IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0259487
(2008-10-28)
|
등록번호 |
US-8177119
(2012-05-15)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Dixie Consumer Products LLC
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
22 |
초록
▼
A disposable servingware container 10 press-formed from a generally planar paperboard blank has a characteristic diameter, D, and includes a bottom panel 12 having an arched central crown 14 with a convex upper surface 14a, a first annular transition portion 16 extending upwardly and outwardly from
A disposable servingware container 10 press-formed from a generally planar paperboard blank has a characteristic diameter, D, and includes a bottom panel 12 having an arched central crown 14 with a convex upper surface 14a, a first annular transition portion 16 extending upwardly and outwardly from the bottom panel, with the proviso that a portion of the arched central crown defines a substantially continuous, convex arched profile 18 spanning at least 75% of the horizontal distance between center 20 of the container and the first annular transition. An optional sidewall portion 26 extends upwardly and outwardly from the first annular transition portion, while a second annular transition portion 28 flares outwardly with respect to the first annular transition portion defining a second radius of curvature, R2. The ratio of R2/D is 0.0125 or less. An outer flange portion 32 extends outwardly with respect to the second annular transition portion and forms the outer perimeter of the container.
대표청구항
▼
1. A disposable servingware container press-formed from a generally planar paperboard blank, the container having an outermost diameter, D, and comprising: (a) a bottom panel having an arched central crown with a convex upper surface;(b) a first annular transition portion extending upwardly and outw
1. A disposable servingware container press-formed from a generally planar paperboard blank, the container having an outermost diameter, D, and comprising: (a) a bottom panel having an arched central crown with a convex upper surface;(b) a first annular transition portion extending upwardly and outwardly from the bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(c) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(d) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(e) an outer flange portion extending outwardly with respect to the second annular transition portion. 2. The container according to claim 1, wherein the convex, arched profile extends outwardly from the center of the container toward the first annular transition for a distance of at least 80% of the horizontal distance between the center of the container and the first annular transition portion. 3. The container according to claim 1, wherein the convex, arched profile extends outwardly from the center of the container toward the first annular transition for a distance of at least 85% of the horizontal distance between the center of the container and the first annular transition portion. 4. The container according to claim 1, wherein the convex, arched profile extends outwardly from the center of the container toward the first annular transition for a distance of at least 90% of the horizontal distance between the center of the container and the first annular transition portion. 5. The container according to claim 1, wherein the convex, arched profile extends across the center of the container. 6. The container according to claim 5, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from 1.75 to about 14. 7. The container according to claim 6, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 12. 8. The container according to claim 6, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 6. 9. The container according to claim 6, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 4. 10. The container according to claim 1, wherein the upwardly convex arched central crown has a crown height of from about 0.05″ to about 0.40″. 11. The container according to claim 1, wherein the upwardly convex arched central crown has a crown height of at least about 0.1″. 12. The container according to claim 1, wherein the upwardly convex arched central crown has a crown height of at least about 0.15″. 13. The container according to claim 1, wherein the upwardly convex arched central crown has a crown height of at least about 0.2″. 14. The container according to claim 1, wherein the ratio R2/D is from about 0.0025 to 0.0125. 15. The container according to claim 1, wherein the ratio R2/D is from about 0.005 to 0.010. 16. The container according to claim 1, wherein R2 is less than 125 mils. 17. The container according to claim 1, wherein R2 is at least 25 mils and less than 125 mils. 18. The container according to claim 1, wherein R2 is less than 90 mils. 19. The container according to claim 1, wherein R2 is less than 60 mils. 20. The container according to claim 1, wherein R2 is less than 30 mils. 21. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized SSI rigidity of at least 1.8 g/lb basis weight. 22. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized SSI rigidity of at least 2.0 g/lb basis weight. 23. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized SSI rigidity of at least 2.25 g/lb basis weight. 24. