DISPOSABLE SERVINGWARE CONTAINERS WITH FLANGE TABS
First Claim
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1. A method of press-forming a paperboard blank into a disposable servingware container comprising:
- (a) providing a generally planar paperboard blank which includes a central portion defining generally a perimeter thereof as well as at least a first and second peripheral tabs extending outwardly from the central portion beyond the perimeter of the central portion, the peripheral tabs being configured so as to define a first cross-tab dimension between their outer edges generally parallel to and of like extent with a corresponding transverse dimension across the paperboard blank perimeter;
(b) transferring said paperboard blank to a segmented die set while controlling its orientation utilizing said first and second peripheral tabs such that the paperboard blank is disposed in the segmented die set in a predetermined orientation with respect thereto;
(c) press-forming said paperboard blank into a disposable container having a generally planar bottom portion;
a first annular transition portion extending upwardly and outwardly from the generally planar bottom portion;
an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;
a second annular transition portion flaring outwardly with respect to the first annular transition portion;
an outer flange portion extending outwardly with respect to the second annular transition portion defining generally the container perimeter; and
at least first and second generally planar peripheral tabs corresponding to the tabs of the paperboard blank extending outwardly from the flange portion of the container generally beyond the container perimeter;
and wherein said die set includes a punch base member with a punch outer container contour portion, a punch knock-out mounted for reciprocating motion with respect to the punch base member and a pressure ring mounted for reciprocating motion with respect to the punch base member.
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Abstract
Disposable containers include peripheral tabs which are useful for positioning and processing the containers and operate as separators. In a preferred embodiment, the tabs correspond to tabs on a paperboard blank where the tabs are useful for controlling the orientation of the blanks so that printed and shape features may be kept in registration during manufacturing of a disposable servingware container.
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Citations
26 Claims
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1. A method of press-forming a paperboard blank into a disposable servingware container comprising:
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(a) providing a generally planar paperboard blank which includes a central portion defining generally a perimeter thereof as well as at least a first and second peripheral tabs extending outwardly from the central portion beyond the perimeter of the central portion, the peripheral tabs being configured so as to define a first cross-tab dimension between their outer edges generally parallel to and of like extent with a corresponding transverse dimension across the paperboard blank perimeter; (b) transferring said paperboard blank to a segmented die set while controlling its orientation utilizing said first and second peripheral tabs such that the paperboard blank is disposed in the segmented die set in a predetermined orientation with respect thereto; (c) press-forming said paperboard blank into a disposable container having a generally planar bottom portion;
a first annular transition portion extending upwardly and outwardly from the generally planar bottom portion;
an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;
a second annular transition portion flaring outwardly with respect to the first annular transition portion;
an outer flange portion extending outwardly with respect to the second annular transition portion defining generally the container perimeter; and
at least first and second generally planar peripheral tabs corresponding to the tabs of the paperboard blank extending outwardly from the flange portion of the container generally beyond the container perimeter;and wherein said die set includes a punch base member with a punch outer container contour portion, a punch knock-out mounted for reciprocating motion with respect to the punch base member and a pressure ring mounted for reciprocating motion with respect to the punch base member. - View Dependent Claims (2, 3)
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4. A method of making a disposable servingware container comprising:
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(a) preparing a paperboard blank with a circular perimeter of diameter, D′
, and first and second lobular tabs extending outwardly from the perimeter of diameter, D′
, of the paperboard blank;(b) press-forming the paperboard blank into a disposable container having a generally planar bottom portion, a first annular transition portion adjacent thereto, an optional sidewall portion, a second annular transition portion flaring outwardly with respect to the first annular transition portion and an outer flange extending outwardly from the second annular transition portion to define the container diameter, D, which is less than D′
, wherein the disposable container has a height to diameter ratio of greater than about 0.1;and wherein further the lobular tabs extend outwardly from the bowl perimeter of diameter, D, a distance of from about 0.02 to about 0.3 times the bowl diameter, D. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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13. The method according to claim 30, wherein said printed image comprises character attributes selected form the group consisting of eyes, ears, fins, arms, paws, hands, hair, legs or feet applied to said tabs.
Specification