Heavy-Duty Anti-Scratch PE Protective Film for Stainless Steel

How to Balance Elongation and Scratch Resistance in Deep-Drawing Stainless Steel?

Achieving the right balance between elongation and scratch resistance in deep-drawing stainless steel applications requires careful control of three core factors: film thickness, resin formulation, and adhesive system.

Key Technical Parameters

• Thickness: Standard PE Film: 40–60 μm | Heavy-Duty Anti-Scratch PE Film: 80–120 μm
• Elongation at Break (MD): Standard PE Film: 150–200% | Heavy-Duty Anti-Scratch PE Film: 250–300%
• Tensile Strength (MD): Standard PE Film: 15–20 MPa | Heavy-Duty Anti-Scratch PE Film: 25–30 MPa
• Adhesion (to BA steel): Standard PE Film: 100–150 cN/20mm | Heavy-Duty Anti-Scratch PE Film: 200–300 cN/20mm
• Weathering Resistance: Standard PE Film: 250 hrs | Heavy-Duty Anti-Scratch PE Film: 500–600 hrs
• Application Limit: Standard PE Film: Light forming | Heavy-Duty Anti-Scratch PE Film: Deep drawing & heavy forming

How We Achieve This Balance

At Zhejiang Feifan New Material Technology Co., Ltd., we have been perfecting this balance for over 20 years. Here's our approach:

1. Resin Engineering

We use a proprietary blend of LDPE (low-density polyethylene) and LLDPE (linear low-density polyethylene) to achieve high elongation without sacrificing tensile strength. Our in-house R&D center continuously optimizes the formulation to ensure the film stretches with the metal during deep drawing while maintaining sufficient density to resist scratches.

2. Precision Coating Control

Our centralized feeding system and advanced equipment enable consistent adhesive application. We use an acrylic-based adhesive system that offers:

• Excellent oil resistance (critical in machining environments)
• Clean peel-off without residue
• Stable adhesion across temperature variations

3. Thickness Optimization

With an annual production capacity of 8,000 tons of PE film and 50 million square meters of PE protective film, we can precisely tailor thickness to each application. For deep-drawing stainless steel, we recommend 100–120 μm films — thick enough to absorb impact and prevent scratches, yet flexible enough to follow complex contours.

Practical Recommendations

• Light bending / shearing: 50–70 μm thickness, Low adhesion (80–120 cN/20mm) — cost-effective solution for simple operations
• Deep drawing / heavy forming: 100–120 μm thickness, Medium adhesion (200–250 cN/20mm) — maximum protection during severe deformation
• Outdoor storage / transport: 100 μm thickness with UV inhibitors, Medium adhesion — prioritize weatherability (500+ hrs) to prevent film degradation

For over 20 years, Zhejiang Feifan New Material Technology Co., Ltd. has delivered high-performance protective films to industry leaders including Robam, Fotile, BYD, and Haier. As a National High-Tech Enterprise and a Provincial "Specialized and Innovative" SME, we hold 2 invention patents and 15 utility model patents, backed by a municipal R&D center. Our full in-house process control — from blowing and coating to slitting and packaging — ensures consistent quality batch after batch.

Explore our Heavy-Duty Anti-Scratch PE Protective Film for Stainless Steel to learn more about how we support your deep-drawing applications with reliability and precision.

Frequently Asked Questions

FAQ 1: What makes Zhejiang Feifan New Material Technology Co., Ltd. different from other PE film manufacturers?

Zhejiang Feifan New Material Technology Co., Ltd. has specialized in PE protective films for over 20 years. Unlike many competitors, we control the entire manufacturing process in-house — from resin blending and film blowing to coating, slitting, and packaging. This vertical integration, combined with our annual capacity of 8,000 tons of PE film and 50 million square meters of PE protective film, allows us to maintain strict quality standards. Our products serve diverse industries including appliances, stainless steel, aviation, and food packaging, with trusted customers like Robam, Fotile, BYD, and Haier. Our status as a National High-Tech Enterprise and Provincial "Specialized and Innovative" SME reflects our commitment to technical excellence.

FAQ 2: Can your heavy-duty anti-scratch PE film be used for both deep drawing and outdoor storage?

Yes, but with specific grade selection. Zhejiang Feifan New Material Technology Co., Ltd. offers tailored solutions: for deep drawing applications, we recommend 100–120 μm films with medium adhesion (200–250 cN/20mm) and high elongation (250–300%) to follow complex contours without tearing. For outdoor storage, we add UV inhibitors to extend weathering resistance to 500–600 hours. If your application requires both deep drawing and extended outdoor exposure, our R&D team can customize the formulation. Please consult our technical specialists to select the optimal grade from our product portfolio, including the Heavy-Duty Anti-Scratch PE Protective Film for Stainless Steel.

FAQ 3: How do I choose the right adhesion level for my stainless steel surface?

Choosing the right adhesion depends on your surface finish and processing conditions. For BA (bright annealed) stainless steel, Zhejiang Feifan New Material Technology Co., Ltd. recommends medium adhesion (200–250 cN/20mm) for heavy forming to ensure the film stays in place during deformation. For 2B or brushed finishes, lower adhesion (150–200 cN/20mm) may suffice. If machining oils are present, our acrylic adhesive system offers excellent oil resistance to prevent film lifting. Always test on your actual production line, as adhesion can vary with temperature, humidity, and processing speed. Our technical team at Zhejiang Feifan New Material Technology Co., Ltd. provides free samples and consultation to help you find the perfect match for your stainless steel protective film needs.