METHOD AND APPARATUS FOR MANUFACTURE OF FLAT FIBER-REINFORCED ARTICLES Russian patent published in 2007 - IPC B29C44/32 B30B5/06 

FIELD: process for manufacture of flat fiber-reinforced composite article which may be used as construction or packaging material.

SUBSTANCE: method involves placing fibers on lower substrate; applying liquid foam hardening binding agent onto fibers so as to completely coat fibers with binding agent; feeding fibers coated with binding agent and positioned between upper and lower substrates into space between upper and lower pressing plates continuously movable on upper side relative to lower side of fibers with binding agent, with fibers coated with binding agent moving at the velocity of pressing plates allowing binding agent to be foamed, expanded and hardened between upper and lower pressing plates; removing substrates from hardened article. Method further involves manufacturing cohesion fibrous mat from fibers. Before applying of binding agent onto mat, thickness of fibers makes from about 0.5 mm to about 0.8 mm, width - from 0.3 mm to 2 mm, and length of at least 80% of fibers makes at least 100 mm, moisture content of fibrous mat before application of binding agent is at least 5%. Method further involves applying binding agent onto mat so as to form mixture of binding agent and fibrous mat. Mixture contains fibers close to upper surface of mat, said surface facing upper pressing plates, and to lower surface of mat facing lower pressing plates. Mixture of mat fibers and binding agent is moved by means of upper and lower substrates between which said mixture is positioned. Before removal of substrates, mixture is exposed to pressure of from at least 0.8 bar but not in the excess of 5 bar to result in hardening of flat article having thickness of from about 10 mm to about 150 mm. Also described are apparatus for manufacture of flat fiber-reinforced composite article and flat fiber-reinforced composite rigid article.

EFFECT: minimized manufacture costs and improved quality of article having stable shape.

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