EP0612881B1 - Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie - Google Patents

Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie Download PDF

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Publication number
EP0612881B1
EP0612881B1 EP94103974A EP94103974A EP0612881B1 EP 0612881 B1 EP0612881 B1 EP 0612881B1 EP 94103974 A EP94103974 A EP 94103974A EP 94103974 A EP94103974 A EP 94103974A EP 0612881 B1 EP0612881 B1 EP 0612881B1
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Prior art keywords
yarns
fabric
cmd
yarn
fabric according
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EP94103974A
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German (de)
English (en)
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EP0612881A1 (fr
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Henry J. Lee
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V.ASTEN S.C.
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Vasten Sc
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Priority claimed from US07/534,164 external-priority patent/US5103874A/en
Priority claimed from US07/567,974 external-priority patent/US5092373A/en
Priority claimed from US07/654,008 external-priority patent/US5117865A/en
Application filed by Vasten Sc filed Critical Vasten Sc
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • 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
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • 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
    • D21F1/0027—Screen-cloths
    • D21F1/0054—Seams thereof

Definitions

  • the present invention relates to papermakers fabrics and in particular to fabrics comprised of flat monofilament yarns.
  • Papermaking machines generally are comprised of three sections: forming, pressing, and drying. Papermakers fabrics are employed to transport a continuous paper sheet through the papermaking equipment as the paper is being manufactured. The requirements and desirable characteristics of papermakers fabrics vary in accordance with the particular section of the machine where the respective fabrics are utilized.
  • U.S. Patent No. 4,290,209 discloses a fabric woven of flat monofilament warp yarns
  • U.S. Patent No. 4,755,420 discloses a non-woven construction where the papermakers fabric is comprised of spirals made from flat monofilament yarns.
  • U.S. Patent No. 4,438,788 discloses a dryer fabric having three layers of cross machine direction yarns interwoven with a system of flat monofilament machine direction yarns such that floats are created on both the top and bottom surfaces of the fabric. The floats tend to provide a smooth surface for the fabric.
  • Permeability is an important criteria in the design of papermakers fabrics. In particular, with respect to fabrics made for running at high speeds on modern drying equipment, it is desirable to provide dryer fabrics with relatively low permeability.
  • U.S. Patent No. 4,290,209 discloses the use of flat monofilament warp yarns woven contiguous with each other to provide a fabric with reduced permeability.
  • additional means such as stuffer yarns, are required to reduce the permeability of the fabric.
  • stuffer yarns it is desirable to avoid the use of fluffy, bulky stuffer yarns to reduce permeability which make the fabric susceptible to picking up foreign substances or retaining water.
  • U.S. Patent No. 4,290,209 and U.S. Patent No. 4,755,420 note practical limitations in the aspect ratio (cross-sectional width to height ratio) of machine direction warp yarns defining the structural weave of a fabric.
  • the highest practical aspect ratio disclosed in those patents is 3:1, and the aspect ratio is preferably, less than 2:1.
  • U.S. Patent No. 4,621,663, assigned to the assignee of the present invention discloses one attempt to utilize high aspect ratio yarns (on the order of 5:1 and above) to define the surface of a papermakers dryer fabric.
  • a woven base fabric is provided to support the high aspect ratio surface yarns.
  • the woven base fabric is comprised of conventional round yarns and provides structural support and stability to the fabric disclosed in that patent.
  • U.S. Patent No. 4,815,499 discloses the use of flat yarns in the context of a forming fabric. That patent discloses a composite fabric comprised of an upper fabric and a lower fabric tied together by binder yarns. The aspect ratio employed for the flat machine direction yarns in both the upper and lower fabrics are well under 3:1.
  • papermakers fabrics are configured as endless belts. Weaving techniques are available to initially weave fabrics endless. However, there are practical limitations on the overall size of endless woven fabrics as well as inherent installation difficulties. Moreover, not all papermaking equipment is designed to accept the installation of an endless fabric.
