公开(公告)号：US4375448A

公开(公告)日：1983-03-01

申请号：US250546

申请日：1981-04-03

Applicant: David W. Appel ,  Raymond Chung

Inventor： David W. Appel ,  Raymond Chung

IPC: D01G99/00 ,  B29J5/00

CPC classification number: D01G99/00

Abstract: A method therefor for forming an air-laid web of dry fibers suitable for use in a wide variety of products ranging from bath and facial tissues to towels having basis weights on the order of 13 lbs./2880 ft..sup.2 to 50 lbs./2880 ft..sup.2 on a high-speed production basis, wherein the web is characterized by random array of individualized fibers substantially undamaged by mechanical action and having a controlled cross-directional profile, and by its freedom from nits, pills, rice and the like, thereby improving both the appearance and the tensile strength of the web. The full-width feeding of dry fibers to a 2-dimensional flow control and fiber screening system is described wherein substantially no cross-flow forces are created in the system, ensuring a uniform cross-directional basis weight profile. The fibers are subjected to only minimal mechanical disintegrating action at all stages of the process subsequent to hammermilling and, thus, shortening, curling and/or rolling of the fibers to aggregated fiber masses is minimized. The aggregated fiber masses which are present in the fiber stream fed to the system are centrifugally and tangentially separated from individualized fibers and soft fiber flocs and removed from the system while maintaining relatively low fiber separation and/or recycling on the order of less than 10%.

Abstract translation: 一种用于形成干燥纤维的气流成网幅材的方法，其适用于从浴和面巾纸到毛巾的各种产品，所述产品的基重为13磅/ 2880英尺2至50磅/平方米 2880 ft.2，其中纤维网的特征在于通过机械作用基本上不受损害并具有受控的横向轮廓的随机阵列的个性化纤维，并且通过其免于尼丝，丸，米等的特征 ，从而改善幅材的外观和拉伸强度。 描述了将干纤维全尺寸进料到二维流动控制和纤维筛选系统，其中在系统中基本上不产生交叉流动力，确保均匀的横向基重分布。 纤维在锤击之后的过程的所有阶段仅经受最小的机械崩解作用，因此使纤维缩短，卷曲和/或滚动至聚集的纤维块最小化。 存在于供给系统的纤维流中的聚集的纤维质量离心和切向地从单独的纤维和软质纤维絮凝物中分离，并从体系中除去，同时维持相对低的纤维分离和/或循环使用量小于10％ 。

公开(公告)号：US4252184A

公开(公告)日：1981-02-24

申请号：US128408

申请日：1980-03-10

Applicant: David W. Appel

Inventor： David W. Appel

IPC: B21G1/00 ,  B21F5/00 ,  B31F1/07 ,  D06C15/08 ,  D21F1/00 ,  D21F3/08 ,  D21F5/00 ,  D21G1/02 ,  F16C13/00 ,  F26B13/18 ,  F28D11/02 ,  F28F5/02

CPC classification number: B31F1/07 ,  D06C15/08 ,  D21G1/0266 ,  F16C13/00 ,  F26B13/183 ,  F28D11/02 ,  B31F2201/0723 ,  B31F2201/073 ,  B31F2201/0756 ,  B31F2201/0784 ,  Y10S165/16 ,  Y10S165/919

Abstract: A heated roll member especially adapted to provide a uniform temperature surface for embossing or calendering low basis weight cellulose or polymeric webs. The roll member comprises outer and inner shells with an annular chamber therebetween and apertures in the inner shell which introduce fluid into or remove fluid from the annular chamber. Specially constructed apertures, each provided with a flow diverting means, produce fully turbulent flow in a heated fluid moving axially within the annular chamber. A controlled level of turbulence in the fluid is initiated at the aperture and is maintained throughout the annular chamber, such that "hot" or "cold" areas do not develop on the surface of the outer shell.

Abstract translation: 特别适用于提供均匀的温度表面用于压制或压延低定量纤维素或聚合物网的加热辊构件。 辊构件包括在其间具有环形室的外壳和内壳，以及在内壳中的孔，其将流体引入或从环形腔排出流体。 每个具有流动分流装置的特殊构造的孔在环形室内轴向移动的加热流体中产生完全湍流。 流体中受控的湍流水平在孔口处开始，并且保持在整个环形室中，使得在外壳表面上不会形成“热”或“冷”区域。

公开(公告)号：US4405297A

公开(公告)日：1983-09-20

申请号：US373823

申请日：1982-05-03

Applicant: David W. Appel ,  Michael T. Morman

Inventor： David W. Appel ,  Michael T. Morman

IPC: D04H3/16 ,  D01D5/08

CPC classification number: D04H3/16

Abstract: An improved method and apparatus for forming nonwoven webs by spinning filaments into a quench chamber where they are contacted with a quenching fluid, then utilizing the quench fluid to draw the filaments through a two-dimensional nozzle spanning the full machine width, and collecting the filaments as a web on a porous surface. In contrast with the prior art, low motive fluid pressures can be used, and a non-eductive drawing means utilized to minimize air turbulence and the resulting filament entanglement in the drawing means while maintaining substantially constant cross machine filament distribution. The apparatus and process reduce problems relating to filament breakage and spreading and result in increased productivity and improved web formation. Other advantages include the ability to continuously spin highly pigmented polymer filaments and reduced hazards associates with high noise levels.

