Polypropylene fabric structure, manufacturing method thereof, and protective clothing

Patent metadata

Field	Value
Publication number	US-2024191411-A1
Application number	US-202318181305-A
Country	US
Kind code	A1
Filing date	Mar 9, 2023
Priority date	Dec 13, 2022
Publication date	Jun 13, 2024
Grant date	—

Abstract

A polypropylene fabric structure, a manufacturing method thereof, and a protective clothing including the polypropylene fabric structure are provided. The polypropylene fabric structure includes a polypropylene spunbond nonwoven fabric and a polypropylene meltblown nonwoven fabric. The polypropylene meltblown nonwoven fabric is directly bonded to the polypropylene spunbond nonwoven fabric. The polypropylene meltblown nonwoven fabric is made of a material including polypropylene having a melt flow index between 1700 g/10 min and 2000 g/10 min and a melting point between 155° C. and 165° C.

First claim

What is claimed is:

1 . A polypropylene fabric structure, comprising:
a polypropylene spunbond nonwoven fabric; and a polypropylene meltblown nonwoven fabric directly bonded to the polypropylene spunbond nonwoven fabric, wherein the polypropylene meltblown nonwoven fabric is made of a material comprising polypropylene having a melt flow index between 1700 g/10 min and 2000 g/10 min and a melting point between 155° C. and 165° C.

2 . The polypropylene fabric structure of claim 1 , wherein the material further comprises low melting point polypropylene, and the low melting point polypropylene has a melting point between 129° C. and 135° C.

3 . The polypropylene fabric structure of claim 2 , wherein a total weight of the material is 100 wt %, and the low melting point polypropylene is from 1 wt % to 10 wt %.

4 . The polypropylene fabric structure of claim 1 , wherein the polypropylene spunbond nonwoven fabric has a basis weight of 30 gsm to 60 gsm, and the polypropylene meltblown nonwoven fabric has a basis weight of 30 gsm to 60 gsm.

5 . Protective clothing, comprising the polypropylene fabric structure of claim 1 .

6 . The protective clothing of claim 5 , wherein the material further comprises low melting point polypropylene, and the low melting point polypropylene has a melting point between 129° C. and 135° C.

7 . The protective clothing of claim 6 , wherein a total weight of the material is 100 wt %, and the low melting point polypropylene is from 1 wt % to 10 wt %.

8 . The protective clothing of claim 5 , wherein the polypropylene spunbond nonwoven fabric has a basis weight of 30 gsm to 60 gsm, and the polypropylene meltblown nonwoven fabric has a basis weight of 30 gsm to 60 gsm.

9 . A method of manufacturing a polypropylene fabric structure, comprising:
thermally pressing a polypropylene spunbond nonwoven fabric and a polypropylene meltblown nonwoven fabric, a thermal pressing temperature being greater than 70° C., wherein the polypropylene meltblown nonwoven fabric is made of a material comprising polypropylene having a melt flow index between 1700 g/10 min and 2000 g/10 min and a melting point between 155° C. and 165° C.

10 . The method of claim 9 , wherein thermally pressing the polypropylene spunbond nonwoven fabric and the polypropylene meltblown nonwoven fabric comprises:
making the polypropylene spunbond nonwoven fabric and the polypropylene meltblown nonwoven fabric pass between an upper roller and a lower roller, wherein the polypropylene spunbond nonwoven fabric and the polypropylene meltblown nonwoven fabric are stacked, and the upper roller and the lower roller apply a linear pressure of 25 kg/cm to 120 kg/cm.

11 . The method of claim 10 , wherein roller temperatures of the upper roller and the lower roller are respectively from 70° C. to 130° C.

12 . The method of claim 10 , wherein a roller gap between the upper roller and the lower roller is from 0.04 mm to 0.5 mm.

13 . The method of claim 9 , wherein the material further comprises low melting point polypropylene, and the low melting point polypropylene has a melting point between 129° C. and 135° C.

14 . The method of claim 10 , wherein the material further comprises low melting point polypropylene, and the low melting point polypropylene has a melting point between 129° C. and 135° C.

15 . The method of claim 11 , wherein the material further comprises low melting point polypropylene, and the low melting point polypropylene has a melting point between 129° C. and 135° C.

16 . The method of claim 12 , wherein the material further comprises low melting point polypropylene, and the low melting point polypropylene has a melting point between 129° C. and 135° C.

Assignees

• Formosa Plastics Corp

Inventors

• Chen Kwang-Ming
• Kao Jung-Hung
• Hsieh Kun-Pei
• Liao Han-Chung
• Chen Chun-Tsung
• Chang Chao-Shun
• Hsieh Yao-Tsung
• Wei Chia-Yi

Classifications

• B32B2571/00

  Protective equipment · CPC title

• B32B2437/00

  Clothing · CPC title

• B32B2262/0253

  Polyolefin fibres · CPC title

• B32B2250/20

  All layers being fibrous or filamentary · CPC title

• A41D31/04

  characterised by special function or use (protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes A62B17/00; composition of materials for coverings or clothing affording protection against harmful chemical agents A62D5/00) · CPC title