Functional Barriers and Adsorbers Which concept fits best?

Transkript

1 Professur für Lebensmittelkunde und Bedarfsgegenstände Functional Barriers and Adsorbers Which concept fits best? T.J. Simat*, M. Lommatzsch,, L. Richter, TU Dresden M. Biedermann, K. Grob, KLZH * thomas.simat@tu-dresden.de Tel Institut Kichhoff Berlin Mineralölbestandteile in Lebensmitteln und Kosmetika Berlin,

2 BMELV Project - Functional Barrier Study on defined Foods and Conditions (2010) MOSH Migration into oat flakes and Inner Bag Materials months storage 2

3 Re-Evaluation of Packed Food from the BMELV Project Food Sample Investigation 31 of these food samples were chosen for a reinvestigation 2013 In 2010 these samples were high in MOSH (> 4 mg/kg) and MOAH (> 1 mg/kg) only the composition of the packaging has been investigated but not the contamination of the food 3

4 Packaging for Dry Food 2010 vs 2013 Carton Board trend to use virgin fiber cartons number recycled fiber fresh fiber recycled fiber fresh fiber

5 Packaging for Dry Food 2010 vs 2013 Cereals and Mueslis in 2010: 10 samples: recycled fiber inner bag: 20 µm PE/ 22 µm PE/ 7µm Ionomer in 2013: 8 samples: recycled fiber inner bag: 16µm PE/15µm PE/6µm EVA/12µm PES or PE/PE/EVOH/PE/Ionomer Use of inner pouches with functional barrier 2 samples: virgin fiber 15µmPE/20µm PE/6µm Ionomer 5

6 Professur für Lebensmittelkunde und Bedarfsgegenstände Test Methods for Functional Barriers

7 Functional Barrier Measuring Effectiveness of Barrier Properties Barrier Test Fraunhofer IVV Approach (Welle, 2016) 7

8 Functional Barrier Measuring Effectiveness of Barrier Properties Barrier Screening - Test (BASF, 2011) 8

9 Functional Barrier Measuring Effectiveness of Barrier Properties Barrier Test SVI/KLZ Approach 9

10 Functional Barrier Measuring Effectiveness of Barrier Properties Barrier Test SVI/KLZ Approach 10

11 Functional Barrier Measuring Effectiveness of Barrier Properties General disadvantages of these tests estimation for long time storage may be have a relatively high uncertainty only 2-dimensional: leaks from closure system effects of bending flaps, cutting edges, grooves may be relevant occasional defects in the barrier may be overseen 11

12 Professur für Lebensmittelkunde und Bedarfsgegenstände Functional Barriers

13 Functional Barrier 13

14 Measures to prevent MOH contamination from packaging Virgin fiber box with and without inner pouch Recycled fiber box inner pouch with barrier PES, PA, EVOH, (PP) Lacquered films films with nano barrier layer (Al, SiO 2,.) Inside barrier on the box Printed coating Extrusion coating Dispersion coating laminated with plastic film Box with adsorbent M. Tönnießen, Henkel KGaA 14

15 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box - Inner pouch with barrier Functional film Inner PET layer 15

16 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box - Inner pouch with barrier Functional film Inner EVOH layer (riceflakes) 16

17 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box - Inner pouch with barrier Functional film sealable polyester (choco chips) 17

18 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box - Inner pouch with barrier Functional lacquer PVDC lacquer (organic muesli) 18

19 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box - Inner pouch with barrier Paper bag with barrier coating 19

20 Measures to prevent MOH contamination from packaging Virgin fiber box with and without inner pouch Recycled fiber box inner pouch with barrier PES, PA, EVOH, (PP) Lacquered films films with nano barrier layer (Al, SiO 2,.) Inside barrier on the box Printed coating Extrusion coating Dispersion coating laminated with plastic film Box with adsorbent M. Tönnießen, Henkel KGaA 20

21 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box Inside coating Printed coating Extrusion coating Dispersion coating PE copo EVA PES outside board fibers 21

22 Measures to prevent MOH contamination from packaging - Examples Recycled fiber box Box with adsorbent Carton board with activated carbon in mid layer (CatcherBoard) Exemplary scheme Smurfit Kappa WO 2012/ A1 22

23 Measures to prevent MOH contamination from packaging Examples Inner coatings and Adsorbents Advantages Direct filling in the box may fit to the existing packaging line Barrier against contamination from transport carton and printing inks / Barrier for transport carton Disadvantages (only barrier coatings) Loss of barrier properties by + cutting edges + bending of flaps + Grooves Altered hot sealing properties 23

24 Project (TU Dresden, KLZH, Food Producer) Compliant folding box for a breakfast cereal T.J. Simat, Institut Kirchhoff - Mineralölbestandteile in Lebensmitteln und Kosmetika - Berlin

25 Project Packed Food: breakfast cereal About 500g cereal packed in 8 dm² of cardboard packaging 16 dm 2 /kg food shelf life: 12 months, room temperature Aim Finding a recycled fiber barrier box compliant to future mineral oil regulation limits inert sensory properties towards the packed cereal Procedure Accelerated test for barrier properties 12 months storage test Sales packaging in transport carton wrapped with aluminium foil Sampling after 1, 3, 6, 9, 12 month(s) storage 25

26 Project Packed Food: breakfast cereal About 500g cereal packed in 8 dm² of cardboard packaging 16 dm 2 /kg food 20 boxes in a corrugated board transport carton wrapped in aluminium foil, gaps after sampling 26

27 Project Characterisation of the materials Cardboard box types: Abbr. construction Barrier application RB Recycled fiber board - HB Hybrid board (rec. and virgin fiber) - VB Virgin fiber board - RB/PAc Rec. Board/6-8µm polyacrylate flexo printing coating RB/PES Rec. Board/5µmPE/4µmEVA/7µmPES Extrusion coating HB/PVA Hybrid Board/5µmPVA coating RB/AC Rec. Board (activated carbon)/2µm PVA AC layer, coating Disclaimer - presented results only refer to the materials prepared for this storage test - some barrier systems may provide better properties when prepared differently 27

28 Project Sensory evaluation Results: Determination according to EN Tendency of lower odour emission of the board with activated carbon VB RB RB HB RB/PAc RB/PAc RB/PES HB RB/AC 2h 40 C /PVOH 28

29 Project Initial amounts of MOSH/MOAH Results MOSH C16-24 MOAH C24 Concentration in mg/kg RB/PAc RB/PES HB/PVA HB VB RB Transportbox Limit MOSH Limit MOAH 29