Spunbond Polypropylene fabrics are produced by depositing extruded, spun filaments onto a collecting belt in a uniform random manner followed by bonding the fibers. The fibers are separated during the web laying process by air jets or electrostatic charges. The collecting surface is usually perforated to prevent the air stream from deflecting and carrying the fibers in an uncontrolled manner.
Bonding imparts strength and integrity to the web by applying heated rolls or hot needles to partially melt the polymer and fuse the fibers together. Since molecular orientation increases the melting point, fibers that are not highly drawn can be used as thermal binding fibers. Polyethylene or random ethylene-propylene copolymers are used as low melting bonding sites. Spunbond products are employed in carpet backing, geotextiles, and disposable medical/hygiene products. Since the fabric production is combined with fiber production, the process is generally more economical than when using staple fiber to make nonwoven fabrics.
Application:
In most industry , hygiene and medical fields for basic protection , such as lab coat, coverall, show cover, face mask , Isolation Gowns, Surgical Gowns, surgical caps, patient bed sheet, etc
Created when soft, spunbond polypropylene is coated with a layer of impervious polyethylene. This lightweight material is ideal for any situation demanding a high level of fluid protection. Provides economical protection to workers exposed to splashes from certain chemicals, blood, and particulates.
Application:
Widely used for protection requires high level of fluid resistant area, such as Surgical Gowns, bed sheets, sleeve covers , etc.
Spunbond-meltblown-spunbond nonwoven fabrics having good softness, drape and extensibility, in addition to strength and barrier, are formed from combinations of bicomponent spunbond fibers having low fiber denier and biconstituent meltblown fibers. The spunbond fibers include an outer sheath portion formed using a first polyolefin and an inner core portion formed using a second polyolefin or polyester. The meltblown fibers include first meltblown fibers formed using a polyolefin and second meltblown fibers formed using a polyester.
Application:
Widely applys to high class protection area of medical, industrial , laboratory , electronical, pharmaceutical, such as : isolation gowns, patient gowns, lab coats, coveralls, procedure gowns, caps and facemasks., boots covers, aprons, napkins and diapers .
Impervious to fluids, polyethylene apparel provides maximum protection cost effectively. Unlike polypropylene, it resembles plastic more than cloth and lacks breathability. Commonly used for brief episodes that require complete fluid protection .
LDPE --- is the low density version of PE. It has an excellent resistance to water, moisture and most organic solvents and chemicals (except ones with aromatic or chlorine content). This has less hardness, stiffness and strength compared to HDPE, but a better ductility.
HDPE --- is the high density version of PE . It is highly resistant to many acids, alcalis and solvents. high density polyethylene, It is harder, stronger and a little heavier than LDPE, but less ductile.
CPE --- Chlorinated polyethylene . It is a type of polymer, which is prepared from the substitution reaction of polyethylene and chlorine under the action of initiation. The product possesses good weatherproof, oil-proof, aging-resistant, chemical-resistant, ozone-resistant and fire-resistant properties
The oldest technique for consolidating fibers in a web is mechanical bonding, which entangles the fibers to give strength to the web. Under mechanical bonding, the two most widely used methods are needlepunching and spunlacing (hydroentanglement). Spunlacing uses high-speed jets of water to strike a web so that the fibers knot about one another. As a result, nonwoven fabrics made by this method have specific properties, as soft handle and drapability.
Microporous+PP is a general purpose protective material that can be used in any non-hazardous applications to protect against dirt,light liquid splashes,and particle.
Tyvek is a brand of flashspun high-density polyethylene fibers, a synthetic material; the name is a registered trademark of DuPont. The material is very strong; it is difficult to tear but can easily be cut with scissors or a knife. Water vapor can pass through Tyvek (highly breathable), but not liquid water, so the material lends itself to a variety of applications: envelopes, car covers, air and water intrusion barriers (housewrap) under house siding, labels, wristbands, mycology, and graphics.