Carrier for storing natural casings with anti-slip protection

Abstract

Carrier (100) for storing natural casing (900), comprising: - a tube (120) with a casing (130) for receiving the natural casing (900) along a longitudinal axis X of the tube (120); the tube (120) having a first end (121) and a second end (122), - at least one first elastic retaining means (150) at the first end (121) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130) and / or at least one second elastic retaining means (160) at the second end (122) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130); wherein the first retaining means (150) is a part of the casing (130), wherein the first retaining means (150) is folded out in the radial direction of the casing (130), wherein the first, unfolded, elastic retaining means (150) is so flexible that, solely when the natural casing (900) is pulled over the first retaining means (150), it yields due to a force exerted radially by the natural casing (900) and is pulled onto the natural casing (900), without the first retaining means (150) being foldable, collapsible or unrollable, characterized in that the first retaining means (150) is partially separated from the casing (130) by a first slot (151).

Description

[0001] The invention relates to carriers and methods for storing natural casings.

[0002] Natural casings are prepared for shipping, stored and sent to sausage manufacturers.

[0003] The sausage manufacturers fill the natural casings with sausage meat.

[0004] To simplify further processing of natural casings at the sausage manufacturer, natural casings are assembled on storage systems and then delivered to the sausage manufacturer. The storage systems are usually tubes made of plastic. To prevent the natural casing from slipping off the tube, anti-slip devices are attached to both ends of the tube. According to the state of the art, anti-slip devices are usually rubber rings. Anti-slip devices integrated into the tube are also known. The disadvantage of the state-of-the-art carriers is that the staff must manually fold, fold, or roll the retaining device to prevent the natural casing, which has already been pulled onto the carrier, from slipping. Attaching rubber rings to the tube is also time-consuming. Folding or folding according to the state of the art means that an anti-slip device is moved by an angle essentially from 0° to 180°.

[0005] Another disadvantage of storage systems with attachable anti-slip barriers is that the anti-slip barrier can get lost by sausage manufacturers and get into the sausage meat, so that the sausage has to be removed from production at great expense.

[0006] Another disadvantage of conventional storage systems is that they are made from fossil-based plastics and are therefore not CO2-neutral. This poses an environmental problem.

[0007] According to the state of the art, the tubes mentioned are made of fossil-based, flexible plastics such as polyethylene. Furthermore, the carrier system must be made of a food-safe material.

[0008] DE69708156T2 discloses a natural casing sausage casing with manually foldable ends to prevent slipping out of the already pulled natural casing.

[0009] FR2775873A1 discloses a natural casing sausage casing with manually rollable ends that prevent slipping out of the already rolled-up natural casing.

[0010] EP3241448A1 discloses a support member for storing natural casings with manually foldable ends (folding sections) that prevent the already pulled-up natural casing from slipping out.

[0011] Here, these storage systems are referred to as carriers for storing natural casings. The applicant has disclosed a slip barrier for a carrier that is equipped with strips as an extension of a tube of the carrier.

[0012] The object of the invention is therefore to provide a user-friendly carrier and method for preventing slipping obstacles from falling into the sausage meat. To achieve this object, the invention has the features specified in the independent claims. Advantageous embodiments thereof are described in the subclaims.

[0013] The invention provides a carrier for natural casing and comprises a tube and at least one retaining means integrated in the tube.

[0014] According to the state of the art, the natural casing is pulled onto a tube and finished using a casing pulling device. The casing pulling device has a pulling mandrel and two driven rollers. The tube is first placed onto the mandrel. The natural casing is then pulled onto the tube manually, initially, and then completely onto the tube using the rollers. When pulling several pieces of natural casing onto a tube, the pieces are normally pulled onto one another with some overlap. Therefore, it is important to note the direction of the overlap for later processing in a sausage factory, because if the overlapping sequence is incorrect, the stuffing meat can tear the natural casing at a point where it is incorrectly overlapped.

