Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F1/00—Wet end of machines for making continuous webs of paper
  • D21F1/44—Watermarking devices
  • D21F1/46—Dandy rolls
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F1/00—Wet end of machines for making continuous webs of paper
  • D21F1/44—Watermarking devices
• • 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

• the present invention relates to a paper comprising a relief pattern on one of its faces.
• This pattern consists of the combination of at least one background and an inlaid area, the weft of the background and the area being of different orientation and shape, so as to achieve an effect of the kind that can be observed. on damask fabrics.
• Damask fabrics are formed by a background which has a weft in one direction and an area embedded in the bottom which has a particular shape and whose weft is in a direction different from the direction of the weft of the background.
• the frames can be such that they form a relief in dots or a relief in dashes.
• the points can be distributed according to a particular grain and the dashes can have particular inclinations and lengths.
• Such damask fabrics are commercially available in numerous variations which allow an almost unlimited choice of patterns.
• the invention therefore aims to provide a new paper which has a relief pattern having the appearance of a damask fabric.
• Papers are known which contain grains. These papers of the prior art comprise grains of more or less round shape which are distributed regularly over the surface of the paper. This kind of seed paper has absolutely no damask effect.
• the papers are made on a paper machine in the traditional way, then using a grain felt or a grain roller, the paper is embossed so as to make recesses on the surface of the paper.
• the grain felt covers one of the wet presses.
• the grain roller is placed at the end of the machine or outside the paper machine and embosses a finished paper.
• the grain papers known from the prior art are papers comprising grains distributed uniformly on the surface.
• the object of the invention is to provide a paper formed on a flat table or on a round shape which has an embossed pattern on at least one of its faces. This pattern consists of the combination of at least one background and an inlaid area, the background and the area having a frame of different orientations and shapes, so as to achieve an effect of the kind that can be observe on damask fabrics.
• the invention also aims to provide a method of manufacturing such a paper with damask effect.
• the invention also aims to provide means for implementing the process for manufacturing a paper with damask effect.
• Figure 1 there is shown a damask fabric with a pattern.
• the damask fabric shown in the Figures is not part of the invention, but allows a better understanding of the aim which the invention seeks to achieve.
• the fabric 1 has patterns formed by a bottom 2 and inlaid areas 3, 4, 5 in the bottom 2.
• the bottom 2 is such that it has rows 6 parallel with points 7 which are equidistant from each other and from the rows 8 of points 7, the rows 6 forming an angle ⁇ with the rows 8.
• the points 7 are more particularly small dashes formed by the weft threads of the weaving passing over the warp threads.
• Zones 3, 4, 5 have diverse and different peripheries. Zones 3, 4, 5 are encrusted in the bottom 2.
• Zone 3 comprises parallel rows 9 of dashes 10 forming an angle ⁇ with the rows 6 of the points 7 of the bottom 2. The angle ⁇ is different from the angle ⁇ .
• zone 4 comprises parallel rows 11 of dashes 12 forming an angle ⁇ with the rows 6 of the points 7 of the bottom 2.
• the angles ⁇ , ⁇ and ⁇ are different from each other.
• the dashes 10, 12 are formed by the weft threads which pass over several warp threads.
• the fabric is composed of a bottom 2 consisting of points distributed uniformly over the surface, these points being aligned in rows, of one or more inlaid zones comprising dashes aligned in parallel rows, the rows of the points of the bottom 2 being oriented differently from the rows of dashes in the inlaid areas, the inlaid areas having different peripheries P.
• the dots and the dashes are in relief relative to the general plane of the background 2.
• Figure 2 there is shown another kind of damask fabric which has a bottom 11 having dashes 12 and not dots.
• FIG. 3 there is shown a bottom 13 consisting of points 14 which are aligned in rows 15 and rows 16, the angle ⁇ between the rows 15 and 16 being 45 °.
• a bottom 17 consisting of dashes 18.
• the points 14 and the dashes 18 are formed by the weft son of the fabric. This is the reason why the dots and dashes of a pattern of a paper will be designated subsequently by the term "weft" by analogy with fabrics.
