Cantor Colburn LLP
Method for manufacturing a wide film, and wide film
A method for manufacturing a wide film comprises a casting operation, a stretching operation, and a trimming operation. The casting operation is a process of casting a film using a wide casting belt including a central belt, a left belt having a right end formed integrally with a left end of the central belt through a left joint in a length direction of the central belt, and a right belt having a left end formed integrally with a right end of the central belt through a right joint in the length direction of the central belt. The stretching operation is a process of stretching a film stripped off from the wide casting belt using a tenter. The trimming operation is a process of trimming predetermined parts of left and right sides of the stretched film. In the trimming operation, mark parts by the left and right joints are also trimmed.
SK INNOVATION CO., LTD.
C B C B B
C08J B29C C08J B29K B29C
inventional inventional additional additional inventional
Cholho Yooseock Juntae Kinam Kwangjin Hyukjun
Lee Hwang Choi Chung Chung Kim