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    • 4. 发明授权
    • Method of drying a web
    • 干燥网的方法
    • US06977028B2
    • 2005-12-20
    • US10615308
    • 2003-07-08
    • Russell F. RossJark C. Lau
    • Russell F. RossJark C. Lau
    • D21F5/18D21F11/00
    • D21F5/044D21F5/182F26B13/16F26B21/10
    • A method of drying a paper web is provided. The method utilizes a dryer, such as a through-dryer, having a first dryer section and a second dryer section. Within the first dryer section, a relatively wet paper web is dried at an elevated temperature, such as between about 400° F. to about 500° F. After being dried by the first dryer section, the web is relatively dry and is further dried by the second dryer section at a reduced temperature, such as between about 300° F. to about 400° F. A variety of control techniques can also be utilized to control the temperature of each dryer section.
    • 提供了一种干燥纸幅的方法。 该方法使用具有第一干燥部分和第二干燥部分的干燥器,例如通过干燥器。 在第一干燥器部分内,相对湿的纸幅在升高的温度(例如约400°F至约500°F)之间干燥。在通过第一干燥部干燥之后,幅材相对干燥并进一步干燥 通过第二干燥部分在降低的温度,例如约300°F至约400°F之间。各种控制技术也可以用于控制每个干燥部分的温度。
    • 6. 发明授权
    • Die head assembly, apparatus, and process for meltblowing a fiberforming thermoplastic polymer
    • 熔模吹塑成型热塑性聚合物的模头组件,装置和方法
    • US06200120B1
    • 2001-03-13
    • US09001645
    • 1997-12-31
    • Jeffrey E. FishJark C. LauBryan D. Haynes
    • Jeffrey E. FishJark C. LauBryan D. Haynes
    • B29B722
    • D01D5/0985D01D4/025D04H1/56Y10T442/68
    • A die head assembly for meltblowing thermoplastic material comprising a first chamber for receiving a pressurized fluid, a second chamber for receiving a pressurized molten thermoplastic material, the second chamber defining an outlet through which the molten thermoplastic material exits the die head, and a fluid tube removably securable to the first chamber and defining a passageway having an inlet in communication with the first chamber and an outlet extending at least into the outlet of the second chamber. The die head assembly of claim 1, wherein the outlet of the second chamber defines a longitudinal axis, and the outlet of the second chamber and the outlet of the fluid tube define at least one elongated opening therebetween elongated in a direction extending substantially perpendicular to the longitudinal axis, the molten thermoplastic material passing through the elongated opening as it exits the die head.
    • 一种用于熔化热塑性材料的模头组件,包括用于接收加压流体的第一室,用于接收加压的熔融热塑性材料的第二室,所述第二室限定出熔融热塑性材料通过其离开模头的出口,以及流体管 可拆卸地固定到第一腔室并且限定具有与第一腔室连通的入口的通道和至少延伸到第二腔室的出口的出口。2.根据权利要求1所述的模头组件,其中所述第二腔室的出口限定 纵向轴线,并且第二腔室的出口和流体管道的出口限定至少一个细长的开口,其在基本上垂直于纵向轴线延伸的方向上延伸,熔融热塑性材料在其离开模具时通过细长开口 头。
    • 10. 发明授权
    • Extrusion process using a central air jet
    • 使用中央空气喷射的挤出过程
    • US4818464A
    • 1989-04-04
    • US872992
    • 1986-06-11
    • Jark C. Lau
    • Jark C. Lau
    • D01D4/02D04H1/56B65H54/00
    • D01D4/025D04H1/56
    • A thermoplastic material extrusion mechanism is provided which includes a die head having a centrally disposed high velocity gas delivery means adapted to continuously emit a jet of a gas having shear layers, at least one chamber for the thermoplastic material, thermoplastic material delivery means arranged at least partially surrounding the centrally disposed high velocity gas delivery means for directing extruded thermoplastic material emitted from the thermoplastic material delivery means toward the gas jet, causing the extruded thermoplastic material to be introduced into the shear layers of the gas jet, and a thermoplastic material conduit which communicates the at least one chamber with each of the thermoplastic material extrusion openings. A method of producing fibers of a thermoplastic material is also provided which comprises the steps of (a) forming a high velocity gas jet having shear layers, (b) extruding at least one stream of a molten thermoplastic material from at least one thermoplastic material delivery means arranged adjacent and at least partly surrounding the high velocity gas jet, and (c) merging the at least one thermoplastic material stream with the shear layers of the high velocity gas jet to attentuate the thermoplastic material into fibers, forming thereby fiber streams of the thermoplastic material.
    • 提供一种热塑性材料挤出机构,其包括具有中心设置的高速气体输送装置的模头,所述高速气体输送装置适于连续发射具有剪切层的气体的射流,至少一个用于热塑性材料的腔室,至少布置的热塑材料输送装置 部分地围绕中心布置的高速气体输送装置,用于将从热塑材料输送装置发射的挤压热塑性材料引向气体射流,使挤出的热塑性材料被引入气体射流的剪切层;以及热塑性材料导管, 将至少一个室与每个热塑性材料挤出开口连通。 还提供了一种生产热塑性材料的纤维的方法,其包括以下步骤:(a)形成具有剪切层的高速气体射流,(b)从至少一种热塑性材料输送 将所述至少一种热塑性材料流与所述高速气体射流的剪切层合并以将所述热塑性材料注入纤维中,由此形成纤维流 热塑性材料。