# US 2014/0150305 A1 · Method and apparatus for conveying and treating a web > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150305 A1 - Document ID: US20140150305A1 - Status: Published application - Kind: A1 - Application number: 14/093,168 - Filed: 2013-11-29 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Reifenhaeuser GmbH & Co. KG Maschinenfabrik - Inventors: Detlef Frey; Peter Schlag; Hans-Georg Geus; Claudio Cinquemani - Web page: https://patentgrep.com/patent/US20140150305A1 ## CPC - D06C 15/02: between co-operating press or calender rolls - D04H 3/14: with bonds between thermoplastic yarns or filaments produced by welding - D06C: FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS - D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B) ## Abstract A method of conveying and treating a web, wherein the web is first conveyed over a transport surface and then over a rotating transfer roller at the end of the transport surface. The web is transferred from the transfer roller to a treatment roller at a spacing from the transfer roller. The conveying of the web is performed with the proviso and particularly a spacing a between the transfer roller and the treatment roller is set such that the web wraps around the treatment roller over a wrap angle α from 15° to 90°. ## Claims ### Claim 1 A method of conveying and treating a web made of fibers, comprising the steps of: first conveying the web on a transport surface and then over a rotating transfer roller at a downstream end of the transport surface, transferring the web from the transfer roller to a rotating treatment roller at a spacing from the transfer roller in the travel direction of the web, setting a speed of the conveying of the web and a spacing of the treatment roller from the transfer roller such that the web wraps around the transfer roller over a wrap angle of 15° to 90°. ### Claim 2 (depends on 1) The method as set forth in claim 1, wherein the web is a nonwoven or a spunbond textile made of continuous filaments. ### Claim 3 (depends on 1) The method as set forth in claim 1, wherein the web passes over the upper side of the transfer roller and over the upper side of the treatment roller and the upper side of the transfer roller and the upper side of the treatment roller are either at the same height or at substantially the same height or have a height difference that is a maximum of 20% of the diameter of the transfer roller. ### Claim 4 (depends on 1) The method as set forth in claim 1, wherein the treatment roller is a lower treatment roller and the web is passed through a gap or nip between the lower treatment roller and upper treatment roller above it. ### Claim 5 (depends on 4) The method as set forth in claim 4, wherein the lower and the upper treatment roller are two calender rollers, at least one calender roller being heated and the web being compacted by on passage between the two calender rollers. ### Claim 6 (depends on 1) The method as set forth in claim 1, wherein the web is conveyed such that the spacing a between the transfer roller and the treatment roller is set such that the web wraps around the treatment roller over a wrap angle β of 15° to 60°. ### Claim 7 (depends on 1) The method as set forth in claim 1, wherein the web is conveyed such that the spacing a between the transfer roller and the treatment roller is set such that the web wraps around the transfer roller over a wrap angle α of 40 to 90°. ### Claim 8 (depends on 1) The method as set forth in claim 1, wherein the spacing a between the transfer roller and the treatment roller is set such that it is greater than 4% and less than 20% of the diameter of the transfer roller. ### Claim 9 An apparatus for conveying and treating a web made of fibers, the apparatus comprising: a transport surface for the planar conveying of the web to a rotating transfer roller at the end of the transport surface; at least one rotating treatment roller for receiving the web from the transfer roller and in the travel direction of the web downstream n of the transfer roller at a spacing a from the transfer roller, the spacing a between the transfer roller and the treatment roller being such that the conveyed web wraps around the transfer roller over a wrap angle α of over 15°. ### Claim 10 (depends on 9) The apparatus as set forth in claim 9, wherein the transport surface is formed by a continuously circulating deposition mesh belt. ### Claim 11 (depends on 10) The apparatus as set forth in claim 10, wherein the transfer roller is a deflecting roller for the continuously circulating deposition mesh belt. ### Claim 12 (depends on 9, 10, 11) The apparatus as set forth in any one of claims 9 to 11, wherein a diameter of the treatment roller or calender roller, particularly the diameter of the two treatment rollers or calender rollers one on top of the other, is greater than the diameter of the transfer roller and preferably at least 1.5 times, preferably at least 2 times the diameter of the transfer roller. ### Claim 13 A method of operating an apparatus for conveying and treating a web made of fibers, the apparatus comprising: a support surface moving and extending in a horizontal travel direction and passing at a downstream end over a transfer roller; and a rotating treatment roller positioned downstream in the direction at a spacing from the transfer roller, whereby the web is transported downstream on the surface, passes over the transport roller, passes through the spacing to the treatment roller, engages the treatment roller, and is pulled off the transfer roller and conveyed away by the treatment roller, the method comprising the step of conveying the web on the support surface and setting the spacing between the transfer roller and the treatment roller such that the web wraps around the transfer roller over a wrap angle of 15° to 90°.