Abstract: An assembly for molding a lens including a peripheral gasket member having a surrounding wall around an axis to define a through-cavity, the surrounding wall having an internal circumferential ridge portion protruding inwardly towards the axis and partitioning the surrounding wall into an upper wall portion and a lower wall portion, wherein the internal circumferential ridge portion includes a first ridge-flank and a second ridge-flank; a film disposed at the first ridge-flank; an annular member disposed over the film to retain the film between the annular member and the first ridge-flank; a first mold part disposed with a circumferential edge in abutment with the upper wall portion; and a second mold part disposed opposite the first mold part and with a circumferential edge in abutment with the lower wall portion, wherein the peripheral gasket member, the first mold part and the second mold part define a molding cavity therebetween.

Abstract: The invention provides a machine for manufacturing an ophthalmic article molded by casting and having a straight peripheral edge, comprising a mold assembly (2) having first and second molding shells (10, 13) provided with first and second predetermined molding surfaces (12, 14) and facing to each other, an adhesive tape member (20) joining said shells for forming a molding cavity (8), having a Young's modulus greater than 200 MPa and a maximum shear stress smaller than 0.05 MPa when measured at a temperature of polymerization of a molding material, and also configured to form a peripheral case of the mold assembly in which said first molding shell is able to be displaced relative to the second molding shell without affecting an intermediate portion (22) of the adhesive tape member which define said cavity, and a filling aperture formed in said adhesive tape member for introducing by casting said material into said cavity for forming the article.

Abstract: The invention provides a machine for manufacturing an ophthalmic article molded by casting and having a straight peripheral edge, comprising a mold assembly (2) having first and second molding shells (10, 13) provided with first and second predetermined molding surfaces (12, 14) and facing to each other, an adhesive tape member (20) joining said shells for forming a molding cavity (8), having a Young's modulus greater than 200 MPa and a maximum shear stress smaller than 0.05 MPa when measured at a temperature of polymerization of a molding material, and also configured to form a peripheral case of the mold assembly in which said first molding shell is able to be displaced relative to the second molding shell without affecting an intermediate portion (22) of the adhesive tape member which define said cavity, and a filling aperture formed in said adhesive tape member for introducing by casting said material into said cavity for forming the article.