Method and apparatus for measuring the gas and vapor permeability of films

摘要: 1,192,033. Measuring film permeability. NORWAY, CENTRAL INSTITUTE FOR INDUSTRIAL RESEARCH. July 19, 1967 [July 21, 1966], No. 33124/67. Heading G1S. In apparatus for measuring the permeability of films 4 is clamped in recess 2 a test cell 1 to divide into two chambers 2, 3 chamber being supplied with gas via pipe 5 and 14. use, at predetermine time intervals total volume 3, including permeated gas, flushed away by further supply carrier passed through chromatograph 17 detector 18. Both may be humidifier 8, 16 before entering their respective 1a, 1b. A closing valve 19 provided controlling flow relative calibrating chromatograph. This includes rotatable disc three equal diameter apertures, equispaced around periphery disc, apertures graduated diameters hence volumes on opposite sides value rotated so that controlled fed 14 thence calibration. bimetallic temperature feeler measure film.