english What are the raw materials for the production of color steel plate protective film
2025-07-16
Raw Materials for Color Steel Plate Protective Film
The production of color steel plate protective film is based on high molecular polymers, supplemented by various functional additives. The materials can be divided into three main categories:
1. Base Resin (Main Material)
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Polyethylene (PE) - Most widely used, including:
- Low-density polyethylene (LDPE)
- Linear low-density polyethylene (LLDPE)
- Polypropylene (PP) - High stiffness, suitable for scenes requiring high flatness
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High-end options:
- Polyvinyl chloride (PVC) - Improved weather resistance
- Polyolefin copolymer (PO) - Better adhesion
2. Additives (Performance Optimization)
- Plasticizers - Enhance flexibility
- Antioxidants - Delay aging
- UV absorbers - Reduce sunlight damage
- Lubricants - Prevent film adhesion
- Anti-adhesion agents - Prevent sticking during winding
3. Adhesives (Bonding Properties)
- Acrylic pressure-sensitive adhesives - Most common, environmentally friendly with stable adhesion
- Rubber pressure-sensitive adhesives - For special low-temperature applications (improved adhesion)
- Silicone pressure-sensitive adhesives - For low adhesion requirements (easy peeling)
Additional components include masterbatches or sunscreens for color/light adjustment. For food/medical applications, food-grade certified raw materials are used. The ratio and processing technology directly affect the protective performance and applicable scenarios.
