Abstract:
A dispenser for substances includes an outer shell with a deformable outer wall which encloses the deformable container arrangement and also comprising at least one balancing valve for balancing air, wherein an air filled interspace is provided between the outer wall and the container arrangement and substances are dispensed once the outer shell has been subjected to pressure, and wherein the container arrangement has at least two containers for the separate storage of liquid for pasty substances. For long term storage of the substances in particular an outlet portion of the container arrangement has a diffusion seal made from metal which is pierced and opened by the dispensing head using points just before the dispenser is being used.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    The invention relates to a dispenser with the features of the preamble of claim  1 . 
         [0002]    Substances like for example cosmetics, hair dyes but also glues or other chemicals are stored in containers which are provided with a dispensing device. As known from example from DE 692 08 264 in the form of a squeezing bottle with a one way bag included therein. These so called dispensers facilitate dispensing a defined amount of the substance and prevent simultaneously that air enters the containers. Furthermore these dispensers facilitate dispensing the substances without having to open screw tops or similar. It is a disadvantage of conventional dispensers that they typically include a pump mechanism which dispenses the substances from the only container through the dispenser so that complexity of the configuration is rather high in particular because two component dispensers are increasing required for cosmetics or hair care products. 
         [0003]    In addition to the known dispensers also collapsible tubes are bottles are used for storing the substances recited supra wherein the collapsible tubes or bottles have dosing heads or dosing openings from which the substance exits after a direct pressure loading of the container. It is a disadvantage of these containers that no complete emptying of the substance of the container is performed, thus residual amounts of the substances remain which are typically expensive. Furthermore air can enter the interior of the container through the output opening which can lead to oxidation or spoiling of the substance. In order to address the problem and in order to prevent that air enters the container including the substance so called bag in bottle or bag in bag packaging is proposed. This includes an outer container, for example a plastic bottle made from a rather firm material or a collapsible tube in which a second container filled with the substance typically a blown bag is arranged. Dispensers of this type are typically used in the pharmaceutical industry or aerosoles and are produced by a so called coextrusion method. Thus between the outer container and the bag enclosed by the outer container an intermediary space is provided which is filled with air when the outer packaging is pressure loaded it is compressed and transfers the pressure to the bag through the air included in the intermediary space. The substance then exits from the intermediary space through a respective output valve. Thus air can flow in in order to place the volume of the dispensed substance. 
         [0004]    It is a disadvantage of the recited types of packaging that the typically coextruded inner containers are not diffusion tight and are thus less suitable for long term storage. Furthermore only a single substance can be received in the respective container. When substances have to be stored which only may be mixed during dispensing or shortly after dispensing since a premature reaction would occur otherwise no solution is provided so far. This is the case for example for multicomponent glues or particular cleaners or cosmetic products. 
         [0005]    Thus it is an object of the invention to provide a dispenser which is simple in configuration and easily fillable and which additionally facilitates long term storage of two or more substances. 
       SUMMARY OF THE INVENTION 
       [0006]    The dispenser according to the invention for substances is suited for storing and dispensing chemicals like components of multicomponent glues or of dyes but also for cosmetics or pasty or liquid substances. The dispenser thus includes an outer shell with a deformable outer wall and a container arrangement that is enclosed by the outer wall and also deformable. The deformability of the outer wall is thus adjusted so that the outer wall is deformable by simple pressure loading with one hand or plural fingers, thus however the wall has enough strength to provide stable support for the dispenser. When loading the outer shell with pressure which can also be provided a respective clamps or brackets it is provided that the substances stored in the interior container arrangement exit from the interior container arrangement. This is facilitated in that an air filled intermediary space is provided between the outer wall and the container arrangement and the pressure in parted upon the outer shell is evenly transmitted to the two or more containers of the container arrangement. In order to provide a filling of the intermediary space after putting out the stored substances the outer shell includes at least one inlet valve for balancing air. Through this balancing valve a corresponding amount of air flows into the intermediary space between the deformable outer wall of the outer shell and the container arrangement enclosed by the outer shell. The proposed dispenser for substances is characterized in that the container arrangement includes at least two container for separate storage of liquid or pasty substances. This configuration of the dispenser facilitates separate storage of substances in a single dispenser. Thus this dispenser facilitates for example that a two or multi component glue is stored in a single container but it also facilitates storage of particularly sensitive cosmetics like e.g. hair dyes which may only be mixed when exiting from the storage container in order to maintain for example their caring properties. 
