Search International and National Patent Collections
|1. (WO2018161517) PRESSURE-RESISTANT BASIC LID, POP TAB, AND BEVERAGE CAN HAVING POP TAB|
|Applicants:||SUZHOU SLAC PRECISION EQUIPMENT CO.,LTD
|Title:||PRESSURE-RESISTANT BASIC LID, POP TAB, AND BEVERAGE CAN HAVING POP TAB|
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.