Film packaging strip

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The primary component of a blister pack is a cavity or pocket made from a formable web, usually a thermoformed plastic. In case of difficult shapes, the warm film will be physically pushed down partially into the cavity by a "plug-assist" feature. The plastic shell is vacuum-formed around a mold so it can contain the item snugly. We use cookies to ensure that we give you the best experience on our website. Plug-assist results in a blister cavity with more uniform wall distribution and is typically used when the cavity size and shape is larger than a small tablets and capsules. Opaque blisters also protect light-sensitive products against UV rays. The principal advantages of PVC are the low cost and the ease of thermoforming.

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Cyclic olefin resins are generally amorphous and are noted for good thermoforming characteristics even in deep cavities, leading some to use COC in blister packaging as a thermoforming enhancer, particularly in combination with semicrystalline resins such as PP or PE.

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Film Strip packing tape

The PVC side is on the inside in contact with the product. There is a wide range of colors and finishes that blister packaging can be constructed to feature. Such equipment is called a blisterline. WVTR values of commercial cyclic olefin-based pharmaceutical blister films typically range from 0. Many blister packaging machines use heat and pressure via a die to form the cavity or pocket from a roll or sheet of plastic.

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