[0015] The inventive solution to the problem of end pieces falling into the sausage meat is to provide a carrier for storing natural casing that has no loose end pieces or slipping obstacles. The inventive carrier comprises a tube and, at least at one end, an integrated retaining means that serves as a slipping obstacle. Table 1 shows the diameter of the tube in relation to the caliber of the natural casing to be stored on it. Such a tube usually has a length of 500 mm and a wall thickness of approximately 0.5 mm. For example, a natural casing with a caliber of 20 / 22 is usually stored loosely and slipperily on a tube with a diameter of 15.2 mm. This means that the natural casing exerts no force on the tube because the circumference of the tube with a diameter of 15.2 is matched to the 20 / 22 natural casing for force-free packaging. Table 1: Outer diameter of tube vs. caliber of natural casing Caliber natural casing Outer diameter of pipe Wide restraint devices [mm] There [mm] Br [mm] at least 18 / 20 13,2 15 20 / 22 15,2 17 22 / 24 16,3 18 24 / 26 16,3 18 26 / 28 20,3 22 28 / 30 21,3 23

[0016] However, if the pipe circumference is increased, the circumference of the natural casing will also need to be increased. In this case, the increased pipe circumference exerts a force on the natural casing above it. The natural casing also exerts a counterforce on the pipe.

[0017] The retaining means according to the invention is designed as an integrated component of the tube and has a width that is greater than the caliber of the natural casing to be accommodated, thereby preventing the natural casing already accommodated on the tube from slipping out. The retaining means according to the invention is designed as a partial surface of the casing of the tube, which is partially separated from the rest of the casing by at least one slit. The slit is delimited by two points on the casing that form a shortest line on the casing. In a first position, the retaining means is aligned with the rest of the casing. Alignment means that the retaining means and the rest of the casing lie on the same cylindrical surface. In a second position, the retaining means protrudes radially from the casing at the point of the shortest line., the retaining device is folded out so that the natural casing is prevented from slipping out by the unfolded retaining device. A single retaining device is sufficient to prevent the natural casing from slipping out. However, further rotationally symmetrically arranged retaining devices can be used, which then look like a ship's propeller from the cross-sectional side and are therefore referred to here as a "helix". The retaining device is flexible and can be pressed towards the longitudinal axis of the tube so that the retaining device gives way and is returned to its original or compressed position. A force is required to return the retaining device. When pulling off the natural casing according to the invention, the natural casing is stripped or pulled off along the tube towards the second end of the tube manually or mechanically. The natural casing must now slide over the unfolded retaining device.The local circumference of the natural casing expands at the point where the restraint device is unfolded. This causes a counter-reaction of the natural casing in the sense that the natural casing exerts a force on the unfolded restraint device at this point, pushing it back to its original position. Consequently, the natural casing can slide out simply by stripping the natural casing against the flexible, yielding restraint device and the resulting force of the natural casing on the restraint device, without any other action being necessary apart from stripping. This means that it is not necessary to bend, roll, or fold the restraint device for the natural casing to slide out.

[0018] It is also possible to design the retaining means with two slits, which, for example, run essentially along the longitudinal axis of the pipe, and form a strip which can be plastically modified so that it curves outwards from the surface of the pipe casing, i.e., away from the longitudinal axis of the pipe. The strip is connected to the rest of the casing at two points between the slits. The arc can be a partial circle, a partial ellipse, or a line. The line can be composed of several straight lines and / or several curved lines.When stripping a sheet along the length of the sheet, wrinkles can form at the end of the sheet because the sheet can initially be pressed downwards to flatten it, but the difference in length between the sheet length and the slit length cannot be displaced, so that a fold can form where the slit ends. The formation of wrinkles disrupts the overlapping sequence of the natural casing when the natural casing is stripped. A wave-like design of the retaining means makes it possible to avoid wrinkle-forming displacement of the strip material along the longitudinal axis of the tube when the retaining means is compressed. Because the bulge looks like a bow, the retaining means can be called a "bow". The inventive bow is wrinkle-free, i.e. no disruptive wrinkles arise during use.The retaining means is flexible and can be pressed toward the longitudinal axis of the tube so that the retaining means yields and is guided into a compressed position. During the removal of the natural casing according to the invention, the natural casing is stripped or pulled along the tube towards the second end of the tube. The natural casing must now slide over the curved retaining means. In doing so, the local circumference of the natural casing expands at the point of the bulge. This causes a counter-reaction of the natural casing in the sense that the natural casing exerts a force on the bulged retaining means at this point and pushes it back toward the longitudinal axis of the tube. Consequently, the natural casing can slide out of the retaining means simply by stripping the natural casing against the flexible, yielding retaining means and the resulting force of the natural casing on the retaining means, without any other action being necessary other than stripping. This meansIt is not necessary to bend, roll, or fold the retaining device to allow the natural casing to slide out. This is an advantage because, compared to the prior art, at least one work step can be eliminated when stripping the natural casing according to the invention.

