公开(公告)号：US11655572B2

公开(公告)日：2023-05-23

申请号：US16690276

申请日：2019-11-21

申请人： The Procter & Gamble Company

发明人： Rong Deng ,  Aleksey M. Pinyayev ,  Valerie J. Henderson ,  Craig A. Powell

IPC分类号： B29C35/08 ,  B29C61/04 ,  B32B38/00 ,  B32B3/26 ,  D04H1/558 ,  A61F13/537 ,  B32B5/26 ,  D04H1/485

CPC分类号： D04H1/558 ,  A61F13/53708 ,  B29C61/04 ,  B32B3/266 ,  B32B5/26 ,  B32B38/0036 ,  D04H1/485 ,  B29C2035/0822 ,  B32B2038/0088

摘要： Aspects of the present disclosure relate to methods and apparatuses for relofting nonwoven substrates. During the relofting process, a substrate is directed to advance in a first direction such that a length of the substrate is in a facing relationship with a radiation source. The advancing substrate is relofted by irradiating the length of the substrate with infrared radiation from the infrared radiation source. The substrate comprises a first caliper upstream of the radiation source and the substrate comprises a second caliper downstream of the radiation source greater than the first caliper. The substrate may also be redirected around an axis to advance the substrate in a second direction, wherein the second direction is different than the first direction. The axis may be selectively movable between a first position and a second position to selectively subject the substrate to infrared radiation and remove the substrate from the infrared radiation.