Process for the production of solid particles comprising a material with melting point from −20 to 300° C. at atmospheric pressure, characterized in that a mixture comprising: a1) the material in molten form and a2) the material in solid form is mixed by means of an extruder to give a paste, this is forced through a pelletizing die to give strands, and the strands are comminuted.

The invention relates to a PET regranulate which, after modification of a granulated PET recyclate, has an intrinsic viscosity of at least 0.95 dl/g measured according to ASTM D 4603, preferably greater than 1.0 dl/g and particularly preferably between 1.1 dl/g and 1.7 dl/g and is suitable for the production of extrusion blow-molded containers.

The invention relates to a PET regranulate which, after modification of a granulated PET recyclate, has an intrinsic viscosity of at least 0.95 dl/g measured according to ASTM D 4603, preferably greater than 1.0 dl/g and particularly preferably between 1.1 dl/g and 1.7 dl/g and is suitable for the production of extrusion blow-molded containers.

A method and apparatus for the pelletization of plastics and/or polymers, in which a melt coming from a melt generator is supplied via a diverter valve having different operating positions to a plurality of pelletizing heads through which the melt is pelletized. The plurality of pelletizing heads have different throughput capacities and are used sequentially for the start-up of the pelletizing process, with the melt first being supplied to a first pelletizing head having a smaller throughput capacity and then the melt volume flow being increased and the diverter valve being switched over such that the melt is diverted by the diverter valve to a second pelletizing head having a larger throughput capacity.

A method and apparatus for the pelletization of plastics and/or polymers, in which a melt coming from a melt generator is supplied via a diverter valve having different operating positions to a plurality of pelletizing heads through which the melt is pelletized. The plurality of pelletizing heads have different throughput capacities and are used sequentially for the start-up of the pelletizing process, with the melt first being supplied to a first pelletizing head having a smaller throughput capacity and then the melt volume flow being increased and the diverter valve being switched over such that the melt is diverted by the diverter valve to a second pelletizing head having a larger throughput capacity.

Provided are a polybutylene terephthalate resin composition which is excellent in mold releasability and which can suppress deterioration in molding stability and aggregation of the polybutylene terephthalate resin composition due to blooming of a mold release agent; and a pellet thereof. The polybutylene terephthalate resin composition contains 0.01 to 5.0 parts by mass of (B) a saturated fatty acid ester of a polyglycerol represented by formula (I) described below with respect to 100 parts by mass of (A) a polybutylene terephthalate resin. In formula (I), R.sup.1s each may be the same or different and are C.sub.19-30 saturated aliphatic acyl groups, and n is an integer from 1 to 10. ##STR00001##

A melt processing plant is provided that includes a melt charger for charging a processing head, in particular a pelletizing head, with melt, in which a diverter valve for discharging the melt during a starting and/or retooling phase is associated to the melt charger upstream of the processing head. A splitter divides the discharged melt into melt portions with the melt channels of the splitter head having at least one step-like cross-sectional enlargement of their inflow portion, a cross-sectional shape different from the outlet cross-section of the discharge channel, and an open orifice region out of the splitter.

The present invention relates to a method for manufacturing thermoplastic polyurethane pellets by means of reactive extrusion of: a long macrodiol with a molecular weight of 500 to 3000 g/mol; a diisocyanate; at least one chain extender comprising a dianhydrohexitol; and a polymerization catalyst. The invention also relates to the resulting thermoplastic polyurethane pellets.

The present invention relates to a method for manufacturing thermoplastic polyurethane pellets by means of reactive extrusion of: a long macrodiol with a molecular weight of 500 to 3000 g/mol; a diisocyanate; at least one chain extender comprising a dianhydrohexitol; and a polymerization catalyst. The invention also relates to the resulting thermoplastic polyurethane pellets.

A hybrid reinforcement material (18) is disclosed that includes a plurality of reinforcement fibers (12) and a plurality of carbon fibers (14) comingled with the reinforcement fibers (12). The reinforcement fibers (12) are selected from natural fibers, organic fibers, and inorganic fibers and form a single hybrid assembled roving with the carbon fibers (14). The carbon fibers (14) are post-coated with a compatibilizer. The hybrid assembled roving (18) may be formed using a hybrid of glass and carbon fibers.