Foam panels and blocks of hollow profiles

Details Foam panels and blocks of hollow profiles Foam panels and blocks of hollow profiles

1986-11-17

1988-07-05

Van Balen, William J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428159, 428166, 428188, 4283166, E04C 108, E04C 244, B32B 320

Patent

active

047554088

ABSTRACT:
According to the present invention, novel foam panels and blocks are provided which are produced by welding and/or adhering foam tubes to one another. The foam panels are used particularly as insulating and/or drainage panels, and the foam blocks are used for the production of super lightweight panels the cavities of which are optionally filled with gypsum, cement, or other material. Composite structures made therefrom exhibit excellent sound-absorbent properties.
Moreover, the invention provides a process and an apparatus for welding foamed synthetic resin tubes to one another and/or to other foam materials. The synthetic resin surfaces to be welded together are guided by way of a spacer means at a distance past an electrically heated heat source to form a heating channel where the surfaces are melted and pressed together thereafter. The process and the apparatus are suited especially well for welding foams of non-crosslinked low-density polyethylenes.

REFERENCES:
patent: 2369006 (1945-02-01), Banks
patent: 2994327 (1961-08-01), Otto et al.
patent: 3297189 (1967-01-01), Carrasse
patent: 3890416 (1975-06-01), Bauer et al.
patent: 4435463 (1984-03-01), Roellchen
patent: 4618517 (1986-10-01), Simks, Jr.

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