MH-OSB500
MINGHUNG
846596
 | OSB (Oriented Strand Board) Introduction |
OSB is the abbreviation of Oriented Strand Board, usually called oriented strand board or oriented structural strand board in Chinese, is a kind of engineering wood board commonly used in construction and furniture manufacturing
Basic composition:
- Raw materials: Wood chips (usually pine, poplar and other fast-growing trees) and waterproof resin adhesive mixed pressed.
- Structural characteristics: The wood chips are arranged in a directional manner (the surface layer is longitudinal, the inner layer is transverse), and the high temperature and high pressure molding forms a high-strength multi-layer structure.
Main feature
- High strength: The directional arrangement of wood chips makes its bending and compressive properties better than ordinary particle board.
- Moisture resistance: Some models (such as OSB/3, OSB/4) are specially treated for use in humid environments.
- Economy: Lower price than plywood, but similar performance.
- Environmental protection: The use of fast-growing wood or scraps to reduce resource waste.
| How to make OSB panel? |
You need the full line of OSB board making machines, such as disc chipper, vibrating screen, drum dryer, resin apply machine, slab forming machine, continuous pre press, multi-opening hot press, auto edge cutting machine, sanding machine, heating energy these mainly equipment.
How each machine looks like and how each machine works? let us see one by one
By disc chipper to process bamboo to be required wood strands size
The Regular OSB strands size:
| Wood strands type | Length (mm) | Width (mm) | Thickness (mm) | Application |
| Surface strands | 75-150 | 15-30 | 0.4-0.6 | Improve surface smooth and strength |
| Core surrface | 50-100 | 10-25 | 0.5-0.8 | Enhand inside cohesion |
| Special longer strands | 150-200 | 20-40 | 0.6-1.0 | High strength structural panel (like roof panel) |
- Aspect ratio: Surface layer > 8:1, core layer > 5:1 (core index of directional paving)
- Thickness tolerance: ±0.05mm (requires laser thickness gauge control)
Cylindrical sieve mainly for screening certified flakes and wood chips, grading as the size of surface materials and core materials, also for remove the barks and other impurity
| Types | Working way | Suitable shavings size | Efficiency |
| Rotary screen | Rotate screening | Length 50-150mm | 8-10t/h |
| Air screen | Through air speed to control shavings fall down rountine | Thickness 0.3-10mm | 15t/h |
| Vibrating screen | Eccentric wheel to drive multi-layers screen | Screening accuracy ±2mm | 5t/h |
- Screen angle: 15°~25° (it affects the passing rate)
- Rotate speed: 20-35rpm (avoid blockage)
- Air pressure: seperating 800-1200Pa (Adjust as wood strands proportion)
Rotary drum dryer for drying wood strands and wood chips moisture, make their final moisture to be about 4% to be suitable for next osb production step. The suitable wood strands length is 50-150mm, and thickness 0.3-0.8mm, if the wood strands too thin, it will easy broken, if it is too thick, it will delay the drying time
Rotary dryer usually diameter 1.8-3.6m, length can be 12-25m, the capacity can be 5-30t/h.
Adhesive and resin applying for spray the glue on wood strands and wood chips evenly
Device structure:
- Flakes measuring unit:
- Belt scale (accuracy ±0.5%) or gravity hopper (capacity 2-5m³)
- Metal removal device (strong magnetic roller + metal detector)
- Adhesive System:
- Resin storage tank (with agitation and temperature control, usually maintained at 25±2 ° C)
- Curing agent/additive metering pump (proportional accuracy ±1%)
- Mixed Host:
- Two-axis paddle type (speed 120-180rpm, mixing time 30-60 seconds)
- Atomizing and spraying system (pressure 0.3-0.6MPa, nozzle diameter 0.8-1.2mm)
| Items | Regular range | Special requires |
| Adhesive consumption | Surace layers 8-12% Core layers 5-8% | Moisture-proof panel required increase 1-2% |
| Adhesive viscosity | 300-500cP(25℃) | MDI need heating to be 40 ℃ |
| Mixing uniformity | ＞95% | Infrared detector real-time monitoring |
Regular glue comparison:
| Adhesive types | Solid content | Applicable scene | Ad & Disadvantages |
| Phenolic resin | 45-50% | Outside OSB | Good weather resistance, but color dark |
| MDI | 100% | High moisture-proof panel | Non-formaldehyde, higher cost |
| Urea resin | 55-65% | Common inside panel | Low cost, need control formaldehyde release |
OSB paving /forming is not only a simple wood shavings accumulation, but through the systematic engineering of the most directional arrangement - density gradient - stress balance, to achieve a qualitative change from "shaver" to "structural material". Modern intelligent paving system can control the fluctuation of sheet performance within ±3%, which is the key technical support for OSB to replace some plywood
By arranging the surface strands in the long direction of the plate (within ±15°), the longitudinal static bending strength (MOR) of the plate is increased by 30-50%, and the elastic modulus (MOE) is increased by more than 40% (compared with random pavement)
The typical 3-layers structure (surface orientation + core layer random) makes the longitudinal/transverse strength ratio reach **1.5:1~2:1**, meeting the stress requirements of building structural materials. On the surface layers, Long planing (75-150mm) directional paving for provides strength; Core layer by Short planer (50-100mm) random paving for balance internal stress; Transition layer by Gradient mixed paving for prevents layering
