Manufacturing Principle Of Automotive Non-Woven Fabrics

One Non-woven fabrics It means that needles are needled without knitting. fibre Cloth that is wound together or partly adhered together.

2. in the early twentieth Century, people invented the principle of making non-woven fabrics. The first production on the factory scale was the American Felt Co. in 1939, and the production of non-woven fabrics in Europe, Germany, KARLFREUDENBERG and so on in 1944, Felt.

Japan's nonwovens production started in 1958 in DAINIKKU Co., and 7 companies joined in the next 2 years. Now the use, materials and methods of manufacture of non-woven fabrics have increased, and have become an integral part of our lives. The secret is that flexibility, thickness, various properties and shapes can be created freely according to different raw materials and processing methods.

3. non-woven fabric has many advantages: 1) aeration 2) filter 3) heat preservation 4) water absorbency 5) waterproof 6) flexible 7) not messy 8) good handle, soft and 9) lightweight, 10) elastic, recoverable).

The disadvantages are: 1) the strength and durability of textile fabrics are 2 lower than those of textile fabrics; 3) they can not be cleaned like other fabrics; the fibers are arranged in a certain direction, so it is easy to crack in right angles. Therefore, the recent improvement of production methods is mainly focused on the improvement of prevention of division.

4. the manufacturing methods can be roughly divided into wet method (7% in Japan, 1~2% in the world) and dry method without water (93% in Japan and 98~99% in the world). Other methods are hot air or hot pressing fixation (hot bonding, wire bonding, etc.) and the use of adhesives (chemical bonding) and so on.

The manufacturing methods of Japan in 2001 are as follows:

Chemical bonding 42975 tons (14%)

Hot bonding 40610 tons (14%)

Needle punching 86127 tons (29%)

16431 ton (.6%)

81248 tons (27%)

Other dry method 9022 tons (.3%)

Wet method 21625 tons (.7%)

Total 298038 tons (100%)

Wire bonding is used only for long fibers. All other short fibers are used.

The domestic share of different raw materials in the past 5.2001 years is as follows:

Polyester 104757 tons (33%)

Polypropylene 81678 tons (26%)

　　 nylon 13370 tons (4%)

Other synthetic fibres 40062 tons (13%)

Viscose rayon 17735 tons (6%)

Wood pulp 20.