SYNTHETIC ELASTOMETRIC YARN.

In Japan, elastomeric yarn is finding new applications. As a result. production facilities for polyurethane elastomeric yarn are increasing their output. New products include Du Pont-Torya's Opelon, Asahi's Roica, Toyoba's Espa, Kuraray's Spantel, Fuji Spinning's Fujibo Spandex, Nisshinbo's Mobilon, and Kanebo's Lubell and Novac.

DEVELOPMENTS IN RAYON FIBERS FOR NEW NONWOVENS.

For several years, Courtaulds has pursued an extensive development program for viscose rayon processing in an effort to adapt fiber performance to market needs. A summary of the firm's advances in wet and dry processing of MXS fibers and microfibers of nonwovens examines new production methods and their possibilities for the future.

POLYESTER SUPERMICROFIBERS AND THEIR USE IN APPAREL TEXTILES.

A review of developments in microfiber manufacturing technology focuses on polyester "supermicrofibers" that are initially produced as bicomponent fibers and then split apart using alkali treatments. Currently, there are two ways to manufacture supermicrofibers: by splitting a fiber in a multiradical manner or by dissolving sections away ..

POLYMERIZATION METHODS FOR SUPERABSORBENT POLYACRYLATES.

A review of different polymerization methods for superabsorbent polymrs (SAPs) focuses on manufacturing processes. Primary applications for SAPs include diapers, panty liners, sanitary napkins, tampons, and incontinence pads. Te commercial polymer derives from acrylic acid and a crosslinker in aqueous solution. Sodium hydroxide neutralize..

CHARACTERIZATION OF A NEW SUPERABSORBENT POLYMER (SAP) GENERATION.

SAPs consist of partially neutralized and crossinked polyacrylates. Manufacturers incorporate SAPs into diapers, panty liners, sanitary napkins, tampons, and incontinuence pads. SAPs absorb aqueous fluids in other applications, such as soil condutioners, cable shielding, and waterproof packaging. An overview of current research and develo..

WHY IS JUTE FRIENDLY TO THE ENVIROMENT?

Although large areas in th tropics are used of rgrowing jute, China, India, and Bangladesh are the major producers of commercial crops. In many applications, jute is a satisfactory substitute for manmade fibers. A major advantage to this substitution is that jute is a renewable, relatively non pollution gresource. Some of the byproducts o..

PROGRESS ON DEVELOPMENT OF A COTTONSEED EXTRACTION PROCESS USING ISOPROPYL ALCOHOL.

The Clean Air Act Amendments of 1990 lists n-hexane, the most common solvent used in cottonseed extraction, as a hazardous air pollutant because of its flammability. Although many alternative solvents have been tested, most have not met industrial requirements. In the short-term, branched and short chain alkane mixtures containing less th..

Step by Step to a Modern Mill.

Zellweger Uster's Delta 200 is the most flexible and efficient drawing machine currently on the market. Warp yarns are automatically drawn into either flat steel heddles with open C or J shape end eyes or flat steel heddles with closed dyes. A drawing capacity of up to 200 yarns per minute is possible from one or two warp sheets. Uster's ..

World Quality Guide.

Pulp && Paper's World Quality Guide is an alphabetical directory of pulp and paper manufacturers through the world. The guide includes an ISO 9000 section that provides information on the certification status of industry suppliers. Listings include company address, telephone and fax numbers, and a short description of products and service..

Analysis of Effective Thermal conductivity of Fibrous Materials.

A two sided hot plate measured the effective thermal conductivity of Nomex fibers under a variety of expericmental conditions, including different mean temperatures, fill gases, and atmospheric pressures. After laboratory testing, researchers derived two mathematical models from the data. Subsequent analysis showed that the effective ther..