| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 261 | Highly-oriented fibrous mats | US09558393 | 2000-04-25 | US06746571B1 | 2004-06-08 | Stephen P. Scheinberg |
| A mat containing highly machine direction oriented (90% or greater), discontinuous reinforcement fibers, is produced on inclined wire or rotary paper making machinery. Fibers are first uniformly dispersed in an aqueous medium containing thickeners and wetting agents. In one embodiment, antifoaming agents are also added to prevent floating fibers which entangle and reduce orientation. Thermoplastic fibers or particles may also be included. Stock is brought into an open headbox in a flow pattern which allows the fibers to decelerate before approaching the porous suction belt (wire). As the fibers approach the suction belt, the fibers begin to turn and align in the streamline so as to present one end toward the suction wire. The leading ends of the fibers are gripped by the moving belt which drags the fibers out of the dispersion stock in a straight line. The porous mat produced may be dried and bonded through hot air, heat and/or pressure, or chemical binders. Stacks of such mats may be compressed partially to produce porous structures, or fully to produce impervious, rigid structural panels or shapes. | ||||||
| 262 | Method for the manufacture of paper, and paper machine line | US10019865 | 2002-04-15 | US06699362B1 | 2004-03-02 | Pentti Rautiainen |
| Fine paper is manufactured in a paper machine by feeding stock into a headbox (100) from a short circulation the stock volume of which has been minimized, water is removed from the paper web (W) most advantageously in a gap former (250), in the press section (300) water is pressed out of the paper web (W) in an extended nip press (360), in the dryer section (400) impingement drying (450) is employed for the drying of the paper web (W), the paper web (W) is pre-calendered in a calender (900) employing low nip loads, both surfaces of the paper web (W) are precoated at the same time, after precoating (500) the paper web (W) is dried by means of contact-free drying (660), the paper web (W) is coated in an on-line coating station/stations (700, 800), after which the paper web (W) is at least partly dried in a drying section/sections (750, 850) by means of contact-free drying of the paper web (W), and the paper web (W) is calendered in an on-line calender (900) while the linear load in each nip is regulated separately. | ||||||
| 263 | MULTI-PLY PAPERBOARD PREPARED FROM RECYCLED MATERIALS AND METHODS OF MANUFACTURING SAME | US10107897 | 2002-03-26 | US20030168191A1 | 2003-09-11 | James K. Hansen; Richard L. Munson JR.; Roberto Balaguer JR.; Jeffrey M. Leitinger; Thomas F. Barton |
| This invention, in one aspect, relates to a multi-ply paperboard having at least three inner plies and, in some aspects, a top liner and a back liner, wherein the multi-ply paperboard is derived from fiber sources comprising at least about 80% by weight recycled fiber. The multi-ply paperboard of the present invention exhibits strength characteristics comparable those of paperboard prepared from virgin board. In further aspects, the invention relates to methods of making the multi-ply paperboard of the present invention. | ||||||
| 264 | Wetlay process for manufacture of highly-oriented fibrous mats | US09558623 | 2000-04-26 | US06451167B1 | 2002-09-17 | Stephen P. Scheinberg |
| A mat containing highly machine direction oriented (90% or greater), discontinuous reinforcement fibers, is produced on inclined wire or rotary paper making machinery. Fibers are first uniformly dispersed in an aqueous medium containing thickeners and wetting agents. In one embodiment, antifoaming agents are also added to prevent floating fibers which entangle and reduce orientation. Thermoplastic fibers or particles may also be included. Stock is brought into an open headbox in a flow pattern which allows the fibers to decelerate before approaching the porous suction belt (wire). As the fibers approach the suction belt, the fibers begin to turn and align in the streamline so as to present one end toward the suction wire. The leading ends of the fibers are gripped by the moving belt which drags the fibers out of the dispersion stock in a straight line. The porous mat produced may be dried and bonded through hot air, heat and/or pressure, or chemical binders. Stacks of such mats may be compressed partially to produce porous structures, or fully to produce impervious, rigid structural panels or shapes. | ||||||
