Source: Link Testing Instruments Co., Ltd
Flexible plastic composite film is one very common packaging material, which is widely used in medical packaging for medicines in powder, granules and liquid forms.
The coefficient of friction is one key factor that may influence the packing process of medicines. To be specific, if the kinetic coefficient of friction of the packaging material is too high, much more resistance may be produced during the pulling process and as a result, the packaging material may be deformed and even get fractured. In contrast, if the static coefficient of friction of the packaging material is too low, in pulling process the packaging material may slip off. For the finished package, if the coefficient between the inner surfaces of the package is too high, it may be difficult to open the package.
Therefore, it is necessary to test the coefficient of friction of the packaging materials before use to guarantee the packaging materials can be used conveniently in packing process.
This article provides a simplified test method of coefficient of friction of flexible plastic composite film for medical use for your reference. The testing instrument is Link Testing’s LTMXS-06 Coefficient of Friction Tester. The test specimens are aluminized plastic composite film used for one powder form medicine.
Figure 1. Common Flexible Package for Medical Use
Coefficient of friction of one specimen refers to the coefficient of friction between this specimen and one friction pair material. In the tests mentioned in this article, we tested the static and kinetic coefficient of friction of the outer surface of the test specimen against the steel plate.
Figure 2. LTMXS-06 Coefficient of Friction Tester
The tests shall be performed according to the following procedures.
For more details about LTMXS-06 Coefficient of Friction Tester, please visit www.linktesting.org
About Link Testing Instruments Co., Ltd:
Link Testing Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China.