ES2348669T3 - IMPROVED COATING PROCESS IN DRUM. - Google Patents

Abstract

Process for making grafted products, formed by a core and a non-hygroscopic coating, preferably a sugar-free coating comprising at least one layer, preferably two or more, up to a large number of layers, which is applied to the core, preparing as a medium of coating a solution or suspension of one or more polyols, and in a process stage a) applying this coating means to the core in order to form a layer and then in a process stage b) sprinkling with one or more polyols in powder and then in a process step c) drying with air at 20 ° C-80 ° C, the amount of polyol or polyols in powder being from 30% to 75% by weight (with respect to the total solids content of the polyol or polyols in the coating), preferably from 40% to 75% by weight (based on the total solids content of the polyol or polyols in the coating), in particular from 50% to 60% by weight (based on the total solids content of the polyol or polyols in the coating), being optionally possible to repeat steps a), b) and c) two or more times alternately, preferably 5 to 50 times, specifically 20 to 40 times, where the polyol or polyols is / are xylitol, erythritol, Mannitol, 1,1-GPM (1-O- &945; -D-glucopyranosyl D-mannitol), 1,6-GPS (6-O- &945; -D-glucopyranosyl-D-sorbitol), 1,1GPS ( 1-O- &945; -D-glucopyranosyl-D-sorbitol) or mixtures thereof and the polyol or polyols added for dusting has / have a particle size distribution of 90% <50 µm.

Description

The present invention relates to a drum coating process and products coated by said process.

In drum coating or dragee technology There are a variety of processes, such as hard coatings (with or without powder addition), soft (always with the addition of a large amount of powder), in solution (with or without addition of powder) and in suspension (with or without the addition of dust).

Drum lining processes are operations extremely long that usually develop according to the order following: a) introduction of the coating medium, b) distribution, c) optional powder addition and d) drying. These stages are repeated frequently (80-120 times) and in this way layers are formed on the material covered by the coating. In the course of this operation changes occur in the quantities applied, in the distribution times, in the number of cycles and in the drying times of each phase.

On the part of the expert operator there is the concern of obtaining a good product in a short time. In spite of it, until the date no significant acceleration of the process has been achieved.

How to carry out repeated evaporations of water and avoid at the same time that the coated material adheres to itself and / or the device, cannot be sprayed arbitrarily

mind large amounts of solution or suspension on said material. Therefore the duration of the operations of Coating is long and uneconomic.

WO-A-03/000068 discloses a drum coating method for making sugar-free chewing gum by means of use of a syrup and in which the chewing gum cores are sprinkle with maltitol powder.

The Lycoat process (patent EP 0 625 311 B1) is a procedure that tries to avoid these disadvantages, in which use the maltitol polyol.

In a corporate text (The World of Ingredients, October 1999, page 59) this innovative process is compared to the current process This text refers to a time reduction from 3 hours and 30 minutes to 2 hours and 30 minutes. The comparison was carried out on a Dumoulin TVV 600 recording drum, with 5 kg of centers.

The coating time required when repeating the Lycoat process in a Driacoater DRC 500/600 Vario with 7.5 kg of Centers was 3 hours and 19 minutes.

WO 00/38532 describes the addition of isomalt powder, using an amount of 0.23 kg x 15 = 3.45 kg in the case of example A or 8.1 kg in the case of syrup 7 of example 3; that is 7.8% or 17.3%, respectively, of the total amount of isomalt.

A drawback of the two previous teachings is that the surfaces of the products covered by these two processes are rugged and that the candy colored dragees

they are stained and / or it is not possible to adequately lower the

coating times.

WO 00/38532 describes a maximum reduction of time from 3 hours 33 minutes to 2 hours 27 minutes, in others words a saving of 1 hour and 6 minutes or 31%, which It refers only to the concrete coating operation.

A considerable disadvantage of the process described in the WO 00/38532 patent is the use of two different syrups. In In the case of a new plant, this means higher costs of investment and a more complicated and susceptible production of mistakes.

Thus, both for economic and technical reasons, There is an urgent need to produce a smooth, crunchy and easily colored, coated product in the shortest possible time and with minimal costs and difficulties. to storage, whose lining does not tend to absorb atmospheric humidity

The present invention provides a process according to the claim 1, specifically a process for making dragee products, especially without sugar, formed by a core, for example without sugar, and a non-hygroscopic coating - preferably free of sugar - consisting of at least one, preferably two or more, layer (s), according to the which is prepared a coating medium that carries one or more polyols and then in a first stage a) said medium is apply, in particular partially, on the core and then in a second stage b) one or more dry polyols are applied in powder on the coated core, in particular the dragees,

that is, the coated cores are sprinkled with a can

comparatively large unit of one or more powdered polyols, Next comes a third stage c) drying, from 20 ° C to 80 ° C, and in an embodiment particularly preferred the sequence of the process consisting in the application of the coating medium, followed by the application, in concrete dusting one or more polyols powder, and dried at 20 ° C to 80 ° C, preferably from 25 ° C to 50 ° C, it can be done more than once, in particular from 10 to 50 times, preferably 20 to 40 times. According to this invention a coating medium comprising a solution or suspension of one or more polyols, applies to a core and sprinkled with large amounts of one or more powdered polyols and the layer obtained is dried, being possible repeat this process sequence, specifically, for example, 10 to 50 times, preferably 20 to 40 times. The present invention provides a process like the above, in which the amount of one or more powdered polyols used to sprinkle the coated layer or layers is 30% up 75% by weight, preferably from 30% to 60% by weight, in particular from 50% to 60% by weight, referred to in each case to the total solids content of all polyols of the coating, that is to say in all layers. In a form of particularly preferred execution the amount of one or more Powdered polyols used to sprinkle the layer or layers Coated is 30, 35, 40, 45, 50, 55, 60, 65 or 70% up to 75% by weight, especially from 35% to 75% by weight, more preferably from 40% to 75% by weight and over

all of 45%, specifically from 50% to 75% by weight, refe

In each case, the total solids content of all coating polyols, that is to say in the sum of all layers.