  • Flat woven fabrics are often supplied having opposing ends which are seamed together during installation of the fabric on papermaking equipment. Usually one end of the fabric is threaded through the serpentine path defined by the papermaking equipment and is then joined to its opposing end to form a continuous belt.
  • a variety of seaming techniques are well known in the art.
  • One conventional method of seaming is to form the machine direction yarns on each end of the fabric into a series of loops.
  • the loops of the respective fabric ends are then intermeshed during fabric installation to define a channel through which a pintle is inserted to lock the ends together.
  • U.S. Patent Nos. 4,026,331; 4,438,789; 4,469,142; 4,846,231; 4,824,525 and 4,883,096 disclose a variety of pin seams wherein the machine direction yarns are utilized to form the end loops.
  • the machine direction yarn projects from the end of the fabric and weaves back into the fabric adjacent to itself. Accordingly, the loops inherently have a twist or torque factor and are not entirely orthogonal to the plane of the fabric.
  • U.S. Patent 4,883,096 specifically addresses this problem.
  • US 2554034 describes the construction of a papermakers felt consisting of round non-woollen warp yarns and a mixture of round and flat weft yarns.
  • the flat weft yarns are woven through the warp yarns in such a way that they become surface yarns on one surface or the other of the felt - usually alternating between the top surface and the bottom surface.
  • an industrial fabric for example a papermakers fabric, comprising a single layer of CMD yarns interwoven with a system of MD yarns wherein alternate CMD yarns are crimped to a significantly greater degree than the respective adjacent other CMD yarns in said single CMD layer characterised in that at least some of said MD yarns weave knuckles around each said alternate CMD yarns and all of said MD yarns weave in floats either over or under said other CMD yarns
  • said CMD yarns include yarns of at least two different diameters and are interwoven in a selected repeat pattern such that the CMD yarns having the relatively smaller diameter are crimped significantly more than the CMD yarns having the relatively larger diameter.
  • said MD yarns are flat monofilament yarns having paired upper and lower yarns stacked in vertical alignment; and the actual warp fill of at least said upper MD yarns is in the range of 80%-125%.
  • the fabric 10 comprises upper, middle and lower layers of cross machine direction (hereinafter CMD) yarns 11, 12, 13, respectively, interwoven with a system of MD yarns 14-19 which sequentially weave in a selected repeat pattern.
  • the MD yarn system comprises upper MD yarns 14, 16, 18 which interweave with CMD yarns 11, 12 and lower MD yarns 15, 17, 19 which interweave with CMD yarns 12, 13.
  • the upper MD yarns 14, 16, 18 define floats on the top surface of the fabric 10 by weaving over two upper layer CMD yarns 11 dropping into the fabric to weave in an interior knuckle under one middle layer CMD yarn 12 and under one CMD yarn 11 and thereafter rising to the surface of the fabric to continue the repeat of the yarn.
  • the floats over upper layer CMD yarns 11 of upper MD yarns 14, 16, 18 are staggered so that all of the upper and middle layer CMD yarns 11, 12 are maintained in the weave.
  • the disclosed weave pattern with respect to Figures 1, 2 and 3a results in the top surface of the fabric having a twill pattern. It will be recognised by those of ordinary skill in the art that the length of the float, the number of MD yarns in the repeat, and the ordering of the MD yarns may be selected as desired so that other patterns, twill or non-twill, are produced.
  • lower MD yarns 15, 17, 19, weave directly beneath upper MD yarns 14, 16, 18, respectively, in a vertically stacked relationship.
  • the lower yarns weave in an inverted image of their respective upper yarns.
  • Each lower MD yarn 15, 17, 19 floats under two lower layer CMD yarns 13, rises into the fabric over one CMD yarn 13 and forms a knuckle around one middle layer CMD yarn 12 whereafter the yarn returns to the lower fabric surface to continue its repeat floating under the next two lower layer CMD yarns 13.
  • the interior knuckle, formed around the middle layer CMD yarns 12 by one MD yarn, is hidden by the float of the other MD yarn.
  • lower MD yarn 15 is depicted weaving a knuckle over CMD yarn 12 while MD yarn 14 is weaving its float over CMD yarns 11, thereby hiding the interior knuckle of lower MD yarn 15.
