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Plywood

Plywood is a multi-layer construction material which is manufactured by gluing specially processed birch and alder veneer. The number of layers varies from four and above. To make the plywood more durable veneer layers are laid in such a way that the wood grains are completely perpendicular to the previous sheet.

Plywood

FK plywood is plywood produced by gluing veneer with carbamide adhesive. This plywood is used mainly for interior decoration, furniture production, wooden container production and inside constructions.

Main plywood characteristics (GOST 3916.1-96): Size of sheets 1,525х1,525 mm
Grade from  I/I to  IV/IV, emission class Е1
Sheet thickness  4, 6, 8, 9, 10, 12, 15, 18 mm
Processing type: sanded, unsanded
Water resistance grade: FK (water-resistant plywood)
Raw materials: round deciduous timber (birch, alder) STB 1712-2007
Humidity: no more than 10% (actually, 6-8%)

The ultimate strength while folding along the glue line after soaking in water for 24 hours:
Birch plywood at least 1.5 MPa (actually, 1,98; 1,95; 1,75; 1,8; 1,74; 1,91; 1,76 MPa)
Alder plywood at least 1.0 MPa (actually, 1,92; 1,72; 1,78 MPa)

Inquiries about purchasing can be made by:

phone/fax (8 10 375 2340) 7-18-67

pinchuk.e@wood.by

Skype: fanera2009

Description of plywood grades:

Grade I.

The following is not allowed:

  • pin knots, veneer overlap in exterior layers, open shakes;
  • light and dark barking pockets, unsound colour stains, decay;
  • presence of the sealing tape, glue stains;
  • scratches, dents, indents, combs, breakouts, oversanding, metal inclusions, joint clearances, ply separation, plywood blister, bark patch, wood inserts, double inserts.

The following is allowed:

  • up to 5 healthy intergrown dark and light knots with the diameter of no more than 15 mm per 1 m2 of the sheet surface and cracks of no more than 0.5 mm wide; 
  • partially intergrown, black and loose knots, holes from them, no more than 3 bore holes with the diameter of no more than 6 mm per 1 m2 of the sheet surface;
  • no more than 2 close shakes with the length of no more than 200mm per 1 m of the sheet surface;
  • insignificant accidental variation in the wood structure, except dark dormant bud marks;
  • sound colour stains up to 15% of the sheet surface, insignificant crimp;
  • up to 3 incisions with the diameter of up to 6 mm per 1 m2 of the sheet surface;
  • veneer deficiency, sanding and cutting edge defects of no more than 2mm;

Grade II. 

The following is not allowed:

  • unsound colour stains, decay, oversanding, metal inclusions, joint clearances, ply separation, plywood blister, bark patch;

The following is allowed:

  • pin knots, up to 10 healthy intergrown dark and light knots with the diameter of no more than 25 mm per 1 m2 of the sheet surface and cracks of no more than 1 mm wide;
  • partially intergrown, black and loose knots, holes from them, no more than 6 bore holes with the diameter of no more than 6 mm per 1 m2 of the sheet surface;
  • no more than 2 close shakes with the length of no more than 200mm per 1 m of the sheet surface, no more than 2 open shakes with the width of 2mm provided they are slushed;
  • up to 10 light and dark barking pockets with the diameter of no more than 25 mm per 1m2 of the sheet surface with cracks up to 1 mm;
  • sound colour stains up to 15% of the sheet surface, insignificant crimp, scratches;
  • up to 6 incisions with the diameter of up to 6 mm per 1 m2 of the sheet surface;
  • no more than 1 veneer overlap in exterior layers with the length of up to 100 mm per 1 m of the sheet surface, veneer deficiency, sanding and cutting edge defects of no more than 5 mm;
  • presence of the sealing tape in unsanded plywood, glue stains on up to 2% of the sheet surface;
  • dents, indents, combs within the range of maximum width deviations on up to 5% of the sheet surface, insignificant crimp;
  • up to 8 wood inserts for patchwork and knotting per 1 m2 of the sheet, no more than 1 open shake with the width of up to 30 mm and the length up to 300 mm per 1 m of the sheet surface.

Grade III. 

The following is not allowed:

  • unsound colour stains, decay, ply separation, plywood blister, bark patch.

The following is allowed:

  • pin knots, healthy intergrown dark and light knots with cracks of no more than 1,5 mm wide;
  • partially intergrown, black and loose knots, holes from them, no more than 10 bore holes with the diameter of no more than 6 mm per 1 m2 of the sheet surface;
  • no more than 2 close shakes, open shakes with the length of no more than 300mm and with the width of no more than 1 mm per 1 m of the sheet surface (the length up to 600 mm and the width of up to 5 mm is accepted) provided they are slushed;
  • light and dark barking pockets with cracks up to 1.5 mm;
  • wood structure deviations, sound colour stains, insignificant crimp, cracks;
  • up to 10 incisions with the diameter of up to 6 mm per 1 m2 of the sheet surface;
  • no more than 2 veneer overlaps in exterior layers with the length of up to 200 mm per 1 m of the sheet surface, veneer deficiency, sanding and cutting edge defects of no more than 5 mm;
  • presence of the sealing tape in unsanded plywood, glue stains on up to 5% of the sheet surface;
  • dents, indents, combs within the range of maximum thickness deviations, breakout on up to 15% of the sheet surface, oversanding on up to 1% of the sheet surface, crimp (for sanded plywood), wooliness, ripple;
  • no more than 1 joint clearance with the width up to 2 mm;
  • up to 2 wood inserts for patchwork and knotting, filling open shakes with the width of up to 50 mm and the length up to 500 mm per 1 m of the sheet surface.

IV сорт.

The following is not allowed:

  • decay, ply separation, plywood blister, bark patch.

The following is allowed:

  • pin knots, healthy intergrown dark and light knots, partially intergrown, black and loose knots, holes from them, bore holes with the diameter of no more than 40 mm, close shakes, open shakes with the length of up to 600 mm and the width of up to 5 mm;
  • light and dark barking pockets, wood structure deviations, sound and unsound colour stains;
  • incisions with the diameter of up to 40 mm, overlap in exterior layers, veneer deficiency, sanding and cutting edge defects with the width of no more than 5 mm;
  • presence of the sealing tape in unsanded plywood, glue stains, scratches, dents, indents, combs, breakout, oversanding, nonferrous metal staples;
  • joint clearance with the width up to 5 mm, crimp (for sanded plywood), wooliness, ripple, wood inserts for patchwork and knotting, filling open shakes.

For all grades:

  • warping of plywood up to 6.5 mm is neglected, warping over 6.5 mm is allowed with the bouge of no more than 15 mm per 1 m of the diagonal length of the plywood sheet;
  • plywood roughness for sanded plywood is no more than 100 µm, for unsanded plywood – 200 µm.

Laminated Chipboard