A continuous cycle system for moulding single objects from plastic material, including: an extruder including a cylinder extending along a longitudinal axis (L), a screw rotating inside the cylinder about the longitudinal axis (L), the screw having a core and a thread externally coupled to the core and heaters coupled to the cylinder; a moulding machine, configured to receive as input the flow of liquid plastic material from the extruder and including a plurality of moulds, each having a first and a second half mould movable relative to each other between an open position and a closed position.

A method to control die bolts of a flat extrusion die that calibrates a zero-line calibration thickness profile, measures a variation in thickness of a film/sheet 214 by temperature change of at least one lip adjustment bolt 206a, ..., 206n by a processor 122 and records a corresponding die bolt influence area. It further calculates a voltage correction factor of the at least one lip adjustment bolt 206a, ..., 206n based on the die bolt influence area using the measured variation in thickness at the at least one lip adjustment bolt position 206ap, ..., 206np and a variation in thickness at a mean lip adjustment bolt position 206ap, ..., 206np and actuates the at least one lip adjustment bolt 206a, ..., 206n by applying the voltage correction factor and correcting the variation in thickness of the film/sheet 214 to the zero-line calibration thickness.

A polyphenylene sulfide resin composition includes (A) 100 parts by weight of an acid-treated polyphenylene sulfide resin, (B) 10 to 100 parts by weight of a glass fiber, and (C) 0.1 to 10 parts by weight of an amino group-containing alkoxysilane compound, wherein the polyphenylene sulfide resin composition has an exothermic peak temperature (Tmc) of 195° C. to 225° C., the exothermic peak temperature being observed during a crystallization caused when the polyphenylene sulfide resin composition is melted by heating to 340° C. and then cooled at a rate of 20° C./minute, using a differential scanning calorimeter.

A polyphenylene sulfide resin composition includes a polyphenylene sulfide resin (A); an aromatic vinyl compound block copolymer (B) containing at least one functional group selected from the group consisting of a carboxyl group, an acid anhydride group, a hydroxyl group, an amino group, an epoxy group and an isocyanate group; and an alkoxysilane compound (C) containing at least one functional group selected from the group consisting of an epoxy group, an amino group and an isocyanate group; wherein a phase structure of the polyphenylene sulfide resin composition is a sea-island structure in which the polyphenylene sulfide resin (A) forms a sea phase, and the aromatic vinyl compound block copolymer (B) forms an island phase dispersed in a number average dispersed particle size of 1,000 nm or less.

An extruded thermoplastic composition includes: (a) from about 20 wt % to about 75 wt % of a ceramic fiber component; (b) from about 15 wt % to about 70 wt % of a polybutylene terephthalate (PBT) component including a high molecular weight PBT and a low molecular weight PBT; (c) from about 5 wt % to about 23 wt % of a polycarbonate component; and (d) from about 1 wt % to about 10 wt % of a compatibilizer component. Methods of making the extruded thermoplastic composition are also described.

A screw machine includes an inductive heating device for processing of material to be processed. The inductive heating device is used to heat the material in a heating zone. In the heating zone, at least one housing portion is made of an electromagnetically transparent material at least partly, the material being non-magnetic and electrically non-conductive, whereas at least one treatment element shaft is made of an electrically conductive material at least partly. The inductive heating device includes at least one coil formed integrally with a component of the at least one housing portion, in particular in such a way as to form a hybrid component. During the processing of the material, the inductive heating device generates an alternating magnetic field that produces eddy current losses in the at least one treatment element shaft, the eddy current losses leading to a temperature increase of the at least one treatment element shaft.

A method of additive manufacturing of an object may include directing laser energy from a laser to a region for material deposition, extruding material using an extruder at the region of material deposition, sensing temperature within the region of the material deposition, and electronically controlling the laser energy using the temperature so as to sufficiently heat the region for material deposition prior to extruding the material to increase strength of the object. The method may include hardening or freezing extruded material through cooling in real-time.

A polyphenylene sulfide resin composition includes a polyphenylene sulfide resin (A); an aromatic vinyl compound block copolymer (B) containing at least one functional group selected from the group consisting of a carboxyl group, an acid anhydride group, a hydroxyl group, an amino group, an epoxy group and an isocyanate group; and an alkoxysilane compound (C) containing at least one functional group selected from the group consisting of an epoxy group, an amino group and an isocyanate group; wherein a phase structure of the polyphenylene sulfide resin composition is a sea-island structure in which the polyphenylene sulfide resin (A) forms a sea phase, and the aromatic vinyl compound block copolymer (B) forms an island phase dispersed in a number average dispersed particle size of 1,000 nm or less.

The present invention relates to a three-dimensional (3D) pen with a novel structure which enables filaments having various colors to be easily selected and used. According to the 3D pen according to the present invention, a user laterally rotates the adjustment lever (25) to allow the driving motor (24) to be connected to different transfer rollers (22), thereby selectively transferring and discharging a plurality of different filaments (1) forward. Therefore, the 3D pen has a very simple structure and has an advantage in that the filaments (1) having various colors can be easily selected to manufacture objects having various colors.

Methods for extrusion of polyolefins (112) that control specific energy input to the extruder (102) for gel reduction. Disclosed herein is an example method for forming plastic products (120, 208) with reduced gels, comprising: melting a polyolefin resin (112) in extruder (102) to form a melt; adjusting specific energy input in the extruder (102) to reduce gels in the melt; and forming the melt into a polyolefin product (120, 208). Disclosed herein is also an example method for forming plastic products (120, 20) with reduced gels, comprising: melting a polyolefin resin in extruder (102) to form a melt; selecting a throttle valve (104) position for gel reduction; setting the throttle valve (104) at the selected throttle valve (104) position to restrict flow of the melt out of the extruder (102); and forming the melt into a polyolefin product (120, 208).