Methods and apparatus for making grids from fibers

Details Methods and apparatus for making grids from fibers Methods and apparatus for making grids from fibers

1991-06-06

1994-01-11

Chiesa, Richard L.

Plastic and nonmetallic article shaping or treating: processes

Removal of liquid component or carrier through porous mold...

162223, 162224, 162382, 264120, 264257, 264313, 264517, 425 84, 4254031, 4254051, B28B 152

Patent

active

052778541

ABSTRACT:
Method and apparatus to form grids of open cells from fibers, especially wood fibers and fibers from waste paper and mixed waste materials. The invention utilizes a screen carrying a plurality of elastomeric pads of predetermined sizes arranged thereon in predetermined spaced relation to each other. The fiber is deposited between the pads but not above the pads. The deposited fibers and the pads are compressed normal to the screen, which causes the fiber in the spaces between the pads to be consolidated both normal and parallel to the screen, resulting in a open grid having cells of the shape of the pads. Numerous variations are provided including several continuous production embodiments. The invention uses state of the art technology for virtually all aspects.

REFERENCES:
patent: 3166467 (1965-01-01), Reifers et al.
patent: 3255062 (1966-06-01), Wilkins
patent: 3290421 (1966-12-01), Miller, Jr.
patent: 3354248 (1967-11-01), Haas et al.
patent: 3449207 (1969-06-01), Modersohn
patent: 4162877 (1979-07-01), Nyberg
patent: 4388263 (1983-06-01), Prunty
patent: 4702870 (1987-10-01), Setterholm et al.
patent: 4753713 (1988-06-01), Gunderson

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