Die, Blade, Or Sharp-edged Tool Patents (Class 427/356)
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Patent number: 6319552Abstract: A fountain applicator for applying coating liquid onto a web of paper carried past the applicator, has a coating liquid flow path that includes a curved surface along which a sheet of the coating liquid is flowed to subject the sheet to centrifugal force to cause air entrained in the coating liquid to move away from one side of the sheet that is toward the curved surface, so that the one side is relatively free of entrained air. After being flowed along the curved surface, the sheet of coating liquid is directed toward the web in a free standing jet curtain of coating liquid, to contact the web surface primarily with the one relatively air-free side of the coating liquid sheet to decrease the occurrence of skip coating on the web surface, especially when the web is traveling past the applicator at high speeds. The coating is applied in excess onto the web surface and is metered and leveled to a desired coat weight by a downstream doctor.Type: GrantFiled: August 10, 1999Date of Patent: November 20, 2001Assignee: Stora Enso North America Corp.Inventor: Wayne A. Damrau
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Publication number: 20010036595Abstract: A clearance between an upper knife and a lower knife of a slitter is set at 30 to 100 &mgr;m, and the slitter cuts a sensitized printing plate. In the sensitized printing plate cut by the slitter, there is a shear droop which is 20 to 30 &mgr;m high at the cut part, and a burr which is less than 50 &mgr;m high. If the maximum height of a surface roughness of a cut surface of the sensitized printing plate is 1.2 &mgr;m to 12 &mgr;m on the average, a hydrophilic property of the cut part improves and the stain of a frame can be decreased.Type: ApplicationFiled: May 3, 2001Publication date: November 1, 2001Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yasuhiro Annoura, Takanori Masuda, Koichiro Aono, Tsutomu Kato
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Patent number: 6309692Abstract: A substrate is placed on a support surface of a table. The support surface has a flatness of 2 &mgr;m or less. The table has a plurality of holes in the surface. A vacuum is created in the holes to bring the substrate into close contact with the support surface. This eliminates deformations of the substrate, such as twisting and curving. A coating die is moved above the table to apply a coating material onto the substrate. Consequently, a coating having a constant thickness is formed on the substrate.Type: GrantFiled: July 22, 1998Date of Patent: October 30, 2001Assignee: Chugai RO Co., Ltd.Inventors: Masahiro Nakamura, Takuya Yokoyama, Tsutomu Nishio
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Patent number: 6306461Abstract: A method and apparatus for coating a paper or a paper board web, comprising spreading coating mix having a solids content of 55-75% on the surface of the web with a nozzle applicator, levelling and metering the spread coating mix on the surface of the web by a doctor element capable of producing a high hydrodynamic force on the coating layer between the doctor element and the web, the doctor element being located downstream of the applicator so that the dwell time between the spreading of the coating mix to the metering is 72-2400 ms. The web speed is preferably 100-1000 m/s. A good smoothness and coverage is achieved by this method due to long dwell time.Type: GrantFiled: December 17, 1999Date of Patent: October 23, 2001Assignee: Valmet CorporationInventors: Mika Leino, Stig Renvall, Stefan Kuni, Petri Paloviita
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Patent number: 6303187Abstract: A method and apparatus for producing paperboard, the method comprising the steps of applying a coating mix layer having a thickness greater than that of the final coat thickness to the surface of the web being coated using a coating mix formulation in which the solids content is at least 55%, passing the web with the coat applied thereto to a doctor blade located downstream in the travel direction of the web at a distance from the applicator apparatus such that the dwell time from the application step of the coating mix to the doctoring step is at least 130 ms, and smoothing the coat layer to its final thickness by means of a doctor blade. By this method a smooth surface can be obtained even on high coat weights.Type: GrantFiled: November 23, 1999Date of Patent: October 16, 2001Assignee: Valmet CorporationInventors: Mika Leino, Stefan Kuni, Jukka Linnonmaa, Jaana Ahlroos, Erja Nikula
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Patent number: 6291017Abstract: A method for coating a paper or paperboard web with at least two coat layers. The present invention achieves two-layer coating and is capable of providing a smooth coat with high opacifying power. A first coat layer is initially applied to the web. The surface of this first coat layer is smoothed by means of a smoothing element. After smoothing, this first coat layer is partially or entirely dried, and a second coat layer is applied onto the first coat layer using a transfer coater.Type: GrantFiled: March 5, 1997Date of Patent: September 18, 2001Assignee: Valmet CorporationInventor: Rauno Verner Rantanen
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Publication number: 20010021420Abstract: A method and an apparatus for transferring ink, varnish or adhesive during laminating or printing, particularly flexographic printing, operates with a roller in the form of a smooth roller for transferring the material from the smooth roller to a substrate. A plurality of spray modules arranged next to each other and individually controllable is provided for spraying the material onto one or more cylindrical portions of the smooth roller. A doctor blade is arranged following the point of transfer of the material as seen in the direction of rotation of the smooth roller.Type: ApplicationFiled: December 15, 2000Publication date: September 13, 2001Applicant: Manfred Honschuh and Windmoller & Holscher KGInventors: Manfred Hornschuh, Eugen Herzau, Leopold Sudao
