Why do rolls telescope




















If there is not enough tension on the rolls when they are wound, they can also go out of shape. When they run through a printer, the tension will vary from tight to slack and can cause registration issues.

The only way to minimize that problem is to operate the printer at a lower speed. This effect is caused by the adhesive on the labels, minor material imperfections and the tension used to wind the labels. Problem: Core issues can stem from loose, crushed or offset rolls. Loose cores cause rotational displacement with the web tearing free from the core, causing tension and control problems with subsequent processes.

Crushed rolls are usually from stacking rolls on end too high with the bottom rolls failing in an axial direction. An offset core is a defect that results in an abrupt shift in positioning along the edge of the roll. Solution: Core issues can result from winding the web too softly. The web should be wound evenly, but harder at the start of the roll. Do not stack rolls too high, and to avoid offset, make any necessary tension adjustments gradually and avoid abrupt changes in tension, rider roll loading, or web draw control at winder.

Problem: This roll winding defect exhibits the classic concave or convex roll caused by progressive roll edge misalignment. It is only noticed after the roll has started to be unwound. Solution: Controlling the hardness of the wind, reducing web tension, or reducing cross-deckle caliper variation can resolve telescoping. Problem: The telltale wavy or shaggy edge at the slit causes edge curl. Solution: Ensuring slitters are set to the proper depth or reducing web tension through the slitter section can help prevent slitter edge curl.

You will need to cut out the inside of the foam circle without cutting the outer edge of the circle. Gently fold your foam circle and use your scissors to cut the middle. Run the craft glue around one side of your foam circle and glue one sheet of acetate to the foam circle.

Turn the foam circle over and sprinkle some Patriotic Star Sequins into the middle. Line the outside edge with glue and adhere the second acetate circle on top. Set this piece aside. Paint your cup with Acrylic Paint and let dry. Wrap construction paper around your cardboard tube and glue. Leave about 3 inches at the end of the tube uncovered so you can insert your cup.

You can wrap different colors of paper on top of each other to create a design as shown. Put craft glue along the top edge of the cup and glue the foam circle on to the top of the cup. Now slide the toilet roll into the hole, from the outside of the cup. It should fit quite snugly, but use 3 long pieces of tape to attach the toilet roll to the cup. Stick the tape to the inside of the cup and the inside of the toilet roll for the best finish.

And using a craft knife, scissors, or a sharp pencil cut a small hole in the middle of the card. A hole the diameter of a pencil is about perfect. Cut a small square from the soft coloured plastic, just wide enough to cover the small hole. Tape the plastic square over the hole. Make sure the tape is facing out of the cup. Now paint 2 coats of primer over the whole thing, including inside the cup, and down the toilet roll. You can either get out a drop sheet and let the kids go crazy, as we did.

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