Patent ID: 6780286
Filing Date: 2004-08-24
Classification: D21F

Abstract:
An apparatus for improving sheet properties in a paper making machine including a forming section,at least one forming fabric, having a machine side and a paper side, moving in the machine direction and a head box having head box slice which delivers a stock jet onto the paper side of the at least one moving forming fabric, comprising in sequence in the machine direction: a first fixed support element and in contact with the machine side of the at least one forming fabric; at least one drainage box provided with a foraminous support surface, and which is provided with support means for the first fixed element; a last fixed support element, supported by a drainage box, in contact with the machine side of the at least one forming fabric, which together with the first fixed support element and the machine side of the at least one forming fabric defines a reference surface; and the at least one drainage box having an independently controlled vertical adjustment means for at least one vertically adjustable support element which permits adjustment of the or each vertically adjustable element while the paper making machine is operating so as to move said at least one vertically adjustable support element into and out off contact with the machine side of the forming fabric.