US 12,433,797 B2
Elastic entrapment with waist cap bonding
Jeffrey W. Fritz, Plymouth, WI (US); and David E. Schuette, Kiel, WI (US)
Assigned to Curt G. Joa, Inc., Sheboygan Falls, WI (US)
Filed by Curt G. Joa, Inc.
Filed on Jul. 24, 2020, as Appl. No. 16/947,236.
Claims priority of provisional application 62/895,645, filed on Sep. 4, 2019.
Prior Publication US 2021/0059866 A1, Mar. 4, 2021
Int. Cl. A61F 13/15 (2006.01); A61F 13/49 (2006.01); B32B 5/02 (2006.01)
CPC A61F 13/15577 (2013.01) [A61F 13/4902 (2013.01); B32B 5/022 (2013.01); A61F 2013/49025 (2013.01); B32B 2555/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of forming an elastic composite structure comprising:
providing a first web layer comprising a first portion, a second portion, and a third portion;
threading a plurality of elastic threads adjacently to the second and third portions of the first web layer;
folding the first portion of the first web layer over the second portion of the first web layer;
upon folding the first portion of the first web layer over the second portion of the first web layer, providing a second web layer over the first web layer;
simultaneously bonding the folded first portion of the first web layer to the second portion of the first web layer and the third portion of the first web layer to the second web layer;
wherein a first portion of the plurality of elastic threads is trapped between the first and second portions of the first web layer absent adhesive;
wherein a second portion of the plurality of elastic threads is trapped between the third portion of the first web layer and the second web layer;
wherein the second web layer completely covers the second portion of the plurality of elastic threads and not the first portion of the plurality of elastic threads;
wherein the folded first portion of the first web layer is bonded to the second portion of the first web layer around each of the first portion of the plurality of elastic threads; and
wherein the third portion of the first web layer is bonded to the second web layer around each of the second portion of the plurality of elastic threads.