摘要:
Capsules, for example for the delivery of pharmaceuticals, are produced from at least three films (12, 13, 14) of a water-soluble polymeric material, by deforming two of the films (12, 14) to form a multiplicity of recesses, and filling the recesses (18, 32) with a flowable filling material. A film (13) is used to cover the recesses (18) in at least one of the films (12), and is welded to it by dielectric welding. The films with filled recesses are then brought together and welded together by dielectric welding to form filled capsules, which are cut or punched out of the welded film. The polymeric material may be gelatin, or a water-soluble cellulose derivative such as hydroxypropyl methyl cellulose, and may also contain a plasticiser.
摘要:
Capsules, for example for the delivery of pharmaceuticals, are produced from two films (18) of a water-soluble polymeric material, by deforming the films to form a multiplicity of recesses, and filling the recesses, using two adjacent rotary dies (14, 15; 42) with recesses (16) into which the films (18) are deformed. The dies (14, 15; 42) act as electrodes for welding the films together by dielectric welding to form filled capsules (30). The capsules (30) can be separated from the resulting web either by coating at least one of the dies (14) with an electrical insulator (21), or by transferring the web from the dies (14, 15; 42) to a second pair of dies which cut the capsules (30) free. The polymeric material may be gelatin, or a water-soluble cellulose derivative such as hydroxypropyl methyl cellulose, and may also contain a plasticiser.
摘要:
Capsules, for example for the delivery of pharmaceuticals, are produced from two films (18) of a water-soluble polymeric material, by deforming the films to form a multiplicity of recesses, and filling the recesses, using two adjacent rotary dies (14, 15; 42) with recesses (16) into which the films (18) are deformed. The dies (14, 15; 42) act as electrodes for welding the films together by dielectric welding to form filled capsules (30). The capsules (30) can be separated from the resulting web either by coating at least one of the dies (14) with an electrical insulator (21), or by transferring the web from the dies (14, 15; 42) to a second pair of dies which cut the capsules (30) free. The polymeric material may be gelatin, or a water-soluble cellulose derivative such as hydroxypropyl methyl cellulose, and may also contain a plasticiser.
摘要:
The present invention is generally directed toward a method of measuring surfactant penetration into a foam layer of a filter for an air filter assembly. The method comprises the addition of a dye to a surfactant, adding the dye laden surfactant to the foam layer, illuminating the foam layer after the dye laden surfactant has been added, observing the amount of illumination, and determining the amount of surfactant penetration by the amount of illumination of the foam layer.
摘要:
A system that enables enhanced air flow to the air intake of an internal combustion engine having a turbocharger is disclosed. The air induction system includes a plenum or expansion chamber located within the area directly in front of the inlet of the turbocharger. Alternatively, the air induction system may include a means for reducing the velocity of the air flow within the clean air duct in an area directly in front of the inlet of the turbocharger.
摘要:
A dielectric welding apparatus for welding a plastic sleeve contains a solid state radio frequency generator linked via a matching network to a welding tool. The tool (30) includes a frame (35) with a handle (36), the frame defining a slot in which are opposed welding electrodes (40, 44), the slot being open at one end and at the other end communicating with a wider aperture (39). A pneumatic cylinder (48) can be actuated to urge the electrodes together, both the cylinder (48) and the RF generator (66) being activated by a trigger (50) on the tool (30). The electrodes are coated with an electrically insulating material that is not dielectrically heated, and are readily removable, so they can be replaced, for example when the electrically insulating coating becomes worn.
摘要:
A filtration device is disclosed having a filter element and two housing shells, wherein one of the housing shells has a flange with a protuberance and the other housing shell has a flange with an indentation. The filter element has a flange peripheral portion compressed in the joint between the flanges.
摘要:
A hydrocarbon adsorption assembly is shown, wherein the hydrocarbon adsorption assembly is disposed in an encapsulating layer adapted to be received by an air filter of an automobile.
摘要:
A hydrocarbon adsorption assembly is shown, wherein the hydrocarbon adsorption assembly is disposed in an encapsulating layer adapted to be received by an air filter of an automobile.