OSB

OSB (Oriented Strand Board) is a wooden product – a flatly pressed three-layer board manufactured from rectangular strands (flakes) by the method of hot pressing in condition of high pressure and temperature with the use of synthetic resin as a bonding agent. This is the first board of wooden origin developed specially for construction industry.

History of OSB

Oriented strand board is in itself a second-generation waferboard. The main difference of OSB from a waferboard is the dimension of strand. Strands in oriented strand boards are more narrow and long. Apart from that, strands in OSB are located in parallel to each other, however perpendicularly to strands in other layers. There are three layers in total, the same as in waferboard. However, owing to orientation of strands in layers, OSB obtained unique properties that opened a whole range of new spheres of use.

The first real OSB board was manufactured in 1982 in Alberta (Canada) at Edison-OSB Plant, which at that time was owned by “Pelican Sawmills Limited” Company. New wooden boards were characterized by the same durability and stiffness as coniferous plywood. This allowed Edison-OSB Plant to position oriented strand boards on the market as an analog of plywood and a material of higher class than waferboard.

OSB Waferboard

OSB-vs.-Waferboard

OSB-vs.-Waferboard1

OSB Manufacturing Process

OSB board contains 90% of natural wood. It is manufactured from specially selected pine logs harvested mainly in the process of forest thinnings. Primary logs are debarked and then reduced to small rectangular strands with the length of 100 mm, thickness of 0.6 mm and various width depending on the part of the log they were made of. Strands in external OSB layers are placed in parallel to the board length, and strands in internal layer of the board are located perpendicularly to its length. High technical parameters are achieved owing to preservation of the fibrous structure of wood, leveling of flat strands in layers and adhesion of a long strand. Due to the special glue and paraffin emulsion, sprayed on the strands, high weather resistance of the board is achieved.

Our board does not have any projections, cracks or other internal defects. Owing to the modern manufacturing technology, OSB is characterized by parameters that can be compared with parameters of plywood.

OSB manufactured by ТОВ “SWISS KRONO” is distinguished by high density, stability of the form, excellent weather resistance, good sound isolation, simplicity of cutting and processing.

The microstructure of interconnected strands protects board edges from breaking off in the process of nailing, ensures high stiffness and durability and both bending resistance and shear resistance, what is extremely important in frame house building.

OSB Types

OSB 1 – universal board that does not resist load, used for internal works in dry conditions;
OSB 2 – load-resistant board, used for works in dry conditions;
OSB 3 – load-resistant board, used for works in conditions of moderate humidity, for internal and external works;
OSB 4 – board that resist heavy loads in conditions of high humidity.

Application

There are three main directions of OSB use:

Construction
– paneling of external and internal walls, attics;
– manufacturing of subflooring for basis and linoleum flooring;
– manufacturing of constructions of reusable removable formwork;
– roof covering;
– production of wall panels;
– construction of temporary fences and temporary constructions;
– use in decorative purposes, interior decoration, etc.

Furniture industry
– production of furniture panel elements;
– production of wall cabinets, cupboards, bedside-tables, drawers, shelves, etc.;
– production of stands for cushioned furniture, etc.

Production of containers and packaging
– production of transportation containers, as a supplement in the process of packaging,
– as a substitute of sawn timber, etc.