Bottles and jars – End wall structure – One-piece side and end wall
Patent
1995-11-02
1999-06-22
Weaver, Sue A.
Bottles and jars
End wall structure
One-piece side and end wall
215373, 220606, B65D 102, B65D 2300
Patent
active
059134380
ABSTRACT:
The invention provides a light weight self-standing blow molded two liter carbonated beverage bottle having a unique petaloid base made from a monobase preform. The base comprises a petaloid design which has a plurality of at least three (preferably five) feet. The monobase preform has a thick reinforcing ring forming portion which remains unstretched during blowing. The reinforcing ring forming portion is thicker than both the sidewall forming portion and the gate area forming portion of the preform thereby resulting in increased stretching in both those areas. The reinforcing ring extends circumferentially around the base. By providing such a reinforcing ring, a bottle having a bigger foot radius and/or containing less material use can be realized. The resulting bottle has less stress whitening and greater stress crack resistance while at the same time using less material and/or having a larger radius than prior bottles.
REFERENCES:
patent: 4024975 (1977-05-01), Uhlig
patent: 4780257 (1988-10-01), Beck
patent: 4785948 (1988-11-01), Strassheimer
patent: 4889752 (1989-12-01), Beck
patent: 4892205 (1990-01-01), Powers et al.
patent: 4927679 (1990-05-01), Beck
patent: 4981736 (1991-01-01), Feddersen et al.
patent: 5072841 (1991-12-01), Okhai
Beck Martin H.
Caldicott Robert
Connor Dennis C.
Hickey Scott J.
Muszynski John H
DTL Monofoot Limited Partnership
Weaver Sue A.
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