Procedure and relevant mechanical apparatus to obtain the foldin

Details Procedure and relevant mechanical apparatus to obtain the foldin Procedure and relevant mechanical apparatus to obtain the foldin

1985-01-08

1986-09-23

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

19880312, 425392, 493463, B29C 5330

Patent

active

046134743

ABSTRACT:
Method and apparatus for grooving a plastic drinking straw in which a straw is moved to an axially movable, rotatable, circumferentially grooved, pointed mandrel or pin then opposed grooved bars mating with grooves of the pin are pressed against the straw and moved in opposite directions lengthwise of the grooves of the bars.

REFERENCES:
patent: 1455433 (1923-05-01), Ellrich
patent: 2631645 (1953-03-01), Friedman
patent: 2985077 (1961-05-01), Strahammer et al.
patent: 3012604 (1961-12-01), Zieg
patent: 3021245 (1962-02-01), Roberts et al.
patent: 3242828 (1966-03-01), Larkin
patent: 3339004 (1967-08-01), Nardone
patent: 3751541 (1973-08-01), Hegler
patent: 3949045 (1976-04-01), Hess et al.
patent: 4088226 (1978-05-01), Vicek et al.

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