With the development of economy and technology, the development of China's packaging industry is obvious to all. The pharmaceutical packaging materials used for special commodities are also completely replaced, and pharmaceutical packaging has become the focus of attention along with the development of the pharmaceutical industry. Next let's compare the performance of PET with PVC.
Table 1
Item PVC sheet PET sheet Mechanical strength is better than PVC Strong transparency Transparent, yellowish transparent Colorless toxicity Non-toxic formula meets requirements Non-toxic breathability, oxygen 520 4.8, 9
Water adaptability 2-5 1.8-3
Water absorption 0.4% 0.3%
Resistant to bacteria with additives
Table 2 Comparison of physical properties
Project light-transmitting, cold-resistant rigidity, thickness under the same strength
PVC 78-82 General General 0.20
PET 90 good 0.187
BOPS 90-92 Youyou 0.18
From Table 1 and Table 2, it can be seen that PET is superior to PVC in terms of mechanical strength, transparency, gas barrier property, water resistance, bacteria resistance, and cold resistance as a sheet for pharmaceutical packaging, and has water absorption and toxicity. Also less than PVC, so PET as a heat-sealing sheet is safer than PVC, better barrier properties, and is conducive to the preservation of drugs.