Breakthrough In Biodegradable Cosmetics Packaging
RPC Cresstale has successfully completed the first trial production
of a 100% biodegradable lipstick. The development - which follows the
moulding of a compact using the same polymer - represents a significant
breakthrough in cosmetics packaging.
The pack was produced using PHA, a polymer produced from organic
sugars and oils that breaks down in soil, composting, waste treatment
processes, river water and marine environments. The only products
generated during decomposition are carbon dioxide and water; since
these are the materials required used to make the material, the life
cycle is effectively a closed loop.
PHA, while behaving essentially like fossil fuel based polymers when
moulded, has a smaller manufacturing 'window.' The resulting mouldings
have, to date, proved to be far more heat stable than the more familiar
biodegradable PLA polymer, proving PHA's suitability to the cosmetics
The lipstick uses the RPC patented 'Revolve' mechanism, which boasts
a unique collapsible tower. This allows the lipstick, including the
decorative cover and base, to be made in only four moulded parts and
from one single material, instead of the conventional five components
requiring a number of different materials.
Work began on the lipstick following the successful moulding of a complete screw-top cosmetic powder compact.
"A high degree of moulding expertise was needed to overcome the
previously unknown problems presented when moulding this innovative new
material," comments John Birkett, Project Manager at RPC Cresstale.
"The successful application of PHA indicates that fully biodegradable
cosmetics packaging can be a reality."