A cutting chamber housing for an underwater pelletizer having an inlet for cooling fluid and an outlet for cooling fluid with pellets. The cutting chamber housing encloses a cutting device having a rotary drive and a cutting head with rotating cutting knives. An extrusion head having a perforated plate projects into the cutting chamber housing. The cutting chamber housing has a stationary upper housing half and a movable lower housing half along a separation plane arranged at an oblique angle so that the cutting chamber housing can be opened at least downwards along the separation plane. Features such as slide rails, swivel joints, or rotary joints can be added to enable easy opening of the cutting chamber housing.

A polyamide resin composition for an extrusion-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260° C. and a take-up speed at strand break of 30 m/min or more when measured at 260° C.

The invention relates to compositions, molding materials producible from the compositions, and to articles of manufacture in turn based on the molding materials, wherein the compositions comprise polyalkylene terephthalate or polyalkylene furanoate, at least one filler or reinforcer, and at least one secondary alkanesulfonate having two alkyl radicals.

The invention relates to polymer compositions, moulding compositions produced therefrom, and to products which are in turn based on the moulding compositions, where the polymer compositions include polybutylene terephthalate and/or polyalkylene furanoate, polycarbonate, and at least one secondary alkanesulphonate.

Embodiments of an invention disclosed herein relate to devices, processes, and systems for processing polymers.

A blade (6) for underwater granulation of an extruded polymer, this blade comprising a plate (60) bounded by a contour including a cutting edge contour (61) having a first end (62) and a second end (63), and an outer contour (64) linking the first end (62) and the second end (63) of the cutting edge contour (61),

characterized in that the outer contour (64) comprises at least a first bearing portion (65) and a second bearing portion (66), the first bearing portion (65) and the second bearing portion (66) diverging while extending away from the cutting edge contour (61) and being configured to be received in a dovetail housing (13).

A breathing circuit component includes an inlet, an outlet and an enclosing wall. The enclosing wall defines a gases passageway between the inlet and the outlet. At least a region of the enclosing wall is formed from a breathable material that allows the passage of water vapor without allowing the passage of liquid water or respiratory gases. The breathing circuit component may be the expiratory limb of a breathing circuit.

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.

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 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.