[0019] It is essential that only one or a few retention devices are located at the first or second end of the pipe, so that the casing does not need to have many slots. As a load-bearing element, the casing must be stable to ensure proper functioning of the retention devices in terms of maintaining the sequence of overlaps of the natural casing.

[0020] It is also possible to design the retaining means as a "curve" so that the retaining means can be curved outwards away from the longitudinal axis of the tube to act as an obstacle to slipping, but the retaining means can also be curved inwards towards the longitudinal axis of the tube so as not to pose an obstacle when the natural casing is being pulled on and to ensure that the overlap of the natural casing is not disturbed. The snap functionality is known from the prior art. This means that a curvature can be concave and curved inwards in a first position and convex and curved inwards in a second position, which can then be changed from the first concave position to the second convex position by an external force. The change can take place manually with a finger or mechanically with a changeover device. The change from concave to convex can take place using a changeover device such as a lever device or a stop.The conversion from convex to concave can be achieved by a conversion device such as a constriction part.

[0021] A combination of an integrated retention device with a loose end piece known from the prior art is possible. For example, the first end of the tube can be fitted with a loose end piece after the natural casing has been pulled on, and the second end of the tube can be provided with an integrated retention device.

[0022] To design the support system for storing natural casings with an improved carbon footprint, the tube and / or at least one end section can be made of a degradable plastic that is home compostable and / or industrially compostable. Such plastics include PLA and PBS. The tube and / or at least one end section can be made of a bio-based plastic, such as PLA.

