Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1994-05-26
1995-10-03
Nold, Charles R.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 3692, 4285428, B29B 1100
Patent
active
054550882
ABSTRACT:
A plastic bottle having a neck portion defining an opening, a generally tubular bottle body portion depending from the neck portion, and an integral bottle bottom structure closing a lowermost end of the bottle body portion including a continuous standing ring circumscribing a central push-up region is blow molded from a preform which includes a generally tubular preform body portion having an outside wall face and an inside wall face and an integral preform bottom structure closing a lowermost end of the preform. The preform body includes a cylindrical thickened portion which upon blowing forms said continuous standing ring. The central push-up region of the plastic bottle is formed from that portion of the preform below the cylindrical thickened portion. The portion of the preform below the cylindrical thickened portion includes features contributing to enhanced bottle bottom strength while minimizing the amount of resin employed in the structure.
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Constar Plastics Inc.
Nold Charles R.
Reynolds Locke
LandOfFree
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