Abstract:
A packaging tube provided with an originality marking and a method for the production thereof. Normally the price of tubes increases according to the type of marking. This is avoided by virtue of the fact that weld joints, e.g. between the head and the tube are made visible and the joining materials are colored differently than the part of the tube that they connect.

Description:
[0001]     The invention concerns a packaging container, especially a packaging tube for pasty packaging materials with an anticounterfeiting feature according to preamble of claim  1  and a method to manufacture same according to the preamble of claim  6 .  
         [0002]     Next to metal tubes, packaging containers of plastic materials (plastic tubes) are widely accepted for packaging, advertising and promotion of technical, cosmetical and pharmaceutical packaging materials of pasty consistence. Due to their diffusion resistance metal tubes used to show for oxidation sensitive packaging materials superiority over plastic tubes. Due to the development of new plastics and laminates, for instance for the manufacture of sheet materials to be used for the manufacture of tube bodies by way of extrusion or by way of the so called side seaming the superiority of metal tubes was widely eliminated, so that metal- and plastic tubes are now considered equals as deformable or squeezable packaging means for oxidation sensitive packaging materials. As addition to the development of new plastics and laminates (tube materials) a highly developed manufacturing technique for plastic has to be considered assuring zero defects tubes. Tube materials and manufacturing techniques result in deformable tubes assuring a consistent quality of the packaging material starting with filling and emptying the tubes. The tubes besides their function as packaging container do next quality as a carrier of advertisement, whereby the displayed advertisement may include identification of the packaged material and other information relevant with respect to the origin thereof.  
         [0003]     The invention concerns a packaging container, especially a packaging tube for pasty packaging materials with an anticounterfeiting feature according to preamble of claim  1  and a method to manufacture same according to the preamble of claim  8 .  
         [0004]     Next to metal tubes, packaging containers of plastic materials (plastic tubes) are widely accepted for packaging, advertising and promotion of technical, cosmetical and pharmaceutical packaging materials of pasty consistence. Due to their diffusion resistance metal tubes used to show for oxidation sensitive packaging materials superiority over plastic tubes. Due to the development of new plastics and laminates, for instance for the manufacture of sheet materials to be used for the manufacture of tube bodies by way of extrusion or by way of the so called side seaming the superiority of metal tubes was widely eliminated, so that metal- and plastic tubes are now considered equals as deformable or squeezable packaging means for oxidation sensitive packaging materials. As addition to the development of new plastics and laminates (tube materials) a highly developed manufacturing technique for plastic has to be considered assuring zero defects tubes. Tube materials and manufacturing techniques result in deformable tubes assuring a consistent quality of the packaging material starting with filling and emptying the tubes. The tubes besides their function as packaging container do next quality as a carrier of advertisement, whereby the displayed advertisement may include identification of the packaged material and other information relevant with respect to the origin thereof. With respect to mass volume articles like tooth pastes the advertisement upon the tubes in its design specifically directed toward identification of origin and producer, so that consumer decide by way of an optical identification which product they are going buy from what manufacturer, expecting always repeatedly to acquire a product of same quality. With this expectation an optical identification will always be superficial which considering counterfeiting parties will result in problems for the manufacturer of the packaged material and/or the packer with respect to their warranties for origin, quality and consistence of quality. Counterfeitors are for example in a position to provide packaging tubes devoid of any defects in comparison of the originals, under provision here above is understood copying of a specific tube form and design carrying thereon the same imprints as the originals, whereby these counterfeit tubes usually contain packages materials of different quality as the quality offered by non counterfeiting manufacturer. In the event counterfeit products with respect to tubes and/or packaged materials should show quality defects the consumer, not being aware of having acquired a counterfeit product, will attribute the quality defects to the manufacture of original materials which will result for said manufacturer in problems with respect to origin, quality and guaranties of his products.  
         [0005]     In consideration of the above described background the inventors did define the object of the herein described invention to provide a packaging container preferable a packaging tube having an anticounterfeiting feature (following in short also feature) and a method to economically manufacture same, whereby a tube with this feature even superficially scrutinised visually presents itself as an original and this object is solved with respect to tube by way of the characterising features of claim  1  and for the method by way of the characterising features of claim  8 . Advantageous embodiments of the tube are characterised through the claims  2  to  7  and those of the method through the claims  9  to  12 .  
