Textured polymeric films and articles comprising the same

Abstract

Disclosed herein is a textured film formed by a method comprising deforming an organic polymer composition at a temperature below a glass transition temperature of an organic polymer in the organic polymer composition; the deforming being conducted by an application of a shear force, an elongational force, a compressive force, or a combination comprising at least one of the foregoing forces; the forces being applied to the organic polymer composition as it is disposed between a first roll that comprises a rubber surface and a second roll that comprises a textured metal surface; the deforming producing a textured film having a ratio of texturing of about 0.5 to about 3; the textured film having a thickness of about 5 to about 75 micrometers and an average roughness of about 0.3 to about 6 micrometers on opposing surfaces of the film.

1 . A textured film manufactured by a method comprising:
 deforming an organic polymer composition; the deforming being conducted by an application of a shear force, an elongational force, a compressive force, or a combination comprising at least one of the foregoing forces; the forces being applied to the organic polymer composition as it is disposed between a first roll that comprises a rubber surface and a second roll that comprises a textured metal surface; the textured film having a thickness of about 5 to about 75 micrometers and an average roughness of about 0.3 to about 6 micrometers on opposing surfaces of the textured film; wherein the organic polymer composition enters a gap between the first roll and the second roll at below a glass transition temperature of an organic polymer in the organic polymer composition.   
     
     
         2 . The textured film of  claim 1 , wherein the textured film has an average roughness of about 0.3 to about 6 micrometers; wherein the surface average roughness on one surface of the textured film is within about 25% of the surface average roughness on an opposing surface of the textured film. 
     
     
         3 . The textured film of  claim 1 , wherein the textured film is manufactured from an organic polymer composition that comprises polyolefins, polyacetals, polyacrylics, polycarbonates, polystyrenes, polyesters, polyamides, polyamideimides, polyarylates, polyarylsulfones, polyethersulfones, polyphenylene sulfides, polyvinyl chlorides, polysulfones, polyimides, polyetherimides, polytetrafluoroethylenes, polyetherketones, polyether etherketones, polyether ketone ketones, polybenzoxazoles, polybenzimidazoles, polypyrrolidines, polyvinyl ethers, polyvinyl thioethers, polyvinyl alcohols, polyvinyl ketones, polyvinyl halides, polyvinyl nitriles, polyvinyl esters, polysulfonates, polysulfides, polythioesters, polysulfones, polysulfonamides, polyureas, polyurethanes, polyphosphazenes, polysilazanes, polysiloxanes, or a combination comprising at least one of the foregoing organic polymers. 
     
     
         4 . The textured film of  claim 1 , wherein the textured film is manufactured from an organic polymer composition that comprises polyetherimides. 
     
     
         5 . The textured film of  claim 1 , comprising an organic polymer composition that has a glass transition temperature of greater than or equal to about 100° C. or a yield point strain of less than or equal to about 10%, when tested as per ASTM D 638. 
     
     
         6 . The textured film of  claim 1 , wherein the textured film is a multilayered film. 
     
     
         7 . The textured film of  claim 1 , comprising about 50% less visible defects than a film that has only one textured surface. 
     
     
         8 . The textured film of  claim 1 , wherein the textured film is opaque. 
     
     
         9 . The textured film of  claim 1 , wherein the textured film is optically transparent. 
     
     
         10 . The textured film of  claim 1 , wherein the textured film is translucent. 
     
     
         11 . The textured film of  claim 1 , wherein the textured film has a ratio of texturing of 0.75 to 3.0. 
     
     
         12 . The textured film of  claim 1 , wherein the ratio of texturing is 1.0 to 2.0. 
     
     
         13 . The textured film of  claim 1 , wherein the textured film has a thickness of about 5 to about 50 micrometers. 
     
     
         14 . A roll comprising the textured film of  claim 1 . 
     
     
         15 . A textured film formed by the method comprising:
 extruding an organic polymer composition to calendaring rolls comprising a first roll that comprises a rubber surface and a second roll that comprises a textured metal surface; and   thermoforming the organic polymer composition, the thermoforming being conducted by an application of a shear force, an elongational force, a compressive force, or a combination comprising at least one of the foregoing forces; the forces being applied to the organic polymer composition as it is disposed between the calendaring rolls; the thermoforming producing a textured film having a rubber side replication efficiency of greater than or equal to 100%; the textured film having a thickness of about 5 to about 50 micrometers.   
     
     
         16 . The textured film of  claim 15 , wherein the textured film has a thickness of about 5 to about 37.5 micrometers.