Stable Quality LPi Photoimageable White Pism Solder Mask PCB
- Category: >>>
- Supplier: Dongguan City Lan-Bang Electronic Metal Materials Co. Ltd.
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Product Overview
Description
Product Description
Specification
Packing & Delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Company Profile
Procedure
Content
(1)Dilution and viscosity adjustment
To stir for 5-10 minutes till it’s well proportioned. If the viscosity needs to be adjusted, 1-2% of the diluent can be added in.
It’s recommended to use BCS diluent.
(2)Standing
To stand 10-15 minutes after fully stirring, and then to process screen printing.
(3) Screen mesh
Either 36T or 43T is available
(4)Pre-curing
A：To print and cure each side separately:
The first side in hot air circulating oven: 75±5℃、15-20 minutes.
The second side in hot air circulating oven: 75±5℃、20-25 minutes.
B：To print and cure two sides at the same time.
Hot air circulating oven: 75±5℃、25-35 minutes.
(5)Exposure
7K UV contact exposure: 500-700mj/c㎡
21-step sensitivity guide: 9-12 steps covered.
(6)Developing
Developing solution: (1±0.2%) of Na2CO3 solution
Temperature of developing solution: 30±2℃
Developing time: 40-60 seconds
Washing pressure: 1.8~2.2kg/c㎡
(7)Posterior curing
Temperature: 150±5℃ Curing time: 60 minutes
Matters need attention：
1. To fully stir till it’s well-proportioned before using it.
2. Parameters above is only for reference, the specific operation should be subject to samples.
Content
(1)Dilution and viscosity adjustment
To stir for 5-10 minutes till it’s well proportioned. If the viscosity needs to be adjusted, 1-2% of the diluent can be added in.
It’s recommended to use BCS diluent.
(2)Standing
To stand 10-15 minutes after fully stirring, and then to process screen printing.
(3) Screen mesh
Either 36T or 43T is available
(4)Pre-curing
A：To print and cure each side separately:
The first side in hot air circulating oven: 75±5℃、15-20 minutes.
The second side in hot air circulating oven: 75±5℃、20-25 minutes.
B：To print and cure two sides at the same time.
Hot air circulating oven: 75±5℃、25-35 minutes.
(5)Exposure
7K UV contact exposure: 500-700mj/c㎡
21-step sensitivity guide: 9-12 steps covered.
(6)Developing
Developing solution: (1±0.2%) of Na2CO3 solution
Temperature of developing solution: 30±2℃
Developing time: 40-60 seconds
Washing pressure: 1.8~2.2kg/c㎡
(7)Posterior curing
Temperature: 150±5℃ Curing time: 60 minutes
Matters need attention：
1. To fully stir till it’s well-proportioned before using it.
2. Parameters above is only for reference, the specific operation should be subject to samples.
FAQ
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