         [0007]    In order to increase storage time it is furthermore proposed that the exit portion of the containers includes at least substantial diffusion sealing, in particular made from metal, advantageously a respective aluminum cap or sleeve which is only penetrated or opened by the dispensing head, in particular by spikes provided thereon when the dispenser is being used. Thus the entire bag content is protected against incoming air, wherein opening the seal is provided advantageously by moving the dispensing head from a start or storage position into the operating position through interlocking. 
         [0008]    In an advantageously embodiment it is provided that the substances stored in the container have identical or similar viscosities. Depending on the embodiment of the respective mixing device which can be additionally provided at the dispenser there is the option to keep the put out substance substantially constant. When in addition to a large amount of a first substance only a small amount of a second substance for example of a hardener shall be dispensed this can be adjusted by different cross sections of the dispensing openings. Through this dispenser a complicated storage of the substances to be mixed in separate containers is prevented. Additionally the dispenser can provide that a constant mixing ratio of the substances is always being dispensed. In addition to arranging two containers there is also the option to arrange more than two containers, for example for a three component glue in the dispenser. 
         [0009]    It is perceived advantageous when the outer shell is made from a thermoplastic material using PE (polyethylene), PP (polypropylene) or PET (polyethylenterephthalat). The inner containers are advantageously made from a metal foil or a laminated multilayer foil, a so called barrier foil, wherein containers fabricated with sealing seams can be produced in a particularly cost effective manner and diffusion tight. Depending on the reactive properties of the stored substances a metal coating of the plastic material can be additionally provided. A respective coating is also advantageous for keeping the product fresh since this coating can find an antibacterial effect. 
         [0010]    It is advantageous to form the container as a cost effective foil bag with 2, 3 or also 4 sealing seams per container bag. Thus the two or more bags can be combined into a multi chamber bag through adjacent seal grooves. Thus also a separate storage of the substances is possible, e.g. during inserting into the outer shell by hand or machine is substantially simplified. The dispenser with inserted and filled bags is thus actuated as follows. The relatively resilient outer wall of the outer shell is squeezed together by hand or with a clamp. Thus a positive pressure e.g. 0.5 bar is created in an interior of the dispenser wherein the pressure directly impacts the bags arranged at this location and thus completely evenly. Based on the air filled intermediary space enveloping the containers an even loading of both bags is provided so that both bags respectively dispense an identical amount of a substance or of plural substances for identical outlet cross sections wherein the amount is independent from the force of pressure loading the outer shell. 
         [0011]    An advantageous embodiment provides that the dispenser is provided as a disposable container. A dispenser of this type is discarded after retrieving the entire substance stored therein. Thus the containers and the outer wall can be connected in at least one portion, in particular connected pressure tight through corresponding seal lips. For connecting purposes certainly also a subsequent welding of the containers and the outer wall can be provided. This prevents that the containers collapse in the housing after partial emptying so that a complete retrieval of the substances from the containers is not possible anymore. Through the connection between the container and the outer wall at least in a portion the containers remain aligned in the dispenser until they are emptied completely. This is also achieved when a tube is welded into each container wherein a free end of the tube is used for connecting with the common dispensing head and by each container having a check valve or filling valve for liquids. 
         [0012]    For simplified retrieval and mixing the substances as required it is advantageous to provide an applicator that is connected with the outer shell. The containers are thus connected with the applicator through channels or conduits. The applicator can include for example two dispensing openings that are arranged adjacent to each other or accordingly two or more annular gaps that are arranged concentrical wherein the substances are separately put out through the concentric annular gaps and mix only when exiting from the applicator. 
         [0013]    Is furthermore advantageous that the dispenser can be configured as a reusable container thus it includes replaceable or refillable containers in its interior. In order to be able to retrieve the empty containers or in order to be able to perform a refill the dispenser includes a removable dispensing head. The dispensing head is configured in particular as a screw top or as a plug in top or connected with the outer shell through a respective snap locking connection. Besides a removable closure or a dispensing head there is also the option that the outer shell for example in the base portion includes a flap or a cover thus permitting access to the containers arranged in the interior. The closure provided at the dispenser is advantageously also configured as an applicator and thus offers the advantages described supra. 
