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| is monitored by a PLC and permits to remain constant through the time because his ratio can be adjusted by changing the gears on the rollers. The time required for the gears changing is about 1 minute. The device is complete with rollers supported in the upper part to facilitate the passage of the film during the manual film-reel change-over. Pre-stretch ratio up to 400% (1 film meter becomes 5 meters). It is possible to set up the film tension on the product during turns in the top or in the |
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bottom and during the up and downwards wrapping cycle. |
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