An inner mandrel for forming a variable taper component includes a plurality of interlocking pieces and a brace. Each interlocking piece defines opposed tapered edge faces, a first surface, and a tapered second surface opposite the first surface. One of the edge faces defines a locking feature and another of the edge faces defines a receiving feature engaging the locking feature of an adjacent interlocking piece. The first surface defines a variable taper and a plurality of recesses. The brace secures the plurality of interlocking pieces to each other in a concentric arrangement about a central axis. A maximum width of each of the interlocking pieces is smaller than a minimum width of an end portion of the variable taper component. A central portion of the variable taper component is wider than the end portions.

The present invention relates to a thermoplastic resin substrate for a curved mirror and a method for preparing the same, and a curved mirror and a head-up display comprising the thermoplastic resin substrate. The preparation method comprises the following steps: A) heating up a mold of an injection molding machine to a temperature in a range of 130-190° C. and closing the mold, B) injecting a molten thermoplastic resin into the cavity of the mold cavity, C) applying a pressure of 300-700 bar to the cavity for a period of 5 or more seconds, D) stopping applying pressure and cooling the mold to a temperature in a range of 60-100° C. within 10-50 seconds, and E) opening the mold and taking out the molded thermoplastic resin substrate, wherein a gap of 0.3-1 mm is left between the parting surfaces of the cavity of the mold prior to applying the pressure to the cavity. The thermoplastic resin substrate according to the present invention features a large size, high dimensional stability, and low surface roughness. It can be used for future augmented reality head-up displays to realize large-area, long-distance projection and high-precision imaging, thereby satisfying the requirements for driving safety and comfort of future automobiles.

A method for producing a thermoformed product on a single machine with several stations and with different tools includes the following steps: (a) melting and homogenizing plastic granules and providing the plastic melt at a preform station; (b) producing a preform at the preform station in a preform cavity; (c) transferring the preform by a transfer carrier to a thermoforming station at the same machine, the thermoforming station having a thermoforming tool having a thermoforming cavity; (d) preferably heating the preform during the transfer; (e) thermoforming of the thermoformed product in the thermoforming cavity. Advantageously, the final thermoformed product is produced directly from the plastic granules using only a single machine, and in particular without any waste, when the preform is dimensioned in such a way that it does not present any excess with respect to the final shape of the product to be produced.

A footwear injection mold includes a primary injection mold having a first coupling element of a first coupling assembly; and a secondary injection mold provides at least part of an injection chamber for molding a footwear part. The injection chamber has a proximal surface defining at least part of a distal surface of the footwear part and a second coupling element of the first coupling assembly. The first coupling assembly is configured to fix the secondary injection mold relative to the first injection mold.

An injection mold of a plastic preform includes first, second and third parts, the third part having a molding cavity defining an axis and adapted to be fixed to a first surface of a mold frame; the second part between the first and third parts slides along the axis to close or open the cavity. The first part includes a rod that slides along the axis through a second surface of the frame. The second part includes: a guiding cage through which the longitudinal rod can slide; a structure; and parallel guiding rods extending to the structure; an assembly sliding inside the cage; and a punch sliding inside the structure and defining a first complementary component of the cavity;
wherein the structure defines, together with the punch, a cam system for opening or closing two half-collars which define, when closed, a second complementary component of the cavity.

A mold insert has at least one filament cavity and a stack of at least a first and second insert plates, wherein the first plate has a front face that closely abuts a front face of the second insert plate. A portion of the a filament cavity is provided in at least one of the front faces of the first and second insert plates such that the filament cavity is open at a top surface of the mold insert but does not extend to a bottom surface of the mold insert. A venting cavity is provided in the same front face of the insert plate in which the portion of the at least one filament cavity is provided. The venting cavity, which is in air-conducting connection with the blind-hole end of the filament cavity, has a depth between 1 μm and 20 μm. A method of manufacturing the mold insert includes providing first and second insert plates, forming a portion of a filament cavity into at least one of the front faces of the insert plates, forming a venting cavity into the front face with the filament cavity, and bringing the front faces of the plates into close abutment to form a filament cavity.

The present application describes a modular unit for injection-compression molding (1). The modular unit for injection-compression molding (1) is arranged between the movable platen of the injection machine (21) and the stationary platen of the injection machine (22), in particular in the half-mold bearing face resulting from the division thereof by the opening joint. This modular unit for injection-compression molding (1) allows a substantial reduction of energy spent by reduction of inertial masses involved. The present application describes a modular unit for injection-compression molding (1) to be used in the production of pieces by injection being installed on any thermoplastic molding process.

The present invention provides a method for producing a durable semispherical shoe which can be prevented from being subjected to seizure even in a dry lubrication state in which there is no lubricating oil at a start time of an operation of a swash plate compressor, can be restrained from deteriorating in its lubricating property due to generated frictional heat, and can be restrained from deteriorating in its strength at a production time and an injection molding die. A semispherical shoe (4), for a swash plate compressor, to be produced by the production method has a base material (5), consisting of a hard material, which has a hollow part along a central axis thereof and a resin layer, consisting of a resin composition, which is formed on a surface of a planar part, disposed on a periphery of the base member, which is to be subjected to sliding contact with the swash plate and on a surface of a spherical part, disposed on the periphery thereof, which is to be subjected to sliding contact with a piston. A resin-filled portion (8) where the resin composition is filled and an empty portion where the resin composition is not filled are formed in the hollow part of the base material. The resin-filled portion (8) and the resin layer are formed by injecting and filling the resin composition into a portion to be formed as the resin-filled portion (8) with the base material (5) being disposed inside a cavity (22) of the injection molding die.

A process for fabricating a molded carpet laminate includes supporting a carpet layer in a molding tool that has mold dies that define a mold cavity. The mold dies are then moved from an open position to a partially closed position. In the partially closed position, a heated polymer material is injected into the mold cavity. The heated polymer material incompletely fills the mold cavity on the working side of the carpet layer. The mold dies are then moved from the partially closed position to a closed position to spread the heated polymer material and fill the mold cavity on the working side of the carpet layer to form a molded polymer wall. The molded polymer wall adheres to the working side of the carpet layer to form a molded carpet laminate. The mold dies are then moved from the closed position and the molded carpet laminate is cooled.

An injection-compression plant for manufacturing PET performs comprises an extruder (1) to produce a melted resin, a distribution joint (3) for distributing the melted resin from the extruder (1) towards the injection-compression molds (9′, 9″, 9″), gathered in modular groups of three on supporting frames (21) arranged about the peripheral surface of the rotary carousel (2). The joint (3) allows to transfer the fluid thermoplastic resin from the stationary channel (10) of the extruder (1) to the lateral feeding conduit (27) of each molding module (9), said lateral feeding conduit being rotating with the carousel (2). The injection-compression molds (9′, 9″, 9″) have the two half-molds forming the molding cavity (41′, 41″, 41′″′) connected by means of bayonet couplings to the frame (21). The molded preforms are extracted from the carousel (2) by means of a wheel (50), which transfers them to an air cooling device (51).