Patent ID: 6159544
Filing Date: 2000-12-12
Classification: B05C,B05D,Y10S

Abstract:
A die set for forming multiple stripes of repeated coating liquids composed of two materials A and B adjacent to each other, said die set comprising:an upper die having a first groove formed on a lower horizontal plane thereof, and a first inlet hole formed at a location other than said lower horizontal plane thereof for introducing said liquid A from outside into said first groove;an inverted U-shaped upper shim having a first thickness;an inverted U-shaped lower shim having a second thickness;a guide shim having an upper side and a lower side, which are parallel to a horizontal plane, further comprisinga plurality of spaced first flow distribution blocks, projecting from said upper side by a first distance that is equal to said first thickness of said upper shim, each of said plurality of first flow distribution blocks being of an inverted U shape with a head and two legs,a second flow distribution block projecting from said lower side of said guide shim by a second distance that is equal to said second thickness of said lower shim, anda plurality of distribution passages, each of said plurality of distribution passages connecting said lower side and said upper side of said guide shim, and an outlet of said distribution passage being located between said two legs of said first flow distribution block and an inlet of said distribution passage being adjacent to said second flow distribution block; anda lower die having a second groove formed on an upper horizontal plane thereof, and a second inlet hole formed at a location other than said upper horizontal plane thereof for introducing said liquid B from outside into said second groove;wherein said upper die, said upper shim, said guide shim, said lower shim and said lower die are assembled in sequence, so that said upper shim is between said lower horizontal plane of said upper die and said upper side of said guide shim, and said lower shim is between said upper horizontal plane of said lower die and said lower side of said guide shim; wherein said first groove of said upper die and said plurality of first flow distribution blocks are enclosed by said inverted U-shaped upper shim, and said second groove of said lower die is enclosed by said inverted U-shaped lower shim; wherein openings of said inverted U shapes of said plurality of first flow distribution blocks face toward the same direction of opening of said inverted U-shaped upper shim, and said second flow distribution block seals opening of said inverted U-shaped lower shim, so that, when said liquid A and said liquid B are fed into said first inlet hole and said second inlet hole respectively, said liquid A will fill said first groove and pass around said plurality of first flow distribution blocks, said liquid B will fill said second groove, enter said inlets of said plurality of distribution passages and exit from said outlets thereof, and then liquids A and B join at positions near said two legs of said plurality of first distribution blocks, forming an ABAB pattern.