METHOD OF DEWATERING IN A CONTINUOUS HIGH INTERNAL PHASE EMULSION FOAM FORMING PROCESS

摘要

A method for continuous High Internal Phase Emulsion (HIPE) foam production. A HIPE is produced then extruded onto a belt. After polymerization, a portion of the saturated aqueous phase is removed using a vacuum box. A nip insert is inserted under the vacuum box to raise the vacuum box leading to improved uniformity of the HIPE in the cross direction along the belt.

主权项

1. A method for removing an aqueous phase from an open-celled foam, the method comprising:
providing a belt comprising a cross directional width; providing an open-celled foam; providing a vacuum box, wherein the vacuum box comprises a nip insert, wherein the nip insert is located below the vacuum box and is in direct contact with the vacuum box; placing the open-celled foam on the belt; and passing the open-celled foam over the vacuum box to remove a saturated aqueous phase.