SECONDARY HEAT TREATMENT OF CARPET YARNS USING MICROWAVE RADIATION.

Secondary heat treatment of some polymers used in carpet yarns decreases shrinkage in downsteam processes, particularly dyeing. heat treatment occurs after the yarn has been drawn and textured. The yarn passes through a low-tension zone where it is heated by microwaves. Heat treatment relaxes stresses in the fiber structure that would lea..

GLASS FIBERS IN CONCRETE.

Vetrotex claims that the addition of as little as 1 percent glass fiber can overcome the problem of cracking in concrete. The glass fibers work to maintain the concrete's plasticity. Limit segregation, and stop the propagation of cracks. The use of concrete with glass fibers in all concrete applications, including underground pipes and sp..

FISCHER DOTTIKON MARKETS RAMIE AS REINFORCEMENT FOR COMPOSITES

Fischer Dottikon is marketing ramie as a reinforcement material for ethoxylene resin and geotextiles. Ramie, which is abundant in Third World countries, has high tensile strength, low elongation, good tear strength, and high adhesion to many matrixes. Doffikon is marketing the fiber under the trade name Firon. The fibers average about 8 d..

ALLIED INTENSIFIES NYLON 6 CARPET RECYCLING PROGRAM

In 1992, 3.5 billion pounds of carpet will be disposed, according to industry estimates. Allied Fibers is focusing its attention on recycling the used nylon 6 carpeting that is crowding our nation's landfills. Collection and retrieval of the used carpet carpet presents the biggest problem facing potential recycling efforts. The goal set u..

ENVIRONMENAL RECYCLING SUGGESTS ALTERNATE METHOD

The Kansas City area is served by an unusual company, Environmental Recycling Services (ERS), which hauls away post-consumer carpet directly from either resident or commercial buildings. ERS claims the used carpet on the same day that new carpet is installed. For sanitary reasons, old carpets are not hauled away in the same vehicle that d..

Fast Cure Reactive Hot Melt Adhesives Maintain Melt Stability

Researchers studied ways to increase the curing rate of reactive hot melt (RHM) adhesives. High cure rates and good melt stability are contrary properties in RHM adhesives. A proprietary catalyst added to the adhesive achieved both these properties. Test samples were prepared with particle board and metal sheet, glued with different adhes..

Methods for measuring the pore size of filter fabrics

Dry, wet and optical methods for the pore-size testing of filter fabrics are reviewed.

Banana fibres as reinforcement for building products

The use of banana fibre as a reinforcing material for autoclaved cement mortar, air-cured cement and air-cured plaster is reported. The processing of the fibres and the properties of the reinforced materials containing 8％ fibre by mass are discussed. There are 14 references.

High-tech wool membrane laminate

Fashion-oriented casural outerwear based on wool shell fabrics and Sympatex interlinings is being introduced. The laminate is the result of a joint Akzo/IWS project. The Sympatex membrane is used as a drop lining laminated to a nonwoven or warp-knitted carrier which is then positioned between the outer shell and inner lining. A comfortabl..

Quality and quality control systems

The theory underlying quality and quality control is examined in relation to textile products.