Abstract:
A SYNTHETIC RESIN POLYMER SAUCH AS POLYMER, POLYESTER AND POLYOLEFIN AND POLYETHER-POLYAMIDE BLOCK COPOLYMER ARE SHAPED IN A BLENDED CONDITION TO OBTAIN A SHAPED ARTICLE, IN THE SHAPED ARTICLE, THE BLOCK COPOLYMER IS DISPERSED IN THE FORM OF SLENDER PARTICLES AS AN INDEPENDENT PHASE WHEREIN THE LONGITUDINAL AXES OF THE PARTICLES ARE ARRANGED IN PARALLEL RELATIONSHIP WITH THE DIRECTION OF THE MOLECULAR ORIENTATION OF THE SHAPE ARTICLE,F AT LEAST 80% BY WEIGHT OF THE DIPERSED PARTICLES OF THE BLOCK COPOLYMER HAVE A DIAMETER AT CROSS SECTION OF NOR MORE THAN 1.0 MICRON AND A LENGTH IN THE DIRECTION OF LINGITUDINAL AXES AT LEAST 20 TIMES THE DIAMETER AT CROSS SECTION. POLYMER BLEND SHAPED ARTICLES HAVING SUCH AN INTERNAL STRUCTURE HAVE VERY EXCELLENT PROPERTIES AS A SYNTHETIC RESIN AND ALSO EXCELLENT ANTISTATIC PROPERTIES.
Abstract:
PURPOSE:To correct spinning troubles by preventing the abnormal residence and foaming of the molten polymer with the help of a drag filter inserted between the spinneret and the filter of the spinning apparatus, thus controlling the filtering pressure and the spinning pressure at specific values respectively.
Abstract:
PURPOSE:To obtain the titled monofilament having a high knot strength, by heat-treating a drawn polymaide monofilament under no tension, drawing the heat-treated monofilament in the second stage, and heat-treating the secondarily drawn monofilament under specific conditions successively. CONSTITUTION:A polyamide monofilament, having a diameter of 0.05-2mm., and drawn at a draw ratio of 3-5 in the first drawin stage is led to a pressurized chamber fed with saturated steam at a pressure >=1kg/cm .G, and heat-treated at a draw ratio of 0.70-1.0 for 0.05-5sec under no tension. The resultant heat- treated monofilament is then drawn at a draw ratio of 1.1-2.5 while being passed through a gas at 200-800 deg.C and/or a liquid at 150-265 deg.C for the total time of 0.05-5sec in the second stage. The secondarily drawn monofilament is further heat-treated in an inert gas at 150-700 deg.C at a draw ratio of 0.85-1.0 under no tension to give the aimed monofilament having an orientation degree of amorphous molecules in the surface layer =50X10 .