Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Projecting particles in a moving gas stream
Patent
1998-07-15
2000-02-15
Davis, Robert
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Projecting particles in a moving gas stream
425 801, 425218, 4253241, 425453, 425406, B27N 302, B27N 316
Patent
active
060249056
ABSTRACT:
The present invention describes a device for the discontinuous manufacture of shaped composite articles and an appropriate process. The device comprises means (1) for the mixing of fibrous and/or granulated material with a thermoplastic and/or thermosetting binder, means (2) for conveying the mixture to a mat forming chamber (3), the mat forming chamber (3) being a sealed unit made of a lower half (4) and a movable upper half (5) comprising an outer hood and a rotatable drum (6) with a part template (7) having a perforated pattern of the desired article on the circumferential surface of the drum (6), means (8) to adjust the pressure at the surface of the drum (6) and providing a closed loop air circuit via the perforated pattern, skim rollers (9) for detection of the height of said articles, means (10) for the opening of the mat forming chamber (3) allowing the continuation of rotation and/or sucking during the movement of the drum (6) to a drop position (11), second means (12) for conveying the preformed article from drop position (11) to a molding and/or curing station (13).
REFERENCES:
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patent: 4163036 (1979-07-01), Ransmayr et al.
patent: 4881695 (1989-11-01), Beisswanger
patent: 5447677 (1995-09-01), Griffoul et al.
Davis Robert
HP-Chemie Pelzer Research & Development LTD
Nguyen Thukhanh T.
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