  • upper MD yarn 18 is depicted weaving a knuckle under yarn CMD yarn 12 while it is hidden by lower MD yarn 19 as it floats under CMD yarns 13.
  • the upper MD yarns 14, 16, 18, are woven contiguous with respect to each other. This maintains their respective parallel machine direction alignment and reduces permeability.
  • Such close weaving of machine direction yarns is known in the art as 100% warp fill as explained in U.S. Patent No. 4,290,209.
  • actual warp count in a woven fabric may vary between about 80%-125% in a single layer and still be considered 100% warp fill.
  • MD yarns 14, 16, and 18 also serves to force MD yarns 15, 17, 19, into their stacked position beneath respective MD yarns 14, 16, 18.
  • MD yarns 15, 17, and 19 are the same size as MD yarns 14, 16, and 18 so that they are likewise woven 100% warp fill. This results in the overall fabric of the preferred embodiment having 200% warp fill of MD yarns.
  • the lower MD yarns 15, 17, 19 are also preferably woven 100% warp fill, they likewise have the effect of maintaining the upper MD yarns 14, 16, 18 in stacked relationship with the respect to lower MD yarns 15, 17, 19. Accordingly, the respective MD yarn pairs 14 and 15, 16 and 17, 18 and 19 are doubly locked into position thereby enhancing the stability of the fabric.
  • the high aspect ratio of the MD yarns translates into reduced permeability.
  • High aspect ratio yarns are wider and thinner than conventional flat yarns which have aspect ratios less than 3:1 and the same cross-sectional area. Equal cross-sectional area means that comparable yarns have substantially the same linear strength.
  • the greater width of the high aspect ratio yarns translates into fewer interstices over the width of the fabric than with conventional yarns so that fewer openings exist in the fabric through which fluids may flow.
  • the relative thinness of the high aspect ratio yarns enables the flat MD yarns to more efficiently cradle, i.e. brace, the cross machine direction yarns to reduce the size of the interstices between machine direction and cross machine direction yarns.
  • a fabric woven with a single layer system of a flat machine direction warp having a cross-sectional width of 1.5 units and a cross-sectional height of 1 unit, i.e. an aspect ratio of 1.5:1, is shown.
  • Such fabric could be replaced by a fabric having the present dual stacked MD yarn system with MD yarns which are twice the width, i.e. 3 units, and half the height, i.e. 0.5 units.
  • Such MD yarns thusly having a fourfold greater aspect ratio of 6:1, as illustrated in Figure 3a.
  • the conventional single MD yarn system fabric has six conventional contiguous flat yarns over 9 units of the fabric width having a cross-sectional area of 9 square units, i.e. 6 ⁇ (1u. ⁇ 1.5u.).
  • the thinner, wider high aspect ratio yarns, woven as contiguous stacked MD yarns define a fabric which has three stacked pairs of MD yarns over 9 units of fabric width.
  • Such fabric also has a cross-sectional area of 9 square units, i.e. (3*(0.5u.*3u.)) + (3*(0.5u.*3u.)), over 9 units of fabric width.
  • a fabric was woven in accordance with Figures 1, 2 and 3, wherein the CMD yarns 11, 12, 13 were polyester monofilament yarns 0.6mm in diameter interwoven with MD yarns 14-19 which were flat polyester monofilament yarns having a width of 1.12mm and a height of 0.2mm. Accordingly, the aspect ratio of the flat MD yarns was 5.6:1.
  • the fabric was woven at 48 warp ends per inch with a loom tension of 40 pounds per linear 2.54cm (1 inch) and 12.5 CMD pick yarns per 2.54 cm (1 inch) per layer (three layers).
  • the fabric was heat set in a conventional heat setting apparatus under conditions of temperature, tension and time within known ranges for polyester monofilament yarns.
  • conventional polyester fabrics are heat set within parameters of 340°F-380°F temperature, 6-15 pounds per linear 2.54 cm (1 inch) tension, and 3-4 minutes time.
  • the fabrics of the present invention are more tolerant to variations in heat setting parameters.
  • the fabric exhibited a warp modulus of 6000 PSI (pounds per square inch) measured by the ASTM D-1682-64 standard of the American Society for Testing and Materials.
  • the fabric stretched less than 0.2% in length during heat setting. This result renders the manufacture of such fabrics very reliable in achieving desired dimensional characteristic as compared to conventional fabrics.
  • the resultant heat set fabric had 12.5 CMD yarns per inch per layer with 106% MD warp fill with respect to both upper and lower MD yarns resulting in 212% actual warp fill for the fabric.
  • the finished fabric has a permeability of 83CFM as measured by the ASTM D-737-75 standard.
  • top MD yarns 14, 16, 18 or bottom MD yarns 15, 17, 19 are woven at 100% warp fill
