MH-CHP
MINGHUNG
Concept: "Modular" refers to the design philosophy and construction approach of this hot press. It decomposes the entire large and complex continuous flat-press system into multiple functional "modules" that are relatively independent and structurally standardized.
Manifestation:
Functional Modules: The equipment may consist of independent modules such as an infeed section module, preheating section module, multiple main hot-pressing section modules (each containing heating platens, hydraulic cylinders, frames, etc.), cooling section module, outfeed section module, hydraulic power unit module, and control system module.
Structural Units: The main press frame itself may also adopt a modular design, for example, being composed of multiple standard-sized, connectable "press frame modules." Each frame module supports a certain number of heating platens and their corresponding hydraulic cylinders.
steel frame
hydraulic pressure station
hoting board
siemens PLC
Advantages:
Flexibility & Scalability: Users can easily add or remove hot-pressing section modules to adjust press length, thereby modifying heating time and pressure distribution profiles based on actual production needs (e.g., product specifications, capacity requirements). Infeed, preheating, and cooling modules can also be configured as needed.
Manufacturing & Transport: Large equipment can be manufactured, tested, and transported in modules to the site for assembly, reducing manufacturing complexity and transportation constraints.
Installation & Maintenance: On-site installation is more convenient, and commissioning can be performed module-by-module. For future maintenance, specific faulty modules can be targeted for repair or replacement, minimizing downtime.
Upgrades & Retrofits: Future needs for increased capacity or process changes can be met by adding or replacing modules, offering more flexible investment.
Concept: "Customized" means the equipment manufacturer does not provide completely standardized off-the-shelf products. Instead, the machine is designed and manufactured personally based on the client's specific production requirements, process demands, site conditions, and budget constraints.
Aspects of Customization:
Core Parameter Customization: This directly addresses the specified 50MPa maximum working pressure and 280°C maximum working temperature. These parameters are determined by the specific materials the client needs to process (e.g., certain ultra-high-density composites, specialty prepregs, ceramic matrix precursors) and their required process conditions, far exceeding those used in conventional wood-based panel production.
Size & Capacity Customization: The width of the heating platens, effective press length (achieved by varying the number of modules), and production line speed are tailored to the client's target product dimensions and annual output requirements.
Pressure & Temperature Profile Customization: The design of the pressure system (layout of hydraulic cylinders, zonal pressure control) and heating system (zonal heating platen control, temperature control precision) must meet the client's specific process requirements for pressure gradients and temperature distribution curves.
Control System Customization: The human-machine interface (HMI), level of automation (e.g., automatic infeed, online thickness monitoring with feedback control), data acquisition and storage, recipe management, and safety interlock logic are customized to accommodate the client's operational habits and intelligence requirements.
Material & Compatibility Customization: Material selection for parts contacting the product (e.g., steel belts, heating platen surface treatment) considers properties like wear resistance, corrosion resistance, and anti-stick characteristics to suit specific materials. Cooling methods (e.g., air, water) may also be customized.
Auxiliary System Customization: Integration of specific auxiliary systems like specialized forming stations, caul plate circulation systems, or exhaust gas treatment systems, based on upstream/downstream processes and environmental requirements.
Interface & Layout Customization: Custom design of interfaces for connecting the equipment to upstream and downstream production lines, as well as the overall equipment layout planning within the client's factory.
Continuous flat-press hot presses are primarily used for the continuous production of wood-based panels (e.g., particleboard, Medium Density Fiberboard - MDF, High Density Fiberboard - HDF, Oriented Strand Board - OSB).
continuous hot press
MDF OSB PB continuous hot press
In this mainstream application, the typical working pressure range is generally between 5 MPa and 10 MPa (approximately 50 bar to 100 bar).
The specific pressure value depends on:
Panel Type: HDF typically requires higher pressure than MDF.
Target Density: Higher density requirements necessitate greater pressure.
Raw Material Characteristics: Such as particle/fiber geometry, moisture content, resin application rate.
Hot-pressing temperature and time.
Pressure Control System: Continuous flat-presses typically feature zonal pressure control systems, allowing different pressure levels to be applied along the length of the panel path to optimize mat compression and resin curing.
Far Exceeds Conventional: A pressure of 50 MPa (approximately 500 bar) is extremely high for a continuous flat-press hot press, significantly surpassing the typical 5-10 MPa range used in wood-based panel production mentioned above.
Level Classification: This falls into the ultra-high pressure category. Continuous flat-presses capable of achieving this pressure level are highly specialized and not standard configurations.
Application Scenarios: Such high pressure is required for producing ultra-high-density, high-performance composites. Examples include:
Certain specialty engineered wood composites (e.g., densified wood-based materials).
Ultra-high-density polymer-matrix or inorganic-matrix composites reinforced with wood fibers or other natural fibers.
