Adhesive Tape Holding Power Test: Room vs. High Temperature
Holding power shows how well a pressure-sensitive adhesive tape resists movement under a sustained shear load.
It is different from initial tack and peel adhesion because it focuses on how the bond performs over time while a constant load is applied parallel to the bonded surface.
For mounting, fixing, industrial assembly and other applications involving continuous load, holding power is an important part of tape performance evaluation.
YG Group tests tape holding power under both room-temperature and elevated-temperature conditions to compare adhesive constructions and support product selection.
Quick Answer: What Does a Holding Power Test Measure?
A holding-power test bonds a tape specimen to a test panel, applies a constant load and records either:
Time to Failure — how long the specimen remains bonded.
Displacement — how far the specimen moves during a defined test period.
This is also commonly called a static shear adhesion test.
A longer time to failure or smaller displacement may indicate stronger static shear resistance — but only when the test conditions are equivalent.
Room Temperature vs. High Temperature Holding Power
Both tests measure static shear performance, but under different temperature conditions.
| Test | What It Evaluates |
|---|---|
| Room-Temperature Holding Power | Static shear behavior under controlled ambient conditions |
| High-Temperature Holding Power | Static shear behavior at an elevated test temperature |
For the YG Group demonstration:
Room-Temperature Preparation
23°C ± 1°C / 50% RH ± 5%
High-Temperature Test
80°C
Applied Load
1 kg
At elevated temperatures, some pressure-sensitive adhesives may show more creep or movement under load.
Important: Passing an 80°C holding-power test does not mean the tape automatically has an 80°C service-temperature rating.
Actual performance also depends on the substrate, load, exposure time and application conditions.
Watch the Holding Power Test
The video shows the complete test process:
Conditioning → Panel Cleaning → Specimen Preparation → Rolling → Dwell → Loading → Result Recording
Both room-temperature and elevated-temperature tests are included.
Test Conditions Used in This Demonstration
| Parameter | Condition |
|---|---|
| Specimen Conditioning | ≥24 h |
| Preparation Environment | 23°C ± 1°C / 50% RH ± 5% |
| Specimen Size | 25 mm × 150 mm |
| Bonded Area | 25 mm × 25 mm |
| Load | 1 kg |
| Dwell Time | 20 min |
| High-Temperature Test | 80°C |
| Result | Time to failure or displacement |
These conditions apply to the specific test shown in the YG Group video.
Different products or customer test methods may use different parameters.
