PP Hollow Grid Board Production Line

Production Line Introduction:

PP Hollow Grid Board Production Line (polypropylene hollow grid board production line) is a complete set of equipment specifically used for continuous extrusion production of PP (polypropylene) or PP/PE blend hollow grid boards (also known as corrugated boards, honeycomb boards). The entire production line is usually composed of the following modules:

Raw material processing

• Raw materials: New or recycled polypropylene (PP), with the addition of color masterbatches, UV stabilizers, antistatic agents and other additives when necessary.

Drying, metering and mixing systems ensure that the moisture content is less than 0.02%.

Extrusion system

Single-screw or twin-screw high-efficiency extruders (Ø 90-150mm, L/D 33-36), equipped with ceramic heating rings, vacuum venting, melt pumps and static mixers, ensure uniform melt temperature and good plasticization.

Die head and forming

The T-shaped die head of the hanger type has an internal flow channel that has been polished and chrome-plated. The common discharge widths are 1,220mm, 1,800mm, 2,100mm, and 2,450mm.

The vacuum shaping table and the upper and lower counter-pressing forming molds create a regular "I" or "rice" shaped hollow rib structure. By adjusting the vacuum degree and the temperature of the cooling water, the plate thickness can be quickly shaped and controlled (1.5- 12mm).

Cooling and shaping

• Multi-stage circulating water cooling + air cooling to ensure no stress deformation of the sheet. An optional roller shaping device can be equipped to improve the flatness.

Traction and trimming

• Upper and lower crawler traction machine, speed synchronous servo control; The online edge-cutting saw cuts off the waste edges on both sides and automatically recycles them.

Halo/Flame treatment (optional)

Increase the surface tension to ≥38 dyn to meet the subsequent UV printing, lamination and coating requirements.

Online cutting and stacking

• Servo flying saw or fixed-length shearing machine, with a length that can be set arbitrarily from 2 to 6 meters; The automatic tilting stacker can neatly stack the finished products, and an automatic strapping machine can also be installed.

Automatic control

Siemens PLC+10-15" touch screen, formula management, energy consumption monitoring, remote diagnosis; The entire line adopts EtherCAT bus, and the order change time is less than 5 minutes.

Optional functions

• Co-extruded layer: Online co-extruded UV layer or colored layer to enhance weather resistance;

• Online printing: flexographic or digital pre-printing;

• Online crushing and recycling granulation system for recycled materials.

FAQ
Q1. What about the payment way?
A1. By TT, L/C at sight. 30% down payment should be paid after contract is valid, 70% balance should be paid before shipment.

Q2. Installation and stuff training available from you?
A2. Yes, we have rich engineers around the world which can send to your factory and train your workers. Also we can online guide your members.

Q3. How long is the guarantee?
A3. We offer you high quality machines with 12 months guarantee and reply you as soon as possible within 6 hours.

Q4. If the machine some parts is broken one day, how can we get help from you?
A4. We will send you spare parts free of charge If they are in warranty, not including easy-broken parts. For easy-broken parts, we will only charge a cost fee.

Q5.How does your factory do regarding quality control?
A5.We have passed the IS09001:2000 Quality Management System and CE certificate and we have a special QC department in charge of products' quality. If you also need other certificates, we also can help to apply.

Q6. What is your packaging?
A6. Our conventional packaging is: After doing the anti-rust treatment, wrap the plastic film around the machine and then fix the machine on the wooden bracket.

Q7. How can we check the machines before delivery?
A7. We can provide online checking when testing the machine on site. We will take and prepare detailed testing videos for your checking before the delivery. We accept third-party testing. Except above points,we will provide detailed testing report.

High-Performance PP Hollow Grid Board Production Line Overview

Investing in a high-quality PP Hollow Grid Board Production Line provides a cost-effective, turnkey solution for producing premium corrugated sheets. As a leading category of our Plastic Sheet Production Line offerings, this advanced machinery processes multiple thermoplastics like PP, PC, and PE. Our equipment delivers high extrusion output and exceptionally stable performance. This empowers businesses to manufacture resilient, lightweight hollow boards for diverse industrial applications. Whether you are scaling up operations or establishing a new facility, our machines ensure consistent, high-yield manufacturing.

