# US 2017/0283201 A1 · Method for adapting at least one winding parameter of a winding device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283201 A1 - Document ID: US20170283201A1 - Status: Published application - Kind: A1 - Application number: 15/626,620 - Filed: 2017-06-19 - Published: 2017-10-05 - Earliest claimed: 2014-12-19 - Assignees: Windmoller & Holscher - Inventors: Tim KIRCHHOFF; Frank HOFFMANN; Martin BACKMANN - Web page: https://patentgrep.com/patent/US20170283201A1 ## CPC - B65H 23/1888: {and controlling web tension} - B29C 55/06: parallel with the direction of feed - B65H 18/26: Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers - B65H 23/044: {Sensing web tension (B65H23/06, B65H23/18 take precedence)} - B65H 23/063: {and controlling web tension} - B65H 23/1806: {in reel-to-reel type web winding and unwinding mechanism, e.g. mechanism acting on web-roll spindle} - B65H 75/10: without flanges, e.g. cop tubes - B29C 53/56: Winding and joining, e.g. winding spirally {(winding in general B65H)} - B65H 2513/11: angular - B65H 2515/32: Torque e.g. braking torque - B65H 2553/21: Variable resistances, e.g. rheostats, potentiometers or strain gauges - B65H 2557/11: wireless - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) ## Abstract The invention relates to a method for adapting at least one winding parameter of a winding device during winding of a film web on a winding core, having the following steps:—conveying of the film web along a measuring path between a first driven roll and a second driven roll—increasing of the web tension of the film web between the first roll and the second roll—continuous detecting of the drive parameters of the first roll and of the second roll at least in the form of the torque and the circumferential speed,—determining of a stress-strain diagram from the detected drive parameters—adapting of at least one winding parameter of the winding device on the basis of the determined stress-strain diagram in order to achieve a defined elongation of the film web during winding on the winding core. ## Claims ### Claim 1 A method for adapting at least one winding parameter of a winding device during winding of a film web on a winding core, the method comprising: conveying of the film web along a measuring path between a first driven roll and a second driven roll; increasing of the web tension of the film web between the first roll and the second roll; continuous detecting of the drive parameters of the first roll and of the second roll at least in the form of the torque and the circumferential speed; determining of a stress-strain diagram from the detected drive parameters; adapting of at least one winding parameter of the winding device on the basis of the determined stress-strain diagram in order to achieve a defined elongation of the film web during winding on the winding core. ### Claim 2 (depends on 1) The method of claim 1, wherein the web tension is generated along the measuring path by accelerating the second roll and/or braking the first roll. ### Claim 3 (depends on 1) The method of claim 1, wherein the first roll and/or the second roll are at least one of the following drive rolls of the winding device or of a film producing machine: a cutting feed roll, a contact roll, a central drive roll, a stretching roll, and a support roll. ### Claim 4 (depends on 1) The method of claim 1, wherein at least one of the following winding parameters is at least one of web tension to the winding core, roll overfeed of winding device, and pressing forces of film web on winding core. ### Claim 5 (depends on 1) The method of claim 1, wherein the film web wraps around the first roll and/or the second roll at least during the performing of the method over an angle of more than about 90°, in particular between about 100° and 180°. ### Claim 6 (depends on 1) The method of claim 1, wherein the winding of the film web takes place at least during the detection of the drive parameters on a test core, which has a sensor device for detecting the winding pressure acting upon the test core, wherein the adaptation of the at least one winding parameter additionally considers an upper limit for the winding pressure. ### Claim 7 (depends on 6) The method of claim 6, wherein the winding pressure is used for compensation with a winding model, in order to use, verify and/or optimize this winding model for adapting the at least one winding parameter. ### Claim 8 (depends on 6) The method of claim 6, wherein the transmission of the detected winding pressure to a control unit is executed wirelessly according to at least one of the following standards: W-LAN (Wireless Local Area Network), Bluetooth, and NFC (Near Field Communication). ### Claim 9 (depends on 1) The method of claim 1, further comprising continuously cutting a measuring strip from the film web before reaching the first roll, and wherein the measuring strip passes through the measuring path. ### Claim 10 An optimization device for adapting at least one winding parameter of a winding device during winding of a film web on a winding core, having a first roll and a second roll for conveying the film web along a measuring path between these two rolls, further provided with a control unit for: increasing the web tension of the film web between the first roll and the second roll; continuous detecting of the drive parameters of the first roll and of the second roll, at least in the form of the torque and circumferential speed; determining of a stress-strain diagram from the detected drive parameters; and adapting of at least one winding parameter of the winding device on the basis of the determined stress-strain diagram in order to achieve a defined elongation of the film web during winding on the winding core. ### Claim 11 (depends on 10) The optimization device of claim 10, wherein the control unit is configured for: conveying of the film web along a measuring path between a first driven roll and a second driven roll; increasing of the web tension of the film web between the first roll and the second roll; continuous detecting of the drive parameters of the first roll and of the second roll at least in the form of the torque and the circumferential speed; determining of a stress-strain diagram from the detected drive parameters; adapting of at least one winding parameter of the winding device on the basis of the determined stress-strain diagram in order to achieve a defined elongation of the film web during winding on the winding core. ### Claim 12 (depends on 10) The optimization device of claim 10, wherein the wrapping angle of the first roll and/or the wrapping angle of the second roll is greater than 90°. ### Claim 13 (depends on 12) The optimization device of claim 12, wherein the wrapping angle of the first roll and/or the wrapping angle of the second roll is between about 100° and 180°. ### Claim 14 (depends on 10) The optimization device claim 10, wherein the wrapping angle of first roll at least corresponds to the wrapping angle of the second roll. ### Claim 15 (depends on 10) The optimization device of claim 10, further comprising a test core for winding the film web, wherein the test core comprises a sensor device for detecting the winding pressure acting upon the test core.