Valmet Aktiebolag

Scott McClure Wightwick

Dennis Edward Jewitt

Anders Lindén

Mattias Johansson

Martin Emanuelsson

The invention relates to a paper making machine () comprising a forming section () in which a fibrous web (W) can be formed, a drying section () in which a formed fibrous web (W) can be dried; and a reel-up () on which a dried fibrous web (W) can be wound into a roll (). The paper making machine () is arranged to carry a fibrous web (W) in the machine direction (MD) along a predetermined path (P) and the paper making machine () has at least one water jet cutting device () arranged to cut the fibrous web (W) that is moving in the machine direction (MD) such that the fibrous web (W) is divided into at least one waste part () and a remaining part (). The paper making machine () is arranged to direct the at least one waste part () away from the predetermined path (P) and to convey the remaining part () further in the machine direction (MD) along the predetermined path (P). The paper making machine () further comprises a blowing device () arranged to blow gas or air against the water jet cutting device () in a direction toward the remaining part of the fibrous web () such that fiber particles that have been released by the cutting action of the water jet cutting device () are blown onto the surface () of the remaining part () of the fibrous web (W) and follow the remaining part () of the fibrous web along the predetermined path (P). The invention also relates to a method in which gas or air is blown in a direction toward the remaining part of the web such that fiber particles that have been released by the cutting action of the water jet cutting device () are blown onto the surface () of the remaining part () of the fibrous web (W). The stream of air or gas is given a shape which is circular cylindrical or conical and expanding in the direction in which the stream moves.

Paper making machine and a method of cutting a fibrous web in a paper making machine

The invention relates to a drying section and comprises one or more through air drying cylindersand a permeable fabricthat runs in a loop and wraps part of the circumference of each through air drying cylinder. The loop of the fabricis divided in a web-carrying partand a conditioning part. The web-carrying part extends from a receiving pointto a transfer pointwhere a fibrous web is transferred to a further component. The conditioning part extends from the transfer pointto the receiving point. The conditioning part has a cleaning sectioncomprising a showerto wash residue from the fabric. A dewatering sectionis arranged to act on the fabricafter the cleaning section and comprises one or several suction dewatering devices. An applicator sectionis arranged in the conditioning partafter the dewatering section. The applicator section comprises an applicatorfor applying release agent on the fabric. The dewatering sectionof the fabric loop comprises a substantially vertical run VR of the fabric which does not deviate more than 30&#xb0; from a vertical plane and a suction dewatering deviceis placed along the vertical run of the fabricon the web-contacting side of the fabric. The dewatering section either comprises a further suction dewatering device placed along the vertical run of the fabric on the side of the fabricthat is opposite the web-contacting side or it has room for installing a further suction dewatering device of the same size as the suction dewatering devicethat is located on the web-contacting side of the fabric.

Growing community of inventors

Safety Beach, Australia

Scott McClure Wightwick