Invention Application
- Patent Title: Method Of Forming Hollow Articles
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Application No.: US16043594Application Date: 2018-07-24
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Publication No.: US20190060976A1Publication Date: 2019-02-28
- Inventor: Christian Krätzig , Mark Whalley , Alan William Noble , Richard Turner , Matthias Seiler
- Applicant: Presspart Manufacturing Ltd.
- Priority: EP17187789.7 20170824
- Main IPC: B21D51/26
- IPC: B21D51/26 ; B21D22/28 ; B65D83/38 ; A61M15/00

Abstract:
A method of forming a hollow article (2) comprises the steps of providing a metal blank in the form of a disk. Subsequently, a metal blank is transferred to a first forming station which comprises a punch and a die. A metal blank is formed into a cup having a sidewall and a closed base. A boundary lubrication is provided between the die and the metal blank by application of a lubricant.Hereinafter, the metal cup is provided to a set of forming stations in a deep drawing transfer press. The set of forming stations comprises at least one set of punches and dies. Said metal cup is deep drawn into a hollow article (2) having a sidewall (4) and a closed base (7) with an inner and an outer surface (, 8, 6, 9) by the action of said at least one set of punches and dies. Subsequently, the hollow article (2) is provided to a subsequent forming station in the deep drawing transfer press.Hereinafter, an individual identification mark is supplied to the outer surface (6, 9) of the container sidewall (4) and/or of the base (7) by means of laser engraving at said subsequent forming station.
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