Method of dyeing an SLA part

Abstract

A method for post-dyeing photopolymer parts. It may be used for custom ear shells for hearing aid applications or for adding color to any stereo-lithography part that is made from a suitable clear-based photopolymer resin.

1 . A method of dyeing a photopolymer part, comprising the steps of: 
 a) selecting the dye color to be processed based on customer interest;    b) mixing liquid dye and water to form a dye bath,    c) warming the mixture;    d) placing the photopolymer parts to be processed into the dye bath;    e) removing the photopolymer parts from the dye bath;    f) placing the photopolymer parts into a rinsing solution of detergent and tap water;    g) removing the photopolymer parts from the rinsing solution; and    h) Allowing the photopolymer parts to air dry.    
     
     
         2 . The method of  claim 1 , wherein step (c) is carried out at 140±7 degrees Fahrenheit.  
     
     
         3 . The method of  claim 1 , further comprising the step of placing the photopolymer parts within a microwave oven for approximately 2 minutes.  
     
     
         4 . The method of  claim 1 , wherein in step (d) the photopolymer parts remain in the dye bath about 10 minutes.  
     
     
         5 . The method of  claim 1 , wherein in step (f) the photopolymer parts remain in the rinsing solution about 2 to 3 minutes.