PP Hollow Board Production Line

This PP Hollow Board Production Line integrates automatic feeding, extrusion, forming, straightening, cutting and packaging into one continuous workflow. It specializes in producing lightweight, high-strength PP hollow boards (corrugated boards/grid boards) with hollow grid structures, supporting customization of thickness, width and functional properties (anti-static, flame-retardant).

Description

As a professional PP Hollow Board Production Line, it adopts a 13-step automated process to ensure stable production of high-quality PP hollow boards—solving common issues like warping and uneven thickness in traditional production. The line starts with a vacuum loader that automatically conveys raw materials (PP resin + anti-static/flame retardant masterbatches) to the extruder, which uses a special exhaust screw and PLC temperature control to fully plasticize materials for high-output extrusion.

Molten material is then injected into a high-precision alloy steel mould to form the hollow grid structure, followed by vacuum shape forming (with low-temperature aluminum cooling plates) for precise shaping. A 5-roller haul-off unit pulls the board at adjustable speed to maintain thickness consistency, while heating-air cooling straightening eliminates internal stress—ensuring flatness and structural stability. After static elimination (to avoid dust adsorption), a 2-roller haul-off provides stable traction before the high-precision cross cutter performs fixed-length cutting. The final process includes bracket placement, quality inspection and moisture-proof packaging, with an optional edge trim recycling system to minimize material waste.

Feature

Automated intelligent control: Equipped with PLC and touchscreen HMI, realizing closed-loop control of extrusion pressure and speed, with fault auto-diagnosis and remote monitoring—improving production efficiency significantly.
Precise forming system: Adopts high-quality mould steel and dual vacuum cooling systems, solving wide-width production deformation and ensuring uniform wall thickness and smooth surfaces of PP hollow boards.
Flexible customization: Supports adjusting board thickness, width and color; can add anti-static or flame-retardant layers via masterbatches to meet diverse industry safety and performance needs.
High efficiency & energy saving: Uses energy-saving servo motors to reduce power consumption; optional edge trim recycling system boosts material utilization, suitable for large-volume continuous production.
Stable product performance: Heating-air cooling straightening eliminates internal stress, making PP hollow boards resistant to warping, impact and corrosion—service life far longer than traditional corrugated cardboard.
Extended processing compatibility: Optional corona treater enhances surface adhesion, enabling subsequent processes like printing, film lamination and bending—expanding application scenarios.

Technical Parameters

Description	Technical parameters
Material application	PP granules
Board spec.	1200×2-6mm
Line speed	1-8m/min
Max. capacity	260KG/h
Outline size	26000×2200×2500 L×W×H
Weight (approx.)	18 tons
Total installed power	120KW
Actual power consumption	85KW
Air consumption	0.43/min
Water pressure	0.5-0.6MPA
water cycling	0.3/min
Power supply	AC440V±10%60HZ
Water supply	Industry water, without impurity, under filter treatment, water pressure: 4bar, water temp.15-25℃
Working environment	0-40℃

Application

The PP hollow boards produced by this line have unique advantages of "lightweight, durable, waterproof and customizable," with exclusive applications including:

Medical industry turnover: Made into sterile turnover boxes for medical consumables (syringes, dressings) and instrument storage. The non-toxic, easy-to-clean property meets medical hygiene standards, and anti-static variants avoid damaging sensitive medical equipment.
Pet product manufacturing: Processed into foldable pet cages (for cats, small dogs) and transport crates. The hollow structure reduces weight for easy carrying, while the sturdy PP material resists biting and scratching—more durable than wire or plastic mesh cages.
Automotive interior packaging: Used as partition boards in car trunk storage boxes and door panel liners. It has good impact resistance to protect stored items, and its lightweight feature helps reduce vehicle overall weight.
Greenhouse & agriculture: Customized into seedling raising trays and crop partition boards. The waterproof property prevents rot from irrigation water, and the hollow structure provides moderate thermal insulation to promote seed germination.
Retail & logistics display: Made into foldable product display stands (for toys, cosmetics) and temporary storage shelves in warehouses. It can be printed with brand logos for promotion, and folded for easy storage when not in use—saving space compared to wooden shelves.

This PP Hollow Board Production Line is an ideal choice for medical supplies manufacturers, pet product enterprises, automotive interior suppliers and agricultural equipment companies—providing customized, high-performance PP hollow board solutions that replace traditional materials.