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Screen Printing Gear  Requirements

To print high quality images and stay as productive as possible, our equipment has to be in peak form. Screen printing equipment provides special requirements.

I print caps, and the first maintenance items I take a look at are the screen and squeegee. The condition of both of these items will decline faster than other areas of printing equipment that My partner and i also monitor. Some of these additional aspects will surprise anybody who prints, regardless of whether an individual print caps, shirts, sweats, signs or other items, but first let's take a look at cap screens and squeegees.

Screen

Cap screens are different from shirt screens, because one side has to be a thin bar to print the image near to the bill of the cap. The image might be as close as 1/16" to the inside the thin bar rather than out in the heart of the screen like the T-shirt screen.

When the tension on a screen is minimal, the mesh might shift from registration during printing and the ink probably will be driven down into the particular fabric. The color of the fabric can then be seen. So a flash cure and second print are needed. That double work can be avoided with tight screens and if you take other steps.

Low tension screens cause ink to build up under the screen. Then the screens need to be cleaned periodically during any print run. The tension will be even lower near the thin side of the frame, which is the graphic area, than in other regions of the screen. A tip off to this low tension at the end of the image area is really a greater amount of ink being deposited.

One of the most significant steps to producing top quality images and being effective is using high pressure screens. Tension is more very important to cap screens than shirt screens, because materials used to make caps, particularly foam front hats, are softer than T-shirts, signs and many other items

Stretch and glue screens, that is, those where the mesh is glued for the frame, probably will need to become re-stretched and glued before employment of any size. A retensionable frame enables you to tighten the mesh without removing the mesh. An aluminum tubular frame will hold more pressure than wood.

If the frame isn't retensionable, then the thin bar should be steel rather than metal, or worse, wood, Tension can be increased by deflecting the thin bar side from the screen in towards the center of the screen before hanging the mesh. Steel should we wiped down with mineral spirits or alcohol to eliminate the oil so super glue will hold the mesh under tension even from the bar is only 1/8" heavy. Once the glue is dry on all sides, then mesh can be laid over the flat side of the particular thin bar and glued to the flat side with extremely glue. (possible exhibit will be photo showing deflection of steel bar on cap frame with quick clamp)

Getting mesh tension to some level just short regarding breaking the mesh is a critical maintenance step in order to avoid problems that affect quality and productivity. The screen and squeegee are usually like two blades of scissors that must be sharp to cut ink off and deposit that ink on top of a cap.

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