Commonly use transparent films are optical films, composite films, polyester films, plastic films. How to test the transparent film gloss with a gloss metre is also a problem that users often mention. Because the gloss metre uses the principle of light source reflection to measure the material surface. When measuring the gloss of the transparent film, different colors of the material under the film will have different readings. How to test the transparent film gloss accurately?
In theory, accurately measuring the gloss of a transparent film requires placing a material with a gloss of 0 under the transparent film. Because any shiny material will affect the gloss measurement of the transparent film. What kind of material is not glossy? Generally, it is a black matte material, such as black flannel, black matte material. Take the Linshang LS191 gloss metre as an example to test the gloss of a transparent film.
First, a piece of material with a gloss of 0 is required to be placed under the transparent film. We found a piece of black flannel whose gloss is 0 tested by LS191 gloss metre.
Then, the transparent film was placed on the black flannel and then place the LS191 gloss metre on the transparent film. The transparency of this transparent film was measured to be 159.3 GU.
This is the test method for the gloss of transparent films. There are a few points to note during the test:
1. A piece of material with a gloss of 0 must be placed under the transparent film.
2. The test area of the transparent film must be larger than the test hole of the gloss metre.
3. Make sure the gloss metre is placed close to the transparent film surface.
The above is the specific method of how to use the gloss metre to test the gloss. We hope the above can help you.