Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1985-12-02
1986-09-16
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
428283, 428284, 428300, 428402, B32B 512
Patent
active
046122249
ABSTRACT:
A fibrous web useful for compression molding stiff, board-like structural substrates for panels is formed of a thoroughly intermixed blend of wood fibers and synthetic plastic fibers with a dry, powdery, resinous molding material uniformly disbursed throughout the blend. The mass of intermixed fibers and resinous molding material is covered with a thin, randomly oriented, fibrous scrim material and the fibers are locked to each other and to the scrim mechanically by means of needling them together. The web is formed by drying wood fibers, spreading them into a mat, covering the mat with the synthetic fibers and thereafter, dispersing the fibers through a dispersion chamber and re-collecting and re-spreading them into a web by means of a picker roller, gravity dropping a powdery resinous molding material upon the web, redistributing and intermixing the fibers and the molding material with a second picker roller, applying the scrim and needling the combined scrim and fiber web for mechanically interlocking them.
REFERENCES:
patent: 2483405 (1949-10-01), Francis
patent: 3629048 (1971-12-01), Davison
patent: 3924040 (1975-12-01), Addie et al.
patent: 3935046 (1976-01-01), Kurnan et al.
patent: 4146564 (1979-03-01), Garrick et al.
patent: 4418031 (1983-11-01), Doerer et al.
patent: 4474846 (1984-10-01), Doerer et al.
Bell James J.
Sheller-Globe Corporation
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