The coefficient of friction is a physical quantity that characterizes the slipperiness of packaging materials. It is divided into two types: dynamic friction coefficient and static friction coefficient. It is an important testing index for packaging materials. The friction coefficient is directly related to the smooth progress of the packaging process.
Common pharmaceutical packaging quality problems monitoring solution
Monitoring proposal for rupture of non-PVC composite membrane infusion bag. The reason for the rupture of the PVC composite membrane infusion bag and its monitoring plan provide a reference for the pharmaceutical industry.
Testing method for peeling strength of aluminum-plated composite film for pharmaceutical packaging
If the carton for the transportation of pharmaceutical products has poor compression resistance, the carton will be easily deformed or even crushed due to external forces such as squeezing and stacking during the transportation process, resulting in the loss of the protective effect of the carton on the medical product. . Therefore, strengthening the monitoring of the compression resistance of cartons is an effective way to prevent the loss of medical products during transportation.
Under low temperature conditions, polymer flexible packaging materials have a tendency to increase brittleness, and brittleness is easy to occur.The flexibility and impact resistance of the material deteriorate at low temperatures, resulting in inability to withstand external impacts, causing damage such as bag breakage and air leakage.
For the latter, the shrinkage rate and contraction force of the cigarette film are required to be relatively large, so as to maintain the smooth, uniform and compact packaging effect of the cigarette for a long time. Therefore, strengthening the detection of the shrinkage performance of the cigarette film to ensure the suitability and uniformity of the shrinkage performance has far-reaching significance for improving the appearance and quality of cigarettes.
Proper shrinkage properties are important to the shrink packaging for bottled drinks and it is necessary for the manufacturers to test the shrinkage properties of the shrink films before use. This article provides a test method of the shrinkage properties of shrink film for your reference.
The screen protective film is usually pasted on the screens of electronic products such as mobile phones and computers. Its function is to protect the screen from water and dust, while preventing fingerprints from remaining on the screen. Its materials usually include PP, PVC, PET and AR. The test indicators for the adhesiveness of the screen protection film include primary adhesive strength, last adhesive strength, peel strength, etc. There are no relevant standards for the protection film in China. This article refers to GB/T 2792-2014 "Test Method for Peeling Strength of Adhesive Tapes". Adhesive testing of screen protectors.
Proposals to common quality problems of aluminum lamination packaging
Packaging sealing performance refers to the characteristics of the package to prevent other substances from entering or the contents from escaping. If the packaging is poorly sealed, it is easy to cause air leakage, liquid leakage, or damage to the packaging during long-term circulation and storage after leaving the factory.
The appearance reduces the grade of the product, and at the same time, it is easy to cause deterioration of the barrier properties, puncture resistance, impact resistance and other physical and mechanical properties of packaging materials, which in turn leads to a series of problems such as oxidation deterioration, deliquesce, and bag breakage. Therefore, it is particularly important to strengthen the detection of the influence of the ink on the composite fastness of the composite film.
