EP0695269B1 - Method of fabricating a delivering device - Google Patents

Abstract

PCT No. PCT/EP94/01343 Sec. 371 Date Nov. 6, 1995 Sec. 102(e) Date Nov. 6, 1995 PCT Filed Apr. 28, 1994 PCT Pub. No. WO94/25371 PCT Pub. Date Nov. 10, 1994A dispensing container, comprising: a vessel body container and at least one reception container, the containers defining a container space sub-divided into substantially separated first and second space sections; the vessel body container defining a first container shape in the vicinity of the first space section, the first space section being adapted for receiving a first volume of a first medium; the second space section being adapted for receiving a second volume of a second medium, said first and second volumes being operationally variable; said second space section including a reception space, and being bounded by a section wall expandable to a full-size shape substantially corresponding to the first container shape, and, a pump for expelling at least one of the media with manually exerted pressure, wherein the section wall, when expanded, includes a region substantially free of tension.

Description

The invention relates to a method according to the preamble of Claim 1. The discharge device can for a single medium or several media can be provided by each of which is gaseous, liquid, pasty, powder or powder or the like and / or a mixture of such to be discharged Custom media can be.

Before or after the first discharge of a custom medium a container space, such as a reservoir, a pressure or Pump room or the like. This can be temporary or via the total remaining service life only partially with the Custom medium be filled, then the remaining one or more Remaining spaces of the container room with one for the discharge not or not primarily determined second or replacement medium are filled. This can e.g. one with the custom medium chemically unresponsive and / or physically im Custom medium not be solvent medium, so the two The media, despite their immediate contiguity, at least in flow-free calm state clearly separated are. However, the second medium can contain impurities such as Dirt, germs or other substances that react with the custom medium Contain ingredients that are then the custom medium for its predetermined medical, cosmetic or other purposes spoils. To avoid this danger, the or the second medium, preservatives, stabilizers or similar substances are added, however, these are often because of medical side effects, for cost reasons or the like. undesirable.

A discharge device can be found in EP-A-0 011 394, whose receptacle manufactured as a blow molding one Bracket section in the form of a thickened sleeve approach has, which first pushed over a rod tube and then with this via a vessel lid on the plastic manufactured vessel body is attached.

The invention has for its object a method of to create the type mentioned, at which disadvantages known Training or the type mentioned are avoided. A Another task can be unwanted contaminants of the custom medium to reduce significantly avoid, as long as this medium is not discharged, but is still saved to the outside. Further Tasks can be simplified in a manufacturing, one easy to use or with a high level of functional reliability the discharge device.

According to the invention, the features according to claim 1 intended. It is useful to have at least two containers significantly different or approximately the same, in particular not have inherently rigid wall thicknesses, in mutual material connection made or shaped, after which they move from this position into a different one Operational or initial functional position are transferred. This enables very simple production, e.g. a one-piece production, a production in a heat and / or production in a single operation, if not the shape of the two containers is complete or at least partially as consecutive it is provided that after the one container is finished others are subjected to further shaping. For the Inclusion of a single secondary medium or several different ones Second media is the only one or at least one Second or expansion and receptacle provided whose receiving space opposite one or the respective associated Container space at least in one operating state in the can be essentially closed. The receptacle is standing only partially or not in contact with the custom medium, so he can e.g. with one of the impurities free second or Replacement medium filled or against Impermeability to the outside is hermetically sealed be and the replacement medium as needed to the areas of the container space free from the customary medium submit one or more line connections. Especially However, it is useful if a receptacle with a Container wall or the like. Directly to the custom medium adjoins or the space areas of the Container space partially or for the most part or approximately completely filled out, essentially independently of which variable degree of filling or to which Percentage that the custom medium just fills the container space. In contrast to a drag or climbing piston or the like. There are no large-area and tight sliding seats needed, which in turn prevents the ingress of contaminants can hardly be closed.

Nevertheless, the training of the Custom medium in the space area occupied by the volume essentially independent of the total volume of the container space approximately to the volume of the filling with the custom medium be limited so that there is always an at least approximate Full filling of this area only with the custom medium results. It can be used in areas where the custom filling this custom filling is not adjacent to the body of the vessel essentially only on the changeable container wall adjoin the receptacle so that the Training according to the invention instead of for the effects mentioned also only suitable for custom filling against shaking movements to protect.

