Home >> Products >> Biaxial & Triaxial Testing Machines >> High temperature Film Biaxial tensile testing machine
Cross-type four-axis planar biaxial tensile testing machine, biaxial tensile tester

High temperature Film Biaxial tensile testing machine

Model: UT1029B-HA31; ISO 17555, ISO 15987, ISO 15988

Biaxial film stretching machine can stretch film samples of a certain size to the required stretching ratio at suitable temperatures and times. The data obtained from the tests can be used by researchers for analysis.

The biaxial film stretching machine is made up of a clamping assembly, stretching assembly, stretching mechanism moving assembly, hot oven assembly, pneumatic air curtain assembly, and an electrical control system. 

It is a data-driven engineering instrument with good repeatability and accurate data. It can be operated offline, mimicking a production line, and can improve experiment efficiency while shortening product development cycles.

ISO 17555 Biaxially oriented polypropylene (BOPP) film for general purposes

ISO 15987 Plastics - Film and sheeting - Biaxially oriented polyamide (nylon) films

ISO 15988 Plastics - Film and sheeting - Biaxially oriented poly(ethylene terephthalate) (PET) films

General introduction

The biaxial film stretching machine is made up of a clamping assembly, stretching assembly, stretching mechanism moving assembly, hot oven assembly, pneumatic air curtain assembly, and an electrical control system. 

The biaxial film stretching machine can stretch film samples of a certain size to the required stretching ratio at suitable temperatures and times. The data obtained from the tests can be used by researchers for analysis.

It is a data-driven engineering instrument with good repeatability and accurate data. It can be operated offline, mimicking a production line, and can improve experiment efficiency while shortening product development cycles.


It's mainly used for testing and analyzing the mechanical properties of non-metal materials like PET, PA, PP, PS, and EVA under both uniaxial and biaxial stretching. It has three closed-loop control modes: stress, strain, and displacement, and can measure maximum force, tensile strength, bending strength, compressive strength, elastic modulus, elongation at break, yield strength, creep elongation, constant force elongation, and the relationship between a specified force and deformation.

High temperature Film Biaxial tensile testing machineHigh temperature Film Biaxial tensile testing machine


This system can perform synchronous stretching as well as asynchronous stretching, meaning when different stretching speeds are set for X and Y, it can show how the material deforms under force and how the force value decreases. 

Main features

  • Key feature
  • Applicable Materials (mainly polymer films)
  • Standard
  • Optional Device
  • Core Working Principle

High-strength integrated frame, practical and attractive

Touchscreen control with user-friendly design for easier operation

Bi-directional high-performance servo motor drive for variable speed stretching in one or both directions

Can perform one-way restricted, one-way unrestricted, two-way synchronous, and two-way asynchronous stretching

Multiple PID temperature control points for more precise, comprehensive, and accurate temperature management


BOPP biaxially oriented polypropylene film (according to GB/T 10003, ISO 17555);
BOPA biaxially oriented nylon polyamide film (according to ISO 15987, GB/T 20218);
BOPET biaxially oriented polyester film (ISO 15988, GB/T 16958);
PE, PVC, PS cast films, lithium battery separators, optical release films, flexible packaging composite films;
Elastic films, geotextile membranes, medical polymer films, thermoforming sheets.


R&D of new products in the high-end film field

Testing and analysis of the physical and chemical properties of new material films in the lab

High-end film formulation design

Process research and parameter optimization


ISO 527-1 Plastics — Determination of tensile properties Part 1: General principles

ISO 527-3 Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets

ISO 17555 Biaxially oriented polypropylene (BOPP) film for general purposes

ISO 15987 Plastics - Film and sheeting - Biaxially oriented polyamide (nylon) films

ISO 15988 Plastics - Film and sheeting - Biaxially oriented poly(ethylene terephthalate) (PET) films

GB/T 10005 Biaxially oriented polypropylene (BOPP) and low-density polyethylene (LDPE) composite films and bags

GB/T 18006.1-2009 General technical requirements for disposable plastic tableware

ISO 7500-1:2018 Metallic materials — Calibration and verification of static uniaxial testing machines

Part 1: Tension/compression testing machines — Calibration and verification of the force-measuring system


High and low temperature environmental chamber (-70~180℃): tests high-temperature tensile stretching and low-temperature toughness, suitable for film heat shrinkage and thermoforming conditions; 

High-definition in-situ camera system: records the entire process of film stretching, necking, delamination, and tearing; 

Pneumatic inflation attachment: simulates the biaxial stretching forces in blown film composite.


