December '16

For the Business of Apparel Decorating

Issue link:

Contents of this Issue


Page 65 of 134

2 0 1 6 D E C E M B E R P R I N T W E A R || 61 pay off to do your homework on the dif- ferent products on the market to deter- mine which will work best in your facility. Pressure washing the screen is one of the most critical aspects of the manual screen- reclamation process. One of the greatest mistakes many screen-printing facilities make is to invest in a pressure washer that lacks the required PSI to remove the stencil and contaminates from the mesh properly. The pressure washers offered at your local hardware store typically lack the necessary power to do the job. The standard 1,100 to 1,500 PSI will remove the stencil, but in many cases will leave residue in the mesh due to the lack of PSI. You should utilize a unit with a minimum of 2,000 to 2,500 PSI to properly reclaim and degrease your screens. PROPER RINSING PROCEDURES During the reclaiming/degreasing process, it is important to ensure that there are no residual contaminates left on the mesh. Any leftover may interfere with the stencil or printing processes. Once you remove In the past, the manual reclaiming pro- cess required a reclaiming agent to soften the stencil for easy removal with a high- pressure washer. Dip tanks offer a much easier means of softening the stencil before removal, which allows you to start a cycle where screens are soaking while you wash previously-soaked screens. There are numerous products offered for emulsion removal with performance parameters based on the initial concentra- tion. These products are also available in concentrates to be diluted, an option that makes the process very economical. It will

Articles in this issue

Links on this page

view archives of Printwear - December '16