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Coating apparatus and method utilizing a diluent and a method for producing a color filter substrate
Patent number: 6287636Abstract: A coating apparatus comprising a plurality of paint supply devices, a mouthpiece for dispensing a paint supplied from the paint supply devices, and a stage for holding a coated object. The mouthpiece comprises a plurality of outlet ports. Also, a coating method comprising relatively moving a mouthpiece and a coated object to coat the coated object with paint in which a diluent is added to the paint to form a paint/diluent mixture upon the start of the coating process. This paint/diluent mixture is used to coat the coated object upon the start of the coating process and until the process reaches a steady state. The flow of diluent is then stopped and the coating process is continued using only the paint in a steady state coating process. The flow of diluent is then started again to form a paint/diluent mixture as the coating process ends. A coating with a highly uniform thickness along the entire length of the coated object is produced by this method.Type: GrantFiled: November 23, 1999Date of Patent: September 11, 2001Assignee: Canon Kabushiki KaishaInventors: Satoshi Kokubo, Nagato Osano, Junichi Sakamoto, Kenichi Iwata -
Patent number: 6284097Abstract: A method of producing paper webs coated on both sides includes the following steps: a) indirectly applying a liquid onto the paper web by passing the web through at least one nip formed by a roll and a counterelement, whereafter the web is dried; b) next, directly applying coating mixture at surplus only on one side of the web, whereafter the surplus coating mixture is removed again by use of a doctor element, the web being dried again thereafter; and c) lastly, directly applying coating mixture at surplus only on the other web side, whereafter the surplus coating mixture is removed by use of a doctor, whereafter the web is dried again. In the indirect application of liquid in the nip, or in the nips, either coating mixture to produce so-called MWC papers or a sizing suspension to produce so-called LWC papers is selectively applied.Type: GrantFiled: February 5, 1998Date of Patent: September 4, 2001Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Hans-Jürgen Wulz, Rüdiger Kurtz, Gerhard Kotitschke, Bernhard Kohl, Peter Petermann, Erhard Gruber
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Publication number: 20010017280Abstract: A three zone, reinforced, continuous, geometrically symmetrical microporous membrane including a porous support material encapsulated within a middle zone disposed between an upper zone and a lower zone wherein at least one of the three zones has a pore size at least about twenty (20%) percent greater than the pore size of the other two zones is disclosed. Apparatus and methods for fabricating three zone reinforced, continuous, geometrically symmetrical, microporous membrane are also disclosed.Type: ApplicationFiled: January 17, 2001Publication date: August 30, 2001Inventors: Mark T. Meyering, Jack H. Vining, C. Thomas Badenhop
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Patent number: 6280574Abstract: The moisture application system of the present invention comprises in combination a first means for applying liquid to a paper web and a second means in contact with the web for scraping off excess liquid and spreading the liquid uniformly across the paper web. The moisture application system of the present invention is particularly useful when combined with a machine calender for finishing a paper web.Type: GrantFiled: April 23, 1999Date of Patent: August 28, 2001Assignee: Westvaco CorporationInventor: Donald G. Bauer
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Patent number: 6258410Abstract: A clearance between an upper knife and a lower knife of a slitter is set at 30 to 100 &mgr;m, and the slitter cuts a sensitized printing plate. In the sensitized printing plate cut by the slitter, there is a shear droop which is 20 to 30 &mgr;m high at the cut part, and a burr which is less than 50 &mgr;m high. If the maximum height of a surface roughness of a cut surface of the sensitized printing plate is 1.2 &mgr;m to 12 &mgr;m on the average, a hydrophilic property of the cut part improves and the stain of a frame can be decreased.Type: GrantFiled: January 22, 1999Date of Patent: July 10, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Annoura, Takanori Masuda, Koichiro Aono, Tsutomu Kato
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Patent number: 6254922Abstract: A coating material and method of manufacture for radiation surfaces which produce electromagnetic waves is disclosed. The coating material consists of 55 to 65% mole fraction of a base material and 35 to 45% mole fraction of graphite. The base material contains a binding agent, insulating agent, dispersing agent, and distilled water mixed together. The binding agent is comprised of distilled water, sulfated oil, phenolene or benzoisothiazolinon, casein, urea, alkali diluent and caprolactam. The method for producing the coating material includes the steps of creating the binding agent, mixing the binding agent with the other base components, and finally, mixing in the graphite. The result is a coating material with a plurality of dipoles that produces a high degree of radiation of electromagnetic waves when in a state of excitation.Type: GrantFiled: November 12, 1999Date of Patent: July 3, 2001Inventor: Helmut Reichelt
