Abstract:
A method of manufacturing a liquid medium containing composite ultrafine particles comprises the steps of preparing a dispersion medium that is a liquid medium in which ultrafine particles of different materials from each other are dispersed, introducing the dispersion medium into first and second chambers, respectively, applying high frequency voltage to the chambers and exciting dispersion media, applying direct current voltage to each dispersion medium on the downstream side than the applying position of the high frequency voltage and electrifying these in different polarities from each other, and aggregating/bonding by means of excitation transfer as well as electrostatically aggregating ultrafine particles each other in the liquid medium in the crashing field by injecting the dispersion media electrified in different polarities from each other through two nozzle sections at a high speed, and crossing/crashing each other.
Abstract:
This invention provides a process for rapid forming of a ceramic green part. It is based upon an effect, that nano-scaled oxide colloid can be gelled by drying. Slurry can be obtained by mixing the oxide colloid with ceramic powder and dissolved agent. After paving a slurry film on a platform, a focused high-energy beam scans over the surface of said slurry film; the irradiated portion will be dried and build a two-dimensional (2-D) pattern. In addition, another slurry film is paved on the finished 2-D pattern layer. The high-energy beam scans once more on slurry film locally; another 2-D pattern is built. This built pattern can be connected with the pattern beneath it. After multiple repetitions of this procedure a three-dimensional (3-D) part can be formed. Because gelling is an irreversible reaction, the gelled portion of slurry won't be dissolved in water. Therefore, the non-gelled slurry can be separated from the gelled ceramic green part by flushing.
Abstract:
The use of a compound of formula (A), which comprises a group of sub-formula (I) where R1, R2, R3, R4, R5, R6, X1 and Y1 are various specified organic groups wherein at least one of said groups has sufficient electron whitdrawing properties to activate the multiple bonds to polymerisation, in a stereolithographic composition. Stereolithographic applications of these compounds are also described and claimed. 1
Abstract:
A method and apparatus for calendering polymeric vinyl films exhibiting high gloss and structural stability. Specifically, the invention presents a method and apparatus for calendering polyvinyl chloride film of such a nature. In accordance with the invention, a casting sheet is interposed within the calendering head wherein a blend of polyvinyl chloride resin is formed, in standard fashion, into a continuous film web. In accordance with one embodiment of the invention, the casting sheet, preferably of heat resistant polyester film, is introduced into a nip between existent processing rolls near the end of the processing head. Alternatively, a separate nip may be provided by the addition of a separate roll in juxtaposition to a final roll in the calendering head. In either instance, the casting sheet is forcefully applied to the polyvinyl chloride film prior to engagement with the embossing rolls of the manufacturing process.
Abstract:
The invention relates to a method of producing an agglomerate of drug and solid binder. The process involves producing individual agglomerate particles and then converting the convertible amorphous content of same, following agglomeration, by the application of, for example, moisture. Agglomerates capable of conversion as well as the finished agglomerates and oral and nasal dosing systems including same are also contemplated. The process produces agglomerates which are rugged but which will produce an acceptable fine particle fraction during dosing.
Abstract:
A filter plate for use in biological or chemical applications, and its method of manufacture, are disclosed. The filter plate comprises a plurality of structurally interconnected wells which comprise a matrix of wells having a uniform diameter, each well having a side wall which defines a vertically extending, generally cylindrical cavity; a bottom wall which closes the cavity, the bottom wall having a drainage opening formed therein; a filter sheet extending across and resting on top of the bottom wall; the filter sheet being irremovably fixed in position as a result of engagement with the side wall; a conical nozzle having an external surface and an internal passage communicating with the drainage opening in the bottom wall; and a membrane supporting surface across the internal passage extending from the walls of the internal passage to a plane normal to the bottom wall.
Abstract:
A thermal interface material for interfacing with at least a first surface. One embodiment of the thermal interface material includes a plurality of thermally conductive, malleable fibers arranged in a pattern. The fibers contact each other so as to reduce air gaps and fill irregularities when the fibers are compressed against the first surface.
Abstract:
Stripped porous polymer film and a method for making such film from substantially heterogeneous porous polymer film are described. The heterogeneous film has surface characteristics that are different from the characteristics of the interior bulk material, and the method comprises mechanically stripping at least a portion of at least one surface layer from the heterogeneous film. The stripped porous polymer film may be incorporated into composite membranes. Such composite membranes are particularly suitable for incorporation into membrane electrode assemblies for use in electrochemical cells, including electrochemical fuel cells.
Abstract:
Low density composite particles made of a binder and filler material are provided for use in subterranean formations. The filler includes low density filler and optionally other filler. The binder includes a polymer and optionally cement. The particles may be employed as proppants useful to prop open subterranean formation fractures. The particles are also useful for gravel packing in subterranean formations, water filtration and artificial turf for sports fields. Methods of making the composite particles are also disclosed.
Abstract:
Method for forming an air laid fibrous web, wherein an air born fiber stream is laid on a web shaped forming member, such as at wire (12;17), and the air laid fibrous web is bonded together. The air laid fibrous web is fed between two web-shaped forming members (11,12;17,18;19,20) and bonding of the fibrous web takes place either when this is located between the two web-shaped forming members or immediately after one forming member has left the fibrous web.