[0023] Examples of the carrier for storing natural casings are described in the following drawings. It shows: Fig. 1 a schematic representation of a support as a tube according to the prior art, Fig. 2 a schematic plan view of the carrier according to the invention with retaining means, Fig. 3a a schematic representation of a first restraining means with magnification A, Fig. 3b a schematic representation of the unfolded first restraint means with magnification A, Fig. 4a a schematic representation of a second restraining means with magnification B, Fig. 4b a schematic representation of the unfolded second restraint means with enlargement B, Fig. 5a a schematic plan view with the first restraint means unfolded, Fig.5b a schematic transverse view with the first restraint means unfolded, Fig. 6a a schematic plan view with the second restraint means unfolded, Fig. 6b a schematic transverse view with the second restraint means unfolded, Fig. 7a a schematic plan view of a second retaining means enclosed by the jacket, Fig. 7b a schematic transverse view of the second unfolded restraint means, Fig. 7c is a schematic plan view of a second retaining means at the second end of the tube, Fig. 7d is a schematic plan view of a first and a second projecting retaining means at the two ends of the tube, Fig. 7e is a schematic side view of the first and second projecting retaining means at the two ends of the tube, Fig.7f is a schematic transverse view of the second projecting retaining means at the second end of the tube, Fig. 7g is a schematic side view of the clamped first projecting retaining means at the first end of the tube, Fig. 7h a schematic side view of the carrier with natural casing pulled out thereon and with the first and second projecting retaining means, Fig. 8a a schematic plan view with a third and a fourth retaining means, Fig. 8b a schematic plan view of the fourth restraining means with magnification D, Fig. 8c a schematic plan view of the third restraining means with magnification C, Fig. 8d a schematic side view with the third and fourth restraining means, Fig. 8e a schematic side view of the fourth restraining means with magnification F, Fig.8f a schematic side view of the third restraining means with magnification E, Fig. 8g is a schematic side view of the fourth retaining means with magnification F for a particular embodiment, Fig. 8h a schematic side view of the third retaining means with magnification E for a particular embodiment, Fig. 8j is a schematic plan view with a fourth retaining means, Fig. 81 a schematic side view with the fourth restraining means, Fig. 9a a schematic side view with the fifth and sixth restraining means, Fig. 9b a schematic side view of the sixth restraining means with magnification L curved inwards, Fig. 9c a schematic side view of the fifth restraining means with magnification K curved inwards, Fig.9d a schematic side view of the sixth restraining means with magnification L curved outwards, Fig. 9e a schematic side view of the fifth restraining means with magnification K' curved outwards, Fig. 9f a schematic plan view of the fifth retaining means with enlargement C curved inwards with a preceding guide means, Fig. 9g a schematic side view of the fifth restraining means with enlargement C curved inwards with a preceding guide means, Fig. 10 a schematic, perspective view of a mandrel, Fig. 11 a schematic side view of the carrier with natural casing pulled out thereon and with the fifth and fourth retaining means, Fig. 12a is a schematic representation of a rubber ring according to the prior art, Fig.12b is a schematic representation of a plug-in part according to the prior art, Fig. 12c a schematic representation of a cap according to the prior art. List of reference symbols 100 carriers 120 pipe 121 first end of the pipe 122 second end of the pipe 130 coat 150 first restraint device 150a first protruding restraint device 151 first slot 152 first position zero of the restraint device 153 first point 154 second point 155 first shortest route 156 first line train 160 second restraint device 160a second protruding restraint device 161 second slot 162 second position zero of the second restraint device 163 third point 164 fourth point 165 second shortest route 166 second line train 170 third restraint device 171 fourth slot 172 fifth slot 180 fourth restraint device 181 sixth slot 182 seventh slot 270 fifth restraint device 280 sixth restraint device 300 thorn 320 groove 330 deepening 370 first attack 380 second stop 500 rubber rings 600 insert 700 cone part 900 natural casings A Magnification A B Magnification B Br Width of the restraint device C Magnification C Top view D Magnification D Top view E Enlargement E Side view F Magnification F Side view K Magnification K Side view L Magnification L Side view K' Magnification K Side view curved outwards L' Magnification L Side view curved outwards X Longitudinal axis

[0024] Fig. Figure 1 shows a carrier 100 for storing natural casings according to the prior art, which has a tube 120 with a jacket 130. In Fig. 9a shows a rubber ring 500 which is intended as a retaining means for fitting onto the pipe. Fig. Figure 9b shows an insert 600 for insertion into the pipe. The insert 600 is cylindrical and has a flat, circular end on one side. The insert 600 is insertable into the pipe 120 and is fluid-permeable. The rubber ring 500 and insert 600 are known in the art as anti-slip devices.

[0025] In the Fig.Figure 9c shows a cap part 700 for insertion into the pipe. The cap part 700 is described in DE202016100772U1 as a pipe socket. The cap part 700 is fluid-permeable, funnel-shaped, and longitudinally slit, making it resilient in its diameter and having a flat, circular end on its expanded side.

[0026] Fig. Figure 2 shows a carrier 100 for storing natural casing 900 according to the invention, comprising a tube 120 with a jacket 130 and a first retaining means 150. The natural casing 900 with retaining means 270 and 280 is in Fig.11 is shown schematically. The cylindrical casing 130 forms the tube 120. The tube 120 has a first end 121 and a second end 122. The natural casing is generally pulled onto the casing 130 of the tube 120 at the first end 121 and, if necessary, pulled off the casing 130 at the second end 122. This means that along a longitudinal axis X of the tube 120, the first end 121 is first and the second end 122 is after.

