Drying and gas or vapor contact with solids – Apparatus – Stationary press type
Patent
1998-01-16
2000-03-21
Wilson, Pamela A.
Drying and gas or vapor contact with solids
Apparatus
Stationary press type
34143, 34 92, 100 90, 100325, F26B 904
Patent
active
060387858
ABSTRACT:
A vacuum dryer panel for a leather drying machine wherein a dryer panel comprising a porous screen is mounted over a perforated plate on the underside of a vacuum chamber positioned above a heated drying table on which leather skins are dried. The dryer panel comprises a layer of fine mesh screen preferably formed of a synthetic resin material mounted on a porous backing preferably formed of a synthetic resin material. The backing material is adapted to be mounted adjacent an outer side of the perforated plate and provides porosity between the screen and adjacent openings of the perforated plate. The backing material is sufficiently rigid to prevent the screen material from being pulled into openings in the perforated plate by a negative pressure on the upper side of the plate, so as to prevent marks in the dried leather. The edges of the dryer panel are folded over and incorporate reinforcing strips. Threaded fasteners fit through spaced openings in the edges for mounting the dryer panel to a vacuum chamber. The fasteners can be tightened to increase the outward tension on the dryer panel.
REFERENCES:
patent: 4438570 (1984-03-01), Dokoupil
patent: 5056239 (1991-10-01), Corner
patent: 5860222 (1999-01-01), Leander
Droukas Roger C.
Lawson Richard R.
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