Automatic Cross-Linked HDPE Heat Shrinkable Sleeve Manufacturing Machine for Pipeline Joint Coating

Engineered by Qingdao Huashida Machinery Co., Ltd. - a pioneer with over 20 years of plastic machinery expertise - this high-efficiency Cross-Linked HDPE Heat Shrinkable Sleeve & Tape Production Line is a fully automated, intelligent system designed for manufacturing premium pipeline anti-corrosion materials.

By integrating state-of-the-art plastic extrusion, irradiation crosslinking, and online lamination technologies, this versatile line produces both standard 2-layer PE heat shrinkable tapes/sleeves and upgraded 3-layer fiberglass-reinforced heat shrinkable sleeves. It is the ultimate solution for field joint coating (FJC), girth weld protection, and pipeline repair across municipal, industrial, and oil & gas sectors.

• Standard Products: 650mm width, Two-layer PE heat shrinkable tape, sleeve-type heat shrinkable sleeves, clip-on heat shrinkable sleeves
• Upgraded Products: Three-layer fiberglass reinforced PE heat shrinkable tape/sleeve

This production line manufactures joint-sealing materials compatible with a massive range of pipeline systems:

• Oil & Gas: Long-distance transmission pipelines, 3PE/2PE steel pipes, and seamless steel pipes
• District Heating: Polyurethane (PU) foam pre-insulated pipeline joint closures (Black & Yellow jacket pipes)
• Municipal & Drainage: Hollow wall spiral wound pipes, steel-reinforced spiral corrugated pipes, plastic-steel spiral wound pipes, and PVC-U sewage pipes
• Maintenance: Pipeline damage repair and girth weld straight joint field coating

Complete Line Structure:

1. RS-800 PE Backing Extrusion Line: Output 150-200kg/h, responsible for high-purity LDPE substrate forming
2. TJ-700 Adhesive Coating Line: Completes online adhesive coating, stretching, and shaping
3. Fiberglass Reinforced Upgrade Configuration: Fiber unwinding, heating, and leveling equipment, 65/30 single-screw extruder, special T-shaped flat-head die
4. Auxiliary & Control System: Irradiation crosslinking equipment, cooling system, haul-off unit, electric control system, ABB main motor

• Working Place: Indoor, no dangerous area
• Power Supply: 380V 50HZ (-10%, +5%)
• Humidity: ≤85%, no condensation
• Circulating Cooling Water: ~0.5m³/min (≤20ºC, 0.3Mpa)
• Compressed Air: ~0.4m³/min, >0.5Mpa

1. Substrate Extrusion: High-purity Low-Density Polyethylene (LDPE) or HDPE is processed via a high-output single-screw extruder into a uniform backing film
2. Irradiation Crosslinking: The PE substrate undergoes electron-beam irradiation, giving the material its thermal "shape memory," superior tensile strength, and flame-retardant properties
3. Online Lamination & Shaping: The film undergoes precision secondary stretching and real-time bonding with imported hot-melt adhesive, guaranteeing high peel strength and stable shrink ratios

Adds fiberglass unwinding, heating, and leveling steps on the standard process, realizes one-pass continuous forming of three-layer fiber-reinforced products, with higher strength and better shrinkage performance

• High Efficiency & Low Consumption: Innovative single-screw extruder with direct-connection technology, low energy consumption, high output, long service life, maximizes production profit
• Intelligent Control: PLC control system, ABB main motor, controllable production speed, fully automated operation, and reduces labor costs
• Stable Product Quality: Advanced T-shaped molds and coat hanger-style flow channels, high-precision mirror rollers, and patented secondary stretching equipment ensure uniform substrate thickness and low scrap rate
• Multifunctional Production: One set of equipment can produce various heat-shrinkable tape and sleeve products, avoiding redundant equipment investment
• Premium Configuration: Adopts top-brand electrical components, imported high-quality adhesive raw materials (DuPont, Sumitomo, Hanwha), stable performance, low failure rate
• Industry Leading Technology: Three-layer one-pass molding technology, reaching world-class level in equipment structure, vulcanization and product performance

Our line produces products that fully comply with international standards (ASTM, DIN, GB/T):

• Tensile Strength: 15-20 MPa (ASTM D638)
• Elongation at Break: ≥ 350%
• Peel Strength to Steel/PE: > 150 N/cm (ASTM D1000)
• Shear Strength: ≥ 100 N/cm (DIN 30 672)
• Adhesive Softening Point: 70-80°C (ASTM E 28)
• Water Absorption Rate: ≤ 0.05% (ASTM D570)

1. 30% of the contract amount as a deposit within 2 working days after contract signing
2. 67% of the contract amount before goods delivery
3. 3% of the contract amount within 10 days after finishing installation and commissioning

• Warranty Period: 12 months for mechanical parts, 6 months for electrical parts from the date of equipment receipt
• Free Services: Free technical documents, electrical drawings, and on-site operator training
• Installation & Commissioning: Professional technicians dispatched for on-site guidance; buyer covers round-trip tickets, accommodation, transportation, insurance, and USD 150 per person per day allowance
• Long-term Support: Lifetime technical consultation, spare parts supply, and after-sales troubleshooting

Delivery Time: Production and delivery are completed within 90 days after receiving the deposit

Packaging & Shipping: Standard packaging with wrap film; wooden pallets or cartons are available at the buyer's cost