Abstract:
Provided is a method of designing a device, comprising the steps of determining a disposing process for each component of the device, the disposing process being selectable from a melting process, a shredding process and a renovating process, and designing a connecting part for joining two of the components of the device that would be determined to be disposed by different disposing processes in the determining step so as to be easily separated from each other. Thereby, the amount of work for dismantling the device and separating the components can be substantially reduced, and the component parts can be disposed simultaneously in most part.

Description:
TECHNICAL FIELD 
   The present invention relates to a method of designing devices, and in particular to a method of designing devices that allows the material thereof to be recycled in a favorable fashion. 
   BACKGROUND OF THE INVENTION 
   Japanese patent laid open (kokai) publication No. 11-348855 discloses a method of recycling discarded automobiles by transporting each automobile with a loop-type carrier suspended from a hanger, removing components from the automobile while the automobile is transported among different work stations at low speed, sorting the components into those that can be recycled and those that cannot be recycled, storing them in corresponding bins, and pressing and shredding those that cannot be recycled. 
   However, considerations for recycling are mostly absent in the presently adopted vehicle structures. For instance, components are often made by inseparably combining different materials such as metallic material and plastic material. Therefore, when disposing an automobile, the weight of the waste material that cannot be recycled and is required to be disposed of by landfill or the like typically amounts to about 25% of that of the automobile itself. 
   The method proposed in the aforementioned Japanese patent publication is no more than an introduction of a flow process into the work of disassembling discarded automobiles in place of pure manual work, and failed to meet the social need to more efficiently utilize resources and reduce waste material. 
   BRIEF SUMMARY OF THE INVENTION 
   In view of such problems of the prior art, a primary object of the present invention is to provide a method of designing devices that allows larger parts of the components to be recycled as useful resources. 
   To achieve such an object, the present invention provides a method of designing a device, comprising the steps of: determining a disposing process for each component of the device, the disposing process being selectable from a melting process, a shredding process and a renovating process; and designing a connecting part for joining two of the components of the device that would be determined to be disposed by different disposing processes in the determining step so as to allow them to be easily separated from each other. Thereby, the amount of work for dismantling the device and separating and sorting the components can be substantially reduced, and the component parts can be disposed simultaneously in most part. 
   It is desirable if the method further comprises the step of forming a module with a plurality of components so as to allow the components to be removed from the vehicle body simultaneously as a single module. Thereby, the small components are not required to be removed from narrow spaces in the engine room or the like, and the work efficiency of dismantling the device is improved. 
   It is preferable if the method comprises the step of selecting the material for individual components such that a component or components that are to be disposed jointly consist of a single material. For instance, because an automotive floor mat conventionally consisted of a polyester surface skin and a PVC back lining which cannot be easily separated from each other, the floor mat was required to be disposed as wholly waste material. However, if these two parts are made of a same material, it becomes easier to recycle the floor mat as a useful resource. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Now the present invention is described in the following with respect to an application to the disposal of automobiles that cover a wide range of industrial technologies, including mechanical, electric and electronic technologies, with reference to the appended drawings, in which: 
       FIG. 1  is a block diagram showing the step of determining the disposal process; 
       FIG. 2  is a perspective view of an engine module; 
       FIG. 3  is a sectional side view showing the relationship between the engine module and vehicle body; 
       FIG. 4  is a side view showing the relationship between the door module and door as seen from inside the passenger compartment; 
       FIG. 5  is a perspective view, partly seen through, showing the relationship between the instrument panel and vehicle body; 
       FIG. 6  is a layout view of the lock device arrangement for the instrument panel; 
       FIG. 7  is a view showing the structure of the lock device for the instrument panel; 
       FIG. 8  is a perspective view, partly seen through, showing the instrument panel and related parts; 
       FIG. 9  is a side view of the lock device for the instrument panel and related parts; 
       FIG. 10  is a fragmentary side view of the lock device for the instrument panel and related parts; 
       FIG. 11  is a side view of the lock device for the control panel and related parts; 
       FIG. 12  is a fragmentary plan view of the lock device for the control panel and related parts; 
       FIG. 13  is an overall perspective view of the floor mat; 
       FIG. 14  is a fragmentary sectional view taken along line XIV—XIV of  FIG. 13 ; 
       FIG. 15  is a fragmentary sectional view taken along line XV—XV; 
       FIG. 16  is a fragmentary sectional view taken along line XVI—XVI; 
       FIG. 17  is a fragmentary sectional view of part XVII; 
       FIG. 18  is a fragmentary sectional view of part XVIII; 
       FIG. 19  is a fragmentary perspective view of the floor mat; 
       FIG. 20  is a block diagram for the engine module; 
       FIG. 21  is a block diagram for the door module; and 
       FIG. 22  is a block diagram for the instrument panel. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   In the first step of the design method according to the present invention, it is determined how each component part of the device consisting of an automobile in this case should be processed. The components essentially made of metallic material are assigned to a melting process  1  and heated and melted so as to be separated into aluminum, iron and residues. The components essentially made of plastic material and thin pieces of metal are assigned to a shredding process  2  and shredded into chips so as to be separated into metallic parts and non-metallic parts. The components that are provided with individual functions and can be repaired are assigned to a renovation process  3  and overhauled or otherwise renovated by parts manufacturers. (the processing method determining step.) 
