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| Number | Title | Issue Date |
| 4239973 | Device for the surface treatment of film webs by means of electrical corona discharge Disclosed is a device for the surface treatment of film webs by means of an electrical corona discharge, comprising: at least one grounded counter-electrode comprised of a point electrode; at least one roll electrode rotatably positioned adjacent to said ... | 12/16/1980 |
| 4236954 | Label applicator A label applicator for an injection moulding machine which includes a suction head for picking up a label, an electrostatic charging device to electrostatically charge the label and means to reverse the suction to transfer the label to the face of a die w... | 12/02/1980 |
| 4233014 | Apparatus for preparing a nonwoven web A process and apparatus for forming a non-woven web in which a bundle of untwisted filaments are charged upstream of a pair of elastomer-covered counter rotating squeeze rolls and propelled through the nip of the rolls to a moving laydown belt with the as... | 11/11/1980 |
| 4230650 | Process for the manufacture of a plurality of filaments A method and apparatus for making filaments and a fibrous product of randomly overlying filaments in a mat configuration bonded to each other at areas of intersection. The filaments are formed by subjecting a travelling layer of a settable, dielectric, mo... | 10/28/1980 |
| 4215682 | Melt-blown fibrous electrets A persistent electric charge is introduced into melt-blown fibers during the melt-blowing process. When these charged fibers are incorporated into fibrous webs, they provide unique properties, including improved filtering properties.... | 08/05/1980 |
| 4208366 | Process for preparing a nonwoven web A process and apparatus for forming a non-woven web in which a bundle of untwisted filaments are charged upstream of a pair of elastomer-covered counter rotating squeeze rolls and propelled through the nip of the rolls to a moving laydown belt with the as... | 06/17/1980 |
| 4174365 | Continuous method for making hoses with destruction of horizontally disposed mandrel A process for the continuous production of a hose formed and vulcanized on a mandrel, comprising continuously forming and advancing a hollow mandrel, continuously forming said hose about said mandrel and continuously vulcanizing said hose while advancing ... | 11/13/1979 |
| 4166089 | Corona free pinning of extruded polymer film The adhesion or pinning of an extruded film forming polymer to a moving quenching member is improved, in the absence of corona discharge, by maintaining the quenching member at an electrical potential while the extrusion die is grounded, one magnitude of ... | 08/28/1979 |
| 4162139 | Casting of polymeric film AC electrostatic-pinning for the casting and quenching of polymeric film, especially polyethylene terephthalate film.... | 07/24/1979 |
| 4157236 | Electrostatic dry former A method and apparatus for dry forming a paper, or other nonwoven web, from fibers or fiber flocs. The flocs or bundles are exposed to an oscillating electrostatic field, the resultant mechanical agitation shakes individual fibers loose, which then fall t... | 06/05/1979 |
| 4148595 | Coating for aerodynamic shield in apparatus for making non-woven web The aerodynamic shield members of the apparatus for electrostatically charging fibrous material disclosed in U.S. Pat. No. 3,860,369 are coated with a material having a resistance of between 5× 1012 and 1014 ohms/sq to reduce arcing... | 04/10/1979 |
| 4147488 | High frequency apparatus for forming structural shapes Apparatus and method for the continuous manufacture of structural shapes are disclosed. Mineral fiber material in the form of continuous strands, webs, or mats, impregnated with a heat-hardenable resin, is passed through a dielectric heater. The material ... | 04/03/1979 |
| 4113812 | Method of forming a composite mat of directionally oriented lignocellulosic fibrous material The description describes a process for forming a composite mat of directionally oriented lignocellulosic material in which elongated small pieces of the material are caused to descend individually as separate and discrete objects through an electric fiel... | 09/12/1978 |
| 4111625 | Polymeric film production Quenching molten polymeric films, especially polyester films, on casting surfaces by means of a combination of electrostatic and suction pinning.... | 09/05/1978 |
| 4046842 | Casting of polymeric film AC electrostatic-pinning for the casting and quenching of polymeric film, especially polyethylene terephthalate film.... | 09/06/1977 |
| 4028032 | Apparatus for precision electrostatic pinning An apparatus for the precision positioning of electrostatic pinning means. The electrostatic pinning means, which significantly improves pinning of a thermoplastic polymeric film cast upon a moving surface, by electrostatic force, is precisely positioned,... | 06/07/1977 |
| 4017575 | Production of a flat thermoplastic film by passing the film over a bearing having a lubricating fluid on the surface thereof In the casting of molten thermoplastic web onto a moving quenching surface, the improvement which comprises passing the freshly extruded web over a bearing having a lubricating fluid on the surface thereof.... | 04/12/1977 |
| 4009508 | Method for forwarding and charging a bundle of filaments Method for charging and forwarding a group of filaments to a web formation zone wherein an attenuator forwards the group of filaments along a path into impingement with a target electrode positioned downstream from the attenuator and in the filament path,... | 03/01/1977 |
| 4008021 | Apparatus for forming a sinterable compact of a powder An apparatus for forming a sinterable compact of a powder comprises a pair of respective shafts displaceable toward one another by the action of respective cams and serving to displace opposing ram members to compact a powder between them. Respective plat... | 02/15/1977 |
| 3995979 | Apparatus for lubricating moulds for blanks An apparatus for lubricating the internal wall of moulds for blanks comprises a corona charger for charging electrically the lubricant which is then injected into the mould. This latter is maintained at an electric potential such as to attract the lubrica... | 12/07/1976 |
| 3982863 | Quenching of polymeric film In the electrostatic pinning of molten polymeric film, especially polyethylene terephthalate film, to a quenching drum, the insulators for those parts of the pinning electrode positioned outside the edges of the film are adjusted to follow the transverse ... | 09/28/1976 |
| 3954364 | Method and apparatus for forming boards from particles Method and apparatus for forming boards and slats by consolidation of a mat of individual elongated fibers and particles which are preliminarily aligned or oriented in the same direction by free-fall through an electric field in order to achieve the desir... | 05/04/1976 |
