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Tin Technology Conducts Study as Part of Sustainable Technology Initiative
February 6, 2004 |Estimated reading time: 2 minutes
UK — Tin Technology has conducted a study on "Sustainable Technologies for the Regeneration of Acidic Tin Stripping Solutions Used in PCB Fabrication."
The results of this study are outlined in a paper, which is available on Tin Technology's and Intellect's Web site.
This study, which is part of the Sustainable Technology Initiative, funded by the UK DTI, concluded in October 2003. Additional partners in the project were Shipley Europe Ltd. and Intellect. Shipley is a leading supplier of process chemicals to the PCB industry and Intellect is the trade association for the information technology, telecommunications and electronics industries in the UK.
The study materialized in response to a growing need by both public opinion and forthcoming legislation to adopt a more environmentally responsible attitude and sustainable approach towards manufacturing products. The study found that it is possible, through a combination of chemistry and equipment to produce a sustainable treatment process, although a more practical program needs to be initiated in order to reach the ultimate goal of a truly sustainable tin stripping process.
This project was a natural extension to an earlier project carried out by Shipley and other partners in the late 1990s to address a similar problem with tin-lead-based stripping solutions. At that time, lead was widely used in etch resists, but in the wake of growing environmental legislation and with the desire to avoid the use of lead for health reasons, the PCB industry now has largely moved over to the use of pure tin-based etch resists. Consequently, a new approach was required for treating the waste from these new etches.
The work carried out in this project is complementary to work carried out in other UK- and European-funded projects to help develop more environmentally friendly processes for the PCB industry. The findings of this study are to be reported in a presentation on "Sustainable Technologies for the Regeneration/Recovery of Spent Acid Tin-Stripping Solution" at the EIPC Winter Conference 2004 on Innovation and PCB Technologies, held February 12 through 13, 2004, at the Radisson SAS Montfleury in Cannes, France, where the issues raised in the study can be further discussed.
The summary paper of the Tin Strip Project is currently available on the Tin Technology Web site at www.tintechnology.biz/soldertec/soldertec.aspx?page_id=1607&SelectedMenu_ID=-1.More information on the EIPC Conference can be found at www.eipc.org.Tin Technology is a membership-based organization involved in the research, development and marketing of tin-based technologies.