Information on the most widely used ASTM standards within the materials testing industry
Adhesives
Adhesive Industry & Material Testing: Types, Equipment, Importance | UnitedTest
1. Overview of the Global Adhesive Industry
The adhesive (glue & sealant) industry is a foundational material sector that delivers bonding, sealing, laminating and fixing solutions for downstream manufacturing. It covers pressure-sensitive adhesives (PSA), structural adhesives, hot-melt adhesives, water-based & solvent-based glues, UV-curing adhesives and industrial sealants, widely applied in automotive, aerospace, packaging, medical devices, construction, electronics and new energy fields .
As industrial upgrading advances, end-users demand higher standards for bonding reliability, environmental compliance, temperature resistance and aging durability. This makes standardized adhesive material testing the core link of R&D, production quality control and market compliance. Beijing United Test Co.,Ltd. (Brand UnitedTest), a professional adhesive testing machine manufacturer, specializes in high-precision adhesive testing equipment and one-stop testing solutions tailored to the full lifecycle of adhesive materials for labs and industrial production lines.
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2. Main Classification of Adhesive Materials
Adhesives are categorized by chemical base, curing mechanism and application scenario, each requiring dedicated testing indicators and equipment:
• By Carrier Phase: Water-based adhesives (low VOC), solvent-based adhesives, 100% solid/hot-melt adhesives, solvent-free sealants
• By Curing Method: Room-temperature curing, heat curing, UV/LED light curing, moisture curing, pressure-sensitive (no curing)
• By Functional Type:
○ Pressure-Sensitive Adhesives (PSA): Tapes, labels, protective films (focus on peel, tack, shear resistance)
○ Structural Adhesives: Epoxy, PU, acrylic for load-bearing bonding (focus on tensile, compression, fatigue strength)
○ Special Adhesives: Medical-grade, high-temperature resistant, conductive, flame-retardant adhesives (focus on safety and environmental indicators)
3. Core Testing Types for Adhesive Materials (Industry Standard)
Adhesive testing is divided into three major modules: rheological & process performance (before curing), bonding mechanical performance (after curing), and durability & environmental reliability (long-term service). All tests comply with ISO, ASTM, FINAT and GB standards.
3.1 Rheological & Fresh Material Testing (Uncured Adhesives) | Determines production applicability, coating uniformity and curing feasibility, critical for formula development and batch consistency control. |
• Viscosity & Flow Curve Test: Measure dynamic viscosity under different shear rates to judge pumping, coating and leveling performance • Viscoelasticity Test: Detect storage modulus (G’) and loss modulus (G’’) to analyze thixotropy and sagging resistance • Curing/Kinetic Test: Monitor viscosity change & curing speed under temperature/UV stimulation for process parameter setting • Density & Solids Content Test: Basic physical indicators for batching and cost control | |
3.2 Bonding Mechanical Performance Testing (Most Critical) | The core evaluation index of adhesive final performance, directly determining product service safety. Most buyers search for adhesion strength testing, PSA peel and shear testing to verify batch quality before bulk procurement. |
| • Peel Strength Test (Most common for tapes/PSA): ○ 180° Peel Test (FINAT FTM1): Standard test for label and tape stripping force ○ 90° Peel Test (FINAT FTM2): Evaluate bonding between flexible and rigid substrates ○ T-Peel Test: For flexible-to-flexible bonded assemblies (medical packaging, soft components) • Tensile & Compression Bond Strength: For structural adhesives, test maximum load of bonded joints under tension/compression • Shear Strength Test: Static/dynamic shear resistance, key for automotive and aerospace load-bearing bonding • Tack Test (Initial Adhesion): Probe tack & rolling ball tack to measure instant bonding ability of PSA • Hold Power Test (Sustained Adhesion): Measure creep resistance and failure time under constant load | |
| 3.3 Durability & Environmental Reliability Testing | Verify long-term performance under simulated service conditions to avoid failure caused by aging, humidity or temperature fluctuation. |
• Thermal & Humidity Aging Test: High/low temperature, damp heat cycle to accelerate material aging • Thermal Cycling Test: Simulate extreme temperature changes for automotive and outdoor adhesive parts • Water & Chemical Resistance Test: Soak in water, oil or solvent to test bonding retention rate • Abrasion & Wear Test: Evaluate surface scratch resistance of cured adhesive layers • Fatigue Test: Repeated dynamic loading to verify joint lifespan under cyclic stress | |
4. Required Testing Machines for Adhesive Industry
UnitedTest integrates all above test scenarios into standardized & customized adhesive testing machines, covering the full workflow from raw material incoming inspection, formula R&D to production QC and finished product delivery. Our core product line focuses on pressure sensitive adhesive testing equipment and structural adhesive mechanical testers for global industrial clients.
