公开(公告)号：US20210154957A1

公开(公告)日：2021-05-27

申请号：US16953600

申请日：2020-11-20

Applicant: Alcon Inc.

Inventor： Lindsay Olson ,  Mark Neely ,  David Saenz Landazabal ,  Uwe Haken

IPC: B29D11/00

Abstract: The invention provides a method producing contact lenses, comprising the step of: separating the mold into the male and female mold halves, with the silicone hydrogel contact lens adhered on one of the male and female mold halves; cooling the lens-adhere mold half with the molded silicone hydrogel contact lens adhered thereon; bringing a shaped ultrasonic horn in direct contact with at least one area of a non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon; and applying a ultrasonic vibrational energy to the at least one area of the non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon so as to separate the molded silicone hydrogel contact lens from the mold half attached thereon.

公开(公告)号：US12116442B2

公开(公告)日：2024-10-15

申请号：US17313459

申请日：2021-05-06

Applicant: Alcon Inc.

Inventor： Jing Cheng ,  Yang Zheng ,  Steve Yun Zhang ,  Lindsay Olson

IPC: C08F283/12 ,  C08J3/075

CPC classification number: C08F283/12 ,  C08J3/075 ,  C08J2383/10

Abstract: 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. The method of the invention involves using a silicone fluid (or so-called silicone oil) as non-reactive diluent in SiHy lens formulation for making SiHy contact lenses. Resultant SiHy contact lenses cast-molded from such a SiHy lens formulation can have a significantly reduced adhesion force with the molding surfaces of a lens mold and consequently a higher efficiency and consistency in removing unprocessed molded SiHy contact lenses from mold halves can be achieved. This method of the invention can be easily implemented in a production environment for enhancing the production yield.

公开(公告)号：US20210347929A1

公开(公告)日：2021-11-11

申请号：US17313459

申请日：2021-05-06

Applicant: Alcon Inc.

Inventor： Jing Cheng ,  Yang Zheng ,  Steve Yun Zhang ,  Lindsay Olson

IPC: C08F283/12 ,  C08J3/075

Abstract: 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. The method of the invention involves using a silicone fluid (or so-called silicone oil) as non-reactive diluent in SiHy lens formulation for making SiHy contact lenses. Resultant SiHy contact lenses cast-molded from such a SiHy lens formulation can have a significantly reduced adhesion force with the molding surfaces of a lens mold and consequently a higher efficiency and consistency in removing unprocessed molded SiHy contact lenses from mold halves can be achieved. This method of the invention can be easily implemented in a production environment for enhancing the production yield.

公开(公告)号：US11840033B2

公开(公告)日：2023-12-12

申请号：US16953600

申请日：2020-11-20

Applicant: Alcon Inc.

Inventor： Lindsay Olson ,  Mark Neely ,  David Saenz Landazabal ,  Uwe Haken

IPC: B29D11/00 ,  B29K83/00 ,  B29K105/00

CPC classification number: B29D11/00192 ,  B29D11/00201 ,  B29K2083/00 ,  B29K2105/0061

Abstract: The invention provides a method producing contact lenses, comprising the step of: separating the mold into the male and female mold halves, with the silicone hydrogel contact lens adhered on one of the male and female mold halves; cooling the lens-adhere mold half with the molded silicone hydrogel contact lens adhered thereon; bringing a shaped ultrasonic horn in direct contact with at least one area of a non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon; and applying a ultrasonic vibrational energy to the at least one area of the non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon so as to separate the molded silicone hydrogel contact lens from the mold half attached thereon.