| 265 | Wetlay process for manufacture of highly-oriented fibrous mats | US54771 | 1998-04-03 | US6066235A | 2000-05-23 | Stephen P. Scheinberg |
| A mat containing highly machine direction oriented (90% or greater), discontinuous reinforcement fibers, is produced on inclined wire or rotary paper making machinery. Fibers are first uniformly dispersed in an aqueous medium containing thickeners and wetting agents. In one embodiment, antifoaming agents are also added to prevent floating fibers which entangle and reduce orientation. Thermoplastic fibers or particles may also be included. Stock is brought into an open headbox in a flow pattern which allows the fibers to decelerate before approaching the porous suction belt (wire). As the fibers approach the suction belt, the fibers begin to turn and align in the streamline so as to present one end toward the suction wire. The leading ends of the fibers are gripped by the moving belt which drags the fibers out of the dispersion stock in a straight line. The porous mat produced may be dried and bonded through hot air, heat and/or pressure, or chemical binders. Stacks of such mats may be compressed partially to produce porous structures, or fully to produce | ||||||
| 266 | Method and device for enhancing the run of a paper web in a paper machine | US726195 | 1996-10-04 | US5865955A | 1999-02-02 | Heikki Ilvespaa; Juha Kaihovirta; Antti Kuhasalo; Jorma Laapotti |
| A method and device for enhancing the run of a web in a paper machine in which water is removed from the web by pressing the web in at least one press nip and after pressing, the web is dried in at least one dryer group applying impingement drying. The web is guided along a substantially linear path or by using a large curve radius in the dryer group applying impingement drying. In the drying stage, after the impingement drying, the web is dried in at least one dryer group having normal single-wire draw. The web is passed from the pressing stage to the drying stage as a closed draw and more particularly, from the pressing stage to the area with single-wire draw in the drying stage so that the web is constantly supported against at least one support face. | ||||||
| 267 | Pressure control forming section | US362938 | 1989-06-08 | US5011577A | 1991-04-30 | Victor E. Hansen; David T. Smith; Douglas R. McPherson; Richard E. Pitt |
| A method and apparatus are disclosed whereby the rate of drainage of the stock on a Fourdrinier paper making machine can be controlled for the full length of an open surface forming section. A continuous sealed drainage box is used from adjacent the head box slice to the end of the forming section, within which the air pressure can be controlled. In the area adjacent the head box slice drainage is hindered by the use of a positive (above ambient atmospheric) pressure, while further along the forming section the pressure is decreased to a negative value (below ambient atmospheric). Improved paper formation and first pass retention are obtained. | ||||||
| 268 | Method for resisting formation of undulations in a fiber/water mixture during forming of a paper web in a paper-making machine | US87400 | 1987-08-20 | US4892622A | 1990-01-09 | Raimo Malkki; Paavo Jaatinen; Timo Haverinen; Pekka Eskelinen; Juhani Jokinen; Vesa Vuorinen; Raimo Virta; Martti Salmivaara |
| A method of and arrangement for resisting formation of undulations in a fiber/water mixture supplied onto a forming wire at an open planar wire section of a paper-making machine include establishing over the wire an air curtain extending over the full breadth thereof, in the region of which the air mass upon the wire is set in motion. The direction of movement of the air mass is the same as the traveling direction of the wire, and the velocity of the air substantially equals the speed of the wire. The air curtain commences on the planar wire section, in the machine direction, only at a given distance from a lip slice of a headbox of the machine, and the air curtain extends along the traveling direction of the web over the planar wire section over a given distance. | ||||||
