METHOD AND APPARATUS FOR PRODUCING LAMINATED ARTICLES

In the invention, a method is provided for producing a composite nonwoven fabric. A polymer is extruded into heated continuous filaments, possibly elastic, from the die head to a first chilled roller, wherein the extruder is configured to provide the continuous filaments to the chilled roller in a c...

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Bibliographische Detailangaben
Hauptverfasser: MORRIS, MARION, C, BREWER, JOHN, A, DOBBINS, LESLIE, D, FITTS, JR., JAMES, R, COOK, MICHAEL, C, WILLITTS, DONALD, V, WIDEMAN, RONALD, H, MLEZIVA, MARK, M, MAY, RAYMOND, J, MORELL, CHARLES, J, WELCH, HOWARD, M, BOGGS, LAVADA, CAMPBELL, SALTER, KENNETH, M
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:In the invention, a method is provided for producing a composite nonwoven fabric. A polymer is extruded into heated continuous filaments, possibly elastic, from the die head to a first chilled roller, wherein the extruder is configured to provide the continuous filaments to the chilled roller in a canted direction that is at a tangent or angle to the surface of the first chilled roller. The filaments are conveyed in a downward direction by way of chilled rollers to a nip. In a next step, the nonwoven web is sprayed with an adhesive and is laminated on the continuous filaments in the nip to form a composite nonwoven fabric. The continuous filaments move vertically downward approximately in line with the lamination process, facilitating automatic re-threading of filaments when they are broken or interrupted in their travel downward onto the chilled rolls. In the invention, a method is provided for producing a composite nonwoven fabric. A polymer is extruded into heated continuous filaments, possibly elastic, from the die head to a first chilled roller, wherein the extruder is configured to provide the continuous filaments to the chilled roller in a canted direction that is at a tangent or angle to the surface of the first chilled roller. The filaments are conveyed in a downward direction by way of chilled rollers to a nip. In a next step, the nonwoven web is sprayed with an adhesive and is laminated on the continuous filaments in the nip to form a composite nonwoven fabric. The continuous filaments move vertically downward approximately in line with the lamination process, facilitating automatic re-threading of filaments when they are broken or interrupted in their travel downward onto the chilled rolls. L'invention concerne un procédé permettant de produire un tissu non tissé composite. Un polymère est extrudé de façon à obtenir des filaments continus chauffés, éventuellement élastiques, depuis la tête d'extrudeuse jusqu'à un premier rouleau coulé en coquille, l'extrudeuse étant conçue pour alimenter le rouleau coulé en coquille en filaments continus dans une direction légèrement inclinée suivant une tangente ou un angle par rapport à la surface du premier rouleau coulé en coquille. Ces filaments sont transportés en direction descendante dans une partie resserrée au moyen de rouleaux coulés en coquille. Dans une prochaine étape, la toile non tissée est vaporisée à l'aide d'un adhésif et laminée sur les filaments continus situés dans la partie resserrée de f