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    • 4. 发明申请
    • SYSTEM AND METHOD FOR CONTROLLING CURL IN MULTI-LAYER WEBS
    • 用于控制多层网上卷曲的系统和方法
    • WO2008039820A2
    • 2008-04-03
    • PCT/US2007/079489
    • 2007-09-26
    • 3M INNOVATIVE PROPERTIES COMPANY
    • SWANSON, Ronald P.HENDERSON, Andrew J.
    • B05D3/12B05D7/04B65H23/32B65H23/34B65H2301/5114B65H2701/1864
    • A system and method for controlling curl in multi-layer webs. The method can include providing a coated web, bending the web to induce a strain or pre-curl in the web, and curing the coating to form a multi-layer web. Some coatings shrink at least partially when cured such that curing the coating induces a curl in the multi-layer web. Bending the web occurs prior to curing the coating, and the pre-curl can be configured to at least partially counteract the curl induced by curing to form a multi-layer web having a desired curvature. The system can include a curing section configured to cure a coating, and can further include a web bending section configured to bend the web to induce a strain or pre-curl in the web. The web bending section can be positioned upstream of the curing section such that the web is bent prior to the coating being cured.
    • 用于控制多层网中的卷曲的系统和方法。 该方法可以包括提供涂布的网状物,弯曲该网状物以在该网状物中引起应变或预卷曲,并固化该涂层以形成多层网状物。 一些涂层在固化时至少部分收缩,使得固化涂层在多层网中引起卷曲。 在使涂层固化之前使卷材发生弯曲,并且可以将预卷曲配置为至少部分地抵消由固化引起的卷曲,从而形成具有期望曲率的多层卷材。 该系统可以包括被配置为固化涂层的固化部分,并且还可以包括卷筒纸弯曲部分,其被配置为弯曲卷筒纸以在卷筒纸中引起应变或预卷曲。 腹板弯曲部分可以位于固化部分的上游,使得腹板在涂层固化之前弯曲。

    • 6. 发明申请
    • APPARATUS AND METHOD FOR FLEXING A WEB
    • 用于复制WEB的装置和方法
    • WO2005102886A1
    • 2005-11-03
    • PCT/US2005/004632
    • 2005-02-11
    • 3M INNOVATIVE PROPERTIES COMPANY
    • SWANSON, Ronald P.
    • B65H23/34
    • B65H23/34B65H20/06B65H2511/112B65H2513/104B65H2553/40B65H2220/02
    • An apparatus and method for flexing a web is disclosed. The web passes over two co-rotating members (122), such as rollers or belts, which are separated by a small adjustable gap (G). The web travels around the first rotating member (111), is peeled off in the vicinity of the gap (G), bent back on itself in a small radius (R) and reattached on the second co-rotating member (121). The location of the small radius is fixed with a closed loop control system sensing the radius location and controlling the relative velocity of the two members (12). Strain in the web is adjusted with the size of the small radius, which is controlled by the adjustable gap and radius location.
    • 公开了一种用于弯曲网的装置和方法。 卷筒纸通过两个共同转动的部件(122),例如辊子或皮带,它们被小的可调节间隙(G)分开。 纤维网围绕第一旋转构件(111)移动,在间隙(G)附近剥离,以小的半径(R)自身弯曲并重新附着在第二同向旋转构件(121)上。 小半径的位置用闭环控制系统固定,感测半径位置并控制两个构件(12)的相对速度。 纤维网中的应变用小半径的尺寸进行调节,该半径由可调节的间隙和半径位置控制。