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US 4,784,597 AGranted
Apparatus for producing blown film
AssigneeSuper Bag Company, Ltd.
InventorSaburo Akane
Life of this patent
Estimating the term…
Abstract
A bubbler stabilizer for a blown film extrusion apparatus has a shaft mounted on an extrusion die of the apparatus, a pair of supporting members mounted on the shaft and spaced a predetermined distance from each other, and a plurality of lengths of coil spring extending between the peripheral portions of the supporting members with the lengths being spaced peripherally at intervals of a predetermined size around the supporting members. The coil spring lengths extend in a skew position relative to the axis of the shaft.
Claims13
A bubble stabilizer for a blown film extrusion apparatus, comprising:
- a shaft adapted to be mounted on an extrusion die of the apparatus;
- a pair of supporting members mounted on said shaft and spaced a predetermined distance from each other;
- and
- a filament means constituted by a plurality of lengths of coil spring extending between the peripheral portions of said supporting members, the lengths being spaced peripherally at intervals of a predetermined size around said supporting members, said coil spring lengths extending in a skew position relative to the axis of said shaft.
1 more element
Dependencies are inferred from the claim text.