MH
MINGHUNG
The production of plywood is a complex systematic engineering process designed to transform raw logs into structurally stable panels of various sizes. The main steps are as follows:
1. Log Handling: Purchased logs (e.g., poplar) are cut into required bolt lengths and steamed/softened to facilitate better peeling.
2. Peeling & Drying: The softened bolts are fed into a veneer lathe, which rotates them against a blade to produce continuous thin veneer sheets. The wet veneer is then dried through a roller dryer to achieve a suitable moisture content (typically 8%-12%), preventing later cracking and warping.
3. Veneer Sorting & Patching: The dried veneer is sorted based on grade, size, and defects. Defective veneer sheets are patched using a patching machine to improve yield.
4. Gluing & Lay-up: Qualified veneer sheets are coated evenly with adhesive (e.g., Urea-Formaldehyde UF, Phenol-Formaldehyde PF) on their surfaces by a glue spreader (usually roller or curtain coater). The glued veneers (mainly for core layers) and unglued veneers (mainly for face/back layers) are assembled manually or automatically according to the designed number of plies and grain direction (adjacent layers are perpendicular to each other) to form a mat.
5. Pre-pressing & Hot Pressing: The assembled mat is first sent to a cold press or pre-press for initial shaping, expelling air and achieving preliminary bonding for easier handling. Subsequently, the mat is loaded into a multi-opening hot press. Under high temperature (typically 140-180°C) and high pressure (typically 10-20 MPa), the adhesive is rapidly cured, permanently bonding the veneers into a solid panel.
6. Post-processing: The pressed panels with rough edges are cooled, then trimmed to standard dimensions by double-end saws or cross-cutting saws. Depending on requirements, they are sanded to achieve a uniform smooth surface thickness, then graded and packaged.
Pre-treatment Equipment: Log cross-cut saw, debarker, steaming vat/pool.
cutting machine
log debarker
Peeling & Drying Equipment: CNC spindleless veneer lathe, roller veneer dryer.
veneer peeling machine
drying machine
Veneer Handling Equipment: Veneer stacker, veneer splicer/patcher, veneer sorting system.
Gluing & Lay-up Equipment: Roller glue spreader or curtain coater, automatic lay-up line, mat conveyor.
Forming & Pressing Equipment: Pre-press, multi-opening hot press (typically 15-30 openings), hydraulic system, heating system.
pre press machine
hot press machine
Finishing Equipment: Cooler and panel turnover device, cross-cutting and edge trimming saw, wide-belt sander (double-head or more), automatic stacker, packaging machine.
sawing machine
sander
stacking
Auxiliary Systems: Central electrical control system, dust collection system, thermal energy center (providing heat), glue preparation system.
1. Structure:
Plywood is a type of engineered wood panel made by bonding an odd number of thin wood veneers (e.g., 3-ply, 5-ply, 7-ply) with the grain of adjacent layers perpendicular to each other.
The outermost veneers are called face/back veneers, typically made from higher-quality wood with fewer defects. The front side is the face, and the back side is the back.
The inner veneers are called the core or cross-band veneers. The central layer is called the center core.
This cross-grain structure effectively counteracts the inherent anisotropy of wood, resulting in plywood having more uniform strength in all directions, better dimensional stability, and resistance to splitting and warping.
2. Materials:
Face/Back Veneer Materials: Typically hardwoods with attractive grain patterns, such as Eucalyptus, Okoume, Birch, Beech, Lauan, used for high-end furniture and decoration. Poplar veneer can also be used after color treatment.
Core Materials: Usually species that are abundant, economical, and easy to process. Poplar is one of the most common and ideal core materials. Other common core woods include eucalyptus, mixed hardwoods, and pine (requires resin removal treatment).
Adhesive: Chosen based on application and environmental requirements.
Interior Use: Urea-Formaldehyde (UF) resin is common, cost-effective, but has poor water resistance.
Exterior/Moisture Resistant Use: Phenol-Formaldehyde (PF) resin is used, which is dark-colored and offers strong water resistance and durability.
High Environmental Requirements: Formaldehyde-free adhesives are used, such as soy-based glue or MDI, to produce E0-level or NAF (No Added Formaldehyde) panels.
Poplar is one of the most important and popular core materials in the global plywood industry, offering significant advantages:
1. Abundant Resources & Stable Supply: Poplar has a short growth cycle and is widely cultivated in China, Europe, North America, etc., ensuring stable raw material supply and relatively economical prices.
2. Moderate Density, Lightweight with Good Strength: Poplar has a medium density, leaning towards softwood. This results in a lighter final plywood product, facilitating transportation and construction, while still providing sufficient strength and flexibility.
