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OTR and WVTR rates dependency on biological activity inside pouch


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Zeeshan

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Posted 02 January 2018 - 05:20 AM

I would like to know whether OTR and WVTR rates have any relation with biological intrusion or biological activity inside the retort pouch?

 

Regards.

Zeeshan.



David Levy

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Posted 06 January 2018 - 03:20 PM

In principal, OTR and WVTR values as specified in  the DS, are the packaging material properties. The meaning – they are measured at specific conditions as per the related standard (ASTM, ISO etc.).

 

For a specific package the OTR and the WVTR depend on the concentration difference of the oxygen or water vapor between the 2 sides of the package – as the general case of diffusion.  In case the biological activity changes those concentrations, the rate will change as well.

 

Regards,

David Levy



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Berton lee

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Posted 05 August 2019 - 05:45 AM

We are manufacturer of WVTR&OTR, we would like to sharing our point:

 

1.WTR&OTR mostly test the barrier property for packaging material,this is apparently related to shelf life.

2.For biological intrusion or biological activity, need to consider it's living conditions, yes, Water and Oxygen is basic. So WVTR&OTR matters really matters.

3.By the way, temperature and RH is important as well.

 

Best regards

Berton Lee



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Charles.C

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Posted 05 August 2019 - 05:53 AM

Acronyms galore.

 

All equally unintelligible. :crybaby:


Kind Regards,

 

Charles.C


Zeeshan

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Posted 28 August 2019 - 07:50 AM

Acronyms galore.

 

All equally unintelligible. :crybaby:

Unfortunately did not understand what do you mean?



zanorias

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Posted 28 August 2019 - 08:09 AM

Unfortunately did not understand what do you mean?

 

Acronym: an abbreviation formed from the initial letters of other words and pronounced as a word

 

Unintelligible: impossible to understand



Charles.C

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Posted 28 August 2019 - 04:38 PM

Unfortunately did not understand what do you mean?

 

1.5 Years ! :smile:

 

OTR means what ?

 

WVTR means what ?


Kind Regards,

 

Charles.C


pHruit

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Posted 29 August 2019 - 11:07 AM

OTR = oxygen transmission rate

WVTR = water vapour transmission rate

 

HTH! :ejut:



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Zeeshan

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Posted 30 August 2019 - 06:03 AM

1.5 Years ! :smile:

 

OTR means what ?

 

WVTR means what ?

:oops2:



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