Think Ahead, Treat it Right
Corona surface treatment allows for effective printing on plastic substrates, as long as converters are ready to prevent snags in the process.
Materials that do not make close contact with the roll under the electrode or the backup roll can affect the treatment process, says Stobbe. “Wrinkles in the material or air trapped under the material will result in some treatment of the backside of the material which will reduce the treatment level in the respective areas on the top side, and may also cause the material to stick together, or block,” he says.
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