DE102006010312A1 - Use of an injection molding compounder for the production of foodstuffs or semi-finished foodstuffs - Google Patents

Abstract

The invention relates to the use of an injection molding compounder with an extruder as a mixing and homogenizing unit, an injection unit which is connected to the extruder and receives the mixed and homogenized material therefrom, and a clamping unit in which at least one molding tool can be arranged or arranged, whereby the mixed homogenized material can be transferred from the injection unit into one or more cavities of the molding tool for the production of foods or semi-finished foods.

Description

The The present invention relates to the use of an injection molding compounder for the Production of food or semi-finished food, a Such method according to the preamble of claim 17 and a system according to the preambles of claims 27, 27 and 29.

When Food semi-finished products are generally still a food end product to understand further processed intermediate products.

Of the Injection Molding, as used herein, at least consists of one Extruder, which serves as a mixing and homogenizing unit, a dosing unit, in particular an injection unit connected to the extruder and from this gets the mixed and homogenized material and one Closing unit in which at least one molding tool is arranged or can be arranged, wherein the mixed homogenized material from the injection unit in one or more cavities of the mold is convertible.

So far be with the injection molding compounder exclusively Plastic moldings produced. This is a plastic starting material supplied to the extruder and in the extruder by the introduction of shear and under supply of Heat in one transferred plastic melt, the then further processed by injection molding. The extruder However, not only does melting work, but it already serves in the manufacture of plastic products, the incorporation of additional Materials in the plastic raw material (compounding). there can other plastic materials, dye additions, fiber additions, such as Glass fibers or natural fibers or other fillers of all kinds are attached. This extra Substances are due to the mixing property of the extruder, in particular a co-rotating twin-screw extruder, in the plastic matrix evenly incorporated, so that a homogeneous material or meltdown results. Typically, these plastic material melts in the temperature range between 150 and 380 ° C (For example, low temperature LDPE and PEEK im high temperature range).

To the plastic melt is made from the extruder into an injection unit - often also called shot-pot - transferred. Of the Injection unit is the material mixture with high pressure in the cavity a mold injected, which in a closing unit is included. In the mold, the thermoplastic material hardens by cooling out, so that afterwards can be removed in a solid state.

One completely different area compared to the processing of plastic material is the food sector where food or semi-finished foods for human and animal are processed and manufactured. In the large-scale Production of food or semi-finished food corresponding food raw materials according to a recipe often in a mixing or kneading device processed to a homogeneous mass or a homogeneous bed, then afterwards in a separate and separate processing step into a product or a semi-finished product is transferred. As far as known, it is also possible to provide a kind of mixer, which is a material for a product continuously which then by division and further processing in a finished product or a semi-finished product is transferred.

It However, it has been difficult in some food areas exposed, desired produce three-dimensional shaped food products. mostly These are presses or casting molds used. In molds is a material filled, which hardens and after curing one of the mold has corresponding contour. When using presses will open a product that is mostly on a flat surface, a stamp applied, so that a contour in the surface of the Memorizes product. In most cases however, is the back of the Product plan designed so that this way only bad a 360 ° design form train.

at the production of hollow chocolate products, such as chocolate St. Nicholas or chocolate Easter Bunny, It is also known to pour the base material into a hollow mold and the Shape afterwards to pan and turn. The material is stored in a specific Thickness on the wall of the mold and hardens. After opening the Form is then formed a corresponding product.

task The present invention is a plant in the food industry available too provide a particularly efficient way of producing allows three-dimensionally shaped shapes.

These The object is achieved by the use mentioned in claim 1, by the method recited in claim 17 and by the method described in claims 27, 28 and 29 mentioned plant solved.

Tests have been carried out which have shown that the injection molding compounder, which is known per se for the plastics sector, also has a surprising result in the foodstuffs sector can be turned, in particular for the production of sculptural, three-dimensional products.

at the use of an injection molding compounder for the Production of foodstuffs or semi-finished foods can be the various properties and advantages of such a system be used optimally depending on the process step.

So the extruder, in particular a multi-shaft, preferably a simultaneously rotating twin-screw extruder, now not for melting a plastic matrix but for mixing and homogenizing over one feed added materials. As a feeder unit can for example, a simple funnel, a metering device for a or several materials, a pusher or another mixing or Kneading chosen be like this later will be explained.

The Starting material or the mixture of starting materials can the Extruder already in the catchment area or via other material feed points downwards supplied to the catchment area become. For this purpose, the extruder screws are to be designed accordingly. It is also possible not only feed openings to be provided in the extruder. It can Also, as known in extruder technology, degassing be formed, so that an undesirable water content - for example, by a vacuum degassing - reduced can be.

