Nonwoven fabric laminate, stretchable nonwoven fabric laminate, fiber product, absorbent article and hygienic mask

A non-woven fabric, spunbond non-woven fabric technology, applied in non-woven fabrics, absorbent pads, layered products, etc., can solve the problems of reduced sealing strength, hardened sealing parts, shortened sealing time, etc., and achieve good expansion and contraction characteristics , The effect of good low temperature heat sealing

Pending Publication Date: 2021-05-14
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the purpose of speeding up manufacturing, if the sealing time is shortened in the heat-sealing process, there will be a problem that the sealing strength will decrease
If the sealing temperature is increased, there is a problem that the sealing part becomes hard

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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  • Nonwoven fabric laminate, stretchable nonwoven fabric laminate, fiber product, absorbent article and hygienic mask
  • Nonwoven fabric laminate, stretchable nonwoven fabric laminate, fiber product, absorbent article and hygienic mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0188]

[0189] Use TPU (A-1) and thermoplastic resin composition (B-1) each independently extruder and After the extruder is melted, use a spunbonded nonwoven fabric forming machine with a spinneret, with the resin temperature and die temperature both at 210°C, the cooling air temperature at 20°C, and the stretching air speed at 3160m / min. Carry out melt spinning by spunbonding method, make the long fiber A that is formed by TPU (A-1) and the long fiber B that is formed by thermoplastic resin composition (B-1) The mixed fiber mass ratio is the net of 55:45 ( web) accumulate on the capture surface.

[0190] In addition, the above-mentioned spinneret has a nozzle pattern in which the discharge holes of A-1 (long fiber A) and the discharge holes of B-1 (long fiber B) are arranged alternately, and the diameter of the nozzle of long fiber A is The nozzle diameter of long fiber B is The pitch of the nozzles is 8 mm in the vertical direction and 11 mm in the horizontal dire...

Embodiment 2

[0198]

[0199] Use TPU (A-1) and thermoplastic resin composition (B-1) each independently extruder and After the extruder is melted, use a spunbonded nonwoven fabric forming machine with a spinneret, with the resin temperature and die temperature both at 210°C, the cooling air temperature at 20°C, and the stretching air speed at 3160m / min. Melt spinning by a spunbonding method, and a web in which the mixed fiber mass ratio of long fibers A made of TPU (A-1) and long fibers B made of thermoplastic resin composition (B-1) is 47:53 is deposited on the capture surface. In addition, the above-mentioned spinneret has a nozzle pattern in which the discharge holes of A-1 (long fiber A) and the discharge holes of B-1 (long fiber B) are arranged alternately, and the diameter of the nozzle of long fiber A is The nozzle diameter of long fiber B is The pitch of the nozzles is 8 mm in the vertical direction and 11 mm in the horizontal direction, and the ratio of the number of nozz...

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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Abstract

A nonwoven fabric laminate which sequentially comprises a front surface layer, an intermediate layer and a back surface layer in this order, and which is configured such that: each of the front surface layer and the back surface layer is independently composed of a spun-bonded nonwoven fabric layer that contains filaments of a thermoplastic polyurethane elastomer (A) and filaments of a thermoplastic resin (B); the intermediate layer is composed of a spun-bonded nonwoven fabric layer that contains 50% by mass or more of filaments of a thermoplastic polyurethane elastomer (a); and the storage elastic modulus of the thermoplastic polyurethane elastomer (A) and the storage elastic modulus of the thermoplastic polyurethane elastomer (a) are 25.0 MPa or less, independently.

Description

technical field [0001] The present invention relates to a nonwoven fabric laminate, a stretchable nonwoven fabric laminate, a fiber product, an absorbent article, and a sanitary mask. Background technique [0002] In recent years, nonwoven fabrics have been widely used in various applications because of their excellent air permeability and softness. Therefore, nonwoven fabrics are required to have various properties according to their uses, and at the same time, improvement of the properties is demanded. [0003] For example, nonwoven fabrics used in sanitary materials such as disposable diapers and sanitary napkins, base fabrics of wet compresses, etc. are required to have water resistance and excellent moisture permeability. In addition, stretchability and bulkiness are also required depending on the place of use. [0004] As one of the methods for imparting stretchability to nonwoven fabrics, various methods have been proposed: a method of using a thermoplastic elastome...

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): D04H3/16A41D13/11B32B5/26B32B27/40
CPCD04H3/16D04H3/009B32B5/26B32B7/12B32B5/024B32B2262/0223B32B2262/0215B32B2262/0246B32B2262/0261B32B5/026B32B2555/02B32B2307/30B32B7/09B32B5/06B32B2262/0284B32B2535/00B32B2262/12B32B2250/20B32B2262/0253B32B5/022B32B2307/718B32B2262/0238B32B2262/023B32B2262/14B32B2250/03B32B2307/31D04H3/007B32B27/40A41D13/11A62B18/02A61F13/511A61F13/514D10B2509/026A41D31/185A41D2500/30
Inventor 高久翔一饭滨翔岛田幸一本村茂之
Owner MITSUI CHEM INC
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