Regardless of the effects described, the to the Custom-filling adjacent receptacles for this too be provided, the pressure of the custom filling or in the container space by changing the position of a container wall or the like. to influence, e.g. in order to draw a vacuum or to generate an excess pressure to discharge the custom medium or in the case of pressure changes caused otherwise To effect damping. Furthermore, a container wall a receptacle in at least one operating state preloaded and / or detachable on the inside of a vessel wall fit and if necessary support them elastically. A receptacle can also be provided alone for the stored custom medium essentially completely to displace the container space and / or the external shape of a The vessel is essentially independent of the degree of emptying received because e.g. the receptacle walls of the Vessel after its indentation, if necessary, via the between it and resets the medium lying on the wall.

A receptacle for one separate from the custom medium Medium is almost for any discharge devices or Vessel body suitable, e.g. for bottles, tubes, pump or Cylinder chambers of thrust piston pumps or the like, bag containers, Canisters, tanks etc. provided the custom medium is light volatile or easily flammable, can with a receptacle or substitute medium dangerous gas mixtures in the essentially completely expelled from the container space become.

A receptacle is for the named or other purposes expediently not designed as a bellows, the wall of which the largest areas of their extension are pre-folded joint zones forms, but the wall can be different, take any folds and is advantageously so flexible that the receptacle in the emptied state sagging bladder forms their opposite Wall areas with their insides without any special Force can be put together. In the empty This can condition the receptacle to a volume of space be reduced, the much smaller than half, one A quarter or a tenth to at least a fiftieth of its room volume in the maximum filled operating state is.

For filling or emptying a receptacle and / or a container space, a valve can be provided that dependent on flow or pressure instead of mechanical actuation is controlled, especially so that it essentially can only be flowed through in one direction while its flow cross-section for flows in the other direction on the other hand, is narrowed or completely closed. The discharge device provided in the area of an outlet, which is also provided by a pump unit separate from the vessel or a thrust piston pump, a bellows pump or the like. Formed can be and flows through with the discharge of the custom medium control of the passage of the receptacle influence or effect. E.g. can essentially before, during and / or after the outflow of the custom medium the passage of the receptacle is closed or opened be. In particular, the control is provided so that essential only due to the discharge of a Batch of the custom medium created in the container room Negative pressure the replacement medium or the receptacle is exposed to an attractive effect that leads to it Spread into those areas of the container room leads, which become free through the discharge of the custom medium are.

The respective receptacle can by a Area provided by or through an emptying opening Opening partially or completely formed opening inserted in the container space and this opening if necessary also as an assembly opening for secure anchoring of the Receptacle used within the container space become. However, one of these will be useful for this purpose removed or separate mounting opening used, e.g. one opposite the discharge zone of the container space Wall or a bottom wall of the vessel penetrates. A Assembly wall, which at the same time to secure its position Anchoring an associated section of the receptacle can serve is appropriate by profiling or the like. much more rigid than especially those that cross it laterally Walls. This or another assembly wall can also be reinforced by a kind of cross-sectional thickening, which e.g. through a separate body, like a bracket, a flange, a closure for the assembly opening, a valve housing or the like is formed. Instead of one The vascular space can also open in the area of the outlet zone filled with the custom medium through an assembly opening then the associated receptacle used and assembled as well as the assembly opening can be closed. The receptacle can be included of the lock a pre-assembled unit form, the appropriate stop limited so in the mounting opening is to be used that if necessary on the outside of the Vessel or the discharge device lying sections completely sunk in a recess on this outside lie.

The expansion tank can also be made of the same or one Material with the same properties as other limitations of the container space, e.g. not about the custom medium to bring them into contact with different materials or for a single reuse of the container materials without making cumbersome previous sorting easier. The inside of the outer container can be partial or completely or in all coming into contact with the medium Areas with a thin film or similar lining or coating made of the appropriate material be the one-piece with the volume changeable Compensating or filling body is formed. This Packing is advantageous due to a one-piece design with it and / or opening defined by the outer container Turning the inside to the outside, which makes it from an outer layer to an inner layer in the outer container or can be transferred in the opposite direction. The opening can be narrower or about the same as the largest or average width of the respective container, depending on how the walls of the slip-on container are flexible. The Inverting or inserting the packing into the outer container can be mechanically or additionally or exclusively by at least one driving fluid take place, which one Filling body narrowing or sucking this vacuum also in the outer container and / or the filler in the Outer container promoting positive pressure causes.

