Receptacle, and Method and Device for Producing Receptacles

Abstract

The invention relates to a receptacle ( 10 ), in particular a flexible bag ( 10 ) made of paper, with a front part ( 20 ), a back part ( 30 ) and a bottom ( 50 ), which is closed by a bottom unit, and with an opening ( 1 ) lying opposite the bottom ( 50 ), wherein the bottom unit has a bottom portion ( 120 ) of the front part ( 20 ) and a bottom portion ( 130 ) of the back part ( 30 ), the bottom portion ( 130 ) of the back part ( 30 ) is shorter than the bottom portion ( 120 ) of the front part ( 20 ), such that the bottom portion ( 120 ) of the front part ( 20 ) is secured directly on the back part ( 30 ) by turning the bottom unit ( 100 ) back along a fold line ( 101 ), and the opening ( 1 ) is formed by a peripheral edge ( 2 ) which extends at a height of the front part ( 20 ) and of the back part ( 30 ) and which is at least partially frayed, thereby reducing the danger of injury at the edge ( 2 ).

What is claimed is: 
     
         1 . A method for producing receptacles ( 10 ) comprising flexible bags ( 10 ) made from paper, wherein the receptacle ( 10 ) is realized with a front part ( 20 ), a rear part ( 30 ), a bottom ( 50 ) which is closed by a bottom unit ( 100 ), as well as an opening ( 1 ) which is located opposite the bottom ( 50 ) and is defined by a peripheral edge ( 2 ), wherein the edge ( 2 ) is formed by a front part edge ( 23 ) of the front part ( 20 ) and a rear part edge ( 33 ) of the rear part ( 30 ), said method including the following steps:
 A) creating perforation lines ( 60 ,  70 ) on a material web ( 11 ) by means of a perforation device ( 81 )   B) forming a tube ( 12 ) from the material web ( 11 ) by means of a tube forming device ( 82 ),   C) separating off individual tube portions ( 13 ) and/or material portions ( 14 ) of tube portions ( 13 ) on the perforation lines ( 60 ,  70 ) by means of a separating device ( 82 ),   D) forming a bottom ( 50 ) on one end ( 13 A) of the tube portion ( 13 ), wherein in step A) the perforation device ( 81 ) forms a first perforation line ( 60 ) for creating the bottom ( 50 ) and a second perforation line ( 70 ), which is at a spacing from the first perforation line ( 60 ), for creating a frayed edge ( 2 ), wherein the front part edge ( 23 ) and the rear part edge ( 33 ) are at one height.   
     
     
         2 . The method as claimed in  claim 1 , characterized in that the first perforation line ( 60 ) comprises at least two regions ( 61 ,  62 ) which extend offset, at a spacing from and parallel to one another and/or in that the second perforation line ( 70 ) is realized as a geometric straight line. 
     
     
         3 . The method as claimed in  claim 1 , characterized in that the first region ( 61 ) of the first perforation line ( 60 ) is at a distance X to the adjacent second perforation line ( 70 ) which is approximately within the range of 1 mm≦X≦17 mm, in particular which is approximately within the range of 8 mm≦X≦11 mm. 
     
     
         4 . The method as claimed in  claim 1 , characterized in that the second region ( 62 ) of the first perforation line ( 60 ) is at a greater spacing Y to the adjacent second perforation line ( 70 ) than the spacing X which exists between the first region ( 61 ) of the first perforation line ( 60 ) and the adjacent second perforation line ( 70 ). 
     
     
         5 . The method as claimed in  claim 1 , characterized in that the steps A), B), C) and D) are carried out in a sequential manner. 
     
     
         6 . The method as claimed in  claim 1 , characterized in that the separating device ( 82 ) comprises a first separating station ( 82   a ) and a second separating station ( 82   b ), wherein in a step C 1 ) in the first separating station ( 82   a ) individual tube portions ( 13 ) are separated off along the first perforation line ( 60 ), and in a step C 2 ) in the second separating station ( 82   b ) material portions ( 14 ) of tube portions ( 13 ) are separated off along the second perforation line ( 70 ). 
     
     
         7 . The method as claimed in  claim 1 , characterized in that the steps C 1 ) and C 2 ) run during the step C) or in that the step C 1 ) runs during the step C) and the step C 2 ) runs after the step D). 
     
     
         8 . The method as claimed in  claim 1 , characterized in that during the step B) or after the step B) a handle opening ( 4 ) is punched in the front part ( 20 ) and the rear part ( 30 ), wherein in particular prior to or during the step A) or the step B) reinforcement strips ( 5 ) are attached in the region of the handle opening ( 4 ).