Multipart cover made of paper and method for producing a cover

Abstract

A multipart cover made of paper material and including a base body having a cover plate and a circumferential cover collar extending from the cover plate, wherein the cover collar, in a condition where same is placed onto a vessel to be closed, surrounds an upper rim of a vessel to be closed, and a reinforcement ring surrounds the cover collar at least sectionally on the radially exterior side of the cover collar. The cover collar includes at least one bead encircling the cover collar in the circumferential direction, and when viewed in the elevation direction the bead is disposed at a constant distance from the cover plate.

1 . A multipart cover made of paper material, comprising a base body which includes a cover plate and a circumferential cover collar extending from the cover plate, wherein the cover collar, in a condition placed onto a container to be closed, surrounds an upper rim of the container to be closed, and a reinforcement ring which surrounds the cover collar at least sectionally on the radially exterior side of the cover collar. 
     
     
         2 . The multipart cover according to  claim 1 , wherein the cover collar includes at least one bead encircling the cover collar in the circumferential direction, wherein viewed in the elevation direction the bead is disposed at a constant distance to the cover plate. 
     
     
         3 . The multipart cover made of paper material according to  claim 1 , wherein the bead extends radially inwards relative to a portion of the cover collar immediately adjacent to the cover plate. 
     
     
         4 . The multipart cover according to  claim 3 , wherein a portion between the bead and the cover plate is curved radially outwards, as viewed in cross section. 
     
     
         5 . The multipart cover according to  claim 4 , wherein a portion of the cover plate, immediately adjacent to the cover collar, is curved outwards as viewed in cross section and extends, starting from the transition between cover collar and cover plate, downwards towards the open side of the cover. 
     
     
         6 . The multipart cover according to  claim 1 , wherein in a downwards direction, in the direction towards the open side of the cover successive to the bead up to the lower rim of the cover, the cover collar is configured in the shape of a truncated cone. 
     
     
         7 . The multipart cover according to  claim 1 , wherein a portion of the reinforcement ring disposed above the cover bottom has an outer diameter that is smaller than an inner diameter of the cover collar below the bead and an inner diameter of the bead is smaller than the outer diameter of the reinforcement ring above the cover bottom. 
     
     
         8 . The multipart cover according to  claim 1 , wherein the reinforcement ring on an upper surface of the cover bottom is provided with a roll ring extending over the periphery of the cover and having an essentially circular cross section. 
     
     
         9 . The multipart cover according to  claim 8 , wherein the roll ring rests on the upper surface of the cover bottom. 
     
     
         10 . The multipart cover according to  claim 1 , wherein the reinforcement ring is provided with a peripheral skirt on an upper surface of the cover bottom. 
     
     
         11 . The multipart cover according to  claim 10 , wherein the skirt ( 56 ) is cylindrical. 
     
     
         12 . The multipart cover according to  claim 10 , wherein the skirt is in the shape of a truncated cone. 
     
     
         13 . The multipart cover made of paper material according to  claim 2 , wherein the bead extends radially outwards relative to a portion of the cover collar immediately adjacent to the cover plate. 
     
     
         14 . The multipart cover according to  claim 13 , wherein the reinforcement ring on an upper surface of the cover bottom is provided with a roll ring extending over the periphery of the cover and having an essentially circular cross section. 
     
     
         15 . The multipart cover according to  claim 13 , wherein the reinforcement ring on an upper surface of the cover bottom is provided with a peripheral skirt. 
     
     
         16 . The multipart cover according to  claim 13 , wherein the reinforcement ring rests planar against a periphery of the cover collar. 
     
     
         17 . The multipart cover according to  claim 16 , wherein the reinforcement ring has a bead extending radially outwards, and the radially exterior upper side thereof is a support surface for stacking another similar cover. 
     
     
         18 . The multipart cover according to  claim 17 , wherein a lower peripheral edge of the cover collar and/or of the reinforcement ring, in the stacked condition of two similar covers, rests on the support surface on the upper side of the bead. 
     
     
         19 . The multipart cover according to  claim 1 , wherein the reinforcement ring is connected to the cover collar by means of adhesive bonding or sealing above and below the bead extending along the periphery. 
     
     
         20 . The multipart cover according to  claim 1 , wherein the base body is configured in one piece and has an essentially constant material thickness. 
     
     
         21 . The multipart cover according to  claim 20 , wherein the base body is produced from a planar cut-out by means of folding the cover collar from the cover plate. 
     
     
         22 . A method for producing a multipart cover made of paper material, comprising the following steps:
 shaping a base body from a one-piece paper material cut-out, wherein the base body includes a cover plate and a circumferential cover collar extending from the cover plate, and wherein the cover collar is provided with a circumferential bead,   shaping a reinforcement ring, and   connecting the reinforcement ring to the base body such that the reinforcement ring surrounds the cover collar on the radially exterior side.