   Components such as engines  4 , transmissions  5 , wheel suspension systems  6  and vehicle bodies  7  that are made of metallic material and destined for the melting process  1  are brought together as a group. Components such as instrument panels  8 , seats  9 , linings  10 , floor mats  11  and bumpers  12  are brought together as another group. Electric equipment  13 , audio units  14  and meters  15  that are destined for the renovation process  3  are brought together as yet another group. See  FIG. 1 . 
   In the second step, the connecting parts that connect various parts to the vehicle body or to each other are constructed so as to be easily broken apart. (the easily separable structure designing step). 
   For instance, the instrument panel  8  may be adapted to retain the audio unit  14 , the control unit for the air conditioner and various meters  15  each provided with a lock device using a suitable snap fit arrangement that can be readily released. The instrument panel  8  may be adapted to be readily detached from the vehicle body  7  by using a lock mechanism that uses an eccentric cam. 
   The floor mat  11  may be provided with a readily breakable part extending through the parts joining the seat  9  to the vehicle body  7  so that the floor mat  11  may be removed from the vehicle body  7  by tearing apart the readily breakable parts without requiring the seats to be removed. 
   The electric components are adapted for flat harnesses and quick couplers so that the cables may be detached without any difficulty. 
   In the third step, various components are given with a modular structure using a common member for supporting a plurality of components so that the various components may be removed from the vehicle body as a single group and, thereafter, separated into individual components outside the vehicle body. (the modular structure design step.) 
   For instance, the engine and related units may be formed as an engine module  21  as illustrated in  FIGS. 2 and 3 . More specifically, the engine  4  and related units such as the transmission  5 , wheel suspension systems  6  and radiator  23  are attached to the vehicle body  7  via a front sub frame  22  forming a part of the vehicle body  7  and attached to the vehicle body  7  by using fastening means suited for repeated use, such as threaded bolts/nuts  24 , so that the engine  4  and related units may be removed from the vehicle body  7  simply by separating the front sub frame  22  from the vehicle body  7 . 
   The doors may also be formed as door modules as illustrated in  FIG. 4 . More specifically, the side glass pane  33  and the wind regulator motor  38  are attached to a module frame  32  made of aluminum alloy or the like so that the components that cannot be processed together with the vehicle body  7  can be removed from the door  39  simply by removing the door lining  10  and detaching the module frame  32  from the door  39 . 
   Additionally, as opposed to the conventional practice to construct each component by combining a plurality of different materials without any special considerations, each component is made of a single material as much as possible. (the material selecting step). 
   For instance, because the conventional floor mat consisted of a back lining made of coarse cotton felt and a surface skin layer made of PET non-woven fabric, it could not be simply removed from the vehicle and turned into pellets. According to the present invention, the back lining and surface skin layer are both made of olefin based material (mono-material) so that the removed floor mat can be readily converted into pellets. 
   Also, a plurality of components that are made of a same material and/or that are to be processed together are integrally formed with each other. For instance, the cooling water sub tank and window washer fluid tank may be integrally molded with the radiator fan shroud, and the casing for the electronic control unit may be integrally formed with the air cleaner case. 
   The present invention is now described with respect to specific embodiments with reference to the appended drawings. 