  • the overall warp fill for the stacked fabric will be significantly greater than 100% which will contribute to the reduction of permeability of the fabric.
  • the instant fabric having stacked MD yarns will be recognised as having a significantly greater percentage of a warp fill than fabrics which have an actual warp fill of 125% of non-stacked MD yarns brought about by crowding and lateral undulation of the warp strands.
  • a fabric may be woven having 100% fill for either the upper or lower MD yarns with a lesser degree of fill for the other MD yarns by utilizing yarns which are not as wide as those MD yarns woven at 100% warp fill.
  • upper yarns 14, 16, 18 could be 1 unit wide with lower layer yarns 15, 17, 19 being .75 units wide which would result in a fabric having approximately 175% warp fill.
  • Such variations can be used to achieve a selected degree of permeability.
  • such variations could be employed to make a forming fabric.
  • the lower MD yarns would be woven 100% warp fill to define the machine side of the fabric and the upper MD yarns would be woven at a substantially lower percentage of fill to provide a more open paper forming surface.
  • the stacked pair MD weave permits the formation of orthogonal seaming loops within MD yarns.
  • CMD yarns are removed leaving the crimped MD yarns 14, 15 exposed ( Figure 4b).
  • One of the yarns, for example, MD lower yarn 15, of the stacked pair is trimmed back a selected distance leaving the other exposed MD yarn 14 of the MD yarn pair and vacated space between the CMD yarns, as illustrated in Figure 4c.
  • Upper MD yarn 14 is then backwoven into the space vacated in the weave pattern by lower MD yarn 15 such that a loop L is formed on the end of the fabric, as illustrated in Figure 4d.
  • upper layer yarn 14 is backwoven into the fabric to provide sufficient strength for the end loop and assure retention of the free end of MD yarn 14 within the weave of the fabric.
  • the inverted image weave permits the crimp of the upper MD yarn 14 to match the space vacated by the lower MD yarn 15 which further enhances the strength of the end loop.
  • adjacent yarn pair 16, 17 is processed in a similar manner.
  • upper yarn 16 is looped back and backwoven in the fabric, it is pulled against the CMD yarns.
  • the crowding of the yarns secure the orthogonal orientation of the seaming loops.
  • each upper MD yarn 14 forms a loop and the other upper MD yarns 16, 18 are backwoven against the endmost CMD yarn of the fabric.
  • every third upper MD yarn defines a loop such that an array of loops is created on each end of the fabric.
  • the seam is assembled by intermeshing the opposing arrays of loops and o inserting a pintle yarn between the intermeshed loops.
  • loop forming yarns 14 would all be backwoven approximately the same distance within the fabric to provide sufficient strength to prevent the loops from being pulled apart during normal usage.
  • Non-loop forming yarns 16, 18, would preferably be backwoven a somewhat shorter distance since during usage no load is imparted to those yarns.
  • upper MD yarns 14 would be backwoven approximately 7.62cm (3 inches)
  • MD yarns 16 would be backwoven approximately 5.08cm (2 inches)
  • MD yarns 18 would be backwoven approximately 2.54cm (1 inch).
  • Respective lower layer yarns 15, 17, 19 would be trimmed to complement the backweaving of their respective MD yarn pair yarns 14, 16, 18.
  • Papermakers fabric 20 is comprised of a single layer of CMD yarns 21a, 21b interwoven with a system of stacked MD yarns 22-25 which weave in a selected repeat pattern.
  • the MD yarn system comprises upper MD yarns 22, 24 which define floats on the top surface of the fabric 20 by weaving over three CMD yarns, under the next one CMD yarn 21a to form a knuckle, and thereafter returning to float over the next three CMD yarns in a continuation of the repeat.
  • Lower MD yarns 23, 25 weave directly beneath respective upper MD yarns 22, 24 in a vertically stacked relationship.
  • the lower MD yarns weave in an inverted image of their respective upper MD yarns.
  • Each lower MD yarn 23, 25 floats under three CMD yarns, weaves upwardly around the next one CMD yarn 21a forming a knuckle and thereafter continues in the repeat to float under the next three CMD yarns.
  • the knuckles formed by the lower MD yarns 23, 25 are hidden by the floats defined by the upper MD yarns 22, 24 respectively. Likewise the knuckles formed by the upper MD yarns 22, 24 are hidden by the floats of the lower MD yarns 23, 25 respectively.
  • the caliper of the fabric proximate the knuckle area shown in Figure 7, has a tendency to be somewhat greater than the caliper of the fabric at non-knuckle CMD yarns 21b, shown in Figure 6.