In another particularly preferred embodiment, the The amount of one or more powdered polyols used to sprinkle the coated layer or layers is 30, in particular from 40 to 45, 50, 55, 60 or 70% by weight and especially 40 to 55% by weight referred in each case to the total content in solids of all coating polyols, that is in The sum of all layers.

In a particularly preferred embodiment, the stages a), b) and c) above are carried out successively, in particular according to the order marked. In another form of execution preferred of the present invention steps a), b) and c) are perform simultaneously. In another preferred embodiment of the present invention, the stages a) and b) followed by stage c). In another preferred embodiment of the present invention steps a) and c) They are done simultaneously. In another preferred embodiment of the present invention they are carried out simultaneously stages a) and c) followed by stage b). It is also possible to perform stage a) first and then stages b) and c) simultaneously. Of course it is also possible to make a

or more times stage a) and then once stage b), followed one or more times stage a) and so on.

According to a particularly preferred embodiment the core of the grageate product is a core, center or soul

chewing gum hadilla However, as you can see, in the

core choice also come into consideration a nut, hard or soft candies, hard or soft snacks, others sweets, a tablet, a tablet or any other product liable to be drank, for example a food for animals, a solid that contains pesticides, a solid that contain herbicides, a catalyst, laundry detergent, etc. In a particularly preferred embodiment these cores may be composed of free ingredients of sugar, for example sugar alcohols such as isomalt, maltitol, xylitol, erythritol, mannitol, sorbitol, GS isomalt or contain any one of these compounds.

A particularly preferred embodiment establishes that the amount of polyol, or two or more polyols, in powder used to sprinkle 30% to 60% by weight, in particular 50% to 60% by weight, preferably 30, 35, 40, 45, 50, 55, 60, 65 or 70% to 75% by weight, in particular 40%, more preferably 45% or 50% up to 75% in weight (referred in each case to the total solids content of the total amount of polyol applied to the core, that is, in the sum of all layers). In another particularly preferred embodiment, the amount of one or more polyols in powder used to sprinkle the coated layer or layers it is 30, specifically 40 to 45, 50, 55, 60 or 70% by weight and more preferably from 40 to 55% by weight, referred to in each case to the total solids content of all polyols applied in the coating, that is, in the sum of all the layers

The process of the present invention comprises the preparation

portion of a recording medium, that is, of a solution or suspension, for example, a mixture of a dissolved polyol and, if appropriate, an undissolved polyol (also called suspended component) at elevated temperature, preferably from 25 ° C to 90 ° C, more preferably from 40 to 80 ° C per example, especially from 45 to 55 ° C, and, after the application and distribution phase on the core to be coated, the dusting of the coated core, using substantially amounts large of a finely divided powdered polyol. Besides, the drying air temperature is higher than in the processes standard. The frequency of addition and the amount of powder are adapt as usual to the corresponding polyol.

In this process surprisingly products are obtained hard, smooth, easily colored and crispy, in combination with an extremely fast layer build-up. The The present invention therefore provides dredged products. hard using a kind of "soft coating process", that is, a dragee product that has a hard coating and crispy. The products of the present invention also are improved with respect to the technical status, as far as that have an excellent life time, that is, a better storage stability

It is also surprising that despite the high temperature of the drying air, preferred according to the present invention, in particular from 20 to 80 ° C, preferably from 25 up to 50ºC, in the case of chewing gum, the heat-sensitive centers (approximate softening temperature 30 ° C) remain dimensionally stable.

In a particularly preferred embodiment of the present invention the air temperature of drying, preferably for a short period of time, at the end of the coating process.

The percentage fraction of the powdered polyol added, preferably> 50% with respect to the total solids content of All polyols applied in the lining, is up to triple the proportion used in WO 00/38532 (example 3) and almost seven times the one used in example A of WO 00/38532, whereby the process results extraordinarily economical

The time savings in the process of the present invention amount to up to 53% (compared to example 3 of the WO 00/38532), and even up to 68% in comparison with example A: in other words, in those cases in which to date a coating operation could be performed, now two or three can be performed in the same space of time.

That supposes an extraordinarily great advantage over the previous technical state.

Detailed Description of the Process

In a preferred embodiment the centers that go to be coated, they are introduced in a recording drum and, given the case, first they are released from the adhered powder, stirring and eliminating it by aspiration of the air.

The coating medium, ie the coating solution or suspension, is prepared by dissolving the polyol a

high temperature without leaving rest and adding other ingredients

Optional teas such as gum arabic, a modifying compound of the viscosity and / or surface tension of the coating medium, dye, aroma, active substances, substances pharmaceuticals, intensive sweeteners, nutraceuticals, dental mineralization agents and the like. In addition, if necessary, the polyol fraction considered as part is added member of a suspension.

