초록 ▼

In extrusion apparatus for producing a continuous film of thermoplastic material, either as part of an extrusion coating or laminating process or to cast a continuous film, a chill roll which receives the film directly from the extruder is mounted on a wheeled carriage whereon it can be moved length

In extrusion apparatus for producing a continuous film of thermoplastic material, either as part of an extrusion coating or laminating process or to cast a continuous film, a chill roll which receives the film directly from the extruder is mounted on a wheeled carriage whereon it can be moved lengthwise into and out of operating relation with the other components of the apparatus without requiring lifting thereof or of other parts of the apparatus. The carriage may be proportioned to move directly between the apparatus in which it is to be used and the floor of the mill, or it may be mounted on a separate wheeled cart on which it is transported to and from the extrusion apparatus. Particularly in the latter case, provision is made for both vertical and lateral adjustment of the base structure on which the carriage is supported in its operating relation with the extruder.

대표청구항 ▼

In extrusion apparatus for producing a continuous film of thermoplastic material which includes a main frame, a chill roll having hollow journals at each end thereof, drive means for said chill roll including a drive member on said frame and a complementary drive member on one of said journals, mean

In extrusion apparatus for producing a continuous film of thermoplastic material which includes a main frame, a chill roll having hollow journals at each end thereof, drive means for said chill roll including a drive member on said frame and a complementary drive member on one of said journals, means for coupling said journals to a system for circulating liquid coolant through said chill roll, and means for extruding a film of thermoplastic material onto and into wrapping engagement with said chill roll, the combination of: (a) a movable base for said chill roll which is separate from said frame and includes bearing means for directly supporting said chill roll journals, (b) means defining an operating position of said chill roll with respect to said extruding means, (c) means supporting said base for rolling movement lengthwise of said chill roll into and out of said operating position to expedite removal and replacement of said chill roll without requiring lifting thereof, (d) means effective with said chill roll in said operating position thereof for connecting said drive members, and (e) releasable means for securing said movable base in fixed relation with said frame.