DE3308330A1 - Process and device for forming seals in container closures - Google Patents

Abstract

A closure coating device has a rotary head (3') with a plurality of forming moulds (5), which form a quantity of plastisol which has been introduced by a plastisol injection unit (29') over the external region of the star-wheel feeder (27'), in order to form seals and in order to heat the seals to a temperature sufficient to initiate the foaming of the seals by liberation of a blowing agent in the plastisol. Then the container closures are guided through a heater (17c) emitting infrared radiation, which heater emits further heat onto the formed seals and completes the foaming. <IMAGE>

Description

description

The invention relates to a method and a device for forming seals in container closures. the Container closures are, for example, bottle closures, preferably crown caps, although the invention is also can be used for other closures, for example for so-called roll-up bottle closures.

It is known to produce seals in container closures by inserting a plastic compound into the closure (brings and this then gives the form of the seal. [Another option is to use something liquid

1b to inject plastisol into the cap, then through it to coat that it is rotated at high speed to place the plastisol on the end face of the To distribute the closure and then to flux the plastisol by applying heat.

GB-PS 1 054 383 describes a method in which a liquid plastisol introduced into the closure contains a propellant, so that the propellant releases gas, that forms gas bubbles that are simultaneously liquefied

;> ty said plastic compound gives a closed cell structure if, after the plastisol has been distributed on the end face of the closure, heat is applied by means of centrifugal forces through infrared radiation. The foamed seal formed in this way must then be

; <0 pel, which presses the seal tightly and dissipates the heat from it through contact. This ensures that the final seal has a cell structure and a precisely specified profile due to η ν foaming.

("If-iriäß the GB-PS 1 211 780 is the sealant in the form a flowable powder introduced into the closure,

ORIGINAL INSPECfED BAD ORIGINAL

that is, for example, _(preheated by infrared radiation, before it 1 of that patent specification is formed with a profiled punch. Example shows that oie fasteners are passed through a hot air oven at 240 ° C after formation at 150 C to foam the gasket. This known The process thus requires pin preheating to sinter the powder, profiling to shape the plastic seal correctly, and post-heating to foam and flux the seal when a propellant has been added.

. The GB-PS 1 109 849 describes the introduction of a sealing compound in the form of a plastisol in the closure, which is then shaped with a stamp and closed! heated to break down the propellant and flux the plastisol. The sealing compound is cnlw-ii'.T before, during or after the profile formation to a ·. Brought to a temperature sufficient to decompose the chemical blowing agent; the closure and the stamp are preheated to comparable temperatures. Is a broad temperature range from 135 ° C to -171 ⁰ C (275 ⁰ F to 340 ° F) and fU for this preheating. subsequent post-heating temperatures of 149 C to 218 C (300 F to 425 F) are required. The temperature ranges are chosen so that the plastisol is unfoamed in a non-liquid gel state before the profile formation and remains so until after the profile formation, whereupon it is subjected to reheating, for example using infrared heating .. So that the known thin central surface of the finished seal is transparent The chemical blowing agents should have a decomposition temperature above the gel temperature and below the melting temperature of the vinyl resin. The result is unity? thin, firm outer skin of fluxtom resin over- el · <u foamed outer King dor Dichtunq, w.'ihr r-nd -i.-i Ί .mn

ORIGINAL INSPECTED _{BAD 0R | G | NAL}

niii. iii-re flat area of the seal a continuation represents the same thin, firm fluxed skin that maintains its transparency.

The invention is based on the object of creating an improved seal, in particular the one with foamed Plastic seals achievable flexibility should be fully exploited. It is also the task of Invention, a compact constructed device for the production of • foamed seals of low density in container closures to accomplish.

This task is carried out with a method of the type mentioned at the beginning Art solved in that, when the plastsol is formed, it is heated to such an extent that the foaming occurs of the plastisol begins by releasing the propellant, making the seal a / part has structure.

Accordingly, the invention provides a method for forming a foamed seal in a container closure, in which a certain amount of a plastisol with a propellant is introduced into the container closure

.. _t will; the plastisol is formed at a temperature which is sufficient to set the foaming of the plastisol in motion by decomposition of the blowing agent, whereby after forming the seal has a cell structure, and finally radiant heat acts on the plastisol, inn pin to cause further foaming.