         [0006]     Two different techniques dominate the manufacture of plastic tubes. The ready made head technique teaches attachment of a ready made head to a tube body, employing as one mode of attachment so to say the melting head on to body by way of application of heat and pressure, while in the second mode head and body are attached to each other by way of an injection moulding process. The form on technique differs there from to the extent that the head and body are attached to each other during formation or moulding of a head in a matrix whereby the moulding of the occurs for one through shaping of a portion of plasticized material or in a second embodiment through injection moulding. Known is also a method which teaches the use of plasticized material portions to connect a prefabricated head with a tube body. The development of these methods did aim at two objectives namely for one to satisfy technical and as a second one appearance requirements. Professional circles strive for the manufacture of leak proof and mechanically strong seams which have to be however optically unobstructive. To provide for a tube with anticounterfeiting feature the invention departs from the teaching of the involved professional circles as set forth above maintaining the mechanical qualities of a seam between head and body however making the seam or parts thereof visible. According to the invention the head carries a feature of different colour as the head. It is preferred to form the feature as a ring encircling the or running around upon the shoulder of the head, which ring is formed and made visible during squeeze pressing of an annular portion of plasticized plastic material of a different colour as the colour of the head or the body to effect the attachment of the head to the body. Advantageously to manufacture tubes with a feature as set forth above a method is used employing for attachment a body to a head a portion of plasticized plastic material in form of a ring preferably of round or lenticular cross-section, the portion being positioned so that it abutts the inner surface of an annular section of the body and rests between or partially upon the outer circumference of the shoulder of the head, thereafter bending the freely extending annular section and squeeze pressing the portion by means of mandrel and matrix in direction of an outlet of the head. After termination of the squeeze pressing or squeeze forming step the annular feature joins the freely running round edge of the annular section so that the ring is positioned from the transition from shoulder to body corresponding to the length of the annular section. This has the advantage that the position of the feature upon the shoulder can be varied by way of varying the length of the annular section. This provides for the opportunity to change the visual appearance of the tube if so required or necessary and further by way of the position of the feature upon the shoulder manufacturing series of tubes can be identified.  
     
    
       [0007]     Further advantages, features and individual items of the invention can be taken from the following description of the tubes, the process and of an apparatus adapted to practise the process and the drawings, which drawings show:  
         [0008]      FIG. 1 A  tube according to the invention in its side view;  
         [0009]      FIG. 2 a  mandrel with head having a stepped arrangement;  
         [0010]      FIG. 3 a  mandrel with head and a multi-chamber stepped arrangement;  
         [0011]      FIG. 4 a  mandrel with head with the circumferential surface in an inclinded position;  
         [0012]      FIG. 5 a  matrix the pressing operation not having commenced yet;  
         [0013]      FIG. 6 a  matrix after the pressing operation has been performed. 
     
    
       [0014]      FIG. 1  shows the headside end of a packaging tube  10 , following called in short tube  10 . The tube  10  consists of a tube body  11 , following called body  11  and a tube head  12 , following called head  12  which head  12  is comected with the body  11  and carries a cap  13 . The head  12  comprises a shoulder  14  and an outlet  16  ( FIG. 2 ). The shoulder  14  carries on its outer visible surface, as opposed to its inner surface directed toward the hollow space of the body  11 , the anticounterfeiting identification  15  or antiocounuterfeiting feature  15  according to the invention. Depending upon the requirements of the diffusion resistance of tube  10  the body is made of a plastic monofoil, plastic laminate foil or a plastic/metal laminate foil which cut in strips are formed into a tubular body and welded together a long its longitudinal edges. Bodies  11  can also be extruded, in this case the welding operation is not necessary. The bodies  11  are at one of its open ends connected to prefabricated heads  12 . The heads  12  are made separately from the tubemanufacture by way of injection moulding. The head comprises a disk like shoulder  14  extending therefrom an outlet  16  which can be opened or closed by means of cap  13 .  
