Methods for forming vascular components include providing a composite sacrificial body comprising a first sacrificial material having an outer surface and a second sacrificial material applied to at least a portion of the outer surface, molding a solid substrate around the composite sacrificial body, removing the first sacrificial material by deflagration such that at least a portion of the second sacrificial material remains in the same orientation relative to the substrate as originally molded, and subsequently removing the second sacrificial material by a non-deflagration process to form a vascular component. The second sacrificial material can include a phase change material, a syntactic foam including hollow beads bound together with a polymeric binder or a sintered aggregation of hollow beads, a polymeric foam, a water-soluble resin, or an aerogel. The non-deflagration process can include mechanical pulverization, contacting the second sacrificial material with a solvent or chemical etching agent.

Forming systems and methods for drape forming a composite charge are disclosed herein. The forming systems include a forming die having a forming surface and a collapsible support having a support surface. The collapsible support is configured to transition from an extended conformation to a collapsed conformation and is configured such that a gap width of a gap between the support surface and the forming surface decreases during the transition. The methods include positioning a composite charge, transitioning the collapsible support from an extended conformation to a collapsed conformation, decreasing the gap width of the gap as the collapsible support transitions from the extended conformation to the collapsed conformation, and deforming the composite charge from an initial conformation to a final conformation.

A seal configuration, mold and manufacturing process that inhibits undesirable elastomer migration onto critical radially inwardly facing portions of a plastic-lined dynamic sealing lip, for improved high-pressure seal operation.

A seal configuration, mold and manufacturing process that inhibits undesirable elastomer migration onto critical radially inwardly facing portions of a plastic-lined dynamic sealing lip, for improved high-pressure seal operation.

The invention discloses an inflation-free hollow tire modeling die which comprises a die base, die cores and a core holder. The front face, facing a discharge outlet of an extrusion forming machine, of the die base is provided with a concaved feeding cavity, and the bottom of the feeding cavity is provided with a modeling cavity running through the back face of the die base. The core holder is an arc support or a triangular support, supporting feet of the support are fixed to the outer edge portion of the feeding cavity, the top of the support is located in front of the modeling cavity, each die core is in suspended mode and comprises a columnar main body, each die core corresponds to an inner cavity of a tire, the length direction of each die core is perpendicular to the front face and the back face of the die holder, the head ends of the die cores are fixedly connected with the core holder, the tail ends of the die cores are extended backwards and positioned in the modeling cavity, the cross section shapes and relative positions in the modeling cavity of the die cores are matched with the internal structure and tire shapes of tires, and the cross section shape of the modeling cavity is matched with the contours of the tires. By means of the structure, the die mechanical strength is ensured, meanwhile, retardation and eddy currents are avoided for rubber materials in the whole extrusion process, and the quality of tire billets and tire products is ensured.

The invention relates to the field of casting, and more particularly to a method of producing a ceramic core (1) for casting, said core (1) presenting a shape that includes at least a first lateral protuberance (11), and the method comprising at least a step of injecting a paste comprising a ceramic granulate and a polymer binder into a mold cavity In order to form a part (10) presenting a shape corresponding to the shape of the core (1) together with at least one additional lateral protuberance (15) adjacent to said first lateral protuberance (11), a step of firing the part (10), and a step of eliminating said additional lateral protuberance (15) from the part (10) after said firing step.

The invention relates to the field of casting, and more particularly to a method of producing a ceramic core (1) for casting, said core (1) presenting a shape that includes at least a first lateral protuberance (11), and the method comprising at least a step of injecting a paste comprising a ceramic granulate and a polymer binder into a mold cavity In order to form a part (10) presenting a shape corresponding to the shape of the core (1) together with at least one additional lateral protuberance (15) adjacent to said first lateral protuberance (11), a step of firing the part (10), and a step of eliminating said additional lateral protuberance (15) from the part (10) after said firing step.

To prevent wear powder from adhering to a film, an expander roller (21) is used that extends in the width direction of a porous film (F) and that is configured to apply a tension to the porous film (F) in the width direction, and foreign matter adhering to the expander roller (21) is removed from a portion of the outer peripheral surface of the expander roller (21) at which portion the expander roller (21) is in no contact with the porous film (F).

To prevent wear powder from adhering to a film, an expander roller (21) is used that extends in the width direction of a porous film (F) and that is configured to apply a tension to the porous film (F) in the width direction, and foreign matter adhering to the expander roller (21) is removed from a portion of the outer peripheral surface of the expander roller (21) at which portion the expander roller (21) is in no contact with the porous film (F).

There is provided a member of a mold stack (100, 800), the member comprising: a member body (102, 802) defining a member molding surface for defining, in use, a portion of a molding cavity for molding a molded article, a member cooling circuit (120, 820) having a plurality of member cooling channels (128, 829), the plurality of member cooling channels (128, 829) being coupled in parallel to a source of cooling fluid, the member cooling circuit (120, 820) being fully encapsulated within the member body (102, 802).