   Referring to  FIGS. 2 and 3 , the engine module  21  includes a front sub frame  22  forming a part of the vehicle body  7  and supporting the engine main body  4 , transmission  5 , wheel suspension system  6  and radiator  23 . The front sub frame  22  is fixedly attached to the vehicle body  7  by using threaded bolts/nuts  24  so that the engine main body  4  and related units can be removed from the vehicle body  7  all at the same time simply by detaching the front sub frame  22  from the vehicle body  7 . As a result, the dismantling of the engine and related units can be conducted outside the engine room, and this facilitates the removable of electric units  13  such as the alternator, starter motor and wire harnesses and non-metallic components such as an air cleaner  25 , washer fluid tank  26  and rubber hoses  27  from the engine main body  4 . 
   Referring to  FIG. 4 , the door module  31  comprises a module frame  32  consisting of a first frame member  32   a  and a second frame member  32   b  which extend substantially linearly in the fore-and-aft direction parallel to each other as seen from the side, and a substantially U-shaped third frame member  32   c  which are integrally joined to each other by welding. These frame members are, for instance, made of continuously extruded aluminum alloy. The first and second frame members  32   a  and  32   b  are formed by cutting a continuously extruded member into prescribed lengths and the third frame member  32   c  is formed by bending a linear extruded member. 
   The module frame  32  is provided with guide members  34   a  and  34   b  for guiding the front and rear edges of the side glass pane  33 , a support member  35  supporting the lower edge of the side glass pane  33 , lock means  37  for locking the door with respect to the vehicle body  7  and a window regulator motor  38 . 
   The door  39  forming a part of the vehicle body  7  and having the module frame  32  fixedly attached thereto comprises a door inner panel  39   a  and a door outer panel  39   b  which are joined to each other by welding. A window frame  39   c  for supporting the side glass pane  33  in its fully closed state is fixedly attached to an upper part of the door  39 . The door  39  is provided with a receiving portion  40  between the inner and outer panels  39   a  and  39   b  for receiving the side glass pane  33  therein, and the inner panel  39   a  is provided with an opening  41  for introducing the side glass pane  33  attached to the door module  31  into the receiving portion  40 . 
   The door module  31  and door  39  are attached to each other by registering mounting holes  42  formed in the door module  31  and mounting holes  43  formed in the door inner panel  39   a  to each other and passing plastic clip fasteners (not shown in the drawing) through these mounting holes  42  and  43 . 
   Thus, the door  39  and door module  31  can be readily separated from each other simply by removing the lining  10  (not shown in the drawing) and unfastening the clip fasteners. Once the door module  31  is separated from the door  39 , the various components and accessory units such as the side glass pane  33  and window regulator motor  38  can be removed from the door  39  all at the same time, individually and without requiring the worker to take any uncomfortable posture. 
   Referring to  FIG. 5 , the instrument panel  8  is placed on the vehicle body  7  above the dashboard  51 . Opposite to the upper surface of the dashboard  51  is provided a front beam  52  that extends between the inner surfaces of front side panel inners (not shown in the drawing). To the front beam  52  are fixedly secured an instrument panel support bracket  53 , a control panel support bracket  54 , an air conditioner duct  55  and an air bag system  56  for the passenger seat. The front side panel inners connected to either lateral ends of the front beam  52  are provided with connecting brackets  57  which are in turn provided with lock mechanisms  58  for fixedly securing the instrument panel  8 . The control panel support bracket  54  fixedly attached to a middle part of the front beam  52  is provided with an operation handle  59  for actuating the lock mechanisms  58 . The operation handle  59  is connected to each lock mechanism  58  via a Bowden cable  60  serving as a member for transmitting force. 
   A plurality of locator pins  61  are provided in suitable parts of the upper part of the dashboard  51  and members attached to the front beam  52  for positioning the instrument panel  8 . 
   After the instrument panel  8  is removed, those members that are integral with the vehicle body  7  are subjected to the melting process together with the vehicle body 
   The instrument panel  8  is entirely made of an integrally molded single-piece member, and is provided with a mounting opening  62  for a meter panel on the right hand side thereof and another mounting opening  63  for an audio unit  14  and a control panel for the air conditioner in the middle part thereof. The back side of the instrument panel  8  that opposes the dashboard  51  is provided with bosses  65  each formed with a hole for receiving the corresponding locator pin  61 . 
