Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1978-03-20
1980-02-19
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 18, 34 41, 34143, F26B 320
Patent
active
041887301
ABSTRACT:
A heated metal plate dryin system for drying either green veneer or partially dried veneer can have a plurality of modular hot presses mounted on a frame. At a loading station, individual sheets of veneer to be dried or redried are fed into a hot press, and at an unloading station the dried veneer sheets are unloaded from the system. Within each individual modular hot press, a direct contact drying process occurs that functions to reduce the moisture content of a veneer sheet down to the desired uniform level such as within a range of from 1 to 10%. The drying process accepts veneer of different species, thickness, and beginning moisture contents and the controlled process variables include contact time, temperature and pressure.
Each individual modular press can be multi-opening and has the ability to open and close on command. Specially designed heated metal plates are part of each press and each plate has substantially parallel grooves on at least one surface. The modular presses are mounted on the frame such that they may be tilted at the unloading station to facilitate unloading of the dried veneer sheets. At the loading station, a loading apparatus functions to sequentially feed individual veneer sheets into the openings. The loading apparatus is pivotally mounted. Also provided is an aligning apparatus for ensuring proper alignment of each veneer sheet within its respective opening after being loaded. The modular presses in one embodiment are mounted on a carousel frame structure that is rotatable on a main bearing so each modular press indexes past the loading and unloading stations.
REFERENCES:
patent: 163403 (1875-05-01), Pfeffer
patent: 508112 (1893-11-01), Miller
patent: 921067 (1909-05-01), Bentley
patent: 1677963 (1928-07-01), Ford
patent: 2332886 (1943-10-01), Basler
patent: 2992152 (1961-07-01), Chapman
patent: 3064363 (1962-11-01), Ikeuchi
patent: 3318014 (1967-05-01), Whitlow
patent: 3503140 (1970-03-01), Hildebrand
patent: 3896559 (1975-07-01), Martin
patent: 4017980 (1977-04-01), Kleinguenther
"Drying of Thick Ply Sheets for Core Use by Hot Platen Heating", Tsutsumoto et al., 1958.
"Hot Platen Drying of Single Plies", Nozaki et al., 1975.
"Hot Platen Drying Tests of Unit Plies", Yoshida et al., 1971.
"Some Aspects of the Influence of Hot Pressing on the Shrinkage of Thin Wood", Ohnuma et al., 1958.
"The Dryad-The Automatic Hot Plate Veneer Drier", Publication of Merritt Engrg. Sales Company.
"The Air Seasoning and Kiln Drying of Wood", Henderson, 1951.
"Tyler Machinery Inc. of Warsaw, Indiana", Photographs of Commercially Available System.
World Wood, "Danish Firm Maximizes Utilization", 1974.
"Drying Wood to a Controlled Final Moisture Content by Hot Pressing and Steaming", Lutz, 1974.
"Press Drying Nine Species of Wood", Hittmeier et al., 1968.
"Press Drying Green, Flatshoed Walnut Veneer to Reduce Buckling and End Waviness", Lutz et al., 1974.
"Theoretical Considerations in the Drying of Wood at Pressures Above Atmospheric", Hann, 1966.
"Drying Yellow-Poplar at Temperatures Above 100.degree. C.", Hann, 1964.
"Platen Drying of Aspen Sapwood", Turkia et al., 1978.
"Operational Variables in Press Drying Eastern Hemlock", Ziegler et al., 1971.
"Technical and Economic Considerations in the Platen Drying of Aspen Sapwood and Paper Birch Cut Stock", Haygreen et al., 1968.
"Techniques for Drying Thick Southern Pine Veneer", Koch, 1964.
"Accelerated Methods of Drying Thick Sliced and Thin Sawed Loblloy Pine", Kimball, 1968.
"Press Drying of Beechwood", Schmidt, 1967.
"The Mechanical Drying of `Ash` Eucalypt Veneers", Kauman et al., 1955.
"Experiments on Drying of Veneers", German Publication of Keylwerth, 1953.
Allen Richard C.
Pierson Darrell E.
Schwartz Larry I.
Weyerhaeuser Company
LandOfFree
Method for veneer redrying and handling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for veneer redrying and handling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for veneer redrying and handling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-647475