Method of Manufacturing a Plastic Canister
AssigneeDr. Ing. W. Frohn GmbH & Co. KG
InventorEric Frohn
Life of this patent
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Abstract
Disclosed is a method for manufacturing a container made of plastic, including the following steps: continuously extruding a hose, positioning an opened blow mold around the hose, so that the hose is arranged between the two blow mold halves, closing a hose gripper arranged at the blow mold to clamp the hose and simultaneously keeping the hose open at its upper side to form an inlet opening, separating the hose above the hose gripper to form the preform, horizontally moving the blow mold together with the preform hanging therein and held by the hose gripper into a blowing position, moving a blow mandrel assembly from above into the inlet opening of the preform, closing the blow mold halves, and inflating the preform in the blow mold to form a container.
Claims20
A method of manufacturing a container made of plastic, comprising the following steps:
- continuously extruding a hose,
- positioning an opened blow mold around the hose so that the hose is arranged between two blow mold halves,
- closing a hose gripper arranged at the blow mold to clamp the hose and simultaneously holding the hose open at its upper side to form an inlet opening,
- separating the hose above the hose gripper to form a preform,
- horizontally moving the blow mold together with the preform hanging therein and held by the hose gripper in a blowing position,
- inserting a blow mandrel assembly from above into the inlet opening of the preform,
- closing the blow mold halves, and
- inflating the preform in the blow mold to form a container.
- wherein the hose gripper clamps the hose with two gripping areas at two locations spaced apart from each other, so that the inlet opening comprises an oval cross-section.
A blow mold for manufacturing a container made of plastic, comprising:
- two blow mold halves, forming the container,
- and a hose gripper with at least one gripping element on an upper side of one blow mold half and at least one opposite gripping element on an upper side of another blow mold half,
- wherein the gripping elements are movable relative to the blow mold half, so that a hose arranged between opened blow mold halves is clampable by the gripping elements without closing the blow mold halves.
- wherein the hose gripper includes two gripping areas, each of which is for clamping the hose, and wherein the two gripping areas are spaced apart from each other to form an inlet opening with oval cross-section in the hose.
Dependencies are inferred from the claim text.