APPARATUS FOR MEASURING AND OF CONTROLLING THE GAP BETWEEN POLYMER SHEET COOLING ROLLS

APPARATUS FOR MEASURING AND OF CONTROLLING THE GAP BETWEEN POLYMER SHEET COOLING ROLLS

Heating and extruding a polymeric sheet having a predetermined thickness and introducing it into and through a gap between cooling rolls, measuring directly by laser beam and without reflection the gap between the cooling rolls, and controlling the gap to control minimal pressure on the softened and...

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Bibliographische Detailangaben
1. Verfasser: NISSEL, FRANK R
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Heating and extruding a polymeric sheet having a predetermined thickness and introducing it into and through a gap between cooling rolls, measuring directly by laser beam and without reflection the gap between the cooling rolls, and controlling the gap to control minimal pressure on the softened and heat-plastified sheet.