Gramineous Crops MDF Production Line 1000 M³ Per Day Capacity

Our company is proud to introduce this high-performance MDF Production Line specifically engineered for gramineous crops, with a robust daily output of 1000 cubic meters. Designed and optimized for utilizing annual plant fibers like rice straw, wheat straw, and reed, this line presents an ideal and eco-friendly alternative to traditional wood fiber.

The core strength of this production line lies in its innovative technology and commitment to sustainability. It incorporates advanced fiber preparation, precise mat forming, and high-efficiency continuous pressing to ensure the output boards feature exceptional density uniformity, superior mechanical strength, and a smooth surface finish. A fully automated control system guarantees stable, efficient operation with low energy consumption.

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Gramineous Crops MDF Production Line 1000 M³ Per Day Capacity

Ⅰ. Gramineous Crops Suitable for MDF Production

The Poaceae family is a vast plant family, and many annual or fast-regenerating crops have stalks (straw) rich in cellulose, making them excellent raw materials for manufacturing Medium Density Fiberboard (MDF). Main types include:

Straw

Reed

Corn stalks

1. Rice Straw: The residue left after rice harvest, one of the most abundant and primary agricultural wastes in Asia.

2. Wheat Straw / Barley Straw: The stalks remaining after harvesting wheat and barley, abundantly available in grain-producing regions like North America, Europe, and China.

3. Corn Stover / Maize Stalk: Includes corn cobs and corn stalks, produced in massive quantities in the Americas and Asia.

4. Reed: A perennial tall grass growing in wetlands and riverbanks, known for its high-quality fiber.

5. Bagasse: The fibrous residue remaining after sugarcane is crushed to extract its juice. While technically a processing by-product, it is often grouped here due to its similar fibrous characteristics.

6. Miscanthus: A high-yielding, perennial energy grass specifically cultivated for biomass energy.

7. Bamboo: Although often categorized separately, bamboo belongs botanically to the Poaceae family. Its long and strong fibers can be used to produce high-quality bamboo MDF or blended with other straws.

Ⅱ. Advantages as Raw Material

Using straw from gramineous crops as a raw material for MDF production offers multiple significant advantages over traditional wood:

1. Environmental Sustainability

Waste-to-Resource, Reduced Pollution: Straw is an agricultural by-product. Traditionally often burned in fields, causing severe air pollution (smog) and carbon emissions. Using it for industrial production effectively solves this environmental problem.

Conserves Forest Resources: Reduces logging in natural and planted forests, helping to protect biodiversity, conserve water and soil, and mitigate climate change.

Lower Carbon Footprint: Crops have short growth cycles (harvested annually) and rapidly sequester carbon dioxide through photosynthesis. Turning them into products represents carbon sequestration, and their lifecycle carbon footprint is typically lower than that of wood products.

2. Material Performance Potential

Low Density and Good Insulation: Straw is naturally hollow, which can result in lighter-weight boards with better thermal insulation properties.

Low Formaldehyde Emissions: The silica and natural waxes in straw fibers reduce their hydrophilicity and can mean less synthetic resin adhesive (e.g., urea-formaldehyde) is required in the manufacturing process. This facilitates the production of "no-added-formaldehyde" or ultra-low emitting top-tier eco-friendly boards.

Surface Smoothness: The morphological characteristics of straw fibers contribute to the formation of a uniform and fine mat, which, after pressing, results in a smooth and flat surface suitable for high-quality laminating and painting.

3. Economic and Supply Advantages

Low and Stable Raw Material Cost: As an agricultural waste, its initial acquisition cost is usually much lower than wood. The raw material source is widespread, abundant, and stable, not subject to the sharp fluctuations of the wood market.

Shortened Production Cycle: Crops are harvested annually within months of planting, whereas wood requires years or decades. This ensures rapid regeneration and a sustainable supply of raw materials.

Aligns with Policy Directives: Governments worldwide often have policies and subsidies encouraging the comprehensive utilization of agricultural waste and developing a circular economy. Companies using straw raw materials may benefit from these incentives.

