Methods of making bi-axially oriented, thin-walled, synthetic pl

Details Methods of making bi-axially oriented, thin-walled, synthetic pl Methods of making bi-axially oriented, thin-walled, synthetic pl

1980-09-24

1984-08-21

Silbaugh, Jan

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156292, 264 68, 264531, 264532, 264545, 264551, B29C 2708, B29C 1704, B32B 110

Patent

active

044668457

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: 3184524 (1965-05-01), Whiteford
patent: 3499068 (1970-03-01), Brown
patent: 3737494 (1973-06-01), Wolf
patent: 3814784 (1974-06-01), Wolf
patent: 3900120 (1975-08-01), Sincock
patent: 4224275 (1980-09-01), Sauer

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