In a preferred embodiment of the present invention the solids content of the coating medium is from 30% to 90%, in particular from 50% to 70%, preferably from 55% to 60%.

This coating solution or suspension is stirred at high temperature, for example from 25 ° C to 90 ° C, in particular from 40 ° C to 80 ° C, preferably from 45 ° C to 55 ° C. In a particularly preferred embodiment, the means of coating is applied specifically by spraying, by example in the form of a spray or atomized beam and / or preferably in portions, on the cores or agitated centers.

After the application phases, specifically of spraying, in a particularly preferred embodiment of the present invention, the dusting polyol is spread evenly over the agitated centers, it being possible to increase the amounts in the course of the operation until total the amount mentioned above, for example 30% to 75%, in particular from 30% to 60%, more preferably 50 to 60%, specifically 30, 35, 40, 45, 50, 55, 60, 65

or 70% to 75% by weight, in particular 35% to 75% of the polyol

used and applied in the global operation of dragee. In other

especially preferred embodiment the amount of one or more powdered polyols used to sprinkle the layer or Coated layers is specifically from 40 to 45, 50, 55, 60 or 70% by weight and more preferably 40 to 55% by weight, referred in each case to the total solids content of all the polyols applied in the coating, that is, in the sum of all layers.

This amount is much larger than in the processes described to date. As a component of the dusting powder added in the course of this process, it can be used an anti-caking compound, a fluidity enhancer or an anti-caking agent together with the polyol.

Since in a particularly preferred embodiment of the present invention the temperature of the coating medium is increased to more than 40 ° C, in particular to more than 50 ° C, preferably up to more than 55 ° C, and than in other especially preferred embodiment of the present invention the temperature of the drying air is at the same level, large amounts of solids can be applied per unit of time to the grafted material; at the same time as result of the addition of powder, a quickly applied large amount of solids on the centers.

Advantageously, in a preferred embodiment the amount of liquid coating medium applied and / or the applied amount of powder is successively increased in the course of the process

In the present invention the polyol, particularly the

non-hygroscopic polyol used, it can be a sugar-alcohol

or a sugar substitute, in particular an alcohol-disaccharide, more preferably a non-hygroscopic alcohol disaccharide.

The non-hygroscopic polyol used can be for example 1,6-GPS (6-O-α-D-glucopyranosyl-D-sorbitol), 1,1-GPM (1-O-αD-glucopyranosyl-D-mannitol), isomalt , ST isomalt, GS isomalt, LM isomalt, erythritol, mannitol or mixtures thereof. In the present invention, 1,1-GPS (1-O-α-D-glucopyranosyl-D-sorbitol) or xylitol polyol can also be used as polyol. In the context of the present invention a hygroscopic sugar-alcohol is, for example, sorbitol, which in a preferred embodiment of the present invention is not used in the coating medium and also in the form of dry powder, preferably it is not is in the product coating, preferably not in an amount of 5.0% or more, in particular not in an amount of 1.0% or more (with respect to the total solids content used in the coating).

Thus, in a preferred embodiment of the present invention the polyol used is isomalt, that is to say a almost equimolecular mixture of 1,6-GPS and 1,1-GPM preferably formed by 43 to 57% of 1,6-GPS and 57 to 43% of 1,1-GPM. In another preferred embodiment of the present invention the polyol can be a mixture 1,6-GPS and 1,1-GPM along with others polyols, for example with 1,1-GPS. These mixtures are described for example in EP 0 625 578 B1.

In another more preferred embodiment of the present invention are used mixtures enriched with 1,6-GPS that carry 1,6-GPS and 1,1-GPM, specifically those mixtures formed by

more than 57 to 99% of 1,6-GPS and less than 47 to 1% of 1,1-GPM.

Therefore an example is the GS isomalt, which is a mixture of 75 to 80% (w / w) of 1,6-GPS and 25 to 20% (w / w) of 1,1-GPM. In Another preferred embodiment of the present invention is they use mixtures enriched with 1,1-GPM, which consist preferably more than 57 to 99% of 1,1-GPM and less than 47 to 1% of 1,6-GPS. These mixtures are described for example in patent DE 195 32 396 C2 (all data in% which Listed in this exhibit are% by weight, unless otherwise indicated).

In a particularly preferred embodiment of the present invention the only polyol, particularly sugar- alcohol, used in the coating medium or as a powder in the dredging process, specifically in the coating, It is a polyol chosen from the group consisting of 1,1-GPM, 1,6-GPS, Isomalt, ST isomalt, GS isomalt, LM isomalt, xylitol or mixtures of them. Thus, the present invention does not provide for use of other polyols, specifically no other sugars are used- alcohols in the coating medium or powder, on all in the lining of the product. In a particularly preferred embodiment, the polyol, in particular the sugar alcohol chosen from the group consisting of 1,6-GPS, 1,1-GPM, 1,1-GPS, isomalt, ST isomalt, GS isomalt, LM isomalt and xylitol is not only the only polyol used in the middle of coating and powder form, especially in the coating, but also the only sweetening agent used in the coating and powder form, especially in the coating, in particular it is the only edulco agent

rante that in addition to the sweet taste gives body to the product or to the

coating. In another preferred embodiment the polyol powder used in the coating process is the only one substance used in the powder, that is, the powder consists only of the polyol used.

