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Rayven Release Testing

Rayven Microscope
Back- Release-liner manufacturer/supplier & Converter

Common test of a release liner or tape is called a peel test.
This test involves the peeling of a test sample at a set speed and angle. The apparatus measures the force needed to peel the sample.

The output of the test is the amount of force (grams are the typical units), average force, and peak force.

Some of our release testing machines will give us graphical output plots.

The testing of release liners utilizes a standard test tape. Rayven commonly use Tessa 7475 tape (lot number controlled) as Rayven's standard test tape. For accurate release testing with unique adhesives, we can apply and test the customers actual adhesive or test tape.

Rayven utilize the following Peel Testing Apparatus:

Shear properties of adhesives can be evaluated with shear testing tool. Rayven also uses a PSTC unit for this test.


Color and Gloss Testing
In many coatings color and gloss are very important. This is especially true with inkjet coatings. Rayven test these characteristics with the following tools:

Coating Thickness
Thick coatings such as adhesives and inkjet coatings can are tested with TMI 49-70 digital measurement tools. Silicone release coatings are measured via on line X-Ray scanners from Spectro/ASOMA. This scanner measures both cross web and down web during the entire production run. Coating thickness reports from the scanner are available for each roll produced. Rayven also have the ASOMA Model 200T X-ray fluorescence lab unit for discrete sample testing.

Other Testing Apparatus:
  • Viscosity - Brookfield
  • pH - Orion 420A
  • Stiffness - Teledyne 150B, Taber V-5
  • Friction - Kayeness
  • Static charge - ETS
  • Weight - Various
  • Quality Control
  • Silicone Release Coated Polyester Film
  • Rayven-Lab testing