The invention provides an
adhesive-carrying
porous film for use as a battery separator, which comprises: a substrate
porous film such that when a probe of a probe penetrating thermomechanical analyzer, said probe having a
diameter of 1 mm, is placed on the
porous film under a load of 70 g to measure a thickness thereof while heating the porous film from
room temperature at a rate of 2° C. / minute, a temperature at which the thickness of the porous film decreases to a half of the thickness of the porous film when the probe was initially placed thereon is 200° C. or more; and a partially crosslinked
adhesive carried on the substrate porous film, the partially crosslinked
adhesive being prepared by reacting a
reactive polymer having a functional group capable of reacting with an
isocyanate group therein with a polyfunctional
isocyanate so that the
reactive polymer is partially crosslinked. Such a porous film (a separator) is temporarily bonded to an
electrode to provide an
electrode / separator laminate. In manufacturing a battery, the use of the laminate makes it possible to manufacture a battery efficiently with no mutual slip movement between the
electrode and the separator, and is addition, the porous film (the separator) itself, after manufacturing a battery, functions as a separator which does not melt or break, and has a small heat shrinkage under high temperatures