Although sugar-free products are preferred, sugars such as isomaltulose can also be used in the coating, as a substitute for "polyol" or in addition to the polyol. By both in the present invention the term polyol also comprises isomaltulose. In another preferred embodiment The term polyol refers to sugar alcohols, excluding All sugars such as isomaltulose.

However, in a particularly preferred embodiment, the present invention provides a dredging process that produces coatings free of hygroscopic substances, in sorbitol free concrete. In another preferred embodiment, the process of the present invention and the coatings resulting from its use are free of hygroscopic substances of a different nature from sugars, such as sorbitol, and free of mannitol or starch hydrolyzate hydrogenated or mixtures thereof. Therefore in a preferred embodiment of the present invention the Coatings are free of sorbitol, hydrolyzate hydrogenated starch or mixtures thereof, and also of binding agents and dispersants, especially they are free of any hygroscopic substance.

According to another preferred embodiment, the process and coating, preferably the global products, of the

present invention are free of sugars such as sac

pink and therefore can be called “sugar free” products and They are free of hygroscopic substances.

According to an embodiment of the present invention the polyol or polyols used in the coating medium can Be the same employees in powder form. In another form of preferred embodiment the polyol or polyols used in the medium Coating may be different from those used in powder form

The preferred particle size distribution of the powder-incorporated polyol is advantageously chosen from the range 90% <50 µm to 90% <100 µm and is for example 90% <50 µm, 90% <60 µm, 90% <70 µm, 90% <80 µm and 90% <90 µm.

In a preferred embodiment, the powder may be composed of ST-PA isomalt, ie ST isomalt with 90% of particles <50 µm, or GS-PF isomalt (of particle size: 90% <100 µm) or GS- PA, ie GS isomalt with 90% particles <50 µm.

According to a preferred embodiment of the present invention the powder used therein can also carry other additives such as aromas, dyes, substances of action pharmaceutical, dental mineralization agents, nutraceuticals, intense sweeteners, anti-caking agents, fluidity enhancers, eg SiO2, tricalcium phosphate, and / or anti-caking compounds.

In another preferred embodiment of the present invention the application is envisaged on the cores of a first group of layers with a particular composition and then

the application on the first group of layers of a second

group of layers with a different composition. For example in contrast with the first group of layers, the second group of layers may contain a dye and / or aroma and / or composition pharmaceutical and / or nutraceutical or similar. In a preferred embodiment of the present invention it is also possible, obviously, the application on the core of more than two groups of layers of different compositions, for example 3, 4, 5, 6 or more layers of different composition.

In another preferred embodiment of the present invention the polyol or sugar used for the second type of layer is chosen from the group consisting of isomaltulose, erythritol and xylitol.

As a result of the large amounts of dust added, the dredging time and the number of applications also it is much smaller, so that smooth layers can be obtained With less than 30 applications.

Surprisingly the resulting coating layer is smooth, hard and crispy.

For a similar proportion of coating the savings of time is about 50% compared to the EP 0 625 311 B1 and 35% process compared to the patent process WO 00/38532, which means that the production plant can increase the 30% -50% yield, which in the case of this production Batch means considerable cost savings.

As a result of the preferred and improved addition, according to the present invention, of the finely divided dry powder (in

as opposed to its suspension addition) the

fine crystals It is known that the isomalt is composed of 1,1-GPM and 1,6-GPS. The solids of these two substances have different behavior in aqueous solutions: in others words, the two different crystals show a markedly different behavior of dissolution and crystallization.

This means that the particle size and composition of the solid particles are different in the media. dragee liquids, depending on time and temperature.

It cannot be excluded that as a result of long times of permanence in containers and pipes, for example, as result of concentration and dilution processes, some of the crystals grow and / or some dissolve. In the process of the present invention this risk is lower, because the overall operation of dragee is much faster.

Therefore, in contrast to the previous technical state, it is not necessary to use two coating means different. In the process of the present invention it is entirely sufficient the use of a liquid coating medium, in in other words, of a solution or suspension, and of a powder with an adequate particle size distribution.

In the case of soft dragee, during operations Coating can also be applied to centers large quantities of a sugar or sugar-alcohol powder, alternating with a liquid charge. However, in contrast to the process of the present invention, neither temperature nor Drying air for soft dragee, so the final product still has 7% -10% humidity. This is also

necessary, because it is assumed that the final product of the dragee

Soft should be soft when biting. On the other hand, in the case of the soft coating only about 3-10 layers of dredged

Thus, the new process is different, both from the hard coating and the soft coating.

The specific conditions of the present process invention (nature and quantity of powder, temperature of the liquid phase and of the drying air), however, produce gravel products with a surprisingly hard surface, Crispy and smooth.

The advantageous duration of the process of the present invention is not limited only to the specific operation of dragee. (less evaporation of water), but also includes the preparation of the coating medium. How to dissolve Less polyol also saves time and costs. Unlike that the description of patent WO 00/38532, where it says:

“Sometimes the dry load can be used in hard dragee, but the amount of material in the dry load is usually very limited, and is used for a few applications during the process ”, in the process of the present invention it is dusted with a large amount of powder and in many cases during the dragee

In the hard coating the concentration solutions high, large amounts of application and rapid crystallization are considered cause of problems (agglutination; rough and irregular surfaces) (source: Technologie der Herstellung von Hart-, Weich-und Schokodragees [Technology

of the manufacture of hard, soft and chocolate dragees],

Frank Perchtold, ZDS Solingen / D at Einführung Herstelltechnologie Dragees [Introduction to manufacturing technology dragees], ZDS, October 9-13, 2000). Among the solutions proposals include: -heat or dilute the solution -dry more slowly -dilute the application solution -reduce the temperature of the centers -reduce viscosity -reduce the amount of solution per application -Long time between applications.

