Molded non-woven fabrics and methods of molding

Details Molded non-woven fabrics and methods of molding Molded non-woven fabrics and methods of molding

A - Human Necessities

41

C

A41C 3/10 (2006.01) A41C 5/00 (2006.01) B29C 43/04 (2006.01) B29C 43/52 (2006.01) D04H 1/72 (2006.01)

Patent

CA 2525315

Methods of molding a non-woven fabric are provided. The methods include selecting a non-woven fabric having a web of randomly disbursed fibers, compressing the non-woven fabric between a top mold and a bottom mold, and maintaining the non-woven fabric between the top and bottom molds for a predetermined dwell time to define a molded depth and a molded diameter in the non-woven fabric. In some embodiments, the method includes exposing the non-woven fabric to mechanical agitation. In other embodiments, the method includes selecting the top and bottom molds to have a depth that is larger than the molded depth by about 30 to about 50 percent and a diameter that us larger than the molded diameter by less than about 10 percent.

Méthodes de moulage d'un tissu non tissé. Les méthodes consistent à sélectionner un tissu non tissé doté d'un voile de fibres aléatoirement distribuées, à comprimer le voile non tissé entre une moule supérieure et une moule inférieure, et à maintenir le tissu non tissé entre les moules supérieure et inférieure pendant un temps de maintien prédéterminé pour définir la profondeur moulée et un diamètre moulé dans le tissu non tissé. Dans certains modes de réalisation, la méthode consiste à sélectionner les moules supérieure et inférieure pour présenter une profondeur qui est supérieure d'environ 30 à 50 % à la profondeur moulée et un diamètre supérieur d'environ 10 % au diamètre moulé.

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