MANUFACTURE OF SPUNBONDED NONWOVENS FROM CONTINUOUS FILAMENTS

    公开(公告)号:US20220205156A1

    公开(公告)日:2022-06-30

    申请号:US17694867

    申请日:2022-03-15

    IPC分类号: D04H1/736 D04H1/76 D04H3/077

    摘要: A spunbonded nonwovens is made by first spinning thermoplastic continuous filaments and emitting them from a spinneret in a direction and then passing the filaments in the direction through a cooling chamber. Meanwhile cooling air is fed from respective manifolds flanking the chamber into the chamber to cool the filaments and the cooling air is guided into the manifolds through respective manifolds and through respective planar homogenizing elements each having a plurality of openings forming a free open surface area constituting 1 to 40% of the total surface area of the respective planar homogenizing element. The cooling air passes from the planar homogenizing element into the cooling chamber through a flow straightener.

    Method and apparatus for conveying and treating a web
    3.
    发明授权
    Method and apparatus for conveying and treating a web 有权
    用于输送和处理网的方法和装置

    公开(公告)号:US09051673B2

    公开(公告)日:2015-06-09

    申请号:US14093168

    申请日:2013-11-29

    CPC分类号: D06C15/02 D04H3/14

    摘要: A method of conveying and treating a web, wherein the web is first conveyed over a transport surface and then over a rotating transfer roller at the end of the transport surface. The web is transferred from the transfer roller to a treatment roller at a spacing from the transfer roller. The conveying of the web is performed with the proviso and particularly a spacing a between the transfer roller and the treatment roller is set such that the web wraps around the treatment roller over a wrap angle α from 15° to 90°.

    摘要翻译: 一种输送和处理幅材的方法,其中所述幅材首先在输送表面上传送,然后在输送表面的端部处经过旋转的转印辊。 纸幅从转印辊转印到与转印辊间隔处的处理辊。 纸幅的输送是以附带条件进行的,特别是转印辊和处理辊之间的间距a被设定为使得纸幅围绕处理辊卷绕在从15度到90度的包角α上。

    Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit
    4.
    发明授权
    Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit 有权
    用于增加纤维束分散的方法和装置,其具有发散纤维牵伸单元

    公开(公告)号:US08246898B2

    公开(公告)日:2012-08-21

    申请号:US11725593

    申请日:2007-03-19

    IPC分类号: B29C47/00 B28C5/00

    摘要: A method and associated apparatus for melt extruding a nonwoven web includes providing a plurality of fibers from an extrusion device. The fibers are conveyed through a diverging profile portion of a fiber drawing unit (FDU) that causes the fibers to spread and expand in the machine direction within the FDU. The fibers are then conveyed through a diverging diffusion chamber spaced from the outlet of the FDU to reduce the velocity of the fibers and further spread the fibers in the machine direction. The fibers may be subjected to an applied electrostatic charge in either the diffusion chamber or the FDU. From the outlet of the diffusion chamber, the fibers are laid onto a forming surface as a nonwoven web.

    摘要翻译: 用于熔融挤出非织造纤维网的方法和相关设备包括从挤出装置提供多根纤维。 纤维通过纤维拉伸单元(FDU)的发散轮廓部分传送,纤维拉伸单元(FDU)使纤维在FDU内沿机器方向扩展和扩展。 然后将纤维传送通过与FDU的出口间隔开的扩散扩散室,以降低纤维的速度并进一步在机器方向上扩展纤维。 纤维可以在扩散室或FDU中施加施加的静电电荷。 从扩散室的出口,将纤维作为非织造纤维网铺设在成形表面上。

    Device for producing fibers from a thermoplastic synthetic resin
    5.
    发明授权
    Device for producing fibers from a thermoplastic synthetic resin 有权
    用于由热塑性合成树脂制造纤维的装置

    公开(公告)号:US07070403B2

    公开(公告)日:2006-07-04

    申请号:US10712796

    申请日:2003-11-13

    IPC分类号: B28B5/00

    CPC分类号: D01D4/025 D01D5/0985

    摘要: A nozzle for producing filaments or fibers of thermoplastic synthetic resin has at the nozzle end one or more bores, preferably opening at a flat surface and receiving respective inserts or shaped bodies which are formfitting in the bores and have along their peripheries respective nozzle channels opening at orifices through which the synthetic resin is discharged. Air streams may be directed at the strand at an acute angle when fibers are to be produced.