At the Output of the extruder is the supplied material in a fully mixed Mold, preferably in a plastic or doughable mass in front. Can do this according to liquid substances, Emulsifiers or other food additives are buried. Is the starting material complete? mixed and homogenized, it is cycle by cycle of an injection unit fed. These Injection unit may take the form of a shot pot, ie a piston-cylinder unit, be educated. Naturally are also other types of training for such an injection unit possible.

in the Food sector could It will prove to be beneficial and important, the first-in / first-out Principle to implement in the injector, i. the injector form so that the first filled material also first in transferred the cavity and the last filled in the injector material also at the end into the cavity is introduced.

Also It may be interesting to see a material leakage (continuous rinse) along the injection piston as well as the buffer tank wanted in purchase to take or controlled to allow too long residence times of a material, resulting in decomposition and bacterial Carry loads can. In this context, preferably, a construction for the Plasticizing and injection device to choose, which is a good cleaning option guaranteed for example, a flushing option with a cleaning agent. moreover can the individual components (including covers) in stainless steel or a be executed other stainless material, a material which has proven itself in an excellent way in the food industry and easy to clean. Ever is in the food sector on hygiene a special emphasis too lay. The cleaning possibilities are great Importance. That's why it can be important, one certain amount of parts in stainless steel or with the stainless Material to perform. Also, it may be important for to provide the individual parts with special cleaning positions, in which are the extruder, the injector, the mold but also housing parts clean well.

The Injection unit has the function, the mixed starting material one or more cavities to feed in a mold. For this purpose, the material from the injection unit via an injection nozzle in the Mold injected. The mold can be used as a multicavity tool be formed so that it contains a variety of Kavitätsräumen.

Ideally is the mold, or at least one mold half, tempered designed so that heating and / or cooling in suitable or desired Way allows is. The requirements are usually not to be considered as high as in the processing of plastic melt. In the present case also simpler Cold and Tempering units are sufficient.

Also must be the closing unit In the food industry usually can not withstand the pressures, like this in the plastics processing area is the case. It therefore likes possible be, the closing units to be dimensioned smaller. In some cases it may also be possible closing units to be used as they are used in polyurethane processing. According to one particularly preferred embodiment may possibly also a self-locking mold used be, so that on a frame possibly omitted can be.

Also, it is of course not necessary in the food industry to make the tool from a tool steel. It may also be possible to use plastics for the mold. So it is known from the household sector to use silicone molds for baking.

Also otherwise you can take over applications from the polyurethane processing area. So can the injection molding compounder be integrated into a rotary table or oval system in which one Row of in closing units arranged forming tools from station to station rotate. A Station can be a heating cabinet or an oven in which the products are baked. A another station may be a cleaning device in which the Molds are cleaned. Again a station can take the form of a Be implemented pretreatment, with the example a coating, such as a glaze, or the incorporation of materials like fruits is carried out. Naturally are also other stations such as a removal device, etc. conceivable. In such a rotary table or oval system, the molds For example, cyclically filled with inlaid, then the Filled / injected with food stuff, subsequently a heat treatment takes place and / or an aftertreatment, then the products are removed and the tool cleaned, whereupon the cycle can be restarted.

The Mold tool can be like a baking oven at a corresponding operation be operated so that the material introduced in a certain Duration is baked. Is it necessary to increase the volume increase, so can while of the baking process the mold will be driven more or less far.

To the required waiting time can Mold open and the products are taken.

of course is it readily possible also other methods known per se in injection molding on the food sector for the production of food or semi-finished foodstuffs. So it is possible between the Extruder and the injection unit to provide a storage device, even with a discontinuously operating injection unit to operate the extruder continuously. During the injection operation the injection unit will be provided by the extruder Material cached in this storage unit and can subsequently be transferred back to the injection unit. This storage unit can be both separately between the extruder and the injection unit provided as well as integrated in the extruder be.

of course is it is possible successively introducing several different materials into the cavity whereby a multi-layered injection molding process in the manner of a multi-component Product can be produced. So it is possible, for example, a Product with an outer material first To form kind and an inner core material of the second kind.

Also Is it possible, a kind of WIT process (Water Injection Technology) or GIT process (Gas Inject Technology). In this case could after the first partial filling a cavity with a material component, for example air are blown, whereby the material component is pressed against the wall of the cavity. So could readily hollow objects such as chocolate products are produced. After a cooling can These products are relatively quickly removed from a Mehrfachkavität become.

