Cutting Dies 479.646.2533
Fax Dies 479.646.9536
Plates 479.648.3560
Fax Plates 479.648.3572
Product lift rubber is the rubber required to lift the blank off of the dieboard and send it up the stacker. This rubber is very important and much has been made of its function. You need enough rubber to lift the blank off of the dieboard and no more. If the rubber is too tall it will net undesirable marks on the corrugated finished product.
The rubber needs to be 1/16" to 1/8" above the knife using ½ x ½ x 1". You should rubber approximately 1/3 of the way (12 to 14 inches off of the lead edge). Any multiple up blanks should be considered to have a new lead edge and should be rubbered the same as the first lead edge. You must take care to keep this lift rubber at least a thumb width away from any internal slot or cutout.
Interior scrap rubber needs to be approximately 3/8" above the knife using ¾" Tall x 5/8" Wide x 1" Long. Try to create the void corner, flipping action so that the scrap can be quickly ejected or flipped off of the blank. Sometimes using less rubber is more effective than loading up the dieboard with more rubber which would require more pressure to cut. External scrap rubber needs to be ¼" above the knife using 5/8"x 5/8"x 1". Make sure that you create the void corner flipping action to the trail edge and to the outside of the dieboard when possible.
Horizontal scores across the flutes do not require any rubber. Rubbering of diagonal scores is optional. The light crush on each side of the score aids in folding. Vertical scores that go through the press should be assisted with a high-density profiled score rubber. The rubber needs to be just below the score approximately 1/32 of an inch.