Pressure sealing method

摘要

A pressure sealing method for sealing the inlet and outlet parts of a high pressure steamer which performs steaming with saturated steam of high temperature and high pressure in processing a textile product for desizing, scouring, bleaching, dyeing or the like. A pair or more than one pair of air pressure chambers made of a gas or fluid exudative material formed in a hollow cylindrical or semicylindrical shape or made of a gas impermeable thin plate are arranged to confront one another at the inlet or outlet part in the high steamer for the entry or exit of the treated product. The pressure of a pressure chamber of the steamer and that of atmospheric parts are shut off by one pair or more than one pair of nipping faces of these air pressure chambers which are pressed against one another. The treated product is allowed to pass through the inlet and outlet parts against the combined pressure developed between the nipping faces.