         [0014]    As a compensation for the retrieved amount of substance air flows in the dispenser into the intermediary space between the outer wall and the container. In order to facilitate a quick refill of the intermediary space with exterior air the inlet valve is configured as a valve that is arranged in the outer wall or in the closure. For a valve in particular an arrangement of a so called ball valve or needle valve is suitable. The valve is opened by a vacuum that is provided in the container after substance removal or the valve is advantageously opened by gravity in that the dispenser is placed upright again from the preferred upside down position while being used. The valve can be integrally formed when shaping the dispensing head, in particular as a cage for guiding a small ball. This configuration is an invention in itself since it provides plural functions. Thus a ball valve or needle valve of this type provides long term storage without intensive pressure variations (e.g. from temperature changes) in an open position of the dispenser and thus in an open position of the valve so that also a transportation on aircraft is facilitated. When filling the containers compressed air can be provided to the balancing valve in order to press the foil bags flat before filling them with the substance, thus evacuate them. In the operating position (overhead position) the gravity actuated ball together with a sealing seat facilitates safe sealing and thus simple pressure loading. 
         [0015]    Furthermore the base portion of the outer wall can have a rounded shape so that the dispenser is stored upside down or lying flat wherein leakage is prevented. Thus, the dispenser cannot be put upside down which also prevents unintentional run out. Thus a so called ball valve is useable as a venting valve. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]    Further advantages features and details of the invention can be derived from the subsequent description of advantageous embodiments of the invention with reference to drawing figures, wherein: 
           [0017]      FIGS. 1 a , 1 b  and 1 c    illustrate schematic representations of a dispenser according to the invention in a perspective view and into longitudinal sectional views that are offset by 90°; 
           [0018]      FIGS. 2 a , 2 b , 2 c , 2 d , 2 e  and 2 f    illustrate several views of a dispensing head provided at the dispenser; 
           [0019]      FIGS. 3 a  and 3 b    illustrate two views of an oval outer shell of the dispenser; 
           [0020]      FIGS. 4 a , 4 b , 4 c  and 4 d    illustrate a plural views of an unfilled container that is configured as a bag; 
           [0021]      FIGS. 5 a  and 5 b    illustrate a dispenser in an advantageous upside down operating position; 
           [0022]      FIGS. 6 a , 6 b , 6 c  and 6 d    illustrate a plural views of an advantageous applicator; 
           [0023]      FIGS. 7 a  and 7 b    illustrate a schematic view of an advantageous dispenser into longitudinal sectional views (offset relative to each other by 90°); 
           [0024]      FIGS. 8 a , 8 b  and 8 c    illustrate a plural views of an inner component (so called enveloping sleeve) of the dispensing head and two perspective views of the outer shell which is arranged below the dispensing head; 
           [0025]      FIGS. 9 a  and 9 b    illustrate a dispenser in upside down position as an advantageous operating position; 
           [0026]      FIG. 10  illustrates an exploded view of the dispenser in the filling position; and 
           [0027]      FIGS. 11 a  and 11 b    illustrate an embodiment similar to the embodiment in  FIGS. 7 a    and  7   b.    
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0028]      FIGS. 1 a -1 c    illustrate an embodiment of the dispenser  10  according to the invention which includes two container  11   a, b . The containers  11   a, b  are thus arranged in an outer shell  13  of the dispenser  10  wherein the exterior shell is made from a deformable material, for example PE, PP or PET. The outer wall  12  of the outer shell  13  is configured easily deformable, in particular provided in an oval shape so that it is easily apprehensible by a human hand. Since the dispenser  10  is stored in a stand up position as illustrated in  FIG. 1  the deformability of the outer wall  12  is selected so that the outer shell  13  facilitates a safe standing storage of the dispenser. The containers  11   a, b  arranged in an interior of the outer shell  13  are also made from a deformable material wherein the material thickness however can be very thin, in particular the material can be a foil. Between the containers  11   a, b  and the outer wall  12  of the outer shell  13  there is an intermediary space  14  which is filled with exterior air through a balancing valve  23  that is described infra (c.f.  FIGS. 1 a -1 c   ), right sectional view. The dispenser  10  also includes a screw top  10 ′ which covers the dispenser  10  (herein with an applicator  2 , c.f.  FIGS. 6 a -6 d   ) and the ventilation hole of the balancing valve  23  dust proof in order to prevent contamination during extended storage. 