Instead of Of course, the introduction of air can also be a food liquid be introduced in the same way that previously in the cavity partially filled Pressing material against the wall of the cavity. The product thus produced is then filled in with the appropriate liquid / mass or also hollow if the liquid or the mass is removed again.

Instead of a gas or a liquid can also be another component in the interior of the first component introduced according to the known sandwich method during injection molding become. The second component can also be used with a propellant be provided (for example, baking powder) to the product by puffing the Form propellant.

Should the extruder not a material mixture, but already a dough supplied be in a hopper poorly funded is so could in this area a stuffer or an automatic feeder be provided. The automatic feeder could turn as well as a mixing and conveying device be educated. Such devices are also known from the prior Technology for the plastic application known.

Of course you can too closure side Devices as known in plastics technology used become. So it is possible between two platens a turning plate, a sandwich plate or to arrange an index plate. Besides, it is possible to to provide the platens with rotary tables or sliding tables.

Of course, a plurality of extruder and injectors or even material supply to the cavities of the mold may be present, so that a multi-component processing is readily possible. Moreover, it is of course often useful to associate a handling device of the closing unit, which introduces, for example, before introducing the material from the injection unit into the cavity, an insert part in a part of the cavity, the cavity is acted upon by a means or takes a finished product from the cavity. For example, the insert part could be an element of a package or a food to be added to the product, such as a fruit (eg, a nut).

The use according to the invention as well as the method according to the invention are in the subclaims Are defined.

following becomes an embodiment a use according to the invention an injection molding compounder in several variants with reference to the accompanying drawings explained in more detail. The Drawings show in

1 a schematic representation of an injection molding compounder for use according to the invention,

2 a first modified embodiment compared 1 in a detailed view,

3 a second modified embodiment of 1 in a detailed view,

4 a third modified embodiment according to 1 in a detailed view,

5 a fourth modified embodiment opposite 1 in a detail and

6 a change in the catchment area opposite 1 in a detailed view.

In 1 Fig. 1 is a schematic representation of an injection molding compounder used in a trial for the production of dog food compressed in a dog bone mold. The injection molding compounder comprises a mixing unit 10 , the present two in a mixing cylinder 12 recorded mixing screws 14 includes. The mixing unit 10 thus has a great similarity with a co-rotating twin-screw extruder, the screws are designed to process the corresponding material suitable. The pitch and the depth of the screw depend of course on the material to be processed.

The mixing unit has a hopper 16 in the catchment area, over which the food raw material or the food mixture in a metered manner of the mixing unit 10 be supplied.

Furthermore, downstream of the hopper 16 another feed opening 18 represented by the other food or food additives can be added. Preferably, at such downstream positions, substances are mixed in which react sensitively to a corresponding mixing treatment. Substances such as liquids can also be added to the mixture through an injection valve in the cylinder of the extruder. Of course, the mixing screws 14 form at these positions such that no material from the feed opening 18 can swell out. For this purpose, just before reaching the feed opening 18 Damping elements may be arranged in the region of the further feed opening 18 lead to a pressure reduction.

The two mixing screws 14 are about a rotary drive, in particular an electric motor 20 rotatably driven. At the outlet end of the mixing unit 12 is a material line 22 provided in the mixing unit 10 produced material mixture of a storage device 24 supplies.

The storage device 24 has a storage tank 26 in which a piston 28 movable back and forth. This creates a receiving space into which the material from the mixing unit 10 over the line 22 can be introduced. The piston 28 is about a drive 30 moveable executed. This drive 30 is presently designed as a hydraulic drive, wherein in two different Wirkräume the drive hydraulic lines 32 ' and 32 '' lead, which with a switching valve 34 are connected. The changeover valve 34 is in turn with a pump 40 on the one hand and a container 36 connected on the other hand, and depending on the switching position the drive 30 apply in the desired manner.

Alternatively, the drive can also be formed electrically, for example with a motor and a spindle nut combination. Of course, other drive options for the storage device 24 conceivable. From the storage tank 26 leads another line 56 to the injector 42 , To during the injection process, pushing back the material from the region of the injector 42 in the storage tank 26 to prevent is in the lead 56 a shut-off valve 58 intended.

