DE10257324B4 - Production of coatings or bowls of chocolate or similar fat masses - Google Patents

Abstract

method
a. for the production of chocolate-based or chocolate-like mass-coated food products or hollow bodies, bowls or half-shells consisting of such masses in a product form,
b. wherein after completion of coating, pouring or pouring in a stall-off or pouring device
c. Excess chocolate, mass, effluent, shaken or spun from the food product or product form
d. intercepted and
e. is then tempered so
f. that the chocolate or mass can be returned to the coating, pouring or pouring device and used there again for coating, pouring or pouring,
G. wherein the chocolate or chocolate-like mass to be processed is first pre-pre-crystallized and
H. highly stable seed crystals with about 0.05-0.2% crystal content per total mass are used in the form of the polymorphic β (VI) form of the fats used,
i. wherein the thus pre-crystallized chocolate or mass of the coating, pouring or pouring device supplied and as long as in a closed circuit of the ...

Description

The The invention relates to a method according to feature a of claim 1 and a device for execution of the procedure.

State of the art

When coating of edible products with chocolates and chocolate-like ones Conventionally, these compounds are masses in the temperature range of about 29 ° C (typical Milk chocolate) to 31 ° C (typical Dark chocolate) on the surface to be covered Applied product. The usually well-flowable masses flow by gravity over the property to be covered and at the Edges over the Side surfaces off. As a rule, the to be covered Gutstücke guided on a sieve belt, so that the product flowing chocolate mass through the sieve can drain as far as possible. To support the drainage process as well as for adjustment evenly thick coating layers The said screen belt becomes common set in vibratory motion. The thus additionally acting inertial forces allow both the equalization the on the surface to be covered Good adhering chocolate mass, as well as shaking off excess coating composition. To also the floor area to be covered Good to coat accordingly, the screen belt with the on it located Gutstücken usually in a subsequent step by a filled with coating mass trough moved so continuously that through the screen belt coating composition the bottom part of the to be covered Good achieved, lapped and coated with it as well.

at the production of in a later process step with special filling materials to be filled Hollow bodies, Bowls or half-shells of chocolate or chocolate-like Masses, corresponding shell shapes are first completely poured out and after partial solidification of a wall-near mass layer, the mold is turned through 180 °. The insufficiently solidified mass flows by the influence of gravity out of form. The shape with the remaining in this wall layer is then an intermediate cooling subjected, with the chocolate shell solidifies.

The from the stall or Schalengiessprozess drained or shaken chocolate mass, which up to approx. 70-80% the total potted mass can be experienced by the Contact with opposite the melt temperature cooler Ambient air a progressive crystallization. This leads to Continuous thickening of the mass during the coating or Schalengiessprozesses. A direct return of this partially thickened chocolate mass to the coating / pouring device would constipation problems cause and also due to the progressive crystallization increasing consistency and thus permanent increase in coating thickness for the coated ones or poured products. Furthermore, this would not be consistent To achieve crystallization state and thus no defined Solidification behavior in the cooling tunnel reachable. Furthermore, the achievement of a glossy product surface as well a crisp fracture behavior of the quality and consistency of pre-crystallization dependent.

The conventional solution for the described problems in the introduction of excess mass from overcoats or casting process in a so-called decrystallizer. This usually corresponds to a heat exchanger, in which sufficiently high temperatures of about 45-55 ° C set to completely melt the fat crystals present in the mass. After that, the mass is in the conventional Process again fed to a tempering machine, in this one again preferably to set defined pre-crystallization state and the like pretreated mass then turn the coating / Vergießvorrichtung redirect.

From the DE 11 89 369 A For example, a chocolate tempering machine is known in which spent chocolate is replaced by supplying 40 ° C hot chocolate, the chocolate being tempered in two water-cooled cylinders downstream of a stirred kettle. Tempered return mass should not be thickened and mixed with fresh chocolate. In a method of repeatedly using chocolate according to DE 23 09 822 C3 liquid chocolate is briefly exposed to a high shear rate before a coating process.

Description of the invention

It the object of the invention is a process for the production of coatings or Bowls of chocolate or similar To develop fat masses, compared to the state of the art requires less energy.