¹ jit? The invention also relates to a device for executing the above-mentioned method, which has the following: a rotary head with several forming •• c,! Ι ι ements, an anvil for receiving the "closure and a punch to form the seal in the

ORIGINAL INSPECTED BAD ORIGINAL

Closure included; means for introducing a series of closures into the rotary head so that they enter successive forming devices of the rotary head; means for supplying a predetermined amount of plastisol to each closure supplied; means for dispensing the closures from the turret after the seal has been formed; means for applying radiant heat to the closures exiting the turret; a device for heating the forming devices of the rotary head (3); and a device for regulating the temperature of the molding devices to a value between 140 C and 260 ° C, in order to ensure initiation of foaming of the plastisol, which is introduced from the plastisol Einsprit / nr se i ■ '■■ rect.

The invention also relates to a closure which is coated or with the aid of the aforementioned method of said device is produced. 20th

The invention is explained below with reference to drawings explained in more detail. Show it:

Figure 1 is a perspective view of the closure coating device;

FIG. 2 shows a plan view of a closure coating; - device similar to FIG. 1 with a modified heater for liquefaction in the second stage;
Figure 3 shows a detailed section along the .L'nie

III-III in Figure 2; and

Figure 4 is a plan view of another modified embodiment in which two Verschlußbesoh \ ~ ch relief devices, similar to those in supply don I iijnr-i.-ri 1 and 2, the same discharge conveyor on which

the heating for foaming is attached in the second stage.

ORIGINAL INSPECTED BAD ORIGINAL

^f: igur 1 shows a closure coating device 1 with a rotary head 3, a plurality of which is arranged on the exterior thereof at equal angular intervals punch 5 has for forming seals which are heated by a gas burner. 7 Another burner not shown

'heats the associated anvils, not shown, which the Hold metal closures from below when the punch 5 is lowered into the closures to form the seal.

The closures coated in this way are removed from the rotary head 3 by a dispensing star wheel 9 and closed a conveyor 11 consisting of a continuous belt, which carries the closures in FIG 2 delivery belt 19 shown. The uncoated, but pre-painted closures are the rotary head 3 by means of an input star wheel 27 'shown in FIG. 4 from a sorting device fed via a feed hopper 15 13 supplied.

While the closures from the rotary head 3 to the output star wheel 9 move to the conveyor 11 are them under a heater emitting infrared rays 17 moves through it, the radiant heat on the molded sealant releases in the closures.

Figure 2 shows a simplified top view of the fastener coating device 1; in this case the heater 17a emitting thermal radiation is directly above the conveyor device 11, which feeds the closures to one side of the dispensing belt 19 here.

Figure 3 shows a section through the infrared radiation emitting heater 17a with a quartz tube 21 in a qc ·] d-coated reflector 23 on the underside of the

·.!: ¹ housing housing '25. If necessary, several

ORIGINAL INSPECTED BAD ORIGINAL

. »■ -" ,. ■■ · '. '■ * ■■

such heater housings 25 are arranged one behind the other in order to obtain a group of radiant heating elements, by means of which, for example, a better coverage can be achieved than with a single quartz tube 21 is possible.

FIG. 4 shows a closure coating device 1 and a second closure coating device 1 'arranged next to it with a conveyor device 11 and a second conveyor 11 ', both of which feed the same delivery belt 19, which in this case passes under the heater 17c which emits heat radiation, the several arranged side by side in FIG Heater housing 25 shown, which extend over the width of the dispensing belt 19.

In the right second fastener coating apparatus shown in FIG 1 'is the outline of the Einf ü]] tri cliter Indicated by dash-dotted lines, so that the top view of the input star wheel 27 ', the second rotary head 3' and the second output star wheel 9 ″ remains undisturbed

■ - also shows that the path of the closures "along the Perimeter of the input star wheel 27c passes directly under a plastisol injection device 29 ',. the so operated so that they have a rapid succession of liquid. Releases plastisol shocks that are so coordinated "are that they are in one under the plastisol injector 29 'meet penetrating closure.

Play in the execution block i shown in FIGS. 2 and 4 must be the tight sequence of closures on the conveyor 11 or on the second conveyor 11 'change direction from 90 to a downwardly inclined ramp 31 or second ramp 31', which guides the closures onto the dispensing belt 19 and "-.ic ·

ORIGINAL INSPECTED BAD ORIGINAL

β α » *

, Λ «

- 10 -

randomly but very densely distributed on the respective side of the delivery belt 19.

