Understanding_ the_Cleaning_Process_for_Automatic_Stencil_Printers - 第26页
Solvent con clusion s • Evapor ation rat e of chemistr y critical to printer ap plication • Good indicator is the flash point of the material – the lo wer t he flashp oint – the bett er the evapor ation rat e • T est for…
Approved Solvents
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Understanding the Cleaning Process for Automatic Stencil Printers
Solvent conclusions
• Evaporation rate of chemistry critical to printer application
• Good indicator is the flash point of the material – the lower the
flashpoint – the better the evaporation rate
• Test for residues – mirror test
• Avoid water-based solvents for the printer
• Petroleum based solvents should be also be avoided
• Check with your paste manufacturer for compatibility of solvents
• Work with chemistry vendors for best application
• Always start wipe cycle with the solvent wipe
• Match the solvent to the material and application – one size does
not fit all
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Understanding the Cleaning Process for Automatic Stencil Printers
Preventive Maintenance
• Check the owner's manual for preventive maintenance for your individual machine
• Replace Vacuum filters based on requirements
• Check main drive belts/chains for proper tension
• Clean all bushings and remove any foreign material from wiper assembly
• Check and replace vacuum hosing as needed especially if using solvent
• Remove plenum and remove any material build up in trough – check plenum bow if present
• Inspect plenum for damage – verify match of plenum to stencil/foil size
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Understanding the Cleaning Process for Automatic Stencil Printers