Overlay Face - Overlay Veneer Core – Overlay Sound Sanded Back Grade
| Product Name |
Base Panel / Platform |
| Grade |
OVL– OVLVC - OSSB |
| Face & Back Veneer |
Okoume / Bintangor |
| Core Veneer |
Poplar |
| Glue Type |
Type I WBP (Water Boiling Proof: Exterior, Phenolic)
Type II MR (Moisture Resistance: Interior,
Urea Formaldehyde) |
| Thickness |
12mm(9ply) / 15mm(11ply) / 18mm(13ply) |
| Size(mm) |
1200 x 2400 / 1220 x 2440 / 1250 x 2500 |
Overlay Grade for Face (Okoume)
| Live Knots |
50.8mm Max. Diam. |
| Dead Knots |
Well puttied & color matched |
| Knotholes |
19mm max. diam. Puttied & color matched |
| Burls |
Yes, Smooth |
| Color Variation |
Yes |
| Stain & Mineral Streak |
Yes |
| Dry Pitch & Bark Pockets |
Well puttied & Color matched |
| Wormholes, pinholes |
11 per 1M2, 32 per 1220 x 2440. 1.6mm Max. Diam, Puttied |
| Worm tracks |
Filled linear hole 15.9mm max. well puttied |
| Vane Marks |
Sanded, Smooth |
| Cross Breaks |
Hairline 102mm max. length |
| Doze |
Firm, Slight, well Puttied, Blending |
Overlay Grade for Veneer Core (Poplar)
| Laps |
No |
| Voids |
One Max. 3.2mm wide in single layer, Not visible on the face |
| End Splits |
Four Max. 3.2mm x 102mm, Not visible on the face |
| Number of Components |
Max. 5 color matched |
| Width of Core Components |
Min. 152mm machine spliced |
| Uneven Core Thickness |
No |
※Crossband Grading of Base Panel
| Burl |
Permitted provided completely smooth (no torn grain) |
| Sound and Pin Knot |
Permitted if sanded smooth |
| Knot hole, Worm track & Wormholes |
Permitted if filled and sanded smooth: Max. Diam. 1/2”(12.7mm)
No sunken putty. |
| Vine streak, Stain mineral streak |
Permitted provide that it is sound and smooth. |
| Bark and Pitch Pocket |
Not allowed |
| Splits Puttied |
1/4”(6.35mm) wide tapering to a point and up to 24”(610mm) long maximum four per panel |
| Face Patch |
Not allowed |
| Shims |
Not allowed |
| Putty smears |
Permitted if sanded smooth |
| Edge glue face joints |
Permitted |
Overlay SSB Grade for Back Face (Okoume)
| Live Knots |
50.8mm Max. Diam. |
| Dead Knots |
Well puttied & color matched |
| Knotholes |
19mm Max. Diam. Puttied & color matched |
| Burls |
Yes, Smooth |
| Color Variation |
Yes |
| Stain & Mineral Streak |
Yes |
| Dry Pitch & Bark Pockets |
Well puttied & Color matched |
| Wormholes, pinholes |
11 per 1M2, 32 per 1220 x 2440. 1.6mm max. diam, Puttied |
| Worm tracks |
Filled linear hole 15.9mm Max. well puttied |
| Vane Marks |
Sanded, Smooth |
| Cross Breaks |
Hairline 102mm Max. length |
| Doze |
Firm, Slight, well Puttied, Blending |
※Note: Base Panel is use for the manufacturing of Film Faced Plywood, Overlay Grade is almost same as BB/CC Grade but permitted blending/inconspicuous streaks or chatter marks or color variation.
Boat or large symmetrical patches, open bark pockets, bark, wet pitch, grease, oil or colored chalk, mechanical defects and press marks not allowed on both sides.
Manufacturing Standard (Both Overlay Face & Back Veneer)
| Joint | Not allowed |
|---|
| Wrinkles & Delaminating | Not allowed. |
|---|
| Open Splits | Hair line, 302mm Max. on Panel Ends Only |
|---|
| Filled or Puttied Splits | There are at each ends, Color Matched |
|---|
| Fill & Putty Smear | Color Matched |
|---|
| Rough Cut& Ruptured Grain | Sanded, Smooth |
|---|
| Knife Marks | Smooth |
|---|
| Tape & Glue Residue | Sanded, Smooth |
|---|
| Sanding | Both Sanded |
|---|
Physical Standard
| Moisture Contents | Less than 12% |
|---|
| Adhesion | Resistant 2 hours boiling & 3 hours drying at 60°C |
|---|
| Thickness Tolerance | ±0.5mm |
|---|
| Allowance in Width & Length | ±2.0mm |
|---|
| Diagonal Allowance | Max. 3.0mm |
|---|
| Warp |
0.1% (1.22mm against 1220mm wide, 2.44mm against 2440mm long) |
|---|