ANDRITZ will upgrade two pulp screw presses so that they can be utilized as bleach presses in parallel with two existing ANDRITZ twin wire presses. The upgraded screw presses will ensure the availability of the BCTMP (bleached chemi-thermomechanical pulp) line even during maintenance work. The scope of supply includes: New screw shafts equipped with modern wear protection (wear shoes and body plates); New low-pressure and medium-pressure screen baskets in split design; with exchangeable, grooved screen plates; New headboxes; Relocation of the screw presses, including erection work and assembly with new components; Start-up support.
UPM Plywood introduces a new fire retardant WISA-SpruceFR structural plywood for building and construction end uses. WISA-SpruceFR combines the market leading quality and structural performance with B-s1, d0 fire classification – the highest a wood product can have.
“This is uniquely different type of plywood product released to the market,” says Riku Härkönen, Product Manager at UPM Plywood. “There are products which are either extremely expensive, pressure treated, or they come with conditions and requirements for other structural solutions,” Härkönen describes.
Unlike in many other fire-resistant wooden products, the fire-retardant treatment in WISA-SpruceFR does not compromise the plywood’s technical properties; the panels preserve the original qualities of untreated WISA-Spruce plywood. Also, different from many other wood panels, WISA-SpruceFR does not require any special structural design to achieve the fire classification. It can be used just like a regular plywood panel.
“A significant development is that WISA-SpruceFR can be installed leaving air gaps between the panel and other structures and insulation and still retain the product’s fire-retardant properties and classification,” says Härkönen. The fact that the fire-retardant treatment is already applied on the panels during manufacturing is a substantial benefit for contractors and developers. It saves time, material and costs in various project phases,” Härkönen points out. “For a customer this means efficiency made easy as fire retardant properties can be built into a normal structure”.