| 4.1 Rheology & Physical Property Test Equipment | • Rotational Viscometer: Test viscosity of water-based, solvent-based and sealant materials • Dynamic Rheometer: Professional viscoelasticity, thixotropy and curing kinetic analysis • Solids Content & Density Tester: Fast detection of basic formulation indicators |
4.2 Core Mechanical Bonding Test Machines (UnitedTest Main Products) | • Universal Adhesion Tensile Testing Machine: Best-selling all-in-one adhesive test equipment for peel, tensile, shear, tack and hold power tests; fully compliant with ISO 4587, ASTM D3330, FINAT FTM standards, the most widely used adhesion strength tester for adhesive factories • 90°/180° Peel Test Bench: Dedicated fixture for tape, film and label peel strength testing • T-Peel Testing Fixture & Module: For flexible substrate composite parts • Initial Tack Tester (Probe/Rolling Ball Type): Professional PSA initial adhesion test machine, dedicated for pressure sensitive adhesive tack test. as per FINAT FTM 9 and ASTM D2979 standards. • Hold Power Testing Rack: Multi-station simultaneous testing for batch quality control. |
| 4.3 Environmental & Durability Test Chambers | • Temperature & Humidity Aging Chamber • Thermal Cycling Test Chamber • Water Immersion & Chemical Resistance Test Tank • Abrasion Resistance Tester (Taber Type) |
| 4.4 Customized Special Test Solutions | UnitedTest provides non-standard customized equipment for special scenarios: UV curing in-situ test systems; High-temperature resistant adhesive fatigue test benches; Medical adhesive biocompatibility auxiliary test modules; New energy battery adhesive dedicated testing lines. |
5. Why Adhesive Material Testing Is Indispensable
5.1 Quality Consistency & Batch Control
Adhesive formula batch variation, raw material difference and production parameter drift easily cause bonding failure, peeling or delamination. Standard adhesive material testing ensures batch-to-batch consistency, reduces defective rate and cuts production loss for tape, sealant and structural adhesive manufacturers.
5.2 Compliance & Market Access
Automotive, medical, food packaging and aerospace industries have mandatory certification requirements for adhesive VOC, toxicity and mechanical performance. Qualified test data is the premise of market access .
5.3 R&D Efficiency & Formula Optimization
Rheological and mechanical test data help engineers screen formulas, optimize curing processes, shorten R&D cycles, and accelerate new product launch .
5.4 Safety & Risk Avoidance
Unqualified adhesives may cause component falling, sealing failure or safety accidents. Durability testing predicts long-term performance, eliminating hidden risks in advance.
6. UnitedTest: Professional Adhesive Testing Machine & Solution Provider
UnitedTest is a reliable global manufacturer of adhesive testing machines and polymer material testing equipment. With 15+ years of industry experience, we deeply understand the pain points of adhesive manufacturers in formula R&D, incoming material inspection, online production QC and third-party certification testing.
• Full Coverage: From uncured rheology to cured mechanical strength, from basic indicators to long-term durability, one-stop test equipment layout
• Standard Compliance: All machines support ISO, ASTM, FINAT, GB and other mainstream industry standards, with traceable test data for certification
• Customized Solutions: Tailor test fixtures, software algorithms and multi-station test lines for PSA, structural adhesives, medical and new energy adhesives
• User-Oriented Service: Provide industry-specific test guides, parameter templates and after-sales calibration services to help customers quickly deploy testing workflows.
Contact UnitedTest today to get a free customized adhesive material testing proposal, machine parameter sheet and ex-factory quotation for your laboratory quality control and industrial production line!
Related Standard
ASTM D3121 – Standard Test Method for Tack of Pressure-Sensitive Adhesives by Rolling Ball
ASTM D3121 defines methods of comparative initial tack (instant stickiness) of pressure-sensitive adhesives (PSAs) via a rolling steel ball approach
ISO 29863 Self adhesive tapes – Measurement of static shear adhesion
ISO 29863 evaluating the load-bearing performance of pressure-sensitive adhesive (PSA) tapes, developed jointly with the International Association for the Self Adhesive Tape Industry (AFERA) and the Pressure Sensitive Tape Council (PSTC).
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.
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.
ASTM D1002 is the most widely used standard test for measuring the apparent shear strength of metal‑to‑metal adhesive single‑lap joints under tension loading. It provides comparative data for adhesive selection, process control, and quality assurance in structural bonding applications. It is the most common test for evaluating adhesive shear performance.
ASTM D897 prescribed a method for determining the comparative tensile properties of adhesive bonds in a standard specimen when tested under specific conditions. Its primary purpose was to measure the tensile strength of an adhesive bond between two rigid substrates (metal to metal).