In the process of the present invention practically the opposite is done at all points: -the solution remains undiluted at the same temperature -drying takes place faster than usual -the means of application is and remains very concentrated -the temperature of the drying air and therefore that of the

centers really increases during the process -the viscosity is not modified -The amount per application is increased -and the drying time is much shorter than in the proce

You are standard.

As you can easily see, the process of the present invention operates largely contrary to the state previous technician.

Therefore it is quite surprising that the products clearly show the properties of a graged product

Lasted.

Another advantage of the present invention is the possibility of coating poorly formed / pressed hard candy centers

or other irregularly formed compounds, with the help of large amounts of powder, to get smooth products and uniforms Defective parts on surfaces or on edges can be polished so that these areas are uniform and smooth, which facilitates the production conditions of coated products Even solids with a certain roughness due to its elaboration can be coated according to the present invention, giving smooth and attractive products.

Thanks to the large amounts of dust used in the layer accumulation phase you can choose a temperature very high drying air, because dust will prevent over- center heating.

In a particularly preferred embodiment of the present invention the drying during the coating process can be carried out by a parallel current, also known as direct flow, that is, directing the air in the same direction as the spray system, to through the dragee bed or the dragee drum or, in another preferred embodiment of the present invention, by middle of an opposite flow, also called countercurrent, that is, by driving the air in the opposite direction to the spray system through the bed of dragees or bass drum dredger

In a particularly preferred process of the present invention the last method, that is the air flow of

dried in the opposite direction to the spray system, it

used during dry load additions, that is during the layer accumulation phase in stage b). Therefore in a particularly preferred embodiment of the present invention steps a), b) and c) can be carried out simultaneously. The countercurrent of the drying air minimizes the loss of dust

In another preferred embodiment of the present invention, the first method cited, ie the direct flow of spray jet drying air is used during the smoothing phase, that is, stage c) is performed simultaneously with stage a).

In another embodiment of the present invention the dragee and powder mixture in stage b) is still improving with the use of one or more baffles in the recording drum or in the coating drum. In another form of execution preferred of the present invention the application of the means of coating in stage a) and the application of the powder in the stage b) take place simultaneously.

To shorten the duration of the application of the means of coating and powder to the core these applications can be carried out by the simultaneous addition of both or, more preferably, by applying the powder with a certain lag after the start of the application of the liquid coating medium. In a preferred embodiment of the present invention, the application of the coating medium in step a), in particular the spray beam, should reach the cores, especially the bed of moving dragees, before the process step b), i.e. the addition of powder, so

that the wetted centers could capture the particles of powder. Another idea of the present invention is the use of a medium Low concentrated liquid coating, which can be used

5 with large amounts of dust, from the beginning of the process of coating or after the layer accumulation phase in the stage a) and b) as a single syrup or straightener.

The present invention also relates to a product which can be obtained according to any of the previous processes

10 res according to it, specifically to coated products, especially sugar-free coated products or products coated with a sugar-free coating, as per example candies, nuts, hard and soft candies, soft and hard snacks, tablets, tablets and chewing gum.

15 Other preferred embodiments are subject to secondary claims. The present invention is explained in more detail with reference to the examples and the figure. The figure shows a coating scheme according to the 20 present invention.

In the present description, in the claims and in The examples have used the following terms, abbreviations and calculation schemes:

Total amount of liquid in a solution or Coating suspension: TFA Dry substance content in TFA: DSTFA Total powder addition: TPA

Center weight (total): (T) CW Final weight of the dragee (total): (T) DEW Layer weight (total) [(T) DEW - (T) CW]: (T) LW Percent Layer Part: PLP Loss (total) of coating material (liquid and powder): TL Part of dust in the dragee layer (= amount of polyol powder compared to total solids content of the polyol in the coating): PPDL Percentage of dust in the layer of the dragee: PPPDL

(= percentage amount of polyol powder compared to total solids content of the polyol in the coating)

Legend: TFA means the total amount of solution or suspension of coating added / sprayed in all phases.

5 DSTFA means TFA without the fraction of water. TPA means the total amount of dust incorporated into the centers (wet). TCW is the mass of the centers to be coated (number of centers multiplied by the mass of a center); the CW is the

10 average mass of a center. TDEW means the mass of finished dragees (total weight of the centers plus total weight of the layers of the dragees); he DEW is the average weight of a dragee.

TLW is the weight of all pills except the weight of all the centers; the LW is the average weight of a dragee minus the average weight of a center. PLP is the ratio between the total weight of the layers and the weight

5 total of finished dragees (x 100). It also can calculate like this: PLP = number of pieces x LW x 100 / number of pieces x DEW; the percentage part of the layer can be calculated by dividing the difference between the weight of the final product and the weight of the center by the weight of the final product; this value is multi

10 ask for 100. Or taking into account a number not too much small dragees finished with the same number of centers. TL is the difference (DSTFA + TPA) -TLW; the total loss is It can be attributed to abrasion (by drying air) and to the coating of internal parts of the apparatus.

fifteen ------------------------------------------------- ----------- The PPDL is defined by the following formula 1:

image 1

and in text:

total powder added x total weight of PPDL layer [kg] = ———————————————————————————— total powder added + DS of total liquid - total loss

The percentage of dust in the layer is (formula 2):

image2

Calculation scheme (example):

In a coating process 60.00 kg were coated of centers (TCW), resulting in a weight of 90.00 kg (TDEW) of 25 final product and a total layer weight of 30.00 kg (TLW). He

33% (PLP) of the dragee is coating material.