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Patent number: 6251484Abstract: An application method of forming a precoat and at least one type of coat sequentially in a wet condition on an application face of a support with an extrusion type coating head of non-pressurizing type having a front edge 3 positioned in the upstream with respect to a move direction of the support and a back edge 4 positioned in the downstream with respect to the support move direction and having an acute-angle tip formed so as to recede in the direction opposite to the support from the tip of the front edge. The difference between values of solubility parameters at application temperature of solvents contained in both the precoat 70 and the coat 50 contiguous to the precoat is made 1.5 or less.Type: GrantFiled: September 15, 1994Date of Patent: June 26, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Akihiro Suzuki, Norio Shibata, Shinsuke Takahashi, Mikio Tomaru
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Patent number: 6231927Abstract: A method of coating a substrate of insulation material with a barrier layer involves spreading a curable liquid on a surface of the insulation using a spreader blade having a composite cross section profile. The profile includes a leading surface that converges toward the substrate surface and a trailing surface that is parallel to the substrate surface. The coating method is useful for fabricating acoustical and thermal energy insulation boards of nonwoven webs of glass fibers and other conventional insulation material. Particular benefit is derived from the method in coating grooved insulation boards for lining curved air conveying ducts with an elastically deformable, flexible coating that covers the board surface between grooves and bridges the grooves while leaving the groove channels open.Type: GrantFiled: June 8, 1999Date of Patent: May 15, 2001Assignee: Certainteed CorporationInventor: John O. Ruid
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Patent number: 6217940Abstract: Method and apparatus for coating a moving paperboard web with at least two coating layers. A first coating layer is applied onto the surface of the web and a second coating layer is applied onto the surface of this first undried coating layer. The first coating layer is applied by means of a film transfer coater and the second coating layer is applied by means of a nozzle applicator, whereby the first layer is neither mixed nor doctored off the web during the application of the second layer.Type: GrantFiled: May 21, 1999Date of Patent: April 17, 2001Assignee: Valmet CorporationInventor: Stefan Kuni
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Patent number: 6210757Abstract: An enclosed pressure gravure roll coating applicator, particularly designed for applying pressure sensitive films to web types substrates, and method of operating such coater. A downstream blade and an arcuately spaced upstream blade are positioned with respect to a roll to be coated. An intermediate gap-forming body between the blades forms a running gap with the surface of the roll to be coated. Substantially air free liquid coating is applied under pressure to an offrunning chamber adjacent the offrunning blade with excess coating flowing through the gap to an onrunning chamber adjacent the upstream blade. The pressure in the onrunning chamber is regulated at a relatively constant positive value sufficient to prevent air from entering the onrunning chamber past the upstream blade.Type: GrantFiled: March 19, 1999Date of Patent: April 3, 2001Assignee: Black Clawson Company, Inc.Inventors: John A. Taylor, Thomas J. Lombardo, Wolfgang L. Schaps
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Patent number: 6205610Abstract: A tool (1) for spreading adhesive over a substrate has a blade edge (4) with a set of spaced large indentations (5) and at least one set of spaced smaller indentations (6) extending into the blade edge. The smaller indentations extend into the blade less than any one of the large indentations and are interspaced between the large indentations. The blade edge is slid over the substrate to which adhesive has been applied and the adhesive is spread such that the large indentations form large ridges (20) of adhesive projecting from the substrate. The smaller indentations form smaller ridges (21) of adhesive projecting from the substrate and the smaller ridges (21) are interspaced between the large ridges (20). When a tile (23) is pressed into the adhesive the larger ridges (20) are compressed first, thereby broadening the ridge and pushing adjacent ridges into the smaller ridges (21). In this any void between ridges is more readily filled and a more uniform spread of keyed in adhesive is achieved.Type: GrantFiled: December 2, 1999Date of Patent: March 27, 2001Inventor: Lee Anthony Westthorp
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Patent number: 6206963Abstract: A nozzle for the application of a fluid to a passing substrate in a bead form.Type: GrantFiled: August 25, 1998Date of Patent: March 27, 2001Assignee: Philip Morris IncorporatedInventor: Siegfried Helmut Abrahams
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Patent number: 6197379Abstract: A multilayer coating method is disclosed. The viscosity of an uppermost layer coating composition is adjusted to at least 0.1 Pa.s during coating, while the viscosity of the other layer coating composition is adjusted to at least 0.03 Pa.s, and a plurality of organic solvent-based coating compositions are coated onto a support employing wet on wet.Type: GrantFiled: June 28, 1999Date of Patent: March 6, 2001Assignee: Konica CorporationInventor: Daiki Minamino
