Process for the continuous production of composite foam panels a

Details Process for the continuous production of composite foam panels a Process for the continuous production of composite foam panels a

1984-04-23

1986-07-15

Anderson, Philip

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 453, 264 462, 264145, 264257, 264DIG2, 425115, 425817C, B29C 3916, B29C 3918, B29C 3920

Patent

active

046006370

ABSTRACT:
A liquid mixture containing a heat-expandable resin and a catalyst is cast onto a lower facing, which is heated from below to cause expansion of the mixture and hardening of its lower part. The upper surface of the expanding mixture is covered with an upper facing applied while that portion is still soft, and the composite formed thereby is introduced to a heated enclosure while the upper part remains soft. The thickness of the formed composite, and panels derived thereof, is calibrated or limited by opposed conveyors within said thermal enclosure, which limits the maximum expansion to a value less than the theoretical potential expansion of the foam, allowing hardening to be completed, and subsequent cutting of the composite into panels.

REFERENCES:
patent: 3821337 (1974-06-01), Bunclark et al.
patent: 4252515 (1981-02-01), Meunier et al.
patent: 4332754 (1982-06-01), Meunier et al.

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