FI75474C - FOERFARANDE OCH ANORDNING FOER FOERPACKNING AV PASTOESA LIVSMEDEL FOERETRAEDESVIS AV KOETT- ELLER KORVVAROR I ETT AV FLERA SKIKT BESTAOENDE LIVSMEDELHOELJE SAMT FYLLNINGSHOELJE-ENHET FOER - Google Patents

Description

75474

Method and apparatus for packaging pasty foodstuffs, mainly meat or sausage products, in a multi-layer food casing and a filling unit for this method 5

The invention relates to a method for packaging pasty foods in a multilayer food casing according to the preamble of claim 1, to a suitable device of the type mentioned in the preamble of claim 4 and to a filling shell unit of the type mentioned in the preamble of claim 5 for applying this method.

Different types of sausages require crusts with different characteristics. As a result, sausages known as raw sausage, such as salami, are prepared by drying and possibly smoking, which gives them a longer shelf life. Therefore, they require shells that specifically permeate water vapor and smoke. Other types of sausages, e.g. liver sausages, are cooked to ensure their preservation and require shells that are permeable to oxygen, water and water vapor, especially to prevent them from drying out during storage. Some sausage casings have a net hose again to improve their durability.

For these reasons, a number of coatings have been developed which have the function of improving cellulose shells in many respects compared to uncoated shells, known as raw shells.

To combine the advantages of different coaters, multi-layer food casings have begun to be made. DE patent application 30 12 622 describes a method for producing a multilayer packaging shell and meat and sausage products packaged therein.

35 However, the manufacturing method described in the aforementioned patent application has the disadvantage that it can generally only be applied to very flexible hose shells, since these have to be pulled over the outside of the compressed 75754 filling shells. Moreover, also when using flexible let shells, it has been found that the continuously changing frictional force affects the filling function as the length of the filling shell decreases so strongly that the filling diameter of the sausages produced is not constant.

Therefore, on the basis of the prior art (DE patent application 30 12 622), the aim is to develop an improved method and apparatus for the production of a multilayer food casing which is suitable for both specially designed, highly stretchable, flexible hose casings as well as all conventional hose casings. in addition, that the filling splits and remains constant.

This object is achieved by a method according to the characterizing part of claim 1, a device according to the characterizing part of claim 4 and a filling-shell unit according to the characterizing part of claim 5. According to this method, a multi-layered food casing is prepared, which is intended for use mainly in meat or sausage products. The different layers of this food shell consist of tubular discrete shells which are placed in compressed filling shell units one after the other on the filling tube of the filling machine, at the same time straightening and drawing the food material from the filling tube, preferably in the sausage mass, from the filling shell. The method according to the invention is characterized in that the compressed separate shell formed by the inner layer of the multilayer food shell is placed on the filling tube first and the compressed separate shell forming the multilayer food shell in each case on the last outer layer is filled. The corrected parts of the filling envelopes are in each case pulled through the inner hole of all the filling envelopes in the direction of the opening of the filling tube 35, possibly also through the inner hole of the filling envelope belonging to the respective rectified part.

Il 75474 3 In the context of the invention, the term "filling shell" means a hollow rod made of a tubular film having a very large length relative to its diameter and compressed to a suitable length by conventional compression methods known in the art. The outer diameter of the hollow rod is then larger than the diameter of the tubular film forming the hollow rod, and the inner diameter of the hollow rod is smaller than the diameter of the tubular film 10 from which the hollow rod is formed. The empty space inside the hollow rod is called the "inner hole" of the filling shell.

Tubular films can be made seamlessly by extrusion or spinning using ring-15 orifices, or they can be flat films bent into a hose and provided with a seam.

The multi-layered food shell preferably consists of 2-4 layers. The method is particularly suitable for the production of a shell with 2-3 layers.

20 In order to make the layers adhere better to each other, an adhesive can also be placed between them. This can produce its fixing effect either as soon as it comes into contact with the layers, or with the pressure generated during the filling phase, or in the post-treatment by means of a flow of water or during boiling.