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Patent number: 6187389Abstract: This invention relates to an economical coating composition for porous substrates that provides extremely glossy surfaces, is capable of supporting holographic images, provides good oxygen barrier properties as well as good oil, grease, solvent and water resistance. Said coatings on paper substrates are printable, biodegradable, recyclable, and repulpable. They are also suitable for use in conjunction with food products. This invention also relates to a process for applying said coatings onto porous substrates as well as a process for the economical production of inexpensive holographic images on substrates such as paper and cardboard containers.Type: GrantFiled: May 3, 2000Date of Patent: February 13, 2001Assignee: A*Ware Technologies, L.C.Inventors: Derric T. Overcash, Richard C. Wallace
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Patent number: 6174567Abstract: An applicator for direct or indirect application of a liquid or pasty coating medium onto a traveling fiber material web, notably of paper or cardboard, includes at least one metering system with a metering slot configured as an open-jet nozzle and formed between an approach-side lip and a departure-side lip. The applicator includes at least one guide surface bordering on the exit of the metering slot and intended for the coating medium issuing as an open jet out of the metering slot. The length of the guide surface is adjustable in at least one direction substantially parallel to the flow direction of the coating medium along the guide surface.Type: GrantFiled: November 19, 1999Date of Patent: January 16, 2001Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Manfred Uebersch{umlaut over (a)}r, J{umlaut over (u)}rgen Mittag
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Patent number: 6171653Abstract: An apparatus applies a liquid or viscid coating medium onto a moving material web, especially one made of paper or cardboard. A coating mechanism first applies the coating medium onto an applicator element or an applicator roll, which subsequently transfers the coating medium at a coating location onto the material web in the form of a coating layer. Furthermore, if so desired, a doctoring device can be positioned at a doctor station, adjacent to the coating location, on the downstream side relative to the movement of the material web for the purpose of smoothing and/or metering the coating. The coating apparatus incorporates an apparatus for the generation and/or supplying of a fluid, preferably steam. This apparatus is positioned adjacent to the coating location or to the doctor station on the downstream side relative to the movement L of the material web.Type: GrantFiled: January 8, 1999Date of Patent: January 9, 2001Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Bernhard Kohl, Martin Kustermann, Oswald Satzger, R{umlaut over (u)}diger Kurtz, Harald Hess, Karl-Heinz Hannen, Hans Peter Hoffmann, Franz Kustos
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Patent number: 6171642Abstract: In a method of direct or indirect application of a liquid or viscous coating medium onto a moving material web, specifically a paper or cardboard web, a layer of the coating medium is applied to the material web by use of an applicator unit. The coating result is then checked for deviations from the desired coating result. In the event that such deviations are detected, and in order to correct them, at least one applicator unit operating parameter is adjusted. The adjustment is made within a short time period, and with the material web running, from an initial operating parameter value that is in effect prior to detection of the deviation. Subsequently, the operating parameter is then reset to at least approximately the initial parameter value, whereby the adjustment and the subsequent resetting may be repeated if necessary.Type: GrantFiled: January 8, 1999Date of Patent: January 9, 2001Assignee: Voith Sulzer Papiertechnik Patent GmbHInventor: Martin Kustermann
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Patent number: 6153265Abstract: Coating equipment 20 with an extrusion type coating head comprising a back edge 6 having a top side which slopes away from a support from the height of the top of a front edge 5, a coating fluid spouting slot 4 defined by both the edges, and guide plates for regulating the width of a coating fluid spouted from the slot tip on both side ends of the slot for applying the coating fluid to the support surface from the slot 4 in a non-pressurized condition. The nearest point to the support surface in the slot corresponding portion of the upper edge of the guide plate 7 is positioned slightly upstream from the center line of the width of the slot along the support running direction and the area given by the product of the distance between the nearest point and the support surface and the width of the slot is made a specific value or less.Type: GrantFiled: October 19, 1994Date of Patent: November 28, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Mikio Tomaru, Norio Shibata, Shinsuke Takahashi, Akihiro Suzuki
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Patent number: 6148641Abstract: An apparatus and method for producing dried, chopped strands from a supply of continuous fiber strands by the direct deposition of wet, chopped strands ejected from a chopping assembly into a drying chamber is disclosed. A transition chute is interposed between the chopping assembly and the drying chamber to guide the chopped strands to pass directly into the drying chamber.Type: GrantFiled: December 18, 1998Date of Patent: November 21, 2000Assignee: PPG Industries Ohio, Inc.Inventors: John R. Blough, Jerry B. Noftsger, Ronald L. Hawkins
