Patent ID: 8132576

Claim:
A capsule for containing a hair coloring agent, the capsule comprising: a male side formed of a sheet of material having a male side hinge end and a male side free end, said male side being embossed so as to provide a projection bounded on all sides by projection sidewalls and a top surface; a female side formed of a sheet of material having a female side hinge end and a female side free end, said female side being embossed so as to form a cavity having a distal end near said female side hinge end and a proximal end near said female side free end, said cavity being bounded on all sides by cavity sidewalls and a base surface, said projection sidewalls and said cavity sidewalls being configured to sealably engage together when said projection resides in said cavity, at least one of said base surface and said top surface having a region that is further embossed with a reinforcing pattern of interconnected elements that form boundaries around an array of islands that are spaced apart; and a hinge region joining said female side hinge end to said male side hinge end such that said female side and said male side can be swung into a sealing relationship as said free ends are swung into contact.