What is Non-Woven Fabrics?
Nonwovens do not depend on the interlacing of yarn for internal
cohesion. Intrinsically they have neither an organized geometrical
structure. They are essentially the result of the relationship between
one single fibre and another. This provides nonwoven fabrics with
characteristics of their own, with new or better properties (absorption,
filtration) and therefore opens them up to other applications.
Introduction to Non-Woven Fabrics
Nonwovens are in fact products in their own right with their own
characteristics and performances, but also weaknesses. They are around
us and one uses them everyday, often without knowing it. Indeed they are
frequently hidden from view.
Nonwovens can be made absorbent, breathable, drapeable, flame resistant, heat sealable, light, lint-free, mouldable, soft, stable, stiff, tear resistant, water repellent, if needed. Obviously though, not all the properties mentioned can be combined in a single nonwoven, particularly those that are contradictory.
Nonwovens can be made absorbent, breathable, drapeable, flame resistant, heat sealable, light, lint-free, mouldable, soft, stable, stiff, tear resistant, water repellent, if needed. Obviously though, not all the properties mentioned can be combined in a single nonwoven, particularly those that are contradictory.
Applications of Non-Woven Fabrics
- Personal care and hygiene as in baby diapers, feminine hygiene products, adult incontinence items, dry and wet pads, but also nursing pads or nasal strips.
- Healthcare, like operation drapes, gowns and packs, face masks, dressings and swabs, osteomy bag liners, etc.
- Clothing: interlinings, insulation and protection clothing, industrial workwear, chemical defence suits, shoe components, etc.
- Home: wipes and dusters, tea and coffee bags, fabric softeners, food wraps, filters, bed and table linen, etc.
- Automotive: boot liners, shelf trim, oil and cabin air filters, moulded bonnet liners, heat shields, airbags, tapes, decorative fabrics, etc.
- Construction: roofing and tile underlay, thermal and noise insulation, house wrap, underslating, drainage, etc.
- Geotextiles: asphalt overlay, soil stabilization, drainage, sedimentation and erosion control, etc.
- Filtration: air and gas, Hevac, Hepa, Ulpa filters
- Industrial: cable insulation, abrasives, reinforced plastics, battery separators, satellite dishes, artificial leather, air conditioning, coating.
- Agriculture, home furnishing, leisure and travel, school and office etc.
Origin and Advantages of Non-Wovens
The origins of nonwovens are not
glamorous. In fact, they resulted from recycling fibrous waste or second
quality fibres left over from industrial processes like weaving or leather
processing. They also resulted from raw materials restrictions e.g. during and
after the Second World War or later in the communist dominated countries in
Central Europe. This humble and cost dominated origin of course lead to some
technical and marketing mistakes; it is also largely responsible for two still
lingering misconceptions about nonwovens: they are assumed to be (cheap)
substitutes; many also associate them with disposable products and for that
reason did consider nonwovens as cheap, low quality, items.
Not all nonwovens end in disposable
applications. A large part of production is for durable end-uses, like in
interlinings, roofing, geotextile, automotive or floor covering applications
etc. However, many nonwovens especially light-weight ones are indeed used as
disposable products or incorporated into disposable items. In our view this is
the ultimate sign of efficiency. Disposability is only possible for
cost-efficient products that concentrate on the essential required
characteristics and performances and provide them without unnecessary frills.
Most nonwovens, disposables or not, are
high-tech, functional items, e.g. with ultra-high absorbency or retention for
wipes, or with softness, strike-through and no wetback properties for those
used into hygiene articles, with outstanding barrier characteristics for
medical applications in the operation room, or better filtration possibilities
because of their pores dimension and distribution, etc. They weren’t manufactured
with the aim of disposability but in order to fulfil other requirements. They
mainly became disposable because of the sectors they are used in (hygiene,
healthcare) and of their cost efficiency. And disposability very often creates
an additional benefit to the users. As disposable items have never been used
before, there is then a guarantee that they do possess all the properties
required as opposed to reused laundered fabrics.
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