Abstract:
In an apparatus for manufacturing a microporous plastic film roll 12 by conveying a microporous plastic film 1 by conveying rollers 2 and then winding the microporous plastic film 1 in a roll shape while being brought close to a near roller 3 or being brought into contact with a touch roller 6, a part of the touch roller 6 to be in contact with the plastic film 1 has a Vickers hardness of 100 to 2,000, and the microporous plastic film 1 is conveyed so that a side of the microporous plastic film 1 opposite the side being in contact with the conveying rollers 2 is in a noncontact state in a range being in contact with the conveying rollers 2. Figure 1.
Abstract:
A microporous membrane roll (33) comprises cores (1, 11, 21, 31) formed in whole or in part from electrically conductive members (12, 13), and microporous membranes (34, S) which are wound around the cores (1, 11, 21, 31). A first surface (100) and a second surface (200) of the microporous membranes (34, S) are respectively equivalently charged with antipolar charges (102, 201). A method of manufacturing the microporous membrane roll (33) includes diselectrifying the microporous membranes (34, S) with a diselectrifier (35), and winding the microporous membranes (34, S) around the cores (1, 11, 21, 31) formed in whole or in part from the electrically conductive members (12, 13). When the microporous membranes (34, S) are unwound from the cores (1, 11, 21, 31), the microporous membranes (34, S) are prevented from being drawn toward either the microporous membrane roll (33) or peripheral devices by static electricity. The microporous membranes (34, S) are useful as a separator in either a fuel cell or a secondary battery. Figure 3