   Referring to  FIGS. 6 and 7 , each lock mechanism  58  consists of a holder  66  fixedly attached to the corresponding end of the front beam  52  and a latch  67  received in the holder  66  so as to be slidable laterally with respect to the vehicle body. The operating handle  59  is incorporated with a rotation/linear motion converting mechanism  68  using an eccentric cam or the like. By turning the operating handle  59 , the Bowden cable  60  extending from each side of the rotation/linear motion converting mechanism  68  is actuated in both pushing and pulling directions according to the rotational direction of the operation handle  59 , and the transmitted force causes the front end of the latch  67  to project out of and retract into the holder  66 . 
   When installing the instrument panel  8  constructed as described above onto the dashboard  51  (vehicle body  7 ), with the operation handle  59  turned to the locking position, the dashboard  51  is pushed against the instrument panel  8 . This causes the locating pins  61  provided on the dashboard  51  to fit into the holes of the bosses  65  provided on the back side of the instrument panel  8 , and the instrument panel  8  is properly positioned with respect to the dashboard  51 . 
   As the instrument panel  8  is pushed even further, edges of receiving portions  69  provided on the back side of the instrument panel  8  push the tapered front ends of the latches  67 , thereby causing the latches  67  to retract. Once the front ends of the latches  67  are received in the receiving portions  69 , the latches  67  are prevented from retracting and the locked state is maintained unless the operating handle  59  is turned in the unlocking direction and the Bowden cables  60  are pulled. 
   Once the instrument panel  8  is fixedly attached to the dashboard  51 , the central mounting opening  63  for gaining access to the operating handle  59  is closed by the audio unit  14  or the like in its installed state. Therefore, the unlocking operation is not possible under normal condition. 
   Referring to  FIG. 8 , when the instrument panel  8  is fixedly attached to the dashboard  51 , the control panel support bracket  54  and meter panel support bracket  53  are located inside the mounting hole  62  formed on the right hand side of the instrument panel  8  and the mounting hole  63  formed in the middle part of the instrument panel  8 , respectively. 
   The meter panel support bracket  53  comprises a front wall  53   a  on the front side with respect to the vehicle body and a pair of side walls  53   b . The middle part of the front wall  53   a  is provided with a striker opening  71  for engaging a latch mechanism which is described hereinafter and a connector  72  for connecting signal lines, one above the other. To the inner side of each side wall  53   b  is fixedly attached a guide member  74  provided with a groove  73  extending in the fore-and-aft direction. 
   The meter panel  75  comprises a liquid crystal display  75   a , a cover  75   b  and a frame  76 . To either side of the frame  76  are fixedly attached a pair of key members  77  extending in the fore-and-aft direction so as to correspond to the grooves  73  of the guide members  74  provided in the support bracket  53 . The upper surface of the frame  76  is provided with a latch mechanism  78  which is adapted to engage the striker opening  71  provided in the support bracket  53 . 
   Referring to  FIGS. 9 and 10 , the latch mechanism  78  of the meter panel is provided with a lever member  79  having an intermediate part thereof pivotally supported by a laterally extending shaft so as to be tiltable like a see-saw. The front end of the lever member  79  is provided with a claw  80  adapted to fit into and engaged by the striker opening  71 , and the rear end of the lever member  79  is provided with an operation knob  81 . The lever member  79  is normally urged by a torsion coil spring or the like in the direction to raise the end of the operation knob  81  or in the direction to engage the claw  80  with the striker opening  71 . 
   The control panel support bracket  54  comprises a front wall  54   a  on the front side with respect to the vehicle body and a pair of side walls  54   b . The middle part of the front wall  54   a  is provided with a connector  82  for connecting signal lines. To the inner side of each side wall  54   b  is fixedly attached a guide member  84  provided with a groove  83  extending in the fore-and-aft direction and a striker member  86  having a striker opening  85  formed therein, one above the other. 
   The control panel  87  comprises a liquid crystal display  87   a , a cover  87   b  and a frame  88 . To either side of the frame  88  are fixedly attached a pair of key members  89  extending in the fore-and-aft direction so as to correspond to the groove  83  of the guide member  84  provided in the support bracket  54 . The upper part of the frame  88  is provided with a latch mechanism  90  on each side thereof which is adapted to engage a striker opening  85  of a striker member  86  provided in the corresponding side of the support bracket  53 . 