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized SSI rigidity of from 1.8 g/lb basis weight up to about 3 g/lb basis weight. 25. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized FPI rigidity of at least 1.5 g/lb basis weight. 26. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized FPI rigidity of at least 1.7 g/lb basis weight. 27. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized FPI rigidity of at least 1.9 g/lb basis weight. 28. The container according to claim 1, in the form of a paper plate with an outermost diameter, D, of from about 8½″ to about 10½″, having a Normalized FPI rigidity of from 1.5 g/lb basis weight up to about 2.55 g/lb basis weight. 29. The container according to claim 1, further comprising a basis weight of from about 80 lbs/3000 ft2 to about 300 lbs/3000 ft2. 30. The container according to claim 1, further comprising a basis weight of from about 155 lbs/3000 ft2 to about 245 lbs/3000 ft2. 31. The container according to claim 1, wherein the container exhibits an SSI rigidity at least 15% greater than a like container with a generally planar bottom panel and an R2/D ratio of 0.020 or greater. 32. The container according to claim 1, wherein the container exhibits an SSI rigidity at least 30% greater than a like container with a generally planar bottom panel and an R2/D ratio of 0.020 or greater. 33. The container according to claim 1, wherein the container exhibits an SSI rigidity at least 45% greater than a like container with a generally planar bottom panel and an R2/D ratio of 0.020 or greater. 34. A disposable servingware container press-formed from a generally planar paperboard blank, the container having an outermost diameter, D, as well as an overall height and comprising: (a) a bottom panel having an arched central crown with a convex upper surface;(b) a first annular transition portion extending upwardly and outwardly from the generally planar bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(c) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(d) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(e) an outer flange portion extending outwardly with respect to the second annular transition portion, the outer flange portion having: (i) a downwardly sloping brim portion defining a declivity angle α at its terminus with respect to a horizontal substantially parallel to the bottom portion and wherein the downwardly sloping brim portion transitions to(ii) a brim transition portion, a brim height being thereby defined as the difference between the overall height of the container and a height at which the downwardly sloping brim portion transitions to the brim transition portion, which brim transition portion, in turn, transitions to(iii) an annular evert portion extending outwardly with respect to the downwardly sloping brim portion at an eversion angle β of at least about 25 degrees;(iv) the height of any upward extension of the evert portion above the brim transition portion being no more than about 75% of the brim height. 35. A disposable food container configured for rigidity and rim stiffness having an outermost diameter, D, comprising: (a) a bottom panel having an arched central crown with a convex upper surface;(b) a first annular transition portion extending upwardly and outwardly from said generally planar bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(c) a sidewall portion extending upwardly and outwardly from said first annular transition portion;(d) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less;(e) said sidewall portion defining a generally linear, inclined sidewall profile over a length between said first annular transition portion and said second annular transition portion having an angle of inclination with respect to the vertical from said generally planar bottom portion;(f) an arcuate outer flange portion having a convex upper surface extending outwardly with respect to said second annular transition portion, the radius of curvature of said arcuate outer flange portion being between about 0.0175 and about 0.1 times the outermost diameter of said disposable food container; and(g) an inner flange portion extending between said second annular transition portion and said arcuate outer flange portion having a ratio of a radial span to the outermost diameter of from about 0 to about 0.1, said disposable food container being further characterized by a flange outer vertical drop wherein the ratio of the length of the flange outer vertical drop to the outermost diameter of the container is greater than about 0.01. 36. The disposable food container according to claim 35, wherein said inclined sidewall profile has an angle of inclination with respect to the vertical from said generally planar bottom portion of from about 10° to about 50°. 37. A disposable servingware container press-formed from a generally planar paperboard blank, the container having an outermost diameter, D, and comprising: a bottom panel having a convex upper surface in at least a portion thereof;a first annular transition portion extending upwardly and outwardly from the bottom panel, wherein the convex upper surface spans at least 75% of the horizontal distance between the center of the container and the first annular transition portion;a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; andan outer flange portion extending outwardly with respect to the second annular transition portion. 