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Flexible Packaging film Tensile properties indicate how the material will react to forces being applied in tension. A tensile test, also known as tension test, is a fundamental mechanical test where a carefully prepared specimen is loaded in a very controlled manner while measuring the applied load and the elongation of the specimen over some distance. Tensile tests are used to determine the modulus of elasticity, elastic limit, elongation, proportional limit, and reduction in area, tensile strength, yield point, yield strength and other tensile properties.
Beyond basic tensile measurement, flexible packaging labs frequently require peel strength testing for adhesive‑laminated film layers and puncture resistance testing to evaluate material resistance to sharp‑point penetration. These three core evaluations‑‑tensile, peel and puncture‑‑deliver complete mechanical performance data for packaging material qualification.
Tensile properties of thin film used in Flexible packaging are tested comply to ASTM D882–Standard Test Method for Tensile Properties of Thin Plastic Sheeting, standard ASTM D828 Standard Test Method for Tensile Properties of Paper and Paperboard Using Constant‑Rate‑of‑Elongation Apparatus and ISO 37 Rubber, vulcanized or thermoplastic —Determination of tensile stress‑strain properties. Peel and puncture test procedures follow widely‑recognized industry standards for composite films, laminates and multi‑layer packaging materials.
The most common testing machine used in tensile, peel and puncture testing is the universal testing machine. The machine must have the proper capabilities for the test specimen being tested.
GBPI GBH‑1 Electronic Tensile Tester supports tensile, peel and puncture multi‑scene testing, with force range 0~500N (0~3000N optional ), 1500% elongation; force accuracy within ±0.5% of the displayed value (grade 0.5) and test speed 0‑500mm/min (infinitely variable speeds). Suitable for thin plastic film per ASTM D882, laminated flexible packaging, paper, paperboard and rubber samples.
Technical Parameters
- 1. Versatile functions, interface and operation modes; multiple parameters setting for tensile, peel and puncture test workflows.
- 2. Computer controlled, online display of test result, auto data storage and analysis, multiple curves record, zoom in/out, computer print. Supports test‑result output for tensile strength, peel force and puncture peak‑load data.
- 3. Modularized, can extend function to add peel fixture or puncture probe accessories.
- 4. Control module can be built in (for simplistic structure and saving space), or be installed external (for easy upgrade, maintenance, and independent working without computer)
- 5. 3 levels of security protection.
- 6. High sampling speed (100 times/s) captures transient peak force during peel separation and puncture piercing.
- 7. Core part is imported, with high precision and durable.
- 8. Table standing design for sitting operation, easy and comfortable.
- 9. Various clips & probes optional for tensile, peel and puncture different test purposes.
