Automatic Cold Applied PE Tape Extrusion Coating Line for Underground Steel Pipe

Turnkey Cold Applied PE Anti-Corrosion Tape Production Line for Buried Pipeline Protection

This Automatic Cold Applied PE Tape Extrusion Coating Line is engineered for manufacturing cold applied polyethylene anti-corrosion tape used on underground steel pipe, oil and gas transmission pipelines, natural gas distribution networks and municipal buried pipeline systems. It combines PE base film extrusion, corona surface treatment, slot-die adhesive coating, slitting and multi-station rewinding in one PLC-controlled automatic production line, so anti-corrosion tape manufacturers can run continuous, repeatable output with fewer operators and less manual adjustment.

Built around a heavy-duty SJ-75X30 single-screw extruder with a hydraulic screen changer and a type 1000 die head, the line converts HDPE, LDPE and adhesive compounds into a uniform multi-layer cold applied PE tape with consistent peel strength, impact resistance and chemical durability. It delivers 160-200kg/h output at a maximum tape width of 1000mm, giving pipeline tape making factories the throughput for large steel pipe wrapping tape orders.

Backed by CE and ISO9001 certification, 21+ years of export experience and 400+ overseas customers, Huashida provides full OEM and ODM customization. Buyers can configure tape width up to 1000mm, base film thickness 0.2-1mm, adhesive thickness 0.1-0.5mm, voltage and PLC brand (Delta) to suit regional power and project requirements. Tapes made on this line are commonly specified to SY/T 0414 and DIN 30672 pipeline tape standards. Every shipment includes overseas installation guidance, free technical support and a 12-month warranty.

1. PE Base Film Extrusion A vacuum automatic feeder and hopper dryer supply dried HDPE and LDPE to the SJ-75X30 single-screw extruder, where the material is fully melted and plasticized. The melt passes through a hydraulic screen changer and the die head mold (type 1000), then is shaped by multi-roller tape casting. This automated PE tape extrusion stage gives stable base film thickness (0.2-1mm), flat surfaces and strong inter-layer adhesion for underground steel pipe anti-corrosion tape.
2. Corona Treatment & Slot-Die Adhesive Coating Before coating, the film passes the integrated 1300mm silicone stick corona processor, which raises surface energy so the hot melt adhesive bonds firmly to the polyethylene. The slot-die coating machine then applies 0.1-0.5mm adhesive evenly on one or both sides, supported by a constant pressure system, force-feed device and 300L adhesive reactor for uninterrupted batches. Magnetic powder brakes and clutches hold web tension steady, producing cold applied PE anti-corrosion tape with void-free bonding and lasting corrosion protection.
3. Slitting & Multi-Station Rewinding The coated master roll is slit to the required commercial widths (up to 1000mm) and wound on the multi-station rewinding unit. Finished steel pipe wrapping tape rolls are ready for packaging, container loading and delivery to pipeline contractors and tape distributors worldwide.

• Full PLC Automation: Delta PLC with frequency converters synchronizes extrusion, coating and rewinding, reducing operator dependence and keeping cold applied PE tape quality stable from batch to batch.
• Slot-Die Coating Precision: Uniform 0.1-0.5mm hot melt adhesive on single or double sides gives void-free bonding and consistent peel strength for underground steel pipe protection.
• Corona Treatment Integration: Higher surface energy before coating improves adhesive bonding to the PE substrate and reduces delamination risk in long-term buried service.
• 160-200kg/h High Output: Sustained throughput keeps large anti-corrosion tape production orders on schedule.
• 1000mm Maximum Tape Width: One line serves multiple tape width specifications for pipe wrapping tape without equipment changeover.
• Stable Tension Control: Magnetic powder brakes and clutches, a constant pressure system and a force-feed device protect film and coating consistency at high speed.
• OEM and ODM Service: Customize tape width, base film thickness, adhesive thickness, voltage and PLC brand to produce your own branded steel pipe anti-corrosion tape.
• 21+ Years Export Experience: 400+ overseas customers across Russia, Kazakhstan, Iran, UAE, Turkey, Nigeria and 60+ countries.