Capacity of wire mesh screens to hold tension

In the world of technical screen printing, process challenges have increased widely with the passage of time. Increasing demand for the extreme levels of precision in industries like solar technology and electronics calls for the development of premium sintered wire mesh screens, we offer a wide selection of steel meshes, made particularly for screen printing applications. These materials have been developed for several years for use in leading screening applications.

Heanjia use the best raw materials for the production of fine meshes, to exacting wire diameters. Our excellent quality wire screens are woven in cleanroom conditions in a special air conditioned building, by using state-of-art looms prepared in house by our experts. For specifically challenging applications, the fine mesh screens are cleaned and tested individually. With exhaustive quality testing and process security ensure a premium value end product and full reproducibility.

Properties of Mesh screens

·         Advanced precision levels

·         Widely limited thickness tolerances

·         Stable weave

·         Above average flexural strength

·         Clean and uniform surface area

·         Outstanding abrasion resistance

·         No static loading

·         Uniform appearance without transition

·         Large open area

·         Easy to fabricate

Results

·         Suitable print quality

·         Advanced load capacity and service

·         Controlled link and paste deposit

·         Nominal loss of tension during tensioning and printing processes

·         Outstanding ink and paste flow

·         Increased service life

·         Highest registration accuracy because of higher tensioning properties

·         Enhanced contact properties

·         Rapid stability after tensioning

·         Fast commissioning of processes

Applications

·         Precision screen printing for electronics and solar cell technology

·         Advanced generation of screen printing meshes for high tensioning values. It enhances the end screens and registration accuracy

·         Advanced rigidity and high levels of stability.

·         Screen printing demanding increased color lay down, altered shape, fewer contact points

·         Economical screen printing meshes, exclusively for printing on glass and ceramics

The wire mesh screens attain the highest levels of flexural strength and the nominal percentage of elongation in terms of elastic yield point.

For printing on non-absorbent substrates, off contact distance should be used. The chosen off contact distance allows the screen directly behind squeegee to dissociate from the substrate. Only thereafter the screen separates cleanly and fully from the color, a prerequisite for a sharp print with uniform color lay down.

The required off contact distance is specified by three factors:

Mesh tension, Rheology and Squeegee speed

With higher mesh tension, ink viscosity reduces and squeegee speed reduces, hence small off contact distance is needed.

While printing with off contact distance, the mesh deforms nominally that creates a negative effect on registration accuracy.

The woven wire mesh screens are generally tensioned to higher values as compare to synthetic meshes and the regular development and refining of mesh production extends this trend. The screen should be able to handle and retain any levels of tension. For achieving high value and reproducible printed results, the screen attains high dimensional stability.

Suitably tensioned screens can attain outstandingly long service lives.