The 3M™ Photo Film Splicing Tape 8421 is meticulously engineered to meet the high standards of the photographic film processing industry, offering unmatched precision and durability. Its creamy white, thin yet robust polyester backing makes it an ideal choice for splicing applications where reliability and efficiency are paramount. This tape stands out not only for its physical properties but also for its superior adhesive qualities, ensuring a secure bond through various stages of film processing.
- Aggressive Rubber Adhesive: The high tack, rubber-based adhesive is specially formulated to provide excellent adhesion to a wide array of films, ensuring splices remain secure even in the face of chemical and solvent exposure. This chemical resistance is critical in environments where photographic films undergo rigorous processing.
- Durable and Versatile Backing: The creamy white polyester backing is not only easily identifiable in splicing operations but also offers significant abrasion protection. This makes it suitable for additional tasks such as sealing, edging, and color-coding, where durability and visibility are essential.
- Flexibility and Stability: Remarkably, the tape maintains its flexibility at extreme temperatures as low as -60°F (-50°C) and up to 300°F (150°C). This ensures that it remains effective and stable across a wide range of environmental conditions, from the cold storage of undeveloped film to the high temperatures of processing equipment.
- High Shear Strength: The combination of a robust backing and an aggressive adhesive grants this tape exceptional shear strength, preventing slippage and ensuring the integrity of splices under tension.
Recommended Applications: 3M™ Photo Film Splicing Tape 8421 is highly recommended for the splicing of most photographic films through the chemical developing process, general wide web splicing including butt splicing and core starting, and applications requiring sealing, color-coding, protecting, and edging with a high tack adhesive. It is also ideal for defect marking, offering a comprehensive solution for maintaining the continuity and quality of photographic materials.
Usage and Maintenance: For best results, ensure that surfaces are clean and dry before tape application. The tape's high-performance adhesive and durable backing are designed for long-term application with minimal maintenance, providing a reliable splicing solution that professionals in the photographic processing industry can depend on.
Product ID: 3M 8421 UPC: 00-021200-05750-2, 00021200057502 Stock ID: 70-0092-7201-7, 70009272017
Adhesion to Steel oz/in (N/100 mm) : 50 (54)
Adhesive Type : Rubber
Backing Material : Polyester
Backing Thickness : 1.4 Milli-inch (mil)
Backing Thickness (metric) : 0.04 Millimetre
Brand : 3M
Color : White
Elongation : 140 Percent
Length : 72 Linear Yard
Length (metric) : 65.83 Linear Metre
Maximum Operating Temperature (Celsius) : 148 Degree Celsius
Maximum Operating Temperature (Fahrenheit) : 300 Degree Fahrenheit
Minimum Operating Temperature (Fahrenheit) : -60 Degree Fahrenheit
Product Form : Roll
Push To GSDB : True
Shelf Life : 18 Month
Tensile Strength lb/in (N/100 mm) : 43 (754)
Total Thickness : 2.5 Milli-inch (mil)
Units per Case : 36
Width : 1 Inch
Width (metric) : 25.40 Millimetre
Units per Pallet : 2880 Rolls
Harmonizing Code : 3919102055
ECCN : EAR99