Stretching flows for thin film production: Part 2. Film-stretching over a conical mandrel 

 -  Journal of Non-Newtonian Fluid Mechanics, 4(1-2), p.73-8/8, 1978 .
<br/><br/> The equations and boundary conditions governing the biaxial stretching of a plastic tube over a conical mandrel are developed. Elastic and visco-elastic rheological models for a particular type of polypropylene are used. Solutions are obtained for isothermal and non-isothermal conditions and .they are expressed as plots of radial draw against forward draw.