Abstract: When it is complete to unwind a first PVA film from a first film roll, it is started to unwind a second PVA film from a second film roll. A trailing end portion of the first and second PVA film and a leading end portion of the second PVA film are overlaid at a film connecting position. A receive stage and a seal head of a heat sealer sandwiches overlaid portions, and a head body of the seal head heats them so as to thermally melt and adhere the first and second PVA films. During the thermal melt-adhesion, a thermal melt-adhesion line is formed in the overlaid portions of the first and second PVA films.

Abstract: A polymer-film orienting machine comprises a processing apparatus and a tenter apparatus. The processing apparatus comprises a cleaning bath, a dyeing bath and a hardening bath. The cleaning bath is provided with a draining roller pair and a draining blade pair. The draining roller pair is constituted of two draining rollers. The draining blade pair is constituted of two draining blades. The draining roller pair is disposed at a position where the PVA film has just passed through the cleaning bath. The draining blade pair is disposed at a downstream side of the draining roller pair in a conveyance direction of the PVA film. Similarly to the cleaning bath, the dyeing bath and the hardening bath are respectively provided with a draining roller pair and a draining blade pair.

Abstract: A right rail and a left rail are constituted of an entrance rail portion, an exit rail portion, and a rail connecting portion. The respective portions of the rails are moved in a film-width direction via a rail attachment and a positioning section. The positioning section is constituted of a lead screw rod and a positioning motor. The respective positioning motors are controlled by a controller. Upon inputting an entrance width and an exit width through a data input section, the controller moves positions of the respective rail attachments and performs orientation so as to decline an orientation axis.

Abstract: A right rail and a left rail are constituted of an entrance rail portion, an exit rail portion, and a rail connecting portion. The respective portions of the rails are moved in a film-width direction via a rail attachment and a positioning section. The positioning section is constituted of a lead screw rod and a positioning motor. The respective positioning motors are controlled by a controller. Upon inputting an entrance width and an exit width through a data input section, the controller moves positions of the respective rail attachments and performs orientation so as to decline an orientation axis.