3. Light Color, Easy for Toning: The core wood of poplar is pale and uniform in color. It does not bleed through thin face veneers to affect the surface color, making it particularly suitable for light-colored or high-demand surface decoration.
4. Excellent Machinability: Poplar has a uniform texture and moderate fiber length, making it easy to peel, dry, and sand. The peeled veneer is smooth and flat with a low breakage rate.
5. Good Bonding Performance: The pore structure of poplar is suitable, offering good permeability and affinity for common adhesives (e.g., UF, PF), resulting in high bond strength and reduced risk of delamination.
6. High Structural Stability: Poplar has a relatively low shrinkage rate after drying and good compatibility with other materials. As a core layer, it effectively enhances the overall dimensional stability of the plywood, reducing warping and deformation.
Plywood is an extremely versatile engineered wood product valued for its high strength, dimensional stability, ease of fabrication, and cost-effectiveness. Its primary applications include:
1. Construction & Building
Concrete Formwork: One of the largest applications. Film-faced plywood (especially phenolic film-coated) provides a smooth, waterproof,and reusable mold for pouring concrete.
Structural Applications: Used for roof sheathing, wall sheathing, floor underlayment (subfloor), and shear walls/partitions in wood-frame construction, providing overall structural strength and stability.
Interior Decoration: Widely used for ceilings, wall paneling, partitions, stair treads, and cabinet liners. Often combined with decorative surfaces like HPL, wood veneer, or melamine-impregnated paper.
2. Furniture Manufacturing
Core Material: Plywood is a core material for panel furniture, kitchen cabinets, office furniture, wardrobes, and bed frames. It provides a sturdy skeleton, which is then laminated with various decorative surfaces.
Furniture Components: Used for furniture backs, shelves, drawer bottoms, chair seats, and backs. Bent plywood is also commonly used to create furniture with curved designs.
3. Packaging & Transportation
Export Packaging: Plywood crates (often called "plywood cases" or "non- fumigation wooden boxes") are strong, lightweight, and comply with international phytosanitary standards (ISPM-15), requiring no fumigation. They are widely used for packaging machinery, electronics, ceramics, and chemicals for export.
Pallets & Skids: Plywood pallets are lightweight, sturdy, and resistant to splitting, making them suitable for storage and logistics.
4. Vehicle Manufacturing
Shipbuilding: Marine-grade plywaterproof plywood (typically made with phenolic glue and high-quality durable veneers) is used for boat bulkheads, decks, interior paneling, and furniture.
Automotive & Railway: Used for flooring, interior wall panels, partitions, and fittings in trucks, buses, RVs, and railway carriages.
Aerospace: High-grade aircraft plywood is used in the construction of light aircraft wings, fuselage components, interior panels, and cargo flooring.
5. Other Specialized & Creative Applications
Flooring Underlayment: Serves as a base layer for laminate flooring and engineered flooring, providing a flat and solid foundation.
Advertising & Exhibition: Used for billboards, exhibition booths, display stands, and stage backdrops.
Agriculture & Aquaculture: Used for poultry houses, greenhouse structures, aquaculture pens, and fishing boat decks.
Musical Instrument Making: High-grade plywood is used for the backs, sides, and soundboards of instruments like guitars, violins, and pianos.
DIY & Creative Projects: Loved by hobbyists for its ease of cutting, sanding, and painting, it's used to make bookshelves, toys, models, and home decor items.
In summary, From high-strength structural engineering to precision furniture making, from harsh marine environments to everyday creative DIY, plywood is almost everywhere, serving as an indispensable fundamental material in modern industry and daily life.
Ultimate Efficiency: High level of automation significantly reduces manual intervention. The line speed is markedly increased, offering productivity far exceeding that of traditional equipment.
Exceptional Quality: Precise control systems ensure uniform veneer thickness and accurate glue application, resulting in final products with stable structure, high strength, and a smooth surface.
Energy Economy: The optimized drying and hot pressing systems effectively reduce energy consumption and minimize raw material waste, saving operational costs for our clients.
Reliability & Durability: Key components from internationally renowned brands and a robust structure ensure long-term, stable, and continuous operation with low failure rates.
We maintain a long-term cooperation with a well-known freight forwarding company, and adhere to the customer-first philosophy. We strictly implement the quality inspection process before shipment to ensure that each batch of products meets international quality standards, We deeply understand that high-quality service is the cornerstone of winning customer trust, and we always create value for customers with professional and efficient supply chain management.
Whether producing construction formwork, furniture panels, or other commercial plywood, this production line is your ideal choice to enhance competitiveness and capture market share. We provide comprehensive turnkey project services, including planning, installation, commissioning, and personnel training.
Contact us now for a customized solution and quotation!
