Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1994-08-04
1995-10-24
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
219240, 222DIG1, 355260, B32B 3500
Patent
active
054606748
ABSTRACT:
An original equipment type seal for recharged toner cartridges can be installed without splitting the cartridge itself, by screening a border of "hot-melt" type adhesive, preferably wax-based, onto a strip of polyester, the adhesive being capable of softening or melting at a temperature above the softening or coagulating point of the toner powder itself, but below the softening points of the plastic components of the cartridge. The polyester seal is inserted into the cartridge with the aid of a room temperature or even cold, metallic insertion tool, preferably made of a high magnetic permeability steel. Heating this cold tool, or subsequently inserting a hot tool, will cause the adhesive to melt and seal the cartridge. In those areas of the cartridge where there is little or no significant pressure to assure firm contact with the adhesive, the insertion of a "pressure tool" incorporating a magnet, into the fill hole in the cartridge, where the magnet portion is brought in close proximity to the steel insertion tool, allows one to push and/or pull the insertion tool surface so as to bring about an intimate contact between the adhesive on the seal and cartridge surfaces to be sealed. The utilization of wax-based adhesives and a cold, and then heated, insertion tool, together with a magnetic pressure tool is the preferred embodiment, but the use of other hot-melt-type adhesives and insertion tools are possible within the purview of this invention.
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Ball Michael W.
Stemmer Daniel J.
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