38. The container according to claim 37, wherein the convex upper surface defines a radius of curvature, R0, and the ratio of R0/D is from about 1.75 to about 14. 39. The container according to claim 37, wherein the convex upper surface defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 12. 40. The container according to claim 37, wherein the convex upper surface defines a radius of curvature, R0, and the ratio of R0/D is from at least 2 to about 6. 41. The container according to claim 37, wherein the convex upper surface extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 4. 42. The container according to claim 37, in the form of a plate. 43. The container according to claim 37, in the form of a bowl. 44. The container according to claim 37, in the form of an oval platter. 45. The container according to claim 37, wherein the container exhibits an SSI rigidity at least 10% greater than a like container with a generally planar bottom panel. 46. The container according to claim 37, wherein the container exhibits an SSI rigidity at least 20% greater than a like container with a generally planar bottom panel. 47. The container according to claim 37, wherein the container exhibits an SSI rigidity at least 30% greater than a like container with a generally planar bottom panel. 48. The container according to claim 37, wherein the convex upper surface extends from the center of the container toward the first annular transition for a distance of at least 80% of the horizontal distance between the center of the container and the first annular transition portion. 49. The container according to claim 37, wherein the convex upper surface extends from the center of the container toward the first annular transition for a distance of at least 85% of the horizontal distance between the center of the container and the first annular transition portion. 50. The container according to claim 37, wherein the convex upper surface extends from the center of the container toward the first annular transition for a distance of at least 90% of the horizontal distance between the center of the container and the first annular transition portion. 51. A disposable paper plate press-formed from a generally planar paperboard blank, the plate having an outermost diameter, D of from about 8½″ to about 10½″, and comprising: (a) a bottom panel;(b) a first annular transition portion extending upwardly and outwardly from the bottom panel;(c) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(d) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(e) an outer flange portion extending outwardly with respect to the second annular transition portion;(f) a plurality of circumferentially spaced, radially extending pleats formed from a plurality of paperboard lamellae rebonded into substantially integrated fibrous structures generally inseparable into their constituent lamellae, the pleats extending over at least a portion of the second annular transition portion and at least a portion of the outer flange portion of the plate,wherein the paper plate defines a pleated structure having a profile, and wherein further the profile and the paperboard blank are selected and formation of the plate, including pleating, is controlled such that the paper plate exhibits a Normalized SSI rigidity of at least 1.8 g/lb basis weight. 52. The paper plate according to claim 51, wherein the ratio R2/D is from about 0.0025 to 0.0125. 53. The paper plate according to claim 51, wherein the ratio R2/D is from about 0.005 to 0.010. 54. The paper plate according to claim 51, wherein the Normalized SSI rigidity is at least 2.0 g/lb basis weight. 55. The paper plate according to claim 51, wherein the Normalized SSI rigidity is at least 2.25 g/lb basis weight. 56. The paper plate according to claim 51, wherein the Normalized SSI rigidity is up to about 3 g/lb basis weight. 57. The paper plate according to claim 51, further comprising an outermost diameter, D, of from about 8½″ to about 10½″, and wherein a Normalized FPI rigidity is at least 1.5 g/lb basis weight. 58. The paper plate according to claim 51, further comprising an outermost diameter, D, of from about 8½″ to about 10½″, and wherein a Normalized FPI rigidity is at least 1.7 g/lb basis weight. 59. The paper plate according to claim 51, further comprising an outermost diameter, D, of from about 8½″ to about 10½″, and wherein a Normalized FPI rigidity is at least 1.9 g/lb basis weight. 60. The paper plate according to claim 51, further comprising an outermost diameter, D, of from about 8½″ to about 10½″, and wherein a Normalized FPI rigidity is of from 1.5 g/lb basis weight up to about 3 g/lb basis weight. 61. The paper plate according to claim 51, further comprising a basis weight of from about 80 lbs/3000 ft2 to about 300 lbs/3000 ft2. 62. The paper plate according to claim 51, further comprising a basis weight of from about 155 lbs/3000 ft2 to about 245 lbs/3000 ft2. 63. The paper plate according to claim 51, wherein the plate exhibits an SSI rigidity at least 10% greater than a like plate with an R2/D ratio of 0.020 or greater. 64. The paper plate according to claim 51, wherein the plate exhibits an SSI rigidity at least 20% greater than a like plate with an R2/D ratio of 0.020 or greater. 