POLYESTER FILM AND METHOD FOR PRODUCING THE SAME

    公开(公告)号:US20210053267A1

    公开(公告)日:2021-02-25

    申请号:US16839452

    申请日:2020-04-03

    Abstract: A polyester film and a method for producing the same are provided. The polyester film includes a heat resistant layer. The heat resistant layer includes a high temperature resistant resin material and a polyester resin material. The high temperature resistant resin material and the polyester resin material are melted and kneaded with each other via a twin screw granulator. The twin-screw granulator has a twin-screw temperature between 250° C. and 320° C., and the twin-screw granulator has a twin-screw rotation speed between 300 rpm and 800 rpm, so that the high temperature resistant resin material is dispersed in the polyester resin material with a particle size of between 50 nm and 200 nm.

    MATTE FILM FOR HOT PRESSING AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20210252768A1

    公开(公告)日:2021-08-19

    申请号:US17012204

    申请日:2020-09-04

    Abstract: A matte film for hot pressing and a manufacturing method thereof are provided. The manufacturing method includes steps of forming at least one polyester composition into an unstretched polyester thick film and stretching the unstretched polyester thick film in a machine direction (MD) and a transverse direction (TD). The polyester composition includes 81% to 97.9497% by weight of a polyester resin, 0.02% to 2% by weight of an antioxidative ingredient, 0.0003% to 1% by weight of a nucleating agent, 0.01% to 2% by weight of a flow aid, 0.01% to 2% by weight of a polyol ester based polyester modifier, 0.01% to 2% by weight of an inorganic polyester modifier, and 2% to 10% by weight of silica particles. The polyester resin has an intrinsic viscosity between 0.60 dl/g and 0.80 dl/g.

Patent Agency Ranking