Why Choose Pupanel 20mm Sandwich Panel?
- 20mm sandwich panels manufacturer in China with over 25 years of production experience. Using advanced Italian equipment and on-site foaming technology.
- A variety of materials with PU/PIR, EPS, Rockwool, etc. Pupanel offers professional customization services to meet all your project requirements.
- The 20mm sandwich panel is lightweight, high-strength, and installs easily.
- All panels meet ISO 9001 and CE standards with good quality performance.
Your Reliable 20mm Sandwich Panel Supplier
Pupanel 20mm sandwich panels are designed for industrial, commercial, and special projects including cold storage, cleanrooms, modular buildings,s and factory partitions. They have good insulation, fire resistance, and acoustic performance. They also have excellent dimensional stability, resistance to aging, and energy efficiency.
Our panels have already been exported to more than 50 countries and are trusted by clients across the construction, HVAC, and cold storage industries. We support OEM and non-standard customization, including thicknesses, lengths, surface finishes, and colors, for 20mm sandwich panels. All panels exhibit high-dimensional stability and anti-aging properties. Ensure reliable, long-lasting performance for your project.
Our 20mm Sandwich Panels
Solid structure, great insulation, and waterproof. Perfect for cold storage or warehouse dividers – they’ll help you save on energy.
Strong foam, tough as nails, and super reliable. Use them for factory walls or equipment enclosures – they last ages with no problems.
Super flat and hold their shape really well. Great choice for industrial or commercial, and they’re easy to put up.
Fireproof, water-resistant, and don’t wear out fast. Ideal for cleanrooms or anywhere you need some sound control.
Meets Class A fire safety standards. It is an ideal safety choice for offices and other locations.
Lightweight, keep the temperature stable, and looks pretty good too. Make building cold rooms way easier and more efficient.
Its smooth surface is easy to clean. It is totally essential for laboratories and pharmaceutical areas, as it keeps everything nice and hygienic.
Reinforced edges, extra tough. Perfect for heavy-duty industrial partitions or any spot that needs something strong and long-lasting.
Features of 20mm Sandwich Panel
These panels are only 20 mm thick, which makes them much lighter than traditional heavy boards. This reduces both shipping costs and installation time, helping you to keep your project on budget.
They’re slim yet strong, providing more usable space. They are ideal for cold storage, clean rooms and factory walls.
Thanks to their standard sizes and super-flat surfaces, they fit together easily on site. There’s no fuss or delays — just faster construction.
Despite their slim design, they are built to maintain an appropriate temperature. Saving energy and money over time.
Use them in cold rooms, clean rooms, equipment enclosures, boxes, or light industrial partitions. They’re flexible enough to work in all kinds of settings.
Whether you need a custom size, colour, finish, or branding. We offer full customisation services to ensure everything perfectly meets your requirements.
They can withstand squishing, bending, and long-term wear. They retain their shape and strength, keeping your project safe and solid over the long term.
We have already shipped to over 50 countries, and our products are used in cold storage, clean rooms and factories everywhere. You can count on proven performance.
Exceptional Thermal Efficiency
Our 20 mm sandwich panels are highly energy efficient. They have low heat conductivity (0.020–0.045 W/m·K) and a dense core. This helps maintain consistent indoor temperatures and reduces energy bills over time. They are ideal for cold storage, clean rooms, and modular buildings.
Moisture and Fire Resistance
These robust panels are designed to withstand harsh conditions while providing reliable insulation performance. Most of our PU/PIR and Rockwool options meet Class A fire safety standards, helping to keep your facilities safe and compliant.
Versatile Materials and Customisation
The cores available are PU/PIR, EPS, or Rockwool, and you can customise the thickness, size, colour, and surface finish to your requirements. We can also assist with load calculations and thermal analysis to guarantee everything functions effectively, from performance to installation.
Applications of 20mm Sandwich Panel
20 mm panels are ideal for maintaining a constant temperature in small to medium cold rooms. They are commonly used for partition walls, ceilings, and equipment covers.
These panels have smooth surfaces that can be wiped clean. This makes them ideal for environments such as pharmaceutical laboratories, electronics production lines, and testing laboratories. In these areas, it is essential that surfaces remain clean.
They’re lightweight and easy to assemble, making them ideal for quickly dividing spaces or setting up enclosures in large industrial buildings.
A combination of thinness and strength makes 20 mm panels a popular choice for compact modular units, temporary offices, inspection rooms, and small machine rooms.
They are strong and well-insulated, making them ideal for protecting equipment such as pumps, compressors, and air ducts.