| 269 | Horizontal web-forming apparatus with curved nose forming board | US881999 | 1986-07-03 | US4734164A | 1988-03-29 | Jeffery C. Irwin; John H. Schamell; Jay A. Shands |
| A system for forming a web from a dilute, aqueous slurry of fibers wherein a thin, horizontally-extending aqueous stream of fibers is projected onto a travelling foraminous forming wire. The forming wire is disposed to travel over a forming board which has a leading lip which is deflected downwardly with respect to the oncoming jet stream. The lower surface of the jet stream is disposed substantially parallel with the surface of the travelling foraminous wire wire at the point where the stream contacts the wire to minimize turbulence at the point of initial contact of the jet stream on the wire and subsequent spouting of the fibrous stock downstream in the forming zone. | ||||||
| 270 | Wire section in a paper machine | US345480 | 1982-02-03 | US4472244A | 1984-09-18 | Eino Haltsonen |
| A wire section in a paper machine includes an upper wire unit which is compact and easily exchangeable, if required, the construction of the wire section being such that old, single-wire planar wire machines can be converted to twin-wire machines. The paper machine wire section includes a lower wire having an initial single-wire run in which dewatering of a web takes place, and at least one upper wire unit following the initial single-wire run which defines a twin-wire dewatering zone with an adjacent run of the lower wire and in which dewatering of the web takes place through both the lower and upper wires. The twin wire dewatering zone is further defined by a curved, solid-cover forming shoe situated within the upper wire loop and wherein the forming shoe is preceded by a curved dewatering zone where dewatering is mainly through the upper wire. The upper wire unit further comprises apparatus situated mainly above the forming shoe for conducting water dewatered from the web through the upper wire to at least one side of the paper machine substantially without the use of suction. | ||||||
| 271 | Apparatus for making fiberboard | US175826 | 1980-08-05 | US4294657A | 1981-10-13 | Tsutomu Saito; Masaaki Shida |
| The apparatus for manufacturing the fiberboard is in the form of two vertically opposed endless conveyors upon each of which a fiber layer is formed. Each conveyor has a slanted running portion as a part thereof. A suction box is disposed along the inner surface of each of the slanted running portions so that a fiber layer producing section is formed in each slanted portion. A passage is formed between the conveyors to direct a slurry flow of fibers along each conveyor. The relative speeds of the slurry flow through the passage along the surface of the conveyors is adjusted to be different than the running speed of the conveyors; a supply duct for the slurry flow is disposed in the center of said passage and has an outlet near the upper ends of the fiber layer forming sections. The two layers simultaneously formed can be placed upon each other to form a single layer of fiberboard. | ||||||
| 272 | Papermaking machines | US2319 | 1979-01-10 | US4207144A | 1980-06-10 | Albrecht Meinecke; Heinrich Zag |
| A papermaking machine is shown with an inner traveling screen and an outer traveling screen which are led towards each other to form a generally layered arrangement therebetween during a region of their joint travel and, in such region, the inner and outer screens are caused to pass over a portion of a water extracting or dewatering roller; a water collection apparatus situated outside of the roller serves to collect water centrifuged from the screens passing over the roller; and a preliminary water extraction zone preceeds the roller and such zone extends over a portion of, for example, a generally horizontal section of the inner screen. | ||||||
| 273 | Double filter papermaking machine | US973071 | 1978-12-26 | US4176005A | 1979-11-27 | Alfred Bubik; Siegfried Reutter |