  • the CMD yarns 21a around which the knuckles are formed become crimped which reduces the caliper of the fabric in that area as illustrated in Figure 7.
  • slightly larger diameter CMD yarns are preferably used for CMD yarns 21b, shown in Figure 6, which are not woven around as knuckles by the MD yarns to eliminate any difference in fabric caliber.
  • the diameter of the larger CMD yarn 21b equals the diameter d of the smaller CMD yarns 21a plus the thickness t of the MD yarns.
  • a fabric was woven in accordance with Figures 5-8, wherein the CMD yarns 21a, 21b were polyester monofilament yarns 0.6mm and 0.8mm, respectively, in diameter interwoven with MD yarns 22-25 which were flat polyester monofilament yarns having a width of 1.12mm and a height of 0.2mm. Accordingly, the aspect ratio of the flat MD yarns was 5.6:1.
  • the fabric was woven at 48 total warp ends per 2.54cm (1 inch) with a loom tension of 40 PLI pounds per linear 2.54cm (1 inch) and 20 CMD total pick yarns per 2.54cm (1 inch). The permeability averaged 90 CFM in the resultant fabric.
  • fabric was woven in accordance with Figures 5, 6 and 7, wherein the CMD yarns 21a, 21b were polyester monofilament yarns 0.7mm in diameter interwoven with MD yarns 22-25 which were flat polyester monofilament yarns having a width of 1.12mm and a height of 0.2mm. Accordingly, the aspect ratio of the flat MD yarns was 5.6:1.
  • the fabric was woven at 22 CMD pick yarns per 2.54cm (1 inch).
  • the fabric was heat set using conventional methods.
  • the fabric exhibited a modulus of 6000 PSI.
  • the resultant fabric had 22 CMD yarns per inch with 106% MD warp fill with respect to both upper and lower MD yarns resulting in 212% actual warp fill for the fabric.
  • the finished fabric had a caliper of 0.122cm (.048 inches) and an air permeability of 60CFM.
  • the high aspect ratio yarns 22-24 effectively brace the CMD yarns 21a in the weave construction.
  • the degrees of arc over which MD yarns 22-25 are in contact with CMD yarns 21a is dependent upon the spacing of the CMD yarns within the weave.
  • the degree of contact arc can be maintained in a preferred range of between 60° to 180° by varying the pick count of the CMD yarns from 14 picks per inch to a maximum of 28.22 picks per 2.54cm (1 inch).
  • the degree of contact arc ⁇ is approximately 101°. This results in a bracking contact area of approximately 0.79mm 2 at each knuckle in the fabric.
  • Applicant's use of high ratio aspect yarns i.e. yarns having a width:thickness ratio of at least 3:1, provides for increased bracing contact of the flat MD yarns with the CMD yarns 21a. This is comparatively exemplified by modifying the equation for contact bracing area, CBA, to be defined in terms of the thickness of the MD yarns.
  • seaming loops are formed by upper MD yarns 22.
  • the respective lower MD yarns 23 are trimmed a selected distance from the fabric end and the upper MD yarns 22 are backwoven into the space vacated by the trimmed lower MD yarns 23.
  • Upper MD yarns 24 are similarly backwoven into the space vacated by trimming back lower MD yarns 25. However, as best seen in Figure 9, upper MD yarns 24 are backwoven against the madness CMD yarn 21b.
  • a series of seaming loops is formed on each of the opposing fabric ends 27, 28.
  • the respective end loops formed by MD yarns 22 are intermeshed and a pintle 30 is inserted therethrough to lock the intermeshed series of loops together.
  • the seaming loops L are formed by backweaving MD yarns 22 directly beneath themselves, no lateral twist or torque is imparted on the loop and the loops are orthogonal with the plane of the fabric. This facilitates the intermeshing of the loop series of the opposing fabric ends 27, 28.
  • the orthogonal loops are particularly advantageous where, as shown in Figure 9, the MD yarns 22, 24 are 100% warp fill and adjacent loops are separated by individual MD yarns of the same width as the loop MD yarns 22. Lateral torque or twist on the seaming loops make the seaming process more difficult particularly where the loop-receiving gaps between the loops of one fabric end are essentially the same width as the loops on the opposing fabric end and vice versa.
  • the loop forming MD yarns 22 are preferably backwoven approximately 5.08cm (2 inches) while the non-loop forming MD yarns 24 are preferably backwoven 2.54cm (1 inch).
  • a variety of other weave patterns employing the paired stacked weave construction of the instant invention may be constructed within the scope of the present invention. For example, in some applications it may be desirable to have MD yarn surface floats over six or more CMD yarns. Such fabrics are readily constructed in accordance with the teachings of the present invention.