In the embodiment shown in Figure 4, there is b the delivery belt 19 made of a heat-resistant chain conveyor belt. Similarly, in the embodiment according to FIG. 2, the belt of the conveying device 11 consists of one Material that is very heat resistant; it can also be a chain conveyor belt.

When the device according to FIG. 4 is in operation, the filling funnel 15 of the closure coating device 1 and the hopper of the second closure coating device 1 'with pre-painted but uncoated Closure blanks, in this case crown corks, filled. Then the sorting device 13 is switched on to sort the crown caps in quick succession, about 1000 pieces ■ per minute to feed the input star wheel 27 'of the already rotating / wide closure coating device 1'.

While the crown caps in quick succession with their crenellated rim facing up under the plastisol injector 29 ', an amount of plastisol from 180 mg to 200 mg film weight will be put into each crown cap introduced, which settles on the underside of the crown cap.

The seals are made of propellant Plästisolmassen produced. Basically these ri.istisole insist on one dispersed in a plasticizer ί '> IUr /., in which the resin is insoluble at room temperature is, which ^ but can dissolve the resin at elevated temperature. The plastisol can contain known additives such as lubricants, Contain fillers, stabilizers and pigments.

ORIGINAL INSPECTED BAD ORIGINAL

A vinyl resin plastisol is particularly suitable as a sealing compound, but also plastisols of other thermoplastic materials Resins such as polymethyl methacrylate can be used. Suitable vinyl resins are PVC, which is preferred and other vinyl chloride polymers such as copolymers of vinyl chloride and vinyl acetate as well Polyvinyl acetate, polyvinyl butyrate, polyvinyl alcohol, polyvinylidene chloride and copolymers of vinylidene chloride and an aromatic vinyl compound such as styrene.

As a plasticizer, any known monomeric plasticizer can be used which the resin at elevated temperatures solves. For vinyl resins, these are, for example, primary plasticizers such as dioctyl phthalate, di-iso-octyl phthalate, di-

^ k 2-ethyl-hexyl phthalate, didecyl phthalate, di-iso-nony] phthalate, n-hexyl azelate, di-iso-octyiazelate, di-isb-decyl phthalate, Di- (n-octyl, n-decyl) phthalate, acetyl tributylate, Di-octyl sebacate, di-iso-octyl sebacate, dihexyl adipate, Dioctyl adipate, di-iso-octyl adipate, 2-ethylhexyldi-

2Q phenyl phosphate and tricresyl phosphate. Polymeric plasticizers such as polyesters, which are derived from dibasic acids and glycols, and / or epoxidized oils can likewise be used. Secondary plasticizers such as petroleum residues commonly used as rubber plasticizers

ok can be used in addition to or as a replacement for a Part of the primary plasticizer can be used. The choice of certain plasticizers depends on the intended use the seal.

In addition to resin and plasticizer, various other additives can be added to modify the plastisol composition. These additives include fillers, for example anhydrous calcium sulfate, talc, wood flour, kieselguhr, calcium carbonate, barium sulfate, kaolin and silicon dioxide in various ways: Γοπμ, τι; ^r , li!> ili-

ORIGINAL INSPECTED BAD ORIGINAL

ο ο Uo J ου -12- **. ".. '* .." * .. ·

Sators, for example tetrasodium pyrophosphate calcium-magnesium and zinc salts of saturated and unsaturated fatty acids, organic tin complexes, epoxy resins and epoxidized fatty acid esters; Pigments, for example iron oxide _r, carbon black, 'titanium dioxide and aluminum powder; and dispersants, for example zinc resinate, lecithin, glycol stearate, propylene glycol laurate and glycerol monooleate. Lubricants, slip agents and / or mold release agents, for example hydrocarbon oils and waxes, for example vaseline, microcrystalline waxes and silicone oils can also be added.

More than one propellant can also be used. These blowing agents decompose when the plastisol is exposed to infrared radiation and lead to the formation of cells in the plastisol, so that it has better elastic properties and the film weight of the plastisol used to form the sealing element is reduced. Suitable blowing agents include azodicarbonamide, 3,3-disulfonhydrazidodiphenylsulfone, dinitrosopentamethylenetetramine, diazoaminobenzene and p_, ρ'-oxybis (benzene'-sulfonylhydrazide. The amount of the blowing agent can be 0.2 to 5% by weight based on the weight of the resin good cell formation and a solid surface can be achieved _R, when used 0.4 to 2% blowing agent in the plastisol.

