Device and method for feeding material webs to a processing device

Abstract

A delivery device for feeding planar material webs, for example airlaids, wetlaids, non-wovens, or films/foils, to a processing installation is proposed, said delivery device having a splicing unit and a multiple-web unwinding device. The splicing unit is configured for connecting a fibrous-web end of a preceding individual fibrous web to a fibrous-web lead of a subsequent individual fibrous web, so as to in this way feed a non-interrupted fibrous web to the processing installation. The splicing unit is moreover configured for processing airlaid fibrous webs that are wound on winding cores and are thus made up as roll goods. The multiple-web unwinding device has at least two winding-core mounts that are capable of being loaded in a mutually independent manner. Each of the winding-core mounts may receive a plurality of comparatively narrow rolls having narrower individual fibrous webs, or alternatively also a comparatively wider roll having a wider multiple fibrous web that is perforated in the unwinding direction. By virtue of the perforation, the wider multiple fibrous web may be detached so as to form a plurality of individual fibrous webs by severing along the perforation, such that as a result narrow fibrous webs may likewise be fed to the splicing unit, as is possible in the case of correspondingly narrow rolls having narrower individual fibrous webs.

1 . A delivery device for feeding planar material webs to a processing installation, characterized in that the delivery device has a splicing unit for connecting a material-web end of a preceding individual material web to a material-web lead of a subsequent individual material web, so as to feed a non-interrupted material web to the processing installation, wherein the splicing unit is configured for processing material webs that are wound on winding cores and are thus made up as rolls, and wherein the delivery device has a multiple-web unwinding device having at least two winding-core mounts that are capable of being loaded in a mutually independent manner and that each may receive a plurality of comparatively narrow rolls having narrower individual material webs or a comparatively wider roll having a wider multiple material web that is perforated in the unwinding direction, wherein the wider multiple material web may be detached so as to form a plurality of individual material webs by severing along the perforation. 
     
     
         2 . The delivery device as claimed in  claim 1 , characterized in that the delivery device has more than two winding-core mounts and one material-web accumulator that is assigned to each winding-core mount. 
     
     
         3 . The delivery device as claimed in  claim 2 , characterized in that the multiple-web unwinding device has a total of four winding-core mounts that are capable of being loaded in a mutually independent manner. 
     
     
         4 . The delivery device as claimed in  claim 3 , characterized in that the winding-core mounts are in each case disposed in pairs so as to be mutually aligned and so as to be mutually opposite in a parallel manner. 
     
     
         5 . The delivery device as claimed in  claim 3 , characterized in that the splicing unit is disposed so as to be approximately centric between all four winding-core mounts. 
     
     
         6 . The delivery device as claimed in  claim 1 , characterized in that the multiple-web unwinding device has a plurality of tension rollers which are disposed such that the latter hold a respective individual material web to be unwound so as to be tensioned by a defined force. 
     
     
         7 . The delivery device as claimed in  claim 6 , characterized in that the tension rollers are a composite part of a material-web accumulator, wherein one dedicated material-web accumulator is assigned to each winding-core mount. 
     
     
         8 . A method for feeding material webs to a processing installation, the method being characterized in that
 on at least two winding-core mounts in each case a plurality of material webs that are wound on winding cores and thus are made up as rolls are provided either in the form of in each case a plurality of comparatively narrow rolls having narrower individual material webs, or in the form of a comparatively wider roll having a wider multiple material web that is perforated in the unwinding direction, wherein the wider multiple material web is capable of being detached by severing along the perforation into a plurality of individual material webs; and   that individual material webs are alternatingly unwound from one or the other winding-core mount, and a respective material web end of a preceding individual material web is connected to a material web lead of a subsequent individual material web by splicing such that a non-interrupted material web is fed to the processing installation.