THE MANUFACTURING METHOD OF THE SEPARATOR FOR BATTERY

• Main Authors: PARK, SANG HYUN, KAN, TAE GYU, JO, BYOUNG CHEON, CHEONG, SANG BAE, CHO, DONG MAN, JEON, MIN HO, RHEE, JANG WEON
• Format: Patent
• Language: English; Korean
• Published: 04.07.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to a manufacturing method of a separation film for a battery and provides a method of providing a multilayered separation film by performing heat treatment or lamination after forming multiple layers or continuously processing a lamination process and a multilayer forming process and a separation battery for a battery manufactured by the same. The separation film for a battery according to the present invention can improve efficiency of a process and lower a failure rate by providing the manufacturing method of the separation film, forming a plurality of uniform porous membranes in an in-line process including a multilayer forming step without performing the lamination or heat treatment after forming multiple layers or performing additional winding unwinding steps after the lamination. The stable porous membrane with pores in the uniform size is provided by the heat treatment process. Further, it is possible to provide the separation film with fair price and efficiency as well as good quality in a separation film market.