A question about Density of an object...please help

[GinG]

Goood Morning All,

Just wondering if anyone can help, I work in the stretch film industry and to work out a weight of the film we do a formula length x width x thickness x 0.92(density).

Now we aree doing another prduct where the film is acctually pre-stretched by a machine, so basically taking the film down from a 17micron to say an 8micron.

Would stretching change the properties of the film and therefore change the density of the product? i.e change the potential number we need to use for the weight.

Only reason I ask is I am nt convinced the same formula works, as the reel weights are coming out no where near when using it.

Thanks

Graham

 

[GinG]

Thanks Vixen, as we do not have an accurate way of measuring the density I think it will be impossible to do it.

From what you are saying, the 0.92 we would use for the unstretched film could potentialy not work for the stretched film?