[0027] Fig. 3a represents the magnification A of the Fig.2 of the first retaining means 150 in the unfolded state. The first retaining means 150 is part of the casing 130 of the tube 120 and is outlined by a line 155 and a line 156. The line 155 can also be a line. There are two points on the casing 130: a first point 153 and a second point 154. The second point 154 can be closer to the second end 122 of the tube 120 than the first point 153. The line 155 lies on the casing 130 and connects the first point 153 to the second point 154. The line 156 can be composed of several straight lines and / or several curved lines. Along the line 156, a slot 151 partially separates the first retaining means 150 from the casing 130. Along the line 155, the retaining means is connected to the casing 130. Fig. 3a shows a plan view of the magnification A of the Fig.2 of the first restraint means 150 in the unfolded state. The line 156 as an outline of the restraint means 150 has moved from the first position zero, ie, the non-folded position, which is shown by the dashed line 152, to a second, now unfolded position.

[0028] The unfolded first retaining means 150 creates an angle of less than 90° with the casing 130 along line 155. The angle is between 0° and 89°, preferably 5° to 30°, so that the natural casing can be stripped along the longitudinal axis X of the tube 120 and slide over the first retaining means 150 without significant resistance. Here, the counterforce of the expanded natural casing 900 at the location of the first retaining means 150 is sufficient to push the first retaining means 150 down and clear the way for the natural casing 900 to slide out.

[0029] Fig.5a shows a carrier 100 comprising a tube 120 with a casing 130 and a first unfolded retaining means 150. Fig. 5b shows a cross section of the tube 120 with a first retaining means 150 in the unfolded state.

[0030] Fig. 6a shows a carrier 100 having a tube 120 with a jacket 130 and a second unfolded retaining means 160. Fig. Figure 6b shows a cross section of the tube 120 with the first retaining means 160 in the unfolded state.

[0031] Fig. Figure 7a illustrates a carrier 100 comprising a tube 120 with a jacket 130 and a second unfolded retaining means 160 in an alternative embodiment in which the third point 163 and the fourth point 164 are the same distance from the second end 122 of the tube 120. This alternative is shown in Fig. 7a and Fig. 7b is shown schematically.

[0032] Fig.7c illustrates the top view of the second unfolded retaining means 160, which is arranged directly at the second end 122 of the tube 120, where the jacket 130 is partially open, so that the retaining means 160 is not enclosed by the jacket 130.

[0033] Fig. Figure 7d illustrates the top view of a first projecting retaining means 150a as an alternative to the first retaining means 150, which is arranged directly at the first end 121 of the tube 120, where the jacket 130 is partially open, so that the retaining means 150 is not enclosed by the jacket 130.

[0034] Fig. Figure 7e illustrates a side view of the first and second projecting retaining means 150a, 160a, which are respectively arranged directly at first and second ends 121, 122 of the tube 120.

[0035] Fig. 7f shows a transverse view of the second projecting retaining means 160a. As in Fig.As shown in Figure 7g, the first protruding retaining means 150a must be flush with the casing 130 for the purpose of pulling the natural casing 900 out of the tube 120, ie, it must not be folded open, but rather lie on the same circumferential surface of the casing 130, so that it does not pose an obstacle when pulling on the natural casing 900. For this purpose, a mandrel comprising a clamping device is used. Such mandrels are known from the prior art and are usually used for clamping soft tubes. Fig. 7g shows that the first protruding retaining means 150a does not represent an obstacle. To ensure that the first retaining means 150a is flexible, it is clamped into the clamping device of the mandrel (mandrel and clamping device not shown here).

[0036] As in Fig.As shown in Figure 7 h, the first protruding retaining means 150a is released from the clamping device of the mandrel after the natural casing 900 has been pulled onto the tube 120, so that the first protruding retaining means 150a is opened again and acts as a slip obstacle to prevent the natural casing 900 from slipping out.

[0037] Fig. Figure 8a shows the top view of the carrier 100, which has a tube 120 with a jacket 130 and a third retaining means 170 and a fourth retaining means 180. Fig. Figure 8c shows a schematic enlarged plan view C of the third retaining means 170, which in Fig.8a with the circle C. In this particular embodiment, the third retaining means 170 is partially separated from the casing 130 by means of two slots. The slots are the fourth slot 171 and the fifth slot 172, which, by way of example, run substantially along the longitudinal axis X of the tube 120 and form a strip which, by plastic deformation, can be shaped such that it bulges outwards in an arc-like manner from the surface of the casing 130 of the tube 120, i.e., away from the longitudinal axis X of the tube 120.

