Product Introduction

UHMWPE film biaxial stretcher is specially developed for polymer films such as ultra-high molecular weight polyethylene (UHMWPE). It can perform biaxial synchronous/asynchronous stretching of square specimens along the X and Y axes to simulate industrial biaxial stretching processes. Equipped with an independent multi-zone temperature control system, it collects real-time tensile stress curves, supporting formula development, process parameter exploration and orientation performance research of UHMWPE films.

Adopting a horizontal structure, the machine features independent servo drives for X and Y axes and pneumatic clamping fixtures. It enables uniaxial constrained/unconstrained stretching and biaxial synchronous/asynchronous stretching, with precise control over stretch ratio, stretching speed and forming temperature. It is also applicable to laboratory R&D of various polymer functional films and lithium-ion battery separators.

Product Performance

✅ Customized for UHMWPE material characteristics

Tailored for the high viscosity and hard-to-stretch properties of UHMWPE. It delivers a maximum stretch ratio up to 10:1 and wide-range temperature control, meeting the requirements for orientation and forming process research of UHMWPE films.

✅ Independent servo drive for dual axes

Separate control of X and Y axes supports synchronous / asynchronous stretching to freely simulate diverse production processes. Process recipes can be saved for repeatable tests.

✅ Independent and precise multi-zone temperature control

Zoned temperature control for stretching zone, setting zone and cooling zone. Steady-state temperature accuracy ±1.5 ℃, covering ambient temperature to 250 ℃, compatible with forming temperature requirements of UHMWPE and various polymer films.

✅ High-pressure pneumatic clamping system

20 sets of pneumatic fixtures with stable clamping force ≥200 N per jaw. Convenient sample loading and uniform stress distribution on specimens prevent sample slippage during stretching, ensuring repeatable test data for UHMWPE specimens.

✅ High-speed real-time data acquisition

Equipped with upper computer control system to collect stress data in real time and output stress-time curves. The whole test process is visual; historical data can be stored, queried and exported.

✅ Multiple stretching process modes

Supports uniaxial constrained/unconstrained stretching, biaxial synchronous stretching and biaxial asynchronous stretching. One unit completes research on multiple stretching processes for new material formula development.

Application Fields

●R&D of ultra-high molecular weight polyethylene (UHMWPE) films

●Lithium-ion battery separators, polymer functional films and special packaging films

●Plastic modification and orientation performance research of polymer materials

●Process development in R&D laboratories of universities, research institutes and enterprises

A square UHMWPE film specimen is fixed by pneumatic clamps on all four sides. Under the preset multi-zone oven environment, the X/Y axis servo mechanisms drive the clamps to stretch the specimen at predefined ratio and speed, inducing biaxial orientation of the polymer film. The system continuously monitors parameters such as tension and temperature, records stress variation curves, completes biaxial stretching forming tests of UHMWPE films, and evaluates the stretching process and mechanical properties of materials.