Breathable and waterproof cloth

Patent metadata

Field	Value
Publication number	US-12534835-B2
Application number	US-202418426583-A
Country	US
Kind code	B2
Filing date	Jan 30, 2024
Priority date	Dec 9, 2020
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

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 cloth, comprising:
a breathable and waterproof non-woven fabric manufactured by a 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, and the water repellent is disposed on the fiber body;
wherein the breathable and waterproof non-woven fabric comprises pores and has an average pore diameter between 1.5 μm and 2.0 μm, the breathable and waterproof non-woven fabric comprises a plurality of the melt-blown fiber, and the plurality of the melt-blown fiber have an average fiber diameter between 600 nm and 1700 nm;
a first adhesive layer disposed on a first surface of the breathable and waterproof non-woven fabric having a plurality of adhesive dots; and a first base fabric disposed on the first surface of the breathable and waterproof non-woven fabric through the adhesive dots.

2 . The breathable and waterproof cloth of claim 1 , wherein the adhesive dots are disposed on the first surface of the breathable and waterproof non-woven fabric at intervals, and a distribution density of the adhesive dots is between 8 pcs/mm 2 and 10 pcs/mm 2 .

3 . The breathable and waterproof cloth of claim 1 , wherein a diameter of each of the adhesive dots is between 90 μm and 110 μm.

4 . The breathable and waterproof cloth of claim 1 , wherein a viscosity of the first adhesive layer at a temperature of 90° C. is between 8000 cP and 9000 cP.

5 . The breathable and waterproof cloth of claim 1 , wherein the first base fabric is a woven fabric.

6 . The breathable and waterproof cloth of claim 1 , further comprising:
a second adhesive layer disposed on an entire surface of a second surface of the breathable and waterproof non-woven fabric; and a second base fabric disposed on the second surface of the breathable and waterproof non-woven fabric through the second adhesive layer, wherein the second base fabric is a knitted fabric.

7 . The breathable and waterproof cloth of claim 1 , wherein the water repellent has a particle size (D90) between 350 nm and 450 nm.

8 . The breathable and waterproof cloth 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

• D06M2200/12

  Hydrophobic properties · CPC title

• B32B2307/73

  Hydrophobic · CPC title

• B32B2307/724

  Permeability to gases, adsorption · CPC title

• B32B2255/20

  Inorganic coating · CPC title

• B32B2255/02

  on fibrous or filamentary layer · CPC title