[0038] Fig. Figure 8d shows the side view of the carrier 100 of the Fig. 8a with the restraint devices 170 and 180. Fig. Figure 8f shows a schematic enlarged side view E of the third retaining means 170, which in Fig.8d with the circle E. In this particular embodiment, the curved strip of the third retaining means 170 has the shape of an arc, which can be a partial circle, a partial ellipse, or a line. The line can be composed of several straight lines and / or several curved lines. When stripping a sheet along the longitudinal direction of the sheet, a fold can form at the end of the arc because the sheet can initially be pressed flat downwards, but then the difference in length between the arc length and the slit length cannot be displaced, so that a fold could eventually form where the slit (171, 172) ends. The formation of folds disrupts the sequence of overlaps of the natural casing 900 when pulling the natural casing 900 onto the tube 120 via the third retaining means 170. That is, the overlapping sequence of the natural casing 900 arranged when pulling on the natural casing 900 can be lost. A wave-like design of the third retaining means 170 makes it possible to avoid a fold-forming displacement of the strip material along the longitudinal axis X of the tube 120 when pulling on the natural casing 900, ie, when compressing the third retaining means 170. Because the bulge looks like an arch, the retaining means can be called a "arch". The wave-like shape of the arch is shown schematically in . Fig. 8h. The bend according to the invention is wrinkle-free, meaning that no annoying wrinkles develop during use, because the portion of the bend closer to the second end 122 of the tube 120 bends downward, preventing the formation of wrinkles. "Downward" means a portion that approaches the longitudinal axis X of the tube 120, where there is room for deflection.

[0039] The fourth restraint means 180 is constructed analogously to the third restraint means 170. Fig. Figure 8b shows a schematic enlarged plan view D of the fourth retaining means 180, which in Fig. 8a with the circle D. A sixth slot 181 and a seventh slot 182 partially separate the fourth retaining means 180 from the casing 130. In this particular embodiment, the fourth retaining means 180 is partially separated from the casing 130 by means of two slots. The slots are the sixth slot 181 and the seventh slot 182, which, by way of example, run substantially along the longitudinal axis X of the tube 120 and form a strip. Fig. Figure 8e shows a schematic enlarged side view F of the fourth retaining means 180, which in Fig. 8d with the circle F. The curve of the fourth restraint device 180 is in Fig.8e. The wave-like arch of the fourth restraining means 180 is in Fig. 8g. Similar to the third retaining means 170, the fourth retaining means 180 is also crease-free. This means that a wave-like configuration of the fourth retaining means 180 makes it possible to avoid a crease-forming displacement of the strip material along the longitudinal axis X of the tube 120 when the natural casing 900 is pulled off, ie, when the fourth retaining means 180 is compressed. Fig. 8 years old like the Fig. Figure 8a shows the top view of the carrier 100, which has a tube 120 with a jacket 130 and a fourth retaining means 180. The fourth retaining means 180 in Fig. 8j in contrast to Fig.8a is arranged directly at the second end 122 of the tube 120, so that the fourth retaining means 180 has only one connection with the casing 130 and the bend of the fourth retaining means 180 at the second end 122 of the tube 120 has no connection to the casing 130.

[0040] Fig. 8i shows the side view of the carrier 100. The fourth retaining means 180 is arranged directly at the second end 122 of the tube 120.

