Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1983-02-16
1984-11-27
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 466, 264 467, 264 469, B29D 2704
Patent
active
044850573
ABSTRACT:
Insulated pipeline components are produced by positioning a steel pipe in the cavity of a casting mold with the pipe ends protruding therefrom. The dimensions of the cavity are greater than those of the inner pipe, and in the space between the inner pipe and the contact surfaces of the mold cavity a plastic powder is introduced, the powder being melted by heating of the mold. The mold is then rotated in a manner well known in rotational molding technique so that centrifugal force drives the molten plastic material against the contact surfaces of the mold cavity to form a plastic jacket; and after the mold has cooled the component is removed and expandable plastic material is supplied to the space between the inner pipe and the plastic jacket and is foamed. The resulting component has an exactly centered inner pipe, lacks conventional joints and can be produced at relatively low cost in a manner complying with industrial safety requirements.
REFERENCES:
patent: 3258512 (1966-06-01), Flower et al.
patent: 3359351 (1967-12-01), Bender
patent: 3394207 (1968-07-01), Andersen
patent: 3426110 (1969-02-01), Kesling
patent: 3505137 (1970-04-01), Kliene
patent: 4009732 (1977-03-01), Martin et al.
patent: 4049480 (1977-09-01), Kutschke
patent: 4158686 (1979-06-01), Boeckmann
patent: 4276245 (1981-06-01), Ault
patent: 4384905 (1983-05-01), Gros
Kristensson Olle
Nystrom Bo R. G.
Anderson Philip
Lindab Nord AB
LandOfFree
Method of producing insulated pipeline components does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing insulated pipeline components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing insulated pipeline components will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2133926