Gel slab dryer with improved perimeter seal

Drying and gas or vapor contact with solids – Apparatus – Vacuum

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34143, 34151, F26B 1330

Patent

active

047887788

ABSTRACT:
An apparatus for drying gel slabs which includes a porous support pad resting in a recess, a flexible vacuum-retaining cover sheet covering the support pad and the periphery of the recess, and means for pulling a vacuum down from underneath the support pad, is improved by adding a perimeter groove around the periphery of the recess, preferably spaced a small distance therefrom, with channels connecting the groove to the recess to transmit the vacuum. The perimeter groove provides a faster distribution of the vacuum, and provides a further means of sealing the cover sheet around the periphery of the recess, to provide more even and more reliable gel drying.

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