发明名称 Process for producing a safe opening container lid
摘要 A safe opening container lid having a bead side plate portion and a removable plate portion. The bead side plate portion has a first loop portion formed at the outer side of a tear line defining a removable plate portion, the loop portion being bent upwardly from the portion where the tear line is formed, the return portion of the loop portion that returns toward the tear line being spaced apart from the tear line forming portion, and the return portion being further bent outwardly at a position inward of the tear line. The removable plate portion has a second loop portion formed at the inner side of the tear line, the second loop portion being bent downwardly from the portion where the tear line is formed, the return portion of the second loop portion that returns toward the tear line being spaced apart from the tear line forming portion, and the return portion being further bent inwardly at a position outward of the tear line. A tear tab is fixed to the removable plate portion such that the tip of the tab is disposed at or near the tear line. Also disclosed is a process for producing this safe opening container lid.
申请公布号 US5174706(A) 申请公布日期 1992.12.29
申请号 US19920818916 申请日期 1992.01.10
申请人 TANIUCHI, KEIJI 发明人 TANIUCHI, KEIJI
分类号 B21D51/44 主分类号 B21D51/44
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