US 11,702,314 B2
Method and device for feeding elastic threads in a plant and process for the production of layered composite articles
Marco Viola, Valle Salimbene (IT); Andrea Viola, Valle Salimbene (IT); and Davide Viola, Valle Salimbene (IT)
Assigned to M.D. VIOLA MACCHINE S.R.L., Pavia (IT)
Appl. No. 17/293,394
Filed by M.D. VIOLA MACCHINE S.R.L., Pavia (IT)
PCT Filed Nov. 26, 2019, PCT No. PCT/IB2019/060160
§ 371(c)(1), (2) Date May 12, 2021,
PCT Pub. No. WO2020/121094, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 102018000011037 (IT), filed on Dec. 12, 2018.
Prior Publication US 2022/0009742 A1, Jan. 13, 2022
Int. Cl. B65H 59/38 (2006.01); A61F 13/15 (2006.01); B65H 49/18 (2006.01); B65H 51/30 (2006.01)
CPC B65H 59/388 (2013.01) [A61F 13/15593 (2013.01); B65H 49/18 (2013.01); B65H 51/30 (2013.01); B65H 2701/319 (2013.01); B65H 2701/38 (2013.01)] 14 Claims
OG exemplary drawing
 
1. Method for feeding elastic threads in a process for the production of layered composite articles, comprising:
feeding at least one elastic thread along a path extending from a reel of said elastic thread up to a joining zone with at least one web material;
wherein feeding said at least one elastic thread along said path comprises:
giving said at least one elastic thread a first percentage elongation along a first section of said path extending between the reel and a control zone;
giving said at least one elastic thread a second percentage elongation along a second section of said path extending between the control zone and the joining zone;
wherein the second percentage elongation is greater than the first percentage elongation and a length of the first section is greater than a length of the second section.