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Investors
Raute aims to ensure competitive returns for its investors. From the investor section you find Raute’s financial information as well as information about shares, investor relations, Raute’s governance and Raute as an investment.
Sustainability
We want to lead the industry towards a more sustainable future in engineered wood products.
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Lines & Machines
Lines
There is always a "fit-to-your-need" line from Raute's own offering for any and all production processes starting from log handling, running through veneer production to plywood, LVL, or solid wood panels.
Machines
The core of production lines is made of machines. Many of Raute’s machines can be installed into existing lines as modernizations, also to other brand but Raute lines.
Analyzers
Making the most out of your raw material is made possible by modern analyzing systems. Intelligent analyzers make the right decisions at right time. Raute offers a wide variety of different types of analyzers for veneer, plywood, LVL, and lumber production.
Future-proof your mill.
Raute offers services worldwide to maintain existing veneer, plywood, and LVL production machinery and to improve the production.
As production lines develop and their speeds increase, human operators are no longer able to make good decisions when monitoring the line. At the peeling line, when the speed is very slow, humans can still do the job quite well.
In modern production lines, clipping speeds can exceed 100-200 m/minute. At these speeds, humans are only able to recognize the biggest faults at the beginning of the veneer ribbon. After that they will start clipping either too much waste or leave defects to the full face-quality sheets. This will later cause process issues and recovery losses.
If your peeling line is now monitored by humans, ask yourself:
Why should you grade veneer sheets at the peeling line?
Drying capacity is often a bottleneck, when a mill is trying to increase production: the peeling line could produce more veneer, but manufacturing must be slowed down, because the dryer cannot process that many sheets. When you are looking for ways to increase drying capacity, grading sheets at the peeling line is your best bet.
Grading sheets by their moisture content allows you to dry each sheet the right amount of time. This frees up drying capacity and helps you avoid over drying. Moisture sorting also helps improve quality: when moisture variation is smaller, there are less issues in gluing and other processing phases later in the production. This will help you minimize waste and maximize dry veneer quality.
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Moisture-based grading of veneer sheets at the peeling line
The sheets’ moisture content is not consistent between different sheets and drying times can vary by 50% between moisture classes. When veneers are sorted into 2-4 moisture classes at the peeling line, they can later be dried optimally.
The veneer sheets that are glued and pressed also benefit from moisture grading, because too wet sheets may blow up in the press. Accurate moisture grading can free up to 20% more drying capacity, save 5-10% energy per m3, and the sheets are not over dried. As a result, less sheets break or shatter later in the process, and emissions are reduced.
Intelligent moisture analyzers also help you optimize clipping width based on estimated shrinkage. This will improve recovery and minimize clipping widths.
Visual grading and clipping veneer sheets at the peeling line
A basic method for visual grading uses photocell imaging to recognize holes in the veneer surface and start to clip full sheets. This is a simple way to improve sheet cutting, but not accurate enough for high-speed lines.
More advanced camera solutions and intelligent analyzers can see all defects in the wood from tiny worm holes to bark and decay. All faults do not worsen end-product quality (see the infographic for details). Analyzers help you decide what to do with them: clip off the fault already at the peeling line, after the dryer, or not at all.
Accurate analyzers also help optimize face veneer recovery, and the share of sheet to be composed or patched.
Depending on how you want to handle each defect and what you can allow in the end-product, you can create rules to automate clipping. The cameras suggest what to remove from each sheet, where to clip, and they calculate the amount of waste. You can better decide what to send to the dryer and optimize its capacity.
Visual analyzers help you produce consistent quality, optimize raw material usage, minimize waste and compose less. You are also able to increase production speeds and capacity and produce more face veneer quality.
Accurate grading gives flexibility to tailor products for market needs
Whether it's selecting veneers with certain visual properties or making sure veneers meet specific performance standards, grading provides flexibility to tailor products to meet diverse market needs. This improves product value and market competitiveness.
Raute has a full selection of visual and moisture analysis tools for veneer peeling lines. The best option depends on your automation level, capacity and customer demands for quality. Check out our Analyzers webpage for more, and let our experts help you find the one that suits your needs!
> Read more about the whys of grading
> Read more about grading in the drying line.
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