Wet Shear Test for Corrugated - OpTest

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Wet Shear Test for Corrugated

The wet shear automatic instrument is a variation of the TAPPI T 842 standard. The standard allows you to obtain the time of shear, in seconds, of the glue in a sample of corrugated board submerged in water with a certain constant load applied (Wet Shear Adhesion Test). A weight of 1 or 2 kilos is applied depending on the strength of the board. It is an extremely important test in fresh fruit packaging, for example banana boxes, were the humidity and low temperature are very demanding. Another example is ice cream and frozen fish packaging that are going to be stored at low temperatures.

Product Name Wet Shear Test for Corrugated
Product Code PTA-31301
Test Material Board
Manufacturer The PTA Group / IDM (PTA)
Availability from OpTest Exclusive to Canada

• Structure made of stainless steel
• Water tank with level markings for optimum filling
• Adjustable machine feet to adjust the leveling of the equipment. Auxiliary level is supplied
• 4'' touch screen for control, configuration of parameters and visualization of results
• The equipment is supplied with two masses (1 kg and 2 kg) to tension the sample during the test. Depending on the type of cardboard to be tested, one or the other mass must be mounted
• USB port for printer connection
• RS-232 port for PC connection
• 2 test modes: automatic and manual. In automatic mode, the timer starts automatically after submerging the sample. In manual mode, the operator must initialize the timer
• Results in seconds(s)
• CE Mark
• Electrical Connection: 220V/50Hz/1A and 110V/60Hz/1A
• Weight (equipment only / with packaging): 26 kg / 36 kg
• Dimensions (W x L x H - equipment only / with packaging): 470 x 200 x 450 mm / 720 x 320 x 640 mm


• Control of the machine by means of a touch screen and two auxiliary buttons. From this screen it is possible to carry out tests, in addition to managing all the functions and configurations implemented, which allows a total autonomy of the equipment.
• Simple and intuitive operation menu, configurable in different languages.
• 3 display modes of the measurement results: real-time value, average value, or value of each individual test.
• Possibility to visualize the tests graphically (diagrams).
• Statistical table up to a maximum of 20 tests, with average value, standard deviation, and maximum and minimum values. 



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