The injector 42 essentially comprises an injection cylinder 44 in the injection piston 48 slidably guided back and forth. The injection piston 48 is about a drive 50 acted upon, which in turn is acted upon hydraulically. For this purpose, two hydraulic lines open 52 ' and 52 '' in corresponding pressure chambers of the drive 50 , The hydraulic lines 52 ' and 52 '' are on the other hand with a further switching valve 54 connected, which is also to the pump 40 as well as to the container 36 extends. Depending on the switching position of the valve 54 can the injection piston 48 be moved in the desired way forward or backward.

From the injection cylinder 44 leads an injection nozzle 60 to a mold 74 . 76 , This can be done via the injector 60 that in the injection volume of the injector 42 recorded material are injected into the cavities of the mold. In the present case is the injection nozzle 60 provided with a further shut-off valve, so that an unintended material outlet from the nozzle can be avoided.

The molding tool, in which several cavities are arranged in the present case (multicavity tool), consists of two mold halves 74 and 76 , The mold half 74 is on a fixed platen 70 and the mold half 76 on a movable platen 72 attached. The movable platen 72 can (with a drive, not shown) are moved back and forth, so that the mold is openable and closable. In the mold half 76 are also tempering channels 78 trained, by which the tool can be tempered in a desired manner. Thus, it is possible to guide appropriately tempered water through these channels, wherein the connections for the temperature control channels are not shown here in detail.

In the mold half 74 are - indicated by dashed lines - the conduction paths represented, over which the material from the injection volume 46 be transferred into the different cavities.

The functioning of the injection molding compounder for use in the food industry is thus clear. In the funnel 16 In the filling area, a food mixture for a product to be produced is introduced. This food mixture is intimately mixed and homogenized on the way through the mixing unit and enters the line in a plastic manner at the end of the mixing unit 22 from which they are in the storage unit 24 is transferred.

Is the valve 58 closed, the storage unit picks up the material and stores it between. As soon as the valve 58 opened, the material can be removed from the storage unit 24 into the injector 42 be transferred, the piston 48 with the filling of the injector 42 is withdrawn. Is in the injection volume 46 accumulated a required amount of material, so will the valve 58 closed and the valve 62 open. Then that's in the injection volume 46 collected material through the channels in the mold half 74 transferred into the cavities of the closed mold. The cavities are held by tempering at a constant level, so that a baking of the product can take place to a certain extent. Subsequently, the mold is opened, and the products can be removed.

These Procedure is already in the production of bone-shaped chews for dogs has been tested and has proven to be excellent.

Compared to previous ones Procedure could be over here now the entire 360 ° product range a desired one Design be realized. Moreover, can driven with a single plant the entire manufacturing process , adding the source components at the beginning and am End when opening the closing unit can take the finished product.

In the 2 to 5 are different variations of the basis 1 described device shown.

So it is possible on the storage device 24 of the 1 to renounce. On the one hand, of course, the mixing unit can also be operated discontinuously and cyclically, so that they only when filling the injector 42 Material mixes and enhances. Is the injector located 42 in injection mode, this is the valve 58 closed and the mixing unit 10 stopped.

In 2 an embodiment is shown in which the storage possibility is realized in the outlet side region of the mixing unit itself. The mixing screws 82 have at least two different sections of flights. The flights with the reference number 84 designated section A serve the normal mixing and homogenization. The flights with the reference number 86 designated section B are made deeper, so that there is closed valve 58 The material can back up, which then after opening the valve 58 can be transferred to the injection device. However, you can not save a lot of material in this way.

Also in 3 shown storage device 94 is in the mixing unit of mixing cylinder 90 and twin screws 92 integrated. Here is a storage tank 96 with a storage volume in the end region of the extruder connected to the interior, wherein a piston 98 by a drive 100 can be back and pre-proceedings. Is the valve 58 locked, so will the piston 98 moved back and the material can from the extruder to the storage device 94 be transferred. With the valve open 58 becomes the piston 98 move it downwards, leaving it in the storage volume 96 stored material back pressed back into the extruder and from there into the injector 42 is transferred.

In 4 is a detail in a detail on the outlet side of the injector 42 shown. In the area of the injection nozzle 60 namely opens a feed line 108 , which in the further course of a valve 106 and with a pump 104 connected is. The pump 104 conveys material from a container 102 and press this through the feed line 108 into the injector 60 , In this way, an additional material, which in 4 in the container 102 is added depending on the operation of the pump at a desired time in the cavity. This material may be a gas, a liquid, or other plastic food material, so as desired to produce a product with an additional component of material in the cavity.

