Striped drinking straw and method of making the same

Details Striped drinking straw and method of making the same Striped drinking straw and method of making the same

2005-12-02

2009-06-23

Tucker, Philip C (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Means to form preform from bulk and means to convolute or...

Convoluting means includes an endless surface

C425S131100, C425S334000

Reexamination Certificate

active

07549854

ABSTRACT:
Extruded, striped drinking straws are formed by coextruding at least two polymers of different color through a common extruder to form an elongated tube. An oscillator consisting of a pair of rolls supported for rotation about their central axes, extending normally to the extension of the tube, bear against opposed sides of the tube and are reciprocated in opposing directions so as to rotate the tube by a gear and spline mechanism. A straight puller draws the tube out of the extruder and through the twisting oscillator and a cutter forms the tube into straw lengths at the output of the puller.

REFERENCES:
patent: 3234312 (1966-02-01), Thomas

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