Abstract

A bi-regional fiber with a cellulosic core and a wax outer sheath is disclosed. The sheath can comprise high melting temperature wax. The fiber may be produced by processing the natural fiber at temperatures less than 70°C. The fiber can be processed in a standard manner such as, for example, a Keir process which may include bleach at approximately 100°C with a wax subsequently added at a temperature sufficient to disperse the wax over the fiber surface. The fibers are ignition resistant as measured by industry standard tests. The wax may comprise from about 0.4 to 25 percent or greater of the fiber by weight. The wax may be natural wax, synthetic or emulsified wax or blends thereof. The bi-regional fibers can be blended with other fibers including BRCF fibers to create fire resistant fabrics including clothing, blankets and household materials.

IPC Classes  ?

• D01F 8/02 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from cellulose, cellulose derivatives, or proteins
• D06M 15/327 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
• D06M 15/70 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment combined with mechanical treatment
• D06P 5/00 - Other features in dyeing or printing textiles or dyeing leather, furs or solid macromolecular substances in any form

Abstract

A bi-regional fiber with a cellulosic core and a wax outer sheath is disclosed. The sheath can comprise high melting temperature wax. The fiber may be produced by processing the natural fiber at temperatures less than 70°C. The fiber can be processed in a standard manner such as, for example, a Keir process which may include bleach at approximately 100°C with a wax subsequently added at a temperature sufficient to disperse the wax over the fiber surface. The fibers are ignition resistant as measured by industry standard tests. The wax may comprise from about 0.4 to 25 percent or greater of the fiber by weight. The wax may be natural wax, synthetic or emulsified wax or blends thereof. The bi-regional fibers can be blended with other fibers including BRCF fibers to create fire resistant fabrics including clothing, blankets and household materials.

IPC Classes  ?

• B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
• D02G 3/22 - Yarns or threads characterised by constructional features
• D02G 3/36 - Cored or coated yarns or threads
• D21H 17/60 - Waxes