Step-by-Step Guide to Use Peel Strength Tester

Pacorr Peel Strength Tester: Complete Operating Guide for Accurate Adhesive Testing

Pacorr Peel Strength Tester is an advanced testing equipment engineered for precise measurement of the bond strength between two joined materials. It is widely used in packaging, labeling, adhesive tape, film, medical, and automotive sectors where reliable adhesion is crucial. By evaluating how much force is required to peel one material from another, this machine ensures the durability and safety of products during shipping, handling, and usage.

This blog will provide a step-by-step guide to using Pacorr's Peel Strength Tester, ensuring each process is followed with clarity and efficiency for accurate results.

Understanding the Peel Strength Tester

A Peel Strength Tester is a laboratory testing device designed to measure the force necessary to separate bonded surfaces. It plays a vital role in quality control and R&D processes, especially in flexible packaging, films, adhesives, and protective coatings.

The test is typically expressed in force per unit width (e.g., N/mm), revealing the adhesive's ability to maintain its bond under stress. Pacorr’s peel strength testers are built to provide high precision with customizable settings, user-friendly controls, and compliance with international testing standards.

Importance of Peel Strength Testing

1. Ensures product reliability in packaging and labeling
2. Evaluates adhesive performance under stress
3. Identifies weak bonding or delamination issues
4. Supports compliance with ASTM and ISO test standards
5. Prevents product failures during transit or handling

Different Types of Peel Tests Supported by Pacorr

1. 180-Degree Peel Test – One of the most common tests where the bonded material is peeled back directly over itself.
2. 90-Degree Peel Test – The material is peeled away perpendicularly from the surface.
3. T-Peel Test – Used for two flexible materials joined together, pulled in opposite directions.
4. Floating Roller Peel Test – Ideal for flexible substrates where uniform peel stress is needed.

Each of these test methods is valuable depending on material type and the real-world conditions the product will face.

Step-by-Step Guide to Use Peel Strength Tester

Let’s break down the usage into step-by-step instructions for operating Pacorr’s Peel Strength Tester efficiently and correctly.

1. Initial Preparation

1. Turn on the Machine – Power up the tester and allow the system to initialize fully.
2. Calibrate the Load Cell – Use certified calibration weights to calibrate the load cell for accurate readings.
3. Select the Right Peel Fixture – Install the correct fixture based on the test type (180°, 90°, or T-peel).
4. Clean the Grips and Jaws – Ensure no dust, adhesive residue, or oil is on the clamps to prevent slippage.
5. Review Test Standards – Align your test process with required standards like ASTM D903, ASTM D3330, ISO 8510, etc.

2. Sample Preparation

1. Cut the Specimen – Use a die or precision cutter to ensure accurate width (usually 25 mm or 1 inch).
2. Bond the Materials – Prepare the adhesive bond and ensure full curing if required.
3. Condition the Sample – Maintain sample in standardized temperature and humidity conditions before testing.
4. Mark the Starting Point – Ensure a clear unbonded tab is present for grip placement.

3. Mount the Sample

1. Place the Bonded End in Lower Clamp – Securely hold the bonded side of the specimen in the lower grip.
2. Place the Free End in Upper Clamp – Hold the unbonded or peeling side in the upper grip.
3. Ensure Alignment – The sample should hang straight to prevent angular stress.
4. Set the Load to Zero – Reset the load cell reading to ensure zero initial force before the test begins.

4. Configure Machine Parameters

1. Select Test Type – Choose between 90°, 180°, or T-Peel mode on the control interface.
2. Input Crosshead Speed – Standard speed is generally 300 mm/min, but it can vary by material.
3. Define Peel Length or Duration – Specify the distance or time the machine will peel the material.
4. Set Units and Graph Output – Choose the desired unit (N/mm, gf/mm) and enable graph plotting.

5. Perform the Peel Test

1. Start the Test – Press the “Start” button to begin the test. The machine will pull the sample as per your settings.
2. Observe Peel Process – Monitor the force readings and the uniformity of the peeling action.
3. Wait for Auto Stop – Once the defined peel length is completed, the machine will stop automatically.
4. Review Digital Display – Average, peak, and real-time values are shown for instant evaluation.

6. Data Recording and Analysis

1. Save Test Results – Store the data on the machine’s memory or export it to a USB or PC.
2. Analyze Force Graph – Study the force vs. displacement graph to identify peeling behavior or failure zones.
3. Calculate Average Peel Strength – Use the software to get mean peel force across the peel length.
4. Generate Report – Compile a formal report for compliance or internal records.

Best Practices for Accurate Peel Testing

1. Use Consistent Sample Sizes – Always prepare samples with identical dimensions.
2. Repeat Tests for Accuracy – Test at least five specimens and average the results.
3. Maintain the Equipment – Clean clamps and calibrate load cells regularly.
4. Record Ambient Conditions – Note temperature and humidity for traceability.
5. Avoid Human Error – Let the machine perform the test without any manual interference.

Applications of Peel Strength Tester

1. Packaging Industry – To ensure seal strength of flexible pouches, lidding films, and blister packs.
2. Adhesive Tape Manufacturing – Testing strength of single and double-sided tapes.
3. Label Industry – Verifying peel performance of printed labels and barcodes.
4. Electronics and Films – Testing protective film adhesion on electronic devices.
5. Medical Packaging – Ensuring sterile packaging materials meet peel requirements.

Benefits of Using Pacorr Peel Strength Tester

1. High Testing Accuracy – Delivers reliable data under consistent conditions.
2. Easy to Operate – Intuitive controls make it suitable for any skill level.
3. Multiple Peel Modes – Adapts to various product testing needs.
4. Complies with International Standards – Supports ASTM and ISO methods.
5. Durable Design – Built for continuous industrial use with minimal maintenance.

Conclusion

Pacorr Peel Strength Tester is an essential tool for industries that rely on adhesives and sealed bonds for product performance. This step-by-step guide empowers operators to perform tests confidently, ensuring that the test results are both accurate and compliant with global standards. By using Pacorr's technology, companies can identify weak bonding early, reduce failures, and boost their brand's reliability in the market.

Accurate peel testing is not just a compliance measure—it is a proactive step toward product excellence and customer trust.