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Clean room sandwich panel

System Overview

A cleanroom sandwich panel is the fundamental architectural element for engineering high-performance, contamination-controlled environments. Designed to construct completely flush, airtight cleanroom wall and ceiling systems, these premium composite panels prevent particle accumulation and facilitate stringent daily disinfection protocols.

Engineered with customizable insulated cores—including Rock Wool, PU/PIR, and Aluminum Honeycomb—these panels provide exceptional thermal regulation, acoustic insulation, and fire resistance. They are the industry standard for strict environmental control in pharmaceuticals, microelectronics, food processing, and healthcare. Key architectural advantages include:

  • Seamless & Flush Integration: Precision-engineered tight joints eliminate micro-gaps, ensuring zero dust generation and allowing for rapid, thorough wipe-downs.
  • Advanced Environmental Control: High-performance functional cores deliver superior thermal insulation and humidity regulation, significantly reducing HVAC energy loads.
  • Strict Industry Compliance: Features highly corrosion-resistant and antistatic surfaces tailored to meet the rigorous demands of GMP and ISO 14644 standards.

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Cleanroom Panel Manufacturer Since 2005

Cleanroom Sandwich Panel — Wall & Ceiling Panels

Rock wool MGO + rock wool PU / PIR Aluminum honeycomb HPL GB/T 9978 fire-tested

A cleanroom sandwich panel is a main building element in cleanroom engineering — flame-retardant, sound-insulating and environmentally friendly. With no dust accumulation and no dust generation, enhanced antistatic performance and a strongly corrosion-resistant surface, it is the core of every flush, easy-clean cleanroom wall system. As an experienced cleanroom panel supplier, Wonclean offers rock wool, MGO + rock wool, PU/PIR, aluminum honeycomb, paper honeycomb and HPL cores.

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What Is a Cleanroom Sandwich Panel?

A cleanroom sandwich panel is a composite board made of two facing sheets bonded to a functional core. It delivers flame retardancy, sound insulation and environmental protection, and is engineered so the finished wall or ceiling has no dust accumulation and no dust generation. The surface enhances antistatic performance and resists corrosion, meeting the demands of pharmaceutical, electronics, food and healthcare environments. Panels install into a flush, gap-free, easy-to-disinfect surface and integrate directly with our cleanroom ceiling system and doors & windows.

Cleanroom sandwich panel wall in a controlled environment Flush cleanroom wall panels with corrosion-resistant surface Metal-faced cleanroom sandwich panels by Wonclean

Panel Anatomy & Joint Detail

Tongue-and-groove edge
Facing sheets — metal (pre-coated / galvanized steel, stainless steel or aluminum) or 4 mm HPL; antistatic, dust-free, corrosion-resistant.
Functional core — rock wool · MGO + rock wool · PU · PIR · aluminum honeycomb · paper honeycomb.
Joint & seal — tongue-and-groove / cam-lock connection for a flush, airtight, gap-free wall.
No dust accumulation No dust generation Antistatic surface Corrosion resistant Flame retardant

Choose Your Core Material

Core Fire performance Key strength Typical use
Rock wool Non-combustible Fire resistance & sound insulation Electronics & pharma plants
MGO + rock wool Non-combustible Moisture-proof, high strength High-humidity & fire-safe areas
PU / PIR Self-extinguishing (PIR > PU) Superior insulation, low density Cold storage & standard cleanrooms
Aluminum honeycomb Non-flammable Extreme flatness, high rigidity-to-weight Ceilings & large-span partitions
Paper honeycomb Flame-retardant facing Lightweight, economical Infill panels & doors
HPL Fire resistant Chemical & impact resistance, decorative Medical & lab wall surfaces

Also available: EPS cleanroom panel · HPL sandwich panel · Medical cleanroom panel. Panel thickness, width and facing are made to order — tell us your fire and hygiene requirements and we recommend the right build.

