Contact Angle, Surface Interface Tools

VPA series

With the development of our Versatile Peel Analyzer VPA series, measurements, once impossible or hardly achieved with conventional tensile strength testers, have finally become possible. When equipped with our low force load cell with a full scale rated capacity of only 0.1N, even minuscule peel strengths as low as 0.001N can be measured and easily compared.
The most remarkable feature of our Versatile Peel Analyzer VPA series is, that the peel behavior of composite materials, such as packaging materials, laminated materials, laminated films, coating films, ceramic green sheets, etc., can be evaluated under freely adjustable peel angles from 0 to 180º using Kyowa’s unique proprietary 'Flat Plate Cross Stage Method' and self-developed analysis software.
While both the standard VPA-H200 model and the compact-sized VPA-H100 model share the same functions and features, the sample stage of the VPA-H200 with a length of 200mm allows for an effective peel distance that is twice of the VPA-H100. The maximum speed of the sample stage to 30.000mm/min allows for a peel rate that is 2.5 times higher than that of the VPA-H100.

Features

• Peel angles between 0 and 180º
• Peel rates from 3 up to 30.000mm/min
• Effective peel area of up to 40x200mm
• Quick and easily exchangeable load cell units (0.1N, 1N, 5N, 10N, 50N, and 100N full scale rated capacity) incl. calibration kit
• Overload protection (at 90% of the full scale rated capacity of the load cell)
• Protective cover with interlock safety switch
• Emergency stop button

Options

Hardware

• Heater type temperature-controlled sample stage for measurements from ambient to +180℃
• Jacket type temperature-controlled sample stage for measurements from +10 to +70℃
• 2kg manual hand roller for preparing tapes
• Peel behavior observation by a special camera system
• Equipment for tensile strength testing (applicable only with 50N or 100N load cell units)
• A wide variety of different kinds of grips, such as pneumatic grips
• Special sample stage for 180º peel tests

Applications

• Effects of peel angles and peel rates on peel behavior of PSA tapes, packaging films, labels, release papers/films
• Peeling properties between carbon fiber prepregs and release papers
• Releasing strength between protective films and critical surfaces such as phone displays, glasses, metals, carpets
• Peel/bond strength between laminated film layers, holograms on plastic cards, coating films on glass or metal, adhesive tapes on silicon wafer and frames
• Adhesive strength between thin-film electrodes and current collectors in lithium-ion batteries
• Adhesive strength between ceramic green sheets and carrier films for laminated ceramic capacitors
• Visualization/observation of the peeling process from above and behind the adherend
• Low force tensile strength tests of various films

Specifications