The invention provides a contact lens manufacturing method comprising a process for removing unprocessed molded silicone hydrogel contact lenses from mold halves in a relatively efficient and consistent manner. A method of the invention comprises the combination of using a hydrophilic (meth)acrylamido monomer as one of major polymerizable components in a lens formulation for cast-molding of contact lenses, adding a post-curing treatment step which involves heating molds with molded lenses therewithin in an oven at a post-curing temperature higher than the curing temperature and under nitrogen gas flow at a higher flow rate, and using ultrasonic vibration energy for delensing. This method of the invention can be easily implemented in a production environment for enhancing the production yield.
本发明提供了一种隐形眼镜制造方法,包括一种以相对高效和一致的方式从半模中取出未加工的模制
硅水凝胶隐形眼镜的工艺。本发明的方法包括以下组合:使用亲
水性(甲基)
丙烯酰胺单体作为镜片配方中的主要可聚合成分之一,用于隐形眼镜的浇铸成型;添加后固化处理步骤,包括在后固化温度高于固化温度的烘箱中,并在较高流速的氮气流下加热装有模塑镜片的模具;以及使用超声波振动能量进行脱膜。本发明的方法可在生产环境中轻松实施,以提高产量。