Method for manufacturing aluminum roof molding using porous oxide layer

Abstract

Disclosed is a method of manufacturing an aluminum roof molding using porous oxide layer comprising; forming a porous oxide layer on a surface of the aluminum material by anodizing the aluminum material; a slitting the aluminum material on which the porous oxide layer is formed; roll forming the aluminum material to a shape of the roof molding; heating the roll formed aluminum material with a high frequency; and forming a PVC layer on the heated aluminum material and simultaneously extruding the aluminum material to bind the PVC layer to the aluminum material.

What is claimed is: 
     
         1 . A method for manufacturing an aluminum roof molding using a porous oxide layer, comprising:
 forming the porous oxide layer on a surface of an aluminum material by anodizing the aluminum material;   slitting the aluminum material on which the porous oxide layer is formed;   roll forming the aluminum material to a shape of the roof molding;   heating the roll formed aluminum material with a high frequency; and   forming a PVC layer on the heated aluminum material and simultaneously extruding the aluminum material to bind the PVC layer to the aluminum material.   
     
     
         2 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 1 , further comprising:
 bending the extruded aluminum material; and   assembling an end piece and a clip to the bent aluminum material.   
     
     
         3 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 1 , further comprising: heating the roll formed aluminum material with the high frequency at a temperature range of about 100 to 150° C. to facilitate the binding of the aluminum material with the PVC layer. 
     
     
         4 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 1 , wherein the extruding of the aluminum material further comprises: applying about 50 to 100 kgf/cm 2  of pressure. 
     
     
         5 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 1 , wherein the anodizing further comprises:
 degreasing the aluminum material;   etching the degreased aluminum material;   activating the etched aluminum material;   coating the activated aluminum material;   sealing the coated aluminum material; and   drying the sealed aluminum material.   
     
     
         6 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 5 , wherein activating the etched aluminum material further comprises: heating the etched aluminum material with the high frequency. 
     
     
         7 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 6 , wherein the high frequency heating is performed using about 200 to 300 kHz of alternative current frequency and about 100 to 200 V of voltage for about 1 to 3 minutes. 
     
     
         8 . The method for manufacturing an aluminum roof molding using porous oxide layer of  claim 5 , wherein the anodizing is performed using about 100 to 300 V of voltage and about 100 to 200 mA/cm 2  of current density. 
     
     
         9 . A method for manufacturing an aluminum roof molding using a porous oxide layer, comprising:
 forming the porous oxide layer on a surface of an aluminum material by anodizing the aluminum material;   in response to forming the porous oxide layer, slitting the aluminum material on which the porous oxide layer is formed;   in response to slitting the aluminum material, roll forming the aluminum material to a shape of the roof molding;   in response to roll forming the aluminum material, heating the roll formed aluminum material with a high frequency; and   in response to heating the roll formed aluminum material, forming a PVC layer on the heated aluminum material and simultaneously extruding the aluminum material to bind the PVC layer to the aluminum material.