3M 681 tape is an alternative to the discontinued 3m 610, offering upgrades in appearance and model while preserving the original performance. It features a 2.4 mil (0.061 mm) thick transparent UPVC film backing with a rubber adhesive. This tape is moisture and chemical resistant, provides high initial bond strength, and adheres well to various materials, including hard-to-bond plastics, while removing cleanly. It is commonly used in ink adhesion testing for printed circuit boards, plastic surfaces screen printing. Additionally, 3m 681 is ideal for packaging applications such as temporary holding, light-duty carton sealing, bag sealing, and attachment.
1. Upgraded version of 3M 610
2. Moisture and chemical resistant
3. Long aging stability
4. Easy to open when used as a closure feature
5. Resists becoming brittle with age
6. Clean removal with no residue
7. High strength and adherence to hard-to-bond surfaces
8. Excellent handling and durability and highly hand-tearable
9. Perfect for ink adhesion test
| Product Model | 3M 681 (Upgraded Version) | 3M 610（Discontinued） |
| Color | Transparent | |
| Adhesive Type | Pressure Sensitive Rubber Resin | |
| Backing | UPVC Film | Cellophane Film |
| Backing Thickness | 0.038 mm(1.5 mil) | 0.036 mm(1.43 mil) |
| Total Tape Thickness | 0.061 mm (2.4 mil) | 0.058 mm (2.3 mil) |
| 180°Peel Adhesion | 4.4 N/cm (40 0z/in) | 3.6 N/cm (33 0z/in) |
| Elongation at Break | 35% | 15% |
| Longitudinal Tensile Strength | 43.8 N/cm (25 lb/in) | 40 N/cm (23 lb/in) |
| Core Size (ID) | 76.2 mm(3 in) | 76.2 mm (3 in) |
| Standard Roll Length | 66 m (72 yd) | 66 m (72 yd) |
| Standard Width | 9.5,12.7, 19, 25.4, 38.1, 50.8, 76.2, 101.6 mm(3/8,1/2,3/4, 1,1.5, 2, 3,4 in) | 6.35, 9.5, 19, 25.4, 38.1, 50.8 mm (1/4, 3/8, 3/4, 1, 1.5,2in) |
* Ink adhesion test
* Printing PCB Board test
* Silk-screen adhesion test
* Car painting adhesion test
* Heat-shrink packaging applications
* High temperature tabbing
* Temporary holding in packaging
* Light-duty carton sealing
* Bag sealing
* Attachment applications
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