         [0015]     The outer diameter of shoulder  14  of head  12  is slightly smaller than the inner diameter of the body  11  and dimensioned in such a way that the material used for connecting body  11  and head  12  can during the squeeze forming operation can flow around the circular outer edge of shoulder  14  at the same time filling the gap in form of a ring between the circular edge of shoulder  14  and the inner surface of body  11 . Head  12  and body  11  are connected by means of material portion of plasticized plastic which plastic has to be selected so that it connects upon application of pressure and selectively heat with the plastic of head  12  and with the plastic of body  11 , in case of a laminate with the inner layer of plastic of body  11 .  
         [0016]      FIG. 2  shows in schematically a round mandrel  20  as part of a pressing die carrying upon its in longitudinal direction extending surface a tube body  11 . The upper free end of mandrel  20  is shaped (contoured) in such a way so that head  12  with its inner surface can be completely deposited thereon. The head  12  is formed by the disk like shoulder  14  extending therefrom the hollow cylindrical outlet  16  into which extends a centrically arranged mandrel extension  21  so that the head  12  is concentrically held on the contoured free end of mandrel  20 .  
         [0017]     According to  FIG. 2  an annular section  22  of body  11  in axial direction extends from the front face starting from the passage  23  between mandrel scope  24  and outer circumference of the mandrel. The axial extension of the annular section  22  is determined (see  FIG. 4 ) by the distance A within which the freely running round edge  26  of annular section  22 —seen from the center-line of head  12 —is to rest upon the outer surface of the head  12  thus forming the outer running round demarcation  27  of the anticounterfying feature  15  (following in short feature  15 ). The head shows according to  FIG. 2 a  stepped arrangement  29  upon its outer surface which arrangement  29  runs around the outer circumference of shoulder  14  having in direction of outlet  16  upward directed surface  30  forming the inner running round demarcation  28 .  
         [0018]     According to the invention it can be advantageous to provide the passage  24  between mandrel scope  24  and outer circumference of mandrel  20  with a multi-chamber stepped arrangement  31 . Advantageously the multi-chamber stepped arrangement  31  (following in short arrangement  15 ) comprises two chambers  32 ,  33  whereby the first chamber  32  originating from the outer circumference of mandrel  20  and in direction of center-line M structured as a slanted surface joins up with the second chamber  33  which chamber  33  ends in mandrel slope  24 . The diameter of the orifice closest to the center-line, that is to say the circumference of the second chamber is dimensioned in such a way that it is covered by the outer circumference of shoulder  14  of head  12 , so that the chamber  33  forms with a head  12  arranged on the mandrel  20  and the shoulder  14  of a head  12  an undercut  34  arranged on the front face of mandrel  20 , while seen in axial direction the first chamber  32  together with the inner circumferential surface of section  22  of body  11  and the outer surface of shoulder  14  forms an open annular room or space  35  extending in the same axial direction as mandrel  20 . As is shown in  FIG. 3  that way by way of the second chamber  33 , arranged under shoulder  14  and by way of annular room  35  adjoining the second chamber  33  a die cavity is provided into which the portion  17  of plastic material plasticized by way of heat and of different colour that the plastic material of the head  12  and if so desired the plastic material of the body  11  can be pressed.  
         [0019]      FIG. 4  depicts a circumferential surface arranged parallel to the center-line of head  12  (said parallel surface not shown) whereby the surface of that kind shown is arranged as a slope  36  in respect to the center-line.  
         [0020]      FIG. 2, 3  and  4  shown different mouldable connections between body  11  and head  12 . The connection according to  FIG. 2  satisfies normal average requirement, while the connection according to  FIG. 4  satisfies higher requirements to be full filled by a connection as for instance the one according to  FIG. 2 , since the slope  36  is a greater one sided connecting surface than parallely arranged surface according to  FIG. 2 . The connection between head  12  and body  11  according to  FIG. 3  is meant to meet very high requirements to be satisfied which connection combines by way of the undercut  34  the inner surface (surface directed to the inner room of the body) of head  12  with the surfaces of annular room  35 . The arrangement  29  upon the outer surface of shoulder  14  may also be used with head  12  according to  FIG. 3  and  4 . To use the material portion  17  as a ring is preferred, it is also preferred that the ring of circular, lenticular or drop like cross-section is prior to pressing attached to the inner surface of the annular section  22  covering the annular rooms  35 .  
