| 摘要 |
A method of producing plastics film (8) wherein high-voltage pulses are impressed between a pair of electrodes (4,6), thereby creating pores in a plastics film which is fed into the spark gap (5) between electrodes, characterised in that the number of discharge sparks which are generated subsequent to the pore-opening discharge spark is controlled by monitoring the pore-opening discharge spark and subsequent discharge sparks within one of the high-voltage pulses. The method produces fine pores having a uniform pore diameter under controlled circumstances. |
