not adhere to the cured emulsion and does not cause the emulsion to break at the surface of the film polypropylene is convenient because it has these properties is readily formed into a film is inexpensive and can be recycled after being placed on a continuous film the film is closed around the emulsion the film can be simply laid over the emulsion in an overlapping fashion or edges of the film can be interlocked with a mechanical closing zip lock alternatively the film edges can be sealed together using for example a heat seal or adhesive a continuous tube of the emulsion in the film is therefore created this continuous film is then more easily cured and handled after curing the film is then preferably removed from outside of the cured emulsion and the cured emulsion is then further processed by for example slicing the emulsion into thinner pieces removing water and drying the emulsion the emulsion could be placed on the continuous sheet in a thickness such that slicing of the resultant cured foam to thinner sheets is not necessary if a relatively thin sheet of emulsion is cured on the continuous sheet so that slicing is not necessary the continuous sheet could be a material that adheres to the cured foam and the continuous sheet could then function as a backing sheet to the foam slicing of the cured foam could also be avoided by layering films and emulsion repeadily so that a significant thickness for example four inches of emulsions could be cured at one time and then separated by pulling.