Title:
PRESSURE-RESISTANT BASIC LID, POP TAB, AND BEVERAGE CAN HAVING POP TAB
Document Type and Number:
WIPO Patent Application WO/2018/161517
Kind Code:
A1
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.
Inventors:
ZHANG WEIWEI (CN)
LI HUIMIAN (CN)
XIONG KANG (CN)
WANG BINGSHENG (CN)
LI HUIMIAN (CN)
XIONG KANG (CN)
WANG BINGSHENG (CN)
Application Number:
PCT/CN2017/101598
Publication Date:
September 13, 2018
Filing Date:
September 13, 2017
Export Citation:
Assignee:
SUZHOU SLAC PREC EQUIPMENT CO LTD (CN)
International Classes:
B21D51/44; B65D17/34
Domestic Patent References:
| WO2012039433A1 | 2012-03-29 |
Foreign References:
| CN106672390A | 2017-05-17 | |||
| CN103781568A | 2014-05-07 | |||
| CN1859990A | 2006-11-08 | |||
| CN1639016A | 2005-07-13 | |||
| CN103282138A | 2013-09-04 | |||
| CN1476359A | 2004-02-18 | |||
| JP2003205940A | 2003-07-22 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT&TRADEMARK AGENCY LTD. (CN)
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