Blue color photoimageable etching resist ink for pcb industry
|Fineness||≤8µm||0 ~25µm Fineness gauge|
|Density (25℃)||1.10 ~1.30 g/ml|| |
|Screen mesh||100 ~120T|| |
|Film thickness||10 ~12µm|| |
|Curing energy||1200 ~2000 mJ/cm2||The effective value through the polyester film|
|Pencil hardness||≥2H||Pencil hardness test|
|Etching resistance||FeCl3 or CuCl2 acidic solution||45±5℃|
|Moving coating||3~5% NaOH solution ,20~40s||25~35℃|
|Package||5.0 kg/bucket , 20 kg/box|| |
|Shelf time||6 months since the date of manufacture||Store below 25℃ in dark|
APPLICATION and END-USE DESIGN
It is a versatile Etch/Plating Resist used on high volume Print and
Etch boards where a fast rate of throughput per hour is required,
and which is governed by the squeegee speed and the cure rate, and
where the sharpest definition is sought with rapid stripping after
It can be used to be used as an Acid Etch Resist, and is excellent
as a Plating Resist, capable of withstanding up to 40 amperes and
low pH solutions .
FEATURES and ADVANTAGES
1. It is capable of almost Universal application. Its excellent printing
characteristics and screen stability offer the opportunity for use
on hand, semi- and fully-automatic machines.
2. It strips cleanly, without residue on the boards.
3. It resists both Plating baths, Alkali and Acid Etchants, Acid Copper
and Tin Lead Plating baths. Pre-cleaners with pH under 10.0 can
safely be used.
4. Strong blue colour gives good contrast against the copper and
the hard surface produced on curing resists abrasion and mechanical
damage during automatic stacking.
5. High Thixotropy index produces sharp vertical image edges when
screening even fine lines of 200 to 300 micron width.
6. It is formulated from materials which are fully compatible, thus avoiding entirely bleed out onto the copper non-image areas.
7. Fast removal in alkaline solutions.
It is supplied press-ready. It is desirable to print it too thick rather than too thin, otherwise edge definition could
suffer. ER1 is recommended in amounts up to 5%.
It is necessary to clean the copper surfaces of boards to remove
all oxides and grease from the surface. Brushing is the usual
method employed and this gives best adhesion of the etch resist.
Print through 77 - 120T or S polyester mesh or the equivalent in
Stainless Steel. Consult the screen mesh manufacturer to select the
right combination of mesh open area relative to circuit design to
avoid "moire" effect on imaging.
Use a Direct/Indirect or Capillary stencil with a 18 to 20 micron
stencil thickness below the screen mesh when used as an Etch
Resist, and 35 to 50 when used as a Plating Resist, is recommended.
Use a relatively hard polyurethene squeegee of up to 70 to 80
degree shore hardness as Etch Resist, 65 to 70 when used as a
Develop:After above pre-curing ,it need to be exposured by exposure
machine and it need 1100-1200MJ energy for develop
Thermal curing:Infra-Red or Convection ovens with strong exhaust
systems are recommended.
5-10 minutes at 120 degrees C, or 10-15 minutes at 90 degrees C
will give a hard film.
The resist mask can be removed under spray-jets in solutions of
caustic soda or potash of between 2-5% concentration at
temperatures of 40 - 50 degrees C. Alternatively, a 30 - 60 second
dip in static tanks containing 10% NaOH solution, followed by a
water-spray, will be effective.
The pH of the stripping solution should be in excess of 11.5 in
order to obtain optimum results.
Screens can be cleaned with Universal Screenwash SW100.
Store between 10-25 degs C in a dry store.
Avoid subjecting containers to temperatures below 5 deg C because
of the risk of splitting.
Normal stock rotation should be carried out although useful life
will reach 1 year under normal storage conditions. The lid on
opened cans should be firmly sealed.
Hubei Nuojinsen Technology Co.,Ltd ,after years of unremitting
efforts,Combined with foreign advanced technology and
process,Production of PCB ink has reached the technical level,
conforms to the requirement of RoHS environmental protection
directive, with excellent quality and excellent service is deeply
trusted by customers.