         [0029]    In the left sectional view (centrally through the narrow side of the dispenser) the filled containers  11   a, b  are visible which adjoin the dispensing head  15  together with their dispensing openings  18   a, b  and with their filling valves  19 , in particular for liquids. The dispenser  10  illustrated herein is a disposable container, wherein the containers  11   a, b  are not replaceable. In order to apply the cover  10 ′ a thread  16  is provided herein (c.f.  FIGS. 2 a -2 f   ). The output openings  18   a, b  for the stored substances in the embodiment are configured as spouts and thus provide a separate output of the substance stored in the containers  11   a, b  so that mixing can only be performed subsequently in the outlet from the applicator  24  or while being let out from the applicator  24 . When the outer shell  13  and the dispensing head  15  are configured reusable the containers  11   a, b  can be removed after removing the dispensing head from the outer shell  13  (c.f. interlocking connection  15   a / 13   a  in  FIGS. 2 a   - 2   f,    3   a  and  3   b ) and the containers can be replaced with “new containers  11   a, b ”. The dispensing head  15  or the applicator  24  (c.f.  FIGS. 6 a -6 d   ) includes mandrel shaped protrusions  20  at a lower end (c.f.  FIGS. 6 a -6 d   ) wherein the mandrel shaped protrusions are inserted above the filling valves  19  and press the filling valves into an open position by snap locking the dispensing head that is reapplied to outer shell  13 . 
         [0030]    The balancing valve  23  illustrated in the right sectional view is embodied as a ball valve and facilitates air access in the position of  FIGS. 1 a   - 1   c,  but prevents letting out air in the overhead operating position (c.f.  FIGS. 5 a  and 5 b   ). In addition to an embodiment as gravity actuated ball valve as illustrated in  FIGS. 1 a   - 1 ,  5   a  and  5   b  there is also the option to provide the balancing valve as a needle valve. 
         [0031]      FIGS. 2 a -2 f    illustrates the dispensing head  15  and plural sectional views along the sectional lines A-A (broadside) and B-B (narrow side). In the left lower sectional view of  FIGS. 2 a -2 f    no filling valves are provided in the output openings  18   a, b  differently from the left upper sectional view in  FIGS. 1 a -1 c    since the filling valves are not necessarily required for the pasty substances but are required for liquids. Furthermore a circumferential seal lip  15   b  is visible which interacts closely with the upper edge  13   b  (c.f.  FIGS. 3 a  and 3 b   ) of the outer shell  13  so that the entire arrangement besides the balancing valve is configured pressure tight. When the dispenser  10  is arranged as a disposable arrangement the thread  16 ′ can be replaced by a permanent welded connection of the dispensing head  15  with the outer shell  13 . Additionally there is the option that the inner containers  11   a, b  are inserted into the outer shell  13  and the outer shell  13  is welded thereafter. The two or more containers  11   a, b  can also be connected with the outer wall  12  in the one way configuration. By the same token the two or more containers can also be coupled with each other by tube  17  leading to the output openings  18   a, b  (c.f.  FIGS. 4 a -4 d   ). These tubes  17  with openings  17 ′ stabilize the containers  11   a, b  made from a thin wall material like e.g. foil and prevent a collapsing of the containers caused by progressive depletion. In the embodiment the substances stored in the containers  11   a, b  are put out by an applicator  24  that is centrally arranged on a top side of the dispenser  10 . 
         [0032]    The applicator  24  that is illustrated in more detail in  FIGS. 6 a -6 d    includes  2  channels  28  for separately feeding the substances stored in the containers  11   a, b  wherein the output is provided at an annular gap  27  which is interrupted by a connecting bar  25 . This embodiment provides a separate feeding of the substances to the applicator  24  or to a top side with a cambered applicator surface  29 . An applicator  24  of this type is described in more detail in DE 20 2011 002 558 U1. 