The lining or is essentially maximum expanded packing on the inside of the outer container essentially wrinkle-free all over both Scope as well as on the end faces and possibly in Area of container openings or nozzles, so that a complete emptying of the container space without remaining any cavity is possible. In particular, this can can be achieved if the outer container as a mold for the lining or the packing is formed. Will the Container body or the filling body from a e.g. caves, Cup, sleeve or tubular blank with reduction the wall thickness produced by stretching, so can the lining or the packing after completion of the Outer container or then brought into its finished form be, while also the outer container of the shape mentioned is subject. The respective can be used for shaping Outer, lining or filling container, if necessary under suitable elevated temperature, inside with a Fluid pressure applied and / or a vacuum on the outer circumference exposed and thereby shaped against a tool that forms only a negative form of the outer form. So it's one Production possible by extrusion or blowing process.

By the training described can also two adjoining and possibly separate ones Space-limiting containers almost in one operation together and / or at least partially to substantially or be made entirely in one piece. You can at least wall parts of the two containers are very different Wall thicknesses corresponding to 5, 10 or 15 times have, these values minimum or maximum limits can represent. E.g. can the walls of a container inherently stiff and that of the other much less Be firm, so that it is foldable. The two containers can be in mutual Outside layer are prefabricated, after which the less stiff containers at least partially into the stiffer container is transferred.

The training courses according to the invention are also for so-called Squeeze bottles suitable, from which medium discharged is that the squeeze container is compressed manually and thereby the medium in it Discharge pressure is subjected. With such or other containers can be made up of two separate media Containers using the same manual discharge actuation pressure simultaneously, successively or carried out overlapping medium and separate outlet openings, a common outlet opening and / or with a constant orientation of the discharge device outside the respective discharge opening of an application site be fed. E.g. can the inner container by increasing the pressure in the outer container over that in this contained fluid are subjected to an overpressure by which the medium contained in it is discharged. At Pressure relief becomes the compensation chamber of the inner container then refilled by a volume equal to that from it volume discharged plus the volume that corresponds discharged from the outer or media container is. Should in the expansion tank, as conceivable, none Medium from the discharge opening of the discharge device adjacent to the outside or sucked in from the media container, so can one of the outlet opening of the expansion tank separate suction opening can be provided, e.g. with the Atmosphere. To control the named discharge or the refilling of the expansion tank can be a Appropriate valve control, if necessary with two-way or staggered opening and closing valves be which pressure and / or path dependent or mechanical work controlled.

Before filling the discharge device, especially for Filling with one of the media or fluids mentioned becomes too filling container space expediently on a substantially until completely void-free volume is narrowed and then like this filled with the medium that it is only by the volume of each introduced medium is expanded until it reaches its predetermined Filling quantity has taken up. This can penetrate of foreign medium or air into the filling chamber completely be excluded and the discharge device in the filled Initial state must be filled without bubbles. When using a Volume-adjustable expansion tank can fill take place under excess pressure, which against the internal pressure of the Compensation tank works and to the accompanying Emptying or reduction leads and / or the expansion tank can be evacuated under a vacuum be set, which leads to a suction of the medium in the Container space leads.

In any case, the respective container, e.g. the expansion tank, when emptying by random folding are so narrowed under wrinkling or the like of its walls, that opposite walls with their insides be applied to one another essentially without a gap or the Containers are even substantially to completely void-free and only takes up a volume that the simple or at most 4 to 5 times the material volume of it Corresponds to walls. Especially when the inner container in maximum expanded condition relatively large to full area bears against the inside of the outer container the inner container on the outside expediently at least one or spaced apart projections, such as Folds, ribs or similar spacers that take place its or additionally on the inside of the outer container can be provided and by which even then Passage gap for the medium remain free when the inner container applied to the inside of the outer container Has. This can also avoid that the inner container the outer container into two tightly separated Container spaces divided. Because of the wrinkled or disordered Folding of the inner container can be found on the outside do not form inclusions or closed chambers, which is caused by constriction when emptying the container space and could form with media filling, so that also a complete emptying of the entire stored Medium is guaranteed.

These and other features go beyond the claims also from the description and the drawings.

Fig. 1

einen Ausschnitt einer erfindungsgemäßen Austragvorrichtung im Schnitt und in einem Fertigungszustand, und

Fig. 2

einen Rohling zur Herstellung der Austragvorrichtung nach Fig. 1.

An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:

Fig. 1

a section of a discharge device according to the invention in section and in a manufacturing state, and

Fig. 2

a blank for producing the discharge device according to FIG. 1.