As the addition fluid, i.e. coating medium, 58.70 kg (TFA) with 66% DS (dry substance) were used, that is 38.75 kg of dry substance (DSTFA). As powder of addition a total of 8.10 kg (TPA) was consumed. Therefore the Total amount added in the coating process is 46.85 kg of dry substance. The dust part in the layer of the dragee gives:

image 1

and the percentage of dust in the dragee layer (PPDL / TLW) * 100:

image 1

In this example the total loss (TL) of added material - which is therefore not found in the coated products is 46.85 -30.00 = 16.85 kg.

If the unavoidable losses of coating medium and powder added (because, for example, of the waste that remains in the engraving machine), of the total powder addition, 8.10 kg (TPA), and total loss Weight, 30.00 kg (TLW), results

image3

which would mean a much higher proportion of dust in the dragee layer; unavoidable losses would be attributed only to liquid additions.

In the case of zero or minor losses both values of PPPDL will correspond to the relationship

image 1

because in the previous formula 1 the TLW is equal to TPA + DSTFA.

In the example the limit is

image 1

which is the proportion of the part of dust in all the material

Coating. The following examples illustrate the presen

Invention without limiting its scope.

Example 1

4,365 kg of GS isomalt (75% of 1,6-GPS and

25% of 1,1-GPM, w / w) in 2.91 of water at 65 ° C and added

2,215 kg of ST-PF isomalt (50% of 1,6-GPS and 50% of 1,1-GPM, 10 particle size: 90% <100 µm), lowering the temperature somewhat

tura during the addition. In addition 0.41 g of rubber was added

Arabic (in the form of a 50% solution) and 50 g of TiO2 at

liquid phase. This dragee suspension was applied per inch.

Verification at 7.5 kg of chewing gum centers (in the form of a 15-dill pad). During the periods of distribution it was sprinkled

evenly a total of 2.18 kg of ST-PA isomalt (50% of

1,6-GPS and 50% 1,1-GPM, particle size: 90% <50 µm)

on the wet centers under agitation and then it

drying air passed through the bed of candies. The board Next 20 summarizes the phases and quantities applied (in form

liquid and powder).

image4

The total time of dredging (unpolished) is 69 minutes

26 cough; The coating ratio amounts to 33% of the weight Candy The product is crispy and has a surface smooth. Example 2: Driacoater DRC 500/600 Vario, 7.5 kg centers.

image5

Example 3 (comparative): Lycoat Process (The world of ingredients, 1999)

image6

In the Lycoat process, 20.0% of the total amount of

Polyol is used as a powder load.

Example 4 (comparative):

In the course of this example, example 3 of

WO 00/38532 (center weight 60 kg).

syrup 7:

Dry load syrup 8:

1 2 3 4 5 6 7 8 9 10 11 12

1st application 2nd application 3rd application 4th application 5th application 6th application 7th application 8th application 9th application 10th application 11th application 12th application 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg 0.6kg

syrup 7:

Dry load syrup 8:

13

1st application

14

2nd application

fifteen

3rd application

16

4th application

17

5th application

18

6th application

19

7th application

twenty

8th application

twenty-one

9th application

22

10th application

2. 3

11th application

24

12th application

25

13th application

26

14th application

27

15th application

28

16th application

29

17th application

30

18th application

31

13th application

32

14th application

33

15th application

3. 4

16th application

35

17th application

36

18th application

Summary: 36 applications with 38.75 kg of DS (the quantity of 38.75 kg was taken from table 1, example 3 in the page 16 of WO 00/38532) and 8.1 kg dry load, that is, 17.3% (PPPDL) of the polyols was used in the form of dry load

Example 5: Hard candy maltitol coating 7.0 kg of hard maltitol candies were coated in

a Driacoater. A liquid coating medium was used as a

5 GS isomalt solution (75% of 1,6-GPS and 25% of 1,1-GPM, p / p) from 65ºBx at 55ºC. In total, 3028 g of the solution was used, that is 1968 g of dry substance, and 2340 g of isomalt ST-PR (50% of 1,6-GPS and 50% of 1,1-GPM, particle size: <100 µm (w / w) powder. Individual dust additions

10 were: 1x300g (phase1), 6x150g (phase2), 3x180g (phase 3) and 3 x 200 g (phase 4). The coating time was 72 minutes. The calculation of the proportion of dust in the process gave 54.3%. The final product has a smooth and uniform surface. The

The proportion of layer on coated final product is 38%. Example 6: To cover 7.5 kg of pad-shaped centers

in a Vario 500/600 recorder a solution at 60 ° C of GS isomalt (75% of 1,6-GPS and 25% of 1,1-GPM, p / p) according to 20 following recipe:

55.00%

SG isomalt

4.10%

Gum arabic solution (50% d.s.)

0.05%

Acesulfam K

0.05%

Aspartame

1.00%

TiO2

39.80%

Water

100.00%

25 g

Mint Aroma

2930 g

Isomalt SG-PA (as dry load)

The overall coating time was 69 minutes, the Percent layer amount (PLP) was 36.3%. The layer is formed in 26 cycles.

