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US 7,114,942 B2Granted
Apparatus for producing synthetic resin film
AssigneeReifenhauser GmbH & Co. Maschinenfabrik
InventorHelmut Meyer
Life of this patent
Estimating the term…
Abstract
A calibrating basket for a film blowing tube is provided with roller bearings to prevent stripe formation on the film and pinching of the film between the rollers.
Claims6
An apparatus for controlling the size of a blown extruded thermoplastic synthetic resin film tube, the apparatus comprising:
- a calibrating basket through which the blown extruded thermoplastic synthetic resin film tube passes and formed by an array of guide stirrups;
- and a respective row of tube-contacting film-guide rollers disposed along each of the stirrups;
- and a respective row of tube-contacting film-guide rollers disposed along each of the stirrups and each including an inner ring fixed to the respective stirrup, an outer ring coaxially surrounding the inner ring, an array of roller bodies supporting the outer ring rotatably on the inner ring, and a respective cage between the rings holding the roller bodies, the outer rings having outer surfaces engaging the tube.
An apparatus for controlling the size of a blown extruded thermoplastic synthetic resin film tube, the apparatus comprising:
- a calibrating basket through which the blown extruded thermoplastic synthetic resin film tube passes and formed by an array of guide stirrups;
- and
- a respective row of tube-contacting film-guide rollers disposed along each of the stirrups and each including
- an inner ring fixed to the respective stirrup,
- an outer ring coaxially surrounding the inner ring, and
- an array of roller bodies supporting the outer ring rotatably on the inner ring, the outer rings having outer surfaces engaging the tube.
3 more elements
Dependencies are inferred from the claim text.