15 1 Andreas Roos Does your package meet the shelf life ......6 11 Andreas Roos, AMETEK GmbH -Does...

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1 Andreas Roos, AMETEK GmbH - Does your package meet the shelf life requirements your packaging material promises? 17th TAPPI European PLACE Conf. 2019 Porto - Session 15 - Paper 1

Does your package meet the shelf life requirements your packaging material promises?

Presented by:

Andreas RoosHead of Sales

AMETEK GmbH

16TH TAPPI EUROPEAN PLACE CONFERENCE


Optimal package design

Why do you need a barrier?

Case 1: Liquid Packaging Board

Case 2: Potato Chips

Conclusions

Structure

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Optimal Package Design

Source: MOCON Tech Bulletin: PERMEATION AND IST IMPACT ON PACKAGING



ProductTypical product shelf

life

(in months)

Max. O2

Tolerance (1)

[mg O2 / kg of product]

Beer 6 … 12 0.5 ... 1

UHT Milk 2 … 5 1 ... 8

Nuts, Snacks, Chips

3 ... 12 15 ... 75

Baby Food 3 ... 12 … 36 15

Coffee (Instant orGround)

12 ... 18 20

Source: „Applying Permeation Data for Understanding Product Shelf Life“; Fraunhofer IVV, Esra Kücükpinar

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Oxyg

en Tr

ansm

issi

on ra

te

cc/(

m2 ·d

ay·b

ar)

Oxyg

en Tr

ansm

issi

on ra

te

cc/(

m2 ·d

ay·b

ar)

% Relative HumidityTemperature (°C)


Case 1: Liquid Packaging Board

From the Supermarket

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Case 1: Liquid Packaging Board- Measuring flat material

Flush Gas In

Flush Gas Out

Test Gas In

Test Gas Out

Carrier Gas In

Carrier Gas + Test Gas

Out to sensor


Case 1: Liquid Packaging Board- Measuring flat material / Test Results

Parameters:‐ Temperature Test Cell 23 °C‐ Relative Humidity Oxygen 50 %‐ Relative Humidity Carrier Gas 50 %

Test Results at 100 % Oxygen:

‐ Cell A: 0.002 cm³ / (m² ∙ day ∙ bar)‐ Cell B: 0.004 cm³ / (m² ∙ day ∙ bar)

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Case 1: Liquid Packaging Board- Measuring package


Case 1: Liquid Packaging Board- Measuring package / Sample preparation

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Case 1: Liquid Packaging Board- Measuring package / Sample preparation


Case 1: Liquid Packaging Board- Measuring package / Test results

Parameters:‐ Temperature Test Chamber 23 °C‐ Relative Humidity Oxygen 50 %‐ Relative Humidity Carrier Gas 50 %

Test Results at 20.9 % Oxygen:

‐ Cell A: 0.0124 cm³ / (package ∙ day)‐ Cell B: 0.0105 cm³ / (package ∙ day)‐ Cell C: 0.0140 cm³ / (package ∙ day)‐ Cell D: 0.0346 cm³ / (package ∙ day)

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Case 1: Liquid Packaging Board- Measuring package / Test results


Case 1: Liquid Packaging Board- Test results / Comparison

Test Results Flat Material at 100 % Oxygen:


Test Results Package at 20.9 % Oxygen:


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Test Results Flat Material at 20.9 % Oxygen:

‐ Cell A: 0.00042 cm³ / (m² ∙ day)‐ Cell B: 0.00084 cm³ / (m² ∙ day)





Test Results Flat Material at 20.9 % Oxygen, converted to a surface area of 774 cm²:

‐ Cell A: 3.24 x 10‐5 cm³ / (package ∙ day)‐ Cell B: 6.49 x 10‐5 cm³ / (package ∙ day)

Test Results Package at 20.9% Oxygen:


Factor 300‐500!

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Case 1: Liquid Packaging Board- Possible reasons for difference



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Case 2: Potato Chips Pouch

From the supermarket


Case 2: Potato Chips - Measuring flat material

Top of Cell

Bottom of Cell

Flush Gas In Flush Gas Out

Test Gas In Test Gas Out

Carrier Gas InCarrier Gas + Test Gas

Out to Sensor

Film test sample

O‐rings

Flush channel

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Case 2: Potato Chips- Measuring flat material

Parameters:‐ Temperature Test Cell 23 °C‐ Relative Humidity Oxygen 50 %‐ Relative Humidity Carrier Gas 50 %

Test Results at 100 % Oxygen:



Case 2: Potato Chips- Measuring packages / sample preparation

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Case 2: Potato Chips- Measuring packages / sample preparation


Case 2: Potato Chips- Measuring packages

Parameters:‐ Temperature Test Chamber 23 °C‐ Relative Humidity Oxygen 50 %‐ Relative Humidity Carrier Gas 50 %

Test Results at 20.9 % Oxygen:

‐ Cell A: 0,3163 cm³ / (m² ∙ day)‐ Cell B: 0,2731 cm³ / (m² ∙ day)

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Case 2: Potato Chips- Test results comparison

Test Results Flat Material at 20.9 % Oxygen, converted to a surface area of 437 cm²:

‐ Cell A: 0.215 cm³ / (package ∙ day)‐ Cell B: 0.217 cm³ / (package ∙ day)


‐ Cell A: 0,3163 cm³ / (package ∙ day)‐ Cell B: 0,2737 cm³ / (package ∙ day)

26 – 46 % higher


Case 2: Potato Chips- Shelf life

‐ Quantity: 30 g‐ Package Surface Area 437 cm²‐ Oxygen tolerance (assumption) 75 mg/kg of product

M = 0.03 kg x 75 mg/kg = 2.25 mg approx. 1.58 cm³ (at STP)

For a shelf life of 6 months:

V = 1.58 cm³ / 182 days = 0.0087 cm³/(package ∙ day)

Barrier of the packaging film (21 % Oxygen): 2 cm³/(m² ∙ day)

Barrier of the packaging film (100 % Oxygen): 10 cm³/(m² ∙ day)

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Conclusions

The barrier property of flat packaging material is only one factor to create a “perfect” package to reach required product shelf life

Production of the package might influence the barrier a lot

It is always worth to have a closer look into the barrier property of the complete package

There is not one standard measurement for packages, but there are possibilities to reach a higher reproducibility and reliability

Flat material shows the barrier performance of the packaging material at its best, but during packaging, materials are not always handled in the best possible way


“Thank You” for your patience

Presented by:

Andreas RoosAMETEK GmbH, [email protected]

15 1 Andreas Roos Does your package meet the shelf life ......6 11 Andreas Roos, AMETEK GmbH -Does...

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