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Find equation to express the relation between 3 values?

I have to to estimate the relationship between OTR (cc/m^2/day) & WVTR (g/m^2/day)

WVTR is for water vapor transmission rate

OTR is for oxygen transmission rate

In the two tests, effective surface area of film tested was 10 cm^2

Here is the result I have to find the relation (it's have to include thickness of the plastic film)

plastic 1082 have a thickness of 0.0044 in

WVTR : 4.8

OTR : 120

Plastic 1083 have a thickness of 0.0045 in

WVTR : 0.88

OTR : 2.6

With that, I will find the WVTR value for a plastic of 0.00289 inche and OTR known value

Please show me how to find the relation between thickness, WVTR and OTR

Thanks a lot!

2 Answers

  • 1 decade ago
    Favorite Answer

    as thickness increase your WVTR decrease and OTR decrease


    Thickness = k 1/ WVTR xOTR ,,k =constant

  • Anonymous
    1 decade ago

    Sorry i'm not smart enough for that one!

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