How to read a tape datasheet
A tape datasheet is not a specification until you add the four conditions that decide the result: substrate, temperature, environment and format. This guide states what each number actually measures.
Peel values are measured on a defined panel, at a defined speed and angle, after a defined dwell time. Change the surface energy, the contact pressure or the dwell, and the number moves. Low-surface-energy plastics such as PP, PE and powder-coated panels usually need a primer.
Continuous service temperature is the range the bond can hold for the service life. Peak temperature is a short excursion that may be tolerated without permanent loss. Reporting one number for both is the most common source of field failure.
UV, humidity, salt spray, solvents and plasticisers attack different parts of the construction. A tape that passes 1000 h QUV may still fail after three weeks of plasticiser contact. Ask for the ageing condition that matches your exposure, not a generic one.
Dielectric strength is measured through the thickness; surface resistivity is measured across the surface; volume resistivity is measured through the bulk. Thermal conductivity of a tape is dominated by the filler loading and the bond line thickness, so it must be quoted together with contact pressure.
Substrate pair and surface condition, continuous and peak temperature with duration, environment, required format, annual volume. With these five, a short list is possible in one exchange.
