| Peel Test Angle |
90° peel
180° peel
The instrument should support a stable, accurately controlled peel angle.
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Peel angle changes the measured force and must match the selected procedure. A tester that supports both angles is more versatile.
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ASTM D3330, PSTC-101, FINAT FTM 1, ISO 8510-2
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Pressure-sensitive tapes, labels, films, protective coatings, and flexible packaging materials
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| Force Measurement |
Interchangeable load cells selected according to the expected force range, with digital force recording and peak-force detection.
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The load cell should be suitable for the specimen so that the measured force remains within an accurate and useful part of its capacity.
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Applicable to most instrumented peel-test procedures
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Low-force labels and tapes, medium-strength laminates, and higher-strength bonded materials
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| Crosshead Speed |
Programmable constant speed, commonly covering approximately 1 to 500 mm/min, depending on the instrument configuration.
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Peel force is affected by test speed. A controlled speed improves repeatability and allows the operator to follow the required standard.
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ASTM D3330 and other procedures specifying a defined separation rate
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Adhesive tapes, labels, laminates, medical dressings, and seal-strength-related development work
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| Specimen Width |
Fixtures suitable for commonly used specimens such as 12 mm, 19 mm, 25 mm, and 50 mm wide strips, subject to the selected method.
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Specimen width influences the reported force. A suitable fixture helps maintain alignment and prevents edge damage.
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ASTM D3330, PSTC-101, FINAT methods
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Single-coated tape, double-coated tape, label stock, and flexible packaging laminates
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| Grip and Fixture Design |
Adjustable clamps with parallel gripping surfaces, smooth sample loading, and sufficient clearance for the backing and substrate.
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Slippage, bending, or misalignment can create artificially high or low readings and increase test variation.
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Method-dependent; fixture geometry should follow the selected standard
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Tapes, films, paper labels, foil laminates, fabrics, and coated substrates
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| Travel and Working Stroke |
A powered travel system with enough stroke for the required peel length, commonly at least 100 mm for routine laboratory testing.
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Adequate travel allows a consistent peel distance while keeping the specimen and fixture safely within the test area.
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Procedure-specific; verify the required peel length before purchase
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Quality control, product comparison, research, and formulation development
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| Data Acquisition |
Real-time force-versus-distance curve, average peel force, peak force, minimum force, test speed, and exportable results.
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The force curve can reveal unstable adhesion, cohesive failure, substrate deformation, and sudden release events that a single value may hide.
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Useful for standard testing and internal quality-control procedures
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Adhesive development, process validation, incoming inspection, and failure analysis
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| Calibration and Verification |
Traceable force calibration, zero-force adjustment, verification using certified weights or reference devices, and documented calibration records.
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Regular verification helps maintain measurement reliability and supports laboratory quality systems.
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Laboratory procedures based on applicable ASTM, ISO, FINAT, or PSTC requirements
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Accredited laboratories, production quality control, supplier qualification, and audit preparation
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| Environmental Control |
Compatibility with conditioning at controlled temperature and relative humidity, with specimen conditioning performed before testing when required.
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Adhesive performance can change significantly with temperature, humidity, dwell time, and backing material.
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ASTM D3330 and related procedures that specify conditioning requirements
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Pressure-sensitive adhesives, medical products, packaging materials, and climate-sensitive films
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| Failure Observation |
Clear viewing area and the ability to record failure mode, such as adhesive failure, cohesive failure, backing failure, or substrate separation.
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The numerical peel result should be interpreted together with the actual failure mode.
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Applicable to peel adhesion and laminate-separation evaluations
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Adhesive research, packaging development, troubleshooting, and material qualification
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| Reporting Unit |
Force reported as N/width, such as N/25 mm, or in another unit required by the selected method.
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Reporting force per unit width makes results more comparable when specimen widths differ.
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ASTM, ISO, FINAT, and PSTC methods may specify different reporting conventions
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Technical specifications, certificates of analysis, laboratory reports, and customer validation
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| Best General-Purpose Configuration |
A motorized universal tester with programmable speed, interchangeable load cells, 90° and 180° fixtures, digital curve capture, and exportable test reports.
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This configuration provides the flexibility needed for routine tape, label, film, laminate, and adhesive testing without relying on a single test setup.
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Select the exact fixture and procedure according to the material and applicable standard.
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Research laboratories, packaging plants, adhesive manufacturers, converters, and inspection services
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