CHAPTER XI

DRYING OF RUBBER

Air-drying of crepes--Artificial driers for crepes--Vacuum drying--Hot-air driers--Michie-Golledge system--Rate of air- drying--When drying takes place--Increase in weight of drying crepe--Differences in weight--Aids to normal drying--Smoke- curing of sheet rubber--Instruments for recording temperature --Temperatures of smoke-house--Period of drying--Fuels for smoking--Sun-drying of sheet rubber--Artificial driers for sheet rubber 132