So can by the use of air as gas, the known GIT process (Gas Injection Technology) find use, whereby the one cavity partially filling Material to the cavity wall depressed is, so that a total hollow product can be produced. Also let yourself in this way with a the WIT (Water Injection Technology) analogous a product with a food liquid or even a viscous mass fill.

Of course, in this way different food components can be mixed together. So it is possible, instead of the combination of pump 104 and containers 102 to provide another mixing and injection unit, which then into the nozzle 60 opens, so that different materials can be injected at different times in the cavity in the manner of a multi-component injection method.

In 5 is schematically a switching unit 112 in an injection valve 112 shown that access from either the injector 42 or the additional feed line 110 opens, allowing for the introduction of the injection device as required for a desired product 42 or via the feed-in line 110 into the cavities is possible.

Another variation of the injection molding from 1 is in the detail view in 6 shown. Here, in the filling area as an alternative to the hopper, a so-called automatic feeding device is provided which consists of a rotating hopper 126 and a rotary driven snail 128 (Drive 130 ) is realized. This automatic feeding device also has mixing and kneading function, wherein plastic and dough-shaped materials in a well-defined manner of the mixing unit of mixing cylinder 120 and mixing screws 122 can be supplied. In this device according to 6 is also a batch feeding a dough in the mixing and filling device 124 possible, which then continuously to the mixing unit 120 . 122 is transferred.

All in all can be with the use of a known Spritzgießcompounders for the In a simple way, you can create completely 3D-designed products in one go.

10

mixing unit

12

mixing cylinder

14

augers

16

hopper

18

Further feed

20

rotary drive

22

second Material pipe section

24

memory device

26

storage container

28

piston the storage device

30

drive the storage device

32 ', 32' '

hydraulic lines

34

Valve for drive the storage device

36

hydraulic reservoir

38

hydraulic line to the pump

40

pump

42

Injector

44

Injection cylinder

46

Injection volume

48

Injection piston

50

drive for the Injection piston

52 ', 52' '

hydraulic lines

54

Valve for drive the injection device

56

second Material pipe section

58

shut-off valve

60

injection

62

shut-off valve

70

firm platen

72

portable platen

74

First tool half

76

Second tool half

78

Temperature control channels in the second tool half

80

mixing cylinder according to second embodiment

82

augers according to second embodiment

84

section with usual thread depth

86

section with greater gangway

90

mixing cylinder according to third embodiment

92

augers according to third embodiment

94

memory device at the mixing device

96

storage volume

98

accumulator piston

100

memory drive

102

Gas- or liquid container

104

pump

106

Valve

108

feeder

110

feeder

112

switchable injection nozzle device

120

mixing cylinder

122

mixing screw

124

mixing and filling device

126

funnel

128

mixing screw

130

drive for mixing screw

Claims (35)

