Method and machine for the continuous manufacture of panels

Details Method and machine for the continuous manufacture of panels Method and machine for the continuous manufacture of panels

1974-08-22

1976-08-31

Whitby, Edward G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264 462, 264 466, 425224, 425DIG119, 428 71, 428310, B32B 520

Patent

active

039779319

ABSTRACT:
The invention relates to a method for the continuous manufacture of panels of synthetic material with at least one surface covered with a rigid facing by means of a machine comprising: devices for the continuous advance of the facings; a distributing station to deposit, on a lower facing, in liquid form, expandable synthetic material which will constitute the inner layer of the panel; and continuous conveyor means, arranged above and below the plane of advance of the panels.
This method comprises the steps of:
Applying, on to the synthetic material in the liquid state, at the outlet of the distributing depositor, a sheet facing of non-woven material, relatively porous, gradually traversable by said synthetic material,
Subjecting said material thus covered to a gauging operation before the non-woven material is traversed by this material in the course of expansion,
And, after the gauging on to the non-woven material which has become adhesive by the traversal of the synthetic material and then presenting itself in the jell state, applying the rigid facing in plate form, by means of continuous conveyor means.

REFERENCES:
patent: 2841205 (1958-07-01), Bird
patent: 3231439 (1966-01-01), Voelker
patent: 3240846 (1966-03-01), Voelker
patent: 3270103 (1966-08-01), Kurtz
patent: 3389196 (1968-06-01), Stahl
patent: 3410931 (1968-11-01), Johnson
patent: 3630819 (1971-12-01), Conger
patent: 3748217 (1973-07-01), Mar et al.

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