Non-Woven Fabrics

Non-woven Fabric is a fabric-like material made from long fibers, bonded together by chemical, mechanical, heat or solvent treatment. The term is used in the textile manufacturing industry to denote fabrics, such as felt, which are neither woven nor knitted. Nonwoven materials typically lack strength unless densified or reinforced by a backing.

Spunlaid Non-Wovens

Spunlaid non-wovens are made in one continuous process. Fibers are spun and then directly dispersed into a web by deflectors or can be directed with air streams. This technique leads to faster belt speeds, and cheaper costs. Several variants of this concept are available. Meltblown is often used as filter media, being able to capture very fine particles. Spunlaid is bonded by either resin or thermally.

Bonding

Both staple and spunlaid non-wovens would have no mechanical resistance in and of themselves, without the bonding step. Several methods can be used:

• thermal bonding using a large oven for curing calendering through heated rollers (called spunbond when combined with spunlaid), calenders can be smooth faced for an overall bond or patterned for a softer, more tear resistant bond
• one unusual polyamide spunbond (Cerex) is self-bonded with gas-phase acid

Shieldex^® Non-Wovens

All SHIELDEX^® fabrics use an unique metal to polyamide bond.  Metals used are Silver (Ag), Copper (Cu), Nickel (Ni) and Tin (Sn). Different coatings, including corrosion protection, enhanced EMI (Electromagnetic Interference) shielding effectiveness, and/or environmental concerns. Different adhesives can be added upon request. Applications include RF shileding wall paper, filtration media, and heating elements.

The uses of plated fabrics are endless. Let us assist in your next application.

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