bioplasticsMAGAZINE_0906

Films | Flexibles | Bags
Tear Rresistance
Modulus of
Elasticity
Puncture
Resistance
Elongation
at Break
Seal Strengh
Tear strength
— PE
— Bio 1. generation
— Bio 2. generation
Fig. 1 Comparison of mechanical properties
these temperatures are a must in order to achieve approval. Low glasstransition
temperature as well as homogeneous material and distribution
of synergetic additives are the keys to meeting these requirements.
Dettmer Verpackungen (Delo) in Lohne, Germany, uses Bio-Flex
F 2110 as a basis for a multilayer system for deep-freeze packaging.
A packaging film has been developed for the market leader in deep
frozen potato products that meets the many and various requirements.
McCain´s philosophy behind this concept is coherent: ‘100 % Bio – inside
and outside’. McCain´s Bio Harvest products derive from certified,
ecologically controlled cultivation. To emphasize this, packaging
made from renewable resources was needed - which also had to be
biodegradable. The biodegradation, including the inks, has been tested
and certified according to EN 13432. High quality printing with up to
10 colours is possible and the packaging carries the well-established
seedling logo. But, what about the mechanical properties?
Astonishing results were achieved when the biofilm was compared
with polyethylene of the same thickness. Delo, as market leader in
deep-freeze packaging, with 13 blown film units, is known for its highly
demanding performance. Delo coextrudes up to seven layers and prints
on 12 flexo print lines, five of which are equipped with 10 colour decks.
The latest generation of biofilms from Delo´s director of development
contains up to 70 % renewable resources, without any compromise.
Fig. 1 shows clearly that by means of Bio-Flex a leap into new dimensions
of mechanical properties of thin packaging films has been achieved.
There is currently no technical obstacle to a broad market launch.
Delo have even managed to offer solutions that have so far not been
possible with PE. Excellent puncture resistance or rigidity previously
only achievable in multilayer systems, open up completely new scopes
for design. High quality raw materials and compounds such as Bio-
Flex today allow for a broad variety off coextruded films as ‘customized
products‘.
[1] www.lebensmittellexikon.de
www.fkur.com
www.de-lo.de
bioplastics MAGAZINE [06/09] Vol. 4 13