Core Materials in Detail

Rock wool cleanroom sandwich panel core
Made from basalt, rock wool is a heat-insulating, flame-insulating and sound-absorbing core for walls and ceilings with fire-resistance requirements — the standard choice in electronics and pharmaceutical plants. Our metal-faced rock wool partition has passed national fire-resistance type testing to GB/T 9978 at an MA / CNAS / iLac-MRA-accredited centre (report available on request).
Glass magnesium MGO rock wool cleanroom panel
Glass-magnesium board offers high-temperature resistance, flame retardancy and sound absorption. It is waterproof, moisture-proof, non-toxic and high-strength, and combines with rock wool to make a composite panel ideal for high-humidity and fire-safe areas.
PIR PU cleanroom sandwich panel core
Polyurethane (PU) gives excellent insulation at low density. PIR is an upgraded PU containing an isocyanurate ring — its biggest advantage is superior flame-retardant performance and temperature resistance, making it the safer choice for high-standard cleanroom and cold-room projects.
Aluminum honeycomb cleanroom panel core
The aluminum hexagonal honeycomb core combines low density with high rigidity, giving the highest rigidity-to-weight ratio and excellent flatness. It is widely used for cleanroom partitions and ceilings where the surface must stay perfectly flat and safe for walk-on maintenance.
HPL cleanroom sandwich panel surface
HPL (high-pressure laminate) is 4 mm thick and built from more than 40 layers of paper impregnated with melamine and phenolic resin. It offers fire resistance, thermal insulation, corrosion and impact resistance, a smooth decorative surface and a wide range of colors — ideal for medical and laboratory wall surfaces. See also the HPL sandwich panel.
Need panel specs, a sample or a price? Talk to an engineer.

Surface, Joint & Size Options

Facing options Metal (pre-coated / galvanized steel, stainless steel, aluminum) or 4 mm HPL
Surface properties Antistatic, dust-free, corrosion-resistant, flush & gap-free
Thickness / width / length Customizable to project requirements
Jointing Tongue-and-groove / cam-lock — flush, airtight wall
Fire performance Rock wool & MGO non-combustible; rock wool partition tested to GB/T 9978

Where Our Panels Are Used

GMP-grade walls and ceilings with seamless, easy-disinfect surfaces.
Antistatic, dust-free enclosures for precision manufacturing.
Hygienic, moisture-resistant panels for food-grade environments.
HPL and metal-faced panels for labs, hospitals and cleanrooms.

Technical Insights & FAQ

Which core should I choose for strict fire requirements?

Rock wool and MGO + rock wool are non-combustible and best for strict fire codes. Our metal-faced rock wool partition has passed GB/T 9978 fire-resistance type testing at an accredited national centre — the report is available on request.

How do I choose between PU and PIR panels?

Both give excellent insulation at low density. PIR is an upgraded PU with superior flame retardancy and better temperature resistance, making it the safer option for high-standard pharmaceutical and cold-room projects.

Can these panels handle high-humidity environments?

Yes. The MGO + rock wool (glass-magnesium) and HPL panels are moisture-proof and resist warping or mould, making them well suited to humid cleanroom conditions.

Why is aluminum honeycomb used for large-span ceilings?

Its hexagonal structure gives the highest rigidity-to-weight ratio, so the ceiling stays perfectly flat and can safely be walked on during maintenance and inspection.

How do the panels join, and are they airtight and antistatic?

Panels connect with a tongue-and-groove / cam-lock joint to form a flush, airtight, gap-free wall with no dust accumulation. Surfaces are corrosion-resistant and can enhance antistatic performance.

What sizes and facings are available?

Thickness, width and length are made to order. Facings include pre-coated or galvanized steel, stainless steel, aluminum, or 4 mm HPL in multiple colors. Send us your specification and we confirm the data sheet before production.

Get Your Cleanroom Panel Quote

Tell us your core material, fire requirement, surface and panel sizes. Our engineers recommend the right build and send a competitive factory-direct price — with a free sample on request. Typical reply within 24 hours.

Email: Info@wonclean.com Phone: +86 136 7197 9988 Allen WhatsApp: +86 159 5093 8878 Joy Available 24/7
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