The The object is solved with the features of claim 1. advantageous Embodiments are the subject of the dependent claims.

A Another object of the invention is to provide a device for execution of the procedure.

These The object is solved with the features of claim 11.

essential A feature of the invention is that the excess mass from the coating / Vergiessprozess not complete anymore decrystallized and then crystallized again, but in a defined pre-crystallized state in a closed Circuit in the coating / pouring device remains until it is used up. This will result in significant energy cost savings possible, up to 80% of the mass, which in particular in shell casting processes incurred in such a high amount, no longer a decrystallization and must be subjected to recrystallization again.

This is according to the invention achieved by the fact that the processed chocolate or chocolate-like Crowds first can be pre-crystallized, these masses certain highly stable Seed crystals are added, which the polymorphic β (VI) form for the typical fats used in chocolates such. B. the cocoa butter or cocoa butter-containing fat blends.

To Precrystallization of the masses in this way becomes the overdrawing / potting apparatus fed. The effluent from the product or from the product form or effluent or shaken off or thrown off mass is in a collection container or Collecting trough collected, this according to the invention on a Wall temperature is maintained, which allows the mass in advance inoculated or mass produced supercritical β (VI) fatty crystal fraction and at the same time during the coating or pouring process z. B. by local, temporary Cooling off the Mass formed, less refractory crystal fractions (z. B. in particular fat crystals of the β (V) form) as far as possible melt. Thereafter, these predominantly β (VI) fatty germ crystals containing mass over a tempered pipe, which is also at wall temperature of the collection container, or possibly slightly below (about 2-3 °) is held by means of a Conveying device directly in the stall or pouring device continuously or batchwise returned to this mass there again for coating or pouring directly to use.

Further advantages and possible applications of the invention will become apparent from the following description with reference to the 1 to 6 , in which

the 1 to 2 an embodiment of the inventive method and the inventive device in a shell / half-shell casting process (assigned item numbers: 1 to 26 )

the 3 to 5 the execution of the inventive method and the inventive device in a coating process (assigned item numbers: 27 - 53 ) and

6 show a temperature profile

The essentially of a bulk storage tank 3 and a metering device usually provided with nozzles 5 existing coating / pouring device doses the coating composition 4 . 6 either in forms 7 (Shell molding) or on the surface of products 33 (Coating process), which on a sieve belt 34 are arranged. After the filling / coating process, the forms 7 or the coated products 33 advanced.

In the shell molding process ( 1 - 2 ), after a certain residence time, which depends on the temperature conditions of the environment under which the molds are transported, they are as indicated in pos. 8th shown turned to not solidified on the mold walls mass 4 into a mass catcher 12 pour off. The only with a partially solid wall layer 10 filled form 9 is moved into a cooling tunnel for intercooling. The usually designed as a trough mass catch tank 12 has as a discharge aid for the mass, for example, a screw element 13 , which supplies the mass of an outlet opening, where this by means of a positive displacement pump 17 sucked in and then through the return pipeline 19 . 21 in the bulk storage tank 3 the coating / Vergießvorrichtung is directly fed back. The mass catcher 12 is with a double wall 18 provided by means of a tempering, the at position 25 fed to the double wall and at 26 is subtracted, experiences an exact temperature. The discharge aid (screw element 13 ) is by means of a motor 11 driven. The mass recirculation / return pipe may preferably consist of two sections 19 and 21 to open up the possibility for certain litigation via a three-way valve 20 Mass from the collecting container 14 to other places, eg. B. pump for the purpose of other processing. Also the 19 . 21 has a temperature-controllable double wall 18 . 22 , which by means of a tempering fluid, for. B. entering at Pos. 25 and exiting at pos. 26 (preferred countercurrent flow of the tempering) is tempered. The earth reservoir 3 The coating / casting device is usually a double-walled, tempered Zuführrohrieitung 1 newly seeded with β (VI) seed crystals seeded with a mass flow which replaces the spent mass.

The earth will be in the bulk storage tank 3 also kept at a certain temperature via a tempered double wall. The tempering fluid circuits for bulk reservoir 3 , Mass catcher 12 , Return pipeline 19 . 21 and feed pipe 1 are separately adjustable and adjustable.