   Referring to  FIGS. 11 and 12 , the latch mechanism  90  of the control panel  87  is provided with a lever member  91  having an intermediate part thereof pivotally supported by a laterally extending shaft so as to be tiltable. The front end of the lever member  91  is provided with a claw  92  adapted to be engaged by the striker opening  85 , and the rear end of the lever member  91  is provided with an operation knob  93 . The lever member  93  is normally urged by a torsion coil spring or the like in the direction to urge the end of the operation knob  93  outward or in the direction to engage the claw  92  with the striker opening  85 . 
   The meter panel  75  and control panel  87  are attached to the corresponding support brackets  53  and  54  both from outside the instrument panel  8 . When mounting each of these panels on the corresponding support bracket  53  or  54 , the front end of the key member  77  or  89  is aligned with the rear end of the groove  73  or  83  of the corresponding guide member  74  or  84 , and is then pushed forward until the claw  80  or  92  of the lever member  79  or  91  fits into the corresponding striker opening  71  or  85 . Because the lever member  79  or  91  is biased by the spring, the claw  80  or  92  is engaged by the peripheral edge of the striker opening  71  or  85  so that the meter panel  75  or the control panel  87 , as the case may be, is fixedly attached to the corresponding support bracket  53  or  54 . At the same time, the plug (not shown in the drawing) provided on the backside of each of the meter panel  75  and control panel  87  fits into the corresponding connector  72  or  82  so that the required electric connection is established. 
   When removing the meter panel  75  or the control panel  87  from the corresponding bracket  63  or  54 , the operation knob  81  or  93  of the corresponding lever member  79  or  91  urged in the locking direction is pushed downward in the case of the meter panel  75  or inward in the case of the control panel  87  so that the claw  80  or  92  is disengaged from the corresponding striker opening  71  or  85  and the meter panel  75  or the control panel  87 , as the case may be, is allowed to be pulled rearward in this state. 
   An embodiment related to the floor mat  11  is described in the following with reference to  FIGS. 13 to 19 . The floor mat  11  is contoured so as to conform to the irregular shape of the vehicle body floor not shown in the drawing, and is provided with fastener receiving holes  101  for securing the floor mat  11  to the vehicle body floor with plastic fasteners and threaded bolt receiving holes  102  for passing threaded bolts for securing the seats  9  (only one of the front seats is shown in the drawing) to the floor. 
   Referring to  FIG. 14 , stud bolts  103  are fixedly attached to the vehicle body floor  7   f . The front part of the floor mat  11  is positioned with respect to the vehicle body floor  7   f  by passing these stud bolts  103  through the fastener receiving holes  101  in the front part of the floor mart  11 . A plastic flanged cap  104  or the like is fitted onto each of the stud bolts  103 . The front part of the floor mat  11  is therefore interposed between the flanges  104   a  of the flanged caps  104  and the vehicle body floor  7   f  and the screw thread of each stud bolt  103  engages the inner circumferential surface of the corresponding flanged cap  104  so that the front part of the floor mat  11  is fixedly secured to the vehicle body floor  7   f.    
   Referring to  FIG. 15 , the rear part of the floor mat  11  is fixedly attached to the vehicle body floor  7   f  by passing a leg portion  105   b  of a plastic clip  105  having an enlarged head  105   a  through each of the fastener receiving holes  101  and resiliently forcing it into a corresponding through hole  106  provided in the vehicle body floor  7   f.    
   Referring to  FIG. 16 , each side fringe of the floor mat  11  is contoured so as to conform to the cross sectional shape of the passenger compartment side of the corresponding side sill  107 , and is retained thereat by engaging hooks  108  tacked to the upper end of an upright portion of the floor mat  11  with mating flanges  107   a  extending upright from the upper end of the side sill  107 . The part of the floor mat  11  thus engaged to the side sill  107  is covered by a plastic garnish  109 . 
   Referring to  FIGS. 17 and 18 , front and rear parts of each of the seats  9  (front seats) are attached to the vehicle body floor  7   f  via seat rails  110 . Each seat rail  110  is fixedly attached to the bottom surface of the corresponding seat  9  in such a manner that a front bracket  111  provided in the front end thereof is fixedly attached to a cross member  112  integrally formed with the vehicle body floor  7   f  with threaded bolts  113 , and a rear bracket  114  formed in the rear end thereof is fixedly attached to the vehicle body floor  7   f  with threaded bolts  113 . 
