Nonwoven - what are Nonwoven

Nonwoven Our Presenter… Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh prepared by : Mazadul Hasan sheshir Presentation Content… • What Are Nonwoven…??? • Properties Of Nonwoven, • How They’re Made, • Details About Web formation, • Web bonding, • Finishing Treatments, • Application Of Nonwoven. What Are Nonwoven…???  Nonwovens are unique,high-tech,engineeringed fabrics made from fibers Definition Of Nonwoven : “A nonwoven is a sheet of fibers, continuous filaments, or chopped yarns of any nature or origin, that have been formed into a web by any means, and bonded together by any means, with the exception of weaving or knitting”   Abrasion resistant  Absorbent  Color fast  Dry cleanable  Durable  Filtration  Flame resistant  Long-lasting  Smooth  Washable  Weatherproof  Soft  Strong  Tear resistant How They’re Made         Web formation  Web bonding  Finishing Treatments Steps Of web Formation: At Four Step They are made. That’s Have been given below: ! There are two methods of drylaying: "#$% "&$' Spunmelt  (  )&   (  * Spunlaid : )+   Wetlaid:  '    [...]... characterized by dozens of end use areas and applications  Nonwovens can be engineered very precisely to meet exacting specifications and stringent regulatory requirements for the filtration of air, liquid, bacteria, dust, gas and a myriad of other areas  Some examples of where nonwovens are used:  Air filtration  Liquid filtration  Automotive filtration MEDICAL: Nonwovens are extensively used in the... Bonding: There are three basic types of bonding: 1 Chemical, 2 Thermal, & 3 Mechanical Chemical bonding (adhesion bonding): Chemical bonding mainly refers to the application of a liquid based bonding agent to the web Three groups of materials are commonly used as binders-acrylate polymers and copolymers, styrene-butadiene copolymers and vinyl acetate ethylene copolymers Water based binder systems are the... infections and diseases   Some examples of where nonwovens are used: Surgical: disposable caps, gowns, masks, scrub suits and shoe covers  Bed linen   The advantages of using nonwovens  Protection against    Lab coats  Incubator mattress etc Custom-made for the operating theatre strong yet light in weight  optimal fluid absorbency  Drug delivery  air-borne particles  Fixation tapes  dry or wet... to existing properties  Nonwovens can be made conductive, flame retardant, water repellent, porous, antistatic, breathable, absorbent and so on Converting  The nonwoven fabric is now complete and in a roll Converters can take it a stage nearer its final form by slitting, cutting, folding, sewing or heat sealing  In this way, the quality, properties and size of the converted nonwoven products can be... fabrics AGRICULTURE& HORTICULTURE  Nonwovens are used effectively for optimizing the productivity of crops, gardens and greenhouses  In horticultural applications, nonwovens protect the plants against temperature extremes by day and by night, thus creating the foundation for earlier harvests with excellent results FILTRATION  One of the fastest growing segments in the nonwovens industry, filtration... strengthening of the web is achieved by inter-fibre friction as a result of the physical entanglement of the fibres.  There are two major types of mechanical bonding: 1 Needlepunching, & 2 Hydro-entanglement Needlepunching can be used on most fibre types Specially designed needles are pushed and pulled through the web to entangle the fibres Webs of different characteristics can be needled together to... controlled heating There are several thermal bonding systems in use:  Calendering uses heat and high pressure applied through rollers to weld the fibre webs together at speed  Through-air thermal bonding makes bulkier products by the overall bonding of a web containing low melting fibres Mechanical bonding: In mechanical bonding the strengthening of the web is achieved by inter-fibre friction as a result... range of end-uses Application Of Nonwoven Absorbent hygiene products: Modern disposable absorbent hygiene products have made an important contribution to the quality of life and skin health of millions of people Such as: baby diapers, feminine hygiene products and adult incontinence products etc benefit from the softness, smoothness, leakage prevention, strength and protection provided by nonwoven fabrics... delivery  air-borne particles  Fixation tapes  dry or wet contact exchange of air, body heat and moisture  Breathability  Abrasion resistance and lint free PACKAGING Some examples of where nonwovens are used   Food contact packaging Food wrap: meat, cheese and fish  Absorbent pads  Sheets, bags, sacks, wraps for delicate products (e.g electronic products, car bumpers, leather goods)  Bulk... Protection   Sacks and bags  Easy to convert into pads and shapes, Envelopes   Transportation  Easy to recycle and compost, Sacks, bags & sachets   Tea & coffee bags  The advantages of using nonwovens Surabhi Premium Non Woven Rice Packaging Bag Thanks To All For staying with Us… Allah Hafez… . Of Nonwoven, • How They’re Made, • Details About Web formation, • Web bonding, • Finishing Treatments, • Application Of Nonwoven. What Are Nonwoven ???  Nonwovens are unique,high-tech,engineeringed. Nonwoven Our Presenter… Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh prepared by : Mazadul Hasan sheshir Presentation Content… • What Are Nonwoven ??? • Properties. Nonwoven ???  Nonwovens are unique,high-tech,engineeringed fabrics made from fibers Definition Of Nonwoven : “A nonwoven is a sheet of fibers, continuous filaments, or chopped yarns of any nature or