Abstract: A method of making a non-cylindrical shaped metal can that is provided with a stylized, irregular shape includes steps of forming a substantially cylindrical sidewall portion (12) that has a plurality of ribs integrated therein. These ribs provide additional strength to the sidewall portion. The cylindrical sidewall portion may then be shaped into a non-cylindrical, stylized shape. The ribs (26) are preferably positioned at portions of the shaped sidewall portion (12) that are anticipated to need increased strength in order to withstand deformation under pressure. The sidewall (12) is then assembled to at least one can end member (30) to form a completed shaped metal can (28). The ribs may either be arranged longitudinally, circumferentially, or both may be provided to form a grid structure.

Abstract: Improved medical devices and instruments prepared by an improved method of producing hydrophilic, gamma-irradiation or electron beam-irradiation induced polymerized and chemically grafted coatings or plastic surfaces of articles adapted for contacting living tissue,the improvement comprising carrying out the graft polymerization in an aqueous solution under specific combinations of the following conditions:1) monomer concentration in the range of from about 0.1% to about 50%, by weight;2) total gamma or electron beam irradiation dose in the range of from about 0.001 to less than about 0.50 Mrad; and3) gamma dose rate in the range of from about 10 to about 2500 rads/min or electron beam-irradiation dose rate in the range of from about 10 to about 10.sup.8 rads/min.

Abstract: Improved medical devices and instruments prepared by an improved method of producing hydrophilic, gamma irradiation induced polymerized and chemically grafted coatings or plastic surfaces of articles adapted for contacting living tissue, the improvement comprising carrying out the graft polymerization in an aqueous solution under specific combinations of the following conditions:(1) monomer concentration in the range of from about 0.5% to about 50%, by weight;(2) total gamma dose in the range of from about 0.01 to less than about 0.50 Mrad;(3) gamma dose rate in the range of from about 10 to about 2500 rads/min; and(4) maintaining the molecular weight of the polymer in solution in the range of from about 250,000 to about 5,000,000.

Abstract: A method for modifying a PMMA surface by the gamma-irradiation induced polymerization thereon of N-vinylpyrrolidone, 2-hydroxyethylmethacrylate or a mixture thereof while maintaining the following conditions:(a) monomer concentration in the range of from about 0.5% to about 50%, by weight;(b) total gamma dose in the range of from about 0.01 to less than about 0.50 Mrad;(c) gamma dose rate in the range of from about 10 to about 2500 rads/minute; and(d) maintaining the molecular weight of the polymer in solution in the range of from about 250,000 to about 5,000,000.The invention also relates to modifying polypropylene, polyvinylidene fluoride, polycarbonate and silicon surfaces according to a similar method as well as materials produced by the above methods which are useful as ocular implants.