A blow-molding operation is used to produce a bot-tle with a diameter. ef 2.250 in and a wall thickness of 0.045 in. The parison has a thickness of 0.290 in. The pressure used to inflate the parison is 38.0 lb/in2. The observed die swell ratio is 130.
(a) What is the required diameter of the parison?
(b) What is the di-ameter of the die?
(c) What is the tensile stress in the bottle as it is reaches its inflated size?