More accurate method for grease barrier testing

Hille Rautkoski, Heli Nykänen, Asko Sneck

Research output: Contribution to conferenceConference PosterScientific

Abstract

Several standards for grease barrier testing of packaging materials are being used. These include TAPPI, ASTM and ISO standards. Results are expressed either as the time in which grease has penetrated through the structure or as the amount of grease which has penetrated through the test structure in certain time. The amount of penetrated grease is evaluated either visually or by measuring the diameter and calculating the area of the grease stain. Such tests are not accurate but provide mere approximations. There is thus a need for a more accurate and exact method. A method recently developed at VTT integrates two standard methods and combines visual data with a numerical result obtained by image analysis. Dyed oil or grease is applied automatically onto the test specimen having the test side upwards. A weight is placed onto each specimen. The whole test system is then transferred to the scanner. Scanning can be performed after pre-selected time intervals, and an image analysis script is used to analyse the area fraction of penetrated grease/oil. Both visual and numerical results are obtained after each time interval. Test temperature, test grease and test duration can be selected according to the end-use of the packaging material. Benefits of this test method include automated and operator independent application of test oil, pre-selected scanning intervals, more realistic test durations and temperatures approaching actual packaging applications, and availability of both visual and numerical data. In addition, there is no need to touch the test samples during the testing.
Original languageEnglish
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event26th IAPRI Symposium on Packaging - Espoo, Finland
Duration: 10 Jun 201313 Jun 2013

Conference

Conference26th IAPRI Symposium on Packaging
CountryFinland
CityEspoo
Period10/06/1313/06/13

Fingerprint

Lubricating greases
Testing
Packaging materials
Image analysis
Scanning
Packaging
Availability
Temperature
Oils

Keywords

  • grease barrier testing
  • packaging

Cite this

Rautkoski, H., Nykänen, H., & Sneck, A. (2013). More accurate method for grease barrier testing. Poster session presented at 26th IAPRI Symposium on Packaging, Espoo, Finland.
Rautkoski, Hille ; Nykänen, Heli ; Sneck, Asko. / More accurate method for grease barrier testing. Poster session presented at 26th IAPRI Symposium on Packaging, Espoo, Finland.
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Rautkoski, H, Nykänen, H & Sneck, A 2013, 'More accurate method for grease barrier testing' 26th IAPRI Symposium on Packaging, Espoo, Finland, 10/06/13 - 13/06/13, .

More accurate method for grease barrier testing. / Rautkoski, Hille; Nykänen, Heli; Sneck, Asko.

2013. Poster session presented at 26th IAPRI Symposium on Packaging, Espoo, Finland.

Research output: Contribution to conferenceConference PosterScientific

TY - CONF

T1 - More accurate method for grease barrier testing

AU - Rautkoski, Hille

AU - Nykänen, Heli

AU - Sneck, Asko

PY - 2013

Y1 - 2013

N2 - Several standards for grease barrier testing of packaging materials are being used. These include TAPPI, ASTM and ISO standards. Results are expressed either as the time in which grease has penetrated through the structure or as the amount of grease which has penetrated through the test structure in certain time. The amount of penetrated grease is evaluated either visually or by measuring the diameter and calculating the area of the grease stain. Such tests are not accurate but provide mere approximations. There is thus a need for a more accurate and exact method. A method recently developed at VTT integrates two standard methods and combines visual data with a numerical result obtained by image analysis. Dyed oil or grease is applied automatically onto the test specimen having the test side upwards. A weight is placed onto each specimen. The whole test system is then transferred to the scanner. Scanning can be performed after pre-selected time intervals, and an image analysis script is used to analyse the area fraction of penetrated grease/oil. Both visual and numerical results are obtained after each time interval. Test temperature, test grease and test duration can be selected according to the end-use of the packaging material. Benefits of this test method include automated and operator independent application of test oil, pre-selected scanning intervals, more realistic test durations and temperatures approaching actual packaging applications, and availability of both visual and numerical data. In addition, there is no need to touch the test samples during the testing.

AB - Several standards for grease barrier testing of packaging materials are being used. These include TAPPI, ASTM and ISO standards. Results are expressed either as the time in which grease has penetrated through the structure or as the amount of grease which has penetrated through the test structure in certain time. The amount of penetrated grease is evaluated either visually or by measuring the diameter and calculating the area of the grease stain. Such tests are not accurate but provide mere approximations. There is thus a need for a more accurate and exact method. A method recently developed at VTT integrates two standard methods and combines visual data with a numerical result obtained by image analysis. Dyed oil or grease is applied automatically onto the test specimen having the test side upwards. A weight is placed onto each specimen. The whole test system is then transferred to the scanner. Scanning can be performed after pre-selected time intervals, and an image analysis script is used to analyse the area fraction of penetrated grease/oil. Both visual and numerical results are obtained after each time interval. Test temperature, test grease and test duration can be selected according to the end-use of the packaging material. Benefits of this test method include automated and operator independent application of test oil, pre-selected scanning intervals, more realistic test durations and temperatures approaching actual packaging applications, and availability of both visual and numerical data. In addition, there is no need to touch the test samples during the testing.

KW - grease barrier testing

KW - packaging

M3 - Conference Poster

ER -

Rautkoski H, Nykänen H, Sneck A. More accurate method for grease barrier testing. 2013. Poster session presented at 26th IAPRI Symposium on Packaging, Espoo, Finland.