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  • Paper (AREA)
  • Woven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Stringed Musical Instruments (AREA)
  • Decoration Of Textiles (AREA)
  • Multicomponent Fibers (AREA)
  • Knitting Of Fabric (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Tissu industriel, par exemple toile (20) pour machine à papier, comprenant une unique couche de fils STM (21a, 21b) entrelacés avec un système de fils SM (22-25), dans lequel un sur deux des fils STM (21a) est affecté d'une ondulation d'un degré beaucoup plus grand que les autres fils STM (21b) qui y sont respectivement adjacents dans ladite unique couche STM, caractérisé en ce qu'au moins certains desdits fils SM (22-25) forment des coudes autour de chacun desdits un sur deux des fils STM (21a) et tous lesdits fils SM forment des flottés au-dessus ou au-dessous desdites autres fils STM (21b).
  2. Tissu selon la revendication 1, dans lequel lesdits fils STM (21a, 21b) comprennent des fils d'au moins deux diamètres différents et sont entrelacés dans un motif répétitif choisi de telle manière que les fils STM (21a) ayant le diamètre relativement plus petit soient affectés d'une ondulation nettement supérieure à celle des fils STM (21b) ayant le diamètre relativement plus grand.
  3. Tissu selon la revendication 1 ou 2, dans lequel : lesdits fils SM (22-25) sont des fils monofilaments plats comprenant des fils supérieurs et inférieurs d'une même paire superposés en alignement vertical ; et le remplissage réel en chaîne d'au moins lesdits fils SM supérieurs (22, 24) est dans l'intervalle de 80 %-125 %.
  4. Tissu selon la revendication 1 ou 2, dans lequel les fils STM (21a, 21b) alternent entre un premier diamètre relativement plus grand et un deuxième diamètre relativement plus petit dans ladite unique couche STM.
  5. Tissu selon la revendication 4, dans lequel lesdits fils SM (22-25) sont des fils monofilaments plats ayant une épaisseur t et ledit premier diamètre est approximativement égal audit deuxième diamètre plus t.
  6. Tissu selon la revendication 4, dans lequel ledit premier diamètre est d'environ 0,8 mm, ledit deuxième diamètre est d'environ 0,6 mm et lesdits fils SM (22-25) sont des fils monofilaments plats ayant une épaisseur d'environ 0,2 mm.
  7. Tissu selon la revendication 1, dans lequel lesdits fils SM (22-25) forment une répétition par rapport à quatre desdits fils STM (21a, 21b) avec un flotté de trois, de sorte que lesdits premier et troisième fils STM situés dans le flotté ne sont pas les fils STM qui ont le degré d'ondulation nettement plus grand.
  8. Tissu selon la revendication 7, dans lequel le flotté de certain desdits fils SM (22-25) est formé au-dessus de trois fils STM et le flotté de l'autre desdits fils SM est formé au-dessous de trois fils STM dans le motif répété du tissu.
  9. Tissu selon la revendication 8, dans lequel chacun des fils SM (23, 25) qui ont des flottés sous les fils STM (21a, 21b) sont disposés au-dessous d'au moins un fil SM (22, 25) qui a son flotté placé au-dessus des fils STM.
  10. Tissu selon les revendications 1, 2, 7, 8 ou 9, dans lequel lesdits fils SM (22-25) sont des fils monofilaments plats ayant un rapport d'aspect supérieur à 3:1.
EP94103974A 1990-06-06 1991-03-15 Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie Expired - Lifetime EP0612881B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US07/534,164 US5103874A (en) 1990-06-06 1990-06-06 Papermakers fabric with stacked machine direction yarns
US534164 1990-06-06
US07/567,974 US5092373A (en) 1990-06-06 1990-08-15 Papermakers fabric with orthogonal machine direction yarn seaming loops
US567974 1990-08-15
US07/654,008 US5117865A (en) 1990-06-06 1991-02-14 Papermakers fabric with flat high aspect ratio yarns
US654008 1991-02-14
EP91907325A EP0532510B1 (fr) 1990-06-06 1991-03-15 Tissu de papier à fils sens machine plats

