Aerosol Cans are
usually made from Tin plate or Aluminium.
Tinplate aerosol cans are mostly made up of 3 components - a top
containing the Valve opening, a body & a bottom. Some two-piece cans
are also now available. Aluminium cans are made from single piece of
Aluminium metal.
Aerosol Containers must be capable of withstanding the internal
pressures generated during filling, and the subsequent transport,
warehousing, and usage in the consumer's hands. They must also safely
contain the product through out the life of the aerosol.
Aerosols are pressurized systems, and as such they are governed by
legislation. This is not only covers the manufacture of the empty can,
but also its subsequent filling.
Legislation governs the amount of product that may be filled into
aerosol cans, and for Safety reasons there will always be some space
in the can, which does not contain Liquid. If you shake a 'full'
aerosol you will usually hear the liquid moving around, due to the
headspace in the can. Because an aerosol is under pressure there must
be sufficient space for the propellant to occupy, under all likely
conditions.
The main product market is deo market, which accounts for 50% of the
overall volume. In the two Strategic business areas - cosmetics and
pharmaceutical - aluminium aerosol cans are performing Very well,
which is also due to the excellent functional advantages of this
material. Owing to the extraordinary barrier properties of aluminium,
an optimal protection of the product is guaranteed.
In this context special mention should be made of the protection it
offers against light, moisture, hydrogen and oxygen. An additional
advantage is the fact that fugitive substances contained in the
contents the filling cannot escape. Especially for the cosmetics and
the pharmaceutical industry these packaging properties are
indispensable for maintaining product quality. The seamlessness of the
aluminium aerosol can, which is achieved thanks to the monobloc
technology, guarantees a high safety standard during transport and
storage. This has positive effects of the distribution of the cans
along the entire logistic chain. The formability of metal and thus the
variety of shaping possibilities enhances the appeal of aluminium
aerosol cans. It ensures an image-building and marketing-minded
implementation of the shaped can idea and prompts quick reactions to
changing market trends.
The can bodies can be imaginatively designed and fitted with various
shoulders (round, domed, angled, stepped and ogive formed.) Thanks to
their seamlessness aluminium cans offer excellent printing properties,
which guarantee promotional and aesthetic added value.
The quality of the printing is a decisive factor in determining the
consumer's decision at the point of sale. In addition, aluminium is
corrosion resistant so that, for example, unsightly spots of rust in
bathrooms are avoided.
These convincing functional advantages have induced renowned cosmetics
producers to stick to aluminium cans or even to substitute other
materials with aluminium.