4. Social Benefits

Creates Additional Income for Farmers: Selling straw can provide a new source of economic income for farmers, improving the overall profitability of agricultural production.

Promotes Rural Economic Development: Production line factories can be established near raw material sources, reducing transportation costs while creating new job opportunities and fostering industrial development in rural areas.

Ⅲ.MDF Production Process

The production of Medium Density Fiberboard (MDF) is a continuous, highly automated process, primarily consisting of the following steps:

1. Raw Material Preparation

Chipping: Wood or gramineous crops (e.g., rice straw, wheat straw) are processed through a chipper into uniformly sized flakes (wood chips or straw flakes).

Washing & Screening: The raw material flakes are washed to remove impurities like sand, stones, and metals. They are then screened to separate oversized and undersized fragments. Qualified flakes proceed to the next stage, while unqualified ones are returned for reprocessing.

2. Fiber Preparation - Core Stage

Pre-steaming: The raw material flakes are fed into a pre-steaming bin where they are heated and softened with saturated steam, plasticizing the lignin and making the fibers easier to separate.

Defibrination in Refiner: The softened flakes are continuously fed into the main refining chamber of a defibrator (refiner). Under high temperature and pressure, the material is torn and rubbed between rotating磨盘 (refiner plates), separating into individual fibers and fiber bundles.

Resin Blending & Drying:

Blending: The separated fibers are blown at high speed into a drying pipe. Before this, they are thoroughly mixed with atomized adhesive (usually urea-formaldehyde resin or MDI), wax (water repellent), and other additives (e.g., hardener).

Drying: The moist fibers come into instant contact with high-temperature hot air (typically from a thermal energy plant) in the pipe, rapidly evaporating the moisture to produce dried fibers with uniform moisture content.

3. Mat Forming & Pre-pressing

Forming: The dried fibers are distributed via an air-laid or mechanical forming station onto a continuously moving caul screen (steel belt), forming a uniform, symmetrically structured, fluffy "fiber mat".

Pre-pressing: The fluffy mat then enters a pre-press. The pre-press applies significant mechanical pressure to initially compact it, removing most of the air and increasing its initial strength. This transforms it into a firm, handleable mat of defined thickness, ready for transport into the hot press.

4. Hot Pressing & Curing

Hot Pressing: The mat is fed into a continuous flat press. Heated platens apply high temperature (typically 200-250°C) and high pressure, causing the adhesive on the fiber surfaces to melt and cure rapidly, bonding the loose fibers firmly together into a dense board. This is the critical step determining the board's final thickness, density, and mechanical properties.

5. Post-processing

Cooling & Trimming: The board exiting the hot press is very hot and must be cooled in a multi-roll star cooler to stabilize internal stresses. It is then trimmed to standard dimensions by cross-cut and edge trim saws, resulting in a rough-sized board.

Sanding: The surface of the rough board is uneven, and density distribution may have minor variations. It must be calibrated and sanded by a wide-belt sander (usually with multiple heads for coarse and fine sanding) to achieve the precise final thickness and a smooth, uniform surface, ready for laminating, painting, or direct use.

Testing & Grading: Finally, the finished boards are tested (e.g., thickness, density, MOR, formaldehyde emissions) and graded according to quality standards before being packaged and stored.

MDF生产流程

Ⅳ.Machinery and Equipment

To achieve a daily output of 1000 cubic meters (approx. 555 tons, based on 18mm thickness), the production line must be equipped with large-scale, high-efficiency, continuous equipment.

1. Raw Material Handling System

Heavy-duty Chipper: High-power, high-capacity, equipped with heavy-duty flying knives and bed knives for efficient processing of logs, slash, or baled straw.

Drum Screen / Vibrating Screen: For screening chips/flakes to separate qualified raw material.

Magnetic Separator & Washing System: Powerful magnet for removing metal impurities. Wash tank or drum for removing sand and heavy debris.

wood flaker

MINGHUNG Oriented Strand Board Cylindrical Sieve System

vibrating screen

2. Fiber Preparation System

Pre-steaming Bin: Large vertical bin for sufficient and uniform steam pre-treatment of raw material flakes.