The ratio of solid to liquid isomalt used was 5 2930 g / 1471 g = 1.99.

The proportion of solid isomalt in the coating material (PPPDL) is 2930 g / 4400 g = 66.6%. Dragees They have a smooth, uniform and crispy surface.

Example 7: 10 To cover 7.5 kg of pad-shaped centers in a Vario 500/600 recorder a solution at 60 ° C of GS isomalt (75% of 1,6-GPS and 25% of 1,1-GPM, p / p) according to following recipe: 55.00% Isomalta SG 4.10% Gum arabic solution (50% d.s.) 0.05% Acesulfam K 0.05% Aspartame 0.06% Apple green hue dye 40.74% Water 100.00% 2180 g Isomalt SG-PA with optionally 0.1% SiO2 (as dry load)

15 The overall coating time was 64 minutes, the Percent layer amount (PLP) was 29.0%. The layer is formed in 25 cycles.

The ratio of solid to liquid isomalt used was 2180 g / 1262 g = 1.73. The proportion of solid isomalt in the coating material (PPPDL) is 2180 g / 3442 g = 63.3%. Dragees

They have a smooth, uniform and crispy surface.

Example 8:

To cover 7.5 kg of pad-shaped centers in a Vario 500/600 recorder a solution at 60 ° C of GS isomalt (75% of 1,6-GPS and 25% of 1,1-GPM, p / p) according to

5 following recipe:

55.00% Isomalta SG 4.10% Gum arabic solution (50% d.s.) 0.05% Acesulfam K 0.05% Aspartame 0.06% Allura red 0.50% TiO2

40.24% Water 100.00% 2580 g Isomalt SG-PA with optionally 0.1%

SiO2 (as dry load)

The overall coating time was 65 minutes, the Percent layer amount (PLP) was 36.0%. The layer is formed in 23 cycles.

10 The ratio of solid to liquid isomalt used was 2580 g / 1326.7 g = 1.94.

The proportion of solid isomalt in the coating material (PPPDL) is 2580 g / 3906.6 g = 63.3%. Dragees have a smooth, uniform and crispy surface.

15 Example 9:

To cover 7.5 kg of pad-shaped centers in a Vario 500/600 recorder a solution at 60 ° C of GS isomalt (75% of 1,6-GPS and 25% of 1,1-GPM, p / p) according to following recipe:

twenty

55.00% Isomalta SG 4.10% Gum arabic solution (50% d.s.) 0.05% Acesulfam K 0.05% Aspartame 0.01% Vegex yellow dye 0.50% TiO2

40.29% Water 100.00% 2250 g Isomalt SG-PA with optionally 0.1%

SiO2 (as dry load) The overall coating time was 53 minutes, the Percent layer amount (PLP) was 30.1%. The layer is formed in 21 cycles. The ratio of solid to liquid isomalt used was 5 2250 g / 1179.3 g = 1.91. The proportion of solid isomalt in the coating material (PPPDL) is 2250 g / 3429.3 g = 65.6%. Dragees have a smooth, uniform and crispy surface. Example 10: 10 To cover 7.5 kg of pad-shaped centers in a Vario 500/600 recorder a solution at 60 ° C of GS isomalt (75% of 1,6-GPS and 25% of 1,1-GPM, p / p) according to following recipe:

55.00% Isomalta SG 4.10% Gum arabic solution (50% d.s.) 0.05% Acesulfam K 0.05% Aspartame 0.02% Natural green dye 0.50% TiO2

40.28% Water 100.00% 2250 g Isomalt SG-PA with optionally 0.1%

SiO2 (as dry load)

The overall coating time was 50 minutes, the Percent layer amount (PLP) was 30.0%. The layer is formed in 21 cycles.

The ratio of solid to liquid isomalt used was 5 2250 g / 1178.2 g = 1.91.

The proportion of solid isomalt in the coating material (PPPDL) is 2250 g / 3429.3 g = 65.6%. Dragees have a smooth, uniform and crispy surface.

Example 11:

10 In a Driacoater 1600 / 1.25 of 4 nozzles 3 were made tests with 316 kg of centers and isomalt in liquid form and solid. For a layer formation in the dragees of 33.2%, 31.1% and 28.7% the time was 110 min., 108 min. and 93 min. The amounts of powder respectively used were 52.3%,

15 46.0% and 47.9%. Example 12: Recipe

5500 g Isomalta SG

3980 g Water 410 g Arabic gum solution (50%) 100 g TiO2

5 g Aspartame 5 g Acesulfam K 12 g Curcumin 4 g Eurolake bright blue 10016 g Liquid coating medium 1680 g Isomalt SG-PA in powder form

image7

Total 3276 ml 1680 g 1801.8 g Total dry substance 3481.8 g Dust percentage 48.3% 5 In a Driacoater Vario 500/600 they were coated with isomalt 7.5 kg of pad-shaped gum centers. The tem

Perature of the coating solution was 60 ° C.

It should be noted that the amount of ingredients cited in the previous recipe (10016 g) does not correspond to the amount of fluids (3276 ml) really applied as a coating, Well, when carrying out these experiments you have to count on a significant amount of waste (inevitable losses in containers, pipes, etc.). On the contrary the amount of powder in the recipe (1680 g) corresponds exactly to the amount of powder actually applied (1680 g), since the powder is added to the dragee bed directly after weighing, without any loss

The lining plot shown in the figure shows the quantities of substances applied (coating liquid [ml], dry substance of the liquid coating [g] and powder addition [g]) in the various coating phases, as well as the temperature of the drying air and the number of coating cycles The proportion of powder in the coating is 48.3%. The coating proportion, calculated from the average weight difference, was 29.2%. The coating time (without wax polishing) was 86 minutes. A special feature is the brief heating to end of the coating process, before wax polishing.

