From sheet layered product segmentation manner and its segmentation device and the long shaku lamination sheet to which the optical sheet layered product

摘要

Provided is a production method and a production device which can cut an optical sheet laminate (21) free from interlayer bonding by means of a knife edge without disturbing the position of the optical sheet laminate (21).  After passing between a supporting roller (50) and a retaining roller (52), a carrier (35) having a punched optical sheet laminate (21) is wound around a folded roller (51) having the advancing direction thereof changed slightly and then carried.  The optical sheet laminate (21) is separated from the carrier (35) near the outlet of the supporting roller (50) having the advancing direction thereof changed slightly.  The sheet laminate is cut while a change in the advancing direction is reduced and thereby the amount of distortion, due to the difference between the inner and outer circumferences which is generated by winding around the supporting roller, is reduced, and an easy-to-take-out state is brought about by increasing the winding angle when the sheet laminate is taken out, whereby the optical sheet laminate (21) can be cut stably without disturbing the position of the sheet laminate.