Bi-axially oriented, thin-walled, synthetic plastic container/ar

Details Bi-axially oriented, thin-walled, synthetic plastic container/ar Bi-axially oriented, thin-walled, synthetic plastic container/ar

1983-09-15

1986-02-25

Kittle, John

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

220 4B, 215 1C, B65D 2300

Patent

active

045728518

ABSTRACT:
A method of, and apparatus for, forming thin-walled synthetic plastic containers and like articles wherein areas are stretched out of the plane of heated thermoplastic material a portion of the axial length of the containers or articles to be formed to form top and bottom preforms, each with an open and a closed end; each preform, while still in the webs, is further axially and radially stretched, at a temperature conducive to orientation of the molecular and crystalline structure of the material, to a greater length still less than the axial length of the container or article to be formed; the preforms are severed from the webs to provide open ended top and bottom sections; and the open ends of pairs of top and bottom preforms are assembled and welded together to form the containers or articles.

REFERENCES:
patent: Re29448 (1977-10-01), Brown et al.
patent: 3142422 (1964-07-01), Mojonnier
patent: 3275179 (1966-09-01), Lux et al.
patent: 3292811 (1966-12-01), Lynch
patent: 3302813 (1967-02-01), Schaich
patent: 3499068 (1970-03-01), Brown
patent: 3737494 (1973-06-01), Wolf
patent: 3814784 (1974-06-01), Wolf
patent: 4224275 (1980-09-01), Sauer

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