High-pressure curing of certain prepregs.
Potential applications in non-wood fields like powder metallurgy or specialty ceramic forming (though batch presses are more common here).
Technical Requirements: Achieving 50MPa continuous pressure demands an extremely robust frame structure (thick steel plates, special frame design), high-power, high-precision hydraulic systems, bearings and guides capable of withstanding ultra-high loads, and specialized ultra-high-pressure sealing technology.
5.1 Temperature Zone Design
（1）Preheating Zone:
The mat entering the press is initially at a low temperature (near room temperature).
This zone is set to a relatively lower temperature (typically 120°C–160°C) to prevent premature surface resin curing or steam explosion causing delamination.
Primary function: Gently raises the overall mat temperature and removes some moisture, preparing it for subsequent high-temperature curing.
（2） Heating/Main Curing Zone:
This is the core processing area where temperature rises to the peak value (e.g., 280°C).
Depending on the resin cure characteristics, it may be subdivided into multiple heating stages (e.g., 180°C → 220°C → 260°C → 280°C).
Function: Provides sufficient thermal energy to activate resin crosslinking (curing), achieving material densification and strength development.
（3） Holding Zone:
After reaching the target peak temperature (e.g., 280°C), a constant temperature zone may be established.
Function: Ensures the core temperature of the material reaches the required level, guaranteeing thorough and uniform resin curing, especially critical for thick panels or materials with high thermal resistance.
（4）Cooling Zone:
After curing is complete, the temperature undergoes a controlled decline (e.g., 280°C → 200°C → 150°C).
Function: Controls the cooling rate to prevent panel warping, cracking, or "blistering" caused by thermal stress.
Method: Achieved by reducing thermal oil supply and activating cooling systems (internal cooling channels or external air/water cooling).
5.2 Core Logic of Temperature Variation
Matching Resin Cure Kinetics: The temperature profile must strictly align with the cure reaction window of the specific resin used (e.g., PF, MDI, or specialty high-temperature resins). Too rapid a heating rate can cause surface overcure while the core remains uncured; too slow reduces production efficiency.
Heat Transfer Balance: The mat is a poor heat conductor. The temperature profile must ensure effective heat transfer from the surface to the core, preventing an "overcured surface and undercured core" scenario. Thicker panels typically require gentler heating slopes and/or longer holding times.
Moisture Management: Gentle initial heating facilitates gradual moisture evaporation and escape. Rapid curing in the high-temperature zone locks in residual moisture, preventing later vaporization that could damage the structure.
Stress Control: A gradual cooling slope minimizes internal stresses caused by uneven thermal contraction, ensuring dimensional stability of the panel.
5.3 Special Control Points for 280°C High Temperature
Precise Zoning: 280°C is typically applied only in the mid-to-late sections of the main curing zone and the holding zone, not maintained throughout the entire process. A stepped increase is needed upstream, and a controlled decline is essential downstream.
High-Temperature Uniformity: At 280°C, exceptional temperature uniformity across the heating platens is critical (usually requiring control within ±2-3°C) to prevent localized over-curing or under-curing.
Steel Belt Cooling Protection: Enhanced cooling of the steel belt is necessary in high-temperature zones to prevent thermal distortion, oxidative failure, and sticking.
Thermal Efficiency & Insulation: Thermal oil circulation efficiency must be optimized, and the press frame requires effective insulation to minimize heat loss and protect equipment.
Shandong MingHung OSB&MDF Machinery Equipment is a China professional factory who specilize in manufacturering and offering Wood based panel machine, including OSB making machine, MDF making machine, and Chipboard /PB making machine.
Our factory with the advanced processing lathes, Mature production technology, and Professional engineers and technicians, and independent ability of reasearch and development, and quickly service, ensure that we have the ability to offer you the suitable and good woodworking machinery as different conditions and requires.
Pre-sales service:
1) Listen to customer needs
2) Provide preliminary machine design and flow chart for free, select and provide the most reasonable configuration equipment:
3) Support remote meetings and remote factory visits;
4) Provide professional advice to customers and confirm the final selection
5) Support on-site factory visits;
On-purchase service:
1) All equipment must be installed and debugged before leaving the factory, and remote video quality inspection is supported;
2) All machines must be unpacked before leaving the factory, and photos, videos, and annotations must be provided;
3) Free online or offline training for buyers' operators (domestic)
4) Assist buyers in installing and debugging equipment (overseas)
After-sales service:
1) 7*24 hours online service, remote real-time video solution;
2) During the first installation and debugging process, problems encountered during normal operation are solved in time:
3) Regular process inspection and use effect, timely machine maintenance suggestions:
4) Lifetime free technical guidance
5) Timely update the latest industry information.
For more information, welcome contact us, we will reply you quickly and offer working videos with you!
