PROCESS FOR MAKING RIGID POROUS PLASTIC TUBULAR FILTERS
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United States of America Patent
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Issued Date -
Jul 2, 2015
app pub date -
Dec 31, 2013
filing date -
Dec 31, 2013
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Abandoned
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Abstract
A method of making a rigid filter. An elongate mandrel is provided. A polymer material is melted. The polymer material is formed into a molten fiber. The molten fiber is moved to the mandrel. Successive layers of fibers are accumulated about the mandrel and along the elongation of the mandrel to form a fiber accumulation. The fiber accumulation has pores extending between the fibers and having an exterior and a hollow interior. The fiber accumulation is solidified so that the fiber accumulation is rigid with the pores, the exterior and the hollow interior being present such that fluid can proceed between the exterior and the hollow interior through the pores and particulate is blocked by the fiber accumulation.
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