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1. (WO2018161517) PRESSURE-RESISTANT BASIC LID, POP TAB, AND BEVERAGE CAN HAVING POP TAB

Pub. No.:    WO/2018/161517    International Application No.:    PCT/CN2017/101598
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Thu Sep 14 01:59:59 CEST 2017
IPC: B65D 17/34
B21D 51/44
Applicants: SUZHOU SLAC PRECISION EQUIPMENT CO.,LTD
苏州斯莱克精密设备股份有限公司
Inventors: ZHANG, Weiwei
张玮玮
LI, Huimian
李会免
XIONG, Kang
熊康
WANG, Bingsheng
王炳生
Title: PRESSURE-RESISTANT BASIC LID, POP TAB, AND BEVERAGE CAN HAVING POP TAB
Abstract:
Provided are a pressure-resistant basic lid, a pop tab, and a beverage can having a pop tab. The following sections are sequentially arranged in a direction from a periphery to the center of a cross section of the basic lid: a can-sealing region, a countersink section, a curved section (R6) of an insert ring, an upwardly extended section of the insert ring, and a central cover surface. The countersink section comprises a first linear section (L1), a fourth curved section (R4) and a fifth curved section (R5). The upwardly extended section of the insert ring comprises a second linear section (L2) and a seventh curved section (R7). The fifth curved section (R5) and the curved section (R6) of the insert ring are arranged at two sides of an auxiliary line (A) serving as a boundary. A distance between projections, on the auxiliary line (A), of the center of a circle associated with the fifth curved section (R5) and the center of a circle associated with the curved section (R6) of the insert ring is less than or equal to a radius of the circle associated with the curved section (R6) of the insert ring. The above basic lid can be formed easily, thereby reducing difficulty and costs relating to production. Moreover, the basic lid has higher pressure resistance compared with prior art lids.