Adhesive dispensing nozzles for producing partial spray...

B - Operations – Transporting – 05 – D

Patent

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Details

B05D 1/26 (2006.01) B05C 5/02 (2006.01) B05C 5/04 (2006.01)

Patent

CA 2247786

A system and method for applying fluids, including fiberized hot melt adhesive, onto a substrate from one or more meltblowing die assemblies mounted on a manifold that supplies fluid thereto. At least one of the die assemblies is selected from a group of die assemblies having different configurations of fluid dispensing orifices, wherein various combinations of the different die assembly configurations are mountable onto the manifold to provide a wide range of partial fluid dispensing patterns onto the substrate. Each of the plurality of fluid dispensing orifices are flanked by an air dispensing orifice disposed on opposing sides thereof, wherein air dispensing orifices may extend across a portion of the remaining portion of the meltblowing die assembly void of fluid dispensing orifices. At least one of the die assemblies having air dispensing orifices arranged relative to the fluid dispensing orifices to increasingly decrease an oscillation amplitude of fluid dispensed from the fluid dispensing orifices approaching an endmost fluid dispensing orifice thereof.

Méthode et système d'application de fluides, notamment d'un adhésif thermofusible défibré sur un substrat, provenant d'un ou de plusieurs assemblages de matrice de soufflage de produits fondus montés sur une tubulure d'alimentation en fluide. Au moins un assemblage de matrice est choisi à même un groupe d'assemblages présentant différentes configurations d'orifices de dispersion du fluide; différentes combinaisons de configurations variées d'assemblages de matrice peuvent être fixées sur la tubulure d'alimentation afin d'offrir une vaste gamme de formes de dispersion partielle du fluide sur le substrat. Chacun des nombreux orifices de dispersion du fluide est accompagné d'un orifice de distribution d'air logé sur les cotés opposés; ces orifices de distribution d'air peuvent s'avancer à travers une partie de la section restante de l'assemblage de matrice de soufflage de produit fondu qui ne comprend pas les orifices de dispersion de fluide. La position d'au moins un des assemblages de matrice comprenant des orifices de distribution d'air est choisie en regard des orifices de dispersion de fluide afin de faire diminuer progressivement l'amplitude de l'oscillation du fluide dispersé par les orifices de distribution en se rapprochant du dernier orifice de distribution.

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