Aluminium jumbo roll
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without oil,stain and vestige
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Cover material made of hard aluminium
Push-through blister with Aluminum foil
If the drug is to be taken, it can simply be pushed through the hard aluminium. The hardness of the film facilitates the so-called push-through opening.
Normally only the outer side of the aluminium foil, which is directly visible to the customer, is provided with printing. But also, the inside sealed with the heat seal lacquer could be printed.
In this inner side, it is obligatory to have a double coating with a heat seal primer and the heat seal lacquer applied thereon. The primer ensures that the heat seal lacquer adheres securely to the aluminium foil and is matched to the aluminium foil.
The primer can also be dyed. The reasons for this are mainly for marketing, and not to protect, even better, the drugs. The primer coat is followed by the heat seal lacquer. If the primer is dyed, the heat sealant protects the medicament against the color pigments in the primer – the colour pigments are enclosed between the aluminium foil and the heat sealant lacquer.
The colour pigments, the primer and the heat seal lacquer have to be well matched.
Cover material made of soft aluminium
Of the packed medicament in form of capsules or tablets should be particularly safe from unauthorized opening by children’s hands, it is a good idea to close the blister packs with soft aluminium foil.
The same applies to soft aluminium foil as with hard aluminium foil. However, the thickness and flexibility of the aluminium foil makes it difficult for children to push the tablets through the soft aluminium foil. The aluminium foil is extra perforated at the sealing seams so that it can’t be completely removed from the blister film.
Blister film made of a composite of aluminium with paper / PET
Another possibility to pack tablets and capsules
In the pharmaceutical industry, composite films of aluminium and paper and / or PET are used as cover films. A paper with a weight of 40-50 g / m² is laminated with aluminium foil. Cover foils with aluminium and paper can be printed directly on the outward-facing surface of the paper.