The discharge device 1 has an elongated bottle-shaped one Vessel 2 in the form of a thin-walled hollow vessel body made of flexible plastic, which a container space 3 limited in shape and almost with one hand can be completely encompassed. The vessel body 2 is in the essentially by consistently approximately constant thickness Vessel walls 4 to 6 formed, the thickness of which is less than 5 or 2 mm and can be of the order of 1 mm. An approximately cylindrical vessel jacket 4 closes at one end in one piece on a transverse to it, possibly ring-shaped Bottom wall 5 and at the other end in the area of one Discharge zone 7 on an end wall 6 through which the custom medium via a vessel neck 8 from vessel 2 to be carried outside to the outside. Here are the bottom wall 5 and / or the end wall 6 in contrast to Vessel jacket 4 essentially dimensionally stable. On or in the of the end wall 6 protruding in one piece only, likewise dimensionally stable neck 8 is a discharge device with a body essentially fixed in position and centered through which the customary medium is to be discharged is.

For such or another discharge device 1 is at least one leveling device 10 provided for that by first medium free second space area of the container space 3 to be filled in partially or completely so that this area over a large area directly to the from Medium adjacent to the first room area. By However, flow movements of the medium are the two Completely deformable areas, e.g. so that at Changes in position of the vessel 2, the specifically lighter second Area always has a tendency to the first Room area to rise to the top. In the upright position according to Fig. 1 therefore becomes the second area due to buoyancy in the direction stretched to the projecting zone 7, while in reverse Overhead in the direction of the bottom wall 5 rises.

The second room area is occupied by a second medium in the essentially completely ingested, that of the first space area sealed in a receptacle 15 included, which is essentially complete here encapsulated within the container space 3 and how its Container wall 16 relative to this container space 3 or first area of the room over most of its extent essentially in the direction of one, two or three spatial axes is free to move. The one-piece and is approximately constant thick container wall 16 is essentially limp, but self-resetting too elastic and / or permanently deformable by tensile expansion without tear. It can be used without any damage to any Place folded equally and therefore the receptacle 15 also to be crumpled up so that by him enclosed recording space reduced to zero volume becomes. The receptacle can be filled with the second medium 15 up to its maximum volume size Unfolding can be converted into all intermediate sizes, wherein each adjoining in the longitudinal and / or transverse direction Sections of the receptacle 15 and the Container wall 16 substantially independently of one another in deformed in these directions and / or transverse to their surface or be moved and therefore to any distribution of the first medium in the container room 3 or in the first room area can adjust. At maximum volume size, the receptacle can 15 the container space 3 almost completely or Fill in at least 80 to 90%.

At one end it goes through a e.g. seamless pouch a crumpled film existing container 15 into one Container neck 17 or a bag edge over the one piece with the remaining container wall 16 is formed and taut expanded condition about the same width as the subsequent one have exposed longitudinal portions of the bag or on the other hand, as can be narrowed in the assembled state. in the The area of the container neck 17 is the receiving container 15 compared to the container room 3 with a bracket only one, close to the boundary of the room 3 lying area set while all other areas of the receptacle 15 up to the flat stop on the vessel walls 4 to 6 in relation to the container space 3 in each of the directions are freely movable.

It is conceivable to make the receptacle 15 completely hermetic trained closed and e.g. before just by Destructive closure with a medium such as a Reagent to fill, which is adapting to the emptying of the first area. A particularly simple one Training arises, however, when the receptacle 15th or the second room area according to the decrease in first room area is refillable so that in this Spaces at least when the discharge device is at rest 1 approximately atmospheric pressure. To this end an equalization passage is provided, which is a line connection between the inside and the outside of the receptacle 15 forms, which at least partially saves space or may lie entirely within the container neck 17.

The passage forms a connection between the interior of the container and the outside atmosphere, so that in the receptacle 15 or the second room area from outside the container room 3 Air with lower flow resistance as required can be sucked in as it comes out again can be expelled. These effects could be appropriate operation by designing the passage can be achieved as a flow restrictor, but results a faster response to the effects if this is a Control valve, like a one-way or check valve is provided. If there is overpressure in the receptacle 15, it closes this valve and under vacuum opens it.

