Flotation method for orienting chips in the manufacture of surfa

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156246, 156302, 156305, 156278, 427222, 427348, 264112, 264128, 264298, B32B 516

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active

045526060

ABSTRACT:
A substantially non-overlapping tightly packed layer of plastic chips is formed and attached to the surface of a substrate by a method in which the chips are dispersed onto the surface of a liquid, flowing from a first location to a second location. The rate of flow of the surface of the liquid is reduced at the second location to cause the chips to pack together in a single-chip-thickness layer. The layer of chips is then removed from the liquid by passing a porous web upward at an angle from below the liquid surface through the chip layer-liquid interface. The chip layer is then transferred to a heat-sensitive transparent adhesive coating on a suitable prepared substrate and secured thereon by means of heat and pressure. A resinous wear layer which is transparent after fusion is then applied. Prior to fusion of the wear layer, it may be passed beneath a smoothing blade or, if a more embossed surface texture is desired, beneath an air knife to move some of the resinous wear layer material from between the chips onto the surfaces thereof.

REFERENCES:
patent: 3056224 (1962-10-01), Almy et al.
patent: 3150022 (1964-09-01), Vida
patent: 3551244 (1970-12-01), Forester et al.
patent: 3661662 (1972-05-01), Allen
Rickard, T. A., Concentration by Flotation, John Wiley and Sons, N.Y., 1921, pp. 45-49, TN 523R45.

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