    摘要翻译: 用于生产热塑性合成树脂的长丝或纤维的喷嘴在喷嘴端具有一个或多个孔,优选地在平坦表面处开口,并且接收相应的插入件或成形体,其形成在孔中并且沿其周边分别相应的喷嘴通道 排出合成树脂的孔口。 当生产纤维时,空气流可以以锐角引导到股线。

    Stationary-pressure apparatus for producing spun-bond web
    7.
    发明授权
    Stationary-pressure apparatus for producing spun-bond web 失效
    用于生产纺粘纤维网的固定压力装置

    公开(公告)号:US5571537A

    公开(公告)日:1996-11-05

    申请号:US425113

    申请日:1995-04-21

    CPC分类号: D04H3/16 D01D5/0985 D04H3/02

    摘要: Nonwoven spun-bond is produced by a stationary pressure apparatus in which the shaft below the spinneret has an inlet section followed by the downwardly converging intermediate section, a drawing section and a diffuser opening above the collecting belt through which air is drawn by a suction device. The process air velocity profile has an intersection point with the drawing value at the intermediate section and the distance between the intersection point and the spinneret is smaller than the distance between the intersection point and the bottom end of the drawing section.

    摘要翻译: 非纺织纺粘是通过静止压力装置制造的,其中喷丝头下方的轴具有入口部分,随后是向下会聚的中间部分,在收集带上方的拉伸部分和扩散器开口,空气通过抽吸装置 。 过程空气速度曲线与中间部分的绘图值具有交点,并且交点和喷丝头之间的距离小于绘图部分的交点和底端之间的距离。

    Method of and apparatus for producing a spun filament web
    8.
    发明授权
    Method of and apparatus for producing a spun filament web 失效
    纺丝丝网的生产方法和设备

    公开(公告)号:US5487655A

    公开(公告)日:1996-01-30

    申请号:US226598

    申请日:1994-04-11

    CPC分类号: D04H3/03 D01D5/0985

    摘要: A spin blowing apparatus for producing spun fleece of thermoplastified synthetic resin provides that the spinneret plate and/or the fiber or filament blowing gap through which the blowing air/fiber mixture passes downwardly and/or the air flow resistance of the perforated belt upon which the fleece is collected can be varied in response to measured values of the specific weight and/or air permeability of the web to restore any deviation of the latter.

    摘要翻译: 用于生产热塑性合成树脂的纺丝纺丝的旋转吹风装置提供了喷丝板和/或纤维或细丝吹送间隙,吹送空气/纤维混合物通过该间隙向下流动和/或穿孔带的空气流动阻力, 收集的羊毛可以响应于幅材的比重和/或透气性的测量值而变化,以恢复后者的任何偏差。

    Apparatus for making spunbond
    10.
    发明授权

    公开(公告)号:US11603614B2

    公开(公告)日:2023-03-14

    申请号:US17154198

    申请日:2021-01-21

    IPC分类号: D04H3/16 D01D5/088 D01D5/098

    摘要: An apparatus for making spunbond from continuous thermoplastic filaments has a spinneret for spinning the continuous filaments and advancing them in a filament-travel direction, a cooler for cooling the filaments, a stretcher for stretching the filaments, a depositing device including a foraminous belt extending in a machine direction transverse to the filament-travel direction for deposition of the filaments as a nonwoven web and conveyance away from the stretcher, a diffusor between the stretcher and the foraminous belt so that filaments and primary air from the stretcher enter into the diffusor, and a suction device for extracting air through the foraminous belt at an unobstructed extraction region underneath the diffusor outlet and having a width b in a machine direction that is greater than a width B of the diffusor outlet. The diffusor forms upstream and downstream secondary air-inlet gaps at opposite ends through which secondary air is aspirated into the diffusor.