The discharge device 1 is useful with a pump provided with which the custom medium on the one hand Discharge zone 7 and on the other hand those in the recording room of the receptacle 15 contained amount of the specific easier second or balancing medium, e.g. during the resetting of the pump stroke Pump must be raised to the starting position by suction. The Pump is designed like a bellows or squeeze pump, namely by manually narrowing the vessel wall 4 and thus to actuate the outer circumference of the container space 3. The pump is e.g. thereby resiliently self-resetting, that the vessel 2 after compression and release due its inherent elasticity approximates its original form or returns to the initial size of the container space 3. When the pump is actuated, in the pump or container space 3, namely in the first room area and in the second room area 13 causes a pressure increase that closes the valve and an outlet channel assigned to the discharge device Exhaust valve is opened depending on pressure. This occurs first or custom medium over the distance from the vessel wall 6 within the container space 3 the receptacle 15 opposite inlet of the outlet channel in the latter one, passes the valve and exits from the outside the discharge device 1 or the discharge device Exhaust opening, which may be necessary before first use a completely closed wall can be formed, which is to be pierced to the opening. The actuation leads also to an increase in pressure of the second medium, which then over the wall 16, the first medium in the manner of a resilient Can slowly discharge energy storage.

At the end of this pump stroke, the pump will stop operating released, so it sets itself to the starting position back, whereby in the container space 3 or in the first or second A vacuum is created in the area of the room and thereby the valve is opened. This is like a ventilation of the container space 3 in the receptacle 15 from the outside air such sucked in that the volume of the receptacle 15th by unfolding and / or expanding its container wall 16 approximately increased in volume by the previous one Discharge of the first medium 11 in the container space 3 free has become. At the beginning of this suction, the outlet valve closes e.g. depending on pressure and / or before or at the latest at Opening the control valve so that the outlet in the Container room 3 or the first room area no air from can be sucked in outside. The pump can also run through the Discharge device formed and e.g. as bellows and / or Piston pump to be formed, with the vessel wall can be dimensionally stable.

With increasing emptying of the first room area, the Receptacle 15 expanded. The first can Medium 11 after each by changing the location of the Vessel 2 changing gravitational relationships in the Redistribute the vessel space 3 and the shape of the receptacle 15 adapts accordingly. Here, the container wall 16 temporarily on the inside of the respective vessel wall Apply 4 to 6 flat or slightly adhesive and then detached and opened by the first medium Distance. The first medium is not preferred or less compressible than the second medium that comes with the Receptacle 15 usually one over most of his Circumferential flow around the displacement or core body in the container space 3 can form. The container wall 16 can, however also in the manner of a climbing piston along the Inside of the vessel wall 4 in the direction of the discharge zone 7 create so that the first room area the second room area does not surround in the manner of an envelope, but transversely to the central axis in relation to the second area through the intermediate end section of the container wall 16 is separated.

The container space 3 can in when the discharge zone 7 is closed Head position or the like. Through a mounting opening 27 with the first medium are filled. Only then will the Receiving container 15 used unit and thereby the filling opening 27 is closed. The can in essential empty receptacle 15 first on the in Container space 3 located medium or in this be pushed in. Can also be filled via the discharge zone 7 become. The container space can be with the inside of it Vessel jacket a cylinder liner for a pump piston form with which in axially successive partial strokes individual discharge batches can be pressed out, e.g. about an outlet channel passing through a pump piston.

The inside of one to all vessel walls 4 to 6 and of the neck 8 and thus the discharge zone or discharge opening 7 can be partially or completely with a thin coating or cover or lining, which partially or completely on the inside is attached unsecured or adhered and as by means of of the expansion tank 15 described an inner container forms the wall associated with the respective vessel wall from a very thin, flexible plastic film exists, but which is smoothed in substantially wrinkle-free Position reinforced by the associated vessel wall and so at least when the container space 3 is full, also under the fluid pressure is secured.

The receptacle 15 or the inner container has walls 54 to 57, 63, namely the jacket wall 54 which is attached to this subsequent, washer-shaped or truncated cone-shaped bottom and top walls 55, 56, one directly on the wall 55 subsequent, approximately by the wall thickness of the vessel wall 4 narrowed section 57 of the casing wall 54 and one starting from the top wall 56 and narrowed Neck portion 63. You can choose the associated one Cover the vessel wall essentially completely. To each other bordering walls go in one piece and in cross section in each case also a substantially full-surface Rounding 60 with constant wall thickness into each other. Of the Radius of curvature of the curves 60 is larger, for example 2 to 5 times greater than the wall thickness of the vessel walls.

