Information on the most widely used ASTM standards within the materials testing industry
For adhesives, ASTM D6195, EN 1719, Finat-FTM9, GBT 31125; similar to PSTC-16.
Loop Tack Test Fixture is a specialized attachment for tensile testing machines, designed to measure the initial tack (quick stick) of pressure-sensitive adhesives (PSAs) by forming a standard loop with the adhesive surface facing outward, bringing it into controlled contact with a test panel, and measuring the peak force required for separation. It complies with key standards like ASTM D6195, EN 1719, FINAT FTM 9, PSTC 16, and GB/T 31125-2014.
General introduction
Loop Tack Test Fixture is a specialized attachment for tensile testing machines, designed to measure the initial tack (quick stick) of pressure-sensitive adhesives (PSAs) by forming a standard loop with the adhesive surface facing outward, bringing it into controlled contact with a test panel, and measuring the peak force required for separation. It complies with key standards like ASTM D6195, EN 1719, FINAT FTM 9, PSTC 16, and GB/T 31125-2014.
Working Principle:
Sample Preparation: Cut adhesive tape/sheet into a standard strip (25mm wide × 125mm long) and form a loop with adhesive facing outward.
Mounting: Clamp loop ends in the upper grip; secure the substrate panel in the lower holder.
Testing: Bring the loop into contact with the substrate at 300mm/min (standard speed); retract immediately at the same speed.
Measurement: Record the peak separation force (loop tack value), representing the initial adhesion strength.

Main Features
| Component | Purpose | Key Specifications |
|---|---|---|
| Loop Holder | Forms and maintains the standard loop geometry | Accommodates 12.5-25mm wide, 125mm long samples |
| Upper Grip | Secures the loop ends (typically 10mm clamping length) | Rubber-coated jaws to prevent sample damage |
| Substrate Panel Holder | Secures the test surface (stainless steel, glass, or aluminum) | Ensures flat, consistent contact area |
| Quick-Change Mechanism | Facilitates efficient sample replacement | Allows multiple tests between cleaning cycles |
| Force Transducer Interface | Connects to load cell (typically 50-500N capacity) | Ensures accurate force measurement |
Pressure-Sensitive Adhesives (PSAs): Tapes, labels, medical dressings, protective films;
Packaging Materials: Sealants, laminates, and bonding agents;
Consumer Products: Adhesive components in electronics, automotive, and construction;
Material R&D: Formulation optimization for initial grab performance.
Specification
Max. load: 500 N
Coupling: M20 (Further couplings on request)
Specimen carrier plate: 25 mm x 70 mm x 3 mm (width x length x thickness)
Glass (Finat FTM-9, DIN EN1719)
Stainless steel (ASTM-D6195, EN1719)
Weight: 1.2kg
Scope of supply:
1 fixture with specimen carrier plate;
Additional upper grip.
Standard
ASTM D6195 provides procedures to quantify the loop tack property of pressure-sensitive adhesives (PSAs)—a critical metric for adhesives that form rapid, measurable bonds upon contact (e.g., tapes, labels, stickers). The standard focuses on two test methods (A and B) and is widely used for quality control and research in packaging, labeling, and adhesive manufacturing. It provides a quantitative measure of an adhesive's ability to form an immediate bond upon brief, light contact with a substrate, simulating real-world application conditions where minimal pressure and dwell time are typical.
EN 1719 specifies test method to quantify the loop tack of coated pressure-sensitive adhesives (PSAs)—a critical property for adhesives used in applications requiring rapid, low pressure, initial bonding (e.g., labels, tapes, disposable hygiene products). The standard aligns with European Committee for Standardization (CEN) requirements and is intended for quality control, research, and regulatory compliance in the adhesive and packaging industries.
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