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Patent number: 6143580Abstract: Methods of forming mask patterns and methods of forming field emitter tip masks are described. In one embodiment a first surface is provided over which a mask pattern is to be formed. A mixture comprising mask particles is applied to a second surface comprising material joined with the first layer. The mixture, as applied, leaves an undesirable distribution of mask particles over the first surface. After application of the mixture to the second surface, the mask particles are laterally distributed over the first surface, into a desirable distribution by placing a particle-dispersing structure directly into the mixture on the second surface and moving the particle-dispersing structure laterally through the mixture on the second surface. In another embodiment, a mixture is formed on the substrate's second surface and includes a liquid component and a plurality of solid mask-forming components.Type: GrantFiled: February 17, 1999Date of Patent: November 7, 2000Assignee: Micron Technology, Inc.Inventors: David H. Wells, Aaron R. Wilson, John J. Michiels
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Patent number: 6132807Abstract: The invention relates to a method of directly or indirectly applying a liquid or pasty medium to a continuous material web by use of an application unit having at least one applicator, at least one doctor element, and at least one doctor element support at which the doctor element is held and can be pressed at a predetermined pressure against a counter-surface by at least one adjustment movement of the doctor element support. The following steps are usable to set a desired transverse and/or longitudinal profile of the medium to be applied or which has been applied: pressing the doctor element at a predetermined contact pressure against the counter-surface by adjusting the doctor element support into a predetermined adjustment position, and by altering the forces exerted on the doctor element by the medium to be applied or which has been applied, while the adjustment position of the doctor element support is kept constant for a predetermined production range.Type: GrantFiled: August 6, 1998Date of Patent: October 17, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Harald Hess, Hans-Peter Sollinger
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Patent number: 6129952Abstract: A system for removing resin from the stator core of a stator of a motor involves means for removing resin (1) from an inner circumferential surface surrounding the bore of the stator core; (2) from the outer circumferential surface of the stator core; and (3) from between the windings along the end surfaces of the stator core. The circumferential surfaces have resin removed from them by moving the surfaces relative to a series of wipers. The wipers push the resin off the surfaces as they sweep the surfaces. Resin is removed from the end surfaces by blowing the resin radially inward, where it either drips off the core or is deposited on the inner circumferential surface, from which it is removed by wipers.Type: GrantFiled: September 30, 1999Date of Patent: October 10, 2000Assignee: Reliance Electric Technologies, LLCInventor: Hobart DeHart
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Patent number: 6117490Abstract: A coating material application method is for forming a film while guides disposed at both ends of the tip of a nozzle in the direction of application width and protruding to a substrate are contacted with the substrate, and while the gap between at least the outlet-side edge at the tip of the nozzle and the surface of the substrate is maintained constant.Type: GrantFiled: October 1, 1997Date of Patent: September 12, 2000Assignee: Matsushita Electric Industrial Co, Ltd.Inventors: Koji Nishida, Masaru Watanabe, Tsumoru Ohata
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Patent number: 6113986Abstract: A method of applying a coating to a surface of a base product that includes providing a calender stack that includes a rotatable king roll and a feeding roll is provided. The king roll is opposed to the feeding roll to define a nip portion between the rolls. A cleaning blade is provided and placed in contact with the king roll and a calender box is provided and placed adjacent a surface of the king roll. A coating material is applied to the surface of the king roll utilizing the calender box. A base product is passed through the nip portion to apply the coating material to a surface of the base product to form the coating thereon.Type: GrantFiled: January 8, 1998Date of Patent: September 5, 2000Assignee: Fort James CompanyInventors: Kenneth John Shanton, Erland R. Sandstrom, Timothy Paul Hartjes, Dean Patrick Swoboda
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Patent number: 6106900Abstract: A method of applying a multi-layer coating to a surface of an elongated strip article (10) of variable thickness or surface height. The method involves applying at least two layers (12a, 12b,) of different coating materials in the form of solidifiable fluids directly onto the surface (10a, 47, 48) of the elongated metal strip article and reducing the layers to a desired thickness by causing the applied coating materials to encounter at least one coating surface (27) that is movable substantially perpendicularly relative to the strip article and is urged towards the strip article in opposition to hydrodynamic force generated by the coating materials on the at least one coating surface. Differences of thickness or surface height of the strip article are therefore accommodated unduly varying the coating thickness.Type: GrantFiled: January 20, 1999Date of Patent: August 22, 2000Assignee: Alcan International LimitedInventors: Robert Arthur Innes, Neil Louis Brockman, Melville Douglas Ball, Carl Arlen Wollam
