Apparatus for spreading a particle mass

Details Apparatus for spreading a particle mass Apparatus for spreading a particle mass

1991-07-10

1993-04-13

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

Air felting type shaping means

Means forming running length product

425 801, B29C 3914, B28B 502

Patent

active

052021335

ABSTRACT:
A spreading unit which may be used for the spreading of particles for the production of thin pressed board or as a cover layer or face layer for a multilayer pressed board in conjunction with other spreading units along a belt upon which a mat of the mixture of particles and glue is to be formed. The spreading unit has a bunker and a discharge system for discharging a raw material stream in free-fall which is intercepted by an air classifier spreading the particles onto the belt in parabolic paths. In a region directly below the raw-material discharge and over a portion of the parabolic paths, a ball-collecting unit, for example a disk grate, is provided to intercept the balls while allowing the particles to pass without altering their classification. Fine particles of the parabolic paths beyond the ball catcher pass directly onto the belt.

REFERENCES:
patent: 3051219 (1962-08-01), Kaiser
patent: 3435106 (1969-03-01), Hager
patent: 4063858 (1977-12-01), Axer et al.
patent: 4068991 (1978-01-01), Ufermann et al.

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