- Our Factory
- Project Case
If you’re looking for lighter, easier-to-install materials, PUR/PIR 20mm panels are an ideal choice. They can reduce your shipping costs.
For applications in laboratories, clean rooms, and other locations with extremely high safety and sound insulation requirements. You can opt for 20 mm Rockwool panels, which provide excellent fire resistance and sound insulation.
20mm sandwich panels use less material, are lighter, and can be installed faster than bulky traditional panels. This reduces your overall project cost without compromising insulation or fire resistance.
That’s right—they’re lightweight, sturdy, and easy to install. They’re an excellent choice for housings or protective shields for machinery, saving space while ensuring equipment safety through their good insulation and stable construction.
What is a 20mm Sandwich Panel?
A sandwich panel is a high-performance, self-supporting composite panel. It is made by bonding a core material between two durable surface layers. The main material can be polyurethane (PU), polyisocyanurate (PIR), expanded polystyrene (EPS), rock wool, or honeycomb, and it keeps heat in, stops fires, stops noise, and helps to hold things together. In recent years, people have chosen sandwich panels more often for industrial, commercial, and specialised projects. They allow architects to design clean, modern,and elegant buildings, while providing building owners with practical, long-lasting solutions.
20mm Sandwich Panel Production Process
Material
Prepare the panel and core material — such as polyurethane (PU), polyisocyanurate (PIR), expanded polystyrene (EPS), or rock wool — to ensure consistent quality.
Unwinding
Unroll the rolled metal panel or substrate and place it on the production line for processing.
PU Edge Trimming
Trim the panel edges to create a smooth edge banding, making the panel more attractive and airtight.
Filling
To ensure consistent panel performance and uniform thickness, fill the middle of the panel with foam or another core material.
Curing
The panel becomes strong and durable by hardening the core material at a controlled temperature.
Preheating
Preheating the panel improves adhesion, enabling the core material and panel to bond more tightly.
Pressing
Pressure is applied to press the core material and the panel together, ensuring flatness and mechanical strength.
Laminating/Coating
To enhance durability, water resistance, and aesthetics, the panel surface can be coated or covered with a film as needed.
Slitting/Cutting
They are cut to size according to customer requirements, with neat, precise edges.
Final Inspection & Packaging
Inspect the panel’s dimensions, flatness, and filling condition. Once everything is confirmed to be correct, it can be packaged and shipped.
Why Are 20mm Panels Becoming Increasingly Popular?
20 mm panels are becoming more and more popular with customers because they offer a great balance of cost, strength, and insulation. These panels are particularly favoured by many factory owners for indoor partitions, cleanroom wall,s and enclosing machinery— places where heavy insulation isn’t necessary. They’re also lighter to ship and quicker to install, which helps to keep up with tight project timelines.
20mm Sandwich Panel Material Comparison
| Material | Fire Resistance | Weight | Thermal Insulation | Cost | Application |
| PU (Polyurethane) | Moderate | Light | Very good | Medium | Cold rooms, modular units, factory partitions |
| PIR (Polyisocyanurate) | High | Light | Very good | Mid-High | Cleanrooms, industrial walls, and areas with higher fire requirements |
| EPS (Expanded Polystyrene) | Low | Very light | Good | Low | Budget projects, temporary buildings, warehouse dividers |
| Rockwool | Excellent | Heavy | Moderate | Mid-High | Cleanrooms, fire-rated walls, acoustic partitions |
| Glass Wool | Excellent | Light-Medium | Moderate | Medium | Offices, acoustic rooms, and general wall partitions |
| Honeycomb | Low–Moderate | Very light | Moderate | Medium–High | Decorative panels, lightweight structures, vehicle interiors |
| Rockwool with PU Edge Sealing | Excellent | Medium-Heavy | Moderate | High | Heavy-duty industrial partitions, fire-rated structures needing cleaner edges |
How do I choose the right 20mm sandwich panel for my project?
If fire safety is a top priority, opt for PIR or rockwool; if you are looking for solid all-round insulation, choose PU/PIR; and if you are watching your budget, go for EPS. Then consider your project’s size, the environment it’s in, and whether you need custom lengths, colours, or surface finishes. We are at your service to provide you with technical advice and design tips to help you make the right choice.
Using the right 20 mm sandwich panel will make your project lighter, faster, and far more efficient. Pupanel delivers solid quality, reliable performance, and custom panels that fit your needs, whether it’s the material or the way you use it. Just tell us what you’re looking for, and we’ll help you choose the best option. Contact us now!
