Physical and mechanical performance of Film faced plywood TESTING

Physical and mechanical performance of plywood specifications TESTING Parameter

Parameter name categories :

1 Moisture content, %

2 Ultimate static bending strength:
—along the grain of face veneers, MPa, min
—against the grain of face veneers, MPa, min

3 Modulus of elasticity in static bending:
—along the grain, MPa, min
—against grain, MPa, min

4 Ultimate tensile strength along the grain of face
veneers, min MPa
5 Adhesion strength of coating to plywood :Coating must not delaminate at the crossing point of two cuts

6 Steam resistance :No swelling. Small loss of gloss. No blisters.

7 Sodium hydroxide (NaOH) resistance :Solution color after testing (NaOH) from light yellow to colorless

8 Cement resistance: No cement coloration after contact with plywood

Average ultimate shear strength along the glueline, MPa

Notes:
1 EXT (FSF) plywood is prepared to testing using one of the four following methods:
—boiling in water for 1 hour;
—soaking in water for 24 hours at 20±3°C, boiling in water for 6 hours;
—soaking in water for 24 hours at 20±3°C, boiling in water for 4 hours, drying in a ventilated cabinet
for 16-20 hours, second boiling in water for 4 hours, cooling in water for 1 hour;
—soaking in water for 24 hours at 20±3°C, boiling for 72±1 hours, cooling in water for 1 hour;
Preparation method is chosen by agreement with the customer.
2 Percentage of destruction in wood is determined visually
3 Shear testing is performed in different glue lines by agreement with the customer

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