Rosenberg, Klein & Bilker
Plastic film processing apparatus
 A plastic film processing apparatus adapted for processing tiny pores in a plastic film, enabling it to be torn in any direction, the apparatus including two lifting blocks vertically adjusted by a respective adjusting screw, an impression cylinder revolvably mounted between the lifting blocks by bearings, a film transfer cylinder having fine grains raised from the periphery and peripherally disposed in contact with the impression cylinder for processing tiny pores in the plastic film passing through. 
B B B B
B26F B26D B26F B29C
inventional inventional inventional inventional
Chi-Ping
Chang