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MINGHUNG
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Plywood Production Line
A complete plywood production line is a complex system that processes raw logs through a series of steps to ultimately produce plywood of various specifications and grades. Its main processes include: Log handling → Veneer manufacturing → Veneer drying → Veneer processing → Gluing and lay-up → Cold pressing → Hot pressing → Finishing and sanding.
List of Required Main Machinery and Equipment
1. Log Processing Section:
Debarker: Removes bark from raw logs.
Log Buck Saw: Cuts logs into required billet lengths.
Log Steaming Pond/System: Softens billets for easier peeling.
Debarker
Log Buck Saw
2. Veneer Manufacturing Section:
Veneer Lathe: Core equipment. Peels steamed billets into continuous veneer sheets.
Veneer Slicer: Used to produce decorative veneer with beautiful grain patterns.
3. Veneer Processing Section:
Veneer Clipper: Cuts continuous veneer sheets to required dimensions.
Veneer Dryer: Typically drum or mesh belt dryers, used to reduce the moisture content of veneer.
Veneer Splicer: Joins small veneer sheets into full-size sheets, including tape splicing and finger jointing.
4. Gluing and Lay-up Section:
Gluing Machine / Glue Spreader: is key to ensuring the bonding quality and glue consumption of plywood, responsible for evenly applying adhesive to the veneer surface.
Main Types:
1. Double-Roller Spreader: The most common type. Adhesive is applied evenly to the veneer surface via two counter-rotating rollers (a glue roller and a doctor roller). Glue thickness is controlled by adjusting the gap between the two rollers.
2. Four-Roller Spreader: Mainly used for double-sided gluing, more efficient and provides more even application.
3. Doctor Blade Spreader: Uses a fixed blade to control glue volume, suitable for low-viscosity adhesives and high-precision application.
Core Structure and Functions:
Glue Tank: Stores and supplies adhesive.
Application Roller: Usually a rubber or steel roller, directly transfers glue to the veneer surface.
Doctor Roller / Metering Roller: Works with the application roller to precisely control the amount of adhesive on the application roller.
Transmission System: Drives the rollers and synchronizes with the production line speed.
Adjustment Device: Used to precisely adjust the gap and pressure between rollers, thereby controlling the glue spread (g/m²).
Cleaning Device: Automatically removes residual glue particles and debris from the rollers.
Importance:
The uniformity and amount of glue application directly determine the bonding strength, formaldehyde emissions (related to glue amount), and production cost of the plywood. Uneven application can lead to defects such as delamination and blistering.
Lay-up Line / Assembly Table: Manual or automatic stacking of glued and unglued veneer with cross-grained orientation to form a mat (panel assembly).
5. Pressing and Forming Section:
Pre-press / Cold Press: One of the core equipment, used for preliminary pressing of the assembled mat to shape it and prevent misalignment during handling and hot pressing.
Primary Purposes:
(1) Initial Bonding: Creates initial bonding between the veneers in the mat, providing sufficient green strength.
(2) Reduce Mat Thickness: Compresses the mat, expelling air and making it more compact.
(3) Prevent Shifting: Ensures the mat does not collapse or shift during transport to the hot press and during loading, which is crucial for multi-layer plywood production.
(4) Improve Production Efficiency: Pre-pressed, thinner mats can be pressed faster in the hot press, shortening the hot pressing cycle.
Core Structure and Functions:
Frame: Sturdy steel structure that withstands enormous pressure.
Cylinders: Hydraulic cylinders provide the pressure.
Platens: Multi-opening cold presses have multiple platens, while single-opening presses usually have a top and bottom platen. Platen surfaces must be flat and smooth.
Hydraulic System: Provides power to the cylinders, including motor, oil pump, valves, and control system.
Control System: Controls pressure, hold time, and opening/closing speed. Modern cold presses use PLC controls, allowing for multi-stage pressing programs.
Frame
Hydraulic System
Cylinders
Difference from Hot Press:
Temperature: Cold press operates at room temperature, no heating; hot press heats the platens via steam, thermal oil, or electricity to provide the heat needed to cure the adhesive.
Pressure: Cold press pressure is generally lower than hot press pressure.
Function: The cold press's main purpose is shaping and achieving initial strength; the hot press's purpose is final curing and forming.
Although the cold pressing process is simple, it is indispensable. It greatly improves production line stability and final product quality, serving as a critical bridge between gluing/lay-up and hot pressing.
Hot Press: The most critical equipment. Cures the adhesive under high temperature and pressure, bonding the veneers firmly into plywood.
6. Finishing Section:
Cooling Turner: Cools and turns the panels after hot pressing.
Trimming Saw: Trims all four edges of the panel to standardize dimensions.
Sanding Machine: Sands the panel surface to make it smooth and even.
Inspection and Packaging Equipment.
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Technical Features
High Efficiency and Energy Saving: The cold press process does not require heating, reducing energy consumption by more than 30% compared to hot press production lines.
