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MH-OSB
MINGHUNG
Ⅰ.Oriented Strand Board
OSB (Oriented Strand Board, literally meaning "oriented structural board") is a multi-layered structural board made by applying adhesives and additives to flat and narrow wood chips, then arranging them in a specific direction and subjecting them to heat pressing. Due to the fact that many wood chips are stacked layer upon layer in a cross-like pattern, it possesses extremely high strength. OSB is widely regarded as the fastest-growing, most vigorous and most technologically mature type of board.
Structure & Composition
Surface layer: Long strands aligned parallel for bending resistance
Core layer: Short strands cross-randomized for shear stiffness
Resins: PF for surfaces, MDI for core (8-12% content)
Density: 650-680 kg/m³ (higher than particleboard)
production process
Ⅱ. Continuous Flat Press
1. Equipment Overview
Core Function: To transform loosely formed, pre-pressed OSB mats into solid panels by applying precisely controlled high temperature and high pressure while the mat moves continuously. This process cures the thermosetting resin (typically PMDI or phenolic) binding the wood strands, resulting in OSB panels with specified thickness, density, mechanical properties, and dimensional stability.
Core Characteristics:
Continuous Operation: Unlike batch presses (which press one panel at a time), continuous flat presses operate uninterruptedly, achieving extremely high production efficiency suitable for large-scale industrial manufacturing.
Flat Pressing: Pressure is applied uniformly to the top and bottom surfaces of the mat via two massive heated platens, producing smooth, flat panel surfaces.
High Pressure & High Temperature: Provides the immense pressure and heat required for OSB curing.
Precise Control: Enables highly accurate zoned control of pressure, temperature, and time (indirectly controlled via press speed), ensuring uniform and stable panel quality.
2. Working Principle
(1) Feeding: Pre-formed, pre-pressed, and trimmed OSB mats are fed continuously into the press inlet by an infeed conveyor (typically a steel belt or roller table).
(2) Inlet Closing: As the mat enters the press inlet, the upper platen, driven by a powerful hydraulic system, gradually closes down from its maximum opening height, applying initial pressure to the mat.
(3) Continuous Pressing:
Steel Belt Conveyance: The mat is sandwiched between two endless, high-temperature resistant steel belts. These belts are driven by powered drums and slide continuously over the surface of the heated platens.
Pressure Transfer: Massive hydraulic cylinders drive the upper platen downward. Pressure is transferred uniformly across the entire mat width and length via the steel belts.
Heat Transfer: The platens contain complex internal channels circulating high-temperature heat transfer oil (most common) or high-pressure steam. Heat is transferred from the platens to the steel belts and then conducted into the mat.
(4) Curing Process: Under high temperature and pressure:
The mat is compressed to the target thickness.
Moisture within the mat rapidly evaporates (generating significant steam that must be properly vented).
The thermosetting resin (PMDI or phenolic) applied to the strands melts, flows, and penetrates the wood fibers.
Under sustained high temperature, the resin undergoes cross-linking (curing), firmly bonding the wood strands together.
The density profile through the panel thickness is optimized (typically higher density surface layers and lower density core, achieved via zoned pressure control).
(5) Pressure Release & Discharge:
As the mat reaches the press outlet zone, the hydraulic system gradually raises the upper platen, releasing pressure step-by-step. This controlled decompression is critical to prevent panel delamination or blistering (known as "steam explosion").
The fully cured OSB panel (now called a "green board") is discharged from the press outlet and transported away by the discharge conveyor for subsequent cooling, trimming, sanding, etc.
(6) Steel Belt Circulation: After discharging the pressed panel, the two steel belts loop around turning drums at each end of the press and return to the inlet to grip the next mat, starting a new pressing cycle.
3.Core Structure and Composition
Hot press plate system: Composed of multiple heating plates, the interior is heated by heat transfer oil or steam to provide uniform temperature.
Steel belt system: Two circulating steel belts (upper and lower) hold the slabs and run continuously to ensure uniform pressure transmission.
Hydraulic system: Pressure is applied through hydraulic cylinders, and the pressing force in different areas can be adjusted in sections.
Control system: PLC or computer control, real-time monitoring of parameters such as temperature, pressure and speed.
