INDUSTRIAL FABRIC, METHOD FOR PRODUCING A NONWOVEN, AND USE OF AN INDUSTRIAL FABRIC

The invention relates to an industrial fabric (30, 40, 45), in particular for transporting a nonwoven web while producing same, having a product side (PS), which is in contact with the nonwoven, and a machine side (MS), which is in contact with transport devices of a system (1) for producing the non...

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Bibliographische Detailangaben
Hauptverfasser: KUCKART, DIETER, DEBYSER, PASCAL, MONNERIE, JEAN-LOUIS
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The invention relates to an industrial fabric (30, 40, 45), in particular for transporting a nonwoven web while producing same, having a product side (PS), which is in contact with the nonwoven, and a machine side (MS), which is in contact with transport devices of a system (1) for producing the nonwoven. The fabric (30, 40, 45) has MD threads (32, 33, 43, 44, 48, 50), which run in the running direction of the nonwoven web, and CMD threads (31, 41, 42, 52), which run perpendicularly to the MD threads, said threads being woven together. At least two layers of MD threads (32, 33, 43, 44, 48, 50) are provided which are stacked one over the other in pairs and form product MD threads (32, 43, 50) and non-product MD threads (33, 44, 48). At least the material of each product MD thread (32, 43, 50) facing the product side (PS) forms a contact angle, measured according to the Wilhelmy plate method, of at least 80°, preferably at least 90°, more preferably at least 100°. In order to prevent the adhesion of threads to the fabric (30, 40, 45) and in order to reduce the air permeability, the fabric has a single layer of CMD threads (31, 41, 42, 52), and the cross-section of each product MD thread (32, 43, 50) has at least two regions, a first region of which consists of the first material and a second region of which consists of the second material. A substantial proportion, preferably a predominant proportion, of a tensile force acting on each product MD thread (32, 43, 50) can be transmitted from the second region, and the cross-section of the product MD threads (32, 43, 50) have a second region in the form of a core (61) and a first region in the form of a casing (62) which surrounds the core (61). The product MD threads (32, 43, 50) are preferably coextruded or are extruded in two successive steps. The MD threads (32, 33, 43, 44, 48, 50) have a flattened cross-section, preferably a rectangular cross-section, wherein a ratio of the height of the cross-section to the width of the cross-section preferably ranges from 1 : 1.2 to 1 : 10, preferably from 1 : 1.5 to 1 : 4. The invention further relates to a method for producing a nonwoven and to the use of an industrial fabric (30, 40, 45). L'invention concerne un tissu industriel (30, 40, 45), destiné en particulier à transporter une bande d'un non-tissé pendant la fabrication de ce dernier. Le tissu possède un côté produit (PS), qui est en contact avec le non-tissé, et un côté machine (MS), qui est en contact avec les