Deutsche Solvay-werke Gmbh

Kraftanlagen Ag

Janos Muennich

Helmut Kaeufer

A process for the production of panels, webs, panel-like moldings or profiles from plastics, of high mechanical strength owing to a molecular orientation by compressive roll-stretching within the nip of at least one pair of pressure or compression rolls at roll and material temperatures below the crystallite melting point or the softening point of the plastic and above 303.degree. K. under compressive stretching. The compressive roll-stretching of the panels, webs, panel-like moldings or profiles takes place with the same or approximately the same circumferential speed of the pressure or compression rolls or without friction at pressures of 20 to 250 MPa, at a degree of compressive stretching of over 1.1.

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Berlin, Germany

Janos Muennich