There are many kinds of raw materials that can be used for blister packaging , they are widely used. Among them, the more common plastic blister packaging raw materials are: PP / PET / PVC / PETG /PS /PC . In practical applications, it is necessary to select suitable raw materials according to the requirements of the products.Below are some difference of these materials: PVC: The PVC plastic sheet has excellent mechanical strength, light weight and stable chemical properties.
Generally it's used for Blister Tray.
PET: PET plastic sheet is a colorless and transparent plastic material with good crystallinity and toughness. It has the appearance of glass, odorless, tasteless, non-toxic, easy to burn, and has good air tightness. The Blister Packaging products made of PET have good mechanical strength. PC: PC is colorless and transparent, smooth and beautiful plastic. Because PC is non-toxic and odorless, it has good UV penetration resistance, moisture-proof and fragrance-preserving properties, wide temperature resistance range, no brittleness at -180 °C, and long-term use at 130 °C, so it is an ideal food. Packaging Materials. Using the characteristics of PC's good impact resistance and easy molding, it can be manufactured into bottles, cans and containers of various forms for packaging beverages, alcohol, milk and other fluid substances. The biggest disadvantage of polycarbonate (PC) is stress cracking. In addition to the selection of high-purity raw materials and strict control of various processing conditions, the use of resins with low internal stress, such as a small amount of polyolefin, nylon, polyester, etc. melt blending, can significantly improve stress cracking resistance and water resistance. PP: PP plastic raw material has high crystal structure, high transparency, smooth surface and good processing performance.
