Tamper evident adhesive and identification document including same
First Claim
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1. A composition for adhering a first article to a second article, the composition comprising:
- a thermally active low Tg polymeric resin; and
a multifunctional crystalline polymer.
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Abstract
A composition is provided for adhering a first article to a second article, the composition comprising a thermally active low Tg polymeric resin; and a multifunctional crystalline polymer. The thermally active low Tg polymeric resin can, for example, comprise 50-99% of the composition. The multifunctional crystalline polymer can, for example, comprise 1-50% of the composition. In one embodiment, the multifunctional crystalline polymer comprises 5-20% by weight of the composition. In one embodiment, the multifunctional crystalline polymer has a low molecular weight.
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Citations
21 Claims
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1. A composition for adhering a first article to a second article, the composition comprising:
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a thermally active low Tg polymeric resin; and
a multifunctional crystalline polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21)
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13. An identification document, comprising:
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an information-bearing layer;
an adhesive layer overlaying at least a portion of the information-bearing layer, the adhesive layer comprising a thermally active low Tg polymeric resin and a multifunctional crystalline polymer; and
a protective layer coupled to the information-bearing layer via the adhesive layer.
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Specification