Stretch method of polymer film and manufacturing method of polymer film
A technology of polymer film and polymer film, which is applied in the stretching of polymer film and the manufacture of polymer film, and can solve problems such as difficulty in elongation, film breakage, and poor deformation
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[0038] Such as figure 1 As shown, the off-line stretching equipment 2 has a film storage chamber 4 , a reservoir 5 , a tenter unit 6 , a heat relaxation chamber 7 , a cooling chamber 8 , and a film winding chamber 9 in this order. The film storage chamber 4 accommodates the elongated film 3 . In the tenter unit 6 , stretching treatment is continuously performed on the film 3 .
[0039]The film storage chamber 4 includes a turret-type film delivery unit 10 and a joining unit 11 . The film delivery unit 10 has a turret arm 13 . A pair of mounting shafts (mounting shafts) 12 a are provided at both ends of the turntable arm 13 . The turret arm 13 is intermittently rotated by 180 degrees so that one mounting shaft 12 a is set at the film delivery position 16 and the other mounting shaft 12 a is set at the core replacement position 17 . At the core replacement position 17 , the film roll 14 is attached to the attachment shaft 12 a, and the film roll 14 attached to the attachment...
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