Breathable and waterproof non-woven fabric, manufacturing method of breathable and waterproof non-woven fabric, and breathable and waterproof cloth

Patent metadata

Field	Value
Publication number	US-11952690-B2
Application number	US-202117539298-A
Country	US
Kind code	B2
Filing date	Dec 1, 2021
Priority date	Dec 9, 2020
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A breathable and waterproof non-woven fabric is manufactured by a manufacturing method including the following steps. Performing a kneading process on 87 to 91 parts by weight of a polyester, 5 to 7 parts by weight of a water repellent, and 3 to 6 parts by weight of a flow promoter to form a mixture, in which the polyester has a melt index between 350 g/10 min and 1310 g/10 min at a temperature of 270° C., and the mixture has a melt index between 530 g/10 min and 1540 g/10 min at a temperature of 270° C. Performing a melt-blowing process on the mixture, such that the flow promoter is volatilized and a melt-blown fiber is formed, in which the melt-blown fiber has a fiber body and the water repellent disposed on the fiber body with a particle size (D90) between 350 nm and 450 nm.

First claim

What is claimed is:

1. A breathable and waterproof non-woven fabric, manufactured by a manufacturing method, the manufacturing method comprising:
performing a kneading process on 87 to 91 parts by weight of a polyester, 5 to 7 parts by weight of a water repellent, and 3 to 6 parts by weight of a flow promoter, such that a mixture is formed, wherein the polyester has a melt index between 350 g/10 min and 1310 g/10 min at a temperature of 270° C., and the mixture has a melt index between 530 g/10 min and 1540 g/10 min at a temperature of 270° C.; and
performing a melt-blowing process on the mixture, such that the flow promoter is volatilized and a melt-blown fiber is formed, wherein the melt-blown fiber has a fiber body and the water repellent, the water repellent is disposed on a surface of the fiber body, and the water repellent has a particle size (D90) between 350 nm and 450 nm.

2. The breathable and waterproof non-woven fabric of claim 1 , wherein an average fiber diameter of the melt-blown fiber is between 600 nm and 1700 nm.

3. The breathable and waterproof non-woven fabric of claim 1 , wherein an average pore diameter of the breathable and waterproof non-woven fabric is between 1.5 μm and 2.0 μm.

4. The breathable and waterproof non-woven fabric of claim 1 , wherein the water repellent is attached to the surface of the fiber body and is prevented from penetrating into the fiber body.

5. The breathable and waterproof non-woven fabric of claim 1 , wherein the water repellent comprises a silicon dioxide aerogel, and a specific surface area of the silicon dioxide aerogel is between 600 m 2 /g and 800 m 2 /g.

Assignees

• Taiwan Textile Res Inst

Inventors

• Lin Ying-Chi
• Chen Wei-Hung
• Chu Li-Chen
• Chiang Rih-Sheng

Classifications

• D04H3/033 Primary

  reorientation immediately after yarn or filament formation · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• B32B5/265

  characterised by one fibrous or filamentary layer being a non-woven fabric layer · CPC title

• B32B7/14

  applied in spaced arrangements, e.g. in stripes · CPC title

• D06M11/79

  with silicon dioxide, silicic acids or their salts · CPC title