which is the standard angle measure of a thread for bottle cap?

Check this:
http://www.eng-tips.com/viewthread.cfm?qid=171032
http://www.threadspecs.com/threadspecs-downloads.asp

Good luck!

fantastic!!!!!!! thanks

that's not right, plastic bottles have two different pressure angles.

below is a maximum of 10 degrees and above is greater than 35 degrees.

I do not remember exactly what degree is, so look for a table of specifications for bottle threads.

Hi,
I think there is no standard for the thread for bottle cap
I have seen the thread of a Coke bottle and I think the angle is 29 degrees (ACME theread), otherwise it is 30 degrees (Metric trapezoidal threads).