Guide regarding packaging produced using the co-extrusion blow molding process
GUIDE_
regarding packaging produced
using
the co-extrusion blow
molding process
Which products use COEX
packaging?
Chemical products
with a high
permeation rate
Paints, varnishes,
and solvents
Oxygen-sensitive
media
flavours
Plant protection products
Fuels and
heating oil
additives
Special products need special protection!
Our CoEx
containers
protect your
goods.
To protect the
environment, your
goods
remain
safely in our CoEx
containers.
The
basic
structure
Barrier layer
Bonding agent
New material and/or regranulate
It's the
barrier layer
that counts!
The material of the barrier layer consists of
PA (polyamide)
or EVOH (ethylene vinyl alcohol copolymer)
It's the
barrier layer
that counts.
PA (Polyamide)
CO2, N2 and solvents
remain in the product.
Oxygen remains outside
the packaging.
It's the
barrier layer
that counts.
PA (Polyamide)
Extremely resistant to breakage or crack propagation at low temperatures
Heat resistant
High strength and rigidity
Prolongs the effect of the product
Suitable for:
plant protection products
solvent-based chemicals
highly corrosive chemicals
It's the
barrier layer
that counts.
EVOH (Ethylen-
Vinylalkohol-
Copolymer)
remain in the product.
outside the packaging.
It's the
barrier layer
that counts.
EVOH (Ethylen-
Vinylalkohol-
Copolymer)
Particularly good oxygen barrier
Particularly good water vapour barrier
Flavours
highly volatile
contents
food
industry
health
industry
chemical
industry
crop protection
industry
Suitable for:
layers
In the four-layer structure, the purpose of the decorative layer is to increase the mechanical strength of the packaging. The drop fracture resistance is increased.
Barrier layer (material: PA or EVOH)
Bonding agent
New material and/or regranulate
Decorative layer (HDPE)
layers
In the six-layer structure, the purpose of the additional inner layer is to protect the barrier against aggressive media.
Inner layer (HDPE)
Bonding agent
Barrier layer
(material: PA or EVOH)
Bonding agent
New material and/or regranulate
Decorative layer (HDPE)
CO2/N2
Solvents
O2
CO2/N2
odors
flavours
O2