Disclosed is a locking device for a molding unit for containers of thermoplastic material. The device includes a lock with at least one locking pin, the at least one locking pin being made of polyetheretherketone (PEEK) and advantageously has at least one metal insert.

Evacuable, stable mold having a design obtained by thermal deformation at temperatures 240 C. and corresponding to a fiber composite plastic component to be produced, consisting of an at least two-layered thermoplastic, vacuum-tight plastic film from a surface layer which is made of at least one thermoplastic polyamide or copolyimide, which has optionally functional groups, and a separating layer which form the inner side and is made of at least one thermoplastic fluorinated copolymer which has functional groups.

A film tube installed and sealed in a hollow composite part acts as an internal vacuum bag that eliminates the need for an internal mandrel to react compaction forces applied by autoclave pressure during curing of the part.

A film tube installed and sealed in a hollow composite part acts as an internal vacuum bag that eliminates the need for an internal mandrel to react compaction forces applied by autoclave pressure during curing of the part.

The present invention relates to an induction sealing device for heat sealing of packaging material. The sealing device comprises a conductor partly encapsulated in a supporting body for cooperation with the packaging material during sealing. The coil conductor has a reduced cross sectional area at at least one position along the coil conductor so as to concentrate the magnetic flux induced by the coil conductor at the at least one position. The invention also relates to a method of heat sealing a packaging material using the induction sealing device.

A thermoplastic polyester resin composition is obtained by mixing, with respect to 100 parts by weight of (A) a thermoplastic polyester resin, 0.1-50 parts by weight of (B) at least one type of phosphinate selected from phosphinates and diphosphinates, more than 10 parts by weight but not more than 40 parts by weight of (C) a phosphazene compound, 0.1-50 parts by weight of (D) a nitrogen-based flame retardant, 2.5-6.5 parts by weight of (E) an epoxy compound, and 0.1-20 parts by weight of at least one resin selected from among (F-1) olefin resins and (F-2) polyamide resins, wherein the total of parts by weight of components (B), (C), and (D) is 60-80 parts by weight.

High-frequency welding method for welding an accessory to a substrate by high-frequency welding machinery which includes a female mold, having a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, having a relief formed by a profile having substantially the same shape and dimensions as the accessory. The method includes: mounting the female mold on a movable upper plate of the machinery and the male mold on a fixed lower plate of the machinery, or vice versa, such that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief. The method further includes: positioning the accessory on the relief or in the cavity; positioning the substrate above the accessory; moving the upper plate towards the lower plate; supplying high-frequency welding energy to the upper plate and/or to the lower plate.

High-frequency welding method for welding an accessory to a substrate by high-frequency welding machinery which includes a female mold, having a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, having a relief formed by a profile having substantially the same shape and dimensions as the accessory. The method includes: mounting the female mold on a movable upper plate of the machinery and the male mold on a fixed lower plate of the machinery, or vice versa, such that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief. The method further includes: positioning the accessory on the relief or in the cavity; positioning the substrate above the accessory; moving the upper plate towards the lower plate; supplying high-frequency welding energy to the upper plate and/or to the lower plate.

A polyamide molding composition is provided, including the following components in parts by weight: a PAXC/YC resin in 40 parts to 75 parts, a white pigment in 30 parts to 60 parts, and a dispersing agent in parts by weight that are 1.5% to 5% of the parts by weight of the white pigment; based on a molar percentage of the PAXC/YC, the PAXC/YC resin includes 60 mol % to 100 mol % of an XC unit and 0 mol % to 40 mol % of a YC unit; the XC unit consists of a 1,4-cyclohexanedicarboxylic acid unit and a diamine unit; the YC unit consists of a 1,4-cyclohexanedicarboxylic acid unit and a diamine unit.

3D printing device and 3D printing method. The device comprising: a build platform having an external surface; means for providing a polymerizable fluid resin on said surface; a radiation source, to emit a radiation beam to said surface; beam positioning means, to variably position an impinging point of said beam; and means for controlling said source and said positioning means to manufacture a 3D tubular object according to a model;
wherein the build platform comprises a stem forming a tubular shaped surface around a longitudinal axis, so that said external surface of said build platform is comprised in said tubular shaped surface, and said positioning means is configured to variably position said impinging point of said beam on different points of said fluid resin provided on said tubular shaped surface.