Plywood QC Inspection Checklist : Part 28 The physical performance testing items of plywood

Plywood QC Inspection Checklist : Part 28 The physical performance testing items of plywood

1. Tests were performed in water absorption (24 hours) recovery in thickness; swelling more recovery thickness swelling.

2. Bending strength and  stiffness

3. Peeling Strength

4.Plywood Shear Test

5.Formaldehyde emission

ASTM D 6007 microclimate box method

JIS A 1460 24-hour glass dryer method

6.physical property

7.Bonding strength, moisture content, impregnated peeling, static bending strength,and modulus of elasticity, internal shear strength, horizontal shear strength,Surface bonding strength, etc.

8.Glue properties:Viscosity, pH, free formaldehyde, solid content,Curing time, density

9.Stress type

….Face grain parallel to span
….Face grain normal to span
parallel to face grain
normal to face grain
parallel to face grain
normal to face grain
on face
….in face veneer
….in back veneer
….At first glueline
….face grain parallel to span
….face gain normal to span
….Parallel and normal to face grain
….face grain parallel to span
….face gain normal to span
parallel to face grain
normal to face grain
….Parallel and normal to face grain

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