US 12,274,639 B2
Method of forming an ostomy pouch
Kevin Evans, Flintshire (GB); and Mark Jones, Flintshire (GB)
Assigned to CONVATEC LIMITED, Flintshire (GB)
Filed by ConvaTec Limited, Flintshire (GB)
Filed on May 28, 2024, as Appl. No. 18/675,925.
Application 18/675,925 is a continuation of application No. PCT/GB2022/053020, filed on Nov. 29, 2022.
Claims priority of application No. 2117252 (GB), filed on Nov. 30, 2021.
Prior Publication US 2024/0307212 A1, Sep. 19, 2024
Int. Cl. A61F 5/445 (2006.01); A61F 5/44 (2006.01); B32B 37/12 (2006.01)
CPC A61F 5/445 (2013.01) [A61F 5/4404 (2013.01); B32B 37/12 (2013.01); B32B 37/1207 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of forming an ostomy pouch; the method comprising:
providing a film to form a first cavity wall and a second cavity wall;
providing a comfort material to form a comfort layer; wherein the comfort material is a woven fabric material with a hot melt adhesive coating thereon;
joining the first cavity wall to the second cavity wall at a first temperature and a first pressure for a first time period; and subsequently joining a comfort layer to at least one of the first and second cavity walls at a second temperature and a second pressure for a second time period;
wherein the first temperature is less than the second temperature, the first pressure is about the same as that second pressure and the first time period is about equal to the second time period, thereby reducing the risk of damage to the comfort layer.