Modularly Constructed Paper Machine Covering

Abstract

A covering for paper machines, paperboard machines or tissue machines, which is constructed from a construction kit includes a plurality of prefabricated web-shaped material layers. Each web-shaped material layer is configured dependent upon a category and operating conditions of the covering, and the plurality of prefabricated web-shaped material layers are stacked atop one another and are joined to one another at least in sections, two-dimensionally, and in a manner that prevents the plurality of prefabricated web-shaped material layers from being detached. The invention also relates to a method for producing the inventive covering.

1 - 36 . (canceled)  
   
   
       37 . A method for the modular production of coverings of different categories for use in one of paper machines, paperboard machines and tissue machines, said method comprising the steps of: 
 prefabricating a construction kit of web-shaped material layers;    selecting a plurality of said web-shaped material layers from said construction kit depending on a category and operating condition of the covering to be produced;    stacking said web-shaped material layers atop one another; and    joining said web-shaped material layers to one another at least in sections, two-dimensionally, and in a manner that prevents said web-shaped material layers from being detached.    
   
   
       38 . The method according to  claim 37 , wherein said stacking of said web-shaped material layers comprises stacking them in an order which depends on the category and the operating conditions of the covering.  
   
   
       39 . The method according to  claim 37 , wherein said joining of said web-shaped material layers comprises joining at least two web-shaped material layers together chemically.  
   
   
       40 . The method according to  claim 39 , wherein said joining at least two web-shaped material layers together chemically is effected by an interface-active bond.  
   
   
       41 . The method according to  claim 40 , wherein said interface-active bond is effected by one of vulcanizing, welding and melting.  
   
   
       42 . The method according to  claim 39 , wherein said joining at least two web-shaped material layers together chemically is effected by adding a bonding medium.  
   
   
       43 . The method according to  claim 42 , wherein said bonding medium is an adhesive.  
   
   
       44 . The method according to  claim 42 , wherein said bonding medium forms a material layer which is arranged between said joined material layers.  
   
   
       45 . The method according to  claim 44 , wherein said bonding medium forms a foamed material layer between said joined material layers.  
   
   
       46 . The method according to  claim 37 , wherein said joining of said web-shaped material layers comprises joining at least two web-shaped material layers together mechanically.  
   
   
       47 . The method according to  claim 46 , wherein said joining at least two web-shaped material layers together mechanically is effected by pressing.  
   
   
       48 . The method according to  claim 37 , wherein said joining of said web-shaped material layers comprises joining at least two web-shaped material layers together by a textile joining method.  
   
   
       49 . The method according to  claim 48 , wherein said textile joining method is effected by one of sewing and pinning.  
   
   
       50 . A covering for use in one of paper machines, paperboard machines and tissue machines, said covering comprising: 
 a construction kit including a plurality of prefabricated web-shaped material layers, each said web-shaped material layer being configured dependent upon a category and operating conditions of the covering, said plurality of prefabricated web-shaped material layers being stacked atop one another and joined to one another at least in sections, two-dimensionally, and in a manner that prevents said plurality of prefabricated web-shaped material layers from being detached.    
   
   
       51 . The covering according to  claim 50 , wherein said web-shaped material layers have a stacking order that is dependent upon the category and the operating conditions of the covering.  
   
   
       52 . The covering according to  claim 50 , wherein said web-shaped material layers fulfill specific functions.  
   
   
       53 . The covering according to  claim 50 , wherein said web-shaped material layers are joined to one another in sections via a bonding medium that fulfills specific functions one of on its own and in combination with at least one of said material layers.  
   
   
       54 . The covering according to  claim 50 , wherein the construction kit of prefabricated web-shaped material layers comprises at least one material layer influencing the surface of a fibrous web and at least one wear-stable material layer.  
   
   
       55 . The covering according to  claim 54 , wherein said material layer influencing the surface of a fibrous web is one of a textile areal structure and a non-textile areal structure.  
   
   
       56 . The covering according to  claim 54 , wherein said wear-stable material layer is one of a textile areal structure and a non-textile areal structure.  
   
   
       57 . The covering according to  claim 50 , wherein the construction kit of prefabricated web-shaped material layers comprises at least one dimension-stable material layer.  
   
   
       58 . The covering according to  claim 57 , wherein said dimension-stable material layer is one of a textile areal structure and a non-textile areal structure.  
   
   
       59 . The covering according to  claim 50 , wherein said construction kit of prefabricated web-shaped material layers comprises at least one material layer influencing the liquid adsorption capacity.  
   
   
       60 . The covering according to  claim 59 , wherein said material layer influencing the liquid adsorption capacity has one of a high liquid adsorption capacity and a low liquid adsorption capacity.  
   
   
       61 . The covering according to  claim 60 , wherein said material layer with a high liquid adsorption capacity is one of a textile areal structure and a non-textile areal structure.  
   
   
       62 . The covering according to  claim 50 , wherein said construction kit of prefabricated web-shaped material layers comprises at least one anti-rewetting material layer.  
   
   
       63 . The covering according to  claim 62 , wherein said anti-rewetting material layer is one of a textile areal structure and a non-textile areal structure.  
   
   
       64 . The covering according to  claim 50 , wherein said textile areal structure is one of a weave structure, a fleece, a thread plaiting, and a warp knitting.  
   
   
       65 . The covering according to  claim 50 , wherein said non-textile areal structure is one of: 
 at least one of a structured film and a penetrated film;    at least one of a structured membrane and a penetrated membrane; and    a foamed layer.    
   
   
       66 . The covering according to  claim 65 , wherein said film is at least one of extruded and rolled.  
   
   
       67 . The covering according to  claim 65 , wherein said foamed layer has a defined pore size.  
   
   
       68 . The covering according to  claim 65 , wherein said foamed layer has a plurality of defined pore sizes.  
   
   
       69 . The covering according to  claim 68 , wherein said foamed layer has a defined pore size in a transverse profile.  
   
   
       70 . The covering according to  claim 50 , wherein said web-shaped material layers are joined to one another with at least one of a chemical and a mechanical bond.  
   
   
       71 . The covering according to  claim 70 , wherein said web-shaped material layers are joined to one another by different bonding methods depending on the category, the operating conditions, and the material layers to be joined together.  
   
   
       72 . The covering according to  claim 71 , wherein said web-shaped material layers are mutually offset in one of a machine direction and a transverse machine direction and joined together, two-dimensionally, in sections so that the covering forms two end areas which complement each other in form and function and can be joined together.