| 摘要 |
Methods for applying a liner-free, or liner-less label, to a substrate, particularly glass or plastic (e.g., PET) substrates are described herein. The method includes applying an adhesive composition, such as a polymeric coating, to a label face sheet, activating the adhesive composition with an activating fluid, and contacting the label to the substrate. The activating fluid is preferably a mixture of water and one or more organic solvents, such as low molecular weight alcohols. In some embodiments, the labels exhibit a percent fiber tear greater than about 50, 55, 60, 65, 70, 75, 80, 85, 90, or 95% after one, two, three, four, or five minutes. In particular embodiments, the labels exhibits a percent fiber tear greater than 60, 65, 70, 75, 80, 85, 90, or 95% after two minutes. |
| 主权项 |
1. A fluid activatable adhesive composition in the form of a dry film, wherein the dry film is non-blocking and non-tacky,
wherein the composition comprises one or more polymers that are soluble in a volatile-base neutralized aqueous solution, wherein the one or more polymers are insoluble in water at neutral pH and soluble in water at alkaline pH, and wherein when the dry film is activated by an activating fluid comprising water and one or more organic solvents, the composition is tacky. |
