Ultrasonic Tester for the Determination of Paper/Board and Liquid Properties via the Wetting and Absorption Behavior specific of high viscous liquids, as for example adhesives, printing ink, coating colors
Main application:
prediction of converting properties
printability
Offset: strike-in of fountain solutions, oils or inks
Gravure: missing dots potential in LWC papers
Flexo: wetting and penetration behavior of flexo inks
Ink jet: wetting and penetration behavior of ink jet inks glueability
Surface sizing, surface porosity
Film generation of dispersion adhesives
Dynamic Water Retention of coating colors
Advantages:
No cleaning effort after measurement
Small amount of testing liquid required: 3.5 ml
Main users:
Chemical suppliers (adhesives, printing ink)
Producers of paper/board
The test liquid is applied on the horizontal area of a measuring cell, which includes the ultrasound transmitter, possibly together with a protection foil. The paper sample is applied by means of double-sided adhesive tape at the measuring head, which contains the ultrasound receiver.
For a measurement the measuring head is lowered together with the paper sample until it is contacted with the test liquid.