• FIG. 5 shows an inlaid area 19 which has a periphery P1 and an inlaid area 20 which has a periphery P2.
• the peripheries P1 and P2 have a different shape.
• the inlaid area 19 comprises rows of dashes 21 which form an angle ⁇ with the rows of dots 14 on the bottom 13 and an angle ⁇ with the rows of dashes 18 on the bottom 17.
• the area 20 includes rows of dashes 22 which have a different inclination with respect to the rows of points 14 at the bottom 13 and at the rows of points 18 at the bottom 17.
• zones 19 and 20 must be inlaid, or "embedded” or “inserted” in the bottom 13 or 17, so that the upper surface of the inlaid zone is at the same level as the upper surface of the bottom.
• zones 19 and 20 are encrusted on the background 13 or 17, a different visual effect will be obtained.
• the paper according to the invention includes such a damask pattern.
• the paper according to the invention is therefore a paper characterized in that it comprises a relief pattern on at least one of its faces, said pattern being produced by the combination of at least one background and at least one inlaid area, at least one of the bottoms and at least one of the inlaid areas having screens of different orientation and shape.
• the bottom does not have a frame while at least two zones have frames of different orientation and shape.
• the bottom comprises points aligned in a first series of parallel rows and in a second series of parallel rows, the first series forming a given angle ⁇ with the second series.
• the bottom comprises a series of parallel rows of dashes.
• the inlaid zones each comprise series of parallel rows of dashes, the series of dashes in one zone being inclined relative to the series of dashes in another zone.
• the paper according to the invention is a paper having a grammage greater than 100 g / m 2 , preferably greater than 160 g / m 2 .
• the paper according to the invention is also such that it has received an inking emphasizing the relief of at least one of the encrusted zones.
• the present invention further aims to provide a method of manufacturing the paper mentioned above.
• the pattern is produced on paper made on a "round shape" paper machine.
• the relief pattern is produced by making the imprint of a special canvas on the surface of the sheet of paper.
• the special canvas can thus be placed directly on the round form, or as a replacement for the lifting felt, or as a replacement for a felt from wet presses or a combination of several of these techniques, especially if you want to achieve an effect on both sides of the paper.
• the invention further relates to a fabric allowing the implementation of the method according to the invention.
• a canvas is a woven canvas comprising a pattern, said pattern being produced by the combination of at least one bottom and at least one inlaid area, the bottom and the inlaid area having wefts of different orientation and shape.
• the canvas is woven in a single part comprising the bottom and at least one inlaid area, or else the canvas consists of a background having a weft of a certain orientation in which are cut out. one or more recesses in which one or more zones are embedded having a screen of orientation different from the orientation of the background.
• the zones can be assembled by sewing on the periphery of the zones, welding, gluing on the edges or any other suitable method for joining the encrusted zone or zones.
• the pattern is produced on paper made on a "flat table" paper machine.
• the embossed pattern can be produced using a kind of wheel which covers the entire width of the machine.
• the pattern can be produced outside the machine. You can give the paper a background grain using a felt and make the encrusted areas using a wheel or a grain roller. The pressure applied to the grain roller making it possible to produce the inlaid areas is high, so that the grain of the felt, at the location of the inlaid areas, no longer has its original background weft but has the weft of the inlaid areas.
• the invention further relates to a woven fabric comprising a pattern, said pattern being produced by the combination of at least one bottom and at least one inlaid area, the bottom and the inlaid area having wefts of orientation and shape. different.
• the canvas can be made of metal or synthetic.
• Figure 1 is a view of a damask fabric with a design.
• Figure 2 is a view of another damask fabric having a design different from that of Figure 2.
• Figure 3 is a schematic view of a background.
• Figure 4 is a schematic view of a background different from that of Figure 3.
• Figure 5 is a view of an encrusted area, which is shown alone, bottomless.