         [0021]      FIG. 5  and  6  show the means to connect the body  11  to the head  12 . In  FIG. 5  reference numeral  39  depicts a ring shaped or annular matrix into which prior to commencement of the pressing operation a mandrel  20  is entered into carrying a body  11  and head  12  and a material portion  17 , whereby the end of the pressing operation is shown in  FIG. 6 . The matrix  39  (shown only in schematic form) can have an inner ring  40  spring biased and movable in the direction of movement of mandrel  20 , which ring serves as a hold down device for the head  12  upon mandrel  20  and which serves with its outer diameter as an axially movable moulding wall and resting upon the shoulder  14  will form for instance the inner running round demarcation  28 . The moulding contour of matrix  39  is being formed by a cylindrical section  41  and a radius formed section  42 . The inner diameter of cylindrical section  41  corresponds to the outer diameter of mandrel  20  with body  11  arranged thereon. The radius formed section  42  is dimensioned in such a way that is moulds the backward part of the annular section  22  as round or radius formed transition from body  11  to head  12  while its forward part during the pressing operation is brought into contact with the outer surface of the shoulder  14 .  
         [0022]     The method to connect a prefabricated head  12  with a body  11  by means of forming a ring like connection or seam upon the shoulder  14  of head  12  is operated essentially in six partial steps. The first partial step is loading mandrel  20  with a body  11  in such a way that an annular section  22  of body  11  extends beyond the transition  23  of mandrel slope  24  to outer circumference  25  of mandrel  20 . The axial dimension of annular section  22  depends upon the radial distance which the freely running round edge  26  of section  22 , which edge  26  forms the outer running round demarcation  28 , is designed to show after the pressing operation. Increasing the length of section  22  means that the position of the outer running round demarcation  28  moves up toward the outlet  16  while decreasing its length means the outer running round demarcation  28  would move down toward the transition  23  that means towards the outer circumference of mandrel slope  24 . In a second partial step a prefabricated head is arranged upon the mandrel whereby it is arranged thereon by way of the opening of outlet  16  and mandrel extension  21  and in that position the head  12  is being surrounded by the axially extended section  22 . In a third partial step the material portion  17  of connecting material is deposited upon the visible outer surface of shoulder  14 . It is preferred that the material portion  17  rests against the inner circumference or surface of the annular section  22  completely running around said surface. The material portion  17  consists of a plasticized plastic the composition of which is to be selected in such a way that it connects itself with upon application of pressure and if necessary heat with the plastic of the head  12  and that of the body  11  in case a laminate is used with the inner plastic layer of body  11 . The material portion  17  can be deposited into the die in prefabricated form or extruded upon shoulder  14  preferably covering the annular rooms  35 . Preferred a material portions  17  shaped ring like that means as closed rings and the cross-section thereof is preferable of circular, lenticular or drop like configuration. To form or establish the anticounterfeiting feature  15  upon the shoulder  14  the plastic material of portion  17  has a different colour which is significantly different from the colour of the plastic material of the head and if so desired from the colour of the body  11 . In a forth partial step head  12  and portion  17  enter into the open annular matrix  39 . In case there is provided an inner ring  40  the outer surface of the shoulder  14  gets into contact with the inner ring  40  and moves same during the entering movement of mandrel  20  into the matrix  39  against it&#39;s spring biased resistance. During a fifth partial step the pressing and forming of the feature  15  is effected. During this step by way of entering mandrel  20  into matrix  39  the material portion  17  is pressed into annular room  35 , stepped arrangement  29  and into the first  32  and second  33  chambers of multi-chamber stepped arrangement  31  connecting head  12  and body  11  at the same time bending the annular section  22  in direction of the outer surface of shoulder  14 . The pressing operation is finished when the inner surface of section  22  abutts or is in contact with the outer surface of shoulder  14 . During the bending operation part of the material potion  17  is being pressed and flowing by way of the annular section  22  in direction of the outlet  16  until the plastic squeezed over the surface of the shoulder  14  runs or flows against the upward directed surface  30  of the stepped arrangement  29  or flows against the outer circumference of inner ring  40 . In partial step  5  the connection of body  11  and head  12  is effected, the annular section  22  is by means of the plastic of portion  17  squeezed in direction of outlet  16  connected to the shoulder  14  and a ring formed feature  15  on shoulder  14  is formed in a distance encircling the outlet  16 , which feature is formed by an inner  28  and outer  27  demarcation circulating upon the outer surface of shoulder  14  means (upward directed surface  30 , inner ring  40 ) forming the inner encirculating demarcation  28  are preferred for a precise configuration of feature  15 , it is however possible to let the plastic material flowing in front of the freely running round edge  26  (forming the outer edge of the ring) to flow freely, that means without the means mentioned above over the outer surface of shoulder  14 . In a sixth partial step mandrel  20  with tube  10  is moved out of matrix  39 , tube  10  is ejected from mandrel  20  whereupon the method to manufacture a tube with feature  15  can be repeated.  
