FIBER WEB MACHINE AND METHOD OF FORMING A MULTI-PLY WEB

A method of forming a multi-ply web in a fiber web machine, comprises the steps: feeding different pulp suspensions to diffusers of a multi-layer headbox,- guiding the different pulp suspensions through the diffusers of the multi-layer headbox to eject them onto a wire of a forming section, the wire forming a closed loop,- dewatering the liquid substances to form a filler ply in the form of an at least three-ply web,- merging the at least three-ply web with a second web formed at a second head box ejecting pulp suspension on a wire of a second forming section, and merging the at least three-ply web with a third web formed at a third head box ejecting pulp suspension on a wire of a third forming section, wherein the third web is arranged on a side of the two-ply web opposite to that where the second web is arranged. 在纤维幅材机中形成多铺层幅材的方法，包括以下步骤：将不同的纸浆悬浮液供给到多层流浆箱的扩散器；通过多层流浆箱的扩散器引导不同的纸浆悬浮液以将其喷射到成型部的网上，该网形成闭合环；使液体物质脱水以形成至少三铺层幅材形式的填充铺层；将至少三铺层幅材与在将纸浆悬浮液喷射到第二成型部的网上的第二流浆箱处形成的第二幅材合并；以及将至少三铺层幅材与在将纸浆悬浮液喷射到第三成型部的网上的第三流浆箱处形成的