PROCÉDÉ ET APPAREIL POUR FORMER DES VOIES D'AÉRATION DANS DES ADHÉSIFS SENSIBLES À LA PRESSION POUR EMPILEMENTS DE STRATIFIÉ

摘要

Methods and apparatus to form venting pathways in pressure sensitive adhesives for laminate stacks are disclosed. An example method includes forming a laminate stack including a gas permeable nonwoven layer and a pressure sensitive adhesive layer, a surface of the pressure sensitive adhesive layer facing a surface of the gas permeable nonwoven layer, and processing the laminate stack such that a plurality of venting pathways are formed in the pressure sensitive adhesive layer to enable trapped gas to pass through the pressure sensitive adhesive layer.