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Screen printing is the process in which a screening medium, such as silk, polyester, nylon, plastic, or woven wire mesh, is used to transfer a pattern onto a surface with ink. A special epoxy is applied to the screen to ensure ink is blocked off in accordance to the design, essentially creating a stencil.
Why Use Woven Wire Mesh?
Compared to other screening media, wire mesh delivers a heightened level of tensioning capabilities, durability, heat resistance, and precision.
Taking a closer look, materials, such as nylon and polyester, have a 5% elongation, whereas woven wire mesh has below 1%. in particular, we conduct several integrity tests to calculate the exact amount of tension the mesh can withstand before breaking.
Now, because wire mesh is far more durable than other materials, it can withstand greater tension loads. This can be critical when finer mesh counts are needed to depict more detailed designs.
The Importance of Calendaring
With any screen media, friction between the knuckles of the screen intersections and the squeegee is one of the more notable concerns. This is because this friction increases the possibility of encountering subtle yet noticeable inconsistencies in the prints.
Fortunately, wire mesh can be calendared. Calendaring is the process in which the mesh is run between two rollers and endures tremendous amounts of simultaneous heat and pressure. As a result, the knuckles of the mesh are flattened, and the overall thickness of the mesh is reduced.
This makes for a smoother surface which reduces the friction, making for more consistent prints and extending the lifespan of your squeegee.
Example applications:
PCBs - single- and double-sided printed circuit boards
FPC - flexible single- and double-sides FPC conductor paths
Thick film circuits
LTCC circuits – Low Temperature Cofired Ceramics
MLCC components, ceramic capacitors
Membrane keypads
Scales
Chip production
RFID - Radio communications and networks
LCD - liquid crystal display screens
PDB - plasma display screens
OLED - organic light emitting diodes
FED - flat screen technology
Electronic paper, e-paper
TP - touch panels
Solder paste for SMD
The standard BC bolting cloth specifications cover a wide spectrum, starting in the ränge of 500 to 66 Mesh, open area from 25 to 54% and cloth thicknesses from 60 to 200 µm.
| HB CODE | MESH | APERTURE WIDTH | WIRE DIAMETER | OPEN AREA | CLOTH THICKNESS | CLOTH THICKNESS TOLERANCE | THEORETICAL INK DEPOSIT | THEORETICAL MAX. TENSION | |
|---|---|---|---|---|---|---|---|---|---|
| w µm | d µm | Ao % | µm | µm | cm³/m² | inch³/ft² | N/cm | ||
| VA 200-25 | 500 | 25 | 25 | 25 | 60 | -/+ 5 | 15 | 0,085 | 40 |
| VA 160-25 | 400 | 38 | 25 | 36 | 52 | -/+ 3 | 19 | 0,107 | 32 |
| VA 130-30 | 325 | 50 | 30 | 39 | 63 | -/+ 3 | 25 | 0,140 | 36 |
| VA 130-36 | 325 | 42 | 36 | 29 | 81 | -/+ 5 | 23 | 0,133 | 53 |
| VA 115-32 | 290 | 56 | 32 | 40 | 67 | -/+ 3 | 27 | 0,154 | 37 |
| VA 110-32 | 280 | 60 | 32 | 43 | 67 | -/+ 3 | 28 | 0,162 | 35 |
| VA 108-36 | 270 | 56 | 36 | 37 | 80 | -/+ 3 | 30 | 0,168 | 45 |
| VA 100-36 | 250 | 63 | 36 | 40 | 79 | -/+ 3 | 32 | 0,181 | 42 |
| VA 100-40 | 250 | 63 | 40 | 37 | 85 | -/+ 3 | 32 | 0,180 | 49 |
| VA 90-36 | 230 | 75 | 36 | 46 | 72 | -/+ 3 | 33 | 0,186 | 37 |
| VA 80-50 | 200 | 75 | 50 | 36 | 110 | -/+ 3 | 40 | 0,224 | 64 |
| VA 80-40 | 200 | 85 | 40 | 46 | 89 | -/+ 3 | 41 | 0,233 | 41 |
| VA 70-45 | 180 | 95 | 45 | 46 | 102 | -/+ 5 | 47 | 0,266 | 46 |
| VA 65-50 | 165 | 106 | 50 | 46 | 109 | -/+ 5 | 50 | 0,285 | 51 |
| VA 57-56 | 145 | 118 | 56 | 46 | 120 | -/+ 5 | 55 | 0,313 | 57 |
| VA 61-63 | 156 | 100 | 63 | 38 | 130 | -/+ 5 | 49 | 0,277 | 77 |
| VA 59-67 | 150 | 100 | 67 | 36 | 152 | -/+ 5 | 55 | 0,309 | 86 |
| VA 48-67 | 120 | 140 | 67 | 46 | 140 | -/+ 5 | 64 | 0,363 | 69 |
| VA 35-90 | 88 | 200 | 90 | 48 | 180 | -/+ 6 | 86 | 0,485 | 89 |
| VA 28-100 | 66 | 280 | 100 | 54 | 200 | -/+ 7 | 109 | 0,616 | 84 |
Contact Person: Ms. April
Tel: 13731127302
