US 12,447,065 B2
Method for winding preforms
Samuel Schuler, Basel (CH); and Marco Auer, Leibstadt (CH)
Assigned to Ruggli AG, Koblenz (CH)
Appl. No. 18/285,309
Filed by Ruggli AG, Koblenz (CH)
PCT Filed Apr. 8, 2022, PCT No. PCT/EP2022/059526
§ 371(c)(1), (2) Date Oct. 2, 2023,
PCT Pub. No. WO2022/223330, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 00426/21 (CH), filed on Apr. 21, 2021.
Prior Publication US 2024/0189157 A1, Jun. 13, 2024
Int. Cl. A61F 13/20 (2006.01); A61F 13/15 (2006.01)
CPC A61F 13/2094 (2013.01) [A61F 13/15666 (2013.01); A61F 13/15699 (2013.01); A61F 13/15764 (2013.01); A61F 13/15804 (2013.01); A61F 13/206 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for winding preforms for manufacturing tampons, comprising the steps:
a. feeding a material tape;
b. separating tape-shaped material strips from the material tape;
wherein
a material strip is pushed into a continuously conveying winding unit by means of at least one drive roller in such a way that the material strip is positioned between a winding fork and a guide bar in such a way that when the winding fork moves around the guide bar, the latter pushes a section of the material strip into a fork gap.