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
The production of plywood is a complex systematic engineering process designed to transform raw logs into structurally stable panels of various sizes. The main steps are as follows:
1. Log Handling: Purchased logs (e.g., poplar) are cut into required bolt lengths and steamed/softened to facilitate better peeling.
2. Peeling & Drying: The softened bolts are fed into a veneer lathe, which rotates them against a blade to produce continuous thin veneer sheets. The wet veneer is then dried through a roller dryer to achieve a suitable moisture content (typically 8%-12%), preventing later cracking and warping.
3. Veneer Sorting & Patching: The dried veneer is sorted based on grade, size, and defects. Defective veneer sheets are patched using a patching machine to improve yield.
4. Gluing & Lay-up: Qualified veneer sheets are coated evenly with adhesive (e.g., Urea-Formaldehyde UF, Phenol-Formaldehyde PF) on their surfaces by a glue spreader (usually roller or curtain coater). The glued veneers (mainly for core layers) and unglued veneers (mainly for face/back layers) are assembled manually or automatically according to the designed number of plies and grain direction (adjacent layers are perpendicular to each other) to form a mat.
5. Pre-pressing & Hot Pressing: The assembled mat is first sent to a cold press or pre-press for initial shaping, expelling air and achieving preliminary bonding for easier handling. Subsequently, the mat is loaded into a multi-opening hot press. Under high temperature (typically 140-180°C) and high pressure (typically 10-20 MPa), the adhesive is rapidly cured, permanently bonding the veneers into a solid panel.
6. Post-processing: The pressed panels with rough edges are cooled, then trimmed to standard dimensions by double-end saws or cross-cutting saws. Depending on requirements, they are sanded to achieve a uniform smooth surface thickness, then graded and packaged.
Pre-treatment Equipment: Log cross-cut saw, debarker, steaming vat/pool.
cutting machine
log debarker
Peeling & Drying Equipment: CNC spindleless veneer lathe, roller veneer dryer.
veneer peeling machine
drying machine
Veneer Handling Equipment: Veneer stacker, veneer splicer/patcher, veneer sorting system.
Gluing & Lay-up Equipment: Roller glue spreader or curtain coater, automatic lay-up line, mat conveyor.
Forming & Pressing Equipment: Pre-press, multi-opening hot press (typically 15-30 openings), hydraulic system, heating system.
pre press machine
hot press machine
Finishing Equipment: Cooler and panel turnover device, cross-cutting and edge trimming saw, wide-belt sander (double-head or more), automatic stacker, packaging machine.
sawing machine
sander
stacking
Auxiliary Systems: Central electrical control system, dust collection system, thermal energy center (providing heat), glue preparation system.
1. Structure:
Plywood is a type of engineered wood panel made by bonding an odd number of thin wood veneers (e.g., 3-ply, 5-ply, 7-ply) with the grain of adjacent layers perpendicular to each other.
The outermost veneers are called face/back veneers, typically made from higher-quality wood with fewer defects. The front side is the face, and the back side is the back.
The inner veneers are called the core or cross-band veneers. The central layer is called the center core.
This cross-grain structure effectively counteracts the inherent anisotropy of wood, resulting in plywood having more uniform strength in all directions, better dimensional stability, and resistance to splitting and warping.
2. Materials:
Face/Back Veneer Materials: Typically hardwoods with attractive grain patterns, such as Eucalyptus, Okoume, Birch, Beech, Lauan, used for high-end furniture and decoration. Poplar veneer can also be used after color treatment.
Core Materials: Usually species that are abundant, economical, and easy to process. Poplar is one of the most common and ideal core materials. Other common core woods include eucalyptus, mixed hardwoods, and pine (requires resin removal treatment).
Adhesive: Chosen based on application and environmental requirements.
Interior Use: Urea-Formaldehyde (UF) resin is common, cost-effective, but has poor water resistance.
Exterior/Moisture Resistant Use: Phenol-Formaldehyde (PF) resin is used, which is dark-colored and offers strong water resistance and durability.
High Environmental Requirements: Formaldehyde-free adhesives are used, such as soy-based glue or MDI, to produce E0-level or NAF (No Added Formaldehyde) panels.
Poplar is one of the most important and popular core materials in the global plywood industry, offering significant advantages:
1. Abundant Resources & Stable Supply: Poplar has a short growth cycle and is widely cultivated in China, Europe, North America, etc., ensuring stable raw material supply and relatively economical prices.
2. Moderate Density, Lightweight with Good Strength: Poplar has a medium density, leaning towards softwood. This results in a lighter final plywood product, facilitating transportation and construction, while still providing sufficient strength and flexibility.