       BACKGROUND OF THE INVENTION  
       [0023]     The invention concerns a packaging container, especially a packaging tube for pasty packaging materials with an anticounterfeiting feature.  
         [0024]     Next to metal tubes, packaging containers of plastic materials (plastic tubes) are widely accepted for packaging, advertising and promotion of technical, cosmetical and pharmaceutical packaging materials of pasty consistence. Due to their diffusion resistance metal tubes used to show for oxidation sensitive packaging materials superiority over plastic tubes. Due to the development of new plastics and laminates, for instance for the manufacture of sheet materials to be used for the manufacture of tube bodies by way of extrusion or by way of the so called side seaming the superiority of metal tubes was widely eliminated, so that metal- and plastic tubes are now considered equals as deformable or squeezable packaging means for oxidation sensitive packaging materials. As addition to the development of new plastics and laminates (tube materials) a highly developed manufacturing technique for plastic has to be considered assuring zero defects tubes. Tube materials and manufacturing techniques result in deformable tubes assuring a consistent quality of the packaging material starting with filling and emptying the tubes. The tubes besides their function as packaging container do next quality as a carrier of advertisement, whereby the displayed advertisement may include identification of the packaged material and other information relevant with respect to the origin thereof. With respect to mass volume articles like tooth pastes the advertisement upon the tubes in its design specifically directed toward identification of origin and producer, so that consumer decide by way of an optical identification which product they are going buy from what manufacturer, expecting always repeatedly to acquire a product of same quality. With this expectation an optical identification will always be superficial which considering counterfeiting parties will result in problems for the manufacturer of the packaged material and/or the packer with respect to their warranties for origin, quality and consistence of quality. Counterfeitors are for example in a position to provide packaging tubes devoid of any defects in comparison of the originals, under provision here above is understood copying of a specific tube form and design carrying thereon the same imprints as the originals, whereby these counterfeit tubes usually contain packages materials of different quality as the quality offered by non counterfeiting manufacturer. In the event counterfeit products with respect to tubes and/or packaged materials should show quality defects the consumer, not being aware of having acquired a counterfeit product, will attribute the quality defects to the manufacture of original materials which will result for said manufacturer in problems with respect to origin, quality and guaranties of his products.  
         [0025]     In consideration of the above described background the inventors did define the object of the herein described invention to provide a packaging container preferable a packaging tube having an anticounterfeiting feature (following in short also feature) and a method to economically manufacture same, whereby a tube with this feature even superficially scrutinised visually presents itself as an original.  
       SUMMARY OF THE INVENTION  
       [0026]     The object is achieved by providing a packaging tube having anticounterfeiting feature for pasty packaging materials comprising a tube body made of a flexible plastic foil or of a flexible plastic/metal laminate foil with at one end arranges thereon a non-flexible prefabricated tube head of plastic material, comprising a shoulder and extending therefrom a closable outlet, whereby the shoulder is attached to the body by means of a material portion of plasticized and squeeze formed plastic material connecting an inner surface of one end of body with an outer circumference of the shoulder, characterised thereby that the shoulder carries an anticounterfeiting feature of a different colour as that of the shoulder.  
