1. Raw Material Receiving & Pre-treatment : Various wood raw materials (logs, offcuts, recycled wood) are chipped and flaked into specification particles.

2. Drying : Wet flakes enter a rotary drum dryer to reduce moisture content to 3%–6% (surface layer 4–6%, core layer 3–5%), preparing for subsequent flame retardant treatment.

3. Flame Retardant Addition (Multi-Stage) : Utilizes multi-stage spraying/dosing technology at multiple points:

   Spraying flame retardant solution onto wet flakes before drying

   Applying powder flame retardant onto dry flakes during conveying after drying

   Simultaneous addition during the gluing process

   Supplementary spraying during mat forming/hot pressing stages

4. Screening & Refining : Treated flakes are classified by vibrating screens; surface fines and core coarse materials are stored separately.

5. Gluing : Surface and core flakes are each mixed with eco-friendly adhesives (UF, MUF, or MDI) via high-precision metering gluing systems.

6. Mat Forming : Layered forming heads spread glued flakes in a surface-core-surface structure, creating a multi-layer mat with flame retardant concentrated near surface layers for maximum efficiency.

7. Pre-pressing & Continuous Flat Pressing : The mat is pre-pressed for air removal and then cured under high temperature and pressure (up to 230–240°C) in a continuous flat press to form an endless raw board.

8. Cooling & Cutting : The raw board is cooled on a cooling turntable, then cut into standard panels by cross-cut and rip saws.

9. Sanding & Inspection : Panels are double-side sanded by a wide-belt sander, then pass through online thickness, density, and fire performance inspection before stacking and warehousing.

Chipper / Flaker

Rotary Drum Dryer (with Hot-Air Furnace)

Flame Retardant Spraying/Dosing System (including storage tanks, metering pumps, atomizing nozzles/powder spreaders)

Multi-Layer Vibrating Screen

High-Precision Gluing System (with Metering Pumps & Mixers)

Layered Mat Forming Machine

Mat Pre-press (optional vibration compaction feature)

Continuous Flat Hot Press

Cooling Turnover Stacker

Cross-cut Saw / Rip Saw

Double-Side Wide-Belt Sander

Online Inspection System (Thickness, Density, Fire Performance)

Fully Automatic Electrical Control System (PLC + HMI)

Fireproof Door Core Panels : Core filling material for wooden fire doors

Building Partitions & Ceilings : Fire-rated partition walls and ceilings in public spaces, commercial buildings, hospitals, and schools

Furniture Manufacturing : Fire-safe office furniture, hotel furniture, and kitchen cabinets

Transportation : Interior fire-retardant panels for trains, ships, and automobiles

Construction Formwork : Fire-safe temporary formwork for construction sites

Exhibition & Decoration : Fire-rated substrates for exhibition stands and interior decoration

Ventilation Duct Cladding : Fire protection layers for building ventilation systems

1. Multi-Stage Flame Retardant Dosing Technology : Flexible addition at multiple stages (pre-drying, post-drying, during gluing, during forming) ensures thorough particle absorption and uniform flame retardant distribution, preventing under-treatment or wasteful over-application.

2. Adapted for Continuous Press High-Temperature Process : Optimized flame retardant formulations and dosing timing maintain stable board curing quality and fire performance under continuous press high-temperature conditions (230–240°C).

3. Surface-Core Layered Fire Retardant Design : Surface and core layers can use different proportions/types of flame retardants, reducing costs while ensuring effectiveness – flame retardants are concentrated near surface layers to minimize loss during final sanding.

4. Excellent Product Quality : Continuous pressing delivers smooth surfaces, tight thickness tolerances, high internal bond strength, and uniformly reliable fire performance.

5. Flexible Customization : Equipment configuration can be tailored based on raw material types, capacity needs, and target fire retardant ratings.

6. International Standards Compliance : Produced fire-retardant particleboard meets EN 312, ASTM E84, CARB, GB 8624 and other international fire safety and environmental standards.

7. Fully Automated Control : PLC + HMI control system provides real-time monitoring and adjustment of flame retardant dosing rates, temperature, pressure, and other critical parameters, ensuring consistent product quality.