# US 7,743,795 B2 · Forming fabric having binding weft yarns > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,743,795 B2 - Document ID: US7743795B2 - Status: Granted - Kind: B2 - Application number: 11/615,611 - Filed: 2006-12-22 - Published: 2008-06-26 - Granted: 2010-06-29 - Earliest claimed: 2006-12-22 - Assignees: Voith Patent GmbH - Inventors: Scott Quigley - Web page: https://patentgrep.com/patent/US7743795B2 ## CPC - D21F 1/0045: {Triple layer fabrics} - D21F: PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON ## Abstract Forming fabric that includes a top layer having a plurality of top warp yarns woven with a plurality of top weft yarns. A bottom layer has a plurality of bottom warp yarns woven with a plurality of bottom weft yarns. A plurality of intrinsic binding yarns is utilized. At least one of the intrinsic binding yarns weaves with some of the top layer yarns and binds with one of the bottom layer yarns in each repeat. ## Claims ### Claim 1 A forming fabric comprising: a top layer comprising a plurality of top warp yarns woven with a plurality of top weft yarns; a bottom layer comprising a plurality of bottom warp yarns woven with a plurality of bottom weft yarns; a plurality of intrinsic binding yarns; and at least one of the intrinsic binding yarns being woven with some of the top layer yarns and binding with one of the bottom layer yarns in each repeat, wherein the top and bottom layers are bound only with single intrinsic and not paired binding yarns. ### Claim 2 (depends on 1) The fabric of claim 1, wherein the plurality of intrinsic binding yarns are binding weft yarns weaving to in the top layer with a different weave pattern than the plurality of top weft yarns. ### Claim 3 (depends on 1) The fabric of claim 1, wherein the plurality of intrinsic binding yarns are binding warp yarns weaving to in the top layer with a different weave pattern than the plurality of top warp yarns. ### Claim 4 (depends on 1) The fabric of claim 1, wherein the plurality of intrinsic binding yarns weave to in top layer with a different weave pattern than the plurality of top weft yarns and the plurality of top warp yarns. ### Claim 5 (depends on 1) The fabric of claim 1, wherein the forming fabric is a weft-stitched triple layer papermaker's fabric. ### Claim 6 (depends on 1) The fabric of claim 1, wherein the forming fabric is a warp-stitched triple layer papermaker's fabric. ### Claim 7 (depends on 1) The fabric of claim 1, wherein the top layer has a papermaking surface and the bottom has a machine side surface. ### Claim 8 (depends on 1) The fabric of claim 1, wherein the plurality of weft yarns in the top layer weave to the top layer warp yarns with a plain weave. ### Claim 9 (depends on 1) The fabric of claim 1, wherein each of the plurality of top warp yarns weaves to the top layer with a plain weave. ### Claim 10 (depends on 1) The fabric of claim 1, wherein the at least one of the intrinsic binding yarn binds with only one of the bottom layer yarns in each repeat. ### Claim 11 (depends on 1) The fabric of claim 1, wherein the at least one of the intrinsic binding yarn binds with only one of the plurality of the bottom layer warp yarns in each repeat. ### Claim 12 (depends on 1) The fabric of claim 1, wherein each intrinsic binding yarn binds with only one of the plurality of the bottom layer warp yarns in each repeat. ### Claim 13 (depends on 1) The fabric of claim 1, the plurality of top warp yarns and the plurality of bottom warp yarns are vertically stacked. ### Claim 14 (depends on 1) The fabric of claim 1, wherein the intrinsic binding yarns differ from the plurality of the top layer warp and weft yarns in at least one of the following characteristics: size; modulus; material. ### Claim 15 (depends on 1) The fabric of claim 1, wherein at least one of the plurality of top warp yarns differ from at least one of the plurality of bottom warp yarns in at least one of the following characteristics: size; modulus; material. ### Claim 16 (depends on 1) The fabric of claim 1, wherein the at least one of the plurality of top weft yarns differs from the at least one of the plurality of bottom weft yarns in