+86 18769900191, +86 15805496117, +86 18954906501
Concept: "Modular" refers to the design philosophy and construction approach of this hot press. It decomposes the entire large and complex continuous flat-press system into multiple functional "modules" that are relatively independent and structurally standardized.
Manifestation:
Functional Modules: The equipment may consist of independent modules such as an infeed section module, preheating section module, multiple main hot-pressing section modules (each containing heating platens, hydraulic cylinders, frames, etc.), cooling section module, outfeed section module, hydraulic power unit module, and control system module.
Structural Units: The main press frame itself may also adopt a modular design, for example, being composed of multiple standard-sized, connectable "press frame modules." Each frame module supports a certain number of heating platens and their corresponding hydraulic cylinders.
steel frame
hydraulic pressure station
hoting board
siemens PLC
Advantages:
Flexibility & Scalability: Users can easily add or remove hot-pressing section modules to adjust press length, thereby modifying heating time and pressure distribution profiles based on actual production needs (e.g., product specifications, capacity requirements). Infeed, preheating, and cooling modules can also be configured as needed.
Manufacturing & Transport: Large equipment can be manufactured, tested, and transported in modules to the site for assembly, reducing manufacturing complexity and transportation constraints.
Installation & Maintenance: On-site installation is more convenient, and commissioning can be performed module-by-module. For future maintenance, specific faulty modules can be targeted for repair or replacement, minimizing downtime.
Upgrades & Retrofits: Future needs for increased capacity or process changes can be met by adding or replacing modules, offering more flexible investment.
Concept: "Customized" means the equipment manufacturer does not provide completely standardized off-the-shelf products. Instead, the machine is designed and manufactured personally based on the client's specific production requirements, process demands, site conditions, and budget constraints.
Aspects of Customization:
Core Parameter Customization: This directly addresses the specified 50MPa maximum working pressure and 280°C maximum working temperature. These parameters are determined by the specific materials the client needs to process (e.g., certain ultra-high-density composites, specialty prepregs, ceramic matrix precursors) and their required process conditions, far exceeding those used in conventional wood-based panel production.
Size & Capacity Customization: The width of the heating platens, effective press length (achieved by varying the number of modules), and production line speed are tailored to the client's target product dimensions and annual output requirements.
Pressure & Temperature Profile Customization: The design of the pressure system (layout of hydraulic cylinders, zonal pressure control) and heating system (zonal heating platen control, temperature control precision) must meet the client's specific process requirements for pressure gradients and temperature distribution curves.
Control System Customization: The human-machine interface (HMI), level of automation (e.g., automatic infeed, online thickness monitoring with feedback control), data acquisition and storage, recipe management, and safety interlock logic are customized to accommodate the client's operational habits and intelligence requirements.
Material & Compatibility Customization: Material selection for parts contacting the product (e.g., steel belts, heating platen surface treatment) considers properties like wear resistance, corrosion resistance, and anti-stick characteristics to suit specific materials. Cooling methods (e.g., air, water) may also be customized.
Auxiliary System Customization: Integration of specific auxiliary systems like specialized forming stations, caul plate circulation systems, or exhaust gas treatment systems, based on upstream/downstream processes and environmental requirements.
Interface & Layout Customization: Custom design of interfaces for connecting the equipment to upstream and downstream production lines, as well as the overall equipment layout planning within the client's factory.
Continuous flat-press hot presses are primarily used for the continuous production of wood-based panels (e.g., particleboard, Medium Density Fiberboard - MDF, High Density Fiberboard - HDF, Oriented Strand Board - OSB).
continuous hot press
MDF OSB PB continuous hot press
In this mainstream application, the typical working pressure range is generally between 5 MPa and 10 MPa (approximately 50 bar to 100 bar).
The specific pressure value depends on:
Panel Type: HDF typically requires higher pressure than MDF.
Target Density: Higher density requirements necessitate greater pressure.
Raw Material Characteristics: Such as particle/fiber geometry, moisture content, resin application rate.
Hot-pressing temperature and time.
Pressure Control System: Continuous flat-presses typically feature zonal pressure control systems, allowing different pressure levels to be applied along the length of the panel path to optimize mat compression and resin curing.
Far Exceeds Conventional: A pressure of 50 MPa (approximately 500 bar) is extremely high for a continuous flat-press hot press, significantly surpassing the typical 5-10 MPa range used in wood-based panel production mentioned above.
Level Classification: This falls into the ultra-high pressure category. Continuous flat-presses capable of achieving this pressure level are highly specialized and not standard configurations.
Application Scenarios: Such high pressure is required for producing ultra-high-density, high-performance composites. Examples include:
Certain specialty engineered wood composites (e.g., densified wood-based materials).
Ultra-high-density polymer-matrix or inorganic-matrix composites reinforced with wood fibers or other natural fibers.
High-pressure curing of certain prepregs.
