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| Number | Title | Issue Date |
| 7993492 | Fiber mat forming apparatus and method of preserving the hydrodynamic processes needed to form a paper sheet The invention relates to an apparatus used in the formation of paper. More specifically the present invention is directed to an apparatus for maintaining the hydrodynamic processes involved in the formation of a fiber mat or paper sheet. The performance of this appa... | 08/09/2011 |
| 7387704 | Non-woven inorganic fiber mat A non-woven mat of inorganic fiber is disclosed having a substance which is lower at the edges of the mat than in the remainder of the mat. Apparatus for making such a mat includes: a source of a slurry of inorganic fiber in a liquid; a forming wire disposed to move... | 06/17/2008 |
| 7384514 | Non-woven inorganic fiber mat A non-woven mat of inorganic fiber is disclosed having a substance which is lower at the edges of the mat than in the remainder of the mat. Apparatus for making such a mat includes: a source of a slurry of inorganic fiber in a liquid; a forming wire disposed to move... | 06/10/2008 |
| 7364643 | Forming of a paper or board web in a twin-wire former or in a twin-wire section of a former Fibrous stock is supplied by a paper or board machine headbox (1) between looped forming wires (11, 12). Water is removed in a first dewatering zone (Z1) formed with a fixed forming shoe (3) having a curved surface against which a wire ( | 04/29/2008 |
| 7354502 | Method for making a fibrous structure comprising cellulosic and synthetic fibers A method for making a fibrous structure, the method comprising the steps of: providing a mixture of synthetic fibers and short cellulosic fibers onto a forming member so as to form one or more layers including the mixture of synthetic fibers and short cellulosic fib... | 04/08/2008 |
| 7175744 | Apparatus for treating a wire or a felt band in a papermaking installation An apparatus for the treatment of, in particular for vacuum action upon, the at least one wire or at least one felt band in a papermaking plant. The wire or felt band is moved in circulation by the apparatus, which, if appropriate, is connected to a vacuum source. T... | 02/13/2007 |
| 7169262 | Method and apparatus for forming a paper or tissue web A method and apparatus for transferring vibrational forces to a wire of a papermaking machine for forming a web on the wire and for dampening vibrations imparted to the papermaking machine. In some embodiments, the apparatus is a vibrational device including a vibra... | 01/30/2007 |
| 7141143 | Method and apparatus for draining fibre pulp suspension The invention relates to a method of draining a fiber pulp suspension, where the fiber pulp suspension is applied to a convergent dewatering space arranged between two wires travelling in the same direction. In the dewatering space, water and powdery substance are r... | 11/28/2006 |
| 7005039 | Device for adjusting the position of a wiper strip with respect to the screen in a papermaking plant A device for adjusting the position of the wiper strip on the screen in a papermaking plant regulates the contact pressure with which the wiper strip bears on the screen. The wiper strip is fixed to a supporting bar and the supporting bar is configured such that it ... | 02/28/2006 |
| 6998020 | Screen and process for paper patterning A screen (i) for use in forming a patterned paper by a wet-laying technique. The screen is of a mesh material (2) that is pervious to water and has formed therein repeats of pattern forming elements 3a–c, 4a–d and 5 whic... | 02/14/2006 |
| 6869507 | Variable frequency dewatering assembly A variable frequency foil (VFF) box assembly and mechanisms for moving individual foils/foil beams and individual foil beam sets relative to each other to adjust the frequency of a paper making machine, and method of use are provided. The VFF box assembly allows for... | 03/22/2005 |
| 6802940 | Variable frequency dewatering assembly A variable frequency foil (VFF) box assembly and mechanisms for moving individual foils/foil beams and individual foil beam sets relative to each other to adjust the frequency of a paper making machine, and method of use are provided. The VFF box assembly allows for... | 10/12/2004 |
| 6712941 | Forming board for papermaking machine with adjustable blades A forming board for a papermaking machine includes: a support; a transversely-extending lead blade attached to the support, the lead blade; a plurality of transversely-extending trailing blades; a mounting unit for each of the plurality of trailing blades, the mount... | 03/30/2004 |
| 6554959 | Tissue paper making machine A tissue paper making machine, a tissue paper product, and a method for producing such a tissue paper product. According to the invention, a dewatering and sheet-forming wire (13;14) is deposited in the pulp flow area by a texturing wire (16;17) that is p... | 04/29/2003 |
| 6503370 | Method of producing a paper having a three-dimensional pattern Method of producing paper having a three-dimensional pattern of alternating raised and recessed portions which is given the paper in connection with impulse drying, at which the wet paper web is passed through at least one press nip (12) comprising a rota... | 01/07/2003 |
| 6471829 | Variable frequency fourdrinier gravity foil box A variable frequency foil (VFF) box assembly and mechanisms for moving individual foils/foil beams and individual foil beam sets relative to each other to adjust the frequency of a paper making machine, and method of use are provided. The VFF box assembly... | 10/29/2002 |
| 6458246 | Papermaking machine for forming tissue employing an air press A web of tissue is formed in a crescent former, followed by an air press for water removal in the pressing section, passing onto a Yankee dryer. A headbox injects stock between upper and lower dryer fabrics brought together on a breast roll. The fabrics m... | 10/01/2002 |
| 6451167 | Wetlay process for manufacture of highly-oriented fibrous mats 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 wet... | 09/17/2002 |
| 6126786 | Apparatus and method of generating stock turbulence in a fourdrinier forming section A method and apparatus for generating turbulence in stock to deflocculate the stock in an open surface forming section of a paper making machine comprises a dewatering box providing vacuum assisted drainage and which has a set of dewatering elements that ... | 10/03/2000 |
