Method of making fibrous mats and fibrous mats
    53.
    发明公开
    Method of making fibrous mats and fibrous mats 有权
    Verfahren zur Herstellung von Fasermatten,und Fasermatte

    公开(公告)号:EP1544352A2

    公开(公告)日:2005-06-22

    申请号:EP04026631.4

    申请日:2004-11-10

    IPC分类号: D21H17/37 D21H13/40

    摘要: Making mats using glass fibers having a diameter of about 13 +/- 3 microns, bound with a binder formed from a homopolymer or a copolymer of polyacrylic acid and a polyol produces fibrous nonwoven mats having high tensile strength and also an unexpected high flame resistance considering the amount of oxygen in the binder. Mats of the present invention pass the National Fire Protection Association's (NFPA) Flammability Test. Tabor stiffness of these mats is greater than about 40, preferably greater than about 50 and most preferably greater than about 55. Air permeability of the mats is preferably within the range of about 500 to about 800 CFM/sq. ft. Methods of making the mat are also disclosed.

    摘要翻译: 使用直径为约13 +/- 3微米的玻璃纤维制成垫,与由均聚物或聚丙烯酸和多元醇的共聚物形成的粘合剂结合,产生具有高拉伸强度的纤维非织造垫,并考虑到意想不到的高阻燃性 粘合剂中的氧气量。 本发明的垫片通过了国家消防协会(NFPA)的可燃性试验。 这些垫的抗拉强度大于约40,优选大于约50,最优选大于约55。垫的透气性优选在约500至约800CFM / sq的范围内。 还公开了制造垫子的方法。

    METHOD OF AND APPARATUS FOR CLEANING COLLECTION CHAIN CONVEYORS
    59.
    发明授权
    METHOD OF AND APPARATUS FOR CLEANING COLLECTION CHAIN CONVEYORS 失效
    装置和方法用于清洁收集链式输送机

    公开(公告)号:EP0991903B1

    公开(公告)日:2002-03-27

    申请号:EP98932733.3

    申请日:1998-06-15

    IPC分类号: F25D13/06 D04H13/00 D04H3/03

    摘要: In an apparatus for forming a fibrous mat, fibers and binder are collected on a moving continuous, foraminous collection chain conveyor to form the fibrous mat as the collection chain conveyor travels through a collection chamber. After the fibrous mat is formed on the collection chain conveyor, the fibrous mat is removed from the collection chain conveyor for further processing leaving a residue of fibers and binder on and in openings of the collection chain conveyor. Prior to again travelling through the collection chamber, the collection chain conveyor is cryogenically cleaned by applying a cryogenic liquid (e.g. nitrogen) to the collection chain conveyor to freeze the residue of fibers and binder and by mechanically removing the frozen residue of fibers and binder from the collection chain conveyor, e.g. by agitating, beating and/or brushing the collection chain conveyor.

    Filter medium having improved filtration and strength characteristics
    60.
    发明公开
    Filter medium having improved filtration and strength characteristics 有权
    与改变过滤和强度特性过滤介质

    公开(公告)号:EP0980700A3

    公开(公告)日:2002-02-20

    申请号:EP99116083.9

    申请日:1999-08-17

    发明人: Koger, Fritz

    IPC分类号: B01D39/16

    CPC分类号: B01D39/163 B01D2239/10

    摘要: The invention is directed to a nonwoven filter material having improved filtration and strength characteristics such that the medium can be pleated, if desired, without losing strength or being damaged; and a process for making such filter medium. The nonwoven filter material is comprised of thermoplastic filaments, the preferred filaments being polyester fibers in two denier-per-filament ranges of 0.5-2.5 and 2.5-7.0. Further, one and preferably both of the two different dpf filament are of the core-and-sheath type. While any of the non-woven processes may be used in making the non-woven filter medium of the invention, the preferred process is a one-step spunbond process.