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Specifications
The detailed technical specification matrix below outlines the standard physical properties and testing protocols for our painted metal protective film line. Custom engineering options are available to match specific paint systems.
| Technical Parameter | Standard Value Range | Testing Standard / Method |
|---|---|---|
| Base Resin Chemistry | Co-extruded Low-Density Polyethylene (LDPE/LLDPE) | ASTM D882 Physical Test |
| Total Film Thickness | 35 Micron to 120 Micron (1.4 mil - 4.8 mil) | ISO 4593 Thickness Test |
| Adhesive Technology | Paint-Compatible Water / Solvent Acrylic System | In-house Gloss-Safe Chemistry |
| Adhesion Strength (to painted steel) | 20 g/25mm to 300 g/25mm (Low to High Tack) | PSTC-101 / ASTM D3330 |
| Tensile Strength (MD/TD) | ≥ 18 MPa (Machine) / ≥ 15 MPa (Transverse) | ASTM D882 Mechanical Test |
| Elongation at Break | ≥ 300% (MD) / ≥ 480% (TD) Flexible Backing | ASTM D882 Elongation Standard |
| Standard Roll Widths | 500 mm to 2050 mm (Wide Coil Coverage) | Precision Factory Slitting |
| Standard Roll Lengths | 500 m to 2000 m Master Winding Rolls | Standard Industrial Winding Metric |
| Color Varieties | Black & White, Clear, Blue, Milky White, Printed | Visual Color Verification |
| UV Weather Resistance | 3 Months to 12 Months Outdoor Stabilization | ASTM G154 Accelerated Weathering |
Quality control verification includes gloss retention testing after film removal, paint adhesion cross-hatch testing, high-temperature residue evaluation up to 80°C, and roll unwind tension analysis.
Applications
Wuxi Wanfeng PE film for painted metal is designed for broad application across coil coating lines, roll forming operations, architectural sheet fabrication, and home appliance assembly.
- Pre-Painted Steel & Aluminum Coils: Applied on continuous high-speed coil coating lines to safeguard PVDF, polyester, and SMP painted metal coils during slitting, recoiling, and transit.
- Roll Forming & Roofing Panels: Protects painted metal roofing sheets, standing seam panels, and insulated sandwich panels during high-speed cold roll forming without film tearing or lifting.
- Home Appliance Cabinets: Safeguards painted metal outer panels for refrigerators, washing machines, microwaves, and air conditioning housings against scratches during stamping and assembly.
- Architectural Facade Panels: Shields exterior painted aluminum composite panels (ACP), honeycomb panels, and metal wall cladding from construction site dirt, mortar, and UV weathering.
- Powder-Coated Metal Enclosures: Provides temporary surface preservation for powder-coated electrical cabinets, server racks, lighting fixtures, and metal furniture during handling and shipping.
Engineered for consistent performance under variable lamination speeds, our protective films maintain excellent edge adhesion even during complex metal bending.
Advantages
Choosing Wuxi Wanfeng Protective Film Co., Ltd. for painted metal protection guarantees superior product quality, reduced scrap rates, and complete surface finish preservation.
- Gloss Preservation & Zero Residue: Specially engineered acrylic adhesives eliminate ghosting marks, haze, or gloss alteration on high-gloss and matte paint coatings upon film removal.
- Excellent Stretchability for Bending: High elongation properties allow the protective film to conform during sharp press bending, deep drawing, and roll forming without cracking or edge lifting.
- High UV Weather Stabilization: Formulated with advanced UV inhibitors that prevent film embrittlement, degradation, and sun-baked adhesive transfer during up to 12 months of outdoor exposure.
- Tailored Tack for Paint Textures: Custom tack levels engineered for smooth high-gloss PVDF paints as well as coarse textured powder coatings, ensuring optimal bond stability.
- Direct OEM Factory Capabilities: Direct wholesale factory supply from Wuxi, custom master roll widths up to 2050mm, flexographic print branding, and ISO9001 certified quality management.