The Function of Continuous pre-press mainly for (1) Preliminary compaction: Compress the fluffy paving slab (fluffy ratio 1:3.5~4.0) to **1:1.2~1.5** for easy access to the hot press; (2)Exhaust styling: Exhaust the air in the slab (reduce the risk of "shooting" during hot pressing) to make the planer initially bonded. (3)Strength increase: The bending strength of the slab after prepressing is up to 0.3-0.5MPa, which can withstand transport vibration
| Parameter | Rollers pre-press | Belt pre-press |
| Pressure | 5-8 bar | 2-4 bar |
| Compression ratio | 25-30% | 15-20% |
| Suitable products | Thick panel (18-40mm) | Thin panel (6-15mm) |
| Parameter | Standard range | Excessive effect | Detect method |
| Linear pressure | 80-120N/mm | Too high → Flakes broken | Pressure sensor on-line detection |
| Compress speed | 0.8-1.5m/min | Too fast → Insufficiency exhaust | Encoder test roller speed |
| Slab rebound | ＜5% thickness | Too big → Hot pressing density is uniform | Laser thickness gauge |
| Pre-press temperature | 40-60 ℃ | Too low → Adhesive is not permeable | infrared thermometer |
Now in the market, there mainly has two types hot press,, one is Multi-opening hot press, another one is single Continuous press. they have their own advantages
The function of Hot press is Through the synergistic action of high temperature and high pressure - adhesive curing - structural shaping, loose planed sheets are transformed into high-performance engineering sheets
For make Corrugated panel, as its size and waves shapes, we will make the mould for your hot press, and after pressed, it will be required corrugated roof panel size and shapes
Through trimming the edge of OSB and sanding its surface, make OSB size be same and thickness accurate.
With above machines, you can produce OSB corrugated panel from Bamboo and other wood raw materials
If you are interested to make this wooden based panel, welcome contact us for more information, we can offer you suitable and good quality machinery
| OSB (Oriented Strand Board) Introduction |
OSB is the abbreviation of Oriented Strand Board, usually called oriented strand board or oriented structural strand board in Chinese, is a kind of engineering wood board commonly used in construction and furniture manufacturing
Basic composition:
- Raw materials: Wood chips (usually pine, poplar and other fast-growing trees) and waterproof resin adhesive mixed pressed.
- Structural characteristics: The wood chips are arranged in a directional manner (the surface layer is longitudinal, the inner layer is transverse), and the high temperature and high pressure molding forms a high-strength multi-layer structure.
Main feature
- High strength: The directional arrangement of wood chips makes its bending and compressive properties better than ordinary particle board.
- Moisture resistance: Some models (such as OSB/3, OSB/4) are specially treated for use in humid environments.
- Economy: Lower price than plywood, but similar performance.
- Environmental protection: The use of fast-growing wood or scraps to reduce resource waste.
| How to make OSB panel? |
You need the full line of OSB board making machines, such as disc chipper, vibrating screen, drum dryer, resin apply machine, slab forming machine, continuous pre press, multi-opening hot press, auto edge cutting machine, sanding machine, heating energy these mainly equipment.
How each machine looks like and how each machine works? let us see one by one
By disc chipper to process bamboo to be required wood strands size
The Regular OSB strands size:
| Wood strands type | Length (mm) | Width (mm) | Thickness (mm) | Application |
| Surface strands | 75-150 | 15-30 | 0.4-0.6 | Improve surface smooth and strength |
| Core surrface | 50-100 | 10-25 | 0.5-0.8 | Enhand inside cohesion |
| Special longer strands | 150-200 | 20-40 | 0.6-1.0 | High strength structural panel (like roof panel) |
- Aspect ratio: Surface layer > 8:1, core layer > 5:1 (core index of directional paving)
- Thickness tolerance: ±0.05mm (requires laser thickness gauge control)
Cylindrical sieve mainly for screening certified flakes and wood chips, grading as the size of surface materials and core materials, also for remove the barks and other impurity
| Types | Working way | Suitable shavings size | Efficiency |
| Rotary screen | Rotate screening | Length 50-150mm | 8-10t/h |
| Air screen | Through air speed to control shavings fall down rountine | Thickness 0.3-10mm | 15t/h |
| Vibrating screen | Eccentric wheel to drive multi-layers screen | Screening accuracy ±2mm | 5t/h |
- Screen angle: 15°~25° (it affects the passing rate)
- Rotate speed: 20-35rpm (avoid blockage)
- Air pressure: seperating 800-1200Pa (Adjust as wood strands proportion)
Rotary drum dryer for drying wood strands and wood chips moisture, make their final moisture to be about 4% to be suitable for next osb production step. The suitable wood strands length is 50-150mm, and thickness 0.3-0.8mm, if the wood strands too thin, it will easy broken, if it is too thick, it will delay the drying time
Rotary dryer usually diameter 1.8-3.6m, length can be 12-25m, the capacity can be 5-30t/h.
