Heat and Mass Transfers in a Tri-Layer Film

As already stated, these profiles of temperature developed through the thickness of the film in the case of forced heat convection can be defined by Equation (3.16) when the thermal parameters are constant. 

6 Heat and Mass Transfers in Tri-Layer Bottles with a Mould at Constant Temperature on the External Surface 

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The process of heat and mass transfers in a tri-layer film, when the recycled polymer layer is surrormded hy two virgin polymer layers, is shown in Figure 3.2. 

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