Porous film, waterproof and moisture-permeable material, and medical clothing and protective clothing using the same

A waterproof, moisture-permeable, porous membrane technology, which is applied in other medical devices, protective clothing, protective equipment, etc., can solve the problems of damaged barrier properties of woven fabrics, poor barrier properties of protective clothing, and low puncture strength. Excellent comfort, excellent moisture permeability, and the effect of reducing stuffiness

Active Publication Date: 2019-03-08
TORAY IND INC
View PDF4 Cites 0 Cited by
  • 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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Porous film, waterproof and moisture-permeable material, and medical clothing and protective clothing using the same
  • Porous film, waterproof and moisture-permeable material, and medical clothing and protective clothing using the same
  • Porous film, waterproof and moisture-permeable material, and medical clothing and protective clothing using the same

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 an MFR of 4.0 g / 10 min and a homopolymer manufactured by Prime Polymer Co., Ltd. with an MFR of 1,000 g / 10 min were used. 3 parts by mass of polypropylene S10CL, 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 Antioxidant "IRGANOX" (registered trademark) 1010 and "IRGAFOS" (registered trademark) 168 manufactured by BASF Co., Ltd., 0.1 parts by mass were mixed at this ratio, and the raw materials were supplied from the metering hopper to the twin-screw extruder. It was melt-kneaded at 303° C., extruded from a die into a strand form, 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 ...

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.

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
Login to view more

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
water pressureaaaaaaaaaa
strengthaaaaaaaaaa
Login to view more

Abstract

Provides a porous film with excellent barrier properties such as blood barrier properties and virus barrier properties, puncture strength, and moisture permeability. Another object is to provide 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. Provides a porous film with excellent barrier properties such as blood barrier properties and virus barrier properties, puncture strength, and moisture permeability. Another object is to provide 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. The above-mentioned problems are achieved by the following porous membrane: the moisture permeability is 150g / m 2 Porous film with a puncture strength of 100 N / mm or more and blood barrier performance of 4 or more; or a moisture permeability of 150 g / m 2 ・Porous film with a puncture strength of 100 N / mm or higher and a virus barrier of 3 or higher for h or higher; or a moisture permeability of 150 g / m 2 A porous film with h or higher, a puncture strength of 100 N / mm or higher, a blood barrier property of grade 4 or higher, and a virus barrier property of grade 3 or higher.

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

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap