Abstract: A method for the separation of the paper web from the forming fabric in a paper-making machine comprising dividing the web into lengthwise strips to lessen the web adherence to the wire by utilization of a spray means incorporating a plurality of nozzles and then effecting web knock-down and separation from the wire by use of a slotted spray through which pressurized air jets are directed.Through this method very low pressures are required to achieve web separation and the risks of re-contact between web and wire are positively prevented.

Abstract: A forming wire for use in paper-making, cellulose and similar machines, comprising a first layer of weft threads, which layer is intended in the position of use of the wire to face the material to be formed, a second layer of weft threads, which layer is intended in the position of use of the wire to face the machine drive rollers, and synthetic warp threads interweaving said two weft layers. Said first layer of weft threads crosses said warp threads on said outer face of the wire closest to the material to be formed, in at least 80% of all cross points, or according to the shaft (harness) number used in between 80% and 90% of all cross points, whereby the wefts on the wire face turned towards the material to be formed float over a large number of warps. The number of cross points on this wire face thus is reduced, eliminating the tendency of the wire to cause marking on sensitive paper qualities.

Abstract: A double-layer forming wire for paper-making, cellulose and similar machines, said wire being particularly arranged to prevent marking on the material to be formed. The wire comprises two layers of weft yarns interconnected by warp threads, the weft layer intended to face the material to be formed (top layer) and said warp threads being essentially tangents to the plane of the wire intended to face said material. In accordance with a special arrangement the warp threads also bind separately with the layer of weft threads (top layer) intended to face said material. The invention likewise concerns a method of producing a forming wire of the above structure.

Abstract: A forming fabric for use in paper-making, cellulose or similar machines. The fabric comprising two layers of synthetic weft threads and synthetic warp threads. The latter interconnecting the weft thread layers but also binding separately the weft threads of the layer forming the paper making side of the fabric. The weft thread layer which forms the wear side of the fabric is tangent to a plane which is positioned outside the plane which is tangent to the warp threads interconnecting the weft layers.