at least one of the following characteristics: size; modulus; material. ### Claim 17 (depends on 1) The fabric of claim 1, wherein at least one of the plurality of top warp yarns is smaller in size than at least one of the plurality of bottom warp yarns. ### Claim 18 (depends on 1) The fabric of claim 1, wherein the top layer weft and warp yarns are woven with a plain weave and wherein the intrinsic binding yarns weave in the top layer with a textured weave pattern. ### Claim 19 (depends on 1) The fabric of claim 1, wherein the top layer weft and warp yarns are woven with a plain weave and wherein the intrinsic binding yarns are binding weft yarns which weave with top layer warp yarns with a textured weave pattern. ### Claim 20 (depends on 1) The fabric of claim 1, wherein the top layer weft and warp yarns are woven with a plain weave and wherein the intrinsic binding yarns are binding warp yarns which weave with top layer weft yarns with a textured weave pattern. ### Claim 21 (depends on 1) The fabric of claim 1, wherein the intrinsic binding yarns are structured and arranged to impart a disturbed and/or a textured surface onto paper by floating over crossing upper layer yarns with 2-over/2-under/3-over weave. ### Claim 22 (depends on 1) The fabric of claim 1, wherein the intrinsic binding yarns are structured and arranged to impart a disturbed and/or a textured surface onto paper by floating over crossing upper layer yarns with 3-over/1-under/3-over weave. ### Claim 23 (depends on 1) The fabric of claim 1, wherein the intrinsic binding yarns are structured and arranged to extend above a main paper side surface of the fabric so as to impart surface impressions into a surface of paper. ### Claim 24 (depends on 1) The fabric of claim 1, wherein every other pick is a single intrinsic binding yarn which weaves with some of the top layer yarns and binds with one of the bottom layer yarns in each repeat. ### Claim 25 A forming fabric comprising: a top layer comprising a plurality of top warp yarns woven with a plurality of top weft yarns; a bottom layer comprising a plurality of bottom warp yarns woven with a plurality of bottom weft yarns; a plurality of binding weft yarns; and at least one of the binding weft yarns being woven with some of the top layer yarns and binding with only one of the bottom layer yarns in each repeat, wherein the top and bottom layers are bound with single intrinsic and not paired binding yarns and not vertically stacked pairs of intrinsic binding yarns. ### Claim 26 (depends on 25) The fabric of claim 25, wherein the plurality of binding weft yarns are intrinsic binding weft yarns that weave to in the top layer with a different weave pattern than the plurality of top weft yarns. ### Claim 27 A forming fabric comprising: a top layer composed of a plurality of top warp yarns woven with a plurality of top weft yarns; and a bottom layer composed of a plurality of bottom warp yarns woven with a plurality of bottom weft yarns, wherein the top layer is bound to the bottom layer only with single alternating and not paired binding yarns which weave with some of the top layer yarns and bind with one of the bottom layer yarns in each repeat. ### Claim 28 (depends on 27) The fabric of claim 27, wherein the single binding yarns are single binding weft yarns which weave with some of the top layer warp yarns and bind with one of the bottom layer warp yarns in each repeat. ### Claim 29 (depends on 27) The fabric of claim 27, wherein the single binding yarns are intrinsic binding weft yarns which weave to in the top layer with a different weave pattern than the plurality of top weft yarns. ### Claim 30 (depends on 27) A method of making the fabric of claim 27, comprising: binding together the top and bottom layers with the single binding yarns. ### Claim 31 (depends on 1) A method of making the fabric of claim 1, comprising: weaving together the top and bottom layers with the at least one of the plurality of intrinsic binding yarns. ### Claim 32 (depends on 25) A method of making the fabric of claim 25, comprising: weaving together the top and bottom layers with the at least one of the plurality of binding weft yarns.