# US 2013/0240656 A1 · Winding glass ribbon by tensioning interleaving material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0240656 A1 - Document ID: US20130240656A1 - Status: Published application - Kind: A1 - Application number: 13/989,309 - Filed: 2011-11-29 - Published: 2013-09-19 - Earliest claimed: 2010-11-30 - Assignees: Corning Incorporated - Inventors: Gary Edward Merz; John Earl Tosch; Thaddeus Francis Trzeciak - Web page: https://patentgrep.com/patent/US20130240656A1 ## CPC - B32B 5/18: characterised by features of a layer {of} foamed material - B32B 7/06: permitting easy separation - B32B 17/10: of synthetic resin - B65H 18/08: Web-winding mechanisms - B65H 23/00: Registering, tensioning, smoothing or guiding webs (registering articles B65H9/00; in connection with splicing B65H21/00) - B65H 23/04: longitudinally - B65H 2301/414324: involving interleaf web/sheet, e.g. liner - B65H 2511/14: Diameter, e.g. of roll or package - B65H 2515/34: Pressure, e.g. fluid pressure - B65H 2801/61: Display device manufacture, e.g. liquid crystal displays - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES ## Abstract A method of winding a glass ribbon (10), including: winding an interleaving material (20) and the glass ribbon together to produce a roll (40); and tensioning the interleaving material so as to control a roll inter-layer pressure. By controlling the roll inter-layer pressure, the roll can be formed with straight side walls. The tension in the interleaving material can be controlled so as to be greater than 0 and ≦0.25 pounds per linear inch of width of interleaving material. Also, there is provided an apparatus for winding glass ribbon together with interleaving material into a roll. The apparatus includes: an interleaving material supply path; a glass ribbon supply path; a roll winding mechanism (46); and a means (26) for applying tension to interleaving material traveling along the interleaving material supply path, as the interleaving material is wound into roll (40), so as to produce a pressure between the layers of the roll. ## Claims ### Claim 1 (canceled) ### Claim 2 A method of winding a glass ribbon, comprising: winding an interleaving material and a glass ribbon together to produce a roll having a substantially constant inter-layer roll pressure. ### Claim 3 (depends on 2) The method of claim 2, wherein the roll inter-layer pressure is controlled by tensioning the interleaving material. ### Claim 4 (depends on 2) The method of any one of claim 2, wherein the winding further comprises winding the interleaving material onto a core for at least one wrap to form a nip of interleaving material, and inserting the glass ribbon into the nip. ### Claim 5 (depends on 2) The method of claim 2, wherein the tensioning is controlled so as to decrease tension as a function of increasing roll diameter. ### Claim 6 (depends on 2) The method of claim 2, further comprising unwinding the interleaving material from an interleaving roll, and wherein the tension is controlled so as to decrease as a function of decreasing interleaving-roll diameter. ### Claim 7 (canceled) ### Claim 8 (depends on 2) The method of claim 2, wherein the tensioning is controlled so as to produce an approximately constant roll inter-layer pressure between the interleaving material and the glass ribbon. ### Claim 9 (depends on 2) The method of claim 2, wherein the roll inter-layer pressure is ≦10 pounds per square inch, and is greater than 0 pounds per square inch. ### Claim 10 (canceled) ### Claim 11 (depends on 2) The method of claim 2, wherein the glass ribbon is ≦0.3 mm thick. ### Claim 12 (canceled) ### Claim 13 (depends on 2) The method of claim 2, wherein the interleaving material is a polyethylene foam sheet having a stiffness of ≦28.14 N/mm. ### Claim 14 (depends on 2) The method of claim 2, wherein the glass ribbon forms a free loop prior to being wound together with the interleaving material. ### Claim 15 (depends on 14) The method of claim 14, wherein the only tension pulling against the glass ribbon as it is wound together with the interleaving material is that produced by the free loop. ### Claim 16 (depends on 2) The method of claim 2, wherein the tension is applied to the interleaving material by a pneumatic break or servo motor coupled to the interleaving material. ### Claim 17 (depends on 2) The method of claim 2, wherein the tensioning is performed so as to produce a tension of ≦0.25 pounds per linear inch in the interleaving material as it is wound into the roll. ### Claim 18 (depends on 2) A method of manufacturing a glass article, comprising: forming a glass ribbon; and winding the glass ribbon according to any one of claim 2. ### Claim 19 (canceled) ### Claim 20 An apparatus for winding glass ribbon together with interleaving material into a roll, comprising: an interleaving material supply path; a glass ribbon supply path; a roll winding mechanism; and a means for applying tension to interleaving material traveling along the interleaving material supply path, as the interleaving material is wound into the roll, so as to produce a pressure between the layers of the roll. ### Claim 21 (depends on 20) The apparatus according to claim 20, wherein the means for applying tension is one of a pneumatic break and a servo motor coupled to the interleaving material. ### Claim 22 (canceled) ### Claim 23 (depends on 21) The apparatus according to claim 21, further comprising a measurement device positioned to measure the diameter of the roll, and further comprising a controller coupled to the measurement device and the means for applying tension, wherein the controller controls the means for applying tension so as to decrease the tension applied to the interleaving material as a function of increasing roll diameter. ### Claim 24 (canceled) ### Claim 25 (depends on 21) The apparatus according to claim 21, further comprising a measurement device positioned to measure a diameter of a roll from which the interleaving material is supplied along the interleaving material supply path, and further comprising a controller coupled to the measurement device and the means for applying tension, wherein the controller controls the means for applying tension so as to decrease the tension applied to the interleaving material as a function of decreasing interleaving-roll diameter. ### Claim 26 (depends on 20) The apparatus according to claim 20, wherein the means for applying tension applies an amount of tension of greater than zero and ≦0.25 pounds per linear inch.