High Gluing Precision: Uses a worm gear screw synchronous adjustment mechanism to control gluing thickness error within ±0.1mm, avoiding adhesive waste.
Strong Adaptability: Can process various types of boards (e.g., particleboard, MDF, blockboard, fireproof board), with a width adaptation range of 1250mm to 1500mm.
Durable and Reliable: Key components such as chrome-plated steel rollers and natural high-quality rubber rollers are wear-resistant and corrosion-resistant, ensuring a long service life.
Environmentally Friendly and Safe: Supports low-formaldehyde emission adhesives (e.g., E0 grade), complying with international environmental standards; the equipment is equipped with emergency stop devices and protective covers for safe operation.
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Comment & FAQ
Q:What can you purchase from us?
A:Particle board production line, directional particle board production line, medium/high fiber board production line, hot press, preforming press machine, plywood production line, automatic production line for hot press, veneer dryer, hot press, cold press machine and other woodworking machinery.
Q:How long the production time?
A:If one set machine,3-4 months;If the full production line 6-8 months.
Q:What are your advantages?
A:We have rich experience in the market, with the same cost, we do better because we have strict control of the production process. We have an independent inspection department to check the quality.
Q:How is your quality?
A:As an experienced manufacturer, the quality of our machines can be guaranteed and we have supplied our products to thousands of customers all over the world.
Q:What is your warranty? Can you provide us with more services? What we hope to be protected after purchasing the machine?
A:We are pleased to provide continuous after-sales service for our products. Within 12 months, if the spare parts are damaged, we will respond promptly. We are willing to help you solve any problems you encounter when using the machine at any time. We will serve all customers' questions or difficulties 24 hours a day and provide solutions within 48 hours.
|
Company Profile
We are Shandong MINGHUNG Wood Based Panel Machinery Co.,Ltd China factory and manufacturer of full sets of Plywood machinery and Veneer machinery. With many years production experience, advanced production technology,experienced workers and professional engineers, we can offer you the suitable, good and strong machinery for you.
Machines include:Veneer production line(Log debaker,Veneer peeling machine, Log loader,Automatic stacker)，Blade sharpener,Veneer patching machine,Veneer dryer machine(Veneer roller dryer, Veneer mesh dryer, Veneer press dryer), Veneer gluing machine,Plywood lay-up machine, Veneer jointing machine, Plywood cold press, Hot press machine,Plywood edge trimming cutting machine, Sanding and calibrating machine, Plywood overturn machine, Lift table, and so on.
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Production Process
|
Certifications
|
Customer group photo
Contact us for a free quote today!
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
|
Plywood Production Line
A complete plywood production line is a complex system that processes raw logs through a series of steps to ultimately produce plywood of various specifications and grades. Its main processes include: Log handling → Veneer manufacturing → Veneer drying → Veneer processing → Gluing and lay-up → Cold pressing → Hot pressing → Finishing and sanding.
List of Required Main Machinery and Equipment
1. Log Processing Section:
Debarker: Removes bark from raw logs.
Log Buck Saw: Cuts logs into required billet lengths.
Log Steaming Pond/System: Softens billets for easier peeling.
Debarker
Log Buck Saw
2. Veneer Manufacturing Section:
Veneer Lathe: Core equipment. Peels steamed billets into continuous veneer sheets.
Veneer Slicer: Used to produce decorative veneer with beautiful grain patterns.
3. Veneer Processing Section:
Veneer Clipper: Cuts continuous veneer sheets to required dimensions.
Veneer Dryer: Typically drum or mesh belt dryers, used to reduce the moisture content of veneer.
Veneer Splicer: Joins small veneer sheets into full-size sheets, including tape splicing and finger jointing.
4. Gluing and Lay-up Section:
Gluing Machine / Glue Spreader: is key to ensuring the bonding quality and glue consumption of plywood, responsible for evenly applying adhesive to the veneer surface.
Main Types:
1. Double-Roller Spreader: The most common type. Adhesive is applied evenly to the veneer surface via two counter-rotating rollers (a glue roller and a doctor roller). Glue thickness is controlled by adjusting the gap between the two rollers.
2. Four-Roller Spreader: Mainly used for double-sided gluing, more efficient and provides more even application.
3. Doctor Blade Spreader: Uses a fixed blade to control glue volume, suitable for low-viscosity adhesives and high-precision application.
Core Structure and Functions:
Glue Tank: Stores and supplies adhesive.
Application Roller: Usually a rubber or steel roller, directly transfers glue to the veneer surface.
Doctor Roller / Metering Roller: Works with the application roller to precisely control the amount of adhesive on the application roller.
Transmission System: Drives the rollers and synchronizes with the production line speed.
Adjustment Device: Used to precisely adjust the gap and pressure between rollers, thereby controlling the glue spread (g/m²).
Cleaning Device: Automatically removes residual glue particles and debris from the rollers.
Importance:
The uniformity and amount of glue application directly determine the bonding strength, formaldehyde emissions (related to glue amount), and production cost of the plywood. Uneven application can lead to defects such as delamination and blistering.
