Porous film, water-resistant and moisture-transmitting material, and medical garment and protective garment using water-resistant and moisture-transmitting material

A porous film, waterproof and moisture-permeable technology, applied in other medical devices, protective clothing, protective equipment, etc., can solve the problems of woven fabric damage barrier, protective clothing barrier, low puncture strength, etc. Excellent comfort, excellent moisture permeability, and the effect of reducing stuffiness

Active Publication Date: 2016-07-13
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By using the above-mentioned woven fabric as cloth, sweat absorption, water absorption, and good skin feel can be achieved, and the penetration of bacteria and viruses can be suppressed. However, the following problems remain: sometimes the puncture strength is low, and it is difficult to perform on-site operations such as surgery. When the fabric is damaged, the barrier properties will deteriorate, and the barrier properties of protective clothing will deteriorate, etc.

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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  • Porous film, water-resistant and moisture-transmitting material, and medical garment and protective garment using water-resistant and moisture-transmitting material
  • Porous film, water-resistant and moisture-transmitting material, and medical garment and protective garment using water-resistant and moisture-transmitting material
  • Porous film, water-resistant and moisture-transmitting material, and medical garment and protective garment using water-resistant and moisture-transmitting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0158] As a polypropylene resin, 96.5 parts by mass of homopolypropylene manufactured by Prime Polymer Co., Ltd. with MFR = 4.0 g / 10 minutes, and the mass of homopolypropylene S10CL3 manufactured by Prime Polymer Co., Ltd. with an MFR of 1,000 g / 10 min 0.3 parts by mass of N,N'-dicyclohexyl-2,6-naphthalene dicarboxamide (manufactured by Shin Nippon Chemical Co., Ltd., NU-100) as a β-crystal nucleating agent, and BASF Corporation as an antioxidant The produced "IRGANOX" (registered trademark) 1010 and "IRGAFOS" (registered trademark) 168 were mixed in such a ratio that 0.1 parts by mass were supplied from the weighing hopper to the twin-screw extruder, and melt-mixed at 303°C. kneaded, extruded from a die into strands, cooled and solidified in a water bath at 25°C, and cut into small pieces to obtain a polypropylene composition (A).

[0159] The obtained polypropylene composition (A) was supplied to a single-screw melt extruder, and melted and extruded at 220°C. After removing ...

Embodiment 2）

[0163] In the stretching step of Example 1, the film was stretched 5 times in the longitudinal direction at a stretching speed of 400,000% / min (4000 times / min) using ceramic rolls heated to 125°C for preheating. Next, the ends are held and introduced with clips in a tenter-type stretching machine, preheated at 152°C for 3 seconds, and stretched at 150°C at a stretching speed of 4,500% / min (45 times / min). The same conditions as in Example 1 were applied except that the thickness was increased to 9.0 times, and a porous film with a thickness of 20 μm was obtained. Table 1 shows the evaluation results.

Embodiment 3）

[0165] In the extrusion step of Example 1, except that the extrusion amount was adjusted so that the thickness of the porous film became 250 μm, the same conditions as in Example 1 were applied to obtain a porous film with a thickness of 250 μm. Table 1 shows the evaluation results.

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Abstract

The present invention addresses the problem of providing a porous film that has excellent moisture-transmission properties, piercing strength, and barrier properties, including blood barrier properties and viral barrier properties. The present invention also addresses the problem of providing a water-resistant and moisture-transmitting material that uses the porous film, that has excellent barrier properties, including blood barrier properties and viral barrier properties, and that reduces sensations of sweatiness and is highly comfortable as clothing when worn. The abovementioned problems are addressed by a porous film that has a moisture vapor transmission rate of 150 g / (m2*h) or more, a piercing strength of 100 N / mm or more, and level 4 or higher blood barrier properties, or by a porous film that has a moisture vapor transmission rate of 150 g / (m2*h) or more, a piercing strength of 100 N / mm or more, and level 3 or higher viral barrier properties, or by a porous film that has a moisture vapor transmission rate of 150 g / (m2*h) or more, a piercing strength of 100 N / mm or more, level 4 or higher blood barrier properties, and level 3 or higher viral barrier properties.

Description

technical field [0001] The present invention relates to a porous film excellent in barrier properties such as blood barrier properties and virus barrier properties, puncture strength, and moisture permeability. In addition, it relates to a waterproof and moisture-permeable material using the aforementioned porous film, which is excellent in barrier properties such as blood barrier properties and virus barrier properties, reduces stuffiness when worn, and is excellent in wearing comfort. Furthermore, it relates to medical clothing and protective clothing using the aforementioned waterproof and moisture-permeable material. Background technique [0002] Surgical gowns have been known as surgical gowns worn by doctors and nurses. Surgical gowns are not only excellent in bacteria barrier properties and blood barrier properties, but also excellent in dust resistance, but lack air permeability and moisture permeability. Therefore, there are disadvantages of obvious stuffy feeling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00B32B5/24B32B7/02B32B27/32
CPCB32B27/32B32B27/06B32B2307/5825B32B2307/7265B32B2437/00B32B5/02B32B5/022B32B27/12B29C55/005C08J5/18B32B2250/02B32B2250/03B32B2250/40B32B2262/0253B32B2307/31B32B2307/581B32B2307/724B32B2307/726B32B2571/00C08J2323/12B32B7/05A41D13/00A41D13/12B32B5/18B32B5/245B32B2266/025A41D13/002B32B5/24C08J9/00B32B37/06B32B2535/00
Inventor 生驹启久万琢也大仓正寿成田周作武田昌信松村一也
Owner TORAY IND INC
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