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AssigneesMitsubishi Gas Chemical Company, Inc., Mgc Filsheet Co., Ltd.
InventorsRyuji YOSHIDA, Toshihiko TAKANO
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A protective film-attached functional sheet includes a protective film bonded to a functional sheet including aromatic polycarbonate sheets and a functional layer sandwiched between the aromatic polycarbonate sheets, the functional layer being a polyvinyl alcohol polarizing film layer, a photochromic layer, or a combination. The protective film is a polyolefin resin film that includes at least two layers: a base layer formed of a polypropylene having a melting point equal to or higher than a glass transition temperature of the aromatic polycarbonate and an adhesive layer on one surface of the base layer and being a resin composition containing a polyolefin rubber and a polyolefin having a melting point lower than the glass transition temperature but equal to or higher than 15° C. lower than the glass transition temperature; or at least three layers: the aforementioned two layers and an intermediate layer between the base layer and the adhesive layer.
A protective film-attached functional sheet comprising a functional sheet and a protective film bonded to the functional sheet, the functional sheet including aromatic polycarbonate sheets or films and a functional layer sandwiched between the aromatic polycarbonate sheets or films, the functional layer being a polyvinyl alcohol polarizing film layer, a photochromic layer, or a combination thereof, wherein the protective film is a polyolefin resin film that includes at least two layers which are a base layer formed of a polypropylene having a melting point equal to or higher than a glass transition temperature of the aromatic polycarbonate and an adhesive layer disposed on one surface of the base layer and being formed of a resin composition containing a polyolefin rubber and a polyolefin having a melting point lower than the glass transition temperature but equal to or higher than a temperature 15° C. lower than the glass transition temperature.
A method for producing a functional aromatic polycarbonate injection-molded lens, comprising preparing a protective film-attached functional sheet by bonding a protective film onto a functional sheet that includes aromatic polycarbonate sheets or films and a functional layer interposed between the aromatic polycarbonate sheets or films, the functional layer being selected from a polyvinyl alcohol polarizing film layer, a photochromic layer, and a combination thereof;
Dependencies are inferred from the claim text.