Screen printing or silk screen∞&ing is a printing technique <®¥particularly suited for flat or relatively flσε>πat surfaces.
時(shí)間(jiān): 2016-03-08
點擊次數(shù): 608
Screen printing or silk screening is a ÷↓printing technique p← articularly suited for flat or relatiδβ≤γvely flat surfaces. The heart of the ≠∏ process involves a fine mesh ©₽Ωor screen that is ti™≤ghtly stretched around a ri©πgid frame. The areas that are not to be printe±γαd are masked out on the scr₩© ₽een, and to create the pr§×'int, the framed screen is €β↕positioned over the item to ©"be printed, along with a dollop of thick ink€≠. A squeegee is then used to press the i∑σnk through the screen.
The masked areas prevent ink from passing thr$φ↔ ough, but the unmasked areas allow the i ↔ nk to be imprinted on the mΩ>$∑aterial. The item is then sent on a conv™∏₩eyor belt through a heat-tunn✘ ∑☆el. This curing process ensures Ω£that the inks dry quickly so that they m←εaterials can be stacked or pack©>Ω"aged. Properly cured φ∑¶inks will remain on the printed su¥±✔bstrate even under harsh conditio÷♥¶ns.
If more colors are desired in the final design, t★σhe process is repeatΩ∑∑ed with different screens. A∏←€ design that requires four differen✘Ω€t colors would, theref≈"ore, require four different screens. The s★Ω<™creens are usually placed on a rotary press ™ that allows the different color prints to be p >→♥roperly aligned or registered with each other. So §₩me screen-printers have fully automatic press™∞es that do not require any manual labor ot'$her than set-up and loading/unloa<₩ε ding.
