A process for molding one or more bottle preforms, wherein molten plastic is injected into at least one molding cavity; and wherein air is drawn from the at least one molding cavity, through at least one channel for the air to pass from the at least one molding cavity towards the outside of the molding device, by means of suction means; and apparatus and device for performing such a process.

The disclosure includes a laminate tool and a process for producing laminate tooling with functional features between adjacent or non-adjacent laminate segments to provide mechanical leverage to demold a part, space for moving tool segments that allow features to be molded against the line of draw (eliminate die-locked conditions), and passageway for gas to travel. The disclosure further includes a laminate tool with channels in the laminate sheets that communicate at one end to a source of pressurized air and at its opposite end to the mold cavity. The channel permits forced air into the mold cavity to demold the part.

The disclosure includes a laminate tool and a process for producing laminate tooling with functional features between adjacent or non-adjacent laminate segments to provide mechanical leverage to demold a part, space for moving tool segments that allow features to be molded against the line of draw (eliminate die-locked conditions), and passageway for gas to travel. The disclosure further includes a laminate tool with channels in the laminate sheets that communicate at one end to a source of pressurized air and at its opposite end to the mold cavity. The channel permits forced air into the mold cavity to demold the part.

A method for receiving and ejecting molded articles includes: (a) drawing air from a cooling tube cavity into an air channel through a plate bore to draw at least a portion of a molded article into the cavity; (b) moving a valve within the plate bore from a first position for conducting air from the cavity to the air channel to a second position for reducing air flow through the plate bore relative to the first position; and (c) when the valve is in the second position, urging pressurized air from the air channel to the cavity through the plate bore to assist ejection of the molded article from the cavity.

A method for receiving and ejecting molded articles includes: (a) drawing air from a cooling tube cavity into an air channel through a plate bore to draw at least a portion of a molded article into the cavity; (b) moving a valve within the plate bore from a first position for conducting air from the cavity to the air channel to a second position for reducing air flow through the plate bore relative to the first position; and (c) when the valve is in the second position, urging pressurized air from the air channel to the cavity through the plate bore to assist ejection of the molded article from the cavity.

A casting mold for producing a casting having a front side and a rear side from a curable casting compound, including at least a first mold part shaping the front side and a second mold part shaping the rear side, the mold parts together delimiting a casting cavity. A slide device, provided on one of the mold parts, includes a slide portion that can be driven into the casting cavity and on which a detachable insert part is or can be arranged. The insert part is able to be moved abutting against the opposite mold part and is able to be embedded into the curing casting compound, and is detached from the slide portion when the latter is moved back.

A core lifter having lifter bar with an elongate blade which carries a coupling head received in an elongate lifter bar coupling receiver formed in the base configured to permit pivotable, swiveling and/or translational misalignment or tolerance compensation during core lifter assembly, installation, and operation in a plastic formable material molding apparatus, including during mold cycling advantageously preventing core lifter binding and extending core lifter life. A preferred lifter has a lifter bar formed of a blade to which a lifter bar coupling ball is attached that is received in an elongate longitudinally extending channel having a transverse cross section complementary to the ball defining a bearing race in which the ball is received enabling slidable pivoting, swiveling and slidable movement of the ball and blade relative thereto including while the ball and blade are slidably moving along the race in a longitudinal or lengthwise direction relative to the base.

A core lifter having lifter bar with an elongate blade which carries a coupling head received in an elongate lifter bar coupling receiver formed in the base configured to permit pivotable, swiveling and/or translational misalignment or tolerance compensation during core lifter assembly, installation, and operation in a plastic formable material molding apparatus, including during mold cycling advantageously preventing core lifter binding and extending core lifter life. A preferred lifter has a lifter bar formed of a blade to which a lifter bar coupling ball is attached that is received in an elongate longitudinally extending channel having a transverse cross section complementary to the ball defining a bearing race in which the ball is received enabling slidable pivoting, swiveling and slidable movement of the ball and blade relative thereto including while the ball and blade are slidably moving along the race in a longitudinal or lengthwise direction relative to the base.

A thermoplastics injection molding process coats a field joint of a pipeline by positioning a mold tool around the field joint to define a mold cavity. Thermoplastics material injected into the mold cavity forms a field joint coating that will set in the mold cavity. As the thermoplastics material shrinks in the mold cavity while the field joint coating sets, compacting pressure is applied radially inwardly within the mold cavity against a radially outer side of the field joint coating. A compacting fluid introduced into the mold cavity between the mold tool and the field joint coating may be used to apply pressure against the field joint coating. This accelerates and controls cooling of the field joint coating while maximizing quality.

A thermoplastics injection molding process coats a field joint of a pipeline by positioning a mold tool around the field joint to define a mold cavity. Thermoplastics material injected into the mold cavity forms a field joint coating that will set in the mold cavity. As the thermoplastics material shrinks in the mold cavity while the field joint coating sets, compacting pressure is applied radially inwardly within the mold cavity against a radially outer side of the field joint coating. A compacting fluid introduced into the mold cavity between the mold tool and the field joint coating may be used to apply pressure against the field joint coating. This accelerates and controls cooling of the field joint coating while maximizing quality.