[0041] The Fig. 9a to 9e represents a special embodiment of the support with the arched anti-slip obstacles, according to the Fig. 8a to 8h. The special feature is the inwardly curved, ie, concave bends. A sixth retaining means 280 at the second end 122 of the tube 120 and a fifth retaining means 270 at the first end 121 of the tube 120 are as in Fig.9a are concave and curved towards the longitudinal axis X. The magnification L for the sixth restraining means 280 is Fig. 9b and the enlargement K for the fifth restraining means 270 Fig. 9c. The advantage of this concave embodiment of the anti-slip barriers is that when the natural casing 900 is pulled onto the tube 120 via the first end of the tube 120, the retaining means does not stand in the way, so that the natural casing 900 can be pulled onto the tube 120 without any obstacle. The overlap of the natural casing pieces 900 is not disturbed when the natural casing 900 is pulled onto the tube 120. To pull the natural casing 900 onto the tube 120, the tube 120 is placed onto a mandrel 300, as shown in Fig. 10. The sixth retaining means 280 strikes a second stop 380 when the tube 120 is pushed onto the mandrel 300 and jumps from the concave position to a convex position, ie, curved outwards, as in Fig.9d, and acts as a slip barrier. The fifth retaining means 270 is intended to remain curved inward during the pulling of the natural casing 900. Therefore, the mandrel 300 has a groove 320 extending along the longitudinal axis X of the mandrel 120, into which the retaining means 270 is pushed until the retaining means 270 is located in a recess 330 on the casing 130 of the support 100 of the mandrel 300, so that the retaining means 270 does not interfere during the pulling of the natural casing 900 onto the tube 120. When the natural casing 900 is now on the tube 120, the carrier 100 is to be pulled out from the mandrel 300 in such a way that the retaining means 270 hits a first stop 370 and jumps from the concave position to a convex position, ie, curved outwards, as in Fig.9e, and functions as a slip barrier. The retaining means 270 can be converted from a first concave position, ie, curved inward, to a second convex position, ie, curved outward.

[0042] The fifth retaining means 270 and the sixth retaining means 280 are as in the previously described embodiment according to Fig. 8a, Fig. 8b and Fig. 8c separated from the jacket 130 by slots.

[0043] Fig. 9f and Fig. 9g shows a particular embodiment of the fifth retaining means 270. A guide means 275 is arranged in the positive X direction, between the fifth retaining means 270 and the sixth retaining means 280, directly in the immediate vicinity of the fifth retaining means 270 inside the tube 120. The guide means 275 is wider than the width of the fifth retaining means 270.

[0044] The guide means 275 is designed to be deep enough to be easily guided in the recess 330, and the guide means 275 is designed to be shallow enough to be guided beyond the first stop 370 when the tube 120 is pulled out without the guide means 275 getting caught on the first stop 370.

[0045] The advantage is that the fifth retaining means 270 in the inwardly curved state, ie in the first concave position, is not accidentally pressed outwards into the second convex position while being guided in the recess 330, because the guide means 275 is always pushed forward when the tube 120 is pushed onto the mandrel 300.

[0046] The width of the fifth restraining means 270 can be between 1 mm and 5 mm.

[0047] The width of the guide means 275 can accordingly be between 2 mm and 6 mm. The depth of the guide means 275 can be between 1 mm and 5 mm.

[0048] The guide means 275 can be designed to be flattened in the negative X-direction so that it does not get stuck there when pulled out over the first stop 370.

[0049] The width of the sixth restraining means 280 can be between 1 mm and 5 mm.

[0050] Later in the sausage factory, the outwardly curved retaining means 280 only needs to be pushed inward, so that the retaining means 280 returns to its concave position. The natural casing 900 can then be pulled from the carrier 100 onto the sausage tube in the sausage factory without disruption.

[0051] In a method If for pulling the natural casing 900 onto the tube 120, the following steps are carried out: - Provision of natural casing 900; - Provision of the carrier 100; wherein the carrier comprises a tube 120 having a first end 121 and a second end 122, wherein the carrier 100 has a first retaining means 150 or a third retaining means 170 at the first end 121, wherein the carrier 100 has a second retaining means 160 or a fourth retaining means 180 at the second end 122, - pulling the natural casing 900 onto the tube 120 at the first end 121 of the tube 120 via the first retaining means 150 or the third retaining means 170; wherein when the natural casing 900 is pulled on, the first retaining means 150, the second retaining means 160, the third retaining means 170 or the fourth retaining means 180 remain free of wrinkles.

[0052] In a method Ib for pulling the natural casing 900 from the tube 120, which was pulled according to method If, the following steps are carried out: - Pulling the natural casing 900 off the tube 120 at the second end 122 of the pipe 120 via the second retaining means 160 or the fourth retaining means 180; wherein when the natural casing 900 is pulled on and pulled off, the first retaining means 150, the second retaining means 160, the third retaining means 170 or the fourth retaining means 180 remain free of wrinkles.

