BS  EN 314-1  Plywood – Bond Quality – Test Methods.

BS  EN 314-1  specifies methods for determining the bonding quality of veneer plywood, by shear testing.

Before carrying out the shear tests the plywood samples are required to undergo a sequence of pre-treatments e.g. section 5.14 calls for immersion for 72 hours (±1)

in boiling water followed by cooling in water at 20°C (±3°) for at least 1.

Annex A in the standard covers the determination of the percentage of apparent cohesive wood failure by comparison to reference illustrations of the texture of

failed surfaces.

Annex B provides guidelines for the evaluation of the glue bond of insulating core plywood.

*** Before conducting this standard , it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.