DE-TACKIFIED CONTINUOUS EXTRUSION PROCESS APPLIED INTEGRATEDLABEL PRODUCT

摘要

In the manufacture of integrated labels it is desirable to apply pressure sensitive adhesive in a continuous manner, yet it is undesirable for active adhesive to be on one or more edges of the form since active adhesive can interfere with nip rollers upon entering a laser or other non-impact printer, orcan otherwise interfere with proper operation of the printer. By using an adhesive -- that is de-tackified by direct exposure to a sufficient type and dosage of electromagnetic radiation (such as a hot melt adhesive de-tackified by applying about 3000 mJ/cm2 total dosage of ultraviolet radiation) -- that problem may be avoided. Apparatus for producing integrated labels with the adhesive at one or more edges being de-tackified may include a first conveyor for conveying sheets (either in stacked or single sheet form) in a first direction, and at least one ultraviolet radiation source mounted adjacent a side of the conveyor parallel to the first direction. A stacker, packaging device (such as ashrink wrap machine), 90.degree. conveyor, and/or turn table may also be utilized.