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP91907325.4 Division 1991-12-22

Publications (2)

Publication Number Publication Date
EP0612881A1 EP0612881A1 (fr) 1994-08-31
EP0612881B1 true EP0612881B1 (fr) 1997-06-11

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EP94103975A Expired - Lifetime EP0612882B1 (fr) 1990-06-06 1991-03-15 Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie
EP92122165A Expired - Lifetime EP0553501B1 (fr) 1990-06-06 1991-03-15 Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie
EP94103974A Expired - Lifetime EP0612881B1 (fr) 1990-06-06 1991-03-15 Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie
EP91907325A Expired - Lifetime EP0532510B1 (fr) 1990-06-06 1991-03-15 Tissu de papier à fils sens machine plats

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP94103975A Expired - Lifetime EP0612882B1 (fr) 1990-06-06 1991-03-15 Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie
EP92122165A Expired - Lifetime EP0553501B1 (fr) 1990-06-06 1991-03-15 Toile pour papeterie ayant des fils dans le sens de la longueur de la machine à section droite aplatie

Family Applications After (1)

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EP91907325A Expired - Lifetime EP0532510B1 (fr) 1990-06-06 1991-03-15 Tissu de papier à fils sens machine plats

Country Status (12)

Country Link
EP (4) EP0612882B1 (fr)
JP (4) JP3655301B2 (fr)
AT (4) ATE172506T1 (fr)
AU (1) AU673615B2 (fr)
CA (1) CA2084054C (fr)
DE (6) DE69130398T2 (fr)
DK (4) DK0612882T3 (fr)
ES (4) ES2107977T3 (fr)
FI (2) FI96881B (fr)
NO (3) NO305216B1 (fr)
NZ (1) NZ237553A (fr)
WO (1) WO1991019044A1 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5411062A (en) * 1990-06-06 1995-05-02 Asten Group, Inc. Papermakers fabric with orthogonal machine direction yarn seaming loops
USRE35966E (en) * 1990-06-06 1998-11-24 Asten, Inc. Papermakers fabric with orthogonal machine direction yarn seaming loops
ATE131555T1 (de) * 1991-10-11 1995-12-15 Asten Inc Papiermachergewebe mit verbindungsnaht aus eigenen faden und verfahren zu seiner herstellung
CA2065127C (fr) * 1991-10-11 1996-04-23 C. Barry Johnson Toile tissee sans fin de machine a papier et methode de conjection
DE4302031C1 (de) * 1993-01-26 1993-12-16 Heimbach Gmbh Thomas Josef Trockensieb sowie Verfahren zu dessen Herstellung
BR9404656A (pt) * 1993-03-19 1999-06-15 Jwi Ltd Costura por agulha com alta densidade de laçada
GB9417720D0 (en) * 1994-09-03 1994-10-19 Scapa Group Plc Papermakers fabric
US5503196A (en) 1994-12-07 1996-04-02 Albany International Corp. Papermakers fabric having a system of machine-direction yarns residing interior of the fabric surfaces
US5865219A (en) * 1997-07-31 1999-02-02 Asten, Inc. Double layer papermaking fabric having a high stability weave
US6079454A (en) * 1997-11-24 2000-06-27 Astenjohnson, Inc. Loop/tie-back woven loop seam press base
FR2789702B1 (fr) * 1999-02-16 2001-03-30 Cofpa Jonction a armure symetrique pour bande tissee a armure asymetrique
DE19923088C1 (de) * 1999-05-20 2000-10-12 Heimbach Gmbh Thomas Josef Papiermaschinenbespannung, insbesondere als Trockensieb
JP2002013088A (ja) * 2000-06-27 2002-01-18 Ichikawa Woolen Textile Co Ltd 抄紙用フエルト
US7121306B2 (en) 2001-07-05 2006-10-17 Astenjohnson, Inc. Industrial fabric including yarn assemblies
US20030208886A1 (en) * 2002-05-09 2003-11-13 Jean-Louis Monnerie Fabric comprising shaped conductive monofilament used in the production of non-woven fabrics
US6902652B2 (en) * 2003-05-09 2005-06-07 Albany International Corp. Multi-layer papermaker's fabrics with packing yarns
DE102005056618A1 (de) * 2005-11-25 2007-05-31 Voith Patent Gmbh Gewebegefüge
JP4263201B2 (ja) * 2006-06-30 2009-05-13 シキボウ株式会社 抄紙用ドライヤーカンバス
US7617846B2 (en) * 2006-07-25 2009-11-17 Albany International Corp. Industrial fabric, and method of making thereof
US8025969B2 (en) 2008-10-21 2011-09-27 Voith Paper Holding Gmbh & Co. Kg PET yarns with improved loop tensile properties
CN104631189A (zh) * 2015-01-28 2015-05-20 安徽华宇网业有限公司 三经线扁丝干网
DE102015101449A1 (de) * 2015-02-02 2016-08-04 AstenJohnson PGmbH Industrielles Gewebe, Verfahren zur Herstellung eines Vliesstoffs sowie Verwendung eines industriellen Gewebes
CN104818642B (zh) * 2015-05-22 2016-08-17 安平县鑫鹏网带有限公司 一种工业织物
CN108291363A (zh) * 2015-09-30 2018-07-17 艾斯登强生股份有限公司 高稳定性堆叠经干燥器织物

