Premium 4.2 mil tan polycoated kraft secondary release liner with dual-sided silicone coating for screen printable adhesives, offering moisture stability and wrinkling resistance in industrial applications.
The 3M™ Secondary Liner 7526L is a premium tan-colored, 4.2 mil polycoated kraft (PCK) release liner specifically engineered for use with 3M screen printable adhesives. This industrial-grade secondary release liner features a dual-sided silicone release coating designed to provide exceptional moisture stability while resisting wrinkling and curling during downstream processing and stacking operations. The gloss side (interior of roll) delivers medium release silicone properties, while the matte side (exterior of roll) provides low release silicone characteristics, offering versatile application flexibility for demanding industrial environments.
This 58# polycoated kraft liner is specifically designed for hard tool die-cutting, screen-printing applications, and wide web lamination processes. The 4.2 mil thickness provides optimal balance between durability and flexibility, making it ideal for kiss-cutting and precision die-cutting operations. The product is engineered to protect 3M screen printable adhesives during critical downstream processing phases, ensuring product integrity and performance consistency throughout the manufacturing workflow.
The 3M Secondary Liner 7526L represents one of over 150,000 innovative adhesive, topcoat, facestick and liner combinations developed by 3M to meet complex industry demands. Recommended lamination pressure of 1.5-2.0 psi with hard-edged plastic tools ensures optimal adhesive contact with the liner. Ideal application temperature range is 60°F to 100°F (15°C to 38°C), making it suitable for diverse manufacturing environments across aerospace, electronics, medical, packaging, and industrial applications.
Key Features
- Dual-sided silicone release coating with gloss (medium release) and matte (low release) surfaces
- 4.2 mil polycoated kraft construction provides moisture stability and dimensional consistency
- Specifically designed for 3M screen printable adhesives and downstream processing
- Resists wrinkling and curling during lamination, die-cutting, and stacking operations
- Suitable for hard tool die-cutting, screen-printing, and wide web lamination applications
- Optimal for kiss-cutting operations with recommended lamination pressure of 1.5-2.0 psi
- Ideal application temperature range 60°F to 100°F (15°C to 38°C)
- Protects adhesive integrity during downstream processing and product stacking
Technical Specifications
| Specification |
Value |
| Product Number | 7526L |
| 3M ID | 7100072921 |
| Primary Liner Material | 58# Polycoated Kraft Paper (PCK) |
| Color | Tan |
| Thickness (Imperial) | 4.2 mil |
| Thickness (Metric) | 0.11 mm |
| Release Coating | Silicone on both sides - Gloss side (medium release), Matte side (low release) |
| Smallest Saleable Unit | Roll |
| Recommended Lamination Pressure | 1.5-2.0 psi |
| Ideal Application Temperature Range | 60°F to 100°F (15°C to 38°C) |
| Primary Use | Screen printable adhesives |
| Application Type | Hard tool die-cutting, Screen-printing liner, Wide web lamination |
| Industries | Aerospace, Electronics, General Industrial, Medical, Military & Government, Packaging, Paper, Point of Purchase, Print |
| Product Type | Secondary Release Liner |
| Use Classification | Industrial/Occupational use only - Not for consumer sale or use |
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