         [0027]     Two different techniques dominate the manufacture of plastic tubes. The ready made head technique teaches attachment of a ready made head to a tube body, employing as one mode of attachment so to say the melting head on to body by way of application of heat and pressure, while in the second mode head and body are attached to each other by way of an injection moulding process. The form on technique differs there from to the extent that the head and body are attached to each other during formation or moulding of a head in a matrix whereby the moulding of the occurs for one through shaping of a portion of plasticized material or in a second embodiment through injection moulding. Known is also a method which teaches the use of plasticized material portions to connect a prefabricated head with a tube body. The development of these methods did aim at two objectives namely for one to satisfy technical and as a second one appearance requirements. Professional circles strive for the manufacture of leak proof and mechanically strong seams which have to be however optically unobstructive. To provide for a tube with anticounterfeiting feature the invention departs from the teaching of the involved professional circles as set forth above maintaining the mechanical qualities of a seam between head and body however making the seam or parts thereof visible. According to the invention the head carries a feature of different colour as the head. It is preferred to form the feature as a ring encircling the or running around upon the shoulder of the head, which ring is formed and made visible during squeeze pressing of an annular portion of plasticized plastic material of a different colour as the colour of the head or the body to effect the attachment of the head to the body. Advantageously to manufacture tubes with a feature as set forth above a method is used employing for attachment a body to a head a portion of plasticized plastic material in form of a ring preferably of round or lenticular cross-section, the portion being positioned so that it abutts the inner surface of an annular section of the body and rests between or partially upon the outer circumference of the shoulder of the head, thereafter bending the freely extending annular section and squeeze pressing the portion by means of mandrel and matrix in direction of an outlet of the head. After termination of the squeeze pressing or squeeze forming step the annular feature joins the freely running round edge of the annular section so that the ring is positioned from the transition from shoulder to body corresponding to the length of the annular section. This has the advantage that the position of the feature upon the shoulder can be varied by way of varying the length of the annular section. This provides for the opportunity to change the visual appearance of the tube if so required or necessary and further by way of the position of the feature upon the shoulder manufacturing series of tubes can be identified.  
       BRIEF DESCRIPTION OF THE DRAWINGS  
       [0028]     Further advantages, features and individual items of the invention can be taken from the following description of the tubes, the process and of an apparatus adapted to practise the process and the drawings, which drawings show:  
         [0029]      FIG. 1 a  tube according to the invention in its side view;  
         [0030]      FIG. 2 a  mandrel with head having a stepped arrangement;  
         [0031]      FIG. 3 a  mandrel with head and a multi-chamber stepped arrangement;  
         [0032]      FIG. 4 a  mandrel with head with the circumferential surface in an inclinded position;  
         [0033]      FIG. 5 a  matrix the pressing operation not having commenced yet;  
         [0034]      FIG. 6 a  matrix after the pressing operation has been performed.  
       DETAILED DESCRIPTION  
       [0035]      FIG. 1  shows the headside end of a packaging tube  10 , following called in short tube  10 . The tube  10  consists of a tube body  11 , following called body  11  and a tube head  12 , following called head  12  which head  12  is comected with the body  11  and carries a cap  13 . The head  12  comprises a shoulder  14  and an outlet  16  ( FIG. 2 ). The shoulder  14  carries on its outer visible surface, as opposed to its inner surface directed toward the hollow space of the body  11 , the anticounterfeiting identification  15  or antiocounuterfeiting feature  15  according to the invention. Depending upon the requirements of the diffusion resistance of tube  10  the body is made of a plastic monofoil, plastic laminate foil or a plastic/metal laminate foil which cut in strips are formed into a tubular body and welded together a long its longitudinal edges. Bodies  11  can also be extruded, in this case the welding operation is not necessary. The bodies  11  are at one of its open ends connected to prefabricated heads  12 . The heads  12  are made separately from the tubemanufacture by way of injection moulding. The head comprises a disk like shoulder  14  extending therefrom an outlet  16  which can be opened or closed by means of cap  13 .  
         [0036]     The outer diameter of shoulder  14  of head  12  is slightly smaller than the inner diameter of the body  11  and dimensioned in such a way that the material used for connecting body  11  and head  12  can during the squeeze forming operation can flow around the circular outer edge of shoulder  14  at the same time filling the gap in form of a ring between the circular edge of shoulder  14  and the inner surface of body  11 . Head  12  and body  11  are connected by means of material portion of plasticized plastic which plastic has to be selected so that it connects upon application of pressure and selectively heat with the plastic of head  12  and with the plastic of body  11 , in case of a laminate with the inner layer of plastic of body  11 .  
