Testing Liquid Permeability in Nonwoven Fabrics.

Researchers developed a system for testing the liquid permeability of a fabric using measurements taken from a range of flow rates during a single run. The system uses liquid/air displacement analysis (LADA) by gravimetry and simultaneous measurement of t

Breathable Nonwoven Composite Barrier Fabric.

A new nonwoven composite barrier fabric engineered by Kappler Safety Group Incorporated protects against bloodborne pathogens and is breathable and comfortable to wear. The composite comprises a microporous thermoplastic film thermally bonded tonlayers of

Nonvwovens and Nonwoven Composites with Fire-Blocking Properties.

Important raw materials for the manufacture of flame resistant nonwoven fabrics include m-aramid, p-aramid, phenolic and melamine resin, modacrylic, polybenzimidazole, polyimide, polyamidimide, and polyphenylene sulfide fibers. Each of these materials has

Breathable Film and Applications.

Breathable film allows the passage of water vapor, but not liquid. The target moisture vapor transmission rate for a 25 micron film should be 1,200-10,000, grams per square meter per day. Monolithic films feature no micropores and no holes and act as a ba

Use of Metallic Wire Fillets for Nonwoven Fabric Manufacture.

The use of metallic wire fillet in carding machines for nonwoven fabric manufacture contributes significantly to productivity and improves the uniformity of the web. A review of these components covers their effects on manufacture, types and functions of fillets, selection of the wire, developments in the use of fillets and fillet mainten..

Lamination Techniques for Lightweight Nonwovens.

DuraFiber, an adhesive melt blowing technology, features a single step process of melt extrusion, fiberization, and laydown on a moving substrate of hot melt adhesive. Unlike spiral, slot, or bead technologies, the DuraFiber process produces a layer of thousands of discontinuous fibers, where each fiber acts as an indenpendent bonding poi..

Hydroentangling: Using Water to Bond Nonwovens.

Conventional bonding methods for nonwoven fabrics include chemical, thermal, and mechanical bonding. Hydroentanglement, a type of mechanical bonding, entangles the fibers with high pressure water jets. Raw materials processed include polyester, rayon, cotton, wood pulp, Nomex, Nomex/Kevlar, acrylic, and polypropylene fibers. Key component..

Nonwovens Applications of Lyocell Fibers.

Now that Courtaulds' Lyocell has been accepted in apparel under the name Tencel, the company is developing lyocell for technical textiles, nonwoven fabrics, and special papers under the trademark Courtaulds Lyocell. Lyocell outperforms other cellulosic st

Absorbent and biodegradable nonwoven uses PVA binder fibres

International Paper Co. believes that it has overcome the problems commonly encountered when using untreated polyvinyl alcohol fibres in combination with other absorbent fibres to form flushable, biodegradable nonwovens for absorbent products. It has produced a PVA containing nonwoven with superior wet strength. The fabric is medically sa..

Automatic winder for high-bulk webs (German)

A fully-automatic winding machine for processing high-bulk webs 10-200 mm thick with fabric weights up to 100-2000 g/㎡ is announced. It is 4 m wide and winds at up to 20 m/min. The rolls can be compared up to a ratio of 5:1. Non-compacted rolls can be processed up to a diameter of 1200 mm. The loose end is struck down by an automatic adh..