The inner container can e.g. from one into the vessel body 2 introduced or penetrating this in the openings 7, 27 Foil tube blank by applying overpressure inside, evacuation of the area between the vessel walls and the lining walls and / or elevated temperature with permanent wall stretching and widening immediately to the inner sides or the end face mentioned of the neck 8 are formed so that the vessel body 2 Forming tool forms and the inner container an exact picture the associated surfaces of the vessel body 2 without any Represents spaces. The vessel body 2 can preformed or at the same time in the manner described still against a mold determining its external shape be molded, the elevated temperature promoting adhesion caused between the walls. The inner container can but also in a separate, reusable Mold partially or completely preformed, cooled or removed and then in the vessel body 2 via one of the Openings 7, 27 are used.

The expansion tank 15 essentially has the the shape and size of the inner container described so that it is essentially fully expanded without tension Condition so on that formed by the inner container outer boundary of the container space 3 may be present, such as described on the basis of the system of the inner container on the vessel body 2. However, in the manufacture or assembly Receiving container 15 initially outside of the vessel body 2 in its axis and as an extension to the bottom wall 5. The container 15 is on its jacket neck 17 with the Connected inside the vessel wall 5. In this outside location is the container 15 which can be slipped through the interior of the neck 17 compared to its functional position so that the functional inside 61 of its walls including the Neck 17 on its outside and its functional outsides 62 are accordingly on the inside. The outside of the vessel body 2 are lying walls of the container 15 essentially completely sealed, so that its Interior only communicates with the container space 3 and at sterile or dust-free loading of the container space 3 its side 62, which comes into contact with the medium later can be kept very clean or sterile.

The arrangement, design and connection of the walls of the Container 15 corresponds to that described with reference to the inner container Walls. The container 15 has on his associated end the hollow starting from its top wall Projection 63, which is also made in one piece from film the other walls is formed and in continuation of the Vessel wall 6 completely or up to the inside of the neck 8 to fill a discharge unit, which in the interior of the neck engages. This is essentially one complete emptying of the container 3 located Medium possible by such pressure, which is the medium increasing funding.

The container 15 can according to the inner container described method and thus also in the outer location or be produced together with the inner container, whereby the same pressure builds up in both tanks because it enclose a common space, which except for the Pressure supply opening 7 is tightly closed. Especially It is useful if the two containers partially or completely in one piece with or from the same Material are made from the material of the vessel body 2 may differ partially or completely. The one in essential cylindrical jacket neck 17 closes in one piece and via annular joint zones directly to the radial inner boundaries of the bottom of the container 15 and the Bottom wall 55, the length of the neck 17 often, e.g. 5 to 10 times smaller than its width. The rest Transitional curves between the walls of the container 15 also form ring-shaped joint zones that turn inside out allow. The partially or fully molded container 15 is removed from the container 2 after this manufacture In the end turned inside out and thereby in essentially completely transferred into the container space 3. The container 15 can also first in the outer layer a volume can be folded, which is only about the material volume of its walls or at most 2 to 3 times of which corresponds and then only through the opening 27 to the To be transferred inside the vessel wall. In both Cases is the folding or transfer by evacuation of the Container space 3 or the interior of the outside Container 15 from the opening 7 possible. Will the container 15 stretched in the transfer into the container space 3 or inverted, he can then by evacuation from the Outside of the vessel wall 5 ago, namely by the turned Neck 17 folded tightly against the bottom 5 become.

After the container 15 is completely in the container space 3, can the opening 27 with a cap-shaped cover 65th be closed, the end wall of which is on the outside of the Vessel wall 5 and its jacket wall on the outside of the Narrowing 57 of the vessel wall 4 rests so that its outer circumference aligned with that of the vessel wall 4 and in this passes almost continuously. The lid 65 can Wear control valve to fill the expansion tank 15 and form the base 37 for the discharge device 1.

1 and 2, the expansion tank 15 is in one piece with one to all vessel walls 4 to 6, 8, 52 or whose the inside of the container space 3 and / or the Formed outside of the vessel body 2 areas. The neck 17 goes here in one piece into the vessel wall 5 at their radially inner boundary, the one in Cross section approximately axially angled and exclusively after forms externally projecting, annularly closed extension 66, which is rounded approximately in a partial or quarter circle can be and approximately in the area of this transition 67 steady or gradation-free from the wall thickness of the Wall 5 in the much smaller wall thickness of the container 15 or the neck 17 decreases. The latter The smallest wall thickness can be 1 to 3 times larger the thickness of the wall 5 corresponding distance from the outside of this wall 5 or even between the levels the two sides of the wall 5 can be reached. About in the middle between its ends forms the neck 17 Inverted articulation zone, around which it is folded in two layers can be, so that its two layers of partially different Thick at the end of the shoulder 66 an annular fold Form edge 68. This and approach 66 will be then completely covered by the cover 65 to the outside. The cover 65 has the inlet opening Filling of the expansion tank 15 in the jacket and / or in its end wall on, forming from the bottom wall 5 of an annular cavity can have a distance.

