EVA waterproof membrane production line

Product Definition

EVA waterproof membrane production line is a complete set of equipment that processes HDPE resin and additives into high-performance waterproof geomembrane through precise batching, extrusion, molding, cooling, online detection and winding processes. It can produce geomembrane with stable quality and excellent anti-seepage performance.

Core Process Routes

Flat Extrusion Casting Method (High Speed & Composite)

Process: Raw material mixing → Extrusion → Flat die → Three-roll calendering cooling → Traction → Surface treatment → Inspection → Winding

Features: Production speed is 1.5-2 times that of blow molding, uniform thickness, smooth surface; can directly compound with geotextile; suitable for thin film, high-speed and low-cost production

Blow Molding Method

Process: Raw material mixing → Extrusion → Annular die → Bubble cooling → Traction → Slitting → Inspection → Winding

Features: Uniform thickness, high tensile strength, stable product quality; suitable for high-standard engineering projects

Core Equipment Composition

1. Raw Material Processing System

Automatic batching/mixing machine: Accurately mix HDPE resin, carbon black (2-5%), antioxidant and stabilizer

Dehumidifying dryer: Ensure raw material moisture content < 0.02% to avoid bubbles

Vacuum feeder: Closed conveying to prevent pollution

2. Extrusion System (Core)

Single/double screw extruder: Single screw (130/33, 150/33) with output 400-600kg/h for conventional production; double screw with stronger mixing for high-filling and high-requirement formulas

Die head: Annular (blow molding) / flat (casting) to ensure uniform melt discharge

Temperature control system: Multi-stage PID + infrared heating, temperature control accuracy ±1℃

3. Molding & Cooling System

Blow molding: Bubble cooling air ring, herringbone plate, traction roller, slitting knife

Casting: Three-roll calendering unit (mirror/matte), cooling circulation system

4. Online Quality Control

Laser thickness gauge: Full-width real-time monitoring, thickness tolerance ±0.08mm

Spark pinhole detection: 30kV high voltage to detect micropores

Hydrostatic pressure/tensile/carbon black dispersion: Online/offline sampling inspection

5. Post-processing & Winding

Corona/surface treatment: Improve welding and composite adhesion

Automatic edge cutting, tension control, meter counting, automatic roll changing

Technical Specifications

Core Advantages & Selling Points

1. High Automation & Stability

PLC control system realizes full-line linkage, stable operation, reduces manual intervention, and improves production efficiency

2. Excellent Product Quality

Precise temperature control and online detection ensure uniform thickness, stable performance, and meet national standard GB/T 17643-2025 requirements

3. Flexible Process Selection

Provide blow molding and flat extrusion casting two processes, customers can choose according to product thickness, width and application scenarios

4. Customization Capability

Customize equipment width, thickness range and output according to customer needs, meet different production requirements

5. Wide Application Range

Produced geomembrane is suitable for landfill, sewage treatment tank, reservoir, subway tunnel, roof waterproofing, fish pond, mining and other fields

Comparison with Competitors

1. Process Technology Advantage

Adopt advanced extrusion and molding technology, product thickness tolerance control is better than industry average, blow molding product thickness uniformity is higher than similar equipment

2. Quality Control Advantage

Equipped with complete online detection system, including laser thickness gauge and spark pinhole detector, ensure product quality meets engineering standards

3. After-sales Service Advantage

Provide professional installation, commissioning, training and after-sales maintenance services, solve customer problems in a timely manner

Brand & Customer Trust

Haiming Machinery was founded in 2007, located in Taitou Industrial Park, Shouguang, Shandong. The company has rich experience in waterproofing membrane equipment manufacturing, products are sold to domestic and foreign markets

Our production lines have been used by many well-known waterproofing material manufacturers, and have been recognized for stable performance and reliable quality

We have passed ISO9001 international quality management system certification, and strictly implement quality control in the whole production process

Company Profile

Founded in 2007, Haiming Machinery is located in Taitou Industrial Park, Shouguang, Shandong. Our leading products include various new waterproofing membrane equipment, asphalt waterproofing membrane production lines, non-woven fabric equipment, high- and medium-grade polyethylene polypropylene (polyester) polymer waterproofing membrane equipment, polyvinyl chloride PVC waterproofing membrane equipment, TPO waterproofing membrane equipment, SBS self-adhesive waterproofing membrane equipment production line, non-asphalt-based membrane equipment, geogrid production equipment, geomembrane production equipment, etc.

Our products feature long service life, energy saving, low cost, easy operation, and are suitable for large, medium and small enterprises. According to the air pollution problem of SBS waterproofing membrane, we have developed a complete set of dust removal and odor removal equipment with an effect of more than 90%.

FAQ

Q: How to choose between blow molding and flat extrusion casting production line?

A: High-standard engineering projects prefer blow molding line for better thickness uniformity and product strength; high-speed, composite and low-cost production prefer flat extrusion casting line for higher production efficiency

Q: What is the warranty period of the production line?

A: We provide 12-month warranty for the whole machine, and lifelong technical support and maintenance services

Q: Can the production line be customized?

A: Yes, we can customize equipment width, thickness range, output and configuration according to customer specific requirements