Web with patterned adhesive for forming labels for foam cups
View Patent ↗A label-wrapped foam cup combines a label in the shape of an annular section with a foam cup having a frusto-conical shape by wrapping the label around a foam cup and securing the label to the foam cup with a patterned adhesive. Text and graphics are printed on a front surface of the labels and a patterned adhesive is printed on a back surface of the labels. The patterned adhesive includes discontinuous deposits of adhesive that bond the label to the foam cup and form corresponding undulations in the front surface of the label. The adhesive pattern can be printed in registry with the text and graphics to provide enhanced visual effects.
1. A web for forming a succession of labels for wrapping in a frusto-conical form around foam cups comprising
a continuous web having inner and outer surfaces,
graphics printed on the outer surface of the web defining a succession of labels having a fixed length in a direction for wrapping around the cups, and
a heat-activated adhesive printed on the inner surface of the web in registration with the graphics printed on the outer surface of the web in a succession of adhesive lengths less than the fixed length of the labels.
2. The web of claim 1 in which the heat-activated adhesive is applied within boundaries so that when the labels are die-cut from the web, the heat-activated adhesive is recessed from peripheries of the labels.
3. The web of claim 2 in which each of the labels includes a margin between the boundaries of the heat-activated adhesive and the peripheries of the labels having an average width of at least one-half millimeter.
4. The web of claim 3 in which the margin has an average width less than two millimeters.
5. The web of claim 1 in which the heat-activated adhesive is printed on the inner surface of the web in a pattern of discontinuous deposits of adhesive.
6. The web of claim 5 in which the discontinuous deposits of adhesive are printed as a plurality of lines.
7. The web of claim 6 in which the plurality of lines of adhesive form a crisscross pattern.
8. The web of claim 5 in which the discontinuous deposits of adhesive are printed as a plurality of beads.
9. The web of claim 8 in which the plurality of beads of adhesive are distributed in an array pattern.
10. The web of claim 1 in which the labels have a width, and the discontinuous deposits vary in a direction along the width of the labels.
11. The web of claim 10 in which the discontinuous deposits vary in density along the width of the labels.
12. The web of claim 10 in which individual deposits of the adhesive vary in volume along the width of the labels.
13. The web of claim 1 further comprising a barrier layer on the inner surface of the web.
14. The web of claim 13 in which the barrier layer is located between the inner surface of the web and the heat-activated adhesive.