초록 ▼

An article comprises sheet material which may be printed and having an adherent coating of microscopic, rupturable capsules in a binder on at least one surface thereof, the article being capable of undergoing plastic deformation and exhibiting: (a) a yield point on a stress-strain curve of less than

An article comprises sheet material which may be printed and having an adherent coating of microscopic, rupturable capsules in a binder on at least one surface thereof, the article being capable of undergoing plastic deformation and exhibiting: (a) a yield point on a stress-strain curve of less than 225 kg/cm2 (3200 psi) for a 127 micrometer (5 mil) thick material, (b) a difference in elongation at the yield point compared to the breaking point of at least 5.0 percent, and (c) an elongation at the yield point of less than 25 percent.

대표청구항 ▼

A method for rupturing microcapsules contained in an article comprising the steps of: (a) providing an article containing microscopic rupturable capsules, which capsules upon rupture release core material, said article comprising: (1) a support layer comprising printed sheet material capable of unde

A method for rupturing microcapsules contained in an article comprising the steps of: (a) providing an article containing microscopic rupturable capsules, which capsules upon rupture release core material, said article comprising: (1) a support layer comprising printed sheet material capable of undergoing plastic deformation, and (2) a coating layer comprising microscopic, rupturable capsules with releasable core material therein in a binder coated on at least one surface thereof; said article exhibiting a. a yield point on a stress-strain curve of less than 225 kg/cm2 for a 127 micrometer thick material, b. a difference in elongation at the yield point compared to the breaking point of at least 5.0 percent, and c. an elongation at the yield point of less than 25 percent; (b) applying tensile stress to said article sufficient to cause rupture of at least same of said capsules, so as to release core material therefrom.