\ \ _r ■

The propellant can also comprise one or more so-called kicker compositions which lower the decomposition temperature of the propellant and / or increase the decomposition rate. Such compositions may contain zinc oxide or, preferably, zinc salts of fatty acids such as zinc stearate or zinc octoate, which also, we _; indicated above, act as stabilizers.

ORIGINAL INSPECTED BAD ORIGINAL

Due to the synchronized rotation of the input star wheel 27 ', the second rotary head 3 ¹ and the second output star wheel 9 * of the second closure coating device 1', a rapid sequence of crown corks moves around the rotary head 3 'to open the die 5 shown in FIG the crown caps to be subjected to a molding. The heat that is supplied on the one hand to the end face of the metallic crown cap by placing it on the anvil, not shown

- {Ο rests, and that on the other hand of the plastisol compositions is supplied by contact with the forming surface of the lowered,. heated punch 5, increases the temperature of the plastisol at least to the point where it begins to flux and that the propellant decomposes and gas is released.

-j g is set to close the foamed seal with To form cell structure.

Then the punch 5 rises and the crown cap is

. with the molded seal on to the delivery star wheel 9 'and then to the second conveyor 11' to towards the radiant heater 17c above the delivery belt 19

• move. _;

In order to supply the seal, the heat for the first bulking or driving stage, a temperature between 140 ° C and 260 ° C, in particular from 170 ⁰ C to 240 ° C and preferably 180 C is chosen to 220 C for the plunger 5, wherein the temperature of the punch 5 can be in the order of 10 C below that of the anvil.

While the arrangement shown in Figure 4 is suitable for the case is that two connected verses flow coating devices work together to create a single 19 delivery belt with a total of 2000 closures per

og minute to take care of the unlur öv.r lloi / urig 17c hi ntiur-r li · -

ORIGINAL INSPECTED
BATH ORIGINAL

are performed, are the exemplary embodiments according to the figures 1 and 2 to be preferred for more compact systems because each closure coating apparatus 1 and 1 ', respectively, have their own Radiant heat emitting heater 17 or 17a has. As mentioned above, the one in FIG Embodiment shown, the heater 17 over the Abgabesternrad 9, in order to generate the heat for the second inflatable resp. To deliver driving stage before the coated crown caps reach the conveyor 11, and in the embodiment According to Figure 2, the heater 17a is above the conveyor 11 to ensure that the heat causes the second swelling or blowing state before the crown caps reach the dispensing belt 19.

1b The effectiveness of the method according to the invention results from the following examples:

Example I

A parabolic -INFRA-RÖD heater with two LP 360-1kW / h-

2
. . Heating pipes that have a heat output of 5 W / cm with a

Have wavelength of 1.2 micron to 2 microns and a total energy consumption of 1 kW per tube was _{movable) r} - mounted over the conveyor 11 a sealing coating device 1 shown in FIG. 3

To infrared heaters of various lengths over the conveyor To simulate 11, the heater was synchronized with the coated crown corks over different Moves ranges from 150 mm to 500 mm. For this test, the anvils of the rotary head 3 were set to 210 ° C and the stamp 5 is heated to 200.degree. The heating elements were 12.5 mm above the delivery belt 19. The specific Weight of the plastisol when injected into the crown

ORIGiNALINSPECTED
BATH ORIGINAL '

ken was 1.2 and that of the seals in the finished Crown cap is shown in Table 1, in which the value for the distance "O" indicates that the heating is switched off was.

Table 1

Moved distance, mm O 150 225 300 400 500
Specific gravity 0.9-1.0 0.77 0.73 0.66 0.62 0.61

The specific gravity values for heater lengths of 300 mm, 400 mm and 500 mm are very favorable if one Bear in mind that the amount of propellant in the plastisol mass upon decomposition of the whole. Propellant- only for a specific gravity of 0.60 was sufficient. It became. · However a slight degradation of the seal was found.

Example II

The experiment from Example I was repeated, but

the heating elements are placed 25 mm above the dispensing belt 19. All other parameters were the same as in Example I. The results are shown in Table 2.

