FORMWORK PLYWOOD
Formwork plywood is made by putting a film coating on both sides following the WBP glue-assisted pressing of all the wood veneer plywood layers. As a result, the board has a smooth, shiny, and durable surface that can be used in construction. The most common types of wood are eucalyptus, rubber wood, and acacia.
➦ Technical specifications:
- Size: 1220*2440 mm (4*8 ft)
- Thickness: 12mm up to 18mm
- Thickness tolerances: ± 0.5mm
- Glue: 100% WBP (Water Boiled Proof) – Phenolic
- Reuse: ≥ 10 times
- Film: Stora enso, brown
- Screw holding force: 148.0 N/mm2.
- Moisture absorption: 9.7%.
- Swelling of the thickness soaked in water for 24 hours: 2.1%.
- The force of pressing the board: about 100 – 120 tons/m2.
- Usage: For construction formwork
➦ Composition:
There are mainly two kinds of glue:
- WBP glue (Water Boiled Proof) has water-resistant, is suitable for use outdoors in humid environments without delamilation. WBP melamine and WBP phenolic glue boards are common types.
- Moisure Resistant glue, often known as MR glue, is frequently used inside due to its moisture-proof qualities and suitability for low-humidity conditions.
- The covering, which serves to generate smoothness, lessen scratches, and protect the board while in use, is made of water-resistant phenolic bonded paper.
- The hardness, longevity, and bearing capacity of plywood are all determined by its core.
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