BOTTLE CAN MEMBER, BOTTLE, AND THREAD FORMING DEVICE

摘要

An effective thread number in the thread section 13 which is disposed on the mouth section 12 of the bottle 11 is formed to be 2.2. That is, the thread section 13 is formed such that the thread section 13 should serve effectively in the mouth section 12 such that an interval between a start position 13a and an end position 13b should be 2.0 to 2.5. In the bottle can member 11 which has such a thread section 13, an outer diameter of the thread section 31 which is formed on the mouth section 12 is 28 to 38 mm. Also, the thickness of the mouth section 12 is 0.25 to 0.4 mm. The thread section 13 which has the effective thread number 2.0 to 2.5 is formed by eight-thread per inch pitch. By doing this, it is possible to put the cap desirably.