Abstract translation: 一种改进的方法和装置，用于通过将细丝旋转到淬火室中以形成非织造纤维网，其中它们与骤冷流体接触，然后利用骤冷流体通过横跨整个机器宽度的二维喷嘴拉丝，并收集长丝 作为多孔表面上的纤维网。 与现有技术相反，可以使用低动量流体压力，并且使用非喷射拉伸装置来最小化空气湍流和拉伸装置中产生的丝束缠结，同时保持基本上恒定的横机丝分布。 该设备和工艺减少了与丝线断裂和扩散有关的问题，并提高了生产率和改善了织物的形成。 其他优点包括连续旋转高度着色的聚合物长丝的能力以及降低与噪音水平相关的危害。

公开(公告)号：US4340563A

公开(公告)日：1982-07-20

申请号：US146450

申请日：1980-05-05

Applicant: David W. Appel ,  Michael T. Morman

Inventor： David W. Appel ,  Michael T. Morman

IPC: D04H3/03 ,  D01D5/08 ,  D04H3/16 ,  B29J5/00

CPC classification number: B32B37/15 ,  B29C47/0014 ,  B29C47/864 ,  D04H3/16 ,  B29C47/0021 ,  B29C47/0057 ,  B29C47/30 ,  B29C47/86 ,  B29L2031/731 ,  B32B2555/02

Abstract: An improved method and apparatus for forming nonwoven webs by spinning filaments into a quench chamber where they are contacted with a quenching fluid, then utilizing the quench fluid to draw the filaments through a two-dimensional nozzle spanning the full machine width, and collecting the filaments as a web on a porous surface. In contrast with the prior art, low motive fluid pressures can be used, and a non-eductive drawing means utilized to minimize air turbulence and the resulting filament entanglement in the drawing means while maintaining substantially constant cross machine filament distribution. The apparatus and process reduce problems relating to filament breakage and spreading and result in increased productivity and improved web formation. Other advantages include the ability to continuously spin highly pigmented polymer filaments and reduced hazards associated with high noise levels.

Abstract translation: 一种改进的方法和装置，用于通过将细丝旋转到淬火室中以形成非织造纤维网，其中它们与骤冷流体接触，然后利用骤冷流体通过横跨整个机器宽度的二维喷嘴拉丝，并收集长丝 作为多孔表面上的纤维网。 与现有技术相反，可以使用低动量流体压力，并且使用非喷射拉伸装置来最小化空气湍流和拉伸装置中产生的丝束缠结，同时保持基本上恒定的横机丝分布。 该设备和工艺减少了与丝线断裂和扩散有关的问题，并提高了生产率和改善了织物的形成。 其他优点包括连续旋转高色素聚合物长丝的能力以及与高噪声水平相关的减少的危害。

公开(公告)号：US4720252A

公开(公告)日：1988-01-19

申请号：US905228

申请日：1986-09-09

Applicant: David W. Appel ,  Adrian D. Drost ,  Jark C. Lau

Inventor： David W. Appel ,  Adrian D. Drost ,  Jark C. Lau

IPC: B29C47/08 ,  B29C47/14 ,  D01D4/02 ,  D04H1/56 ,  B28B5/00

CPC classification number: B29C47/0877 ,  B29C47/0021 ,  B29C47/0883 ,  B29C47/14 ,  D01D4/025 ,  D04H1/56

Abstract: There is disclosed a melt-blowing die head having a die tip which, instead of a number of individual orifices, has a single continuous slot opening running its length. In addition the die tip is reinforced by means of aerodynamically shaped bosses in the fluid delivery channels which bear between the air plate and the exterior surface of the die tip. The die tip may also have reservoirs at either end in which debris may be collected when the slot is cleaned while the die head is in place on a melt-blowing machine.

Abstract translation: 公开了一种具有模头的熔喷模具头，该模头不代表多个单独的孔，具有延伸其长度的单个连续槽口。 另外，通过在空气板和模具顶端的外表面之间承载的流体输送通道中的空气动力学形状的凸台来加强模头。 模具顶端还可以在任一端具有储存器，其中当在喷射机器上的模头就位时清洁槽时可以收集碎屑。

公开(公告)号：US4043739A

公开(公告)日：1977-08-23

申请号：US569779

申请日：1975-04-21

Applicant: David W. Appel

Inventor： David W. Appel

IPC: B29C48/31 ,  B29C48/345 ,  B29F3/04

CPC classification number: B29C47/165 ,  B29C47/30 ,  B29C47/0014 ,  B29C47/0021

Abstract: An extrusion die for thermoplastic polymer is disclosed having a distributor which provides substantially constant residence time and pressure loss of polymer flowing through the die from the inlet to the extrusion aperture. Dies are disclosed for extrusion of sheet, film and discontinuous microfibers. The distributor has cross flow channels for conveying the polymer laterally and axially connected pressure loss and residence time control sections for independently compensating for the varying pressure loss and residence time characteristics of the polymer flow through the distribution channels. With a distributor so constructed, the overall height of the die remains substantially the same as the die width increases so that the distributor is particularly suitable for dies for wide extrusion lines.

Abstract translation: 公开了一种用于热塑性聚合物的挤出模具，其具有分配器，该分配器基本上恒定地从入口到挤出孔流过模具的聚合物的停留时间和压力损失。 公开了用于片材，薄膜和不连续微纤维挤出的模具。 分配器具有横向流动通道，用于输送聚合物横向和轴向连接的压力损失和停留时间控制部分，用于独立地补偿通过分配通道的聚合物流的变化的压力损失和停留时间特性。 通过这样构造的分配器，模具的总体高度保持与模具宽度增加大致相同，使得分配器特别适用于宽的挤出生产线的模具。