Film molded article, film packaged body using the same, manufacturing method for film molded article and manufacturing method for film packaged body

Abstract

In a film molded article ( 1 ) of the present invention, a plurality of concave or convex embossed portions ( 3 ) disposed apart from each other are formed on a surface ( 2 a ) of a film ( 2 ), and the plurality of embossed portions ( 3 ) are disposed on the surface of the film ( 2 ) to form an enclosed region ( 4 ) surrounded by the plurality of embossed portions ( 3 ) and imaginary lines ( 4 a ) that connect the plurality of embossed portions ( 3 ).

1 . A film molded article in which a plurality of concave or convex embossed portions disposed apart from each other are formed on a surface of a film,
 wherein the plurality of embossed portions are disposed on the surface of the film such that an enclosed region surrounded by the plurality of embossed portions and imaginary lines that connect the plurality of embossed portions is formed.   
     
     
         2 . The film molded article according to  claim 1 ,
 wherein the embossed portion has a semicircular shape, a triangular shape, a U shape, a linear shape, a polygonal line shape, a curvilinear shape, a rectangular shape, a circular shape, or a point shape in plan view.   
     
     
         3 . The film molded article according to  claim 2 ,
 wherein the embossed portion has a U shape in plan view and a region surrounded by the U shape on the surface of the film is a concave shape or a convex shape.   
     
     
         4 . The film molded article according to  claim 1 ,
 wherein the embossed portion has a shape that changes in multiple stages in a thickness direction from the surface of the film.   
     
     
         5 . The film molded article according to  claim 1 ,
 wherein the film is made of a plastic material capable of adding a shape according to plastic deformation.   
     
     
         6 . The film molded article according to  claim 1 ,
 wherein the film is made of a heat-sealable laminate material.   
     
     
         7 . A film packaged body formed by superimposing a pair of the film molded articles according to  claim 1 ,
 wherein an object to be packaged is disposed in the enclosed region formed on the film molded article, the pair of the film molded articles are superimposed to cover the object to be packaged, and peripheral portions of the film molded articles are sealed.   
     
     
         8 . The film packaged body according to  claim 7 ,
 wherein the object to be packaged is a lithium ion secondary battery cell.   
     
     
         9 . A method of manufacturing a film molded article by which concave or convex embossed portions are formed on a surface of a film, comprising
 causing plastic deformation in the film by adding a shape to at least a part of the surface of the film using a mold, forming a plurality of the embossed portions to be disposed apart from each other on the surface of the film, and securing formation of an enclosed region surrounded by the plurality of embossed portions and imaginary lines that connect the plurality of embossed portions.   
     
     
         10 . The method of manufacturing a film molded article according to  claim 9 ,
 wherein the mold includes a punch and a die, and a tip portion in contact with the surface of the film in the punch is formed in a semicircular shape, a triangular shape, or a U shape in plan view, and   wherein a shape is added to the surface of the film using the mold, and thus a plurality of the embossed portions having a semicircular shape, a triangular shape, or a U shape in plan view are formed on the surface of the film.   
     
     
         11 . The method of manufacturing a film molded article according to  claim 9 ,
 wherein the mold includes a protrusion in contact with the surface of the film and the protrusion is formed in a U shape in plan view, and   wherein a shape is added to the surface of the film using the mold, and thus a plurality of the embossed portions having a U shape in plan view are formed on the surface of the film by forming a region surrounded by the U shape as a concave shape or a convex shape.   
     
     
         12 . A method of manufacturing a film packaged body by superimposing a pair of the film molded articles according to  claim 1 , comprising
 disposing an object to be packaged in the enclosed region formed in one film molded article between the pair of film molded articles,   subsequently, superimposing the other film molded article on the one film molded article while the object to be packaged is covered in the enclosed region formed in the other film molded article, and   subsequently, sealing peripheral portions of the pair of film molded articles.   
     
     
         13 . The method of manufacturing a film packaged body according to  claim 12 ,
 wherein a lithium ion secondary battery cell is used as the object to be packaged.   
     
     
         14 . A film packaged body obtained by the method according to  claim 12 .