Blow molded plastic container having a reinforced wall structure and preform therefor
OwnerHerbert Strassheimerinventor
Life of this patent
Estimating the term…
Abstract
A plastic preform for forming blow molded plastic containers and plastic containers wherein the container has a tubular body portion adjacent a bottom portion and extending onto said bottom portion having circumferentially spaced, radially extending, continuous alterations in wall thickness. In one embodiment the container also includes at least one continuous, thickened portion at discrete locations on at least one of the inside and outside wall face adjacent the bottom structure extending completely circumferentially around the periphery thereof.
Claims19
A plastic preform for forming blow molded plastic bottles which comprises:
- a neck portion defining an opening;
- a tubular body portion depending therefrom;
- and an integral bottom structure depending from the tubular body portion;
- said preform having an outside wall face and an inside wall face, with at least one of the inside wall face and the outside wall face of the tubular body portion adjacent the bottom structure and extending onto said bottom structure having a plurality of flat faces capable of forming a blow molded plastic bottle with a bottom portion having circumferentially spaced radially extending continuous alterations in wall thickness with a regularly undulating cross-section across the circumference thereof, wherein said alterations in wall thickness are progressive and gradual.
A plastic preform for forming blow molded plastic bottles which comprises:
- a neck portion defining an opening;
- a tubular body portion depending therefrom;
- and an integral bottom structure depending from the tubular body portion;
- said preform having an outside wall face and an inside wall face, with at least one of the inside wall face and the outside wall face of the tubular body portion adjacent the bottom structure and extending into said bottom structure having a plurality of flat faces, including at least one continuous, thickened portion in discrete locations on the outside wall face adjacent the bottom structure extending completely around the circumference of said outside wall face.
A blow molded plastic container comprising:
- a neck portion defining an opening;
- a bottom portion;
- a tubular body portion interconnecting said neck and bottom portions, said bottom portion having an internal, axially inwardly directed conical part;
- said container having an inside wall face and an outside wall, with the inside wall face of said tubular body portion adjacent having circumferentially spaced, radially extending, continuous alterations in wall thickness with a regularly undulating cross-section across the entire circumference of the inside wall face wherein said alterations in wall thickness are progressive and gradual.
A blow molded plastic container comprising:
- a neck portion defining an opening;
- a bottom portion;
- a tubular body portion interconnecting said neck and bottom portions, said bottom portion having an internal, axially inwardly directed conical part;
- said container having an inside wall face and an outside wall, with the inside wall face of said tubular body portion adjacent said bottom portion and extending onto said bottom portion having circumferentially spaced, radially extending, continuous alterations in wall thickness with a regularly undulating cross-section across the entire circumference of the inside wall face wherein said alterations in wall thickness are progressive and gradual, including at least one continuous, thickened portion at discrete locations on at least one of the inside and outside wall face adjacent the bottom portion extending completely circumferentially around the periphery thereof.
A container according to claim 26 wherein said at least one discrete thickened portion is located on the inside wall face.
Dependencies are inferred from the claim text.