• Figure 6 is a schematic view of a pattern according to the invention reported on a paper.
• Figure 7 is a schematic view of a round shape machine provided with the various means according to the invention for producing the paper according to the invention.
• Figures 1, 2, 3, 4 and 5 have already been explained above with respect to damask fabric.
• the patterns shown in these Figures are patterns transferred onto paper according to the invention.
• a paper having a damask effect pattern consists of a background 24 and several inlaid areas 25, 26, 27 and 28.
• the pattern is a relief pattern on at least one of the faces of the paper.
• the bottom 24 comprises for example, rows of points 29 aligned along parallel lines which are called wefts, with reference to the fabrics. These points are made according to the method of the present invention, and they are recessed or in bumps according to the embodiment of the method of the invention used, relative to the surface of the sheet of paper.
• the bottom may also include dashes, such as those shown in Figure 4, these dashes being in rows or wefts. Like the dots, the dashes are hollow or bumpy with respect to the surface of the sheet of paper, depending on the method used.
• the frames 30 of the bottom 24 have a certain orientation.
• zones 25, 26, 27 and 28 have peripheries of different shapes from each other. Furthermore, the zones 25, 26, 27 and 28 have rows 31, 32, 33 and 34 respectively of dashes. The rows or frames 31, 32, 33 and 34 have a different orientation from that of the frame 30 from the bottom and different from each other.
• FIG 7 there is shown a round shape paper machine which includes the means for making the paper according to the invention.
• the machine has a round shape 35 which rotates along its axis 36 in the direction of the arrow F1.
• the round shape is dipped in an aqueous suspension 37 of cellulose fibers comprising other components usually used in stationery, such as fillers, binders, etc.
• a wet sheet 38 of cellulosic fibers is formed at the exit of the round shape and is conventionally taken up by a gripping felt. Then, the sheet is sent between pressing rollers (not shown) to remove the water and finally, it is dried on drying rollers (not shown).
• the method according to the invention consists, according to one of the embodiments, in placing a canvas 39 directly on the round shape 35.
• the forming canvas comprises a relief pattern produced by the combination of two or several frames of different orientations and shapes.
• Another embodiment of the invention consists in replacing the gripping felt with a gripping cloth 40.
• This cloth 40 rotates around the two rollers 41, 42 and forms a closed loop.
• the canvas has a relief pattern produced by the combination of two or more wefts of different orientations and shapes.
• presses for pressing the wet sheet to remove the water there are shown presses for pressing the wet sheet to remove the water.
• the upper felt 44 of the wet presses is replaced by the fabric described above.
• the fabric could replace a lower felt.
• a wheel which has a pattern.
• This wheel has the width of the sheet and creates a pattern on the sheet which has already been grained over its entire surface by a traditional process.
• the pattern according to the invention can also be produced by means of a grain roller 46 which produces a pattern on the sheet which has already been grained by one of the techniques described above.
• the paper according to the invention can be used inter alia as printing and / or writing paper, it can be colored en masse and / or it can be coated after having produced the pattern according to the invention. In the case of producing patterns by a grain roller, this roller can be inked to produce a simultaneous printing enhancing the perception of the relief.

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• Paper (AREA)
• Decoration Of Textiles (AREA)
• Treatment Of Fiber Materials (AREA)
• Bag Frames (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9512425

Family Applications (1)

Country Status (7)

Families Citing this family (8)

Family Cites Families (7)

• 1997
  • 1997-10-20 FR FR9713114A patent/FR2769927B1/fr not_active Expired - Fee Related
• 1998
  • 1998-10-20 EP EP98950166A patent/EP1025308B1/de not_active Expired - Lifetime
  • 1998-10-20 US US09/529,816 patent/US6773548B1/en not_active Expired - Fee Related
  • 1998-10-20 WO PCT/FR1998/002248 patent/WO1999020835A1/fr not_active Ceased
  • 1998-10-20 JP JP2000517147A patent/JP2001521068A/ja active Pending
  • 1998-10-20 DE DE69814897T patent/DE69814897D1/de not_active Expired - Lifetime
  • 1998-10-20 AT AT98950166T patent/ATE241036T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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