| A double filter papermaking machine comprising two filters guided over a dewatering cylinder. A first one of the filters contains a linear section or path located in front of the cylinder. A domed dewatering or slide shoe, shorter than such linear section, is arranged ahead of the cylinder. The second filter is equipped with an adjustable guide roll, by means of which it is possible to regulate the contact location of the second filter at the first filter, and specifically, between a location disposed at the starting region of the shoe and a location arranged after the shoe at the dewatering cylinder. A regulation device or regulator can be provided which contains a feeler for sensing the position of the water line at the dewatering cylinder. As a function of signals transmitted by the feeler the regulator adjusts the guide roll in a manner such that with a displacement of the water line from a reference position opposite the direction of movement of the filters the contact location is adjusted in the direction of movement of the filters and vice versa. | ||||||
| 274 | Movable deckle within headbox outlet | US735081 | 1976-10-22 | US4081321A | 1978-03-28 | Jakob Wolf; Iwan Lasschuit |
| Apparatus for forming one or more sheets from a dilute suspension of fibers in a liquid has a Fourdrinier wire the upper reach of which travels above a foraminous support, and a head box which has an outlet discharging the suspension onto the upstream portion of the upper reach. The liquid passes through the wire and support, and the fibers form a mat which is carried and advanced by the upper reach of the wire. The apparatus has several deckles which are impervious to liquid and are mounted in or on the support or at a level immediately above the upper reach of the wire. Each deckle extends lengthwise of the entire outlet of the head box and its width is only a small fraction of the width of the outlet. Feed screws or the like are used for moving the deckles sideways so that they overlie selected elongated zones of the upstream portion of the upper reach of the wire, and each deckle can be releasably fixed in the selected position. The deckles can cause the fibers to form a single mat or several parallel mats, depending on the number of deckles and on their positions with respect to the side walls of the head box. | ||||||
| 275 | Production of high strength packaging papers from straw | US528584 | 1974-11-29 | US4040899A | 1977-08-09 | James Wade Emerson |
| Modified paper which exhibits high tear resistance and toughness and which contains a high percentage of straw fibers and which has fibers consolidated in a three step process including drawing water off by vacuum, press drying and fiber upsetting. | ||||||
| 276 | Closed draw transfer system with gaseous pressure direction of web | US465895 | 1974-05-01 | US3981084A | 1976-09-21 | John T. Sobota |
| A paper making apparatus and process of the type wherein the paper is processed from a starting condition of a slurry of pulp fiber to a later condition of a continuous self-sustaining paper sheet. The paper is carried continuously along a preselected path of travel extending from the starting condition to the later condition and for processing the paper as it is being carried. The path of travel normally includes a plurality of pairs of contacting members, including a forming wire and a pick-up felt, a pick-up felt and a bottom felt, and a pick-up felt and Yankee dryer, such contacting members processing the paper. The paper is passed through each nip defined by each of the contacting members and continues along its desired path of travel. Air pressure is applied on the discharge side or outgoing side of one or more of the nips defined between the sets of contacting members. The air pressure is applied in a direction which causes the paper to remain in the desired path of travel and to avoid deviation thereof from the desired path of travel. | ||||||
| 277 | Speed optimization control for fibrous sheet making machines such as paper making machines with dryer limited conditions | US476464 | 1974-06-05 | US3930934A | 1976-01-06 | David Allan Spitz |
