A method and molding system for hydraulic blow molding of a container from a preform. The method precharges the molding medium within a fill head unit to a precharge pressure. During the injecting of the molding medium into the preform, the method further increases the pressure of the molding medium to a pressure greater than the precharge pressure.

An injection head for the fabrication of a container from a preform. An injection head interfaces with a mouth of the preform to establish fluid communication between a liquid supply and the mouth. The injection head includes an injection valve disposed within an outer shell of the injection head and configured to selectively permit fluid communication through the injection head upon displacement between an opened and a closed position. The injection head also includes an injection head cavity disposed between the injection valve and the outer shell and connected to the liquid supply. A liquid supply control mechanism and a control mechanism of the injection valve's opening allow fluid communication through the injection head. The control mechanism of the injection valve's opening is activated by the liquid under pressure in the injection head cavity when liquid supply is opened.

Systems and methods for making a reduced material container are provided that hold a preform adjacent to an open end of the preform, stretch the preform, close a mold about the stretched preform to form a truncated preform, and introduce a pressurized fluid into the truncated preform to expand the truncated preform and form the reduced material container. A stretch rod can be inserted into the preform to mechanically stretching the preform. The mold accepts the preform at a first end thereof, has an open state and a closed state, and the closed state forms a cavity defining an internal surface having a second end located remotely from the first end. A first length is defined by a distance between the first end and the second end, the stretch rod mechanically stretching the preform to a second length, the second length being greater than the first length.

A medical stent mold includes a tube having an interior passage sized and dimensioned to receive a stent assembly disposed at least partially about a central portion of a stent balloon. The medical stent mold may also include a housing forming a chamber through which the tube extends. The tube may include a thermally conductive material and may have a body portion that extends within the chamber and an end portion that is proximate the body portion and that extends away from the housing. Forced convection may be used to quickly heat and cool the tube. Methods of increasing retention of an expandable stent assembly on a stent balloon and of detecting a leak in a stent balloon are also included.

Disclosed is a processing unit for an electromagnetic processing of plastic parisons and including a series of processing modules, each including a hollow housing, a light emitting assembly and a dehydration circuit for preventing each hollow housing from moisture via a dehydrated fluid. The dehydration circuit extends outside the main body, where the circuit can be in fluid communication with a source of pressurized fluid, on which are disposed a fluid dehydration unit and fluid circulation unit for forcing the dehydrated fluid to feed the respective hollow housings.

A method and system for hydraulic blow molding a container from a preform 24. A molding medium is injected into the preform from a nozzle 12 during a first molding stage. In the first molding stage, the molding medium is injected so as to be specifically directed at a closed end of the preform 24. During the first molding stage, the preform is axially stretched in response to the force exerted on the preform by the molding medium. The molding medium is also injected into the preform during a second molding stage, where the molding medium is injected at a flow rate greater than a flow rate during the first molding stage. During the second molding stage, the preform is radially expanded into the shape of the container.

A pressure is accumulated in advance in a cylinder (35), which is used for conversion to air for the outside of a mouth, with an opening-closing valve (V3) of the cylinder (35) being closed, and when a pressurized liquid (L) is supplied into a preform (PF) through a blow nozzle (13) by actuating a plunger pump (31) and by opening a sealing body (15), the opening-closing valve (V3) of the cylinder (35) is opened to thereby apply the pressure accumulated in the cylinder (35) to the liquid (L) supplied into the preform (PF).

Disclosed is an apparatus for forming a plastic fuel tank for a vehicle, wherein when a parison is formed into semi-finished products having a shape of the fuel tank, the semi-finished products are formed by press forming using first and second molds and an intermediate mold. The semi-finished products are formed without using a blow molding process.

A liquid blow molding apparatus for liquid blow molding a resin preform into a container having a prescribed shape. The apparatus includes a blow molding mold in which the preform is disposed; a blow nozzle that engages in an opening of the preform; a pressurized liquid supply that supplies a pressurized liquid to a supply path that is connected to the blow nozzle; and a seal member that is provided inside the supply path and opens and closes the supply path with respect to the blow nozzle. The pressurized liquid supply is configured to start supplying the pressurized liquid to the supply path after the seal member has begun to open.

The invention relates to a method for manufacturing a container (2), by drawing and blowing in a mould (8), from a blank (3) made of plastic material, which includes the following operations: inserting the blank (3) in the mould (8); controlling the opening of a pre-blowing solenoid valve (17) at a predetermined pre-blowing rate (D.sub.P); measuring the current pressure (P) inside the blank (3); detecting an actual time (t.sub.A) for starting the pre-blowing step; calculating a time (t.sub.F) for ending the pre-blowing step such that: t.sub.F=t.sub.A+t, wherein: t is a predetermined time for opening the pre-blowing solenoid valve and is a predetermined constant; deducing therefrom an actual pressure (P.sub.F) at the end of the pre-blowing step; comparing said pressure to a theoretical pressure (P.sub.th); and if said pressures are found to be non-identical, ordering a modification of the pre-blowing rate (D.sub.P).