65. The paper plate according to claim 51, wherein the plate exhibits an SSI rigidity at least 30% greater than a like plate with an R2/D ratio of 0.020 or greater. 66. The paper plate according to claim 51, wherein the paper plate has from about 30 to about 75 radially extending pleats. 67. The paper plate according to claim 51, wherein the paper plate has from about 40 to about 60 radially extending pleats. 68. A disposable servingware container press-formed from a generally planar paperboard blank, the container having an outermost diameter, D, and comprising: (a) a bottom panel;(b) a first annular transition portion extending upwardly and outwardly from the bottom panel;(c) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(d) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, less than 125 mils; and(e) an outer flange portion extending outwardly with respect to the second annular transition portion. 69. The container according to claim 68, wherein R2 is at least 25 mils and less than 125 mils. 70. The container according to claim 68, wherein R2 is less than 100 mils. 71. The container according to claim 68, wherein R2 is less than 90 mils. 72. The container according to claim 68, wherein R2 is less than 80 mils. 73. The container according to claim 68, wherein R2 is less than 60 mils. 74. The container according to claim 68, wherein R2 is less than 30 mils. 75. The container according to claim 68, further comprising a plurality of scores extending inwardly from the outermost diameter, wherein lower edges of the scores are at a height of at least 100 mils above the bottom of the first annular transition portion. 76. The container according to claim 75, wherein the lower edges of the scores are at a height of at least 150 mils above the bottom of the first annular transition portion. 77. The container according to claim 75, wherein the lower edges of the scores are at a height of from 100 mils to 300 mils above the bottom of the first annular transition portion. 78. The container according to claim 75, wherein the lower edges of the scores are at a height of from 150 mils to 250 mils above the bottom of the first annular transition portion. 79. A disposable bowl press-formed from a generally planar paperboard blank, the bowl having an outermost diameter, D, and a height, H, and comprising: (a) a bottom panel having an arched central crown with a convex upper surface;(b) a first annular transition portion extending upwardly and outwardly from the bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(c) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(d) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(e) an outer flange portion extending outwardly with respect to the second annular transition portion, wherein the bowl has a height/diameter ratio, H/D, of from 0.15 to 0.3. 80. The bowl according to claim 79, wherein the convex, arched profile extends outwardly from the center of the container toward the first annular transition for a distance of at least 80% of the horizontal distance between the center of the container and the first annular transition portion. 81. The bowl according to claim 79, wherein the convex, arched profile extends outwardly from the center of the container toward the first annular transition for a distance of at least 85% of the horizontal distance between the center of the container and the first annular transition portion. 82. The bowl according to claim 79, wherein the convex, arched profile extends outwardly from the center of the container toward the first annular transition for a distance of at least 90% of the horizontal distance between the center of the container and the first annular transition portion. 83. The bowl according to claim 79, wherein the convex, arched profile extends across the center of the container. 84. The bowl according to claim 83, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from 1.75 to about 14. 85. The bowl according to claim 84, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 12. 86. The bowl according to claim 84, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 6. 87. The bowl according to claim 84, wherein the arched profile extends across the center of the container and defines a radius of curvature, R0, and the ratio of R0/D is from about 2 to about 4. 88. The bowl according to claim 79, wherein the upwardly convex arched central crown has a crown height of from about 0.02″ to about 0.40″. 89. The bowl according to claim 79, wherein the upwardly convex arched central crown has a crown height of at least about 0.03″. 90. The bowl according to claim 79, wherein the upwardly convex arched central crown has a crown height of at least about 0.04″. 91. The bowl according to claim 79, wherein the upwardly convex arched central crown has a crown height of at least about 0.05″. 92. The bowl according to claim 79, wherein the ratio R2/D is from about 0.004 to 0.0125. 93. The bowl according to claim 79, wherein the ratio R2/D is from about 0.005 to 0.0125. 94. The bowl according to claim 79, wherein R2 is less than 125 mils. 95. The bowl according to claim 79, wherein R2 is at least 25 mils and less than 125 mils. 96. The bowl according to claim 79, wherein R2 is less than 90 mils. 97. The bowl according to claim 79, wherein R2 is less than 60 mils. 98. The bowl according to claim 79, wherein R2 is less than 30 mils. 99. The bowl according to claim 79, having from 60 to 120 pleats. 