Air permeability tester for tire rubber and test method therefor

摘要

The present invention relates to a syringe which is capable of performing a comparative test of a plurality of rubber specimens 10 made of a rubber composition for a tire at the same time with respect to the air permeability, A mounting plate 3 on which a plurality of through holes 31 are formed is provided so as to be able to move up and down in the test tank 1 filled with the liquid 2, A predetermined air pressure is applied to the interior of the cylinder 4 through the air inlet 43 by clamping the rubber specimen 10 by a mounting cylinder 4 provided with an air inlet 43 and a pressure gauge 44 on one side of the outer circumferential surface The internal pressure of the cylinder 4 in which the air is reduced by the permeation of the rubber specimen 10 is measured by the pressure gauge 44.