Everchase Industrial Ltd - Product: Wet Film

Features:

General screen printing type solder mask
EKIRESIN PSR-550 Series

Green, Red, Violet, Gold, Blue, Black and White


		GOO Chemical's halogen-free solder resist has granted the recognition of UL94V-0. Highly heat resistance, and electric resistance properties. Highly in durability.

Ultraviolet solder mask
PSR-310 Series

Halogen free ink series Spray coating type PSR550HA SP Series


		Halogen-free is best ecological way in PCB field. GOO Chemical's halogen-free solder resist has granted the recognition of UL94V-0. Highly heat resistance, and electric resistance properties. Highly in durability.

Halogen free ink series Screen printing Series
PSR550HA


		Halogen-free is best ecological way in PCB field. GOO Chemical's halogen-free solder resist has granted the recognition of UL94V-0. Highly heat resistance, and electric resistance properties. Highly in durability.

Product No.	Coating Method	Colour
PSR-550HAG	Screen Printing	Green
PSR-550HAB	Screen Printing	Blue
PSR-550HG	Curtain Coating	Green
PSR-550HB	Curtain Coating	Blue
PSR-310HG	Screen Printing	Green
PSR-310HB	Screen Printing	Blue

EKIRESIN PER-800
Liquid photo imageable pattern resist (Alkali developing type)

PER-800 Series

PER-800 is liquid form which can cover any scratches and roughness on the surface of substrates.

PER-800 can form finer pattern than UF. (Under ordinary UV light)

PER-800 dried film has stable properties and long lasting.

Product Number	Coating	Exp. Energy (mj)	Resolution (m)	Uses/Features
DB-307N	Dip Coater	120	20	Applied to PLP system to produce fine pattern on outer layer boards in combination with UV plugging ink.
RB-3301	Vertical Roller Coater	40-60	20-25	For rigid boards can be sacked after dried. High photosensitivity, and high productivity.
RB-2201	Horizontal Roller Coater	40-60	20-25
RB-236	Horizontal Roller Coater	80	20	For flexible PCB tackiness-free.
B-200	Screen Printer	50-80	30-40	For rigid & flexible PCB easy handling, low-cost, excellent resistance against plating.

EKIRESIN PER-800 RB Series

Product Variety	RB Series
Coating method	Vertical Roller Coater	Horizontal Roller Coater
Product number	RB-3301	RB-2201
Viscosity	40dPa.s	20dPa.s
Usage	Inner Layer	Inner Layer
Exposure (mj)	40-60	40-60
Resolution (mm)	20-25	20-25
Features	High resolution, tackiness free, strong resistance against mechanical damages.	High resolution, tackiness free, strong resistance against mechanical damages.
Remarks	Leave over 3 days before further operation on the boards.	Leave over 3 days before further operation on the boards.

EKIRESIN PER-800 DB & B Series

Product Variety	DB Series	B Series
Coating method	Dip Coater	Screen Print
Product number	GB-SK	B-200
Viscosity	8mPa.s	100dPa.s
Usage	Inner Layer	Outer Layer/Inner Layer
Exposure (mj)	100-150	50-80
Resolution (mm)	10	30-40
Features	Fine pattern Line/Space=Under 10microns	Low Material cost Available for plating resist
Remarks	Use collimated light develop with GR-8

PSR-550C GF-2-T5

Features:	PSR-550C (GF-2-T5) is alkali developable solder resist applied to slit type curtain coater.
General Properties

Product No.	PSR-550C (GF-2-T5)
Main Agent	PSR-550C(GF-2-T5)
Hardener	LS-55C(WF-2-T5)
Appearance	Green Glossy
Mixing Ration (Net 8kg set)	Main agent: 6.77; Hardener: 1.23	By weight
Viscosity (after mixed)	90±15dpa.s
Non volatile weight% (after mixed)	75%
Specific gravity (after mixed)	1.2
Standard additional weight of thinner	Thinner/ink=1.6kg/8kg	Thinner=PMA (Propylene glycol mono-methyl ether acetate)
Viscosity after diluted by standard addition of thinner	80±5Sec	Measured by DINcup#4 Viscosity at 25°C
Pre-cure limit	Up to 80°C for 80min
Exposure range	250-350mj/cm²	On resist surface
Shelf life	9 months after production	Stored in dark and cool room below 20°C