During the coating process ( 3 - 5 ) becomes the mass 32 after dosing on the product pieces to be coated 33 Partially drain from the product or by additional vibration movements of the screen belt 34 partly shaken off the product. This excess mass is in a mass catcher 40 collected. This can additionally surplus mass from a Überziehprozessabschnitt 38 for the floor area 35b of the product pieces 33 via a supply line 37 be supplied. The direct return of the mass catcher 40 collected mass 43 takes place analogously to the handling in the shell casting process by means of discharge aid 41 , driven by a motor M, through an outlet opening in the mass collection container 40 sucked via a positive displacement pump 45 , pumped through the tempered pipe parts 47 and 49 until the exit of the return pipeline 28 in the bulk storage tank of the puller 29 , A replacement of the consumed mass via the tempered supply pipe 27 by means of freshly seeded with β (VI) crystal nuclei 53 ,

The condition of the treated mass 4 learns from position 30 in the bulk storage tank 3 via pos. 7 , and 8th in the mold 7 . 9 or position 35a for coatings to position 15 respectively. 43 in the mass collection container and the Pos. 18 . 22 and 2 respectively. 46 . 50 and 28 in the return pipeline a in 6 exemplary, qualitatively shown temperature profile. Depending on this temperature curve and the residence times at certain temperatures, a certain proportion of solidified fatty crystal fractions of the polymorphic β (VI) and β (V) crystal forms sets in the mass. β (VI) corresponds to the highly thermally stable crystal form with which the chocolate or chocolate-like mass processed in the process according to the invention was inoculated beforehand with about 0.05-0.2% crystal content per total mass via the metered addition of a fatty suspension containing these crystals. 6 shows the temporal or local course of the temperatures in the main parts of the coat / Vergießvorrichtung, in the diagram left beginning in the last part of the return pipe or parallel in the feed pipe before the entry of the mass in the mass reservoir of the stall / Vergiessvorrichtung. In the 6 By way of example, for a chocolate with a mixture of cocoa butter and other fats as the fat component described temperatures in the feed pipe about 32-34 ° C, preferably 33 ° C and in the return pipe about 30-32 ° C, preferably 31.5 ° C. In the 6 In the first part of the device, where the feed pipe and the return pipe are shown as running parallel over a short distance, the proportions of the two considered crystalline forms β (VI) and β (V) are to be understood in principle as the respective sums of these crystal fractions. As shown qualitatively, there is no significant change in the dominant β (VI) crystal content and a clearly negligible β (V) in the supply and return piping as well as in the bulk storage tank maintained at 32-33 ° C., preferably at 32 ° C. Crystal fraction (drawing in 6 not to scale). As soon as the mass is processed (in a mold or on a coating body) a generally significant increase in the β (V) crystal fraction begins due to the mass cooling (cooler environment), which leads to an increase in the viscosity of the mass. According to the invention, the temperature in the bulk catch container becomes clear up to approximately 36.5 ° C. (maximum temperature at the container wall, with reduced average or minimum local temperature (cf. 6 ), there is a rapid melting of the, in the model shown here chocolate only to a maximum of about 30-31 ° C detectable existing β (V) -Keimkristalle. Thus, upon further maintenance of the mass in the return pipe in the temperature range of about 31-32 ° C, the β (V) -Kristallanteil disappear again as far as possible. The β (VI) seed crystals are melted even in the strong heating in the mass catch tank only to a small extent in direct contact with the heated vessel wall. Thus, at the end of the return pipeline a negligible proportion of β (V) and a virtually constant proportion of β (VI), with setting the temperatures according to the invention comparable to the present in the freshly supplied mass β (VI) content present. Thus, the mixture of fresh mass and recirculation mass or alone the recirculation mass can be fed in an identical manner more times in the coating / Vergiessprozess.

