216 results about "Water vapor permeation" patented technology

A novel densified fluoropolymer article is described which has a water vapor permeation of about 0.015 g-mm / m2 / day or less, and preferably has a matrix tensile strength of at least 10,000 psi in two orthogonal directions. The articles are made by compressing expanded porous PTFE at pressures, temperatures and times which result in elimination of the pores, and subsequent stretching above the crystalline melt temperature.

A self-adhering air and moisture barrier sheet membrane for structural surfaces of buildings, which is permeable to the passage of water vapor, is comprised of a water vapor permeable sheet onto one surface of which is applied an adhesive in a non-continuous film.

A portable measuring system which analyzes a liquid sample for at least one analyte. The portable measuring system has a substantially moisture-proof housing with an internal atmosphere. The housing prevents moisture from the air and water vapor from penetrating into the housing. The portable measuring system also has at least one test element support inserted into the internal atmosphere of the housing. The test element support is equipped with a retaining structure and a test element that is supported by the retaining structure. The test element support is designed such that, after insertion into the internal atmosphere, the test element is exposed to the internal atmosphere. A release mechanism is also provided which can convey at least one test element into an application position within the internal atmosphere of the housing. In this application position, the liquid sample can be applied to the test element.

A folded wall anchor and an anchoring system employing the same are disclosed. The anchor is a folded sheetmetal construct utilizable with various wire formative veneer ties. The folded wall tie enables the junctures of the legs and the base of the wall anchor to be located inboard from the periphery of the wall anchor and the legs to fully or partially sheath the mounting hardware. The sheathing function unifies the openings in the insulation required for installation and forms an anchoring system that is less intrusive. Upon installation with the surfaces of the enfolded leg and of the base coplanar, the leg and mounting hardware insertion point is sealed thereby. This sealing precludes penetration of air, moisture, and water vapor into the wall structure. Various embodiments show wall anchor configurations with suitable veneer ties and differing sheathing arrangements.

A tubule assembly for thermally isolating a surface-mounted wall anchor and an anchoring system employing the same are disclosed. The thermally-isolated tubule assembly is adaptable to varied anchor structures and for use with interlocking veneer ties and reinforcement wires to provide a high-strength surface mounted anchoring system for cavity walls. The stepped cylinders sheath the mounting hardware to limit insulation tearing and resultant loss of insulation integrity. The tubule assembly is thermally-isolated through the use of a series of strategically placed compressible nonconductive fittings and set within the perimeter of the anchor base. Seals are formed which preclude penetration of air, moisture, and water vapor into the wall structure.

An object of the present invention is to provide a humidifying apparatus capable of improving the humidification efficiency while lowering the pressure loss of gas even when a low-pressure gas is used, and is suitably usable for fuel cells. The present invention relates to a humidifying apparatus for fuel cells, fabricated by loading a hollow fiber membrane element into a container such that the space communicating with the hollow side of the hollow fiber membranes is isolated from the space communicating with the outer side of the hollow fiber membranes, wherein (a) the inner diameter of the hollow fiber membrane is larger than 400 μm, (b) the water vapor permeation rate (P′H2O) of the hollow fiber membranes is 0.5×10−3 cm3 (STP) / cm2·sec·cm Hg or more, (c) the ratio (P′H2O / P′O2) of the water vapor permeation rate to the oxygen gas permeation rate of the hollow fiber membranes is 10 or more, and (d) the elongation at tensile break of the hollow fiber membranes after hot water treatment in hot water at 100° C. for 50 hours is 80% or more of that before the hot water treatment; particularly, the present invention relates to a humidifying apparatus for fuel cells where, if the effective length of the hollow fiber membrane element is L and the inner diameter of the container into which the hollow fiber membrane element is loaded is D, L / D is 1.8 or more.

A novel densified fluoropolymer article is described which has a water vapor permeation of about 0.015 g-mm / m2 / day or less, and preferably has a matrix tensile strength of at least 10,000 psi in two orthogonal directions. The articles are made by compressing expanded porous PTFE at pressures, temperatures and times which result in elimination of the pores, and subsequent stretching above the crystalline melt temperature.

An organic light emitting device is disclosed. The organic light emitting device includes a first substrate, a display unit that is positioned on the first substrate and includes a plurality of subpixels, a second substrate facing the first substrate, a seal member attaching the first substrate to the second substrate, and at least one projection. The seal member substantially has a water vapor permeation rate of 100 g / m2 day to 103 g / m2 day. The projection is positioned at a location corresponding to a bezel area of at least one of the first and second substrates.

A high-strength thermally-isolating surface-mounted anchoring system for a cavity wall is disclosed. The thermally-isolated anchoring system is adaptable to varied structures, including high-span applications, and for use with interlocking veneer ties and reinforcement wires. The anchoring system includes an anchor base and a stepped cylinder which sheaths the mounting hardware to limit insulation tearing and resultant loss of insulation integrity. The anchoring system is thermally-isolated through the use of a series of strategically placed compressible nonconductive fittings. Seals are formed which preclude penetration of air, moisture, and water vapor into the wall structure.