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554034A (en) * 1948-08-18 1951-05-22 Orr Felt & Blanket Company Papermaker's felt
DE1206717B (de) * 1961-07-06 1965-12-09 Karl Ulrich Schuster Papiermaschinensieb
FR1396549A (fr) * 1964-03-13 1965-04-23 Martel Catala & Cie Ets Perfectionnements apportés aux moyens pour l'élaboration de bandes sans fin tissées à fils plastiques et à fils métalliques, ainsi qu'aux bandes correspondantes
US4123022A (en) * 1977-09-12 1978-10-31 Albany International Corp. Seam for forming wires and dryer felts
NZ188692A (en) * 1977-10-28 1982-03-30 Jwi Ltd Dryer fabric for paper making machine machine direction strands have flattened cross-section
US4290209A (en) * 1978-05-17 1981-09-22 Jwi Ltd. Dryer fabric
US4438789A (en) * 1981-06-04 1984-03-27 Jwi Ltd. Woven pin seam in fabric and method
US4421819A (en) * 1982-02-23 1983-12-20 Jwi Ltd. Wear resistant paper machine fabric
JPS60119293A (ja) * 1983-11-30 1985-06-26 日本フィルコン株式会社 製紙用織物
US5114777B2 (en) * 1985-08-05 1997-11-18 Wangner Systems Corp Woven multilayer papermaking fabric having increased stability and permeability and method
SU1441840A1 (ru) * 1986-07-24 1990-09-23 Пермский филиал всесоюзного научно-исследовательского института целлюлозно-бумажной промышленности Всесоюзного научно-производственного объединения целлюлозно-бумажной промышленности Синтетическа ткана сетка дл бумагоделательной машины
CA1277209C (fr) * 1986-11-28 1990-12-04 Dale B. Johnson Faconnage d'un tissu composite
US4705601A (en) * 1987-02-05 1987-11-10 B.I. Industries, Inc. Multi-ply paper forming fabric with ovate warp yarns in lowermost ply
US4865083A (en) * 1987-06-24 1989-09-12 Asten Group, Inc. Seamed multi-layered papermaker's fabric
EP0493458B1 (fr) * 1989-09-19 1993-09-08 Jwi Limited Toile d'egouttage pour section de presse
US4979543A (en) * 1989-11-16 1990-12-25 Albany International Corp. Pin seamed planar press fabric

Also Published As

Publication number Publication date
EP0553501A3 (en) 1993-12-22
ES2107978T1 (es) 1997-12-16
NO924688L (no) 1993-02-05
DE69130423T2 (de) 1999-04-22
AU7039494A (en) 1994-11-03
DE69126545T2 (de) 1997-12-18
JPH05509134A (ja) 1993-12-16
NZ237553A (en) 1995-03-28
DK0553501T3 (da) 1999-07-05
DE553501T1 (de) 1998-03-12
EP0553501A2 (fr) 1993-08-04
DE69130398D1 (de) 1998-11-26
NO305215B1 (no) 1999-04-19
DK0612882T3 (da) 1999-06-28
ATE114006T1 (de) 1994-11-15
ES2063504T3 (es) 1995-01-01
ES2107977T1 (es) 1997-12-16
DE69130398T2 (de) 1999-03-11
NO924688D0 (no) 1992-12-04
DK0532510T3 (da) 1995-04-24
DE69130423D1 (de) 1998-12-03
ATE154403T1 (de) 1997-06-15
AU673615B2 (en) 1996-11-14
NO940200D0 (no) 1994-01-20
NO305216B1 (no) 1999-04-19
JPH111886A (ja) 1999-01-06
NO309435B1 (no) 2001-01-29
FI20031544A (fi) 2003-10-22
FI96881B (fi) 1996-05-31
EP0612882A1 (fr) 1994-08-31
DE69105130D1 (de) 1994-12-15
ES2107977T3 (es) 1998-12-16
EP0612881A1 (fr) 1994-08-31
DE69126545D1 (de) 1997-07-17
CA2084054A1 (fr) 1991-12-07
ATE172764T1 (de) 1998-11-15
ATE172506T1 (de) 1998-11-15
JP3179753B2 (ja) 2001-06-25
EP0532510B1 (fr) 1994-11-09
NO974419D0 (no) 1997-09-24
JPH111885A (ja) 1999-01-06
CA2084054C (fr) 1996-06-04
AU642004B2 (en) 1993-10-07
WO1991019044A1 (fr) 1991-12-12
AU7553891A (en) 1991-12-31
DK0612881T3 (da) 1997-07-14
EP0612882B1 (fr) 1998-10-21
FI925483A0 (fi) 1992-12-02
EP0532510A1 (fr) 1993-03-24
EP0553501B1 (fr) 1998-10-28
DE69105130T2 (de) 1995-03-23
JP3346736B2 (ja) 2002-11-18
DE69105130C5 (de) 2008-02-14
JPH11124784A (ja) 1999-05-11
JP3179752B2 (ja) 2001-06-25
FI119065B (fi) 2008-07-15
DE612882T1 (de) 1998-03-12
JP3655301B2 (ja) 2005-06-02
AU649570B2 (en) 1994-05-26
ES2107978T3 (es) 1998-12-16
NO974419L (no) 1993-02-05
ES2102711T3 (es) 1997-08-01
FI925483A (fi) 1992-12-02
NO940200L (no) 1993-02-05
AU2703092A (en) 1993-01-07

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