Orbit Manufacturing 2000 manual Wave pattern troubleshooting, Paper tension Wave, Nip Wave

Troubleshooting Orbit™ 2000 Operation and Maintenance Manual

7.2 Wave pattern troubleshooting

Waves or ripples in laminated images can be caused by; paper tension, laminating temperature, incorrect nip, clutch tension, binding of film core on brakes or core ends, and cooling. Below is a description of some common waves. Please refer to the wave illustration associated with each description.

Paper tension ( Wave 1 )

Cause: These waves, visible in the finished image, are caused by uneven paper tension across the width of the image, often called D-Waves. This can occur due to improper handling of the paper at the laminator. Prior to entering the nip, the middle of the image becomes baggy and eventually folds on itself.

Solution: To remove these waves, check that the feed head is feeding the images smoothly and/or check the nip pressure of the laminating rollers.

Laminating temperature ( Wave 2 )

Cause: These are caused by the different rates of expansion and contraction of laminates and papers ( specifically coated ink-jet and photographic papers ) during lamination. The waves are induced when the laminate and paper are both heated and then cooled, causing stress due to different rates of cooling between the film and the paper.

Solution: To eliminate the waves, you may either decrease the laminating temperature or increase the speed.

Nip ( Wave 3 )

Cause: These waves are seen on one side or the other of the laminated image. They are generally caused by uneven settings of either the laminating rollers or the pull rollers, causing uneven tension between the laminating rollers and the pull rollers.

Solution: Check the paper pull adjustment, laminating roller pressure and/or the spreader roller ( if equipped ) adjustment.

Page 7 - 4 © GBC Films Group January 2001