How to Test the Transmittance and Thickness of the Courier Bag?

  Recently,a Malaysian customer inquired about the instrument used to test the transmittance and thickness of the courier bag. The article will introduce how to test the light transmittance and thickness of the courier bag.

1.How to test the visible light transmittance of the courier bag?

  The express usually get lost and the customer experience was very bad.Therefore,the courier bag generally has a very low light transmittance.The goods can’t be seen from the outside. Many courier bags have a milky white color.If we use conventional regular transmission light transmittance meter to test courier bags,problems such as insufficient resolution and inaccurate testing may occur.The light transmittance meter that adopt diffuse transmission principle can be used. The Linshang LS117 light transmittance meteris an instrument specially designed to test the transmittance of special materials such as opalescent,frosted and fog.At present,many users have purchased the Linshang LS117 light transmittance meter to test the light transmittance of the courier bag.The figure below shows the light transmittance data of the SF express bag tested by the Linshang LS117 light transmittance meter.

2.How to test the thickness of the courier bag?

 Regarding the thickness test of the courier bag,we can use the vernier caliper.But since the courier bag is soft, the vernier caliper test force is difficult to control.The most convenient and quick way is to test the bag with a paint thickness gauge.Let's take the Linshang paint thickness gauge as an example to explain how to test the courier bag thickness? 

3. Linshang paint thickness gauge

The Linshang paint thickness gauge uses the Hall Effect and eddy current effect principle to professionally measure the metal surface coating thickness.It can be seen from the principle, if we need to test the courier bag thickness,it is necessary to use a metal material as the substrate.The specific test methods are as follows:

1. Use the metal zero adjustment plate equipped with the Linshang paint thickness gauge as the substrate. The data is 0 when the instrument is testing a metal substrate.

2. Place the courier bag flat on the metal substrate and press the instrument vertically on the courier bag, the courier bag thickness will be displayed immediately.

As shown in the above figure,the thickness of this courier bag tested by the Linshang paint thickness gaugeLS220H is 41.8μm.Testing the thickness of the courier bag with a paint thickness gauge is a non-destructive and convenient test method.The test accuracy is very high, which is a micron-scale unit.
     We believe that from the above test cases,you can clearly understand how to test the light transmittance and thickness of the courier bag.For the above-mentioned light transmittance meter and paint thickness gauge,the measurement accuracy is in line with national standards, ensuring that it can pass the inspection of Chinese National Metrology Institute.If you have test requirements,Linshang engineer can provide users with free sample testing services. Welcome to consult!