Title:
CONTAINER LID MADE OF SYNTHETIC RESIN EQUIPPED WITH TAMPER EVIDENT CHARACTERISTICS
Document Type and Number:
Japanese Patent JP3939808
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress the expansion of a tamper evident skirt part, and prevent the bridging parts from breaking by a method wherein on both sides of the upper end of an axial directional breaking means, two pieces of high strength bridging parts of which respective cross sectional areas are within a specified range, and the difference of the cross sectional areas of which is a specified value or less, are formed.
SOLUTION: A first high strength bridging part 36c is formed counterclockwise from a location across an interval L1 in counterclockwise from the upper end of an axial directional breaking means 34. A second high strength bridging part 36d is formed clockwise from a location across an interval L2 clockwise from the upper end of the axial directional breaking means 34. The cross sectional areas of the first high strength bridging part 36c and the second high strength bridging part 36d are made 0.80-3.00 mm2, and a torque for the breaking is not made excessive, and also, a slit to constitute the axial directional breaking means 34 is prevented from expanding. Also, the difference of the cross sectional areas of the first high strength bridging part 36c and the second high strength bridging part 36d is made 0.50 mm2 or less, and the probability for breaking is prevented from decreasing for both of the high strength bridging parts.
Inventors:
Kaizuka Yoshihiro
Application Number:
JP10219497A
Publication Date:
July 04, 2007
Filing Date:
April 18, 1997
Export Citation:
Assignee:
Nihon Closure Co., Ltd.
International Classes:
B65D41/34; B65D49/12; (IPC1-7): B65D41/34; B65D49/12
Domestic Patent References:
| JP5029953U |
Attorney, Agent or Firm:
Naozumi Ono
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