| 6090243 | Process for preparing a web of paper fibers Improved method of removing water from a wet web of paper includes the steps of (a) passing the web and its supporting fabric above and in sliding contact with a surface of a meniscus separator unit having a plurality of spaced cells in contact with the i... | 07/18/2000 |
| 6066235 | Wetlay process for manufacture of highly-oriented fibrous mats 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 wet... | 05/23/2000 |
| 5830322 | Velocity induced drainage method and unit A drainage device and method which provides for drainage from paper or pulp stock on a fabric in a sheet or mat making machine which includes a primary blade and trail blade with a gap therebetween for drainage wherein the size of the gap controls drainag... | 11/03/1998 |
| 5462642 | Method of forming a fibrous mat A method of producing a nonwoven fiber glass mat that contains discrete areas which are of different construction than the remainder of the mat. The permeable forming screen onto which a fibrous aqueous slurry is deposited is of a different structure in a... | 10/31/1995 |
| 5080760 | Pressurized forming board A paper making machine forming board is described wherein the rate of drainage of the stock through the forming fabric is curtailed and controlled by applying a low positive air pressure (above ambient atmospheric) to the machine side of the forming fabri... | 01/14/1992 |
| 5011577 | Pressure control forming section 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 ... | 04/30/1991 |
| 4999086 | Dispersion roll in a fourdrinier machine In a Fourdrinier paper making machine a dispersion roll mounted between the headbox and the suction and dewatering means, underneath in contact with the Fourdrinier travelling fabric and extending laterally across the width of the fabric, and adapted to r... | 03/12/1991 |
| 4888095 | Method for extracting water from a paper web in a papermaking machine using a ceramic foam member The invention is directed to a method for extracting water from a paper web in a paper making machine using a ceramic foam component. The component includes a supporting structure and a water permeable member is mounted on the supporting structure and is ... | 12/19/1989 |
| 4780184 | Method for the adjustment of the dewatering in the wire section of a paper machine A method and apparatus are provided for the adjustment of the dewatering in the wire section of a paper machine. A fiber web is fed on to a forming wire, and the forming wire is passed over the surface of at least one dewatering means and a partial vacuum... | 10/25/1988 |
| 4735686 | Twin-wire former and method for forming a paper web with steam implosion A method for forming a paper web by which web formation is improved and flocculation in the web is reduced includes the steps of feeding steam under pressure into the fiber suspension when the suspension enters into the gap of the former and as web format... | 04/05/1988 |
| 4684441 | Method for operably adjusting a leading, forming board strip A method for operably adjusting a leading strip of a forming board of papermaking wire wherein the position and length of an impinging papermaking slurry is detected and the length of the leading strip adjusted.... | 08/04/1987 |
| 4657635 | Method and apparatus for the deflocculation of stock A papermaking machine including a non-dewatering forming board comprising a plurality of contiguous blades and a plurality of shower nozzles for showering stock carried by a forming medium over the forming board with a plurality of needle jets of water, e... | 04/14/1987 |
| 4609435 | Process and equipment in the forming of paper web A process in the forming of a paper web, the dewatering of the pulp web, and of the paper web being formed comprises feeding the pulp suspension jet from the slice of the headbox into a gap formed by two wires, the gap becoming narrower in the feeding dir... | 09/02/1986 |
| 4543159 | Reinforced cement sheet product containing no asbestos for fabricating on Hatschek machine A process for making a cement and non-asbestos fiber mat on a Hatschek machine having a cylinder vat, a cylinder in the cylinder vat, and a porous surface on the cylinder on which the mat is formed and through which drainage water passes including the ste... | 09/24/1985 |
| 4532008 | Horizontal twin wire machine In a horizontal twin-wire paper machine, the paper sheet is initially formed in a wedge-shaped zone defined by generally horizontal runs of the primary wire and top wire which are brought into converging relation by cooperating sets of deflectors which su... | 07/30/1985 |
| 4370200 | Method of influencing a pre-drained fibrous web on a screen A method and apparatus are disclosed for influencing the fibers in the uppermost layer of a fibrous web lying on a screen, for example, in applying a watermark or evening the surface of the web, wherein a surface compression is exerted on the web by a scr... | 01/25/1983 |
| 4306934 | Method and apparatus for forming paper The wet end of a fourdrinier paper machine includes a transversely disposed roll beneath the wire. The roll is shaped and mounted for rotation at a speed which is different from the speed of the wire to create pulses of negative pressure beneath the wire ... | 12/22/1981 |
| 4235667 | Method of and means for attaining uniformity in paper webs produced on a roll former By imposing pressure pulses on mobile fibers in suspension in paper making stock slurry in the primary drainage area of the forming zone of a roll former substantially uniform distribution of the fibers is effected in forming of the paper web. A device fo... | 11/25/1980 |
| 4070235 | Method of making biaxially oriented nonwoven fabrics A nonwoven fabric having alternating stripes of high fiber density and low fiber density has fibers of at least 1/2 inch in length and fibers of less than 1/2 inch in length, preferably under 1/4 inch in length. The fabric is made in such a manner as to p... | 01/24/1978 |
| 4024015 | Web-forming method and apparatus A web-forming method and apparatus particularly suited for cellulose pulp. The web is initially formed on a rotary wire cylinder which has a horizontal axis and a crest situated at the highest part of the cylinder over the horizontal axis, the cylinder du... | 05/17/1977 |
