Manufacture of sheet material

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...

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Details

264175, 264236, 264255, 264300, 264308, B29D 714

Patent

active

042947901

ABSTRACT:
A process for the production of fibre-reinforced sheet material in indefinite lengths comprises a first rolling step wherein a curable dough of thermoplastic polymer containing reinforcing fibres is rolled onto one face of a band to form a first coating which is dried prior to a second rolling step wherein further dough is rolled onto the first coating to form with the first coating a single layer; said single layer is dried, stripped from the band and cured. The dough includes a special solvent system comprising a solvent for the polymer and a non-solvent liquid, to give the dough a "release" characteristic.

REFERENCES:
patent: 1347918 (1920-07-01), Stafford
patent: 1877651 (1932-09-01), Eisenhardt
patent: 2120935 (1938-06-01), Groff
patent: 2123180 (1938-07-01), Corbin, Jr. et al.
patent: 2309342 (1943-01-01), Dent et al.
patent: 2530906 (1950-11-01), Palumbo
patent: 2834991 (1958-05-01), Hardman
patent: 3158669 (1964-11-01), Greenlie et al.
patent: 3694304 (1972-09-01), Palumbo

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