Pattern transferred can and method for manufacturing the same

Abstract

By touching a band type transfer mold member 13 formed with micro protrusion and recess parts 13 a thereon on a can 11 and holding and pressing the can 11 and the band type transfer mold member 13 with a pattern surface forming mold member 14 and a press-supporting mold member 15, a micro protrusions and recesses pattern 12 is transferred to the can. By using separate transfer mold members of the band type transfer mold member having the micro protrusion and recess parts and the pattern surface forming mold member having the pattern surface forming part to form the micro protrusion and recess patterns, the band type transfer mold member can be moved little by little or by a length equivalent to the circumference of the can or can be replaced in accordance with the number of cans to be processed whereby continuous transfer can be realized without being affected by build-up due to clogging or wear of the micro protrusions and recesses and a large scale production at a high speed can be achieved.

1 . A pattern transferred can having micro protrusion and recess patterns transferred by touching a band type transfer mold member formed with micro protrusion and recess parts thereon on a can and holding and pressing the can and the band type transfer mold member with a pattern surface forming mold member and a press-supporting mold member.  
   
   
       2 . A pattern transferred can as defined in  claim 1  wherein the micro protrusion and recess patterns are transferred to the can by moving the band type transfer mold member to the pattern surface forming mold member and the press-supporting mold member in a relative movement.  
   
   
       3 . A pattern transferred can as defined in  claim 1  or  2  wherein micro protrusions and recesses of the micro protrusion and recess parts are formed in the shape of protrusions or ridges extending in parallel to the circumferential direction of the can.  
   
   
       4 . A method for manufacturing a pattern transferred can by touching a band type transfer mold member formed with micro protrusion and recess parts thereon on a can and holding and pressing the can and the band type transfer mold member with a pattern surface forming mold member and a press-supporting mold member thereby to transfer a pattern surface formed with micro protrusions and recesses to the can.  
   
   
       5 . A method for manufacturing a pattern transferred can as defined in  claim 4  wherein the band type transfer mold member is moved in a relative movement to the pattern surface forming mold member and the press-supporting mold member thereby to renew the micro protrusion and recess parts of the band type transfer mold member and then the micro protrusion and recess patterns are transferred to the can.  
   
   
       6 . A method for manufacturing a pattern transferred can as defined in  claim 5  wherein renewed micro protrusion and recess patterns are transferred to the can by renewing the micro protrusion and recess parts over a length which is equivalent to or shorter than the circumferential length of the can.  
   
   
       7 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 6  wherein protrusions and recesses which are larger than the micro protrusions and recesses of the band type transfer mold member are formed on the surface of either the pattern surface forming mold member or the press-supporting mold member.  
   
   
       8 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 7  wherein the micro protrusion and recess parts of the band type transfer mold member are formed in the shape of protrusions or ridges extending in parallel to the circumferential direction of the can.  
   
   
       9 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 8  wherein the micro protrusion and recess patterns are transferred to the can with lubricant provided between the band type transfer mold member and the can.  
   
   
       10 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 9  wherein the pattern surface forming mold member is disposed on the inside of the can and the band type transfer mold member and the press-supporting mold member are disposed on the outside of the can.  
   
   
       11 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 9  wherein the press-supporting mold member is disposed on the inside of the can and the band type transfer mold member and the pattern surface forming mold member are disposed on the outside of the can.  
   
   
       12 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 11  wherein the pattern surface forming mold member or the press-supporting mold member is formed as a mold member having a concave surface with a center of curvature thereof being located on the same side as the center of the can.  
   
   
       13 . A method for manufacturing a pattern transferred can as defined in any of claims  4 - 11  wherein the pattern surface forming mold member or the press-supporting mold member is formed as a mold member having a convex surface.