Nonwoven fabric (NonWovenFabric) is a kind of fabric that does not need spinning and weaving. It is only formed by directional or random support of short fiber or filament to form a fiber network structure, and then reinforced by mechanical, thermal bonding or chemical methods.
Simply put, it is not made up of threads woven and knitted together, but the fibers are bonded together directly by physical means, so that when you get the glue scale inside your clothes, you will find that there are no threads to be pulled out.
Features of non-woven fabrics
Non-woven fabrics have no warp and weft, and are easy to cut and sew, and are light and easy to shape.Nonwovens break through the traditional textile principle, and have the characteristics of short process flow, fast production rate, high yield, low cost, wide use and many sources of raw materials.
Spunlace Nonwoven Fabric For Wet Wipes
Advantages:
light
With polypropylene resin as the main raw material, specific gravity only 0.9, only three-fifths of cotton, fluffy, feel good.
soft
Made of fine fibers (2-3D) light point hot melt molding.The product is soft and comfortable.
Pumping water, ventilation
Polypropylene slice does not absorb water, moisture content is zero, the finished product is good at water, it is composed of 100% fiber with good porosity and air permeability, easy to keep the cloth dry and easy to wash.
Non-toxic and non-irritating
The product is made of food grade materials in accordance with FDA, without other chemical ingredients, stable performance, non-toxic, odorless, and does not irritate the skin.
antichemical
Polypropylene is a chemical blunt material, not moth, and can isolate the presence of liquid bacteria and insect erosion.
Antimicrobial properties
Products with water, not moldy, and can isolate the existence of liquid bacteria and insect erosion, not moldy moth.
Good physical properties
By polypropylene spinning directly laid into a network of thermal bonding, product strength is better than the general staple fiber products, strength no direction, vertical and horizontal strength similar.
Environmental protection
In terms of environmental protection, the raw material of most non-woven fabrics used is polypropylene, while the raw material of plastic bags is polyethylene. Although the two materials have similar names, they are quite different in chemical structure.The chemical structure of polyethylene is very stable and difficult to degrade, so it takes 300 years for plastic bags to decompose.The chemical structure of polypropylene is not firm, the molecular chain can be easily broken, so that it can be effectively degraded, and in a non-toxic form into the next environmental cycle, a non-woven shopping bag in 90 days can be completely decomposed.Moreover, the non-woven shopping bag can be reused more than 10 times, and its pollution to the environment after being discarded is only 10% of that of plastic bags.
Disadvantages:
Compared with textile cloth, its strength and durability are poor.
It cannot be washed like other fabrics.
The fibers are arranged in a certain direction, so they tend to split at right angles, and so on.Therefore, the improvement of production methods is mainly on the improvement of preventing fragmentation.
Static Fabric Needle Punched Non Woven Fabric
Basic principles of nonwoven weaving
Nonwovens are also known as Nonwovens, nonwoven, nonwoven, nonwoven or nonwoven.
Nonwoven technology is a material processing technology which originates from textile but surpasses textile.Different nonwovens have their respective process principles.
In general, the basic principles of nonwoven technology are consistent and can be described by its process, which can be generally divided into the following four processes 
1) fiber preparation;(2) into the net;(3) strengthening;(4) after finishing
Classification of non-woven fabrics
Non-woven fabrics can be divided into:
Spunlace nonwoven fabric
It is jet of high pressure and fine water to a layer or multilayer fiber net, make fiber interweave together, make fiber net can consolidate thereby and have certain strength.
The characteristics of
Flexible entanglement, do not affect the original characteristics of the fiber, do not damage the fiber;
More similar in appearance to traditional textiles;
High strength and low fluff;
High hygroscopicity and fast hygroscopicity;
Soft hand, good drape
Appearance varied;
Long production process, large floor area;
Complex equipment and high water quality requirements;
Energy consumption is large.
