A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 15/42 (2006.01) A61F 13/02 (2006.01) D04H 1/56 (2006.01) D04H 3/16 (2006.01) D04H 13/00 (2006.01)
Patent
CA 2318821
There is provided pressure-sensitive adhesive coated breathable nonwoven tape backing substrate where the nonwoven tape backing comprises a fibrous nonwoven web formed in part by multicomponent fibers having an adhesive component region. The multicomponent fibers are distributed throughout the width dimension of the nonwoven tape backing such that adhesive component region is exposed on both outer faces of the nonwoven tape backing. The adhesive component region is preferably a pressure-sensitive adhesive region formed by hot melt coextrusion of at least two components to form the multicomponent fibers. A pressure-sensitive adhesive tape layer is coated onto at least one face of the nonwoven tape backing which pressure-sensitive adhesive tape layer is preferably of the same type of adhesive as that forming the adhesive region of the multicomponent fiber or is at least compatible with the adhesive region of the multicomponent fiber such that the adhesive has enhanced adhesive properties to the pressure-sensitive adhesive tape layer.
L'invention concerne un substrat de renfort non tissé imper-respirant recouvert d'un adhésif autocollant pour bande adhésive, ce renfort non tissé étant constitué d'une toile non tissée fibreuse formée en partie de fibres à composants multiples comprenant une zone de composant adhésif. Les fibres à composants multiples sont réparties sur toute la largeur du renfort non tissé pour bande adhésive, de sorte que la zone de composant adhésif soit exposée sur les deux surfaces extérieures du renfort non tissé. La zone de composant adhésif est, de préférence, une zone adhésive autocollante formée par coextrusion par fusion d'au moins deux composants de façon à former lesdites fibres à composants multiples. On recouvre au moins une surface du renfort non tissé avec une couche de bande adhésive autocollante, cette couche de bande adhésive autocollante étant de préférence du même type d'adhésif que celle qui forme la zone adhésive de la fibre à composants multiples, ou alors, au moins compatible avec la zone adhésive de la fibre à composants multiples, de sorte que cet adhésif ait un plus grand pouvoir d'adhésion à la couche de bande adhésive autocollante.
Joseph Eugene G.
Stickels Steven C.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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