1

supply pipe

3

Mass storage container

4

coating composition

5

metering

6

coating composition

7

shape

8th

position

9

shape

10

solidified wall layer

11

engine

12

Mass receptacle

13

screw element

14

receptacle

15

position

17

displacement

18

double wall

19

Return pipe

20

Three-way valve

21

Return pipe

22

double wall

26

position

27

tempered supply pipe

28

Return pipe

29

Coater

30

position

32

Dimensions

33

Products / product pieces

34

screen belt

35a

position

35b

floor area

37

supply

38

Enrobing process section

40

Mass receptacle

41

discharge aid

43

Dimensions

45

displacement pump

46

position

47

Pipe part

49

Pipe part

50

position

51

Dimensions

53

impfkristallisierte Dimensions

M

engine

Claims (11)

method a. for making chocolate or chocolate-like masses coated Food products or consisting of such masses hollow bodies, shells or half-shells in a product form, b. wherein after coating, Casting or pouring in a stalling or pouring device c. excess, from Food product or effluent flowing out of the product form, abgerüttelte or spun chocolate or mass d. intercepted and e. is then tempered so f. that the chocolate or Mass into the stall, or casting device traceable and there again for covering, Casting or pouring is directly usable, G. being the too processing chocolate or chocolate-like pulp first pre-pre-crystallized and H. to highly stable seed crystals with about 0.05-0.2% crystal content per total mass in the form of the polymorphic β (VI) form the fats used are used i. the so precrystallized Chocolate or Measures of Plating, Outfeed or pouring device supplied and as long as in a closed circuit of the stall, Aus- or Vergiessvorrichtung remains until it is used up, j. taking the chocolate or the mass at a temperature of 2-4 ° C below the melting temperature refractory β (V) fat crystals being held, k. so there is no significant change of the β (VI) crystal portion and a negligible β (VI) crystal portion is produced. Method according to claim 1, characterized in that that after coating, Pour or shed excess chocolate or mass is collected in a collecting device on a wall temperature is maintained, which allows the chocolate or mass premixed or produced in the chocolate or mass refractory To obtain fat crystal fractions largely and at the same time when coating, or casting resulting less refractory Kristallfaktionen melt off again, and then the chocolate or mass over one tempered pipeline, into the stall, Return or pouring device. Method according to claim 1 or 2, characterized that the return of the Chocolate or mass is done continuously. Method according to one of claims 1 to 3, characterized that returning the chocolate or mass is batchwise. Method according to one of claims 1 to 4, characterized in that the from the collecting device in a mass storage container ( 3 ) the coating, pouring or pouring device returned chocolate or mass with the mass storage container ( 3 ) also continuously supplied fresh mass flow combined and mixed. Method according to one of claims 1 to 5, characterized in that the mass storage container ( 3 ) continuously metered fresh mass flow is such that the consumed for coating, pouring or pouring chocolate or mass is replaced. Method according to one of claims 1 to 6, characterized that the temperatures of the chocolate or mass when tempered Recycle held the same value as the temperature when collecting the mass becomes. Method according to one of claims 1 to 7, characterized in that the temperature in a Masserückführleitung between the collecting device and the mass storage container ( 3 ) the coating, pouring or pouring device is set at 2-4 ° C below the wall temperature of the collecting device. Method according to one of claims 1 to 8, characterized in that the chocolate or mass pre-seeded seed crystals, which are to be largely retained when heating the excess chocolate or mass in the collecting device, were prepared based on cocoa butter. Method according to one of claims 1 to 9, characterized in that when treating the chocolates or chocolate-like masses which contain germs, the adjustment of the wall temperatures in the collecting device and in the return line to the mass storage container ( 3 ) of the coating, pouring or pouring device according to a relevant for these chocolates or masses measured by differential thermal analysis melting temperature spectrum seed nuclei used is such that the seed crystals produced with this fat or fat mixing system are not largely melted, while in the production in the excess chocolate or mass formed crystals with reduced thermal stability and corresponding to lower temperatures shifted melting temperature spectrum are largely melted. Device for the production of chocolate or chocolate-like masses coated food products for execution A method according to any one of the preceding claims, wherein she a plush, Aus- or Vergiessvorrichtung having a temperature-controlled Collecting device for collecting excess chocolate or mass connected, in turn, with a temperature-controlled feedback device connected to the return promotion the excess chocolate or earth to bulk reservoir the overcoat, Pouring or pouring device to allow, wherein the return device has a heatable pipe.