Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1981-01-08
1982-08-31
Anderson, Philip
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
156 79, 156550, 264 462, 264101, 425224, 425817C, B29D 2704
Patent
active
043472818
ABSTRACT:
A plastic foam-forming mixture (20) is dispensed between upper and lower paper sheets (11 and 17) and the whole conveyed through metering rollers (14 and 15) to spread the mixture. The mixture is allowed to expand under a constant pressure supplied by a floating drag platen (21). Suction is applied to the upper sheet through apertures in the platen. Suitably the platen consists of a series of rigid slats (22) hinged lengthwise transversely to the direction of the sheets, imparting longitudinal flexibility to the platen in that direction. Suction may be applied through apertures in the ends of every third or fourth slat. Improves the evenness of foam board.
REFERENCES:
patent: 3984195 (1976-10-01), del Carpio
patent: 4097210 (1978-06-01), Romanillos
patent: 4120626 (1978-10-01), Keller
patent: 4150075 (1979-04-01), Schmitzer et al.
"A New Development Machine for the Continuous Lamination of Rigid Urethane Foam" in Rubber and Plastics Age, Jan. 1966, pp. 57-59.
Futcher Steven
Gardener John J.
Hodgson Victor F.
Anderson Philip
Imperial Chemical Industries Limited
LandOfFree
Foam board having improved evenness and the method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Foam board having improved evenness and the method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foam board having improved evenness and the method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2184320