Lightweight bottles and method for making same

Details Lightweight bottles and method for making same Lightweight bottles and method for making same

1998-04-17

2000-05-09

Acquah, Samuel A.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

264239, 264299, 264259, 264291, 264464, 264479, 264DIG4, 264DIG64, 428 357, 428 3692, 528298, 528302, 528308, 5283086, B29D 2200, C08G 6316, B27N 308

Patent

active

06060140&

ABSTRACT:
The present invention discloses a process comprising forming a preform with planar stretch ratios greater than about 14 from a polyester having a natural stretch ratio which is substantially matched to the preform planar stretch ratio at processing conditions; and stretch blow molding said preform to produce a container. Suitable natural stretch ratios include those greater than about 13 at 210.degree. F. The desired natural stretch ratios and desirable final container properties are achieved by balancing the appropriate I.V. and copolymer modification.

REFERENCES:
patent: 4496064 (1985-01-01), Beck et al.
patent: 4579936 (1986-04-01), O'Neill
patent: 5281387 (1994-01-01), Collette et al.
patent: 5520877 (1996-05-01), Collette et al.

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