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Patent number: 6103314Abstract: A method and apparatus for coating a moving paper or paperboard web (1), in which coating mix is applied to the surface of the web (1) by means of a rotating applicator roll (11). The coating mix applied to the web (1) is levelled with the help of smoothing means (4, 5, 6) acting against a backing roll (8). The web (1) to be coated is presses against the applicator roll (11) with the help of an endless band (2), which is adapted to pass over at least the applicator roll (11), the backing roll (8) and an adjustment roll (10) placed upstream of the applicator roll so that the band (2) with the web (1) backed by the band (2) are together deflected to pass over the applicator roll (11) along their path between the adjustment roll (10) and the backing roll (8).Type: GrantFiled: October 25, 1996Date of Patent: August 15, 2000Assignee: Valmet CorporationInventor: Jorma Kinnunen
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Patent number: 6099656Abstract: An apparatus and process prevents and removes obstructions in the discharge opening of a metering slot of a coating apparatus, or fountain applicator, applying a coating medium onto a moving material web. The process repeatedly removes obstructions from the discharge opening of the metering slot, thereby preventing defects in the applied coating. The apparatus includes a scraper disposed and translatory movable within the discharge opening in a direction transverse to the direction of movement of the material web.Type: GrantFiled: March 31, 1999Date of Patent: August 8, 2000Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Martin Kustermann, Patric Romes
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Patent number: 6099909Abstract: The invention relates to a coating method and device for coating a size-press roll, paper or board or a corresponding moving base. The coating device comprises a revolving coating bar which rests against the moving base and extends across the machine width. The coating bar is supported in a cradle substantially over its entire length and is a large-diameter grooved bar fitted against the moving base. The coating bar spreads and smoothes a coating agent onto the moving base. The coating agent is introduced into the coating device in advance of the coating bar in the running direction of the moving base.Type: GrantFiled: May 20, 1993Date of Patent: August 8, 2000Assignee: Valmet Paper Machinery, Inc.Inventors: Rauno Rantanen, Hannu Korhonen, Markku Lummila, Timo Lintula
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Patent number: 6096370Abstract: The present invention is to produce a ceramic green sheet with an even thickness. By supplying a ceramic slurry to a slurry room comprising a slurry coater, contacting a carrier film to the fringe part of an opening of the slurry room with pressure so as to close the opening, and moving the carrier film along the opening in the state, a ceramic green sheet made from the slurry can be formed on the carrier film. At the time, based on the actual flow rate data on the actual flow rate of the slurry measured by the flow meter and the actual thickness data on the actual thickness of the green sheet measured by the film thickness meter, appropriate flow rate data on the appropriate flow rate of the slurry to be supplied for obtaining a green sheet with a desired thickness are sought in an appropriate flow rate data calculating means so that the flow rate of the slurry is controlled by the flow rate controlling means based thereon.Type: GrantFiled: September 9, 1998Date of Patent: August 1, 2000Assignee: Murata Manufacturing Co., Ltd.Inventors: Haruhiko Mori, Yutaka Iseki, Makota Muranaka
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Patent number: 6071550Abstract: A device for the application of a liquid or viscous medium onto a running opposing surface includes a doctor blade that is mounted on a support beam, whereby the relative positions of the support beam and the opposing surface are adjustable by use of a regulating device. A flexible pressure tubing that is adjustable against the doctor blade is also provided on the support beam. In the process of controlling/regulating the device, the operating condition of the coating applicator is recorded, control values are established on the basis of the recorded results, and the regulating device and/or fluid pressure in the flexible pressure tubing is influenced on the basis of the established control values. Control/adjustments are made in such a manner that the angle of attack between the doctor blade and the opposing surface is maintained at a predetermined value.Type: GrantFiled: July 17, 1998Date of Patent: June 6, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Manfred Ueberschar, Thomas Klein, Franz Fischer
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Patent number: 6063434Abstract: A paste composition for screen printing a cathode ray tube (CRT) shadow mask, the composition including 12-32 wt % of a vehicle, 34-87 wt % of an electron reflecting material, and 0.7-44 wt % of a frit, and a screen printing method using the paste composition. A CRT shadow mask to which the paste composition has been applied, the vehicle driven off, and the frit glassified exhibits decreased doming due to reduced thermal expansion of the shadow mask.Type: GrantFiled: October 2, 1997Date of Patent: May 16, 2000Assignee: SamSung Display Devices Co., Ltd.Inventors: Hwan-chul Rho, Dong-hee Han, Jae-myung Kim
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Patent number: 6060110Abstract: An elongated component part, extending across the width of a moving material web, can be adjusted for the purpose of applying a liquid or viscid medium onto the moving material web. The component part is supported by a supporting beam and is equipped with an adjustment fixture including a plurality of adjustment devices which are arranged along the length of the elongated component part at the support locations. The adjustment devices are separated from each other and adjusted for achieving a forced deformation of the component part in a direction that is perpendicular to their longitudinal axis. The adjustment positions of the respective adjustment devices are recorded. Imaginary connecting lines between the free ends of two respective, neighboring support locations are formed. An angle between two respective, neighboring connecting lines is calculated. The respective, calculated angle is compared with a pre-determined boundary angle.Type: GrantFiled: November 17, 1998Date of Patent: May 9, 2000Assignee: Voith Sulzer Papiertechnik GmbHInventor: Eckard Wozny