Specimen Clamping: The cross-shaped polymer film is placed in the center, with each of the four arms fixed to the X/Y clamps, and auto-aligned.
Control Mode Selection:
Equal Biaxial (1:1): X and Y stretch at the same speed simultaneously, ensuring uniform stress and strain, mimicking the orientation process of biaxially stretched film production.
Unequal Biaxial: Customize the X/Y stretching speed or force ratio to detect differences in film mechanics (anisotropy).
Synchronous Acquisition: Two-axis force sensors and optical extensometers record load, displacement, and strain in real-time simultaneously.
Data Termination: When the film breaks in any direction, the machine stops automatically, and the software automatically calculates biaxial mechanical properties and generates a standard report.

Main Technical Specification

Applicable materialsPE, PP, PET, PTFE, PVDF, etc.
Sample thickness0.02-1.5mm
Sample size100 mm × 100 mm
Stretch ratio10:1 (for smallest sample size)
Stretching speed0-300mm/s (stepless adjustable)
Tensile force1000N
Operating temperatureRoom temperature - 250℃
Temperature control accuracy±3℃
Tensile motor power1kW
Working voltage380VAC±10%, 220VAC±10%, 50Hz
Rated powerAbout 22kW
Dimensions2040mm × 1050mm × 1680mm
WeightAbout 1000kg


Main Accessories

Frame AssemblyHigh-strength integrated frame, lightweight, attractive, and durable.
Fuma Integrated High Load-bearing Shock-absorbing Caster Wheels
Clamping AssemblyUses self-developed mechanical self-locking clamps
3 per side, 1 per corner, total of 16
Manual clamping pieces
Stretching AssemblyX and Y axes driven independently, constant speed mode
Stretching methods: Unidirectional with (or without) restraint, bidirectional synchronous (or asynchronous) stretching

1.0 kW servo motor, dedicated servo driver, dedicated servo motor bevel gear reducer

Ball screw high-sliding assembly and heat-resistant miniature linear guide, smooth stretching

Stretching Mechanism    Moving Assembly0.75 kW servo motor, dedicated servo driver, dedicated servo motor reducer
Ball screw transmission, smooth movement
Stretching Oven Assembly1 furnace body, 18 kW nickel-chromium electric heating wire, stainless steel inner liner, high heating rate
2-point temperature measurement and control, precise temperature control
0.12 kW dedicated straight-blade insulated blower, circulating airflow 6m³/min
Stepless variable frequency speed drive
Pneumatic Air Curtain    AssemblyHeat-resistant miniature linear guide, thin-type cylinder drive
Control System10-inch touchscreen, provides operation for the stretching system, temperature control system, etc., displays temperature curves, stretching torque curves, and fault alarm information
Control SystemComposed of a computer programmable controller and upper-level control system, featuring adaptive control for temperature and stretching, graphical display of process parameters, and special functions not achievable by traditional control systems, greatly enhancing the system’s user-friendliness, intelligence, and safety.
Measurement SystemTemperature measurement: 0-400℃
Electrical CabinetFrame-integrated  electrical cabinet, aluminum alloy mounting plate;
French Schneider low-voltage electrical components, dedicated cabinet fan and ventilation filter.
Electrical SafetyProper grounding with clear ground mark;
Automatic shutdown on fault and emergency stop switch for manual safety shutdown.


Standard

ISO 17555 BOPP films biaxial stretch testing methods

ISO 17555 applies to packaging-grade BOPP films containing ≥95% polypropylene resin; usable as single-layer film or laminates paired with other plastic substrates. The test stipulated in ISO 17555 mainly include, tensile strength & strain at break, Dimensional change on heating (thermal shrinkage), Coefficient of water vapour transmission, Haze, Wetting tension etc., 

ISO 15987 Biaxially oriented nylon films tensile expansion testing methods

ISO 15987 specifies classification, mandatory visual, dimensional, mechanical, barrier, optical, surface energy, and food contact safety requirements for transparent BOPA film, supplied in roll form, either used standalone or laminated with PE, CPP, PET, aluminium foil for multi-layer packaging structures. The test stipulated in ISO 15987 mainly include, tensile strength & tensile strain at break, Oxygen transmission coefficient, Dimensional change on heating, Haze, Wetting tension etc., 

ISO 15988 Biaxial stretch PET films test methods details

ISO 15988 specifies requirements for biaxially oriented transparent PET (BOPET) films, mainly used for packaging, either alone or as a laminated layer with other films. The main test stipualted in this standard include tensile strength and strain, Dimensional change on heating, Oxygen transmission coefficient, Water vapour transmission coefficient, Haze, Wetting tension, thickness etc., 

Require More Customized Solutions?

We offer customization to meet your specific needs. Our expert team will collaborate with you to develop the perfect product for you
Customize Now

Beijing United Test Co., Ltd.