Interfolder device with dynamic pressure section connected at the outlet side of the folding rollers
First Claim
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1. An interfolder device for folding sheet material in a zig-zag manner comprising;
- a pair of counter rotating rollers for receiving the sheet material;
an elongated guide track disposed adjacent to said rollers for receiving, supporting and conveying the sheet material as it is folded; and
,dynamic pressure means coupled to said guide track for providing a vacuum brake to the sheet material as it is conveyed along said guide track.
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Abstract
An interfolder device for folding sheet material in a zig-zag manner which uses a pair of counter rotating rollers for receiving the sheet material and an elongated guide track disposed below the counter rotating rollers for receiving, supporting and conveying the sheet material as it is folded on the guide track. There is also provided a dynamic pressure means consisting of a vacuum that is coupled to the guide track by means of perforations formed in the guide track in order to apply a brake to the sheet material as it is supported and conveyed along the track during its folding process.
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Citations
8 Claims
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1. An interfolder device for folding sheet material in a zig-zag manner comprising;
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a pair of counter rotating rollers for receiving the sheet material; an elongated guide track disposed adjacent to said rollers for receiving, supporting and conveying the sheet material as it is folded; and
,dynamic pressure means coupled to said guide track for providing a vacuum brake to the sheet material as it is conveyed along said guide track. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of folding sheet material in a zig-zag manner comprising the steps of;
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receiving from a pair of counter rotating rollers the sheet material onto an elongated guide track; applying a vacuum to the guide track in contact with the sheet material for braking the sheet material as it is supported and conveyed along the guide track.
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Specification