| Specifically disclosed is the combination of a paper making machine and a control system including an automatic arrangement which, on demand of the machine operator, performs a coordinated machine speed increase, maintaining the paper sheet characteristics substantially constant until the dryer steam pressure or the steam valve opening reaches a limit. During the speed increase, a number of other machine variables are compared with set limit values and the speed increase is discontinued when a limit is exceeded for a predetermined time period. When the steam pressure has been at a limit, or the steam valve has been wide open, for a predetermined time period the control system, upon sensing the limit being reached, switches to a dryer limited mode of operation wherein the steam pressure is maintained at the limit or the steam valve is locked open. The sheet moisture content is then controlled by a combination of automatic stock valve and machine speed adjustments, while basis weight is controlled by coordinated machine speed adjustments. The control system is adapted for universal use with many machine arrangements which may have separated and/or split dryer sections for rewet or coating operations and the like and/or curl control. To this end, the controller includes a system of logic which determines the optimum control procedure in each case. | ||||||
| 278 | Forming tissue paper by pressing the web while on an uprunning forming wire and transferring the web directly to a yankee dryer | US30602072 | 1972-11-13 | US3846228A | 1974-11-05 | ELY D; MCKIE T |
| 1. IN A MACHINE FOR MAKING FIBROUS WEBS SUCH AS TISSUE AND THE LIKE, AN ENDLESS TRAVELING PLASTIC FORMING WIRE HAVING AN UPRUNNING FORMING RUN HAVING AN INCOMING END AND A LONGITUDINALLY SPACED OUTGOING END, A YANKEE DRYER INCLUDING A HEATED DRUM AT THE OUTERGOING END OF TETHE FORMING RUN OF THE WIRE AND HAVING A POLISHED PERIPHERAL SURFACE, A STOCK INLET ADJACENT THE INCOMING END OF THE FORMING RUN OF THE WIRE LAYING STOCK IN THE FORM OF TANGLED FIBERS IN AQUEOUS SUSPENSION ON THE TOP SURFACE OF THE FORMING RUN OF THE WIRE AT SUBSTANTIALLY THE SPEED OF TRAVEL OF THE FORMING RUN, MEANS DOWNSTREAM OF SAID STOCK INLET REMOVING WATER FROM THE WEB AND A SAVE-ALL FOR CATCHING THE WATER PRESSURED FROM THE WEB AND FALLING THROUGH THE WIRE SAID WATER REMOVING MEANS INCLUDING GROOVED PRESS ROLLS ON OPPOSING SIDES OF THE WIRE FOR PRESSING WATER FROM THE WEB ON THE WIRE, A SUCTION COUCH ROLL DEFINING THE OUTGOING END OF THE FORMING RUN OF THE WIRE, AND REMOVING SUFFICIENT MOISTURE FROM THE WIRE TO PASTE THE WEB TO SAID HEATED DRUM, A CONTACT ROLL TRAINING THE WIRE FROM SAID COUCH ROLL TANGENTIALLY OF SAID HEATED DRUM AND COOPERATING WITH SAID COUCH ROLL TO LAY THE NEWLY FORMED WEB ON THE HEATED DRUM, A DOCTOR SPACED ABOUT SAID JEATED DRUM AT LEAST 270* FROM THE POINT OF TANGENCY OF THE WIRE TO SAID HEATED DRUM AND TRANSFERRING THE FORMED WEB FOR COILING.
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| 279 | Soft,absorbent,fibrous,sheet material formed by avoiding mechanical compression of the fiber furnish until the sheet is at least 80% dry | US29834772 | 1972-10-17 | US3821068A | 1974-06-28 | SHAW D |
| A soft, absorbent, creped paper web formed by deposition from an aqueous slurry of principally lignocellulosic fibers and dried to at least 80 percent fiber consistency or dryness without being subjected to mechanical compression of the web to substantially reduce formation of papermaking bonds which would form upon compression of the web while wet. The resultant uniform density web is adhered to a dryer through the use of a creping adhesive (which does not add significant strength to the web) and is creped therefrom. The fibers in the web are bonded together almost exclusively by conventional papermaking bonds formed upon drying of the web. The uniform density web product has a dry basis weight of from about 10 to 30 lbs/ 2,880 feet2, a TEA-tostiffness ratio greater than 0.5 X 10 4, and an average calculated density throughout it thickness under no load of less than 0.3 grams per cubic centimeter.
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| 280 | Damp pulp molding | US3775525D | 1972-07-19 | US3775525A | 1973-11-27 | CUMPSTON E |
| Damp, fibrous pulp such as cellulose fiber pulp of 20 % to 40 %
solid material is molded by being worked repeatedly with a tool that moves fibers relative to each other for straightening out the fibers and removing air from the pulp to form a damp, felted pump which is then dried. Preferably the tool is a rotor having skid comb teeth that run repeatedly through the pulp in sled runner fashion and work the pulp into a former that is moved progressively away from the rotor to form a length of damp, felted pulp. |
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