Heated platten press

Details Heated platten press Heated platten press

1980-12-11

1981-12-22

Flint, Jr., J. Howard

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Positioning of a mold part to form a cavity or controlling...

425141, 425150, B29C 306, B30B 1524, B29J 504

Patent

active

043070507

ABSTRACT:
A heated platten press for the manufacture of particle board features a pair of heatable press plattens 1 and 2 which are located between relatively movable press beams. The platten 1 is constructed as a rigid platten to define a flat reference surface for one side of the board to be pressed and is constructed so that it does not deflect either mechanically or thermally during operation of the press. The second press platten 2 is constructed to be elastically deflectable and is supported on a plurality of individual piston-in-cylinder arrangements 4 forming an array of adjacent substantially contiguous support fields which are substantially uniformly distributed over the whole area of the compensation platten. In operation a board is pressed and the deviation in thickness of the board from the nominal thickness is measured at points corresponding to the positions of the piston-in-cylinder arrangements within the array. The measured deviations are then used to control the individual piston-in-cylinder arrangements so as to correct the deviations in thickness.

REFERENCES:
patent: 2509783 (1950-05-01), Richardson
patent: 2562876 (1951-08-01), Balza
patent: 3191232 (1965-06-01), Haller
patent: 3640660 (1972-02-01), De Mets
patent: 3881852 (1975-05-01), Ahriveiler
patent: 4164387 (1979-08-01), Schermutzki et al.
patent: 4269580 (1981-05-01), Wright

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