EKIRESIN PSR-550

Product Variety	G Series	GF Series
Coating Method	Screen Printing	Curtain Coating
Colour	Green	Green
Solid Content	75-85%	55-65%
Viscosity (at 25>C)	130-160dpa.s	3-5dpa.s
Exposure On Resist Surface	>150mj/cm²	>150mj/cm²
HAL Resistance Molten Solder:260 Hot Air:460°C	Excellent	Excellent
Major Features	1. Low Exposure Type 2. Excellent Water-Soluble Flux Resistance 3. Excellent Electroless Gold Plating Resistance 4. High Electric Insulation
UL Standard	94V-0

EKIRESIN PSR-550 is excellent in heat resistance, adhesion and chemical resistance.

EKIRESIN PSR-550 Series are also available in the colour
PSR-550 series	--red	--violet	--gold
PSR-550 series	--blue	--black	--white

High resolution	Adhesion after electroless gold plating

Side view of solder mask between QFP pads	After electroless Ni/Au process
Standard process

Process	Conditions
Two-liquid mixture Pre treatment 1^stside coating Hold time Pre cure 2^ndside coating Hold time Pre cure Exposure Development Post cure	Full mixture of two materials: main agent & Hardener Picking and buffing Screen coating/curtain coating Room temperature/approximately 10min 80°C /20min Screen coating/curtain coating Room temperature/approximately 10min 80°C/approximately 20min 150-600mj/cm² 60-90sec (30°C 1wt%Na₂CO₃spray) 150°C/60min


We customise other different type of resists.For example:

EKIRESIN PSR-550 Y series	Gold type
EKIRESIN PSR-550 MW series	White type

Everchase Industrial Ltd. Can also customises and supply to your specification.

Measure Features of LPI (Comparison with Dry Film resist)

1. Excellent adhesin
2. High resolution
3. Low material cost

	LPI	DF
Adhesion	Resist ink covers dents or scratch of copper, and prevents from etching solution penetrating through.	Etching solution penetrates into the open space, and makes open-defects.
Resolution	Without protective film, direct exposure can make fine pattern.	Protective film disperses exposure light and lowers pattern's resolution. Thick resist film is not suitable for making fine pattern.
Material Cost	Cost : USD 0.05/ft²	Cost :USD 0.1/ft²

UV-curable plugging ink(Solvent free)
PLAS FINE PTR-924W, PTR-626

Plas Fine PTR-924W, PTR-626 is Ultraviolet-curable plugging ink, which contains non-solvent. In process, chippings and dents will not happen and it makes flat surface. This ink is especially suitable for using with liquid photo resist ink

Features:

Short curing time

Almost no shrinkage, because there are no solvent contained

Good in scraping

Good matching with liquid photo resist and good resist against developer

Product No.	PLAS FINE PTR-924W	PLAS FINE PTR-626
Coating Method	Roller Coating	Selective Screen Printing
Colour	White	White
Viscosity	220ps	220ps
Curing Conditions by UV	1500mj/cm²	1500mj/cm²
Acid resistance	Excellent	Excellent
Removability by alkali	2-4min dissolved	2-4min dissolved

Diameter of hole:1mm

Diameter of hole:0.35mm

Side view of plugged trhough-hole

Board thickness:1.6mm

Everchase Industrial Ltd
Chemical supply since 1988

Halogen-free solder resist

Ekiresin PSR-550

PSR-550C GF-2-T5

Ekiresin PER-800

Measure Features of LPI

UV-curable plugging ink

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