Apparatus to form a flat-topped rim on a thin-walled foam plastic container
AssigneeOwens-Illinois, Inc.
InventorsThomas E. Doherty, William F. Herzog
Life of this patent
Estimating the term…
Abstract
Apparatus for forming the rim on a foam plastic container such as a cup by use of a segmented rim former. The cavity in the rim former is contoured so as to produce a curled rim that is flat on the top. The flat top of the rim is parallel to the bottom of the cup. The apparatus comprises a segmented rim former with a combination of linear and curved surfaces that form a noncircular container rim.
Claims9
An apparatus for forming a flat-topped rim on a thin-walled container comprising a die cavity of toroidal configuration formed of an internal die section to which is attached a plurality of external die segments, an ingress for the insertion of a container top edge into said die cavity, said cavity when viewed in cross section being defined by an incoming first linear section for the guidance of the container top edge, a first arcuate section connected to said first linear section, a second linear section connected to said first arcuate section, a second arcuate section connected to said second linear section, a third linear section connected to said second arcuate section and a third arcuate section connected to said third linear section.
Dependencies are inferred from the claim text.