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Spunbond non-woven fabric, non-woven fabric laminate, medical clothing, drape, and meltblown non-woven fabric

A technology of spunbonded nonwovens and meltblown nonwovens, which is applied in the field of spunbonded nonwovens, can solve the problems of reduced blood barrier property and reduced intensity of irradiation, and achieve the purpose of suppressing the deterioration of spinnability and improving the bonding strength. Excellent, high-strength effects

Active Publication Date: 2017-08-18
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, if polypropylene nonwoven fabrics are sterilized by electron beams or gamma rays, the strength tends to decrease in proportion to the irradiation intensity, and at the same time, the barrier properties of blood and the like tend to decrease. Therefore, the use of gas sterilization methods is the current situation.

Method used

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  • Spunbond non-woven fabric, non-woven fabric laminate, medical clothing, drape, and meltblown non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0248]

[0249] Using MFR: 60g / 10min, Density: 0.910g / cm 3 100 parts by mass of propylene homopolymer (PP), high-density polyethylene (PE, product name "HI-ZEX HZ2200J" manufactured by Prime Polymer Co., Ltd., MFR=5.2g / 10 minutes, density 0.964g / cm 3 ) 4 parts by mass, melt-spun at 230°C, piled up the resulting fibers on the collecting surface, and then hot embossed to obtain fibers with a diameter of 18 μm and a mesh weight of 20 g / m 2 spunbond nonwovens (SB).

[0250]

[0251] Use ethylene-1-hexene copolymer [manufactured by Prime Polymer Co., Ltd., product name: EVOLUEHSP50800P, density: 0.951g / cm 3 , MFR: 135g / 10 minutes] 80 parts by mass, and ethylene polymer wax [manufactured by Mitsui Chemicals Co., Ltd., product name "EXCEREX40800", density: 0.980g / cm 3 , weight average molecular weight: 6900, softening point 135 ° C] 20 parts by mass of the mixture, from the spinneret with 760 holes φ0.4mm nozzle, the molten resin is discharged at 0.15g / min per single hole and c...

Embodiment 2

[0255] As the propylene-based polymer composition, in addition to 100 parts by mass of propylene homopolymer (PP) and 4 parts by mass of high-density polyethylene (PE) used in Example 1, an ethylene-based polymer wax [Mitsui Chemicals Co., Ltd. ), product name "Hi-WAX110P", density: 0.922g / cm 3 , weight average molecular weight: 1200, softening point: 113° C.] Except 2 parts by mass, it carried out similarly to Example 1, and obtained each nonwoven fabric. The physical properties of the obtained nonwoven fabric were measured by the methods described above. The results are shown in Table 1.

Embodiment 3

[0257] [Mitsui Chemicals Co., Ltd., product name "EXCEREX48070B", density: 0.900g / cm 3 , Weight average molecular weight: 9000, softening point: 98 degreeC], It carried out similarly to Example 2, and obtained each nonwoven fabric. The physical properties of the obtained nonwoven fabric were measured by the methods described above. The results are shown in Table 1.

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Abstract

A spunbond non-woven fabric comprising fibers formed from a propylene polymer composition that includes 100 parts by mass of a propylene polymer (A), and 1 to 10 parts by mass of an ethylene polymer (B) having a density between 0.93 g / cm3 to 0.98 g / cm3 inclusive, wherein the air permeability measured under flow rate conditions at a differential pressure of 125 Pa generated by a Frazier air permeability tester in accordance with JIS L 1096 (2010) is 500 cm3 / cm2 / s or less.

Description

technical field [0001] The present invention relates to a spunbonded nonwoven fabric, a nonwoven fabric laminate, medical clothing, a drape, and a meltblown nonwoven fabric. Background technique [0002] Compared with nonwoven fabrics using ethylene polymers, nonwoven fabrics using propylene polymers are easier to obtain fine fibers with good spinnability, and have an excellent balance of strength, flexibility, and barrier properties. Nonwoven fabrics using propylene-based polymers are widely used as medical materials, hygienic materials, absorbent articles, packaging materials for various objects, supporting materials, and backing materials due to the above-mentioned properties. [0003] In particular, long-fiber nonwoven fabrics containing propylene-based polymers obtained by spunbond and meltblown methods are used as medical materials because of their excellent combination of lightness, uniformity, strength, softness, and barrier properties. (eg, surgical gowns, drapes, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/16D04H1/559D04H3/007
CPCD04H3/16D04H3/007B32B2307/718B32B7/12B32B2307/54B32B2307/7265B32B2601/00B32B2262/16B32B5/022B32B2307/724B32B2262/0253B32B5/269B32B2250/20D04H1/559A61B46/40A41D13/1209D04H3/011
Inventor 市川太郎关冈裕佑川边邦昭
Owner MITSUI CHEM INC