The product application
Medical curtain, surgical clothing, surgical cover cloth, medical dressing materials, wound dressing, medical gauze, aviation duster, clothing lining base cloth, coating base cloth, disposable materials, instrumentation advanced duster cloth, electronic industry advanced duster cloth, towel, cosmetic cotton, wet towel, mask covering materials, etc.
Heat-bonded non-woven cloth
It is to point to join fiber shape or powdery hot melt in fiber net agglutinate agglutinate material, fiber net repasses heat melt to cool agglutinate into cloth.
The characteristics of
Surface adhesion hot rolling surface is more smooth, point adhesion hot rolling relatively fluffy.
The product application
Production of infant diapers and women's sanitary napkins covering materials, ointment base cloth, tape base ABD pad covering materials, clothing lining, mask, etc.
Pulp flow into a network of non-woven cloth
Also known as dust-free paper, dry papermaking non-woven cloth.It is to use airflow into the network technology to open the wood pulp fiberboard into a single fiber state, and then use airflow method to make the fiber agglutinate in the screen, fiber network reinforcement into cloth.
The characteristics of
It is characterized by good loft, soft feel, wet strength and abrasion resistance due to the paper, hygroscopic properties.
The product application
Medical hygiene materials, especially high absorbent disposable hygiene products (such as diapers, sanitary pads, wet gluten, wipe cloth, etc.).
Wet non-woven cloth
It is to loosen the fiber raw materials in the water medium to form single fiber, mix different fiber raw materials at the same time, and make fiber suspension slurry. The suspension slurry is transported to the mesh-forming mechanism, and the fiber becomes a net under the wet state and then strengthens into cloth.
The characteristics of
High production speed, up to 400m/min;
Short fibers can be fully utilized, such as length less than 20mm;
Different quality fibers want to mix almost unlimited;
The uniformity of product fiber network is good.
Water consumption is big, one-time investment is high.
The product application
Special paper: dust/liquid filter paper, tea bag;
Industrial use: filter, insulation material, sound-absorbing material;
Medical use: medical backing, medical tape, surgical bag wrapping materials;
Civilian use: wallpaper, etc.
Spun-bonded nonwoven fabric
It is after polymer has been extruded, stretched and formed continuous filament, filament laid into a network, fiber network after its own adhesion, thermal adhesion, chemical adhesion or mechanical reinforcement method, so that the fiber network into non-woven cloth.
The characteristics of
The web consists of continuous filaments;
Excellent tensile strength;
Technology changes more, can adopt a variety of methods of reinforcement;
Filament densification varies widely;
Feel poorer, fiber net evenness poorer.
The product application
Polypropylene (PP) : geotextiles, tufted carpet substrates, coating substrates, medical and health materials, disposable product coating materials, etc.
Polyester (PET) : filter material, lining material, tufted carpet substrate, agricultural materials, packaging materials, etc.
Melt-blown nonwoven fabric
After the polymer has been extruded and left the spinneret hole, the melt is blown into ultrafine fibers under the action of high-speed hot air, which flies to the net at the speed of extruding together, and then becomes non-woven fabric through thermal bonding or self-bonding reinforcement.
The characteristics of
The web consists of very fine, but disconnected, shorter fibers;
Fine evenness of fiber net, soft touch;
Good filtration performance and fluid absorption performance;
Fiber mesh strength difference.
The product application
Filter material, medical and health material, clothing material, battery diaphragm material, wipe material.
Needled non-woven cloth
It is a kind of dry non-woven cloth, needling non-woven cloth is to use the puncture effect of the needle to consolidate the fluffy fiber net into cloth.
The characteristics of
Suitable for a variety of fibers, mechanical postpartum do not depend on which fiber you choose the original characteristics;
The original characteristics of fiber were not affected.
Flexible entanglement between fibers with good dimensional stability and elasticity;
Good permeability and filtration performance;
Feel plump and fluffy;
According to the requirements of manufacturing a variety of collection patterns or three-dimensional molding products.
Post time: Oct-18-2019