         [0033]    As described supra an intermediary space  14  that is filled in the air is arranged between the outer wall  12  of the dispenser  10  and the containers  11   a, b . This intermediary space  14  assures even distribution of pressure imparted upon the outer wall  12  which is necessary for retrieving the substances from the containers  11   a, b . After retrieving a particular amount of a substance (in the operating or upside down position according to  FIGS. 5 a  and 5 b   ) outside air flows through the balancing valve  23  into the intermediary space  14  and causes on the one hand side that even pressure distribution is in turn provided upon the next retrieval of substance and on the other hand side that the outer wall  12  of the dispenser  10  is brought back into its starting position. The dispenser  10  that is put right side up again as illustrated in  FIGS. 1 a -1 c    thus has sufficient stand safety and looks full. 
         [0034]      FIGS. 4 a -4 d    illustrates an advantageous embodiment of the unfilled or empty containers  11   a, b  configured as foil bags which are welded with seal seams  11   c.  The seal seams can have any shape. It is also possible to combine two containers  11   a, b  by continuous seal seams  11   c  to form a two cavity bag which is then inserted into the outer shell  13 . The outer wall  12  eventually determines the looks of the dispenser  10  and thus contributes to its differentiation. 
         [0035]    In addition to the illustrated arrangement of two containers  11   a, b  with identical volume there is also the option that the containers  11   a, b  have different volumes. Additionally the dispensing head  15  or the applicator  24  can heave diameter reduced output openings  11   a, b , so that a constant ratio of substances is always put out when the dispenser  10  is evenly loaded with pressure. For this embodiment of the dispenser  10  then for example an additive mixing of a smaller amount of a substance to a larger amount of additional substances can be performed. This is advantageous for example when the dispenser  10  is used for multi component glues which only require a small additive mixing of a hardener. Besides the use with glues there is certainly also the option to use the dispenser  10  for cosmetics, wherein for example a connection of the substances for forming for example a care substance is only performed when the substances exit the dispenser  10 . Through the configuration of the applicator  24  as illustrated in  FIGS. 6 a -6 d    a spreading of the cosmetic substances exiting from the dispenser  10  can be performed during application, for example on the skin or on the lips. 
         [0036]    According to  FIGS. 5 a  and 5 b    the dispenser  10  also includes an applicator  24  that is adjoined on a right side by the balancing valve  23 . This prevents an exit of air from the intermediary space  14  of the dispenser  10  in the upside down position with the downward dropping sealing ball against a sealing seat, so that the container  11   a, b  can be compressed upon a manual pressure loading of the outer wall  12  and the substances are put out. After rotating out of the overhead position wherein the sealing ball  23   a  falls back again gravity induced within the cage  23   b,  c.f. position in  FIGS. 1 a   - 1   c,  air can flow in through the balancing valve  23 . The embodiment according to  FIGS. 5 a  and 5 b    illustrates a modified version of the cover  10 ″ namely with a spout shaped extension which can be cleaned after a use using the plug on cap (c.f. DE 20 2008 015 776 by the applicant). 
         [0037]    In addition to the configuration of the applicator  24  with a defined diameter of the output openings  18   a, b  also using an adjustable system is feasible where a cross section or a size of the output openings  18   a, b  is variable as a function of the amount to be dispensed. The dispenser  10  according to the invention thus forms a cost effective alternative to dispensers  10  with pumps and thus facilitates a relatively precise dosing or a precisely adjustable mixing ratio of the dispensed substances due to the air filled intermediary space  14  due to the absolutely identical pressure ratios which impact the containers  11   a, b  arranged in the dispenser  10  since the containers  11   a, b  are arranged in the same pressure cavity or outer shell  13 . 
