1. In-line forming of Z-lock (S-type) interlocking edges for tight, fastener-free panel joints - the hallmark of cold room and cleanroom panels.
2. Precision roller dies and extra edge-forming stations hold lock-seam tolerances across every panel length.
3. EPS, PU, rock wool or glass wool cores; line length and station layout arranged per your plant.
4. Mob/WhatsApp/Wechat: +86 188 0307 8605
5. Email: sara@xinnuomachine.com
Close-up of the drive section of the Z-Lock sandwich panel making machine: interlocking steel bevel gears transfer power at 90 degrees through pillow-block bearings, while the green multi-ribbed conveyor belt carries the panel skin beneath a silver alignment rail. The threaded adjustment assembly on the left fine-tunes roller height and pressure, holding the edge-forming tolerance that Z-lock seams demand.
Low-angle view of the lamination section of the Z-Lock sandwich panel making machine: black rubberized pressure rollers press the top skin against the core beneath the upper plate, guided by a central silver roller and a white plastic guide-rail at the edge. Crimson side rollers and chain-driven red rollers work together here, so the three layers bond evenly and the Z-lock edges stay true before curing and cutting.
Side view of the transmission section of the Z-Lock sandwich panel making machine: a long red horizontal drive shaft supported by pillow blocks runs across the frame, powered by royal-blue motors through a large gearbox and a vertical chain-and-sprocket system. Tiered metal rollers and handwheel adjusters align and compress the materials, keeping the extra edge-locking forming stations synchronized along the line.
High-angle view of the outfeed drive of the Z-Lock sandwich panel making machine: twin royal-blue AC motors with cooling fins sit on a thick mounting plate, their chains and sprockets driving the roller-conveyor bed of small grey rollers behind. Technical plates identify the drive ratings, and the black cables below feed the section as finished Z-lock panels move toward the stacking station.
Z-Lock Sandwich Panel Making Machine - Built by XINNUO Since 1995
XINNUO has designed and built cold roll forming equipment since 1995, accumulating more than 30 years of hands-on engineering experience. Our factory is one of China's experienced producers of sandwich panel making machine lines, including advanced Z-lock (S-type interlock) lines dedicated to cold storage and cleanroom panels.
The Z-lock configuration adds extra edge-forming stations and precision lock-channel rollers to the standard lamination process. The full S-type line runs approximately 65 meters, forming the two steel skins, bonding the insulation core, shaping the interlocking Z-edges and cutting panels to length in one continuous flow - producing panels that lock together tightly without exposed fasteners.
Our range also covers standard lap-joint composite panel lines, single and double-layer forming machines, purlin lines, floor deck lines and custom special profiles. Every line is designed, welded, assembled and test-run in our own workshop, and we have supplied equipment to more than 150 countries with installation guidance, operator training and dependable after-sales support.
FAQ
Q1: What is a Z-Lock sandwich panel making machine?
A: It is a composite panel line that forms an S-type interlocking Z-profile on both edges of each panel as the skins and core are laminated, so adjacent panels snap together tightly without exposed fasteners.
Q2: How do Z-Lock panels join together?
A: Each panel carries a Z-shaped locking channel on one edge and a matching lip on the other; the next panel slides into place and interlocks, creating a tight, continuous seal across the wall or roof.
Q3: Where are Z-Lock panels used?
A: Cold storage rooms, cleanrooms, food processing plants, pharmaceutical facilities and cold-chain warehouses - anywhere that demands an air-tight panel joint and a smooth, easy-to-clean interior surface.
Q4: What core materials can this machine process?
A: EPS foam, polyurethane (PU), rock wool and glass wool. Rock wool is recommended for fire-rated cold rooms, PU for maximum insulation, and EPS for the most economical panels.
Q5: Are the Z-lock edges formed in-line?
A: Yes. The line carries dedicated edge-forming stations with precision lock-channel rollers, so the Z-profile is shaped during the same continuous pass as lamination - keeping seam tolerances consistent panel after panel.
Q6: How long is a full Z-Lock line?
A: The complete S-type line is roughly 65 meters, including decoilers, two forming units, the lamination and curing zone, edge-forming stations and cutting. We provide a layout drawing for your plant.
Q7: Can the same line also produce lap-joint panels?
A: Lap-joint and Z-Lock configurations use different roller sets and edge stations. Tell us your panel range, and we will recommend a single-purpose or switchable line design.
Q8: How do I get a quotation?
A: Send your panel drawing or sample, core material, width and daily output target via WhatsApp/Wechat +86 188 0307 8605 or email sara@xinnuomachine.com. We reply within 24 hours.
XINNUO ROLL FORMING MACHINE CO., LTD is a professional manufacturer specializing in high-quality ibr making machine and advanced ibr machine solutions. With years of industry experience, we provide reliable, efficient, and customized roll forming equipment to meet global roofing production needs, ensuring stable performance, precision forming, and long-term durability for our customers worldwide.
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