发明名称 IMPROVEMENTS IN OR RELATING TO A METHOD OF FORMING METAL ARTICLES
摘要 There is provided a method of forming a shaped metal closure from a tubular blank (10) having a closed end and an open end, comprising the steps of: i. at least one expansion step at a point axially displaced from the open end; and ii. at least one reduction step at a point axially displaced from the open end.
申请公布号 WO2010037996(A1) 申请公布日期 2010.04.08
申请号 WO2009GB01287 申请日期 2009.05.22
申请人 OBRIST CLOSURES SWITZERLAND GMBH;DUNWOODY, PAUL, ROBERT 发明人 DUNWOODY, PAUL, ROBERT
分类号 B21D51/26 主分类号 B21D51/26
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