         [0038]    In particular the balancing valve  23  in particular in combination with the filling valves  19  in the containers  11   a, b  facilitates effective filling of the containers  11   a, b  so that a compressed air connection can be applied to the balancing valve  23  so that the intermediary space  14  of the preassembled can be loaded with compressed air. Since the outer shell  13  and the dispensing head  15  are sealed e.g. through the seal lip  15   b  and the applied seal edge  13   b  the air pressure impacts the inserted containers  11   a, b  and presses them flat, thus almost evacuates them. Then a commercial filling head can be applied to the openings  18   a, b  (c.f. in particular  FIGS. 2 a -2 f    center perspective view) for both substances so that the components can be filled in the containers  11   a, b  substantially without air, this is particularly important for a subsequent uniform feeding out the dispenser  10 . After removing the filling head the filling valves  19  or pasty substances close the dispensing openings  18   a, b  until the dispenser is used or an applicator is applied which opens the output openings  18   a, b  with the spike shaped protrusions  20 . 
         [0039]      FIGS. 7 a  and 7 b    illustrates another embodiment of the dispenser  10  according to the invention which includes  2  containers  11   a, b  as a container arrangement  11  in this embodiment. The containers  11   a, b  are thus arranged with their upper portion (outlet potion  13   c ) within an outer shell  13  of the dispenser  10  wherein the outer shell is made from a relatively stable plastic material PE or PP. Like in the embodiment according to  FIG. 1-6  wherein identical reference numerals are used for like components the outer wall  12  that adjoins in downward direction is configured more easily deformable relative to the more stable outer shell  13  so that it can be gripped and squeezed by a human hand. The deformability of the outer wall  12  is selected so that it facilitates a safe standing set up of the dispenser  10  together with the outer shell  13  unless a cambered base  10 ″ is provided like in this case. The containers  11   a, b  that are arranged in an interior of the outer wall  12  are also made from a deformable material wherein a material thickness however can be very small, in particular like a foil. Between the containers  11   a, b  and the outer wall  12  there is an intermediary space  14  which is filled with outside air through the balancing valve  23  described supra, c.f.  FIGS. 1 a -1 c    left sectional view. The dispenser  10  also includes a cover  10 ′ c.f. also  FIGS. 9 a  and 9 b    in open condition which covers the dispenser  10  and the ventilation hole of the balancing valve  23  dust proof in order to prevent contamination during long term storage. 
         [0040]    In the right sectional view (centrally through the cylindrical dispenser  10 ) the filled containers  11   a  and  11   b  are visible wherein the containers transition with their dispensing openings  18   a, b  and the outlet portion  13   c  into a dispensing head  15 . The dispensing openings  18   a, b  for the stored substances are configured spout shaped in the embodiment and facilitate a separate output of the substance stored in the containers  11   a, b  so that a mixing can only be performed subsequently in the outlet or during exit from the dispensing head  15 . When the outer shell  13  and the dispensing head  15  are configured as reusable arrangements, the containers  11   a, b  can be retrieved after removing the dispensing head  15  from the outer shell  13  (c.f. snap locking connections  15   a / 13   a ) and can be replaced with new containers  11   a, b . The dispensing head  15  includes lugs  15   a  in its lower portion which engage a respective upper groove  13   a  (c.f. also  FIGS. 8 a -8 c    of the outer shell  13 ). Thus also a second lower groove  13   a  is provided at a distance from the outlet portion  13   c.  Compared to the position illustrated herein the dispensing head  15  can be pressed even further downward, so that the lugs then engage a second lower groove  13   a  (c.f.  FIGS. 9 a  and 9 b    and also  FIGS. 11 a  and 11 b   ) so that subsequently described spikes  16   a  penetrate or open a diffusion seal  17   a.    
         [0041]    The balancing valve  23  illustrated in the left sectional view of  FIGS. 7 a  and 7 b    is configured as a ball valve in the embodiment and facilitates air access in the position in  FIGS. 7 a  and 7 b   , however prevents air exit in the upside down cooperating position (c.f.  FIGS. 9 a  and 9 b   ). In addition to an embodiment as a gravity actuated ball valve as illustrated herein there is also the option to provide the balancing valve  23  as needle valve. And extension of the balancing valve  23  is thus configured similar to the outlet portion  13   c  as a “turret” which can be used as a filling valve  19  during filling (c.f.  FIG. 10 ). 