Advanced Features of Our PP Corrugated Sheet Making Machines

Our PP corrugated sheet making machines are designed to maximize operational efficiency and minimize production costs. They feature cutting-edge energy-saving technology and fully automated control systems. This integration offers seamless operation and significantly reduces manual intervention. Precision calibration mechanisms guarantee that every extruded board meets strict dimensional tolerances. Furthermore, our experienced R&D team backs the equipment design with multiple patents in plastic extrusion technology. This deep technical expertise ensures a reliable, high-quality final board output. The resulting products consistently outpace standard market offerings in structural strength and surface finish.

Core Components of the PP Hollow Grid Board Extrusion Line

To demonstrate our technical expertise, we have detailed the primary functional parts of our extrusion line. Each component is engineered for maximum durability and continuous operation.

High-Efficiency Single Screw Extruder

The heart of the system is the high-efficiency single screw extruder. This component ensures uniform melting, optimal plasticization, and high-capacity output for PP and PC materials. Its specialized screw geometry handles high-volume processing while maintaining excellent melt stability.

Precision Die Head & Vacuum Calibration System

The precision die head and vacuum calibration system work together to achieve the distinct cellular structure of corrugated plastic. The specialized die head shapes the molten polymer accurately. Meanwhile, the advanced vacuum calibration table ensures exact board thickness and smooth surfaces. It also maintains the structural integrity of the hollow grids during the rapid cooling phase.

Haul-off, Corona Treatment & Cutting System

Our downstream equipment is fully automated to streamline the final stages of production. A robust haul-off unit maintains consistent line speed. Simultaneously, the integrated corona treatment system prepares board surfaces for high-quality printing and adhesion. The precision cutting system guarantees accurate sizing before the finished sheets are stacked for distribution. For specialized industry requirements, these components can be adapted similarly to our PLC Controlled Hollow Grid Sheet Line for Logistics.

Technical Parameters & Machine Specifications

Understanding the technical capabilities of your extrusion equipment is essential for planning manufacturing output. The table below outlines the standard specifications for our machinery. If you require specialized dimensions, explore our High-Yield Custom Hollow Grid Board Production Line options. Our highly skilled technical team can provide fully customized specifications to meet your unique facility requirements.

Versatile Applications of PP/PC Hollow Grid Sheets

The versatility of the boards produced by this extrusion line ensures a rapid return on investment. These products open doors to multiple lucrative industries. PP and PC hollow grid sheets are highly valued globally for being lightweight, waterproof, and impact-resistant. In the logistics and agriculture sectors, they serve as durable, moisture-resistant reusable packaging boxes that replace traditional cardboard. Additionally, their smooth, corona-treated surfaces make them ideal for high-quality UV printing, advertising signboards, and retail displays. The construction industry frequently utilizes these panels for excellent temporary floor, wall, and window protection during renovations. Furthermore, they provide lightweight structural support for automotive interior backing, including vehicle trunks and seat backs.

Why Choose Zhongrui Plastic Machinery for Your Extrusion Needs?

As a professional plastic extrusion machinery manufacturer, Qingdao Zhongrui Plastic Machinery Co., Ltd. is committed to delivering manufacturing excellence. With a decades-long internationalization journey, we deeply understand the diverse needs of global plastic processors. We pride ourselves on offering reasonable pricing that provides immense value without compromising on machinery quality. Partnering with us grants you access to a highly skilled professional technical team. We also provide a dedicated 7*24 hours after-sales service team ready to offer global support and turnkey solutions. As a trusted manufacturer, contact us today to request a custom quote for your new PP Hollow Grid Board Production Line.

Frequently Asked Questions (FAQ)

What materials can this hollow grid board production line process?
Our production line is highly versatile and engineered to efficiently process PP, PC, and PE materials. This capability allows you to manufacture a wide variety of high-quality corrugated plastic sheets.

Can you provide customized extrusion machinery solutions?
Yes, our experienced R&D team can fully customize the machine specifications. We can adjust board width, thickness capacities, and output rates to perfectly match your specific manufacturing requirements.

What kind of after-sales support do you offer for overseas buyers?
We provide a dedicated 7*24 hours after-sales service team to support our global clients. This includes comprehensive technical support, installation guidance, and turnkey solutions to ensure smooth production.

Are your plastic corrugated sheet making machines cost-effective?
Absolutely. We offer reasonable pricing that delivers exceptional value without compromising on machinery quality. This commitment is backed by our decades of successful export experience.