V Table 2

Moved distance mm 0 '150 225 300 400

Specific gravity 1.0-1.06 0.85 0.72 0.75 0.68

Example III

A "WATLOW heater with an output power of 3 W /

cm at a wavelength of 3 um to 4 um were figure 2 mounted above the discharge belt 19 according to daP tr coated together with "a group Verschl se o ^r \> o-

could be turned away. The specific thoughts of poetry

ORIGINAL INSPECTED
BATH ORIGINAL

without infrared heating was about 1.0. There were two separate attempt carried out. In one experiment the radiator was moved 0.5 m, in the other experiment 1 m. With a movement of 0.5 m the final value of the specific density was reduced to 0.87, with a movement of 1 m to 0.70.

Example IV

A single parabolic INFRA-RÖD heater with two 360 rnm long tubes (LP360-1 kW / h), the infrared radiation emit with a wavelength of 1.2 to 2.um, was attached 35 mm above the conveyor 11 as shown in FIG. The tubes lay parallel to the Direction of movement of the crown caps. The specific gravity of the seals was 0.95, but 1.0 - 1.06 if no infrared radiation applied for the second driving state became.

Example V

The experiment from Example IV was repeated, but with a 360 mm long 2 kW heating tube (LP 360-2 kW / h) instead from two 1 kilowatt heaters as used in Example IV. 'The tube was again parallel to the Path of the crown corks on the conveyor 11

25 arranges.

In a first pass, the anvil temperature was 210 ° C and that of the punch 5200 ⁰ C. The specific gravity of the seal was no infrared radiation from 1.02 to 1.07 and 0.93 when the fixed heater was turned on.

In a second run with an anvil temperature of 220 ° C and a punch temperature of 210 ° C, this was specific density of the seal without heating 0.93 and with

o switched on heating 0.81. ■ ".

ORIGINAL INSPECTED BADORIQINAL

Example VI

The experiment from Example V was carried out with the same heating arrangement and the temperatures of the second run in Example V are repeated. However, the speed was up of the conveyor belt of the conveyor 11 decreased by 25%. Without infrared radiation for the second During the driving process, the specific gravity of the seal was 0.99, while it was on with the heater switched on 0.79 fell.

As shown in Example I above, there is a degradation of the seal when the heat input for the second driving process along the delivery belt 19 over

more than 300 mm is maintained. This degradation is avoided if the distance between the heater and the crown cap is increased.

So it should be ensured that the infrared radiation is not so intense for foaming, i.e. the heating is not so close to the plastisol surface and / or the intensity of the radiation is not so high that the surface of the plastisol composition begins to decompose, which leads to an impairment of the taste of the contents of such a crown cap locked. Bottle leads. It can also be advantageous to use different wavelengths of infrared radiation experiment to find out the absorption properties of the particular plastisol used and ensure optimal absorption.

In all examples, the specific gravity of the seals was measured after they were removed from the grain corks. ''
. ORIGINAL INSPECTED

. BATH ORIGINAL

- 18 - ·· »*

It should be noted that according to the invention in the To form the seal so much heat is supplied that the puffing begins as soon as the punch 5 is withdrawn will. Although it is possible to keep the heated plunger 5 at such a low temperature, for example between 140 ° C and 170 ° C to operate so that he does not have flatulence,

. · However, a partial melting of the mass causes, according to the invention the driving heat is in two steps fed, with the result that the temperature of the

_. _n punch 5 is so high that the first driving state occurs during hot forming. The second step takes place after molding, in which radiant heat acts directly on the plastic compound of the seal.

Taking into account that the initial value of the specific gravity of the plastisol in various examples 1.2 Table 1 shows that this value was initially caused by the temperature of the stamp 5 Foaming dropped by 0.2 to 0.3 and then a further drop in specific gravity by 0.17 to 0.27 occurred without any signs of degradation of the. Seal as a result of movement of the heater around 255 mm could be determined. So about half is based of foaming, measured as the drop in specific gravity, at the temperature of the punch 5 and the anvil.

Further comparative tests were carried out with an infrared after-heater, which was switched off in three of six tests and in operation in the other three. A plastisol compound with PVC resin, a plasticizer, a blowing agent and small amounts of other additives was used. This mass was at 140 ⁰ C and a specific gravity of 1.20 at 200 ° C of 0.61 what. _{3 [} corresponds to a maximum inflation. At an exit

ORlGiNAL INSPECTED BAD ORIGINAL

value of the specific gravity of 1.20 before molding, a decrease in the is achieved with 100% foaming specific gravity by 0.59.