         [0037]      FIG. 2  shows in schematically a round mandrel  20  as part of a pressing die carrying upon its in longitudinal direction extending surface a tube body  11 . The upper free end of mandrel  20  is shaped (contoured) in such a way so that head  12  with its inner surface can be completely deposited thereon. The head  12  is formed by the disk like shoulder  14  extending therefrom the hollow cylindrical outlet  16  into which extends a centrically arranged mandrel extension  21  so that the head  12  is concentrically held on the contoured free end of mandrel  20 .  
         [0038]     According to  FIG. 2  an annular section  22  of body  11  in axial direction extends from the front face starting from the passage  23  between mandrel scope  24  and outer circumference of the mandrel. The axial extension of the annular section  22  is determined (see  FIG. 4 ) by the distance A within which the freely running round edge  26  of annular section  22 —seen from the center-line of head  12 —is to rest upon the outer surface of the head  12  thus forming the outer running round demarcation  27  of the anticounterfying feature  15  (following in short feature  15 ). The head shows according to  FIG. 2 a  stepped arrangement  29  upon its outer surface which arrangement  29  runs around the outer circumference of shoulder  14  having in direction of outlet  16  upward directed surface  30  forming the inner running round demarcation  28 .  
         [0039]     According to the invention it can be advantageous to provide the passage  24  between mandrel scope  24  and outer circumference of mandrel  20  with a multi-chamber stepped arrangement  31 . Advantageously the multi-chamber stepped arrangement  31  (following in short arrangement  15 ) comprises two chambers  32 ,  33  whereby the first chamber  32  originating from the outer circumference of mandrel  20  and in direction of center-line M structured as a slanted surface joins up with the second chamber  33  which chamber  33  ends in mandrel slope  24 . The diameter of the orifice closest to the center-line, that is to say the circumference of the second chamber is dimensioned in such a way that it is covered by the outer circumference of shoulder  14  of head  12 , so that the chamber  33  forms with a head  12  arranged on the mandrel  20  and the shoulder  14  of a head  12  an undercut  34  arranged on the front face of mandrel  20 , while seen in axial direction the first chamber  32  together with the inner circumferential surface of section  22  of body  11  and the outer surface of shoulder  14  forms an open annular room or space  35  extending in the same axial direction as mandrel  20 . As is shown in  FIG. 3  that way by way of the second chamber  33 , arranged under shoulder  14  and by way of annular room  35  adjoining the second chamber  33  a die cavity is provided into which the portion  17  of plastic material plasticized by way of heat and of different colour that the plastic material of the head  12  and if so desired the plastic material of the body  11  can be pressed.  
         [0040]      FIG. 4  depicts a circumferential surface arranged parallel to the center-line of head  12  (said parallel surface not shown) whereby the surface of that kind shown is arranged as a slope  36  in respect to the center-line.  
         [0041]      FIG. 2, 3  and  4  shown different mouldable connections between body  11  and head  12 . The connection according to  FIG. 2  satisfies normal average requirement, while the connection according to  FIG. 4  satisfies higher requirements to be full filled by a connection as for instance the one according to  FIG. 2 , since the slope  36  is a greater one sided connecting surface than parallely arranged surface according to  FIG. 2 . The connection between head  12  and body  11  according to  FIG. 3  is meant to meet very high requirements to be satisfied which connection combines by way of the undercut  34  the inner surface (surface directed to the inner room of the body) of head  12  with the surfaces of annular room  35 . The arrangement  29  upon the outer surface of shoulder  14  may also be used with head  12  according to  FIG. 3  and  4 . To use the material portion  17  as a ring is preferred, it is also preferred that the ring of circular, lenticular or drop like cross-section is prior to pressing attached to the inner surface of the annular section  22  covering the annular rooms  35 .  
         [0042]      FIG. 5  and  6  show the means to connect the body  11  to the head  12 . In  FIG. 5  reference numeral  39  depicts a ring shaped or annular matrix into which prior to commencement of the pressing operation a mandrel  20  is entered into carrying a body  11  and head  12  and a material portion  17 , whereby the end of the pressing operation is shown in  FIG. 6 . The matrix  39  (shown only in schematic form) can have an inner ring  40  spring biased and movable in the direction of movement of mandrel  20 , which ring serves as a hold down device for the head  12  upon mandrel  20  and which serves with its outer diameter as an axially movable moulding wall and resting upon the shoulder  14  will form for instance the inner running round demarcation  28 . The moulding contour of matrix  39  is being formed by a cylindrical section  41  and a radius formed section  42 . The inner diameter of cylindrical section  41  corresponds to the outer diameter of mandrel  20  with body  11  arranged thereon. The radius formed section  42  is dimensioned in such a way that is moulds the backward part of the annular section  22  as round or radius formed transition from body  11  to head  12  while its forward part during the pressing operation is brought into contact with the outer surface of the shoulder  14 .  
