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What is non-woven

What is non-woven

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  • Time of issue:2020-04-26
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(Summary description)The exact name of non-woven fabric should be non-woven fabric, or non-woven fabric. Because it is a fabric formed without spinning and weaving, it is just oriented or randomly braided short fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production speed, high output, low cost, wide use, and many raw material sources. Its main uses can be roughly divided into:

What is non-woven

(Summary description)The exact name of non-woven fabric should be non-woven fabric, or non-woven fabric. Because it is a fabric formed without spinning and weaving, it is just oriented or randomly braided short fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production speed, high output, low cost, wide use, and many raw material sources. Its main uses can be roughly divided into:

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-04-26
  • Views:0
Information

The exact name of non-woven fabric should be non-woven fabric, or non-woven fabric. Because it is a fabric formed without spinning and weaving, it is just oriented or randomly braided short fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production speed, high output, low cost, wide use, and many raw material sources. Its main uses can be roughly divided into:

(1) Medical and sanitary non-woven fabrics: surgical gowns, protective clothing, sterilization wraps, masks, diapers, civilian wipes, wipes, wet facial towels, magic towels, soft towel rolls, beauty supplies, sanitary napkins, hygiene Pads, disposable sanitary cloths, etc .;

(2) Non-woven fabric for court decoration: wall covering, tablecloth, bed sheet, bed cover, etc .;

(3) Nonwoven fabrics for clothing: lining, adhesive lining, flakes, shaped cotton, various synthetic leather base fabrics, etc .;

(4) Industrial non-woven fabrics; filter materials, insulation materials, cement packaging bags, geotextiles, covering cloths, etc .;

(5) Agricultural non-woven fabrics: crop protection cloth, seedling raising cloth, irrigation cloth, thermal insulation curtain, etc .;

(6) Other non-woven fabrics: space cotton, thermal insulation and sound insulation materials, linoleum, cigarette filter, tea bags, etc.

Classification of non-woven fabrics:

First, spunlace non-woven fabric

The spunlace process is to spray high-pressure fine water flow onto one or more layers of fiber meshes, so that the fibers are entangled with each other, so that the fiber meshes can be strengthened and have a certain strength.

Second, heat-sealing non-woven fabric

The heat-bonded non-woven fabric refers to adding fibrous or powdery hot-melt adhesive reinforcement materials to the fiber web, and the fiber web is then heated, melted, cooled and consolidated into a cloth.

Three, pulp airlaid nonwoven fabric

Air-laid non-woven fabric can also be called dust-free paper, dry paper-making non-woven fabric. It uses air-laid technology to open the wood pulp fiber board into a single fiber state, and then uses the air-flow method to condense the fibers on the screen-forming curtain, and then strengthen the fiber into a cloth.

Fourth, wet nonwoven fabric

The wet non-woven fabric is to open the fiber raw materials in the aqueous medium into single fibers, and at the same time mix the different fiber raw materials to make a fiber suspension slurry, and the suspension slurry is sent to the web forming mechanism, and the fibers are netted under wet conditions. Reinforced into cloth.

Fifth, spunbond non-woven fabric

Spunbond non-woven fabric is after the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a net, and the fiber web is then subjected to self-bonding, thermal bonding, chemical bonding or mechanical reinforcement methods to make The web becomes nonwoven.

Sixth, melt-blown non-woven fabric

Process of melt-blown non-woven fabric: polymer feeding --- melt extrusion --- fiber formation --- fiber cooling --- web forming --- reinforced into cloth.

Seven, needle punched non-woven fabric

Needle-punched non-woven fabric is a kind of dry-process non-woven fabric. Needle-punched non-woven fabric uses the puncture effect of the needle to strengthen the fluffy web into a cloth.

8. Stitched non-woven fabric

Stitch-bonded non-woven fabric is a kind of dry-laid non-woven fabric. The stitch-bonded method is to use warp-knitted coil structure to web, yarn layer, non-woven material (such as plastic sheet, plastic thin metal foil, etc.) or their combination The body is reinforced to make a non-woven fabric

The following is some non-woven development forecast information for reference:

1. The non-woven textile industry has made great progress in recent years--

As of 1998, the world's non-woven fabric consumption has reached 2.4 million tons. In 1970, its consumption was only 400,000 tons, and by 2007, its consumption is expected to reach 4 million tons.

Non-woven fabric manufacturers are mainly concentrated in the United States (41% of the world), Western Europe accounts for 30%, Japan accounts for 8%, China's production accounts for only 3.5% of the world, but its consumption is 17.5% of the world . It is estimated that by 2007, China's output will reach 7% of the world's output and its consumption will increase to 21% of the world's.

At present, man-made fibers still dominate the production of non-woven fabrics, and this situation will not change much until 2007. 63% of the fibers used in the production of nonwovens worldwide are polypropylene, 23% are polyester, 8% are viscose, 2% are acrylic fibers, 1.5% are polyamides, and the remaining 3% are other fiber.

In recent years, the application of non-woven fabrics in hygienic absorbent materials, medical, transportation, and shoemaking textile materials has increased significantly.

2. Production and consumption of non-woven fabrics

The global consumption of non-woven fabrics was 800,000 tons in 1983, and increased to 110 tons in 1985, 1.4 million tons in 1988, and in 1998, the global consumption of non-woven fabrics reached 2.4 million tons. Its annual consumption can reach 3.7 million tons.

The consumption of man-made fibers used in various textiles was 16.9 million tons in 1983, increased to 20.4 million tons in 1988, and reached 30.4 million tons in 1998. It is estimated that by 2005, its consumption will be 37 million tons in 2007 It can reach 38.3 million tons per year.

Man-made fiber consumption growth rate in the production of non-woven fabrics is expected to reach 10% by 2005, and will reach 10.4% by 2007. Part of the reason for the rapid growth of nonwovens industry consumption is the increase in auxiliary industries in China, Southeast Asia, Latin America and the Middle East.

Third, the factors that affect the growth rate of non-woven fabrics-

All factors that affect the growth of man-made fibers can have a more or less certain effect on textiles that use man-made fibers as raw materials, of which the greatest impact is on non-woven textiles.

Population growth factors have less influence on non-woven fabrics than other textiles used in clothing. But if you consider the important application of non-woven fabrics in baby diapers, population growth is also an important factor.

Part of the replacement of natural fibers has a greater impact on textiles, but has little effect on non-woven fabrics, because the production of non-woven fabrics basically depends on man-made fibers.

The commercial development of man-made fibers and the professional application of non-woven fabrics: Due to the establishment of international economic treaties, trade in microfibers, composite fibers, biodegradable fibers and new polyester fibers has grown. This has a great impact on non-woven fabrics, but not on apparel and knitted textiles.

Replace textiles and other supplies: This includes being replaced by non-woven textiles, knitted textiles, plastic films, polyurea foam, wood pulp, leather, etc. This is determined by the cost and performance requirements of the product.

Introduce new, more economical and more efficient production processes: namely, make various items from polymers, the application of competitive new non-woven fabrics, and the introduction of special fiber and non-woven textile additives.

The three major fibers used in the production of non-woven fabrics are polypropylene fibers (62% of the total), polyester fibers (24% of the total) and viscose fibers (8% of the total). Between 1970 and 1985, viscose fibers were used most in the production of nonwoven fabrics. But in the past 5 years, in the fields of hygienic absorbent materials and medical textiles, the application of polypropylene fibers and polyester fibers has begun to dominate. In the early nonwovens production market, the amount of nylon was very large. Since 1998, the amount of acrylic fibers has increased, especially in the field of artificial leather manufacturing.

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