Premium 3M Photo Film Splicing Tape engineered for photographic film processing with aggressive rubber adhesive, excellent chemical resistance, and superior durability across extreme temperatures.
3M Photo Film Splicing Tape 8421 is a premium splicing solution specifically engineered for photographic film and web processing applications. This creamy white splicing tape features a durable polyester backing with an aggressive rubber adhesive that grabs quickly and adheres excellently to a variety of film types. The tape is designed to withstand the demanding chemical processes involved in photographic development, offering exceptional solvent and chemical resistance that protects your film during processing.
The tape measures 12 inches wide by 72 yards long with a 2.5 mil thickness, providing ample coverage for multiple splicing projects. Each case contains 4 rolls on plastic cores, making it convenient for industrial operations. The white backing ensures easy identification of splices in your workflow, while the polyester construction provides additional abrasion protection. The aggressive rubber adhesive delivers high tack strength with excellent shear resistance, making it ideal for butt splicing, core starting, and general wide web splicing applications.
This professional-grade tape maintains flexibility at temperatures as low as -60°F (-50°C) and remains dimensionally stable up to 300°F (150°C), ensuring reliable performance across various environmental conditions. Beyond film splicing, it serves excellently for sealing, color-coding, protecting, and edging applications where high-tack rubber adhesive is required. Recommended for use in appliance, electronics, metalworking, paper, and print industries.
Key Features
- Aggressive rubber adhesive grabs quickly and adheres well to variety of films
- Excellent solvent and chemical resistance for photographic processing environments
- Durable polyester backing provides abrasion protection and easy splice identification
- Remains flexible at -60°F (-50°C) and dimensionally stable up to 300°F (150°C)
- High shear strength and superior tack for reliable long-term performance
Technical Specifications
| Specification |
Value |
| Product Number | 8421 |
| Width | 12 inches (304.8 mm) |
| Length | 72 yards (65.83 meters) |
| Thickness | 2.5 mil (0.06 mm) without liner |
| Backing Material | Polyester |
| Adhesive Type | Rubber |
| Backing Thickness | 1.4 mil (0.04 mm) |
| Adhesive Thickness | 0.04 mm |
| Product Color | Blue |
| Product Form | Roll |
| Elongation at Break | 140% |
| Tensile Strength | 75.3 N/100mm |
| Minimum Operating Temperature | -60°F (-50°C) |
| Maximum Operating Temperature | 300°F (149°C) |
| Quantity per Case | 4 rolls |
| Core Type | Plastic core |
| UPC Code | 05054180019913 |
| 3M ID | 7100104159 |
| Applications | Film splicing, web processing, sealing, color-coding, edging, defect marking |
| Industries | Appliance, Electronics, Metalworking, Paper, Print |
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