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    • 6. 发明授权
    • Rigid paperboard container
    • 星际派对
    • EP0586206B1
    • 1998-07-22
    • EP93306831.4
    • 1993-08-27
    • FORT JAMES CORPORATION
    • Cheshire, James O.Garns, DennyLittlejohn, Mark B.Sandstrom, Erland R.
    • B65D1/34A47G19/03
    • A47G19/03B65D1/34Y02A40/961Y02W90/11
    • A container formed from a unitary paperboard blank having a substantially planar inner region, a sidewall region and a rim region formed about the periphery thereof is disclosed. The sidewall region includes a generally annular region flaring upwardly and outwardly from a periphery of the planar inner region and a first frusto-conical region adjoining the annular region with the frusto-conical region sloping outwardly and upwardly from the annular region. The rim region includes an outwardly flaring arcuate annular region adjoining an outer periphery of the first frusto-conical region, and a second frusto-conical region extending substantially tangentially from the arcuate annular region. The second frusto-conical region extends outwardly and downwardly at an angle of about 6 DEG to about 12 DEG and preferably about 6 DEG -10.5 DEG relative to the plane defined by the planar inner region. The rim of the container may further include an outwardly and downwardly flaring frusto-conical lip adjoining an outer periphery of the second frusto-conical region in order to aid in grasping of the paperboard container by the consumer. Additionally, a plurality of radially extending mutually spaced pleats are also formed in the rim region and are internally bonded with portions of the rim region during formation of the paperboard container by a die press. During the fabrication of the paperboard material for forming the aforementioned container, the paperboard material is impregnated with a sizing adhesive equivalent to at least 6 pounds of starch per 3,000 ft ream of paperboard material such that the tensile strength of the board is increased, and such that during the press forming of the paperboard containers between respective dies, the pleats adhere to respective portions of the pleats and rim, thereby maintaining the integrity of the pleats during use of the container by the consumer by resisting the opening of the pleats.
    • 8. 发明公开
    • Rigid four radii rim paper plate
    • Steifer Pappteller mit einem vier Radien aufweisenden Rand。
    • EP0532233A1
    • 1993-03-17
    • EP92308024.6
    • 1992-09-04
    • JAMES RIVER CORPORATION OF VIRGINIA
    • Littlejohn, Mark B.
    • A47G19/03
    • A47G19/03
    • A pressed paper plate includes a planar center 12 which forms a bottom for the plate and has an outer peripheral surface 13. An outwardly projecting side wall 14 includes a first rim portion 14A which is convex upward and is joined to the outer peripheral surface of the planar center, and a second rim portion 14B which is convex downward and is joined to the first rim portion. A third rim portion 16A, which is joined to the second rim portion of the outwardly projecting side wall and a fourth rim portion 16B which is provided for forming an outer edge for the container, are both convex downward. The arc lengths and radii of the first, second, third and fourth rim portions are selected for enhancing rigidity of the pressed paper plate as compared to a conventional paperboard container made from the same paperboard stock.
    • 压制纸板包括形成板的底部并具有外周表面13的平面中心12.向外突出的侧壁14包括第一边缘部分14A,该第一边缘部分14A向上凸起并且与第二边缘部分14A的外周表面接合 平面中心和向下凸出并与第一边缘部分接合的第二边缘部分14B。 连接到向外突出的侧壁的第二边缘部分的第三边缘部分16A和用于形成用于容器的外边缘的第四边缘部分16B都向下凸出。 选择第一,第二,第三和第四边缘部分的弧长和半径,以便与由同一纸板坯料制成的常规纸板容器相比,增加了压纸纸的刚性。