Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
  • D21F11/006—Making patterned paper

Definitions

• a paper structure 20 according to the present invention can be made with the papermaking apparatus shown in Figures 4.
• the method of making the paper structure 20 of the present invention is initiated by providing a plurality of fibers suspended in a liquid carrier, such as an aqueous dispersion of papermaking fibers in the form of a slurry, and depositing the slurry of papermaking fibers from a headbox 1500 onto a fiber retentive forming element 1600.
• the forming element 1600 is in the form of a continuous belt in Figure 4.
• the slurry of papermaking fibers is deposited on the forming element 1600, and water is drained from the slurry through the forming element 1600 to form an embryonic web of papermaking fibers 543 supported by the forming element 1600.
• the liquid carrier e.g. water
• the liquid carrier e.g. water
• the liquid carrier e.g. water
• the relatively shorter fibers tend to accumulate in the first zone.
• At least some of the relatively longer fibers can bridge the width of the flow restriction members.
• the average fiber length of the papermaking fibers in the relatively low basis weight regions of the decorative indicia is greater than the average fiber length of the papermaking fibers in surrounding portions of the web.
• the first web contacting surface is a first felt surface 2230 of the felt layer 2220.
• the first felt surface 2230 disposed at a first elevation 2231.
• the first felt surface 2230 is a web contacting felt surface.
• the felt layer 2220 also has oppositely facing second felt surface 2232.
• a nozzle 890 applies an adhesive to the surface 875.
• the treated furnish streams are mixed in the headbox and deposited onto a forming element 1600 of the type shown in Figure 6 to form a homogenous web.
• the forming element 1600 comprises a Fourdrinier forming wire having flow restriction members 1650 formed by a photopolymer layer cured on the forming wire. Dewatering occurs through the forming wire and is assisted by a deflector and vacuum boxes.
• the forming wire manufactured by Appleton Wire of Appleton, Wisconsin, is a triple-layer square weave configuration having 90 machine- direction and 72 cross-machine-direction monofilaments per inch, respectively. The monofilament diameter ranges from about 0.15 mm to about 0.20 mm.
• the forming wire air permeability is about 1050 scfrn.
• the forming element includes a forming wire. Dewatering occurs through the forming wire and is assisted by a deflector and vacuum boxes.
• the forming wire manufactured by Appleton Wire of Appleton, Wisconsin, is a triple-layer square weave configuration having 90 machine-direction and 72 cross-machine-direction monofilaments per inch, respectively. The monofilament diameter ranges from about 0.15 mm to about 0.20 mm.
• the forming wire air permeability is about 1050 scfm.
• photopolymer flow restriction members 1650 having a flower-like shape, as shown in Figure 6.
• the flow restriction members 1650 combined, have a projected area equal to about 10 percent of the projected area of the forming element 1600.
• the difference in elevation D ( Figure 7) is about 0.003 inch (0.076 millimeter).
• the embryonic wet web is transferred from the forming element 1600, at a fiber consistency of about 10% at the point of transfer, to a web support apparatus 2200 of the type shown in Figures 14-15 made in accordance with U.S. Patent No. 4,528,239, Trokhan, issued on 9 July 1985, which patent is incorporated herein by reference.
• the difference in elevation between the elevations 2261 and 1231 ( Figure 15) is about 0.015 inch (0.38 millimeter).
• Further de-watering is accomplished by vacuum assisted drainage until the web has a fiber consistency of about 28%.
• the patterned web is pre-dried by air blow-through to a fiber consistency of about 65% by weight.
• the web is then adhered to the surface of a Yankee dryer with a sprayed creping adhesive comprising 0.25% aqueous solution of Polyvinyl Alcohol (PVA).
• PVA Polyvinyl Alcohol
• the fiber consistency is increased to at least about 90% before dry creping the web with a doctor blade.
• the doctor blade has a bevel angle of about 25 degrees and is positioned with respect to the Yankee dryer to provide an impact angle of about 81 degrees; the Yankee dryer is operated at about 800 fpm (feet per minute) (about 244 meters per minute).
• the dry web is formed into roll at a speed of 650 fpm (200 meters per minutes).
• each spectrum is filtered using the frequency filters specified in the above article.
• the value of PSS, in microns, is then calculated as described in the above mentioned article, for each individually filtered spectrum.
• the Surface Smoothness of the side of a paper web is the average of the 10 PSS values measured from the 10 samples taken from the same side of the paper web. Similarly, the Surface Smoothness of the opposite side of the paper web can be measured.
• the smoothness ratio is obtained by dividing the higher value of Surface Smoothness, corresponding to the more textured side of the paper web, by the lower value of Surface Smoothness, corresponding to the smoother side of the paper web.
• Each sample is mounted on a piece of black paper to provide a dark background during scanning.
• the mounted sample is scanned using the AGFA Arcus II scanner.
• the images are scanned into the computer using Adobe Photoshop Version 3.0.5 brand software.
• the Adobe software is augmented with a FotoLook P.S. 2.07.2 brand plugin module available from AGFA-Gevaert.
• the scan settings are set to: automatic, 600 dpi resolution, greyscale (not color).
• the mounted sample is scanned along with a ruler to provide geometric calibration.

Landscapes

• Paper (AREA)
• Laminated Bodies (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
• Multicomponent Fibers (AREA)

Applications Claiming Priority (5)

Publications (2)

Family

ID=27122618

Family Applications (1)

Country Status (14)

Families Citing this family (12)

Family Cites Families (2)

• 1998
  • 1998-02-20 EP EP98908581A patent/EP1027491B1/fr not_active Expired - Lifetime
  • 1998-02-20 ES ES98908581T patent/ES2195321T3/es not_active Expired - Lifetime
  • 1998-02-20 DE DE69814898T patent/DE69814898T2/de not_active Expired - Fee Related
  • 1998-02-20 AT AT98908581T patent/ATE241037T1/de not_active IP Right Cessation
  • 1998-02-20 KR KR1019997007507A patent/KR100356001B1/ko not_active Expired - Fee Related
  • 1998-02-20 JP JP53681498A patent/JP2001522411A/ja active Pending
  • 1998-02-20 BR BR9807589-6A patent/BR9807589A/pt not_active Application Discontinuation
  • 1998-02-20 WO PCT/US1998/003104 patent/WO1998037274A1/fr not_active Ceased
  • 1998-02-20 CN CN98803483A patent/CN1112476C/zh not_active Expired - Fee Related
  • 1998-02-20 CA CA002281693A patent/CA2281693A1/fr not_active Abandoned
  • 1998-02-20 AU AU66582/98A patent/AU732313B2/en not_active Ceased
  • 1998-02-21 MY MYPI98000749A patent/MY116188A/en unknown
  • 1998-02-23 PE PE1998000129A patent/PE62899A1/es not_active Application Discontinuation
  • 1998-02-27 TW TW087102888A patent/TW394805B/zh active

Non-Patent Citations (1)

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