Auxiliary equipment: includes paving machines, pre-pressing machines, cooling sections, sawing systems, etc.
Ⅲ.Dual-Channel Cooling System
1. Dual-Channel Design
Internal Cooling: Embedded cooling pipes inside press plates circulate cold water to absorb core heat.
External Cooling: Forced air or water spray rapidly reduces surface temperature.
This synergy eliminates stress deformation caused by uneven cooling ("hot core, cold surface").
2. Rapid Stabilization Mechanism
Post-pressing (160-200℃), the system cools panels to <50℃ within 60-90 seconds.
Resin fully cures during this phase, locking the board structure.
40% faster cooling prevents thickness rebound (precision: ±0.1mm).
3. Technical Advantages
Energy Saving: 15-20% reduced consumption via waste heat recovery (e.g., pre-heating boiler water).
Efficiency: 30% faster line speed and shorter cycle time.
Quality: Prevents internal cracks, boosts MOR (Modulus of Rupture) by 10-15%.
2007-2010
2007 -Our factory started to manufacture the full sets of OSB、PB、MDF Production line.
2013
Shandong Hungyou intelligent Equipment Industry ResearchCo..Ltd established, for plywood machinery and OSB、PB、MDF machinery research and development.The main research direction is to realize the automation of Plywood machinery.
2015
Linyi Ming Hung Trade Co.,Ltd established, the development focus has began to Foreignmarket, to service more foreign customers.
2017
Our High-end brand -ShandongMinghung OSB&MDF Machinery Equipment Manufacturing Co..Ltd established, mainly for foreign customers make the whole plant planning and design,achieve comprehensive high-end automation.
2018
Our High-end brand -Shandong MingHung Wood Machinery Co..Ltd established, mainly for foreign customers make the whole plant planning and design,achieve comprehensive high-end automation.
2022
Our factory's overseas business achieved significant growth,shipped machines to many different countriesl,ike America,Mexico,Columbia,Russia,Indonesia,Vietnam,Malaysia,Thailand,Egypt, TurkishUkraine, Romania, Portugal, Africaand others.
2024
We continue to adhere to the strategy of going global,to become one World brand.
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
Ⅰ.Oriented Strand Board
OSB (Oriented Strand Board, literally meaning "oriented structural board") is a multi-layered structural board made by applying adhesives and additives to flat and narrow wood chips, then arranging them in a specific direction and subjecting them to heat pressing. Due to the fact that many wood chips are stacked layer upon layer in a cross-like pattern, it possesses extremely high strength. OSB is widely regarded as the fastest-growing, most vigorous and most technologically mature type of board.
Structure & Composition
Surface layer: Long strands aligned parallel for bending resistance
Core layer: Short strands cross-randomized for shear stiffness
Resins: PF for surfaces, MDI for core (8-12% content)
Density: 650-680 kg/m³ (higher than particleboard)
production process
Ⅱ. Continuous Flat Press
1. Equipment Overview
Core Function: To transform loosely formed, pre-pressed OSB mats into solid panels by applying precisely controlled high temperature and high pressure while the mat moves continuously. This process cures the thermosetting resin (typically PMDI or phenolic) binding the wood strands, resulting in OSB panels with specified thickness, density, mechanical properties, and dimensional stability.
Core Characteristics:
Continuous Operation: Unlike batch presses (which press one panel at a time), continuous flat presses operate uninterruptedly, achieving extremely high production efficiency suitable for large-scale industrial manufacturing.
Flat Pressing: Pressure is applied uniformly to the top and bottom surfaces of the mat via two massive heated platens, producing smooth, flat panel surfaces.
High Pressure & High Temperature: Provides the immense pressure and heat required for OSB curing.
Precise Control: Enables highly accurate zoned control of pressure, temperature, and time (indirectly controlled via press speed), ensuring uniform and stable panel quality.
2. Working Principle
(1) Feeding: Pre-formed, pre-pressed, and trimmed OSB mats are fed continuously into the press inlet by an infeed conveyor (typically a steel belt or roller table).
(2) Inlet Closing: As the mat enters the press inlet, the upper platen, driven by a powerful hydraulic system, gradually closes down from its maximum opening height, applying initial pressure to the mat.
