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    • 19. 发明授权
    • Forming of pressed trays
    • 压制纸的成型
    • US5230939A
    • 1993-07-27
    • US577118
    • 1990-09-04
    • Gary A. Baum
    • Gary A. Baum
    • A47G19/03B31B50/59B65D1/34B65D3/02
    • A47G19/03B65D1/34Y10S493/968Y10T428/1303Y10T428/219Y10T428/24455Y10T428/24471Y10T428/24479Y10T428/24488Y10T428/2457Y10T428/24777Y10T428/31993
    • A product press formed from a paperboard and a method for forming the same is provided, wherein the product includes a press formed three-dimensional curvilinear region having a desired shape and containing a formation improvement structure for facilitating the press formation and maintenance of the desired product shape and for preventing the machine directionality of the paperboard from distorting the product from its desired shape. The press formed paperboard product of the preferred embodiment comprises a planar wall having a periphery which is at least partially curvilinear and a peripheral wall angularly oriented with respect to the planar wall. The peripheral wall extends along at least a portion of the curvilinear periphery of the planar wall and the closest portion of the peripheral wall is spaced a substantial radial distance from the periphery of the planar wall. The press formed three-dimensional curvilinear region extends radially outwardly from the curvilinear periphery of the planar wall while simultaneously curving out of the plane defined by the planar wall. The formation improvement structure includes a peripherally extending crush score line having a substantial directional component extending generally parallel to the curvilinear portion of the periphery of the planar wall. The crush score lines may be circular, sinusoidal or saw tooth shaped.
    • 提供了一种由纸板形成的产品压力机及其形成方法,其中产品包括压制成型的具有所需形状的三维曲线区域并且包含用于促进所需产品的压制成型和维护的地层改进结构 形状并且用于防止纸板的机器方向性使产品从其期望的形状变形。 优选实施例的压制成型纸板产品包括具有至少部分曲线的周边的平面壁和相对于平面壁成角度定向的周壁。 周壁沿着平面壁的曲线周边的至少一部分延伸,并且周壁的最近部分与平面壁的周边间隔开大的径向距离。 压制成型的三维曲线区域从平面壁的曲线周边径向向外延伸,同时从平面壁限定的平面弯曲。 形成改进结构包括外围延伸的压痕刻痕线,其具有大致平行于平面壁的周边的曲线部分延伸的基本方向分量。 粉碎刻痕线可以是圆形,正弦曲线或锯齿形。
    • 20. 发明授权
    • Fibrous paper cover stock with textured surface pattern and method of
manufacturing the same
    • 具有纹理表面图案的纤维纸盖料及其制造方法
    • US5223092A
    • 1993-06-29
    • US693030
    • 1991-04-30
    • Gary C. GrinnellBernard G. KlowakMichael P. Bouchette
    • Gary C. GrinnellBernard G. KlowakMichael P. Bouchette
    • D21F11/00D21H25/00
    • D21F11/006D21H25/005
    • A sheet of fibrous web material having one textile-like surface and an opposite substantially smooth surface, a grain depth memory factor greater than 80, an apparent density in the range of about 4 to about 7 pound ream/caliper point in mils, a caliper (at a basis weight between about 50 and about 75 pounds/3000 square feet) greater than 0.008 inch, and a machine-direction sheet stretch of at least 5%. The invention includes a method of manufacturing the sheet comprising partially dewatering a wet fibrous web to about 30% to about 60% solids, conveying the web to a compression nip defined by a smooth-surfaced roll and a textured-surfaced fabric material, moving the fabric material at a speed of about 15% to about 35% less than the surface speed of the smooth-surfaced roll, compressing the web in the nip with a compression force between about 5 pounds/linear inch and about 100 pounds/linear inch, with an average pressure of between about 20 pounds per square inch and about 400 pounds per square inch in the compression nip, subjecting the fabric material to a tension on opposite sides of the compression nip with the tension on the fabric material entering the nip being greater than the tension on the fabric material exiting the nip, and drying the web.
    • 具有一个织物状表面和相对的基本上平滑的表面的纤维网状材料片,大于80的晶粒深度记忆因子,约4至约7磅范围内的表观密度,密度(mil),卡尺 (约50至约75磅/ 3000平方英尺之间的基重)大于0.008英寸,机器方向片材伸长率至少为5%。 本发明包括制造片材的方法,其包括将湿纤维网部分地脱水至约30%至约60%的固体,将幅材输送到由光滑表面辊和纹理表面的织物材料限定的压缩间隙, 织物材料以比光滑表面辊的表面速度小约15%至约35%的速度,以约5磅/英寸至约100磅/英寸的压缩力在辊隙中压缩幅材, 在压缩压区中平均压力为约20磅/平方英寸和约400磅/平方英寸,使织物材料在压缩辊隙的相​​对侧上受到张力,进入辊隙的织物材料上的张力更大 比织物离开辊隙的张力和干燥纤维网。