The continuous one-piece unit according to Fig. 1 can e.g. from a blank 64 or one-piece preform according to FIG. 2 are produced, the elongated cup or sleeve-shaped here is designed as a molded plastic part. Of the Blank 64 already has the preformed or finished shape Opening 7 'delimiting neck flange 52' or neck 8 'and these are then zones 6 ', 4', 5 'for the vessel walls 6, 4, 5 on. These wall zones 4 'to 6' can approximately same thickness, compared to the finished walls 4d to 6d reduced thickness and / or approximately the same interior or Have outside width and merge into each other without gradation. The bottom 15 'of the molding 64 closes in cross section continuously to the wall zone 5 'and is to the outside dome-shaped or hemispherical dome-shaped, whereby he compared to the respective zone 5 'to 6', 8 'is less Can have wall thickness, which is advantageous continuously in the wall thickness of zone 5 'passes over.

After manufacture, the molding 64 can be completed without Solidification cooling or still in the production associated plastically deformable state, in a blow mold which are transferred using the inner container described properties. If necessary, under again The zones are supplied by heat and pressure 4 'to 8', 52 'with stretching and plastic deformation in transferred the finished container shape according to FIG. 1. In doing so the zones mentioned stretched almost exclusively axially and an internal mold is not required. The zone too 15 'is in one of the inverted forms of the container 15 corresponding mold space of the outer mold, wherein this zone 15 'due to the internal pressure and without an internal mold stretched both axially and radially plastically so much is that the very thin forming the container 15 Foil wall arises, which via the transition 67 to the Vessel body 2 connects. Both containers 2, 15 are thus manufactured in one operation at the same time, after which a return suction flow to the channel supplying the forming pressure medium can be generated by which in the outer location molded container 15 through opening 27 into the container space 3 sucked in with folding and formation of the everted edge 68 becomes. This process can also be done in a separate operation or after removing the assembly from the mold or after cooling or solidification.

If the discharge unit to be inserted into the neck 8, such as a thrust piston pump, one projecting freely into the container space 3 Has housing approach, the container 15 can also have a corresponding pocket-shaped recess 69, which this housing approach essentially free of gaps records. The receptacle 69 goes from the annular end wall of the projection 63 in one piece and can either according Fig. 1 can be slipped over to the functional position or instead, in the form state in the interior of the outer layer located container 15 also protrude outwards, so that not to be put over to the functional position needs.

In a further advantageous procedure, the in the container space 3 slipped or transferred container 15 e.g. by applying an internal pressure from the neck 17 or the opening 27 forth in the manner described above placed on the inside of the container space 3 so that there are no voids between it and the inside there is no air or the like. Now that can Customs medium from the opening 7 through a gradient, overpressure and / or vacuum promotion between the above Walls filled without bubbles, the container 15 retreats in parallel with the increasing filling volume or is reduced by folding. That in the out; equal container 15 located medium can be against one Escape the excess pressure limiter through the neck 17, the medium is expediently compressible or gaseous. When the filling channel is connected to the Opening 7 can also promote the medium by suction into the container space 3, namely e.g. through evacuation of the container 15 from the neck 17. In any case the container 15 only folded with the filling, so that possibly by this fold on its outside forming and completely enclosed cavities Foreign medium, but can only contain the filling medium.

Due to the training described are no separate Seals required. The sealing of the media room in the Area of the walls 5, 55 and the opening 27 takes place through the transition in the area of the connection of the neck 17 to the bottom walls 5, 55. The sealing of a lid or a discharge unit in the area of the opening 7 can through a front ring provided on the inner container, which has appropriate sealing properties.

The respective container can also be partially or completely be produced in the extrusion or blowing process so that as the medium present or as the pressure medium carbon monoxide or a gas with similar properties is provided. The container and the inner container are then made of a double-walled tubular preform made together, taking simultaneously the container 15 is manufactured in the outer position. Of the Preform is open at both ends and has its length has approximately constant cross sections. He can have a width that corresponds to the first and second pipe socket, which in the finished vessel body 2 only from the facing away from each other of the walls 5, 6 after protrude on the outside and almost coaxially in the Center axis of the vessel body 2 lie. On the inner circumference of the the second neck is the first neck of the receptacle or the associated preform, while in correspondingly on the nozzle 21, the other end of this Preform or the second neck is fixed. The first Neck can have an opening for the introduction of the shaping Pressure medium, for filling the container space 3 and / or Attachment of a discharge device for the medium or form a removable closure. But this can also be done laterally offset next to the second nozzle also over the wall 6 to the outside and only from this Wall 6 outgoing additional neck are formed, which forms the discharge opening and also up to its End of the inner container is lined.

