Container with dripless spout and method of forming same

Details Container with dripless spout and method of forming same Container with dripless spout and method of forming same

1993-04-06

1994-07-19

Shaver, Kevin P.

Dispensing

Nozzles, spouts and pouring devices

Antidrip

222546, B65D 2306

Patent

active

053300831

ABSTRACT:
This relates to the provision of the pour spout portion of a blow molded plastic bottle with a dripless lip. In one form, the terminal end of the pour spout is internally reamed at an angle so as to terminate in an exterior sharp edge, after which the resultant tapered end portion of the pour spout is engaged by a rotating tool which frictionally heats the plastic engaged thereby and progressively turns over the sharp edge through an angle on the order of 180.degree. to provide the desired dripless lip. In another form, the pour spout portion of the container neck finish is provided with an integrally molded outwardly directed hollow rib which lies in a sloping plane. The rib extends only partially about the circumference of the pour spout. The pour spout is then trimmed at an angle to the axis of the pour spout and parallel to the plane of the rib so as to provide for a pour lip of limited circumferential extent and which pour lip, depending upon the plane of trimming may terminate in a sharp dripless lip. This latter container is provided with a special closure which includes a hollow plug portion and progressively engages in the trimmed pour spout and forms a seal therewith.

REFERENCES:
patent: 2601039 (1952-06-01), Livingstone
patent: 2763402 (1956-09-01), Livingstone
patent: 2975947 (1961-03-01), Pellet
patent: 3059816 (1962-10-01), Goldstein
patent: 3300104 (1967-01-01), Burt
patent: 3391838 (1968-07-01), Gundel
patent: 4133462 (1979-01-01), Lindstrom
patent: 4387819 (1983-06-01), Corsette
patent: 4591078 (1986-05-01), Weissman
patent: 4664295 (1987-05-01), Iida
patent: 5141138 (1992-08-01), Odet et al.

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