With the after-heating switched on and at three different temperatures of the punch and anvil unit, the following results were obtained, where Θ. a punch temperature of 180 C and an anvil temperature of 190 C, θ_ temperature of 210 ⁰ C or 220 ° C and Θ-- temperatures of 130 ⁰ C or 240 ° C correspond to:

At Θ. was the specific gravity value after Forming and after-heating 1.20, so no foaming had occurred.

In the case of © _p , the specific gravity value without after-heating was 1.02, which corresponds to 30.5% of the possible foaming, and with after-heating it was 0.4, which corresponds to 44 % of the possible foaming.

At θ- the specific gravity value without heating was 0.88, which corresponds to 54.2 % of the possible foaming, and with post-heating it was 0.81, corresponding to 66.1 % of the possible foaming.

From the experiments with © "and ©" it is clear that the foaming occurring in the first stage is well over half of the total that can be achieved with this process Foaming lies.

·

With the results of 9 “, for which an optimal Foaming of 66.1% was achieved, the finished seal looked both in the outer area and in the middle The area was whitish-yellow, no signs of decomposition of the seal were discernible, and the middle) area

ORIGINAL INSPECTED
BATH ORIGINAL

330833Ü

- ti υ -

the seal was so foamed that it was no longer translucent, which was also the case with the GB-PS method 1 109 849 was aimed for. The finished gasket had good elastic properties as required for a suitable one Sealing are necessary.

ORIGINAL INSPECTED

Claims (1)

Expectations Process for the formation of foamed seals in container closures in which a certain quantity a plastisol is introduced into the container closure with a blowing agent, the plastisol in the for the finished seal is brought into the required shape and finally radiant heat acts on the plastisol, to give the finished seal a 'cell structure, characterized in that when the Plastisol this is heated to such an extent that the foaming of the plastisol is caused by the release of the blowing agent begins, which means that the seal has a cell structure even after it has been shaped. ORIGINAL INSPECTED A method according to claim 1, characterized in that the plastisol is pressed together during molding with the heated punch of an anvil-punch molding device and the temperature of the molding device is kept at 140 ^° C to 260 ^° C. 3. The method according to claim 2, characterized in that the temperature of the molding device is kept at 170 ° C to 240 ^° C. 4. The method according to any one of claims 1 to 3, characterized characterized in that immediately after forming the seal through over the movement path of the with seals provided closures located infrared heating elements Radiant heat is supplied. V>. Process according to Claim 4, characterized in that the infrared radiation used has a wavelength of 1 to 4 µm. fi. Method according to one of claims 1 to 5, characterized characterized that more than half the reduction in specific gravity due to the two-stage Foaming after the first stage of supply of heat during molding and before the second stage of supply of Radiant heat is achieved. i. Process according to one of Claims 1 to 6, characterized in that the plastisol comprises a vinyl resin suspended in a plasticizer. 8. Device for performing the method according to one of claims 1 to 7 with a plurality of individual Forming devices with an anvil for receiving a closure and a stamp (5) for ORIGINAL INSPECTED _ßAD ORIGINAL L: - ■ Forming a seal in the rotary head (3) having this closure, with a sorting device (13) for feeding a series of closures to successive shaping devices of the rotary head (3), with an input device for inputting a certain amount of plastisol into each closure inserted, with a dispensing device (9) for dispensing the closures from the rotary head (3) after molding the seals, with a heater (17) for applying radiant heat to those leaving the rotary head (3) Closures as well as with a device for heating the forming device of the rotary head (3), characterized by a device for regulating the temperature of the molding devices to υ inοη Value between 140 C and 260 C, around the beginning of the Foaming of the introduced with the input device Ensure plastisols. 9. Apparatus according to claim 8, characterized in that that the delivery device has a delivery star wheel (9), a main delivery belt (19) and one between the delivery , star wheel (9) and the main delivery belt (19) provided Has conveyor (11). 10. The device according to claim 9, characterized in that that the heater (17) over the outer area of the Abg, star wheel (9) is attached. 11. The device according to claim 9, characterized., that the heater (17a) above the conveyor (11) is arranged. 12. The device according to claim 9, characterized in that the heater (17c) is arranged over the main delivery hand ί - \ u) . ORIGINAL INSPECTED BAD ORIGINAL