Lay-up Line / Assembly Table: Manual or automatic stacking of glued and unglued veneer with cross-grained orientation to form a mat (panel assembly).
5. Pressing and Forming Section:
Pre-press / Cold Press: One of the core equipment, used for preliminary pressing of the assembled mat to shape it and prevent misalignment during handling and hot pressing.
Primary Purposes:
(1) Initial Bonding: Creates initial bonding between the veneers in the mat, providing sufficient green strength.
(2) Reduce Mat Thickness: Compresses the mat, expelling air and making it more compact.
(3) Prevent Shifting: Ensures the mat does not collapse or shift during transport to the hot press and during loading, which is crucial for multi-layer plywood production.
(4) Improve Production Efficiency: Pre-pressed, thinner mats can be pressed faster in the hot press, shortening the hot pressing cycle.
Core Structure and Functions:
Frame: Sturdy steel structure that withstands enormous pressure.
Cylinders: Hydraulic cylinders provide the pressure.
Platens: Multi-opening cold presses have multiple platens, while single-opening presses usually have a top and bottom platen. Platen surfaces must be flat and smooth.
Hydraulic System: Provides power to the cylinders, including motor, oil pump, valves, and control system.
Control System: Controls pressure, hold time, and opening/closing speed. Modern cold presses use PLC controls, allowing for multi-stage pressing programs.
Frame
Hydraulic System
Cylinders
Difference from Hot Press:
Temperature: Cold press operates at room temperature, no heating; hot press heats the platens via steam, thermal oil, or electricity to provide the heat needed to cure the adhesive.
Pressure: Cold press pressure is generally lower than hot press pressure.
Function: The cold press's main purpose is shaping and achieving initial strength; the hot press's purpose is final curing and forming.
Although the cold pressing process is simple, it is indispensable. It greatly improves production line stability and final product quality, serving as a critical bridge between gluing/lay-up and hot pressing.
Hot Press: The most critical equipment. Cures the adhesive under high temperature and pressure, bonding the veneers firmly into plywood.
6. Finishing Section:
Cooling Turner: Cools and turns the panels after hot pressing.
Trimming Saw: Trims all four edges of the panel to standardize dimensions.
Sanding Machine: Sands the panel surface to make it smooth and even.
Inspection and Packaging Equipment.
|
Technical Features
High Efficiency and Energy Saving: The cold press process does not require heating, reducing energy consumption by more than 30% compared to hot press production lines.
High Gluing Precision: Uses a worm gear screw synchronous adjustment mechanism to control gluing thickness error within ±0.1mm, avoiding adhesive waste.
Strong Adaptability: Can process various types of boards (e.g., particleboard, MDF, blockboard, fireproof board), with a width adaptation range of 1250mm to 1500mm.
Durable and Reliable: Key components such as chrome-plated steel rollers and natural high-quality rubber rollers are wear-resistant and corrosion-resistant, ensuring a long service life.
Environmentally Friendly and Safe: Supports low-formaldehyde emission adhesives (e.g., E0 grade), complying with international environmental standards; the equipment is equipped with emergency stop devices and protective covers for safe operation.
|
Comment & FAQ
Q:What can you purchase from us?
A:Particle board production line, directional particle board production line, medium/high fiber board production line, hot press, preforming press machine, plywood production line, automatic production line for hot press, veneer dryer, hot press, cold press machine and other woodworking machinery.
Q:How long the production time?
A:If one set machine,3-4 months;If the full production line 6-8 months.
Q:What are your advantages?
A:We have rich experience in the market, with the same cost, we do better because we have strict control of the production process. We have an independent inspection department to check the quality.
Q:How is your quality?
A:As an experienced manufacturer, the quality of our machines can be guaranteed and we have supplied our products to thousands of customers all over the world.
Q:What is your warranty? Can you provide us with more services? What we hope to be protected after purchasing the machine?
A:We are pleased to provide continuous after-sales service for our products. Within 12 months, if the spare parts are damaged, we will respond promptly. We are willing to help you solve any problems you encounter when using the machine at any time. We will serve all customers' questions or difficulties 24 hours a day and provide solutions within 48 hours.
|
Company Profile
We are Shandong MINGHUNG Wood Based Panel Machinery Co.,Ltd China factory and manufacturer of full sets of Plywood machinery and Veneer machinery. With many years production experience, advanced production technology,experienced workers and professional engineers, we can offer you the suitable, good and strong machinery for you.
Machines include:Veneer production line(Log debaker,Veneer peeling machine, Log loader,Automatic stacker)，Blade sharpener,Veneer patching machine,Veneer dryer machine(Veneer roller dryer, Veneer mesh dryer, Veneer press dryer), Veneer gluing machine,Plywood lay-up machine, Veneer jointing machine, Plywood cold press, Hot press machine,Plywood edge trimming cutting machine, Sanding and calibrating machine, Plywood overturn machine, Lift table, and so on.
|
Production Process
|
Certifications
|
Customer group photo
Contact us for a free quote today!
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
