Capsule for insertion into a head of a water pipe, machine of the tobacco processing industry and method for producing such a capsule

Abstract

A capsule for insertion into a head of a water pipe, a machine of the tobacco processing industry and a method for producing the capsule. The capsule for insertion into a head of a water pipe that includes a capsule body and a cover having at least one cover aperture. The capsule body and the cover, which are arranged to enclose a portion chamber configured to receive a single portion of water pipe tobacco, are joined directly to one another in a moisture-tight manner via a weld seam. The welded seam between the capsule body and cover is generated without auxiliary materials and provides a joint that is pressure-tight at least up to a pressure differential of 0.5 bar.

What is claimed: 
     
         1 . A capsule for insertion into a head of a water pipe, comprising:
 a capsule body;   a cover having at least one cover aperture;   the capsule body and the cover, which are arranged to enclose a portion chamber configured to receive a single portion of water pipe tobacco, are joined directly to one another in a moisture-tight manner via a weld seam;   wherein the welded seam between the capsule body and cover is generated without auxiliary materials, and provides a joint that is pressure-tight at least up to a pressure differential of 0.5 bar.   
     
     
         2 . The capsule as claimed in  claim 1 , wherein the welded seam is periodically structured. 
     
     
         3 . The capsule as claimed in  claim 2 , wherein the welded seam has a crosswise fluting, which exhibits a depth between 30 μm and 70 μm. 
     
     
         4 . The capsule as claimed in  claim 3 , wherein the crosswise fluting exhibits a depth between 40 μm and 60 μm. 
     
     
         5 . The capsule as claimed in  claim 1 , wherein the cover is a sieve and the at least one cover aperture comprises a plurality of cover apertures. 
     
     
         6 . The capsule as claimed in  claim 5 , wherein the capsule body comprises at least one body aperture. 
     
     
         7 . The capsule as claimed in  claim 1 , further comprising a manually removable seal arranged to seal the at least one cover aperture in at least one of a moisture-tight and/or a pressure-tight manner. 
     
     
         8 . The capsule as claimed in  claim 1 , wherein the capsule body has an outward projecting sealing edge pointing away from the portion chamber, and the welded seam extends along a periphery of the cover in an edge region adjacent to an outer edge of the cover; and 
     
     
         9 . The capsule as claimed in  claim 8 , wherein the sealing edge comprises an outwardly bent first layer and an oppositely directed inwardly bent second layer, the edge region of the cover is enclosed between the first layer and the second layer; and the first layer and the second layer of the capsule body are joined with the cover by the welded seam. 
     
     
         10 . A method for producing a capsule for insertion into a head of a water pipe, the capsule including a capsule body and a cover with at least one aperture being arranged to enclose a portion chamber configured to receive a single portion of water pipe tobacco, the method comprising:
 directly joining the cover and the capsule body with one another in a moisture-tight manner by a welded seam generated without auxiliary materials,   wherein the welded seam provides a joint between the cover and the capsule body that is pressure-tight at least up to a pressure differential of 0.5 bar.   
     
     
         11 . The method as claimed in  claim 10 , wherein the cover and the capsule body are joined with one another by an ultrasonic welding process. 
     
     
         12 . The method as claimed in  claim 11 , wherein a material thickness of at least one of the capsule body or the cover is between 50 μm and 200 μm, and
 wherein the ultrasonic welding process is carried out at least one of:
 at a contact pressure between 1200 N and 2000 N, 
 a welding time between 110 ms and 210 ms, 
 an amplitude of the ultrasonic oscillation between 24 μm and 36 μm, or 
 an ultrasonic frequency between 18 kHz and 22 kHz. 
 
 
     
     
         13 . The method as claimed in  claim 10 , wherein the cover and the capsule body are produced in a drawing method from a blank,
 wherein, in the drawing method, a drawing oil is applied to surfaces of the blank of the cover and of the blank of the capsule body, and,   wherein, prior to the joining of the capsule body with the cover, neither the cover nor the capsule body is cleaned of the drawing oil.   
     
     
         14 . The method as claimed in  claim 10 , wherein the at least one aperture of the cover is sealed in a moisture-tight manner with a manually removable seal. 
     
     
         15 . The method as claimed in  claim 10 , wherein the capsule body comprises an outwardly projecting sealing edge that points away from the portion chamber. 
     
     
         16 . The method as claimed in  claim 10 , further comprising:
 bending an edge of the capsule body outwards as a first layer of a sealing edge;   placing the cover on the first layer of the sealing edge;   bending the edge of the capsule inwardly and back over the cover as a second layer of the sealing edge, whereby an edge region of the cover is enclosed between the first layer and the second layer; and   joining the first layer and the second layer of the sealing edge with the cover via a welded seam extending along a periphery of the cover in the edge region of the cover.   
     
     
         17 . A capsule for insertion into a head of a water pipe produced according to the method of  claim 10 . 
     
     
         18 . A machine of the tobacco processing industry for producing the capsule as claimed in  claim 1 , the machine comprising:
 an ultrasonic welding apparatus with an anvil and a punch;   the anvil being configured to receive the capsule body; and   the punch, which is arranged opposite the anvil, being driven and movable to press against the cover, the sealing edge of the capsule body and the anvil at a predetermined contact pressure.   
     
     
         19 . The machine as claimed in  claim 18 , wherein the welded seam provides a joint between the cover and the capsule body that is pressure-tight at least up to a pressure differential of 0.5 bar.