Abstract: A multi-faceted family of non-woven webs that can take the form of a filter media, an adaptable forming process and a machine capable of making the range of media are disclosed. The filter medium can have a first surface and a second surface defining a thickness. The medium can comprise a region having a gradient. Such a gradient is formed by having a medium wherein the concentration of a fiber, a property or other component varies from one surface to the next surface. The gradient region of the media can comprise the entire thickness of the medium or can comprise a region that comprises a portion of the media thickness. The media are characterized by the presence of a continuous change of the fiber concentration or property within the region. A non-woven web can also be made comprising a planar fiber structure having a gradient. Such a web can comprise fibers having diameters that can range from 1 to 40 microns and a second fiber having a diameter that can range from 0.5 microns to about 5 microns.

Abstract: A shake mechanism is provided for shaking a breast roll at the wet end of a conventional glass mat machine. A method of producing a glass fiber mat is provided, the method involving combining glass fibers with a dispersant medium to form an aqueous slurry, and shaking the aqueous slurry to redistribute fibers from areas of high concentration to areas of lower concentration. A glass fiber mat production line is also provided, the production line comprising a slurry formation station for combining glass fibers with a dispersant medium to form an aqueous slurry, and a hydroformer for shaking the slurry to redistribute glass fibers from areas of high concentration to areas of lower concentration.

Abstract: A shake mechanism is provided for shaking a breast roll at the wet end of a conventional glass mat machine. A method of producing a glass fiber mat is provided, the method involving combining glass fibers with a dispersant medium to form an aqueous slurry, and shaking the aqueous slurry to redistribute fibers from areas of high concentration to areas of lower concentration. A glass fiber mat production line is also provided, the production line comprising a slurry formation station for combining glass fibers with a dispersant medium to form an aqueous slurry, and a hydroformer for shaking the slurry to redistribute glass fibers from areas of high concentration to areas of lower concentration.

Abstract: The invention comprises a wide range of pierceable and memory-recloseable septa cover for multi-well plates for PCR or other small sample well processes, where such seals are joined into an easily applied or removed sheet or otherwise joined means. A reaction chamber well comprises a liquid level portion at the bottom that contains the various levels of reaction liquid, a super-liquid portion comprising the gas volumes above the reaction liquid. In one form of the invention embodiments, the cover comprises a gas tight seal between the cover and the side of the well substantially above the liquid level, thereby forming the super-liquid space. The disturbance, pressure change and/or gas exchange in this small gas space results in a rather dramatic potential change in reaction or mixing results. The invention cover reduces each of these to a minimum not attainable in the prior art.

Abstract: Electrically conductive sealing elements include a resilient grommet portion and an electrically conductive portion imbedded in a portion of the grommet so as to provide EMI protection and/or an electrically conductive path from a workpiece to a panel into which the grommet can be inserted.