After the shaping, this lining part closes the Discharge opening with an end wall, but this can be through Cutting, pricking or the like can be opened in a simple manner. On the finished vessel body there are the same-sized sockets much narrower than the vessel wall 4. If the discharge opening is used for the media discharge, here is the receiving containers transferred from its outer position into the container space 15 essentially only in the area of the top wall 6 fixed so that it increases with increasing emptying of the Expands service medium towards the bottom wall 5. The the Bottom wall 5 associated wall of the container 15 and the Inner container can also be welded to the bottom 5 or this container can be unpaved from the top wall 6 hang freely against the floor 5. On the outside is the Wall 5 or 6 expediently with a lid of the above Kind covered, which also the one or the associated Covers. The one going through the first neck Compensating passage is on the same side of the Container space 3 as the discharge opening and immediately next to this.

The necks of the substantially tubular receptacle can be fixed to the nozzle with fastenings be that the main section of the Container 15 is not fixed in the container space 3, this however tightly sealed to the outside in the area of the connecting piece is. It can be a projection that fills the additional neck be provided according to projection 63, here no separate Inner lining must be provided. By evacuation of the second room area, the receptacle is in a Functional starting position transferred, in which also the lead can be tightly folded. The container is located then in the manner of an elongated and over his Extent of the medium completely washed between the strands End walls of the vessel without contact in the container space. From this state, the container can be radial and expand axially in all directions until it is fully in place lies against the vessel walls.

Control means can also be provided for this in the expansion tank 15 located medium as a function or Active medium e.g. so that it is pressurized, Discharge or the like. The discharge behavior or the discharge properties the discharge device 1 is affected. E.g. can be the air in the container 15 or another Medium immediately before and / or after the outlet opening Medium coming from the room area 12 and this supplied so atomized finer outside of the device 1 into one foamed state transferred or in the case of an atomized flowing, bundled beam discharge with the supplied Medium to be enforced. When compressing the vessel wall 4, the container 15 over the incompressible, in Medium 12 located in space area 12 is also pressurized, if he is not in direct contact with the Vessel walls of the vessel body 2 stands. This will Container 15 located, compressible medium under pressure set and simultaneously with the supply of the service medium fed to the discharge nozzle via an outlet channel of this nozzle and mixed with the process medium. After the pump is released close the valves and in the container 15 is about that Control valve sucked in air from the outside again.

The discharge device according to the invention works in everyone Location, e.g. lying, upside down or upright Normal position. It also enables in an advantageous manner preservation-free product storage of the process medium. The outlet valve can also be designed as a metering valve, so that e.g. through the valve stroke, which is applied per actuation Amount of medium is precisely determined.

Claims (3)

1. Method for the manufacture of a discharge device (1), in which wall zones (4' to 8', 15') of at least one container blank (64) is produced for the formation of a container body with two containers (2, 15) with significantly differing wall thicknesses or strengths, namely a vessel body (2) and a reception container (15), with a blow mould as the external mould and without an internal mould, accompanied by the supply of heat and pressure through plastic deformation and stretching the finished container shape is obtained and a transition (67) is produced between the containers (2, 15), characterized in that the reception container (15) is produced by plastic deformation in the manner of a lining as an image of the internal shape of the vessel body (2) and that the reception container (15) is connected via the transition (67) to the vessel body (2).
2. Method according to claim 1, characterized in that the reception container (15) is produced by shaping against the inside of the vessel body (2) provided as the external container, that in particular the reception container (15) is fixed to the vessel body (2) by folding, such as gathering, of the said vessel body (2) and that preferably, from the double-walled container blank, both containers are jointly produced accompanied by shape stretching.
3. Method according to claim 1 or 2, characterized in that the reception container (15) is produced with a neck (17) passing via an attachment (66) of the transition (67) in one piece into a vessel wall (5) of the vessel body (2), that the reception container (15) is constricted, particularly on transforming into a use shape and that the reception container is fixed to the vessel body, preferably with two fastenings and between the same a main portion of the reception container (15f) is left unfastened and is brought by folding into the use shape.

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