A clear, thin test tape used to check ink adhesion on screen-printed, colour-printed, inkjet-printed and PCB surfaces, and for general fixing and sealing.
Specifications
| Item | Specification |
|---|---|
| Manufacturer / name | 3M / 681 test tape |
| Colour | Clear |
| Thickness | 0.061 mm |
| Width | 19 mm |
| Length | 66 m |
| Heat resistance | 150 °C |
Properties
- Clear: does not hide the print or text underneath.
- Removes cleanly: designed to peel off without leaving adhesive, even after long contact.
- Heat resistant to 150 °C: can be used in baking and hot-press steps.
- Stable adhesion: holds on many surface materials without slipping.
- General purpose: used for testing as well as everyday fixing.
Where it is used
| Use | How |
|---|---|
| Screen-printing tests | Ink adhesion test, to check print quality is stable |
| Colour-print and inkjet lines | Quick check of print fastness and inkjet stability |
| Printed circuit board processing | Ink adhesion test on PCBs, common in electronics manufacturing |
| Fixing | Holds items waiting for processing or on display |
| Packaging and office | Quick sealing that comes off without damaging the packaging |
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