The binder can be applied to the shell material forming the compressed filling shell on the outside and / or inside before or during the compression of the shell, e.g. by dipping, spraying or brushing. The Side-30 substance can also be attached directly to the filling shell during the wetting step or the filling step. The present invention does not relate to the binder itself or its attachment, which is part of the prior art, but to the method described above used in a preferred embodiment of this binder to improve the attachment.

75474

It is important that the individual shells are always guided through the inner holes and never over the outer circumference of the compressed filling shells. Namely, due to the formation of folds when assembling the layers of the filling shell, the outer diameter of the compressed filling shell 5 is always larger than the diameter of the hose-shaped film forming the filling shell, so that only very stretchable and flexible film materials can be pulled over the outer shell.

An apparatus for packaging foodstuffs, in particular meat or sausage products, in a multilayer food casing comprising a filling tube of a filling machine and at least two tubular films compressed into filling shells, which are arranged in succession on top of the filling tube. In each case, one straightened part of the filling envelope is pulled from the filling envelope in the direction of the filling pipe opening. A braking device known per se is arranged close to the opening of the filling pipe. The respective rectified part of the filling shell then always extends in the direction of the opening 20 of the filling tube through the inner holes of the filling shells arranged side by side, possibly even through the inner hole of the filling shell from which it has been drawn.

The sausage mass from the filling tube straightens the different layers of the multi-layered food casing and pulls them from the respective filling casing. In this case, there may be varying frictional forces between the individual filling shells and the respective pulled individual shells, which cause an uneven straightening function of the shell material and pulling from the filling shells.

30 Frictional forces can change during the filling operation and are difficult to control. As the length of the filling shell shortens, the frictional force decreases, which can lead to uneven filling dimensions: at the beginning of the filling phase, the sausages are tensioned and at the end, the shells are not filled sufficiently. To compensate for the frictional resistance when drawing different layers of a multi-layer food shell

II

In practice, it has proved very advantageous in the device according to the invention to place spacers between the end faces of adjacent filling shells, between the inner hole of the filling shell and the respective straightened part, and possibly also between two straightened parts. Intermediates of this type are part of the prior art (U.S. Patent Application 4,292,711).

According to a preferred embodiment of the invention, the filling envelopes are pre-packaged in a filling envelope unit according to the invention in a support box, optionally together with intermediate parts. This has the advantage that separate shells and spacers do not have to be placed separately on the filling tube before filling, but the entire filling shell-15 unit can be pushed onto the tube as one part, whereby the filling function is considerably facilitated.

A very preferred embodiment of the present invention is therefore a filling shell unit for the production of pasty foodstuffs, in particular meat or sausage products, packed in multilayer food casings, suitable for filling the filling tube of a filling machine and arranged with several filling shells pre-arranged coaxially and sequentially together with the filling shells in the surrounding support housing (patent-25 requirement 6).

In practice, it has been found to be very advantageous to provide intermediate parts in this filling shell unit as well, so that the frictional forces occurring in the simultaneous straightening and filling step can be reduced and kept essentially constant.

The filling pressure of the filling machine is preferably adjusted so that even the outer layer of the multi-layer food casing is still stretched, and in this case all the layers forming the filling casing are certainly unfoldable.

75474 6

The invention is illustrated in more detail in Figures 1 to 10. In which Figure 1 shows a cross-sectional half of a device in which the straightened parts of the Fig. 1 shows the device of Fig. 1 with intermediate parts connected between separate filling shells, Fig. 4 shows the device of Fig. 2 with intermediate parts connected between separate filling shells, Fig. 5 shows in cross-sectional half a device with an intermediate part connected between two filling shells. The first and last filling envelopes of the En-15 are pulled unturned, the middle one is pulled inverted, Figure 6 shows a cross-sectional half of the device in which the intermediate part supports the filling envelope. Immediately the filling shell in the filling tube opening is pulled inverted, Fig. 7 shows a cross-sectional half of a filling shell unit with three filling shells in a package acting as a support box, Fig. 8 shows a cross-sectional half of a filling shell unit with a filling shell material website. The middle filling shell is pulled inverted, Fig. 9 shows a cross-sectional half of the filling shell unit, in which the filling shells and one intermediate part are in a package acting as a support box. Both filling shells near the opening of the filling tube are pulled inverted, and Fig. 10 shows a cross-sectional half of the filling-shell unit, in which the filling shells and their two intermediate parts are in a package acting as a support housing.

