B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/00 (2006.01) B29C 47/06 (2006.01) B29C 47/88 (2006.01)
Patent
CA 2185917
A process and an apparatus for the pro- duction of a flat mono- or multi-layer thermo- plastic film (2) for packaging, comprising a flat extrusion die (1) and a chill roll (6) provided with an internal cooling system. A liquid knife device (10) is associated with said chill roll (6) for spouting a continuous and substantially uniform liquid knife (20) at a predetermined speed and temperature, said liquid knife device (10) being provided with a slot (19) which has an adjustable outflow cross section (21) and is fed with a liquid at a predetermined tempera- ture and flow rate.
La présente invention concerne un procédé et un appareil de production de film thermoplastique (2) mono ou multicouche destiné à l'emballage. L'appareil comporte une filière plate (1) et un cylindre refroidisseur (6) pourvu d'un système interne de refroidissement. Un dispositif à lame liquide (10) associé audit cylindre refroidisseur (6) a pour fonction de débiter une lame liquide (20) continue et essentiellement uniforme à des vitesse et température prédéterminées. Ledit dispositif à lame liquide (10) présente une fente (19) caractérisée par une section (21) débitrice réglable, son alimentation en liquide respectant une température et un débit prédéterminés.
Cavaglia' Giuliano
Colnaghi Renato Angelo
Novelli Daniele
Cryovac Inc.
Smart & Biggar
LandOfFree
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