DYNAMIC SEAL TO ENABLE MOVEMENT OF A FILM OR FIBER THROUGH A PRESSURIZED SPACE WHILE MAINTAINING A DESIRED PRESSURE

摘要

The present disclosure describes devices capable of continually and controllably passing a polymer film or fiber through a pressurized vessel, while maintaining a desired pressure inside the vessel. In certain embodiments, the devices of the present disclosure include dynamic seals capable of limiting the gas flow from the pressurized vessel to lower pressure environments.

主权项

1. A method of withdrawing a material from a pressurized vessel, comprising:
withdrawing a material from a gas-pressurized, liquid-filled vessel from a seal below a liquid level; applying a force with the seal on the material to limit a flow of liquid from the seal while creating a layer of liquid interposed between the material and the seal; and controlling a pressure within the vessel with a gas.