Method and device for blow molding containers
AssigneeKhs Corpoplast GmbH
InventorsWolf Jaksztat, Michael Linke, Rolf Baumgarte, Michael Litzenberg, Klaus Vogel, Günther Godau
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Abstract
Disclosed are a method and a device for blow molding containers (2). A parison (1) is stretched by means of a stretching rod (11) within a blow mold (4) and molded into the container by applying blow pressure following thermal conditioning. The pressurized gas is introduced into the container (2) via at least two different flow paths (55, 56). Advantageously, one of the flow paths (56) ends near the orifice area (21) while a second flow path (55) ends near a container bottom (51). At least some of the pressurized gas is introduced into the container (2) through the stretching rod (11).
Claims18
Method for blow molding containers, in which a preform is stretched inside a blow mold by a stretch rod after thermal conditioning and is reshaped into the container by the action of blowing pressure, and in which pressurized gas for the blow molding is fed into the container through the stretch rod, wherein the pressurized gas is simultaneously conveyable into the container (2) by a flow path that runs through the stretch rod (11) and a flow path that runs past the stretch rod (11) on the outside, wherein the pressurized gas initially reshapes the preform into a container bubble, and subsequently reshapes the bubble into the container, wherein the pressurized gas is fed through the stretch rod along both flow paths before a final shaping of the container.
Device for blow molding containers, which has at least one blowing station with at least one blow mold and at least one stretch rod, and in which the stretch rod is connected to a supply system for supplying pressurized gas for blow molding a preform to form a container, wherein the blowing station (3) has at least two different flow paths for the pressurized gas that lead into the space enclosed by the blow mold (4), wherein one flow path runs through the stretch rod (11) and one flow path runs past the stretch rod (11) on the outside, the blowing station being configured to permit simultaneous flow of the pressurized gas through both flow paths, whereby the pressurized gas first reshapes the preform to form a container bubble and subsequently reshapes the bubble to form the container, wherein the pressurized gas is conducted through the stretch rod along both flow paths before a final shaping of the container.
Dependencies are inferred from the claim text.