An injection molded article is obtained by injection molding a molten resin into a mold. The injection molded article includes: a base as a thin plate-shaped member that is connected to a gate of the mold; and a plurality of protrusions each integrally molded on the base and having a thickness greater than a plate thickness of the base. The plurality of protrusions have holes each extending through the base, and the holes in the respective protrusions are connected through another component to form a flow channel. A processed region processed to have a surface roughness greater than a surface roughness of a mirror surface region including a region between the holes on the base is formed in a projected region where a region having a predetermined thickness value is projected on the base.

A method for manufacturing an elongated element (200) is provided. The method comprises arranging a molding cavity (101), defined by a mold (103) and a mold insert (104), said mold insert (104) comprising a mold core (105) and a displaceable mold cavity wall (106), said displaceable mold cavity wall (106) being arranged between the mold (103) and the mold core (105), such that the molding cavity has a start volume in a start position of the displaceable mold cavity wall (106). Then a liquid material is injected into a proximal end (102) of the molding cavity (101), where after the displaceable mold cavity wall (106) is displaced in relation to and along with the mold (103) and the mold core (105), distally during said injection, to increase the molding cavity volume from the start volume into an end volume at an end position of the displaceable mold cavity wall (106), wherein the molding cavity (101) in said end position of the displaceable mold cavity wall (106) corresponds to the elongated element (200). The liquid material is solidified, such that the elongated element (200) is formed, and the elongated element (200) and mold insert (104) is removed from said mold (103), where after the elongated element (200) is removed from said mold insert (104). An elongated element and a mold assembly for the manufacture thereof are also provided.

Thermoplastic polyurethane (TPU) compositions, methods for producing TPU compositions, methods of using TPU compositions, and apparatuses produced therefrom are disclosed. Disclosed TPU compositions include a thermoplastic polyurethane polymer, a heat stabilizer, a flow agent, and a filler material. The filler may be a glass fiber. Disclosed TPU compositions have improved thermal stability and improved flow properties suitable for injection molding of articles of manufacture having a large plurality of fine openings or pores. Articles produced from the composition have superior thermal stability, abrasion resistance, and chemical resistance. Example articles include screening members for vibratory screening machines. Further embodiments include compositions without heat stabilizers, flow agents, and filler materials, and compositions in which two TPU materials having different harnesses are combined to generate a material with a pre-determined hardness. Injection molded screen elements having openings from 25 to 150 microns and open screening area from 10% to 35% are disclosed.

A connector is disclosed that includes comprising a body having a tubing portion, a luer portion axially opposite the tubing portion and connected thereto, and an inner circumferential surface defining an internal bore of the connector. The inner circumferential surface extends axially between the tubing portion and the luer portion, and the internal bore being is in fluid communication with the tubing portion and the luer portion. The inner circumferential surface includes a plurality of splines extending axially along a length of the inner circumferential surface in the tubing portion of the connector. The inner circumferential surface is configured to engage an external surface of a tubing in a coupled configuration. In the coupled configuration edges of the splines grip and engage the external surface of the tubing to retain the tubing in the body.

A method and device for producing an optimized neck contour on preforms below the neck which is optimal for subsequent stretch blow molding. The geometry has a significantly thinner wall thickness than the neck itself. The preform can only be produced in the injection molding tool, when axial channels are used on the point or the vanes produce the thin points on the preform during injection molding. The thin-walled geometry on the preform can be produced outside of the mold during post-cooling by embossing. The preform is then removed in a cooled receiving sleeve and is cooled in the body by intensive contact cooling while no cooling contact is made with the preform neck due to the initial position of the embossing element. Due to the reheating of the neck they can be mechanically deformed into a new geometry advantageous for blow molding and thus wall thickness can be influenced.

A resin injection molding method uses a mold having a cavity and a hole-forming columnar body. The hole-forming columnar body is movable in an axial direction while extending through the cavity, and includes a first diameter portion having a first diameter, a second diameter portion having a diameter greater than the first diameter, and a tapered portion having a diameter gradually increasing from the first diameter portion toward the second diameter portion. The method includes moving the hole-forming columnar body in the axial direction such that at least one of the first diameter portion or the tapered portion is positioned in the cavity, injecting the molten resin to fill the cavity, maintaining an inside of the cavity under pressure, moving the hole-forming columnar body in the axial direction such that the second diameter portion is positioned in the cavity, and solidifying the injected filling molten resin.

Provided is a method for manufacturing an optical receptacle with which the occurrence of bending of a guide pin hole can be suppressed. The method for manufacturing an optical receptacle of the present invention includes an injection step of injecting a resin through a resin injection port of a mold into a cavity of the mold, and a solidification step of solidifying the resin in the cavity of the mold. The cavity of the mold has a protruding portion for forming a recessed portion in a main body of an optical receptacle, a pair of pins for forming a pair of guide pin holes in the main body of the optical receptacle, and a pair of pin-retaining portions. In the injection step, the mold during the injection of the resin is in a state in which the pair of pins are respectively disposed on two end sides of the protruding portion, the resin injection port is disposed so that the resin flows from one end side of the pair of pins toward opposing faces of the pins that oppose each other, one of the pin-retaining portions is disposed in contact with a side of a corresponding one of the pins that is opposite to the opposing face thereof, and the other of the pin-retaining portions is disposed in contact with a side of the other of the pins that is opposite to the opposing face thereof.

Methods and systems for co-injection molding multilayer articles having one or more molded apertures disposed between a gate region and a peripheral region of the article are disclosed. The articles include an interior layer disposed between an inner layer and an outer layer. An article has interior layer coverage over at least 98% of a perimeter of a cross-section of the article downstream of the one or more molded apertures. A method includes modifying fluid flowing past an aperture-forming region of a mold cavity to compensate for the drag of the aperture-forming region on the velocity of the fluid flowing proximal to the aperture-forming region.

An anti-friction bearing cage for an anti-friction bearing includes a cage ring with an inner radius, a first cage bar, a second cage bar, and a receiving pocket delimited by the cage ring and the cage bars. The first cage bar projects from the cage ring and includes a first side flank with a first part surface extending in a demolding direction for a common slide and a second part surface arranged adjoining the inner radius. The second cage bar projects from the cage ring and is successive to the first cage bar in the circumferential direction. The second cage bar has a second side flank, pointing towards the first side flank in a tangential direction, with a third part surface extending in the demolding direction and parallel to the first part surface in a part region, and a fourth part surface arranged at a spacing from the inner radius.

An injection molding device for fabricating a part, the device including an injection mold, the mold being formed of a support and a countermold that are distinct and that define between them a mold cavity presenting a first shape; and at least one injection device for injecting a fluid material into the mold cavity; the device including deformation elements configured to modify the shape of the mold cavity into a second shape distinct from the first shape.