Adhesive and resin applying for spray the glue on wood strands and wood chips evenly
Device structure:
- Flakes measuring unit:
- Belt scale (accuracy ±0.5%) or gravity hopper (capacity 2-5m³)
- Metal removal device (strong magnetic roller + metal detector)
- Adhesive System:
- Resin storage tank (with agitation and temperature control, usually maintained at 25±2 ° C)
- Curing agent/additive metering pump (proportional accuracy ±1%)
- Mixed Host:
- Two-axis paddle type (speed 120-180rpm, mixing time 30-60 seconds)
- Atomizing and spraying system (pressure 0.3-0.6MPa, nozzle diameter 0.8-1.2mm)
| Items | Regular range | Special requires |
| Adhesive consumption | Surace layers 8-12% Core layers 5-8% | Moisture-proof panel required increase 1-2% |
| Adhesive viscosity | 300-500cP(25℃) | MDI need heating to be 40 ℃ |
| Mixing uniformity | ＞95% | Infrared detector real-time monitoring |
Regular glue comparison:
| Adhesive types | Solid content | Applicable scene | Ad & Disadvantages |
| Phenolic resin | 45-50% | Outside OSB | Good weather resistance, but color dark |
| MDI | 100% | High moisture-proof panel | Non-formaldehyde, higher cost |
| Urea resin | 55-65% | Common inside panel | Low cost, need control formaldehyde release |
OSB paving /forming is not only a simple wood shavings accumulation, but through the systematic engineering of the most directional arrangement - density gradient - stress balance, to achieve a qualitative change from "shaver" to "structural material". Modern intelligent paving system can control the fluctuation of sheet performance within ±3%, which is the key technical support for OSB to replace some plywood
By arranging the surface strands in the long direction of the plate (within ±15°), the longitudinal static bending strength (MOR) of the plate is increased by 30-50%, and the elastic modulus (MOE) is increased by more than 40% (compared with random pavement)
The typical 3-layers structure (surface orientation + core layer random) makes the longitudinal/transverse strength ratio reach **1.5:1~2:1**, meeting the stress requirements of building structural materials. On the surface layers, Long planing (75-150mm) directional paving for provides strength; Core layer by Short planer (50-100mm) random paving for balance internal stress; Transition layer by Gradient mixed paving for prevents layering
The Function of Continuous pre-press mainly for (1) Preliminary compaction: Compress the fluffy paving slab (fluffy ratio 1:3.5~4.0) to **1:1.2~1.5** for easy access to the hot press; (2)Exhaust styling: Exhaust the air in the slab (reduce the risk of "shooting" during hot pressing) to make the planer initially bonded. (3)Strength increase: The bending strength of the slab after prepressing is up to 0.3-0.5MPa, which can withstand transport vibration
| Parameter | Rollers pre-press | Belt pre-press |
| Pressure | 5-8 bar | 2-4 bar |
| Compression ratio | 25-30% | 15-20% |
| Suitable products | Thick panel (18-40mm) | Thin panel (6-15mm) |
| Parameter | Standard range | Excessive effect | Detect method |
| Linear pressure | 80-120N/mm | Too high → Flakes broken | Pressure sensor on-line detection |
| Compress speed | 0.8-1.5m/min | Too fast → Insufficiency exhaust | Encoder test roller speed |
| Slab rebound | ＜5% thickness | Too big → Hot pressing density is uniform | Laser thickness gauge |
| Pre-press temperature | 40-60 ℃ | Too low → Adhesive is not permeable | infrared thermometer |
Now in the market, there mainly has two types hot press,, one is Multi-opening hot press, another one is single Continuous press. they have their own advantages
The function of Hot press is Through the synergistic action of high temperature and high pressure - adhesive curing - structural shaping, loose planed sheets are transformed into high-performance engineering sheets
For make Corrugated panel, as its size and waves shapes, we will make the mould for your hot press, and after pressed, it will be required corrugated roof panel size and shapes
Through trimming the edge of OSB and sanding its surface, make OSB size be same and thickness accurate.
With above machines, you can produce OSB corrugated panel from Bamboo and other wood raw materials
If you are interested to make this wooden based panel, welcome contact us for more information, we can offer you suitable and good quality machinery