         [0042]      FIGS. 8 a   - 8 , upper perspective view illustrates a circumferential sleeve  16  inserted into the dispensing head  15  from below which includes  2  points  16   a  in its interior (c.f.  FIGS. 7 a , 7 b , 9 a  and 9 b   ) which are used for penetrating or opening the diffusion seal  17  when the dispensing head  15  is pressed further downward from the position in  FIGS. 7 a  and 7 b    (lugs  15   a  in upper position) and interlocks there in the grooves  13   a.    
         [0043]    In the center perspective view of  FIGS. 8 a -8 c    the cap shaped outer shell  13  is illustrated as a base portion of the dispensing head  15  from below. Thus the boundaries for the dispensing openings  18   a, b  are visible together with the integrally cast cage  23   b  of the balancing valve  23  and a seal lip  13   b  for a tight connection with the outer wall  12  (c.f.  FIGS. 7 a  and 7 b   ). In the lower perspective view of  FIGS. 8 a -8 c    the spout shaped dispensing openings  18   a, b  which essentially form the outlet portion  13   c  are visible and the filling valve  19  recited supra. The tubes  17  leading to the dispensing openings  18   a, b  are advantageously coupled together. These tubes  17  with openings  17 ′ stabilize the containers  11   a, b  made from a thin wall material like e.g. foil and prevent them from collapsing while being depleted. Through these spouts of the dispensing openings  18   a, b  an additional diffusion seal  17   a  in particular made from metal is applied (c.f.  FIG. 10 ) or sealed with a multi-layer foil or by vapor deposition in order to prevent oxygen access to the substance over a long time. In the embodiment putting out the substances stored in the containers  11   a, b  is performed through a central outlet  18   c  (c.f.  FIGS. 9 a  and 9 b   ) arranged on top side of the dispenser  10 . 
         [0044]    As described supra there is an intermediary space  14  between the outer wall  12  of the dispenser  10  and the containers  11   a, b  which is filled in air. This intermediary space  14  facilitates an even distribution of pressure applied to the outer wall  12  wherein the pressure is required for removing the substances from the containers  11   a, b . After removing a certain amount of a substance in the operating position or upside down position according to  FIGS. 9 a  and 9 b    outside air flows through the balancing valve  23  into the intermediary space  14  and causes on the one hand side that an even pressure distribution is provided during the next retrieval of substance and on the other hand side that the outer wall  12  of the dispenser  10  is brought back into its starting position. 
         [0045]    In addition to the arrangement of two containers  11   a, b  with identical volumes there is also the option for the containers  11   a, b  to have different volumes. Furthermore the dispensing head  15  can have diameter reduced dispensing openings  18   a, b  so that a respective ratio of substances is put out for an even pressure loading of the dispenser  10 . For this embodiment of the dispenser  10  then for example an additive mixing of a smaller amount of a substance to a larger amount of additional substances can be performed. This is advantageous for example when the dispenser  10  is used for multi component glues which only require additive mixing of a small amount of hardener. Besides a use with glues there is certainly also an option to use the dispenser  10  for cosmetics, wherein a connection of the substances performing for example a care substance is only performed when the substances exit the dispenser  10 . Using an applicator a spreading of the cosmetic substances exiting from the dispenser  10  can be performed during spreading, for example on the skin or on the lips. 
         [0046]    According to  FIGS. 9 a  and 9 b    the sealing ball  23   a  that drops in the upside down position downward against a seal seat prevents an exit of air from the intermediary space  14  of the dispenser  10  so that the containers  11   a, b  are compressed for a manual pressure loading of the outer wall  12  and the substances are being dispensed. After rotating out of the upside down position wherein the sealing ball  23   a  drops back again gravity induced within the cage  23 , c.f. position in  FIGS. 7 a  and 7 b    an inflow of air can be provided through the balancing valve  23 . The dispenser  10  is advantageously stored lying flat after utilization as commenced by opening the diffusion seal  17 . 