Using an injection molding compounder with - one Extruder as mixing and homogenizing unit, - one Dosing unit, in particular an injection unit, with the Extruder is connected and mixed and homogenized by this Material receives and - one Closing unit in which at least one molding tool is arranged or can be arranged, wherein the mixed homogenized material from the dosing unit, in particular the injection unit in one or more cavities of the Mold is convertible, to Production of food or semi-finished foods. Use according to claim 1, characterized that as extruder a multi-screw extruder, in particular a twin-screw extruder, preferably a co-rotating twin-screw extruder provided is. Use according to claim 1 or 2, characterized that downstream in the end of the extruder or the extruder a storage unit is provided for receiving material. Use according to claim 3, characterized that the storage unit as a separate device between the extruder and the injection unit is provided. Use according to claim 3, characterized that the storage unit by an appropriate training of Schneckenenden is formed, such that in the end the mixing unit can accumulate the material. Use according to claim 3, characterized the memory unit is located in front of the output end of the Extruder is located, allowing material from the extruder into the storage unit and can be returned from the storage unit to the extruder. Use according to one of claims 1 to 6, characterized that in terms of flow the injection unit an injection nozzle for the transfer of the food material is provided in the tool and that the injection nozzle with a Device for introducing gas or liquid connected or connectable is. Use according to one of claims 1 to 6, characterized that in terms of flow the injection unit an injection nozzle for the transfer of the material into the tool is provided and that the injection nozzle with a device for Introducing another mass connected or connectable. Use according to one of claims 7 or 8, characterized that the injector is formed switchable, such that either the material from the injector or the material from the other Device for introducing a gas, a liquid or another mass is connected. Use according to one of the preceding claims, characterized characterized in that in the filling area the extruder provided a separate mixing and conveying device is. Use according to claim 10, characterized that the mixing and conveying device for Processing of dough material is suitably chosen. Use according to one of the preceding claims, characterized in that in the mold a tempering device is arranged, with which the cavity or cavities cool or heated are formed. Use according to claim 12, characterized that the temperature control device for producing a cavity temperature from 50 to 150 ° C is trained. Use according to one of the preceding claims, characterized in that the closing unit has a turning plate arranged between the two clamping plates, such that two forming tools are arranged in the closing unit bar, wherein the injection unit is associated with a mold. Use according to claim 14, characterized that the other mold of the closing unit associated with a further material feeding device is. Use according to one of the preceding claims, characterized in that at least one handling device is provided is, with the one insert part before filling a cavity in this can be inserted and / or with a finished product can be removed. Use according to one of the preceding claims, characterized marked that in addition to the tempering of the tool an electrical surface heating installed for variothermic operation of the tool along with the mold half is. Process for the preparation of food or Food semi-finished using an injection molding compounder according to claims 1 to 17 characterized, that food base and / or Additives are added to the extruder so that the food and additives in the extruder mixed together and homogenized become, that the mixture is transferred from the extruder to an injection device, that the mixture is transferred from the injection device into one or more cavities, that the material in the cavities exposed to a temperature range corresponding to the products will and that the products thus produced are removed from the cavities become. Method according to claim 18, characterized that the extruder in other filling areas downstream of the first filling area lie, additional food substances are added. Method according to claim 17 or 18, characterized that in the extruder a vent is provided over the moisture is removed from the material. Method according to one of claims 18 to 20, characterized that first a part of the cavity is filled with a matrix from the injector and in a second process step, a gas, a liquid or another food material according to the GIT or the WIT method in the cavity is introduced. Method according to one of Claims 18 to 21, characterized that the temperature in the cavity set according to a given temperature profile or is adjusted. Method according to one of claims 18 to 22, characterized that before introducing material from the injection unit in the cavity or the cavities an insert material into the cavity is introduced. Method according to claim 23, characterized it is the insert material to a food material or a packaging material. Method according to one of the preceding claims 18 to 23, characterized in that a liquid via a nozzle or a diffusible material is introduced in the channel region to the flowability of the processing mass to increase. Method according to one of the preceding claims 18 to 24, characterized in that injected into an open mold and the mass afterwards stamped becomes. Plant for the production of food or Food semi-finished comprising An extruder as a mixing and homogenizer unit, - one Dosing unit, in particular an injection unit, with the Extruder is connected and mixed and homogenized by this Material receives and - one Closing unit in which at least one molding tool is arranged or can be arranged, wherein the mixed homogenized material from the injection unit in one or more cavities the mold is convertible, thereby in that at least 10 percent by weight, preferably 30 Weight percent, especially 50 weight percent stainless steel consists. Plant for the production of food or semi-finished foodstuffs comprising - an extruder as mixing and homogenizing unit, - a dosing unit, in particular an injection unit, which is connected to the extruder and receives therefrom the mixed and homogenized material, and - a closing unit, in which at least one mold is arranged or can be arranged, wherein the mixed homogenized material can be transferred from the injection unit into one or more cavities of the mold, characterized in that that at least 10 percent by weight, preferably 30 percent by weight, in particular 50 percent by weight, consists of a non-corrosive, food-grade material. Plant for the production of food or Food semi-finished comprising An extruder as a mixing and homogenizer unit, - one Dosing unit, in particular an injection unit, with the Extruder is connected and mixed and homogenized by this Material receives and - at least a closing unit, in which at least one mold is arranged or can be arranged, wherein the mixed homogenized material from the injection unit in one or more cavities of the Mold is convertible, thereby in on a round table or oval plant a row of closing units are arranged in the cyclically a food mass for shaping, Curing or baking is introduced. Plant according to claim 29, characterized that at least a warming cabinet or an oven integrated into the rotary table or oval system provided is in which the closing units are introduced cycle by cycle. Installation according to one of Claims 29 or 30, characterized that a cleaning device in the rotary table or oval installation is provided integrated, in which the molds are cleanable. Installation according to one of Claims 29 to 31, characterized that pre-treatment station integrated into the rotary table or oval system is provided, in which the molds pretreatable, coatable or fillable are. Installation according to one of Claims 29 to 31, characterized that the mold is made of a plastic material. Installation according to one of Claims 29 to 31, characterized that the molding tools are self-locking. Installation according to one of Claims 29 to 31, characterized that the individual coming into contact with the food material Parts in special cleaning positions for safe removal of Impurities can be brought.