Both filler shells near the filler tube opening are pulled inverted.

Il 75474

Guide the shells to each other through their inner holes can take place in different ways. In each case, the filling shells are placed one after the other on the filling pipe 1.

In this case, the filling shell 3 forming the inner layer 5 of the multilayer food shell is first placed on the filling tube 1, furthest from the brake device 2 in the filling tube opening 19. Thereafter, so much shell material is taken from the filling shell 3 that the end 3b of the straightened shell part 19 over. On top of the filling tube 1, on which the shell material 3a is now drawn from the filling shell 3, the next filling shell 4 is then pushed, from which the shell material 4a forming the next layer of the multilayer food shell is drawn. When the shell material 4b is pulled over the opening 19 of the filling tube, the filling shell 5 is applied in the same manner and the shell material 5b is drawn from it.

Depending on the length of the filling tube 1 and the compressed filling shells 3, 4 and 5, and of course also: depending on the requirements for the multi-layer food shell, the shells can also be produced according to this method with two or more layers.

When the brake device 2 is inserted, and the open ends of the shell is sealed connector 14 (Figures 1 and 2), a closure 25 or bandage, comprising a number of layers of the food casing filling of the filling material can begin in the direction of the arrow (Figures 1 and 2).

In the device shown in Fig. 1, the inside of the material forming the filling shell 3 comes into contact with the filling material (e.g. sausage mass), while the outside of the material forming the filling shell 3 contacts the inner surface of the hose material forming the filling shell 4. However, for special applications it may be advantageous not to have a multilayer the inside of the filling shell comes into contact with the filling material, but the outside of this filling shell comes into contact with the filling material 8 75474, whereby the inside of this filling shell is correspondingly connected to the material of the next layer, mainly the next filling shell, this inverting function of turning the compressed hose film known (U.S. Patent Application 4,292,711) and can be performed with the device shown in Figure 2.

In this case, the material of the compressed filling shell 3 forming the inner layer of the multi-layer organ-shell is also pushed onto the filling tube 1 10 as well. However, this is done so that the filling of the casing 3 filling opening 19 to the distal side of the debarking-al and directed inside out through the shell laterally moved to the filling 3 inside the hole filling tube opening 19 and through the line. Thereafter, the filling shell 4 can be placed in the filling tube in the same manner, whereby a turning function can also be achieved in this shell layer material.

This process can - as already mentioned - be continued with a plurality of filling shells, which are inserted 20 as shown in Figure 1 or 2, depending on whether the turning function is to be achieved or omitted. When the open ends of the shell are closed (connector 14) and the jar roller device 2 is in place, the shells can be filled by means of the filling tube 1.

The device shown in Fig. 3 further has an intermediate portion 6 between the corrugated shell material 3a and the inner surface of the filling shell 4 and the corrected shell material 4a and an intermediate portion 6 and frictional forces and to ensure even filling. The spacers are attached to the brackets 20 so that they cannot move.

In the structure shown in Fig. 4, the intermediate parts 8, 9 35 and 10, when using the above-mentioned turning function, cause a reduction in the frictional forces during filling, and

II

75474 9 their remaining approximately constant. These intermediate components are responsible for filling the shells 3, 4 and 5, the interior of the shell material and the adjusted 3a, 4a and 5a between.

Figure 5 shows a structure in which only the filling-5 shell 4 is pulled by turning. The intermediate part 11 causes the frictional forces to remain approximately constant. The intermediate part has a filling casings 4 and 5, the interior of the shell and the adjusted portion 4a in between.