Large-capacity Refiner: The core machine of the line. Must be a high-power (typically several thousand kW), high-capacity (processing tens of tons of oven-dry material per hour) continuous defibrator. Key components include: feed screw, pre-heating digester, screw feeder, main motor, refining plates with refining zone, etc.

Resin Blending System: Includes storage tanks for resin, wax, additives; metering pumps; and high-pressure atomizing nozzles to ensure precise, proportional, and uniform application of chemicals onto the fibers.

Pneumatic Drying System: Large drying pipe, high-efficiency cyclone separators, furnace (thermal energy plant), and exhaust fan. Ensures fibers are dried to the target moisture content (typically 8-12%) in a very short time.

fiber cooking and refining system

glue mixer

fiber drying system

3. Forming and Pre-pressing System

Air-laid Forming Station: A 1000 m³/day line requires a multi-head, scanning-type air forming station. Its core is the forming head and scanning/oscillating mechanism, ensuring absolutely uniform fiber distribution both longitudinally and transversely across the wide (typically over 8 feet) caul screen. This is key to consistent board quality.

Continuous Belt Pre-press: Applies gradual pressure to the fluffy fiber mat via two large pressing steel belts for initial compaction.

MINGHUNG MDF PB OSB Mat Forming And Layering Machine

mat forming machine

pre press

4. Hot Pressing System

Continuous Flat Press: Key equipment for high output. Its working principle: the mat is conveyed between two massive, continuously circulating steel belts (one or both heated) and pressed by a complex array of hydraulic cylinders applying uniform pressure and heat from above. Main components include: press frame, heated steel belt system, hydraulic cylinder array, roller system, drive and control system. It can be dozens of meters long to ensure sufficient press time for complete resin curing.

Continuous Hot Press Machine Line

5. Post-processing System

Cooling Star Cooler: Multi-level roller conveyor where boards pass through in an "S" pattern, cooled by fans.

Cross-cut & Edge Trim Saws: High-speed saw units for precise cutting of board length and width.

Multi-head Wide-belt Sander: Typically 6 or more heads (combining coarse and fine sanding), wide sanding belts, high-power motors for high-efficiency, high-precision calibration and sanding of both board surfaces.

PB MDF OSB Continuous Belt Hot Press Machine Line

dryer rack

MINGHUNG MDF PB OSB Edge Trimming Machine And Cutting Machine

cross-cut saw

Double sided four frame sanding machine for MDF PB production line

sander

6. Auxiliary Systems

Thermal Energy Plant (TEP): Provides the necessary heat (thermal oil or steam) for core processes (refining, drying, pressing), often fueled by wood waste (bark, sander dust) for energy self-sufficiency.

Central Dust Extraction System: Extensive network of pipes and dust collectors to capture dust from all processes, ensuring a clean and safe production environment.

Automation Control System (DCS/PLC): Distributed Control System monitoring and regulating operating parameters of all equipment, ensuring stable, efficient, and continuous operation of the entire production line.

Medium Density Fiberboard Production Machine Line

Thermal Energy Center

Siemens PLC for MDF PB OSB production line

PLC

Ⅴ. Main Application Scenarios

MDF panels made from gramineous crops (e.g., rice straw, wheat straw) are carving out a broad market in numerous fields due to their unique environmental and performance advantages. Their main application scenarios include, but are not limited to, the following areas:

1. Furniture Manufacturing

Panel Furniture: Used for making structural parts of bookcases, wardrobes, TV cabinets, nightstands, as well as non-load-bearing or low-load-bearing components like drawer bottoms, sides, and backs. Their smooth surface is ideal for laminating (with melamine-impregnated paper, veneer), painting, or wrapping.

Office Furniture: Used for office partitions, desk tops (Especially the procurement activities of enterprises that support environmental protection concepts), filing cabinets, etc. Their low formaldehyde emission significantly improves indoor air quality, making them particularly suitable for office environments with limited ventilation.