         [0047]    Additionally the balancing valve  23  together with the filling valve  19  in the containers  11   a, b  facilitates an effective filling of the containers  11   a, b  as illustrated in  FIG. 10 . Thus a compressed air connection can be applied to the balancing valve  23  through the filling valve  19  so that the intermediary space  14  of the preassembled dispenser  10  can be loaded with compressed air. Thus the air pressure impacts the inserted still empty containers  11   a, b  and presses them flat thus essentially with no air in them. Then a typical filling head for both substances can be applied to the adjacent openings  18   a, b  so that the components are filed into the containers  11   a, b  essentially without air. This is relevant in particular for a subsequent even feeding out of the dispenser  10  but also for storing oxidation sensitive materials. After removing the filling head the diffusion seals  17   a,  in particular provided as aluminum caps are applied to the spout shaped dispensing openings  18   a, b  as well as the dispensing head  15  initially similar to the position in  FIGS. 7 a  and 7 b    wherein the diffusion seal  17   a  are not yet perforated. For operations the dispensing head  15  is then pressed further so that the lugs  15   a  interlock in the lower groove  13   a  and the diffusion seal  17   a  is penetrated by the spikes  16   a . Thus the spikes  16   a  operate similar to the protrusions  20  in  FIGS. 6 a   - 6   d.  Furthermore a blocking ball  21  is advantageously inserted into the respective dispensing opening  18   a, b  wherein the blocking ball  21  can seal the container arrangement  11  also without spring loading (c.f. compression spring in  FIGS. 1 a -1 c   ) as will be described infra. 
         [0048]      FIGS. 11 a  and 11 b    illustrates a modified embodiment similar to the illustration in  FIGS. 7 a  and 7 b   . Therefore the same reference numerals apply accordingly as in the preceding description. In the right illustration thus only over the right dispensing opening  18   a  an aluminum cap is drawing as a diffusion seal  17   a  for emphasis in a thicker line. In practical applications the diffusion seal  17   a  can be very thin, e.g. also configured as a coating or vapor deposition with thus it is sufficient that the substance carrying central outlet portion  13   c  is coated, wherein also the entire cap shaped outer shell  13  can be vapor deposited. Thus the outer shell  13  can be injection molded with economical plastic materials. 
         [0049]    As stated supra a respective blocking ball  21  made from metal or glass is inserted within the dispensing openings  18   a, b  in a particularly advantageous embodiment (c.f.  FIG. 10  in the idle position) which is pressed further downward by the mandrel shaped spikes  16   a  for operating the dispenser  10 , thus the blocking ball is opened together with the diffusion seal  17   a  in that the dispensing head  15  (from the left position) is pressed downward (into the right end position) and then interlocked in the lower groove  13   a.  In  FIGS. 11 a  and 11 b   , left illustration an intermediary position is shown into which respective blocking ball  21  is pressed after filling relative to the idle position in  FIG. 10  by the known filling head into a central contraction. Thus the container content is safely sealed for long term storage. Above and below this contraction small radial bars  21 ′ are formed into the dispensing opening  18   a, b  so that the respective filling can be performed in the upper position of the blocking head  21  (c.f.  FIG. 10 ) quickly and unimpeded so that the blocking ball  21  is pressed into the center position at the contraction thereafter so that the containers  11   a, b  are safely sealed. For a subsequent use of the dispenser  10  the dispensing head  15  is pressed down further ( FIGS. 11 a  and 11 b   , right illustration) so that the spikes  16   a  or similar protrusions  20  do not only puncture the diffusion seals but also move the blocking balls  21  from the center contraction (sealing position) downward into the expended portion so that the respective substance can flow out easily. 
       REFERENCES AND DESIGNATIONS 
       [0000]    
       
           10  dispenser with cover  10 ′ and base  10 ″ 
           11   a, b  container with sealing seam  11   c    
           12  outer wall 
           13  outer shell with grooves  13   a    
           13   b  seal lip or edge 
           13   c  outlet portion 
           14  intermediary space 
           15  dispensing head with lugs  15   a,  seal lip  15   b    
           16  enveloping sleeves with points  16   a,  thread  16 ′ 
           16   a  thread  16 ′ 
           17  tube with openings  17 ′ 
           17   a  diffusion seal 
           18   a, b  dispensing opening 
           18   c  central outlet 
           19  filling valve 
           20  protrusion 
           21  blocking ball with radial bars  21 ′ 
           23  balancing valve 
           24  applicator 
           25  connecting bar 
           27  annular gap 
           28  channels 
           29  application surface