公开(公告)号：US20180119353A1

公开(公告)日：2018-05-03

申请号：US15561452

申请日：2016-05-19

申请人： VALMET AKTIEBOLAG

发明人： Karl-Johan TOLFSSON ,  Ingvar KLERELID ,  Allan GRIMM ,  Hans IVARSSON

IPC分类号： D21F11/00 ,  D21H27/40 ,  B31F1/12

CPC分类号： D21F11/006 ,  B31F1/12 ,  B31F1/126 ,  D21F9/003 ,  D21F11/002 ,  D21F11/06 ,  D21H27/40

摘要： The invention relates to a method of making a structured fibrous web (W). The method comprises forming a fibrous web (W) and conveying the formed fibrous web on a water receiving felt (5) to a dewatering nip (PN) formed by a first press unit (8) and a second press unit (9) and where an endless belt (11) is passed through the nip together with the fibrous web 5 (W) and the water receiving felt (5), The endless belt has a side which is covered by a polymer and which contacts the fibrous web (W) in the dewatering nip (PN). After the dewatering nip, the web (W) is transferred with a speed difference to an endless structured clothing (12) which is permeable to air and has protruding knuckles (40) on the side that contacts the fibrous web (W) and which protruding knuckles (49) give the structured clothing (12) a topographic surface 10 area which, for a given length of the structured clothing (12) in the machine direction and a given width of the structured clothing in the cross machine direction, exceeds the plain surface area of a part of the endless belt (11) having an equal length and width. The structured clothing is operated at a speed which is so much lower than the speed of the endless belt (11) that the relative difference in speed between the endless belt (11) and the structured (12) fabric 15 corresponds to the relative difference in surface area between the endless belt (11) and the structured clothing. In this way, the fibers of the fibrous web (W) will be evenly distributed on the structured clothing (12). The invention also relates to a creped fibrous web (W) having a basis weight in the range of 14 g/m2-40 g/m2, and having a three-dimensional structure formed by depressed regions (45) and elevated regions (46). The fibers of the fibrous web (W) are 20 evenly distributed over the surface of the creped fibrous web (W).

公开(公告)号：US09121118B2

公开(公告)日：2015-09-01

申请号：US13358623

申请日：2012-01-26

申请人： Hemant Gupta ,  Ajay Singh

发明人： Hemant Gupta ,  Ajay Singh

IPC分类号： D21F11/06 ,  D04H1/70 ,  D04H1/736 ,  D04H18/04

CPC分类号： D04H1/70 ,  D04H1/732 ,  D04H1/736 ,  D04H1/76 ,  D04H18/04 ,  D21F11/06

摘要： Disclosed herein are cylinder forming apparatuses for making nonwoven webs. In one embodiment, a cylinder forming apparatus has a first source configured to dispense a first fluid flow stream, and a second source configured to dispense a second fluid flow stream, wherein at least the first fluid flow stream comprises a fiber; an arcuate mixing partition downstream from the one or more sources, the arcuate mixing partition positioned between the first and second flow streams, the apparatus defining one or more openings that permit fluid communication between the two flow streams; and a cylindrical receiving region situated downstream from the sources and proximal to the first flow stream and designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream. Methods of using the apparatuses are also disclosed.

摘要翻译： 本文公开了用于制造非织造纤维网的圆筒形成装置。 在一个实施例中，圆筒形成装置具有构造成分配第一流体流动流的第一源和被配置为分配第二流体流动流的第二源，其中至少第一流体流包括纤维; 一个或多个源下游的弧形混合分隔件，位于第一和第二流动之间的弓形混合分隔件，该装置限定允许两个流动流之间的流体连通的一个或多个开口; 以及位于源的下游并且靠近第一流动流的圆柱形接收区域，并被设计成接收至少一个组合的流动流并通过从组合的流动流收集纤维形成非织造纤维网。 还公开了使用该装置的方法。

公开(公告)号：US20110056638A1

公开(公告)日：2011-03-10

申请号：US12936266

申请日：2009-04-07

申请人： Henri Rosset

发明人： Henri Rosset

IPC分类号： D21H21/42

CPC分类号： D21F11/06 ,  D21F11/08 ,  D21H21/42

摘要： A method of fabricating a sheet by papermaking, the sheet including at least one ply of a fiber substrate and at least one ribbon, wherein the ribbon is introduced in a fiber suspension of a vat former papermaking machine enabling the ply to be formed; or in direct contact with the vat former; or in contact with the already-formed ply; the point at which the ribbon is introduced being selected so as to create at least one region of increased thickness or of reduced thickness in the sheet in register with the ribbon, the reduced thickness being due to a reduction in the de-watering of the fiber suspension caused by the ribbon.

摘要翻译： 一种通过造纸制造片材的方法，所述片材包括至少一层纤维基材和至少一个带，其中所述带引入到可以形成所述层的大桶前造纸机的纤维悬浮液中; 或直接与大桶前者接触; 或与已经形成的层接触; 色带被引入的点被选择成在薄片中形成厚度增加或厚度减小的至少一个区域，该区域与带状物对准，减小的厚度是由于纤维脱水的减少 由色带引起的悬挂。

公开(公告)号：US20090236061A1

公开(公告)日：2009-09-24

申请号：US11995227

申请日：2006-07-03

申请人： Uwe Gruszczynski ,  Thomas Bodendieck

发明人： Uwe Gruszczynski ,  Thomas Bodendieck

IPC分类号： D21H21/40 ,  D21J3/00

CPC分类号： D21H21/40 ,  D21F1/44 ,  D21F11/008 ,  D21F11/06

摘要： The present invention relates to a method for manufacturing a security paper, for security or value documents, that exhibits at least one through opening (12) having characteristic irregularities (14) in the edge region. According to the present invention, a paper web having thin sites in the form of the outline of the desired shape of the at least one through opening (12) is formed on a paper mold, and the paper web dewatered after sheet formation, the region delimited by the thin sites being removed from the paper web by the occurring forces.

摘要翻译： 本发明涉及一种用于安全或价值证件的安全纸的制造方法，该安全纸具有在边缘区域中具有特征性凹凸（14）的至少一个通孔（12）。 根据本发明，在纸模上形成具有所述至少一个通孔（12）所需形状轮廓形式的薄部位的纸幅，并且纸幅在片材形成之后脱水，所述区域 由通过发生的力从纸幅移除的薄部位限定。

公开(公告)号：US1526553A

公开(公告)日：1925-02-17

申请号：US52269121

申请日：1921-12-15

申请人： FLINTKOTE CO

发明人： LESTER KIRSCHBRAUN ,  MORSE THOMAS W

IPC分类号： D21F11/06

CPC分类号： D21F11/06