         [0043]     The method to connect a prefabricated head  12  with a body  11  by means of forming a ring like connection or seam upon the shoulder  14  of head  12  is operated essentially in six partial steps. The first partial step is loading mandrel  20  with a body  11  in such a way that an annular section  22  of body  11  extends beyond the transition  23  of mandrel slope  24  to outer circumference  25  of mandrel  20 . The axial dimension of annular section  22  depends upon the radial distance which the freely running round edge  26  of section  22 , which edge  26  forms the outer running round demarcation  28 , is designed to show after the pressing operation. Increasing the length of section  22  means that the position of the outer running round demarcation  28  moves up toward the outlet  16  while decreasing its length means the outer running round demarcation  28  would move down toward the transition  23  that means towards the outer circumference of mandrel slope  24 . In a second partial step a prefabricated head is arranged upon the mandrel whereby it is arranged thereon by way of the opening of outlet  16  and mandrel extension  21  and in that position the head  12  is being surrounded by the axially extended section  22 . In a third partial step the material portion  17  of connecting material is deposited upon the visible outer surface of shoulder  14 . It is preferred that the material portion  17  rests against the inner circumference or surface of the annular section  22  completely running around said surface. The material portion  17  consists of a plasticized plastic the composition of which is to be selected in such a way that it connects itself with upon application of pressure and if necessary heat with the plastic of the head  12  and that of the body  11  in case a laminate is used with the inner plastic layer of body  11 . The material portion  17  can be deposited into the die in prefabricated form or extruded upon shoulder  14  preferably covering the annular rooms  35 . Preferred a material portions  17  shaped ring like that means as closed rings and the cross-section thereof is preferable of circular, lenticular or drop like configuration. To form or establish the anticounterfeiting feature  15  upon the shoulder  14  the plastic material of portion  17  has a different colour which is significantly different from the colour of the plastic material of the head and if so desired from the colour of the body  11 . In a forth partial step head  12  and portion  17  enter into the open annular matrix  39 . In case there is provided an inner ring  40  the outer surface of the shoulder  14  gets into contact with the inner ring  40  and moves same during the entering movement of mandrel  20  into the matrix  39  against it&#39;s spring biased resistance. During a fifth partial step the pressing and forming of the feature  15  is effected. During this step by way of entering mandrel  20  into matrix  39  the material portion  17  is pressed into annular room  35 , stepped arrangement  29  and into the first  32  and second  33  chambers of multi-chamber stepped arrangement  31  connecting head  12  and body  11  at the same time bending the annular section  22  in direction of the outer surface of shoulder  14 . The pressing operation is finished when the inner surface of section  22  abutts or is in contact with the outer surface of shoulder  14 . During the bending operation part of the material potion  17  is being pressed and flowing by way of the annular section  22  in direction of the outlet  16  until the plastic squeezed over the surface of the shoulder  14  runs or flows against the upward directed surface  30  of the stepped arrangement  29  or flows against the outer circumference of inner ring  40 . In partial step  5  the connection of body  11  and head  12  is effected, the annular section  22  is by means of the plastic of portion  17  squeezed in direction of outlet  16  connected to the shoulder  14  and a ring formed feature  15  on shoulder  14  is formed in a distance encircling the outlet  16 , which feature is formed by an inner  28  and outer  27  demarcation circulating upon the outer surface of shoulder  14  means (upward directed surface  30 , inner ring  40 ) forming the inner encirculating demarcation  28  are preferred for a precise configuration of feature  15 , it is however possible to let the plastic material flowing in front of the freely running round edge  26  (forming the outer edge of the ring) to flow freely, that means without the means mentioned above over the outer surface of shoulder  14 . In a sixth partial step mandrel  20  with tube  10  is moved out of matrix  39 , tube  10  is ejected from mandrel  20  whereupon the method to manufacture a tube with feature  15  can be repeated.