System and method for recycling organic-inorganic composite sheet

Abstract

A system and method for recycling a workpiece comprises an electrolytic etching assembly for etching a metal layer of the workpiece. The electrolytic etching assembly has an electroetching unit, a working stage, a power supply and an electrolyte source supply. The electroetching unit has an anode, a cathode next to the anode and an insulting covering, wherein the cathode and the anode are separated by the insulting covering which covers the anode. The working stage is provided for carrying the workpiece so as to allow the metal layer to face the anode and the cathode. The power supply has a positive electrode connected with the anode of the electroetching unit, and a negative electrode connected with the cathode. In addition, the electrolyte source supply is communicated with the insulting covering of the electroetching unit, and pours an electrolyte solution onto the anode and thereafter impinging upon the workpiece and passing through a passage defined by the workpiece and the anode.

1 . A recycling system comprising: 
 an electrolytic etching assembly for etching a metal layer of a workpiece having:    an electroetching unit having an anode, a cathode and an insulting covering, wherein the cathode and the anode are separated by the insulting covering which covers the anode;    a working stage provided for carrying the workpiece so as to allow the metal layer to face the anode and the cathode;    a power supply, having a positive electrode connected with the anode of the electroetching unit, and a negative electrode connected with the cathode; and    an electrolyte source supply, communicated with the insulting covering of the electroetching unit, and pouring an electrolyte solution onto the anode and thereafter impinging upon the workpiece and passing through a passage defined by the workpiece and the anode.    
     
     
         2 . The recycling system of  claim 1 , wherein the anode of the electroetching unit is made of an insert electrode material.  
     
     
         3 . The recycling system of  claim 2 , wherein the anode of the electroetching unit is capable of rotation.  
     
     
         4 . The recycling system of  claim 1 , wherein either the electroetching unit or the working stage can move relative to each other.  
     
     
         5 . The recycling system of  claim 4 , wherein the electroetching unit further having a metallic member disposed near an end of the insulting covering and adjacent to the working stage.  
     
     
         6 . The recycling system of  claim 4 , wherein the electroetching unit further having a movable metallic part which has an end disposed near an end of the insulting covering and adjacent to the working stage, and another end extended inward of the insulating covering and adjacent to the anode, and is movable to simultaneously either contact with the workpiece and the anode or depart from the workpiece and the anode.  
     
     
         7 . The recycling system of  claim 1 , wherein the anode of the electroetching unit is shaped as a rod; and the cathode is shaped as a plate.  
     
     
         8 . The recycling system of  claim 1 , wherein the cathode of the electroetching unit has a larger exposed area facing toward the workpiece than that of the anode.  
     
     
         9 . The recycling system of  claim 8 , wherein the anode of the electroetching unit has a plurality of electrode rods arranged as an array, each having an end pointing toward the workpiece, thereby the electroetching unit can intensively etch a specific projective area of the workpiece, onto where the plurality of electrode rods project.  
     
     
         10 . The recycling system of  claim 9 , wherein the array of the plurality of electrodes is arranged as a visual pattern so as to transfer the visual pattern unto the specific projective area of the workpiece via electroetching.  
     
     
         11 . The recycling system of  claim 1 , further comprising a selective smelter capable of melting and separating a first metal from electroplated metals deposited on a side of the cathode of the electroetching unit.  
     
     
         12 . The recycling system of  claim 1 , further comprising an electroplating assembly capable of applying a specific bias voltage to educe a second metal from the electrolyte solution coming of the electrolytic etching assembly.  
     
     
         13 . The recycling system of  claim 12 , wherein the electroplating assembly has a plurality of electrodes so as to apply different bias voltages to generate different electroplated metals.  
     
     
         14 . The recycling system of  claim 12 , further comprising a refining furnace for purifying the second metals.  
     
     
         15 . The recycling system of  claim 1 , further comprising a chemical stripping assembly for stripping an organic layer of the workpiece.  
     
     
         16 . The recycling system of  claim 15 , further comprising an ozone generator for decomposing organic waste generated from the chemical stripping assembly.  
     
     
         17 . A method for recycling a workpiece of an organic-inorganic composite sheet comprising steps of: 
 electroetching a metal layer of the workpiece; and    chemically stripping an organic layer of the workpiece.    
     
     
         18 . The method of  claim 17 , further comprising steps of: 
 collecting an electrolyte solution generated by electroetching;    electroplating a first metal from the electrolyte solution;    collecting electroplated metals generated by electroetching; and    smelting the electroplated metals to separate a second metal from the electroplated metals.    
     
     
         19 . The method of  claim 18 , further comprising steps of refining the first metal and the second metal.  
     
     
         20 . The method of  claim 17 , further comprising a step of applying ozone to decompose organic waste generated by the chemical stripping.