100. A method of making a disposable servingware container comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and die mounted for reciprocal motion with respect to each other; and(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a container with an outermost diameter, D, including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from the bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(iii) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(v) an outer flange portion extending outwardly with respect to the second annular transition portion. 101. The method according to claim 100, wherein the paperboard blank is a scored paperboard blank. 102. The method according to claim 100, wherein the paperboard blank has a basis weight between 80 lbs/3000 ft2 and 300 lbs/3000 ft2. 103. The method according to claim 100, wherein the paperboard blank has a polymeric coating on one side thereof. 104. The method according to claim 100, further comprising moistening the paperboard blank prior to forming the blank into the container. 105. The method according to claim 100, wherein the paperboard blank is impregnated with starch. 106. The method according to claim 100, wherein the punch is a segmented punch and the die is a segmented die. 107. The method according to claim 100, wherein the forming surfaces of the punch and die are maintained at a temperature between about 250° F. and 400° F. 108. The method according to claim 100, operated at from 20 to 80 pressings per minute. 109. The method according to claim 100, operated at more than 30 pressings per minute. 110. The method according to claim 100, operated at more than 40 pressings per minute. 111. The method according to claim 100, operated at more than 50 pressings per minute. 112. The method according to claim 100, wherein the blank is formed into shape by contact with a directly heated part, the contact between the paperboard and the directly heated part extending over an arc length of the central crown of the container of more than 100 mils. 113. The method according to claim 100, wherein the blank is formed into shape by contact with a directly heated part, the contact between the paperboard and the directly heated part extending over an arc length of the central crown of the container of more than 200 mils. 114. The method according to claim 100, wherein the blank is formed into shape by contact with a directly heated part, the contact between the paperboard and the directly heated part extending over an arc length of the central crown of the container of from 100 mils to 600 mils. 115. A method of making a disposable servingware container comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and a die mounted for reciprocal motion with respect to each other;(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a container with an outermost diameter, D, as well as an overall height and including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from the generally planar bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(iii) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(v) an outer flange portion extending outwardly with respect to the second annular transition portion, the outer flange portion having: (A) a downwardly sloping brim portion defining a declivity angle α at its terminus with respect to a horizontal substantially parallel to the bottom portion and wherein the downwardly sloping brim portion transitions to(B) a brim transition portion, a brim height being thereby defined as the difference between the overall height of the container and a height at which the downwardly sloping brim portion transitions to the brim transition portion, which brim transition portion, in turn, transitions to(C) an annular evert portion extending outwardly with respect to the downwardly sloping brim portion at an eversion angle β of at least about 25 degrees;(D) the height of any upward extension of the evert portion above the brim transition portion being no more than about 75% of the brim height. 116. A method of making a disposable servingware container comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and a die mounted for reciprocal motion with respect to each other;(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a container with an outermost diameter, D, including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from said generally planar bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(iii) a sidewall portion extending upwardly and outwardly from said first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less;(v) said sidewall portion defining a generally linear, inclined sidewall profile over a length between said first annular transition portion and said second annular transition portion having an angle of inclination with respect to the vertical from said generally planar bottom portion;(vi) an arcuate outer flange portion having a convex upper surface extending outwardly with respect to said second annular transition portion, the radius of curvature of said arcuate outer flange portion being between about 0.0175 and about 0.1 times the outermost diameter of said disposable servingware container; and(vii) an inner flange portion extending between said second annular transition portion and said arcuate outer flange portion having a ratio of a radial span to the outermost diameter of from about 0 to about 0.1, said disposable servingware container being further characterized by a flange outer vertical drop wherein the ratio of the length of the flange outer vertical drop to the outermost diameter of the container is greater than about 0.01. 