(3) Continuous Pressing:
Steel Belt Conveyance: The mat is sandwiched between two endless, high-temperature resistant steel belts. These belts are driven by powered drums and slide continuously over the surface of the heated platens.
Pressure Transfer: Massive hydraulic cylinders drive the upper platen downward. Pressure is transferred uniformly across the entire mat width and length via the steel belts.
Heat Transfer: The platens contain complex internal channels circulating high-temperature heat transfer oil (most common) or high-pressure steam. Heat is transferred from the platens to the steel belts and then conducted into the mat.
(4) Curing Process: Under high temperature and pressure:
The mat is compressed to the target thickness.
Moisture within the mat rapidly evaporates (generating significant steam that must be properly vented).
The thermosetting resin (PMDI or phenolic) applied to the strands melts, flows, and penetrates the wood fibers.
Under sustained high temperature, the resin undergoes cross-linking (curing), firmly bonding the wood strands together.
The density profile through the panel thickness is optimized (typically higher density surface layers and lower density core, achieved via zoned pressure control).
(5) Pressure Release & Discharge:
As the mat reaches the press outlet zone, the hydraulic system gradually raises the upper platen, releasing pressure step-by-step. This controlled decompression is critical to prevent panel delamination or blistering (known as "steam explosion").
The fully cured OSB panel (now called a "green board") is discharged from the press outlet and transported away by the discharge conveyor for subsequent cooling, trimming, sanding, etc.
(6) Steel Belt Circulation: After discharging the pressed panel, the two steel belts loop around turning drums at each end of the press and return to the inlet to grip the next mat, starting a new pressing cycle.
3.Core Structure and Composition
Hot press plate system: Composed of multiple heating plates, the interior is heated by heat transfer oil or steam to provide uniform temperature.
Steel belt system: Two circulating steel belts (upper and lower) hold the slabs and run continuously to ensure uniform pressure transmission.
Hydraulic system: Pressure is applied through hydraulic cylinders, and the pressing force in different areas can be adjusted in sections.
Control system: PLC or computer control, real-time monitoring of parameters such as temperature, pressure and speed.
Auxiliary equipment: includes paving machines, pre-pressing machines, cooling sections, sawing systems, etc.
Ⅲ.Dual-Channel Cooling System
1. Dual-Channel Design
Internal Cooling: Embedded cooling pipes inside press plates circulate cold water to absorb core heat.
External Cooling: Forced air or water spray rapidly reduces surface temperature.
This synergy eliminates stress deformation caused by uneven cooling ("hot core, cold surface").
2. Rapid Stabilization Mechanism
Post-pressing (160-200℃), the system cools panels to <50℃ within 60-90 seconds.
Resin fully cures during this phase, locking the board structure.
40% faster cooling prevents thickness rebound (precision: ±0.1mm).
3. Technical Advantages
Energy Saving: 15-20% reduced consumption via waste heat recovery (e.g., pre-heating boiler water).
Efficiency: 30% faster line speed and shorter cycle time.
Quality: Prevents internal cracks, boosts MOR (Modulus of Rupture) by 10-15%.
2007-2010
2007 -Our factory started to manufacture the full sets of OSB、PB、MDF Production line.
2013
Shandong Hungyou intelligent Equipment Industry ResearchCo..Ltd established, for plywood machinery and OSB、PB、MDF machinery research and development.The main research direction is to realize the automation of Plywood machinery.
2015
Linyi Ming Hung Trade Co.,Ltd established, the development focus has began to Foreignmarket, to service more foreign customers.
2017
Our High-end brand -ShandongMinghung OSB&MDF Machinery Equipment Manufacturing Co..Ltd established, mainly for foreign customers make the whole plant planning and design,achieve comprehensive high-end automation.
2018
Our High-end brand -Shandong MingHung Wood Machinery Co..Ltd established, mainly for foreign customers make the whole plant planning and design,achieve comprehensive high-end automation.
2022
Our factory's overseas business achieved significant growth,shipped machines to many different countriesl,ike America,Mexico,Columbia,Russia,Indonesia,Vietnam,Malaysia,Thailand,Egypt, TurkishUkraine, Romania, Portugal, Africaand others.
2024
We continue to adhere to the strategy of going global,to become one World brand.
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
