A continuous method for making foams having uniform and/or small cell sizes
and articles made with these foams are described. The method allows for
adjusting or controlling cell size and cell size distribution by
controlling temperature and/or blowing agent concentration. The foams
feature small and/or uniform cell sizes and may be comprised of amorphous
thermoplastic polymers, pressure sensitive adhesive compositions, and
immiscible thermoplastic polymer compositions. A method for coextruding
the foams is also described.