Powder coating

Details Powder coating Powder coating

1996-01-29

1996-10-22

Foelak, Morton

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

1062868, 1062871, B32B 516

Patent

active

055675212

ABSTRACT:
A powder coating is provided, comprising a particulate material having a particle distribution satisfying the following requirements:
(a) the volume 50% diameter is from 7 .mu.m to 20 .mu.m;
(b) the proportion by volume of particles having a particle diameter of not less than 30 .mu.m is not more than 20%; and
(c) the proportion by population of particles having a particle diameter of not more than 5 .mu.m in the particulate material is not more than 65%, the particulate material also has an external additive attached to the surface thereof, the percent coverage by the external additive (determined by an equation described in the specification) being from 30 to 200%. The powder coating can provide a film having a reduced thickness with an improved leveling, thus improving working efficiency. In addition, the fractions of the powder coating from the coating process can be recycled and re-used, thereby reducing the total cost.

REFERENCES:
patent: 4124734 (1978-11-01), Alterman et al.
patent: 4600604 (1986-07-01), Suita
patent: 4654266 (1987-03-01), Kacknik
patent: 5362566 (1994-11-01), George et al.
patent: 5368936 (1994-11-01), Braunschweig et al.

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