117. A method of making a disposable servingware container comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and a die mounted for reciprocal motion with respect to each other;(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a container with an outermost diameter, D, including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from the bottom panel, wherein a portion of the arched central crown is in the shape of a spheroidal cap defining a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(iii) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(v) an outer flange portion extending outwardly with respect to the second annular transition portion. 118. The method according to claim 117, wherein the blank is formed into shape by contact with a directly heated part, the contact between the paperboard and the directly heated part extending over an arc length of the central crown of the container of more than 100 mils. 119. The method according to claim 117, wherein the blank is formed into shape by contact with a directly heated part, the contact between the paperboard and the directly heated part extending over an arc length of the central crown of the container of more than 200 mils. 120. The method according to claim 117, wherein the blank is formed into shape by contact with a directly heated part, the contact between the paperboard and the directly heated part extending over an arc length of the central crown of the container of from 100 mils to 600 mils. 121. A method of making a disposable servingware paper plate comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and a die mounted for reciprocal motion with respect to each other;(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a paper plate with an outermost diameter, D of from about 8½″ to about 10½″, including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from the bottom panel;(iii) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(v) an outer flange portion extending outwardly with respect to the second annular transition portion;(vi) a plurality of circumferentially spaced, radially extending pleats formed from a plurality of paperboard lamellae rebonded into substantially integrated fibrous structures generally inseparable into their constituent lamellae, the pleats extending over at least a portion of the second annular transition portion and at least a portion of the outer flange portion of the container, wherein the plate defines a pleated structure having a profile, and wherein further the profile and the paperboard blank are selected and formation of the plate, including pleating, is controlled such that the paper plate exhibits a Normalized SSI rigidity of at least 1.8 g/lb basis weight. 122. A method of making a disposable servingware container comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and a die mounted for reciprocal motion with respect to each other;(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a container with an outermost diameter, D, including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from the bottom panel;(iii) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, of less than 125 mils; and(v) an outer flange portion extending outwardly with respect to the second annular transition portion. 123. The method according to claim 122, wherein R2 is at least 25 mils and less than 125 mils. 124. The method according to claim 122, wherein R2 is less than 100 mils. 125. The method according to claim 122, wherein R2 is less than 90 mils. 126. The method according to claim 122, wherein R2 is less than 80 mils. 127. The method according to claim 122, wherein R2 is less than 60 mils. 128. The method according to claim 122, wherein R2 is less than 30 mils. 129. A method of making a disposable bowl comprising: (a) disposing a generally planar paperboard blank in a forming apparatus, which apparatus includes a punch and die mounted for reciprocal motion with respect to each other; and(b) forming the generally planar paperboard blank under heat and pressure between the punch and die into a bowl with an outermost diameter, D, and a height, H, including: (i) a bottom panel having an arched central crown with a convex upper surface;(ii) a first annular transition portion extending upwardly and outwardly from the bottom panel, wherein a portion of the arched central crown defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the container and the first annular transition portion;(iii) an optional sidewall portion extending upwardly and outwardly from the first annular transition portion;(iv) a second annular transition portion flaring outwardly with respect to the first annular transition portion defining a second radius of curvature, R2, the ratio of R2/D being 0.0125 or less; and(v) an outer flange portion extending outwardly with respect to the second annular transition portion, wherein the bowl has a height/diameter ratio, H/D, of from 0.15 to 0.3.
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