Potential applications in non-wood fields like powder metallurgy or specialty ceramic forming (though batch presses are more common here).
Technical Requirements: Achieving 50MPa continuous pressure demands an extremely robust frame structure (thick steel plates, special frame design), high-power, high-precision hydraulic systems, bearings and guides capable of withstanding ultra-high loads, and specialized ultra-high-pressure sealing technology.
5.1 Temperature Zone Design
（1）Preheating Zone:
The mat entering the press is initially at a low temperature (near room temperature).
This zone is set to a relatively lower temperature (typically 120°C–160°C) to prevent premature surface resin curing or steam explosion causing delamination.
Primary function: Gently raises the overall mat temperature and removes some moisture, preparing it for subsequent high-temperature curing.
（2） Heating/Main Curing Zone:
This is the core processing area where temperature rises to the peak value (e.g., 280°C).
Depending on the resin cure characteristics, it may be subdivided into multiple heating stages (e.g., 180°C → 220°C → 260°C → 280°C).
Function: Provides sufficient thermal energy to activate resin crosslinking (curing), achieving material densification and strength development.
（3） Holding Zone:
After reaching the target peak temperature (e.g., 280°C), a constant temperature zone may be established.
Function: Ensures the core temperature of the material reaches the required level, guaranteeing thorough and uniform resin curing, especially critical for thick panels or materials with high thermal resistance.
（4）Cooling Zone:
After curing is complete, the temperature undergoes a controlled decline (e.g., 280°C → 200°C → 150°C).
Function: Controls the cooling rate to prevent panel warping, cracking, or "blistering" caused by thermal stress.
Method: Achieved by reducing thermal oil supply and activating cooling systems (internal cooling channels or external air/water cooling).
5.2 Core Logic of Temperature Variation
Matching Resin Cure Kinetics: The temperature profile must strictly align with the cure reaction window of the specific resin used (e.g., PF, MDI, or specialty high-temperature resins). Too rapid a heating rate can cause surface overcure while the core remains uncured; too slow reduces production efficiency.
Heat Transfer Balance: The mat is a poor heat conductor. The temperature profile must ensure effective heat transfer from the surface to the core, preventing an "overcured surface and undercured core" scenario. Thicker panels typically require gentler heating slopes and/or longer holding times.
Moisture Management: Gentle initial heating facilitates gradual moisture evaporation and escape. Rapid curing in the high-temperature zone locks in residual moisture, preventing later vaporization that could damage the structure.
Stress Control: A gradual cooling slope minimizes internal stresses caused by uneven thermal contraction, ensuring dimensional stability of the panel.
5.3 Special Control Points for 280°C High Temperature
Precise Zoning: 280°C is typically applied only in the mid-to-late sections of the main curing zone and the holding zone, not maintained throughout the entire process. A stepped increase is needed upstream, and a controlled decline is essential downstream.
High-Temperature Uniformity: At 280°C, exceptional temperature uniformity across the heating platens is critical (usually requiring control within ±2-3°C) to prevent localized over-curing or under-curing.
Steel Belt Cooling Protection: Enhanced cooling of the steel belt is necessary in high-temperature zones to prevent thermal distortion, oxidative failure, and sticking.
Thermal Efficiency & Insulation: Thermal oil circulation efficiency must be optimized, and the press frame requires effective insulation to minimize heat loss and protect equipment.
Shandong MingHung OSB&MDF Machinery Equipment is a China professional factory who specilize in manufacturering and offering Wood based panel machine, including OSB making machine, MDF making machine, and Chipboard /PB making machine.
Our factory with the advanced processing lathes, Mature production technology, and Professional engineers and technicians, and independent ability of reasearch and development, and quickly service, ensure that we have the ability to offer you the suitable and good woodworking machinery as different conditions and requires.
Pre-sales service:
1) Listen to customer needs
2) Provide preliminary machine design and flow chart for free, select and provide the most reasonable configuration equipment:
3) Support remote meetings and remote factory visits;
4) Provide professional advice to customers and confirm the final selection
5) Support on-site factory visits;
On-purchase service:
1) All equipment must be installed and debugged before leaving the factory, and remote video quality inspection is supported;
2) All machines must be unpacked before leaving the factory, and photos, videos, and annotations must be provided;
3) Free online or offline training for buyers' operators (domestic)
4) Assist buyers in installing and debugging equipment (overseas)
After-sales service:
1) 7*24 hours online service, remote real-time video solution;
2) During the first installation and debugging process, problems encountered during normal operation are solved in time:
3) Regular process inspection and use effect, timely machine maintenance suggestions:
4) Lifetime free technical guidance
5) Timely update the latest industry information.
For more information, welcome contact us, we will reply you quickly and offer working videos with you!
+86 18769900191, +86 15805496117, +86 18954906501