In the structure according to Figure 6, only the filling shell 10 5 is pulled by turning. The intermediate part 12 to promote filling the interior of the casing 5 and the output of the shell material 5a frictional forces between the maintenance of approximately constant.

The filling envelope unit of Figure 7 has three filling envelopes 3, 4 and 5 pre-packaged ready for use in a support case 16.

15 In all three filling envelopes, the shell material is drawn from the end of the filling envelope which is in the later filling process on the opening side of the filling tube. The support housing 16 is a plastic foil with openings 17 which facilitate wetting of the filling shells before they are used. The support 16 of the support-16 is in each case around the round plate 18. The three shells are connected together at the outlet of the support housing by a connector 14.

The filling envelope unit illustrated in Figure 8 has three filling envelopes 3, 4 and 5 pre-packed in a support-16 housing 16. The filling envelope 4 is then pulled by turning it.

The pre-packaged filling shell unit shown in Fig. 9 comprises three filling shells 3, 4 and 5 and a support housing 16 and in addition an intermediate part 12.

The pre-packaged filling shell unit according to Fig. 10 comprises, in addition to the filling shells 3, 4 and 5 and the support housing 16, two intermediate parts 12 and 13.

A particular advantage of the invention is that shells with different properties can be connected to each other in a desired manner as required. Thus, the manufacturer of sausage products 75474 10 does not have to confine himself to a type of casing with certain special features, but can use casings with just the desired properties to make a multi-layer packaging casing.

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Claims (7)

11 Claims: 7 5474 1. A method for packaging pasty foods, mainly meat or sausage products, in a multilayer food casing, wherein the different layers of the food casing form tubular shells compressed into filling casings are successively placed on top of a filling machine filling tube, Salo manually straightens and pulls them from the respective filling shell, characterized in that the separate shell, which in each case forms the innermost layer of the food shell, is placed on top of the filling tube first and the separate shell which forms the outer layer of the food shell 15 last, and the rectified parts of the filling shells are drawn. through the inner hole of the filling shells in the direction of the filling tube opening, possibly also through the inner hole of the filling shell belonging to the straightened part in the direction of the filling tube opening, whereby the end sides of the adjacent filling shells are kept separate. A method according to claim 1, characterized in that the straightened parts are pulled at a certain distance from the inner side of the adjacent filling shell. A method according to claim 1 or 2, characterized in that in order to improve the mutual adhesion properties of the layers, a certain binder is placed between the different layers forming the multi-layer food shell. 4. Apparatus for packaging pasty foods, such as meat-30 or sausage products, in a multi-layered food casing, comprising a filling tube (1) of a filling machine, two or more tubular casings compressed into filling casings (3, 4, 5) arranged in succession in a filling tube ( 1) on which a certain rectified part (3a, 4a) is pulled in the direction of the filling tube opening (19) 12 75474, and near the filling tube opening (19) of the brake device (2), characterized in that the respective rectified part (3) 3a) extends in the direction of the filling tube opening through the inner hole 5 of the adjacent filling shells (4, 5) and possibly also through the inner hole of its own filling shell (3), and that the different layers of the multilayer food shell form separate shells (3a, 4a) 3, 4) between the end faces 10 of adjacent filling shells (3, 4), between the inner hole of the filling shell and the drawn, straightened part (3a, 4a) and ma intermediate parts (6 to 13) arranged between the two adjusted parts (3a, 4a). Filling shell unit for use in applying the method according to claim 1, to be placed on the filling tube (1), characterized in that a plurality of filling shells (3, 4, 5) arranged in coaxial sequence are pre-packed together in pre-filled filling shells (3, 4). , 5) to the surrounding support housing (16), wherein the straightened separate shell (4a) pulled from one filling shell (4) extends through the inner hole of the adjacent filling shell (5) and possibly also through the inner hole of the filling shell (4) comprising the separate shell (4a), and that an intermediate part (13) is placed between one filling shell (4) and a separate shell (4a) drawn therefrom. Il 13 7 S4 7 4 Patent krav: / u n t H