3. Light Color, Easy for Toning: The core wood of poplar is pale and uniform in color. It does not bleed through thin face veneers to affect the surface color, making it particularly suitable for light-colored or high-demand surface decoration.
4. Excellent Machinability: Poplar has a uniform texture and moderate fiber length, making it easy to peel, dry, and sand. The peeled veneer is smooth and flat with a low breakage rate.
5. Good Bonding Performance: The pore structure of poplar is suitable, offering good permeability and affinity for common adhesives (e.g., UF, PF), resulting in high bond strength and reduced risk of delamination.
6. High Structural Stability: Poplar has a relatively low shrinkage rate after drying and good compatibility with other materials. As a core layer, it effectively enhances the overall dimensional stability of the plywood, reducing warping and deformation.
Plywood is an extremely versatile engineered wood product valued for its high strength, dimensional stability, ease of fabrication, and cost-effectiveness. Its primary applications include:
1. Construction & Building
Concrete Formwork: One of the largest applications. Film-faced plywood (especially phenolic film-coated) provides a smooth, waterproof,and reusable mold for pouring concrete.
Structural Applications: Used for roof sheathing, wall sheathing, floor underlayment (subfloor), and shear walls/partitions in wood-frame construction, providing overall structural strength and stability.
Interior Decoration: Widely used for ceilings, wall paneling, partitions, stair treads, and cabinet liners. Often combined with decorative surfaces like HPL, wood veneer, or melamine-impregnated paper.
2. Furniture Manufacturing
Core Material: Plywood is a core material for panel furniture, kitchen cabinets, office furniture, wardrobes, and bed frames. It provides a sturdy skeleton, which is then laminated with various decorative surfaces.
Furniture Components: Used for furniture backs, shelves, drawer bottoms, chair seats, and backs. Bent plywood is also commonly used to create furniture with curved designs.
3. Packaging & Transportation
Export Packaging: Plywood crates (often called "plywood cases" or "non- fumigation wooden boxes") are strong, lightweight, and comply with international phytosanitary standards (ISPM-15), requiring no fumigation. They are widely used for packaging machinery, electronics, ceramics, and chemicals for export.
Pallets & Skids: Plywood pallets are lightweight, sturdy, and resistant to splitting, making them suitable for storage and logistics.
4. Vehicle Manufacturing
Shipbuilding: Marine-grade plywaterproof plywood (typically made with phenolic glue and high-quality durable veneers) is used for boat bulkheads, decks, interior paneling, and furniture.
Automotive & Railway: Used for flooring, interior wall panels, partitions, and fittings in trucks, buses, RVs, and railway carriages.
Aerospace: High-grade aircraft plywood is used in the construction of light aircraft wings, fuselage components, interior panels, and cargo flooring.
5. Other Specialized & Creative Applications
Flooring Underlayment: Serves as a base layer for laminate flooring and engineered flooring, providing a flat and solid foundation.
Advertising & Exhibition: Used for billboards, exhibition booths, display stands, and stage backdrops.
Agriculture & Aquaculture: Used for poultry houses, greenhouse structures, aquaculture pens, and fishing boat decks.
Musical Instrument Making: High-grade plywood is used for the backs, sides, and soundboards of instruments like guitars, violins, and pianos.
DIY & Creative Projects: Loved by hobbyists for its ease of cutting, sanding, and painting, it's used to make bookshelves, toys, models, and home decor items.
In summary, From high-strength structural engineering to precision furniture making, from harsh marine environments to everyday creative DIY, plywood is almost everywhere, serving as an indispensable fundamental material in modern industry and daily life.
Ultimate Efficiency: High level of automation significantly reduces manual intervention. The line speed is markedly increased, offering productivity far exceeding that of traditional equipment.
Exceptional Quality: Precise control systems ensure uniform veneer thickness and accurate glue application, resulting in final products with stable structure, high strength, and a smooth surface.
Energy Economy: The optimized drying and hot pressing systems effectively reduce energy consumption and minimize raw material waste, saving operational costs for our clients.
Reliability & Durability: Key components from internationally renowned brands and a robust structure ensure long-term, stable, and continuous operation with low failure rates.
We maintain a long-term cooperation with a well-known freight forwarding company, and adhere to the customer-first philosophy. We strictly implement the quality inspection process before shipment to ensure that each batch of products meets international quality standards, We deeply understand that high-quality service is the cornerstone of winning customer trust, and we always create value for customers with professional and efficient supply chain management.
Whether producing construction formwork, furniture panels, or other commercial plywood, this production line is your ideal choice to enhance competitiveness and capture market share. We provide comprehensive turnkey project services, including planning, installation, commissioning, and personnel training.
Contact us now for a customized solution and quotation!
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
