Tamper-indicating sheet

Claim 2

A blush coating composition comprising a mass of light-scattering, primary resin particles which are adapted to coalesce to a more compact coating (a) on application of heat thereto, or (b) on exposure to aliphatic or aromatic solvent, said mass of particles being in intimate contact with a minor amount of a binder composition which, on exposure to any of a wide spectrum of aromatic or aliphatic solvents, will form a means to substantially impair the light-scattering character of said mass of particles and transform said mass of particles into a more compact, normally translucent, coating.

Claim 3

A blush coating composition as defined in claim 1, wherein said binder comprises solvent-leachable plasticizer components which form means to accelerate coalescence of said primary resin particles.

Claim 4

A blush coating composition as defined in claim 1 wherein said binder is thermally-activatable to allow coalescence of said primary resin particles at a temperature which is in the range of about 140°-220° F.

Claim 5

A blush coating composition as defined in claim 1 wherein said binder is present in the coating in a volume of 10-25% based on total volume of solids in said coating.

Claim 6

The blush coating composition of claim 1, wherein the primary resin particles coalesce on exposure to aromatic solvents, and the binder composition forms means to substantially impair the light-scattering character of the particles upon exposure to aliphatic solvents.

Claim 7

The blush coating composition of claim 1, wherein the primary resin particles coalesce on exposure to aliphatic solvents, and the binder composition forms means to substantially impair the light-scattering character of the particles upon exposure to aromatic solvents.

Claim 8

The blush coating composition of claim 1, wherein the binder is thermally activatable to allow coalescence of the primary resin particles at a temperature which is below the coalescence temperature of the primary resin particles when thermally activated without the binder.

Claim 9

A lottery ticket comprising, as an integral portion thereof, a means for detecting thermal and solvent tampering with said ticket, a blush coating comprised of a mass of light-scattering, polymeric particles which are adapted to coalesce to a more compact coating (a) on application of heat thereto or (b) on exposure to an aliphatic solvent or an aromatic solvent, the improvement wherein said mass of particles is in intimate contact with a minor amount of a binder composition which, on exposure to any of a wide spectrum of aromatic or aliphatic solvents, will form means to substantially impair the light-scattering character of said mass of polymeric particles and transform said mass of particles into a more compact, normally translucent coating.

Claim 10

A lottery ticket comprising, as an integral portion thereof, a means for detecting thermal and solvent tampering with said ticket, a blush coating comprised of a mass of light-scattering, polymeric particles which are adapted to coalesce to a more compact coating (a) on application of heat thereto or (b) on exposure to an aliphatic solvent or an aromatic solvent, the improvement wherein said mass of particles is in intimate contact with a minor amount of a binder composition which, on exposure to any of a wide spectrum of aromatic or aliphatic solvents, will form means to substantially impair the light-scattering character of said mass of polymeric particles and transform said mass of particles into a more compact, normally translucent coating.

Claim 11

A lottery ticket as defined in claim 8 wherein said binder comprises solvent-leachable plasticizer components which form means to accelerate coalescence of said light scattering particles.

Claim 12

A lottery ticket as defined in claim 8 wherein said binder is thermally-activatable to allow coalescence of said light-scattering resin at a temperature which is in the range of about 140°-220° F.

Claim 13

A lottery ticket as defined in claim 8 wherein said binder is present in the coating in a volume of 10-25% based on total volume of solids in said coating.

Claim 14

A lottery ticket as defined in claim 11 wherein said blush coating is adjacent a colored substrate and wherein, on being coalesced, said blush coating forms a translucent means to permit viewing of said colored substrate.

Claim 15

The lottery ticket of claim 8, wherein the polymeric particles coalesce on exposure to aromatic solvents, and the binder composition forms means to substantially impair the light scattering character of the particles upon exposure to aliphatic solvents.

Claim 16

The lottery ticket of claim 8, wherein the polymeric particles coalesce on exposure to aliphatic solvents, and the binder composition forms means to substantially impair the light scattering character of the particles upon exposure to aromatic solvents.

Claim 17

The lottery ticket of claim 8, wherein there binder is thermally activatable to allow coalescence of the polymeric particles at a temperature which is below the coalescence temperature of the primary resin particles when thermally activated without the binder.

Claim 18

A sheet material comprising (a) a polymer-based cohesive seal and (b) a polymer-based coating formed of small thermoplastic polymeric particles deposited in intimate contact with another within said, coating and wherein the appearance of said coating is irreversibly and substantially changed by subjecting said polymeric particles to temperatures of at least 140° F., said polymer-based coating comprising a binder composition with a solvent-leachable plasticizer component forming means to accelerate said change in appearance.

Claim 19

A sheet material comprising (a) a polymer-based cohesive seal and (b) a polymer-based coating formed of small thermoplastic polymeric particles deposited in intimate contact with another within said, coating and wherein the appearance of said coating is irreversibly and substantially changed by subjecting said polymeric particles to temperatures of at least 140° F., said polymer-based coating comprising a binder composition with a solvent-leachable plasticizer component forming means to accelerate said change in appearance.

Claim 20

A secure package resistant to undetectable inspection and formed of the sheet material as defined in claim 16 and comprising therewithin articles marked for indicating a winning or losing status in a lottery system.

Claim 21

A sheet material as defined in claim 16 wherein said binder is thermally-activatable to allow coalescence of said particles at a temperature which is in the range of about 140°-220° F.

Claim 22

A sheet material as defined in claim 16 wherein said binder is present in the polymer-based coating in a volume of 10-25% based on total volume of solids in said coating.

Claim 23

A sheet material as defined in claim 16 wherein said polymer-based coating is adjacent a colored substrate and wherein, on being coalsced, said blush coating forms translucent means to permit viewing of said colored substrate.

Claim 24

The sheet material of claim 16, wherein the polymeric particles coalesce on exposure to aromatic solvents, and the binder composition forms means to substantially impair the light scattering character of the particles upon exposure to aliphatic solvents.

Claim 25

The sheet material of claim 16, wherein the polymeric particles coalesce on exposure to aliphatic solvents, and the binder composition forms means to substantially impair the light scattering character of the particles upon exposure to aromatic solvents.

Claim 26

The sheet material of claim 16, wherein the binder is thermally activatable to allow coalescence of the polymeric particles at a temperature which is below the coalescence temperature of the primary resin particles when thermally activated without the binder.