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Patent number: 6057000Abstract: A coating process includingproviding a coating composition comprising finely divided photoconductive organic particles dispersed in a solution of a film forming binder, the composition having a predetermined substantially constant liquid yield stress value,flowing the composition along a feed channel,introducing the composition into an elongated manifold cavity comprising a least a first progressively narrowing channel extending away from the feed channel,flowing the coating composition along at least the first progressively narrowing channel,flowing the coating composition out of the manifold cavity into an extrusion passageway extending away from at least the first progressively narrowing channel,shaping the coating composition into a thin ribbon shaped stream in the extrusion passageway,depositing the ribbon shaped stream on a substrate to form a coating, andmaintaining an applied shear stress to the composition that is greater than the yield shear stress value of the coating composition while flowing theType: GrantFiled: October 29, 1998Date of Patent: May 2, 2000Assignee: Xerox CorporationInventor: Jian Cai
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Patent number: 6042895Abstract: A method for imprinting woodprints onto the blade of fan generally includes the steps of 1) molding the plastic blade; 2) coloring the blade with woodprints; and 3) deploying a protective coating thereof. Characterized in that when the plastic blade is molded by injected molding, the surface of the plastic blade is formed with a plurality of recesses that stimulate the annular rings. The plastic material can be dyed with white or other colors that stimulates the wood color. Then the surface of the plastic blade is printed with a first UV coating that is darker than the color of plastic blade. Afterward, the UV coating is then flattened by means of a rubber knife such that the UV coating is left only within the recesses on the surface of the plastic blade. Before the UV coating is cured and dried, a brush can be used to brush the UV coating longitudinally to generate a pattern of fibrils. Then the coating is undergone the UV light to cure and dry the UV coating.Type: GrantFiled: December 2, 1997Date of Patent: March 28, 2000Inventor: Yu-Keng Huang
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Patent number: 6033726Abstract: A process of coating a heat-conductive strip article, e.g. aluminum or aluminum alloy strip used in the automotive industry, with a solid wax-like coating material, preferably a wax-type lubricant. The process involves heating a solid wax-like coating material that melts in a temperature range of about 30 to 100.degree. C. to form a melt having a viscosity in a range of about 50 centipoise or less and flowing the melt onto a moving surface of the strip article through an elongated slot in a movable coating head having an extended surface adjacent to the slot to form a coating layer on the article. The coating head is pushed towards the surface of the strip article as the melt is flowed as a coating onto the surface from the slot to reduce a coating thickness by pressing the extended surface of the coating head onto the coating as the coating is formed.Type: GrantFiled: July 14, 1997Date of Patent: March 7, 2000Assignee: Alcan International LimitedInventor: Robert Arthur Innes
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Patent number: 6033723Abstract: Method and apparatus of coating a plurality of wet layers on an flexible elongated web, which is economical to build and easy to operate at high speeds, and an apparatus which can be used to manufacture multi-layer magnetic recording media of the highest quality. Such apparatus can employ a gravure coater while an extrusion die both smoothes the wet gravure layer to eliminate its pattern and simultaneously extrudes a second dispersion. That smoothing is provided by a face of the upstream lip, which face has a convex shape that allows the wet gravure layer to remain in contact with the upstream lip over a wrap angle .gamma. of at least two degrees, thus ensuring that the tensioned carrier web neither buckles in the cross-web direction nor experiences instabilities such as fluttering. The extruded layer is contacted by a smooth face of the downstream lip, and the coated carrier web exits the smooth face substantially tangentially at a sharp trailing corner.Type: GrantFiled: February 24, 1998Date of Patent: March 7, 2000Assignee: Imation Corp.Inventors: Stephan F. Kistler, Kenneth E. Palmquist, Michelle L. Toy, Wayne P. Ulwelling
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Patent number: 6030658Abstract: In a resin coating applicator, a holder 14 is fixed on a base 15 fitted to a drawing machine, and in the holder 14, hot water can be circulated from an inlet 18. The inner circumferential surface of the holder 14 is formed into a tapered shape so that the outer circumferential surface of a cup-like member 4 of a cartridge type coating sub-assembly 1 is fitted to the holder 14. The respective outer circumferential surfaces of a nipple 2 and a coating die 3 are cylindrical so as to be fitted to the inner circumferential surfaces of an inner cylindrical member 6, and they are positioned by a step portion. Further, they are pressed from the upper and lower sides by the bottom portion of the cup-like member 4 and a lid member 5. The lid member 5 is fastened to the cup-like member 4 integrally by a thread.Type: GrantFiled: February 13, 1998Date of Patent: February 29, 2000Assignee: Sumitomo Electric Industries Ltd.Inventors: Ichiro Tsuchiya, Kaoru Okuno, Hideo Miyaki, Kazumasa Oishi