Custom Furniture & Cabinets: An increasing number of custom furniture brands offer gramineous MDF as an "eco-upgrade" option to consumers, especially for making kitchen cabinet carcasses and doors (substrate). With special treatment, its moisture resistance can also meet the demands of kitchen environments.

2. Interior Decoration & Construction

Door Core Material: This is a very important and high-volume application. As the core filler material for interior doors, molded doors, and fire doors, it is lightweight, offers high flatness and uniform structure, effectively prevents door warping, and provides good sound and thermal insulation.

Wall Panels, Partitions & Ceilings: Used for decorative wall panels, interior partitions, and ceiling materials. Their easy workability allows for creating various shapes, Such as hollowing out, milling patterns, etc., can meet the requirements of various design styles.

Flooring Underlayment: Laid under solid wood or composite flooring as a leveling and cushioning layer. It provides a flat sub-surface, enhances underfoot comfort, and offers some thermal and acoustic insulation.

Baseboards, Mouldings & Picture Frames: Through sawing, milling, and laminating, various specifications and profiles of baseboards, door frames, ceiling mouldings, as well as picture frames and mirror frames can be produced.

3. Packaging Industry

High-end Gift Packaging & Display Stands: Used for high-end packaging inserts, trays for wine, electronics, cosmetics, gifts, and display stands/units for retail stores. Their environmental attribute ("from nature, can return to nature") and customizable appearance align perfectly with green marketing strategies.

Logistics Pallets & Dunnage: In lightweight logistics, it can replace some wood for making disposable or reusable pallets and dunnage, offering lightweight and competitive cost.

4. Other Specialized Applications

Automotive Interiors: Can be used for non-structural interior components like door panel liners, trunk partitions, and seat backboards. Its lightweight characteristic aids in vehicle weight reduction and lower energy consumption.

Household Items & DIY: Used for toys, photo albums, stationery, storage boxes, pet houses, etc. The low-formaldehyde feature is particularly important for home users.

Audio Equipment: Due to its uniform internal structure and stable acoustic properties, some manufacturers use it to make speaker enclosures.

Who We Are

MINGHUNG OSB&MDF Machinery Equipment Manufacture Co., Ltd. Located in Xiaogezhuang Industrial Zone, Yitang Town, Lanshan District, Linyi City.

MINGHUNG Company provides a complete set of process design, electrical design and manufacturing, We can provide one-stop complete factory solutions for wood-based panel customers. MINGHUNG product series include medium density fiberboard (MDF), high density fiberboard (HDF), particle board (PB), oriented strand board (OSB), veneerable super strong particle board (LSB) multi-layer heat press production line, double-sided fixed thickness broadband Sanding machine, gauge saw, mechanical paving machine, air flow paving machine, channel dryer, super screen, post-processing system artificial panel cooling system, turning machine, stacker, storage and transportation trolley. etc. For artificial panel equipment mainly involved in particleboard, medium density fiberboard, oriented strand board, multilayer plywood machinery.

China chipboard mdf osb production line China MINGHUNG PB MDF OSB production line

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MINGHUNG OSB&MDF Machinery Equipment

Exhibition

We regularly participate in international industry exhibitions based on the company's business development and customer needs. On one hand, this helps us showcase our company's strength and expand new customers. On the other hand, we visit existing customers for follow-up visits, thereby enhancing the bond between them.

SHANDONG MINGHUNG WOOD MACHINERY

SHANDONG MINGHUNG OSB&MDF MACHINERY

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Whatsapp: +8618769900191 +8615589105786 +8618954906501

Email: osbmdfmachinery@gmail.com

In Caoxian County, Shandong—a significant hub for China's wood-based panel industry—a crucial collaboration was finalized in 2017. Leveraging its professional expertise, Shandong Minghung successfully delivered a turnkey project for Shandong Longsen Wood Industry Co., Ltd. (Longsen Wood): a high-quality particleboard production line with an annual capacity of 150,000 cubic meters. This achievement marked a major leap forward for Longsen Wood and vividly showcased Minghung's strength in the field of complete equipment manufacturing for panel production lines.