Calculator Introduction Requirements Design The calculator control ...
Oxygen transmission rate web based calculator
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NORNER is an independent innovation and technology centre with leading expertise in plastics and packaging including functional properties and material science OTR/WVTR Simulator Our web based calculator for barrier properties is an example of what our organisation can achieve due to their high competence. The barrier calculator has become a popular tool among professionals in the packaging industry. The simulation model estimates the OTR or WVTR of packages by most plastics material like PE, PP, PET, PA and EVOH. Barrier properties of co-injection or co- extrusion multilayer and in-mould- label solutions can be studied and evaluated for cups, bottles, films and square containers. The flexibility of geometrical options, permeability properties and environmental conditions provides a useful tool for the design, development and application of plastic packaging. Scientific Laboratory We analyse Oxygen Transmission Rate (OTR) according to the principle of Ambient Oxygen Ingress Rate (AOIR). This technique is reliable and fast and especially suited for analysis of any shape of packaging, sheets and films. The benefits of AOIR Flexible analysis capability for • any shape of packs and films Speed of analysis • Good reliability • Lower cost • Additional services Development partner for new • packaging formats, systems or materials with laboratories. Funded research projects. • Scientific laboratory with wide • range of test capabilities. Analysis of material failures or • weaknesses in plastic parts, films and other materials. Prototype production. • NORNER OTR/WVTR Calculator Free Permeability OTR/WVTR calculations on www.norner.no Norner Confidence We strive to achieve a close cooperation with our customers in order to facilitate a good flow of information. Any information regarding the product, its production and use is vital for the investigations and conclusions we provide. In this way we have a high focus on meeting our customer needs. Our material expert team deliver conclusive reports where the documentation through high quality graphics has priority combined with other analytical information. Norners main business areas are: Polymer Producers, Consumables, Oil & Gas, Infrastructure, Chemicals, and Transportation. Norner is approved according to: ISO 9001:2008
description
Norner is an independent polymer institute with leading expertise in plastics and packaging including functional properties and material science.
Transcript of Oxygen transmission rate web based calculator
NORNER is an independent innovation and technology centre with leading expertise in plastics and packaging including functional properties and material science
OTR/WVTR Simulator
Our web based calculator for barrier properties is an example of what our organisation can achieve due to their high competence. The barrier calculator has become a popular tool among professionals in the packaging industry.
The simulation model estimates the OTR or WVTR of packages by most plastics material like PE, PP, PET, PA and EVOH. Barrier properties of co-injection or co-extrusion multilayer and in-mould-label solutions can be studied and evaluated for cups, bottles, films and square containers.
The flexibility of geometrical options, permeability properties and environmental conditions provides a useful tool for the design, development and application of plastic packaging.
Scientific Laboratory
We analyse Oxygen Transmission Rate (OTR) according to the principle of Ambient Oxygen Ingress Rate (AOIR). This technique is reliable and fast and especially suited for analysis of any shape of packaging, sheets and films.
The benefits of AOIRFlexible analysis capability for • any shape of packs and filmsSpeed of analysis• Good reliability • Lower cost •
Additional servicesDevelopment partner for new • packaging formats, systems or materials with laboratories.Funded research projects.• Scientific laboratory with wide • range of test capabilities.Analysis of material failures or • weaknesses in plastic parts, films and other materials.Prototype production.•
NORNER OTR/WVTR Calculator
Free Permeability OTR/WVTR calculations on www.norner.no
Norner Confidence
We strive to achieve a close cooperation with our customers in order to facilitate a good flow of information. Any information regarding the product, its production and use is vital for the investigations and conclusions we provide. In this way we have a high focus on meeting our customer needs.
Our material expert team deliver conclusive reports where the documentation through high quality graphics has priority combined with other analytical information.
Norners main business areas are: Polymer Producers, Consumables, Oil & Gas, Infrastructure, Chemicals, and Transportation.
Norner is approved according to: ISO 9001:2008
Norner ASAsdalstrand 291NO-3962 StathelleNorway
Tel +47 35578000Fax +47 35578124Web www.norner.noMail [email protected]
AssumptionsThe calculation models are developed under following assumptions:
Surface at the top of the containers, i.e. the lid or cap, is assumed to be impermeable and is not included in the calculations of OTR/WVTR.
The wall and layer thickness of the container, laminates or IML barrier film is assumed constant throughout article surface.
Calculations are based on an empty container.
For OTR, the oxygen level inside container is initially assumed to be 0 Vol %. The humidity can be varied as input parameter
Steady state condition of permeation. The amount of permeant passing through each layer is identical, and equal to the amount passing through the total structure. Diffusion takes place in one direction only.
The concentration distance relationship through the polymer is linear. The permeability coefficient is assumed to be a constant of the material and not dependent on sample thickness.
Calculation stepsThe first step is to choose the type of packaging container:
Cuboid Bottle Frustum Film/sheet
Define geometry parameters (e.g. length, radius, height)1. Choose materials (define layer materials and thickness)2. Define environmental conditions (temperature, humidity)3. Push calculate4. View and evaluate calculation results5.
PROJECT EXAMPLE - WVTR of a cereal packIf we compare the WVTR of two different films of 30µm each it is possible to simulate the total moisture ingress for a specific pouch size as a function of time as in below graph. This gives the packer information to estimate the shelf life of the cereal product.
01.03.20
16 NORNER OTR/WVTR Calculator at www.norner.no
http://www.norner.no/projects/packaging-institute/barrier-otr-and-wvtr-calculator
