LPI INKS

LPI series are high precision alkali developing type liquid photoimageable solder resist inks specially formulated for manufacturing of double-side and multilayer boards, it comprises two components which enable a longer self-life before mix and hence ensure a more reliable quality. Wide tolerance of operating parameter, good physical and chemical properties and suitability of various coating methods make these resist ink become the superior choice for producing of high accuracy double-sided and multi-layer boards.

Characteristics of LPI series

• Good adhesion and leveled coverage to the laminate and to the conductors of the board without separation and gap.
• Simplicity of printing application enables even and uniform, no blistering coating to be obtained easily.
• Wide operating tolerance limits reduces the percentage of rework and reject.
• Good resistance to molten solder with no discoloring, peeling occurred during the process of wave.
• Excellent resistance to chemicals that is able to withstand the attack of solvent, fluxes and electroplating chemicals.
• High accuracy for producing good soldering resistance bridge to the limited of 2 mil(0.05mm).
• High S.I.R
• Remarkable mechanical properties like hardness, adhesion, wear resistance etc.
• Low irritation skin and eyes

UV CURABLE SOLDER RESIST INKS

USM-U2 and UVC series is a one part-type of solder resist ink with high precision, solvent free and 100% solid content, Its special formulation enables the ink to cure rapidly through the process of exposure to UV ray. It is mainly used for production of single/ double sided boards, carbon boards and silver through hole boards etc.

Characteristics of UV series:

• Good adhesion and leveled coverage to laminated and to the conductors of the board without separation and gap.
• Simplicity of printing application enables even and uniform, no blistering coating to be obtained easily.
• Good resistance to molten solder with no discoloring, peeling occurred during the process of wave soldering, roller tinning or hot air leveling etc.
• Excellent resistance to chemicals that is able to withstand the attack of solvent, fluxes and electroplating chemical.
• High S.I.R
• Remarkable mechanical properties like hardness adhesion, wear resistance etc.
• Easy removal of ink thus less the pollution.

Variety of choices (refer to table blow for details)