ASTM D1781: Standard Test Method for Climbing Drum Peel for Adhesives
ASTM D1781 test method covers the determination of the peel resistance of adhesive bonds between: a relatively flexible adherend and a rigid adherend; and the relatively flexible facing of a sandwich structure and its core, when tested under specified conditions.
ASTM D1876: Standard Test Method for Peel Resistance of Adhesives (T-Peel Test)
ASTM D1876 test method is primarily intended for determining the relative peel resistance of adhesive bonds between flexible adherends by means of a T-type specimen using a tension testing machine. The bent, unbonded ends of the test specimen shall be clamped in the test grips of the tension testing machine and a load of a constant head speed shall be applied. An autographic recording of the load versus the head movement or load versus distance peeled shall be made. The peel resistance over a specified length of the bond line after the initial peak shall be determined.
ASTM D3167 Peel Resistance Adhesives Test - Floating Roller
ASTM D3167 Floating Roller Peeling test method covers the determination of the relative peel resistance of adhesive bonds between one rigid adherend and one flexible adherend when tested under specified conditions of preparation and testing.
ASTM D5041: Standard Test Method for Fracture Strength in Cleavage of Adhesives in Bonded Joints
ASTM D5041 test method covers the determination of fracture strength in cleavage of adhesive bonds when tested on standard reinforced plastic specimens and under specified conditions of preparation and testing.
It describes the fracture strength testing of flat adhesively bonded reinforced plastic specimens. It involves imposing controlled cleavage stresses to split apart the specimen using a movable wedge.
ASTM D6862 test method covers the determination of the resistance-to-peel strength of an adhesive bond between one rigid adherend and one flexible adherend when tested at an angle of approximately 90 degrees under specified conditions of preparation and testing.
A variation in thickness of the adherends will generally influence test values. For this reason, the thickness of the adherends used to make the test specimens shall be specified in the material specification. When no thickness is specified, the flexible adherend shall be 0.60 mm (0.025 in.) thick and the rigid adherend shall be 1.60 mm (0.060 in.) thick.
ISO 10123:2013 Adhesives — Determination of shear strength of anaerobic adhesives using pin-and-collar specimens
ISO 10123 applies to anaerobic curing liquid adhesives used for locking and sealing threaded fasteners and to other adhesives. These adhesives cure without being dependent on exposed air. ISO 10123 defines a test method to assess this material in a way that is similar to the shear stresses that threads are exposed to in their regular environment, but with defined surface areas to make shear strength calculations straightforward. The common name of this technique is the pin-and-collar method.
ISO 29862 Self adhesive tapes — Determination of peel adhesion properties
ISO 29862 specifies peel adhesion force of pressure-sensitive adhesive (PSA) tapes under controlled laboratory conditions. It covers four core 180° peel test methods plus two normative annexes for low-temperature and 90° peel testing, serving as a universal quality control and material comparison benchmark for adhesive tape manufacturers, laboratories and end users worldwide.
ISO 8510-2: Adhesives — Peel test for a flexible-bonded-to-rigid test specimen assembly Part 2: 180° peel.
ISO 8510-2 specifies the 180-degree peel adhesion test for evaluating the adhesive peel strength of bonded materials. This standard is essential in industries such as packaging, medical devices, electronics, and adhesives, where strong and reliable adhesion is crucial. The test provides critical insights into the performance and durability of adhesives by measuring the force required to separate a flexible adherend from a rigid adherend under controlled conditions.
Testing Procedure:
The rigid adherend is clamped into the machine’s fixed grip.
The flexible adherend is clamped into a self-aligning grip.
The machine applies force parallel to the bonded plane, pulling the flexible adherend at a 180-degree angle.
ISO 11339 Adhesives — T-peel test for flexible-to-flexible bonded assemblies.
It specifies a T‑peel test for the determination of the peel resistance of an adhesive by measuring the peeling force of a T‑shaped bonded assembly of two flexible adherends. The ISO 11339 test method is suitable for self-adhesive tapes that are prepared under the relevant guidelines within this test standard. For a T-peel test for a flexible-to-flexible assembly, the force is applied to the unbonded ends of the specimen . The angle between the bond line and the direction of the applied force is not fixed.
ISO 13007-4 Ceramic tiles — Grouts and adhesives Part 4: Test methods for grouts
EN 13888-2: Grouts for ceramic tiles - Part 2: Test methods
ISO 13007-4 standard describe the methods for determining characteristics for grouts used in internal and external installation of ceramic tiles. These standard specifies the methods for determining characteristics for grouts used in internal and external installation of ceramic tiles.
The strength test for ceramic tiles grouts involves several methods to determine their performance characteristics.
Test methods:
- Determination of flexural and compressive strength;
- Determination of water absorption;
- Determination of shrinkage;
- Determination of resistance to abrasion;
- Determination of chemical resistance.
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