Ophthalmic lens molds made from at least one vinyl alcohol copolymers with high amorphous content, ophthalmic lenses including silicone hydrogel contact lenses formed using these molds, packaged ophthalmic lenses present in a solution comprising the at least one vinyl alcohol copolymer with high amorphous content, and related methods are described. The methods of manufacturing ophthalmic lenses can use wet demolding, delensing or demolding and delensing processes involving dissolving the molds in water or an aqueous solution.

Ophthalmic lens molds made from at least one vinyl alcohol copolymers with high amorphous content, ophthalmic lenses including silicone hydrogel contact lenses formed using these molds, packaged ophthalmic lenses present in a solution comprising the at least one vinyl alcohol copolymer with high amorphous content, and related methods are described. The methods of manufacturing ophthalmic lenses can use wet demolding, delensing or demolding and delensing processes involving dissolving the molds in water or an aqueous solution.

A polypropylene film includes a surface layer (I) with polypropylene as a main component at least on one face of a base layer. Surface free energy of the surface layer (I) is 15 mN/m or more and less than 28 mN/m. A mold release film includes a polypropylene film including a surface layer (I) with polypropylene as a main component at least on one face of a base layer, wherein surface free energy of the surface layer (I) is 15 mN/m or more and less than 28 mN/M.

Ophthalmic device molds made from at least one highly amorphous vinyl alcohol polymer, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, and related methods are described. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes.

Ophthalmic device molds made from at least one vinyl alcohol copolymer and having a static sessile drop contact angle of less than 70 degrees, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, and related methods are described. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes.

Ophthalmic device molds made from at least one water-soluble vinyl alcohol copolymer, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, packaged ophthalmic devices present in a solution comprising the at least one water-soluble vinyl alcohol copolymer, and related methods are described. The methods of manufacturing ophthalmic devices can use wet demolding processes, or wet delensing processes or both wet demolding and wet delensing processes involving dissolving the molds in water or an aqueous solution.

A resin molded member having excellent surface scratch resistance and various properties required for a resin molded member is disclosed. The resin molded member according to the present invention comprises a crystalline resin, and the crystallinity of the outermost layer of the member is 50% or more, and the crystallinity of the outermost layer is maintained up to a depth of at least 9.0 m from the outermost layer, i.e., the outermost surface of the member. The resin molded member has excellent performance such as durability, strength, and dimensional retention in addition to scratch resistance, and can be preferably used as a so-called water-related device member.

High-frequency welding method for welding an accessory to a substrate by high-frequency welding machinery which includes a female mold, having a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, having a relief formed by a profile having substantially the same shape and dimensions as the accessory. The method includes: mounting the female mold on a movable upper plate of the machinery and the male mold on a fixed lower plate of the machinery, or vice versa, such that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief. The method further includes: positioning the accessory on the relief or in the cavity; positioning the substrate above the accessory; moving the upper plate towards the lower plate; supplying high-frequency welding energy to the upper plate and/or to the lower plate.

High-frequency welding method for welding an accessory to a substrate by high-frequency welding machinery which includes a female mold, having a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, having a relief formed by a profile having substantially the same shape and dimensions as the accessory. The method includes: mounting the female mold on a movable upper plate of the machinery and the male mold on a fixed lower plate of the machinery, or vice versa, such that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief. The method further includes: positioning the accessory on the relief or in the cavity; positioning the substrate above the accessory; moving the upper plate towards the lower plate; supplying high-frequency welding energy to the upper plate and/or to the lower plate.