3 2 to 10 4 a viscosity from 30 to 900 mpa u00b7 s and a particle size from 0 015 to 0 35 microns hereinafter referred to as 34 type b component 34 note that both type a and type b components must be resins of the crosslinking type to ensure resistance to repeated washing and dry cleaning in order to expedite crosslinking and more generally to facilitate the production process c a cross linking agent d a surfactant or wetting agent e an antifoaming agent and f a slipping agent may optionally be added the addition of such agents does not affect the aesthetic and thermal characteristics of the batt according to the present invention note that some commercially available polymer emulsions contain some of all of the components listed under c d e and or f while other emulsions do not require the addition of such components the final calendering step step 3 serves a twofold purpose it creates an air chamber or air pocket in the interior of the batt and it creates a film or layer which makes the batt react to changes in the outside temperature or in the amount of heat released by the wearer 39 s body by changing the batt 39 s overall thermal exchange coefficient said dynamic or reactive film is created on at least one face of the batt i e the face on which the glue formulation disclosed above is sprayed during the calendering step for a short predetermined time one of the cylinders of the calendering machine is held into contact with the surface being processed so as to provide an expansion of the batt capable of substantially forming an air chamber in the interior of the batt however.