Process for the production of a flame resistant to nonflammable

Details Process for the production of a flame resistant to nonflammable Process for the production of a flame resistant to nonflammable

1992-03-19

1993-11-23

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Plaster board making

156 40, 156 41, 156 42, 156 43, 156 44, 156 45, 156242, 156243, 15624422, 156324, B32B 3106

Patent

active

052640574

ABSTRACT:
A flame resistant to nonflammable composite panel is produced from a nonextrudable core mixture with a pourable, nonflammable filling material and a binder, and on both sides cover strips flexibly bonded to the core. For a continuous production of the composite panel in one operation, the core mixture is poured onto an inrunning lower cover strip, in contact with a lower adhesive film facing the core mixture, and a pile is formed there, extending over the entire width of the adhesive film, both continuously and uniformly drawn through a V gap and compacted there for the first time and calibrated to thickness, an upper adhesive film, upwardly limiting the precompacted core mixture, is fed in and brought into contact with a continuously fed cover strip and the sandwich is pressed with further compaction, heated, cooled and cut to the final length of the composite panel. The apparatus for carrying out the process preferably comprises a double-belt press for the concluding pressing and heating, for maintaining the temperature and for cooling.

REFERENCES:
patent: 3616173 (1971-10-01), Green et al.
patent: 4052958 (1977-10-01), Delves
patent: 4288263 (1981-09-01), Delcoigne et al.
patent: 4318761 (1982-03-01), Dockray et al.
patent: 4648922 (1987-03-01), Marks et al.
patent: 5148645 (1992-09-01), Lehnert et al.

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