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Your material supplier will be able to advise on the optimum combination, but as a general rule of thumb, any lidding foil that is compatible with PVC wont be a match with PET. [5] Care must be used to safely open some of these packages, as opening it without care can result in injury; 6,000 Americans are sent to the emergency room each year by injuries suffered in opening such packages. If a high surface finish is required, knurl forming is the way to go. One disadvantage of platen sealing is that it can cause air to be trapped in the blister pockets. It can be used as a security package to deter package pilferage for small high-value items, such as consumer electronics. A lot of dirt, grime and residue from materials can sediment along the linings of the sealing tools. Maximising the seal area. PVDC coated blister films are the most common and prevailing barrier films used for pharmaceutical blister packs. For best results, you may want to vary the type of knurl depending on the type of lidding you run. The standard knurl wheel has a sharp corner on the leading edge which makes the wheel ideal for heavy loading. Blister packaging is a cost-effective way of showcasing a product. Whilst this doesnt affect seal integrity, it does compromise pack aesthetics. 0000005527 00000 n Founded in 1980, Sepha has established a global reputation for innovation and development of specialised, high-quality equipment for use in the manufacture of pharmaceutical blister packs, parenterals, medical devices and healthcare products. Trapped blister packaging. Most pharmaceutical companies around the world rely on blister packs to guarantee theuniformity, purity, integrity, safety and stability of their products. hbbd``b`A = (# Teeth [part] / # Teeth [die]) x (Knurl Dia. It should be able to resist overt temperatures, heavy pressure and longer dwell times so that the material inside the packaging has lower chances of getting affected by these factors. One of the key pack design principles for ensuring a strong seal is to create the maximum seal area. 0000022333 00000 n On a wider web, use a slightly larger knurl to allow some places for the entrapped air to go. Try to limit the pattern to only about 90% full, Increase the feed rate in the 1st revolution. Cut Knurlers are used for holding knurl wheels to cut a pattern or gripping surface on medium- to large-sized workpieces. They commonly have a 30 left hand helix angle. 0000038106 00000 n Choose the Right Blister Packaging for Your Business - Bizongo Ideal for more difficult operations. Skin packaging really behaves like skin as it covers the product. In this configuration, the blister extends to the full size of the card as in the full face seal blister, but instead of being sealed to the card, it has flanges that wrap around the card. Bump Knurlers are used for holding knurl wheels to form a pattern or gripping surface on small- to medium-sized workpieces. + C.F.*). Knurl cutting is the process of removing enough material from the workpiece to actually reduce the diameter. Save my name, email, and website in this browser for the next time I comment. Removing waste material from the sealing rollers, constantly polishing the blister patterns and knowing when to call for part change can bring efficiency all around. But identifying the correct sealing parameters is only part of the sealing equation; the other challenge is ensuring that force is evenly distributed across the sealing surface. The Right Type of Blister Packaging for Your Product.