Aluminum aerosol can and aluminum bottle and method of manufacture from coil feedstock

Abstract

Aerosol cans, more particularly, aluminum aerosol cans made from disks of aluminum coil feedstock, are provided. A method for necking aerosol cans of a series 3000 aluminum alloy is also provided. The method prevents the cans from sticking in the necking dies and produces a can with a uniquely shaped profile. The aluminum aerosol cans that are produced have the attributes of strength and quality, while being produced at a cost that is competitive with steel aerosol cans.

What is claimed is:  
     
         1 . A one piece aluminum can, comprising: 
 a generally vertical wall portion having an upper end and a lower end, said upper end having a predetermined shoulder profile and a neck;    a bottom portion extending from said lower end, said wall portion and said bottom portion constructed of a series 3000 aluminum and having a thickness sufficient to withstand an internal pressure of at least 270 psi.    
     
     
         2 . The aluminum can of  claim 1 , wherein said predetermined profile is adapted to receive an aerosol-dispensing device.  
     
     
         3 . The aluminum can of  claim 1 , wherein said bottom portion has a U-shaped profile around the periphery of said bottom and a dome-shaped profile along the remainder of said bottom portion.  
     
     
         4 . The aluminum can of  claim 3  wherein said dome-shaped profile of said bottom portion is free from wrinkles.  
     
     
         5 . The aluminum can of  claim 3 , wherein said generally vertical wall portion has a thickness of approximately 0.21 mm, and said bottom portion has a thickness of approximately 0.51 mm in the area of said U-shaped profile.  
     
     
         6 . The aluminum can of  claim 1 , wherein said predetermined profile includes one of a tapered shoulder, rounded shoulder, flat shoulder, and oval shoulder.  
     
     
         7 . The aluminum can of  claim 1 , wherein said can is between 100 and 200 mm in height and 45 and 66 mm in diameter.  
     
     
         8 . The aluminum can of  claim 1 , wherein the exterior of said can is brushed.  
     
     
         9 . The aluminum can of  claim 1 , wherein said neck is threaded.  
     
     
         10 . The aluminum can of  claim 1 , additionally comprising a threaded plastic outsert carried by said neck.  
     
     
         11 . The aluminum can of  claim 1 , wherein said series 3000 aluminum from which said can is formed has a starting thickness of approximately 0.51 mm.  
     
     
         12 . A one piece aluminum can, comprising: 
 a generally vertical wall portion having an upper end and a lower end, said upper end having a predetermined shoulder profile and a neck;    a bottom portion extending from said lower end, said wall portion and said bottom portion constructed from a series 3000 aluminum having an initial thickness of 0.51 mm.    
     
     
         13 . The aluminum can of  claim 12 , wherein said predetermined profile is adapted to receive an aerosol-dispensing device.  
     
     
         14 . The aluminum can of  claim 12 , wherein said bottom portion has a U-shaped profile around the periphery of said bottom and a dome-shaped profile along the remainder of said bottom portion.  
     
     
         15 . The aluminum can of  claim 14  wherein said dome-shaped profile of said bottom portion is free from wrinkles.  
     
     
         16 . The aluminum can of  claim 14 , wherein said generally vertical wall portion has a thickness of approximately 0.21 mm, and said bottom portion has a thickness of approximately 0.51 mm in the area of said U-shaped profile.  
     
     
         17 . The aluminum can of  claim 12 , wherein said predetermined profile includes one of a tapered shoulder, rounded shoulder, flat shoulder, and oval shoulder.  
     
     
         18 . The aluminum can of  claim 12 , wherein said can is between 100 and 200 mm in height and 45 and 66 mm in diameter.  
     
     
         19 . The aluminum can of  claim 12 , wherein the exterior of said can is brushed.  
     
     
         20 . The aluminum can of  claim 12 , wherein said neck is threaded.  
     
     
         21 . The aluminum can of  claim 12 , additionally comprising a threaded plastic outsert carried by said neck.  
     
     
         22 . The aluminum can of  claim 12 , wherein said can is capable of withstanding an internal pressure of 270 psi.