Temporary Product Transfer System Using a "Molded Pocket" Design
Original Publication Date: 2002-Sep-30
Included in the Prior Art Database: 2003-Jun-21
Disclosed is an improved method of manufacturing magnetic recording heads. Present methods of manufacturing magnetic recording heads include mounting a row of sliders or individual sliders on a transfer tool assembly. The usual method of attachment is to use an adhesive. Subsequently, the sliders must be debonded using techniques such as high temperature, ultrasonics, megasonics, agitation, mechanical brushing or acoustics. These methods are lengthy (up to 4 hours) and commonly leave a residue of chemical contamination which must be removed. Typically the adhesives have been fully cross linked exacerbating the debond process. The method disclosed herein uses a temporary “process tray” that is formed around and encapsulates the row or slider. The temporary process tray could also be called a molded pocket. Thus, only the sides of the row or slider that require processing are exposed. The material used to form the tray may be selected from silicone, polyurethane, or the like. After processing the temporary process tray, which is not cross linked to the row or slider, is easily removed. Thus the debond process step is rapid and leaves little chemical residue. A matrix shim or other means is used to hold the row or sliders in place as the temporary process tray is formed. The mechanical attributes of the matrix shim are chosen to ease the subsequent handling of the row or slider after removal of the tray material. Once processing is complete, the molded pockets are removed in one continuous sheet.