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CONTAINER CAP COVER FOR THE ENVIRONMENTAL RECOVERY AND RECYCLING OF SOLDER PASTE

IP.com Disclosure Number: IPCOM000009695D
Original Publication Date: 2000-Jan-01
Included in the Prior Art Database: 2002-Sep-11
Document File: 3 page(s) / 103K

Publishing Venue

Motorola

Related People

Christopher Martin Keely: AUTHOR

Abstract

This paper concerns the need for the safe and environmental disposal of waste solder paste from the screen printing process in electrical and elec- tronic equipment manufacturing. A versatile solu- tion is proposed in which the solder paste tube con- tainer cap is modified to allow easy paste removal with the efficient and safe deposition of the paste back into the original tube. This tube can then be returned to the vendor and/or dispatched to an authorized hazardous waste disposal handler.

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M-LA Technical Developments

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CONTAINER CAP COVER FOR THE ENVIRONMENTAL

RECOVERY AND RECYCLING OF SOLDER PASTE

by Christopher Martin Keely

ABSTRACT

  This paper concerns the need for the safe and environmental disposal of waste solder paste from the screen printing process in electrical and elec- tronic equipment manufacturing. A versatile solu- tion is proposed in which the solder paste tube con- tainer cap is modified to allow easy paste removal with the efficient and safe deposition of the paste back into the original tube. This tube can then be returned to the vendor and/or dispatched to an authorized hazardous waste disposal handler.

INTRODUCTION

  In the electronics industry, solder paste waste has been identified as a key environmental concern and health risk. Tin-lead solder paste is used exten- sively for screen printing applications. The process normally involves the removal of the paste for a container tube, its application onto the printing sten- cil and, after processing the residual paste is removed for disposal.

PROBLEMS TO BE SOLVED

  In current applications after screen printing the residual solder paste is removed from the stencil and

placed into a container. This container is not the original supplier package and as such, they are cost- ly, result in more lead contamination of containers

and produce a wider variably in containers/liners being returned to the hazardous waster handler/recy- cler. In addition, the original container would still contain residue paste and must also be returned for disposal. This clearly results in more waste (both plastic and paste) being generated. The non-stan- dardization of container reduced the potential for automated removal/tube cleaning operations and increases the likelihood of human operator expo- sure....