Optically Detectable Splicing Tapes Without Primer
Publication Date: 2015-Oct-07
The IP.com Prior Art Database
The optically detectable layer with an L value greater than 10 in a splittable flying splice tape does not need any special treatment for example a primer to make the system function
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OPTICALLY DETECTABLE SPLICING TAPES WITHOUT PRIMER
Flying splice tapes are used in the paper and print industry to join supply rolls of web material, such as paper or film for example, for use continuous processes such as coating, printing, etc. These processes often include exposure of the moving web to elevated temperature in order to dry applied coatings, inks, etc.
As the end of a first supply roll is approached a second supply roll is brought into position to be joined to the first supply roll on the fly without change of the line speed. To successfully join the two rolls the splicing equipment must be able to detect the position of the flying splice tape on the second supply roll. This can be done in a variety of ways such as applying a label on the second supply roll; providing a mark on the second supply roll; etc.
In all instances it is required that equipment be able to detect the marker and synchronize the splicing equipment to ensure the desired splicing operation is accomplished. An example of an optically detectable flying splice tape is described in EP 1544142.
It has been previously reported that a flying splice tape that includes a backing layer, an optically detectable layer, a layer of primer material, and an adhesive layer in that order is able to provide adequate bond strength between the outer adhesive layer and the optically detectable layer when exposed to elevated temperatures. It was disclosed that the optically detectable layer could b...