Patent ID: 6382408
Filing Date: 2002-05-07
Classification: A45C,A61L,Y10S

Abstract:
A container which is suitable for holding at least one substance for use in a process for cleaning contact lenses using a fluid, the container comprising:at least one first and at least one second part assembled to form a sealed cavity for holding at least one substance, wherein the first part: is formed of a material having a first expansion coefficient when embedded in the fluid, and is at least substantially insoluble in the fluid, wherein the second part: is formed of a material having a second expansion coefficient when embedded in the fluid and is at least substantially insoluble in the fluid, and has an outer surface constituting a portion of an outer surface of the container, wherein: the first expansion coefficient is smaller than the second expansion coefficient, wherein: the container has at least one of: a) cross section wherein the first part defines an envelope curve and wherein at least one portion of the second part extends outside an envelope surface, and b) two or more portions of the outer surface of the assembled container are constituted by surface parts of the second part at at least two different sides thereof, and wherein: the materials of the first and the second parts are so that an initial, unexpanded sheet of the material of the second part will expand to a sheet of a mean thickness of at least 105% of the mean thickness of a fully expanded sheet of the material of the first part and of the same initial unexpanded thickness.