nonwoven fabric 14 of (embodiment 5) and unit weight are 4.7g / m 2 (Example 3), 5.4g / m 2 (Example 4), 3.5g / m 2 The second SB nonwoven fabric 16 of (Example 5).

[0117] And the fiber diameter is 2μm, and the mesh weight is 0.9g / m 2 MB Nonwovens 12.

[0118] Other conditions are the same as in Example 1, and the nonwoven fabric laminate 10 [the thickness of the first SB nonwoven fabric 14 is 143 μm (Example 3), 130 μm (Example 4), 153 μm (Example 5), and the thickness of the first SB nonwoven fabric 14 is 153 μm (Example 5). The thickness of two SB nonwoven fabrics 16 is 78 μm (embodiment 3), 92 μm (embodiment 4), 69 μm (embodiment 5), and the unit payment ratio is 2.0 (embodiment 3), 1.6 (embodiment 4), 3.0 (implementation Example 5), the thickness ratio is 1.8 (embodiment 3), 1.4 (embodiment 4), 2.2 (embodiment ...

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Abstract

A nonwoven-fabric laminate which comprises a first spun-bonded nonwoven fabric comprising a propylene polymer (first SB nonwoven fabric), a melt-blown nonwoven fabric comprising a propylene polymer and superposed on the first SB nonwoven fabric, and a second spun-bonded nonwoven fabric comprising a propylene polymer (second SB nonwoven fabric) and superposed on the melt-blown nonwoven fabric and which has an overall basis weight of 30 g / m<2> or less. The nonwoven-fabric laminate is characterized in that the first SB nonwoven fabric has a basis weight of 3-25 g / m<2>, the second SB nonwoven fabric has a basis weight of 1-11 g / m<2>, the ratio of the basis weight of the first SB nonwoven fabric to the basis weight of the second SB nonwoven fabric is 1.6 or higher, the ratio of the thickness of the first SB nonwoven fabric to the thickness of the second SB nonwoven fabric is 1.4 or higher, the melt-blown nonwoven fabric has a basis weight less than 3 g / m<2>, and the areal proportion of press-bonded parts is 6-25%.

Description

technical field [0001] The present invention relates to excellent flexibility and water resistance, and at the same time, when a nonwoven fabric is bonded to other sheets such as a moisture-permeable film using a hot-melt adhesive, the hot-melt adhesive penetrates the nonwoven fabric layer and oozes out A nonwoven fabric laminate in which the so-called adhesive contamination is suppressed, a moisture-permeable nonwoven fabric laminate sheet using the nonwoven fabric laminate, and a hygienic article using the same. Background technique [0002] Conventionally, in disposable diapers, training pants, menstrual products, and other hygiene products, nonwoven fabrics have been used for various purposes such as linings, moving layers, bottom layers, and side gathers. Among them, spunbond (hereinafter sometimes referred to as "SB") nonwoven fabrics containing propylene-based polymers or melt-blown (hereinafter sometimes referred to as "MB") nonwoven fabrics containing propylene-base...

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): B32B5/26D04H3/16D04H1/54A61F13/15A61F13/49A61F13/514B32B27/32D04H3/007D04H3/14
CPCB32B27/12A61F13/51B32B5/26A61F13/5148D04H13/002B32B27/02D04H13/006D04H1/559D04H1/56D04H3/14Y10T428/24942A61F13/49A61F13/47
Inventor 久本敬司
Owner MITSUI CHEM INC
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