Example 13:

In a Driacoater Vario 500/600, 7.0 kg of hazelnuts, chocolate and previously covered with gum arabic, with the following recipe:

6500 g 65.6% Isomalt SG

2980 g 30.1% Water

410 g 4.1% Gum arabic solution (50%) 10 g 0.1% Aspartame / Acesulfam K mixture (1: 1) 10 g 0.1% Tartrazine

100% 1100 g Isomalta SG-PA (powder / dry load)

The solution was maintained at 55 ° C; the powder was added with the first eleven additions, at the rate of 100 g of powder each once (11 times).

5 The coating time was 157 minutes, the addition of powder in the dragee layer was 32.1%. Because The thermal sensitivity of the centers (chocolate) the temperature of the drying air was 20 ° C. The amount of layer It was 29.1% of the final product.

10 The uniformity of the weights of 100 pieces was compared (minus 5 with the lowest weight) uncoated, coated with conventional way and coated according to this example. The weight medium of uncoated parts (coated hazelnuts of chocolate) was 2,562 g with a standard deviation 0.318 g

15 (= 11.1% relative standard deviation). The product conventionally coated with isomalt gave an average weight of 3,497 g with a standard deviation 0.400 g (= 11.4% relative standard deviation).

Dragees according to the process of the present invention 20 gave an average weight of 3,665 g with a standard deviation 0.396 g (= 10.8% relative standard deviation). This is a clear indication of the smoothing and pro mediator of the process of the present invention.

Claims (13)

 Claims  

one.

Process for making grafted products, formed by a core and a non-hygroscopic coating, preferably a sugar-free coating comprising at least one layer, preferably two or more, up to a large number of layers, which is applied to the core, preparing as a medium of coating a solution or suspension of one or more polyols, and in a process stage a) applying this coating means to the core in order to form a layer and then in a process stage b) sprinkling with one or more polyols in powder and then in a process step c) drying with air at 20 ° C-80 ° C, the amount of polyol or polyols in powder being from 30% to 75% by weight (with respect to the total solids content of the polyol or polyols in the coating), preferably from 40% to 75% by weight (based on the total solids content of the polyol or polyols in the coating), in particular from 50% to 60% by weight (based on the total solids content of the polyol or polyols in the coating), being optionally possible to repeat steps a), b) and c) two or more times alternately, preferably 5 to 50 times, specifically 20 to 40 times, where the polyol or polyols is / are xylitol, erythritol, mannitol, 1,1-GPM (1-O-α-D-glucopyranosyl D-mannitol), 1,6-GPS (6-O-α-D-glucopyranosyl-D-sorbitol), 1,1GPS (1-O- α-D-glucopyranosyl-D-sorbitol) or mixtures thereof and the polyol or polyols added for dusting has / have a particle size distribution of 90% <50 µm.

2.

The process according to claim 1, wherein the content

in solids of the coating medium is included in the range from 30% to 90%, preferably from 50% to 70%.

3.

The process according to one of claims 1 or 2, in that the polyol present in dissolved and / or suspended form and / or the polyol used for dusting is chosen from the group of alcohol-disaccharides.

Four.

The process according to any one of the claims 1 to 3, in which the polyol is isomalt, an enriched mixture with 1,6-GPS 1,1-GPM and 1,6-GPS, a mixture enriched with 1,1-GPM 1,1-GPM and 1,6-GPS or a mixture 1,1-GPM, 1,6-GPS and 1,1-GPS.

5.

The process according to any one of the claims 1 to 4, in which the temperature of the coating medium during application of the coating layer (s) is 25 ° C to 90 ° C, preferably 45 ° C to 55 °.

6.

The process according to any one of the claims 1 to 5, where the temperature of the drying air in stage c) It is from 20ºC to 80ºC.

7.

The process according to any one of the claims 1 to 6, according to which gum arabic is used, aromas, dyes, active substances, intense sweeteners, substances of Pharmaceutical action, nutraceuticals and / or dental mineralization substances in the coating.

8.

The process according to any one of the claims 1 to 7, in which after a first group of layers is applied a second group of layers of different composition, as per example a group of colored layers.

9.

The process according to claim 8, wherein the polyol of the second group of layers is isomaltulose, erythritol or xili

39 tol.

10.

The process according to any one of the claims 1 to 9, in which the powder and / or the coating medium carries a anti-caking agent, an anti-caking agent, a poten

5 powder flow regulator, in particular SiO2, and / or a compound that modifies the viscosity and / or surface tension of the coating medium. 11. A product that can be made according to one or several of claims 1 to 10. The product of claim 11, chosen from the group formed by candies, nuts, candies and hard snacks and soft, tablets, tablets and gum. 13. The product of claim 12, including an animal feed, a pesticide-containing solid, a 15 solid containing herbicides, a catalyst, a detergent of laundry or similar. 14. The product according to any one of the claims 11 to 13, which includes in its coating an anti-caking agent, a powder flow enhancer, in particular 20 SiO2, and / or a viscosity modifying compound and / or the surface tension of the coating medium.