Processes fiber extrusion

Spinning basket reactor, 21 352, 353 Spinning-cup atomizers, 23 659 Spinning-cup sulfur burner, 23 660 Spinning machines, 19 749 Spinning processes, hollow-fiber, 16 7-12 Spinning pump, for olefin fiber extrusion, 11 231... 

M.L. Shofner, F.J. Rodriguez-Macfas, R. Vaidyanathan, and E.V. Barrera, Single wall nanotube and vapor grown carbon fiber reinforced polymers processed by extrusion freeform fabrication, Composites Part A, 34(12) 1207-1217, December 2003. 

Polypropylene can be fabricated by almost any process used for plastics (see Plastics PROCESSING). The extrusion of pipe and injection molding of fittings present no unusual problem. However, there is no way to bond the fittings to the pipe except by remelting the polymer, which is impractical on most construction sites. The resin can be reinforced by glass fibers, mineral fillers, or other types of fillers and can be pigmented readily. 

These demonstrations of melt processability for PAn provide an avenue for the convenient preparation of films and fibers of CEPs. The absence of solvent makes the melt-processing route more attractive and environment-friendly than alternative solvent processing. In addition, the melt-processable CEPs are then easily incorporated into polymer blends using the well-developed processing techniques (extrusion and so on) widely used for thermoplastic polymers. 

Gluten Plastic Gluten can be processed by extrusion to make fibers, pipes, and films. Alternatively it can be made into granules that can be processed in other ways, like injection molding or blow-mold-... 

Polyamides Thermoplastic aromatic or aliphatic polymer of dicarboxylic acids and diamines, of amino acids, or of lactams. Has good mechanical properties, chemical resistance, and antifriction properties. Processed by extrusion and molding. Used in fibers and molded parts. Also called PA. 

Uses Emollient for cosmetics, creams/lotions, pharmaceuticals thickener, vise, control agent, pigment dispersant for cosmetic creams/lotions, bath preps. dye carrier, lubricant for textile/industrial filament yarns, fiber finishes textile surfactant lubricant for plastics processing and extrusion magnetic tapes Manuf./Distrib. DelCon St. Lawrence Trade Names Lexolube B-109... 

It may be conveniently processed via extrusion, injection and blow molding, as well as stractural foaming. It is customary to reinforce with up to 30% glass fibers, and it is utilized in machinery and pumps, dishes (that may be directly heated on the fire), and various elements in transportation. Novel developments have led to a higher heat deflection temperature of 150 C, and enhanced impact strength. 

Presence of small amounts of isotropic material within the mesophase can have important practical implications in processing of polydisperse samples. We have observed, for example, that upon fiber extrusion from the nematic melt, optimum mechanical strength is not developed until extrusion temperatures are below the l/N transition temperature of the shortest components. Similarly, measurement of order parameter shows that presence of a minor isotropic component deters optimum overall alignment until a temperature some 25-30 C below the transition to a "homogeneous nematic phase, as observed by microscopy. ... 

Ihe "dry process" is based on the biopolymers thermoplastic properties when plasticized and heated above their melting point to cause them to flow. Some good examples of dry processes are extrusion and heat pressing [2,3]. The dry process is mainly used to form composites. Plant fibers, for example, as reinforcement for preparing the polymer matrix composites needed for extruder equipment. 

Non-woven fabric n. Fabrics can be produced directly from molten or dissolved fiber-forming substances by several continuous processes flash extrusion The process in which a fiberforming substance in a volatile solvent is extruded from a high-temperature, high-pressure environment into lower temperature and pressure conditions, causing the solvent to rapidly evaporate, leaving a lacy, net-like fabric. 

Pigment-inherent properties, such as heat resistance and chemical inertness to other additives present in PP, have to be considered to achieve color consistency during the whole conversion process. High quality of pigment dispersion is required for film and especially for continuous filament fiber extrusion, to avoid breakage of laments and to ensure process stability. 

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