Production process

The three stages of Lameco's production line can be utilised in a versatile way. The capacity of the production line is 50,000 cubic metres per year. Logs and log blanks can be delivered either in specified sawn dimensions in lengths of up to 6 metres or jointed to a maximum length of 12 metres. We can also finger-joint or profile the customer's own sawn timber. Layers of wood are dried intact in small sections and then glued together so that the strongest heartwood is kept at the surface of the log. This way, even the smallest cracks from the drying process will be invisible.

Through drying the sections even further, the product's characteristics can be improved and this way we minimise warping, twisting, and cracking of logs caused by drying when they are in the final product, the log wall. The settling of a wall constructed of laminated logs is minimal, and the quality of the final product remains stable year after year. Laminated logs can be produced from spruce or pine.


PLANING OF SAWN TIMBER

The sawn timber is unloaded automatically from the pile, and each layer of wood is turned by a camera turning system so that the heartwood is on the upper side. The layers are guided to a six-cutter planing machine, which planes all four sides of the sawn timber. The moisture content of the wood is checked automatically before gluing, and overly humid or otherwise low-quality timber is rejected from the production line.

QUALITY GRADING

After planing, the layers are separated into A and B classes, and again the lower-quality planed timber is rejected from the line. The grading is visual and there is storage for about 10 cubic metres for both grades.

GLUE APPLICATOR

The layers taken from A and B storage are automatically fed through the glue applicator. We use a melamine-urea-formaldehyde (MUF) glue, which is hard, weather-proof, bright, and water-soluble. A separate ribbon spreader applies the two-component glue to the surfaces to be glued. In the pre-pressing area, the layers of wood are lightly pressed together and the blanks are placed next to each other.

GLUE-PRESSING

The layers of sawn timber are pressed together and dried in a high-frequency, hot press, which gives a high throughput compared with cold pressing techniques because the pressing time is only a fraction of the time needed in cold pressing. Blanks are glued in a hall in which the temperature and humidity are controlled by an automatic control system.
 
PROFILE PLANING

Log blanks can be profiled with a five-cutter log-planing machine according to the wishes of the customer.