Paste painting procedure

Safety Conditions

Before open the paste please read SDS File:ED7100 OSHA MSDS.pdf for the paste. Be sure that the following are available:

Ventilation

Working with paste is highly recommended under a good ventilation area, the hood is a good environment for work.

Poor Ventilation area

Wear a well fitted NIOSH approved or industrial type canister mask.[1], [2]

disposable apron

Paste Splashing

1- Gloves,goggles.

2- suitable protection clothes.

disposable apron

3- sack of sand or absorber for cleaning the area.

Preparation Procedures

Aim

ED7100 paste thickness effect on the electrical resistance of copper based material. [3]

a- Look at the safety conditions before using the paste.

b- Equipment And Tools

  ER7 reducer (call : electrica 877-867-9668 : Jeff miller 630-816-1865 or jmiller@toryon.com for an order), SW100.

Semi auto printer is recommended for the paste, the reducer should be added with very little quantities such that the characteristics of the paste will not change.

get links for semi-auto printer vendor

c- Before Processing Measurements

Measure the values of the resistors of each copper shape (if possible)using the multimeter or the multimeter and the power supply.

d- Paste Processing

1- Clean the paste residues using SW100

3-Let the paste dry, recommended drying conditions are in the table below:

4- Curing for 1 - 2h 30min. at 150 - 165 degrees Celsius.(Contact the company for IR-curing)

Application Procedure for Oven Curing

1.) put on mask and apron (use goggles if spraying paste using printer)

2.) establish a work area under hood in LDS

3.) mix paste (if reducing is needed) under the hood for sufficient ventilation

4.) use applicator to smear paste on pc-board

5.) cure past

6.) post processing/ cleanup

11/9/09

Jeff from electrica sent the following email: Hi Haitham,

I looked into screen printing equipment and found a manufacture by the name of M&R Printing, if you go on the internet and type that in you can look to see if they have something that would fit. Other than that I know some people have used equipment. With regards to the SW100 we have a material that is the same which is our Additive T. If you need a pint of that testing let me know. Hope this helps Jeff

I looked at the website related to printing equipments, they have many choices but I still need to discuss more about what do we need exactly.

I sent to him to send us a additive T which is for cleaning the boards.

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