   The mounting positions of the threaded bolts  113  for attaching the brackets to the cross member  112  of the vehicle body  7   f  are arranged along a straight line extending laterally across the vehicle body. The threaded bolt receiving holes  102  formed in the floor mat  11  are located so as to correspond to the threaded bolts  113  for attaching the brackets. Thus, these threaded bolt receiving holes  102  are also arranged along the same straight line L extending laterally across the vehicle body. 
   Referring to  FIG. 19 , a plurality of slots  114  each having a prescribed length are arranged along the straight line L on which the threaded bolt receiving holes  102  of the floor mat  111  are formed. The threaded bolt receiving holes  102  and adjoining slots  114  are arranged in such a manner as to define a broken line along the straight line L. Therefore, the floor mat  11  can be easily torn apart along the straight line L. Also, the threaded bolt receiving holes  102  may be provided with a notch  115  so that stress concentration may occur in this part, and the dismantling work may be even further facilitated. 
   According to the illustrated embodiment, because three parting lines L are defined by the threaded bolt receiving holes  102  and slots  114 , when dismantling the vehicle body, after removing the fasteners attaching the floor mat  11  to the vehicle body floor  7   f , with the seats  9  still left mounted, the floor mat  11  can be separated into four parts by tearing the floor mat  11  along the parting lines L. Therefore, without requiring the seats  9  to be removed, the floor mart  11  can be easily torn away from the vehicle body floor  7   f.    
   The process of dismantling an automobile given as an example of the device designed and manufactured according to the present invention is described in the following with reference to  FIGS. 20 to 22 . 
   Liquids such as fuel, lubricant, air conditioner refrigerant and coolant are recovered from the vehicle, and the engine module  21 , door modules  31 , instrument panel  8  and seats  9  are removed from the vehicle body  7  by releasing fasteners or the like. 
   The engine module  21  is charged into a melting furnace  121  after non-metallic components such as the electric components  13 , air cleaner  25  and hoses  27  are removed therefrom. The door modules  31  are also charged into the melting furnace  121  after the side glass panes  33  and window regulator motors  38  are removed. The meter panel  75  and control panel  87  are removed from the instrument panel  8 , and the instrument panel  8  is then removed from the dashboard  51 . The removed instrument panel  8  is charged into a shredder  128 . 
   After all the component parts and accessories are removed, the vehicle body  7  is pressed, and is charged into the melting furnace  121 , along with the metallic components of the engine module  21  and door modules  31 , so as to be eventually separated into aluminum  122 , iron  123  and residue  124 . The aluminum  122  is refined further, and used as the material  125  for casting engine blocks. The iron  124  is recycled by steel makers as the material for concrete reinforcing steel and shape steel. The residues containing inorganic substances are recycled by mixing them with bricks and pavement material  127 . 
   The components such as the dashboard  51  that are essentially made of plastic material and may include thin pieces of metal are, along with glass, charged into the shredder  128  and shredded into small pieces. The obtained small pieces are separated into different materials by using known means such as centrifugal force, wind force or magnetic force, and delivered to corresponding material supplies. 
   The engine module  21 , door modules  31  and electric components including the meters  15 , audio unit  14  and window regulator motors  38  are processed by electric component makers  129 . Those that can be overhauled are utilized as spare parts, and the remaining units are processed for recycling the material. Even when the electric appliances and other forms of onboard electric equipment are composed of materials of different kinds, if they are designed and manufactured according to the present invention, the processing by the electric component makers  129  can be simplified. 
   INDUSTRIAL APPLICABILITY 
   By selecting the various materials that make up each particular device according to the anticipated processes for disposing them, mounting a plurality of components onto a common base as an independent module, and adapting the various components destined for different disposing processes to be readily separated from each other, the materials which conventionally involved serious difficulties in separating and recycling are allowed to be recycled, and metals can be recycled as high quality materials. In particular, by using a common material for associated parts as much as possible, and integrating various members made of a common material or materials that are suited to be disposed by a same process into an independent module, a simultaneous disposal of such components becomes possible. Therefore, what was previously considered as waste material which is fit only for landfill can now be used as a useful resource. Therefore, the amount of waste can be minimized, and the present invention provides a high level of industrial utility.