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Patent number: 6025018Abstract: A flattened tubular knitted wire mesh is passed through a bath of a slurry comprising a vermiculite binder and a high temperature lubricant powder with optional metal fibers suspended in water to form an impregnated moving slurry filled web. The slurry filled web is passed between metering bars to remove excess slurry to reduce the web to the desired thickness and then dried in an oven at a temperature in the range of about 200-400.degree. F. The web is conveyed at about 5 feet/minute and forms a continuous sheet of flexible preform with a dried filler which is wound on a take up roller driven by a motor via a controller which also operates the web drying oven. The preform is then formed into discrete preforms for article manufacture such as seals and the like by conventional die compression.Type: GrantFiled: March 25, 1997Date of Patent: February 15, 2000Assignee: Metex Mfg. CorporationInventors: Dov Goldman, Kurry Brian Emmons, Peter P. Usher
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Patent number: 6022591Abstract: An applicator implement applies liquid or pasty coating medium directly onto a moving layer of material, in particular paper or cardboard. The applicator implement includes a pre-metering device which extends along the width of the moving material layer. The pre-metering device is divided into a number of segments, each of which are in turn associated with at least one actuator that enables the segments to move with respect to the thickness of the material layer in order to shape a desired profile of the pre-metering device. The applicator implement further includes, following along the path of movement of the material layer, a finishing metering device which also extends along the width of the moving material layer, and which is divided into a number of segments, each of which are in turn associated with at least one actuator that enables the segments to move with respect to the thickness of the material layer in order to shape a desired profile of the finishing metering device.Type: GrantFiled: July 8, 1997Date of Patent: February 8, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Manfred Ueberschar
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Patent number: 6020031Abstract: A method of substantially eliminating shading in a carpet by steaming the pile tufts and positively orientating the pile tufts in a predetermined direction. The positive orientation of the tufts is achieved by engagement with a scroll roll, which is preferably a smooth roller having axially or helically extending ribs or grooves.Type: GrantFiled: December 17, 1997Date of Patent: February 1, 2000Assignee: Brintons LimitedInventors: John Reginald Pilling, Timothy Robert Sobey, Christopher John Page
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Patent number: 6015587Abstract: A process for manufacturing a phosphorescent screen for use in a cathode ray or field emission display, is described. The phosphor layer is applied in the form of a slurry consisting of a powdered phosphor, an ethylene glycol monobutyl ether acetate solvent, and a cellulose acetate butyrate binder. The phosphor concentration is between 30 and 60% by weight, the solvent between 5 and 52.5% and the binder between 17.5 and 35%. If the slurry composition falls within these ranges, then, once the aluminum anode layer is in place, all organic material can be removed by firing at a temperature that is less than 500.degree. C. By keeping the firing temperature below 500.degree. C., roughening of the undersurface of the aluminum is avoided and a more efficient screen is obtained. Data to illustrate this is also provided.Type: GrantFiled: March 16, 1998Date of Patent: January 18, 2000Assignee: Industrial Technology Research InstituteInventors: Yui-Shin Fran, De-An Chang, Chih-Hao Tien
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Patent number: 6010739Abstract: In a method for direct or indirect application of a liquid or pasty medium onto a traveling material web, notably of paper or cardboard, where during the application the cross profile (length profile) of the medium is modified under control and thereafter, in the direction of travel, the length profile (cross profile) of the previously applied medium is modified under control. Control of the cross profile and control of the length profile of the applied medium occur separately from one another in automatic control loops based on measurements of the applied profile. In addition is a pertaining apparatus with an applicator, an equalizer, a pertaining cross profile control loop, and a pertaining length profile control loop.Type: GrantFiled: September 10, 1997Date of Patent: January 4, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Manfred Ueberschar, Anton Plomer, Hans-Peter Sollinger, Bernhard Kohl
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Patent number: RE37436Abstract: A method of manufacturing an elongated decorative molding having a decorative surface and a desired cross-sectional profile is provided. A first coating material is applied to a molded core and then the molded core is passed through the opening of a first die. Once hardened, the coated profile is again coated with a second coating material and then passed through a second die.Type: GrantFiled: September 27, 1999Date of Patent: November 6, 2001Assignee: 888804 Ontario LimitedInventor: Ned Santarossa