Glass-fibre blends aid laser marking
A
Laser Lines (Industrial and Medical) product story
Edited by the Engineeringtalk editorial team
Feb 13, 2007
Adding a 20-30% glass fill to nylon formulations increases the blend's stability, rigidity and wear-resistance.
Adding a 20-30% glass fill to nylon formulations increases the blend's stability, rigidity and wear-resistance.
In many cases, the glass fibre also helps to increase contrast on plastic materials that are CO2 laser marked.
Although the percentage of glass fill in this nylon gear does not increase mark contrast drastically at low power levels, it still provides an increase in contrast and readability over pure nylon.
In tests, the marking setup consisted of a Synrad sealed CO2 laser coupled to an FH Series marking head and driven by the WinMark Pro laser marking software.
A 125mm focusing lens was installed on the head to obtain a 180um spot with a 3mm depth of focus over the extents of the mark field.
A new drawing in WinMark Pro was opened and created a seven-character part number using Simple, one of WinMark's 12 built-in stroke fonts, and then set a text height value of 4mm.
On the marking tab, a power was set - duty cycle percentage - corresponding to 25W and a velocity of 508mm/s.
Using these settings, the components were marked at a rate of 0.14 seconds per part.
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