Abstract:
Methods for making medical devices having porous coatings. Methods may comprise providing a tubing section having inner and outer surfaces and positioning a nozzle proximate to a target surface of the parent tubing section. A powder form of the porous coating may be delivered toward the tubing section, and a laser may be directed at the powder to melt the powder to form a melt pool. The melt pool can solidify to form the porous coating on the target surface. Portions of the parent tubing section may then be cut away to form the support structure of the medical device, such as a stent.
Abstract:
A method of processing a substrate comprising a) supporting a substrate having a hydrophilic surface in a substantially horizontal orientation, b) rotating the substrate, c) applying a film of an aqueous solution of HF to the hydrophilic surface of the substrate for a period of time sufficient to convert the hydrophilic surface into a hydrophobic surface, wherein the concentration of HF is between about 0.1% to about 0.5% by weight of HF in water and the period of time is between about 100 and about 300 seconds, d) applying DI water to the hydrophobic surface of the substrate, and e) applying a drying fluid to the hydrophobic surface of the substrate so as to substantially dry the hydrophobic surface. The invention also is an apparatus for processing a substrate comprising a chamber having at least one wall, a rotary support member located within the chamber for supporting the substrate in a substantially horizontal position and adapted to rotate the substrate, and a first exhaust exit located within the at least one wall, wherein the first exhaust exit is tangential to a rotational direction of the substrate.
Abstract:
A material film forming method is provided which comprises coating a liquid material on a surface of a substrate to form a material film of the liquid material the on the surface of the substrate, while rotating the substrate, and drying the material film, while rotating the substrate and letting air or nitrogen gas blow onto a predetermined area of the material film.
Abstract:
A material film forming method is provided which comprises coating a liquid material on a surface of a substrate to form a material film of the liquid material the on the surface of the substrate, while rotating the substrate, and drying the material film, while rotating the substrate and letting air or nitrogen gas blow onto a predetermined area of the material film.
Abstract:
The present invention is a film forming method for forming a film of a coating solution on a substrate, comprising the steps of spreading the coating solution supplied to a center of the substrate by rotating the substrate, and supplying solvent vapor of the coating solution to the coating solution spread over the substrate while rotating the substrate to thin the film of the coating solution formed on the substrate. Accordingly, it becomes possible that the film of the coating solution which is formed by spreading the coating solution over the substrate is maintained at a low viscosity, and that the film can be further thinned. The necessary quantity of the coating solution can be also reduced. Moreover, since solvent vapor is supplied onto the coating film, by controlling the supply quantity or the supply position of the solvent vapor, the uniformity of the coating solution film can be obtained, and the thickness of the coating solution film can be controlled.
Abstract:
A METHOD FOR PRODUCING COMPOSITE LAMINATED ARTICLES BY EXTRUDING A THIN FILM OF MELTED RESIN SUCH AS POLYETHYLENE, POLYPROPYLENE, AND THE LIKE, ONTO A BASE MATERIAL SUCH AS PAPER, METALLIC FOIL AND THE ILKE, THE MELTED RESIN BEING EXTRUDED AT ITS OXIDIZING TEMPERATURE WHEREBY THE SURFACE OPPOSITE TO THE SURFACE TO BE BONDED TO THE BASE MATERIAL OF THE EXTRUDED FILM IS COVERED BY INERT GAS WHILE THE BONDING SURFACE IS OXIDIZED BY THE AIR SUCH THAT THE NON-BONDING SURFACE IS PREVENTED FROM BEING OXIDIZED BY THE AIR. BY THIS METHOD, A LAMINATED COMPOSITE ARTICLE HAVING SUPERIOR ADHERING PROPERTIES BETWEEN THE RESIN FILM AND THE BASE AND HAVING SUPERIOR HEAT SEALING PROPERTIES, WITHOUT OFFENSIVE ODORS, IS OBTAINED. APPARATUS FOR CARRYING OUT THE ABOVE-MENTIONED METHOD WHEREIN MEANS PROVIDING AN APPARATUS FOR ISSUING INERT GAS IS PROVIDED ADJACENT TO THE MOUTH PIECE OF THE RESIN EXTRUDER.
Abstract:
A METHOD FOR COATING AN ARTICLE WITH A CONTINUOUS POLYMERIC FILM INCLUDING THE STEPS OF (A) DEPOSITING AND ADHERING A LAYER OF POLYMERIC MATERIAL IN PARTICULATE FORM TO THE ARTICLES EXTERIOR SURFACE, (B) MAINTAINING THE COATED ARTICLE AT A TEMPERATURE BELOW THE BOILING POINT OF A SELECTED COMPOSITION WHICH IS A SOLVENT FOR THE POLYMERIC MATERIAL AT ITS BOILING POINT AND WITHIN A TEMPERATURE RANGE BELOW ITS BOILING POINT, AND (C) EXPOSING THE ARTICLE TO AN ATMOSPHERE CONTAINING THE SELECTED COMPOSITION IN VAPOR FORM, WHEREBY THE VAPORS CONDENCE ON THE SURFACE OF THE ARTICLE AND CAUSE THE POLYMERIC MATERIAL TO FUSE AND FORM A CONTINUOUS FILM ON THE SURFACE OF THE ARTICLE.
Abstract:
This disclosure relates to a substrate treating method and a treatment liquid. The substrate treating method includes a treatment liquid supplying step, a solidified film forming step, and a sublimation step. In the treatment liquid supplying step, a treatment liquid is supplied to a substrate. The treatment liquid contains a sublimable substance, a solvent, and a surfactant. In the solidified film forming step, the solvent and the surfactant evaporate from the treatment liquid on the substrate. In the solidified film forming step, a solidified film containing the sublimable substance is formed on the substrate. In the sublimation step, the solidified film sublimates. The surfactant has an octanol-water partition coefficient LOGPow of −1 or more and 1 or less. Vapor pressure Pc of the surfactant at room temperature is 0.9 times or more and 3 times or less vapor pressure Pb of the solvent at room temperature.