Metso Paper Automation Oy

Vaslmet Technologies, Inc.

Valmet Technologies Oy

Tommi Luosma

Reijo Hassinen

Jukka Samppala

Petri Norri

Hannu Eerikäinen

Jukka-Pekka Alen

Tapio H&auml;rk&ouml;nen

Tuomas Naat&auml;nen

Mikko Rautamies

Matias SJÖLUND

A doctor apparatus for a web forming machine to doctor a moving surface, and the doctor apparatus () includes a doctor blade () and blade holder (), which blade holder () has a holder component () preferably made of aluminum, to which the doctor blade () is mounted by a front plate (), and a frame component () preferably made of fiber-reinforced polymer material, to which the holder component () is mounted. The doctor apparatus () having a loading element () arranged between the frame component () and holder component () to load the blade holder () and further the doctor blade (). The invention also relates to a corresponding blade holder and holder component.

Doctor apparatus and blade holder

A steam box includes a elongated steam-distribution chamber, regulator chambers set in a row next to the elongated steam-distribution chamber and covered on one side with a continuous perforated screen. Operating devices distribute the steam from the distribution chamber to each regulator chamber. The steam box is intended to feed steam through the perforated screen to the web, to heat it according to a desired profile. The perforated screen is secured along one long edge to hinge members and along the opposite edge to locking members and is arranged to be able to be opened, to permit access to the regulator chambers.

Steam box

Growing community of inventors

Jyväskylä, Finland

Tommi Luosma