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Abstract

An adhesive composition preferably contains: (1) an oligomer of at least 10,000 Da and an average functionality from 1-2; (2) a monomer; (3) an initiator; and optionally (4) a tackifier. The composition preferably has: (a) tack sufficient to pull labels from a magazine at 350 ft/min linear speed and/or at 750 labels/min without dropping more than 0.5% of all labels in a five-minute test; (b) a viscosity of 1,000-2,500 cps in an uncured state; (c) a peel strength greater than 1200 gm/3 inches when cured to 90% of monomer as measured with a glass bottle at a temperature of 75.degree. F. (23.9.degree. C.); (d) curing efficiency sufficient to cure to 90% of monomer within 1 sec of being radiated with 12 mJ/cm.sup.2 of UVC light; and (e) an ability to cure to provide a substantially bubble-free surface. The composition is particularly adapted for use as a radiation-curable adhesive for labeling containers.

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First Claim