Sandwich Panel Production Line
China’s most authoritative cleanroom panel production line solution: full-process decoiling, film lamination, roll forming, cutting, adhesive application, core filling, and hot pressing. Modular equipment configurable at will, with flexible capacity scalable on demand—building your clean factory!
what is sandwich panel
Value & Applications of Sandwich Panels
Sandwich panels are composite boards typically bonded from pre-painted steel or stainless-steel facings to a rock-wool core, offering exceptional structural strength, thermal insulation, and hygiene in one. Engineered for partition walls and ceilings in cleanrooms and dust‑free workshops, they ensure ISO‑class cleanliness, minimize energy loss, resist fire and corrosion, and enable rapid, low‑labor installation.
Pharmaceutical & Biotech Cleanrooms
Electronics & Semiconductor Facilities
Food Processing Plants
End‑to‑End Production Process Overview
Decoiling & Leveling: Unwind pre‑painted steel or stainless coils and run them through a leveling machine to ensure flatness.
Film Lamination: Apply protective or decorative film to both panel faces to prevent scratches and allow custom finishes.
Roll Forming: Pass the facings through synchronized rollers to create tongue‑and‑groove edges and sealing lips.
Cutting & Punching: CNC‑trim panels to length and punch mounting holes, cut‑outs, or vents per design.
Adhesive Application: Dispense structural or PU adhesive into the formed grooves to bond the core material.
Core Filling: Insert rock‑wool blankets or inject foam between facings to fill the panel cavity.
Facing Alignment: Use vacuum lifters or robotic arms to place and align the top facing over the core assembly.
Hot Pressing: Heat and press the sandwich assembly under controlled temperature and pressure to cure the adhesive.
Cooling & Curing: Cool the panels via rollers or air jets to solidify the bond and reach handling temperature.
Final Cutting & Inspection: Trim panels to final dimensions, then perform quality checks on thickness, adhesion, flatness, and fire rating before packaging.
Key Processes & Supporting Equipment
Decoiling & Leveling: Uncoiler and plate leveler
Lamination: Film laminator
Roll Forming: Roll forming machine
Core Filling: Manual or semi-auto loading of rock-wool blankets or foam boards
Adhesive Application: Automatic adhesive dispenser
Cutting & Punching: CNC or hydraulic shearing machine
Facing Alignment: Panel transfer & flip unit
Hot Pressing: Heated platen press with in-line conveyor
Palletizing System: Palletizer
Typical application solutions
Wall Cladding / Cold Room Panel
An economical and aesthetically pleasing wall cladding panel, widely used for interior and exterior walls of industrial, commercial, and residential buildings, as well as various decorative surfaces, offering a strong contemporary appeal.
Product Features:
Lightweight, good sound and thermal insulation, and easy to install.
Applicable Materials
| Face Sheet Thickness | 0.4–0.8 mm pre‑painted steel |
| Core Material | EPS, 12-25 kg/m³ |
| PU, 35-45 kg/m³ | |
| Rock Wool, 120-160kg/m³ | |
| Edge Steel Strip | perforated steel strip |
Acoustic Panel
Industrial sound‑absorbing panels are primarily used in gas engine rooms, various equipment rooms, high‑noise facilities, and public buildings. They deliver superior noise reduction and meet Class A fire‑protection standards.
Applicable Materials
| Sound‑Absorbing Panel Facings | 0.5–1.0 mm pre‑painted steel or galvanized steel, micro‑perforated (Ø 3 mm holes, 6 mm pitch, arranged at 60°) |
| Core Material | Acoustic rock wool |
| Perimeter Edging | Galvanized steel strip edging on all sides, mechanically interlocked and welded, bonded with special adhesive |
Drying‑Tunnel Panel
Drying‑tunnel panels are widely used in curing oven systems for the coatings industry, providing excellent high‑temperature resistance.
Applicable Materials
| Face Sheet Thickness | 0.4–0.8 mm Pre‑painted Steel / Galvanized Steel / Stainless Steel |
| Core Material | Rock Wool, 120–160 kg/m³ |
| Edge Steel Strip | Perforated Steel Strip |
Building‑Envelope Panel
Cleanroom‑grade panels engineered for large‑area partitions and ceilings in electronics, pharmaceutical facilities, hospital operating rooms, food processing plants, and laboratories.
Product Features:
Non‑combustible, excellent acoustic and thermal insulation, and easy installation.
Applicable Materials
| Face Sheet Thickness | 0.4–0.8 mm Pre‑Painted Steel / Electro‑Galvanized & Hot‑Dip Galvanized Steel / Stainless Steel |
| Core Material | Rock Wool, 120–160 kg/m³ |
| MgO Board | |
| Gypsum Board | |
| Paper & Aluminum Honeycomb Panel | |
| Edge Steel Strip | Bow‑Shaped 0.6–0.8 mm Galvanized Steel Sheet |
Sandwich Panel Core Materials & Functions
Rock wool core panel
- Function & Key Properties
- Typical Facings
- Main Application Scenarios
MgO panel
- Function & Key Properties
- Typical Facings
- Main Application Scenarios
Calcium silicate core panel
- Function & Key Properties
- Typical Facings
- Main Application Scenarios
Aluminum honeycomb sandwich panel
- Function & Key Properties
- Typical Facings
- Main Application Scenarios
PU foam sandwich panel
- Function & Key Properties
- Typical Facings
- Main Application Scenarios
FAQs
Why is the final step of the sandwich panel production line hot pressing instead of cold pressing?
Hot pressing accelerates adhesive cure by applying heat and pressure simultaneously. Whereas a cold press requires at least 7 hours at ambient temperature to achieve full polymer cross-linking, hot pressing completes cure in approximately 10 minutes, dramatically reducing cycle time and increasing throughput.
What is the function of the sandwich panel frame and how is it manufactured?
We employ a Panel Frame Roll Forming Machine to continuously roll coil stock into C- or U-shaped profiles. The metal frame enhances the panel’s compressive strength and provides rigid edge support, while its standardized profile simplifies on-site handling and installation.
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Email Address
market2@rsm-machinery.com
+86-13917564315