[0053] In a further method IIf for pulling the natural casing 900 onto the tube 120, the following steps are carried out: - Provision of natural casing 900; - Provision of the carrier 100; wherein the carrier comprises a tube 120 having a first end 121 and a second end 122, wherein the carrier 100 has at the first end 121 a fifth retaining means 270 located in a concave position, wherein the carrier 100 has a sixth retaining means 280 in a convex position at the second end 122, - pulling the natural casing 900 onto the tube 120 at the first end 121 of the tube 120 via the fifth retaining means 270 located in the concave position; - Conversion of the restraint device 270 into a convex position.

[0054] In a method IIb for pulling the natural casing 900 from the tube 120, which was pulled according to method IIf, the following steps are carried out: - pulling the natural casing 900 off the tube 120 at the second end 122 of the tube 120 via the sixth retaining means 280; wherein when the natural casing 900 is removed, the fifth retaining means 270 remains convex. - Pulling the natural casing 900 off the tube 120 at the second end 122 of the pipe 120 via the sixth retaining means 280; wherein when the natural casing 900 is pulled off, the sixth retaining means 280 is brought into the concave position.

[0055] Or wherein the carrier 100 has a fourth retaining means 180 at the second end 122, which prevents the natural casing already pulled onto the tube 120 from slipping off. - pulling the natural casing 900 off the tube 120 at the second end 122 of the tube 120 via the fourth retaining means 180; When the natural casing 900 is removed from the fourth retaining means 180, the natural casing slides out simply by the natural casing being stripped against the flexible, yielding fourth retaining means, without any other action being necessary other than the stripping. This means that it is not necessary to bend, roll, or fold the retaining means for the natural casing to slide out.

[0056] A combination of restraint devices is possible and useful.

[0057] As an example, according to Table 2, the following anti-slip barriers can be provided at the first end 121 and the second end 122 of the pipe 120: Table 2: Combination of slip obstacles Fig. First end 121 Second End 122 Fig. 2, 3b, 5a 7d, 7e, 7f, 7g, 7h 8a, 8c, 8d, 8f, 8h first restraining means 150 first protruding restraining means 150a third restraining means 170 second retaining means 160 second protruding retaining means 160a fourth retaining means 180 rubber ring 500 insert part 600 cap part 700 2, 4b, 6b, 7a 7d, 7e, 7f, 7g, 7h 8a, 8b, 8d, 8e, 8g 9a 9b 9c 2, 3b, 5a 7d, 7e, 7f, 7g, 7h 8a, 8c, 8d, 8f, 8h 9a 9b 9c First restraining device 150 First protruding restraining device 150a Third restraining device 170 Rubber ring 500 Insert part 600 Cap part 700 second restraining means 160 second protruding restraining means 160a fourth restraining means 180 2, 4b, 6b, 7a 7d, 7e, 7f, 7g, 7h 8a, 8b, 8d, 8e, 8g

[0058] The first restraining means 150, the first projecting restraining means 150a, and the second restraining means 160 and the second restraining means 160a each form an angle with the casing 130, so that these restraining means are thereby partially further away from the longitudinal axis X and thus an obstacle width, width B according to Table 1, is ensured.

[0059] The third restraining means 170, the fourth restraining means 180, the fifth restraining means 270 and the sixth restraining means 280 each have a structure directed outwards from the casing 130, which structure can be a curved curvature or a curvature made up of several sections, such as a straight line or a curve, so that these restraining means are thereby partially further away from the longitudinal axis X and an obstacle width, width B according to Table 1, is thus ensured.

[0060] The schematic representation of the retention means is shown in the columns of the figures. The material for the inventive tube 120 can be formed at least partially from a flexible, environmentally friendly, degradable, and food-grade plastic. Degradable means home compostable and / or industrially compostable. Such degradable plastics include polybutylene succinate and polylactic acid, which are biologically based plastics and can be produced from renewable raw materials. Polyethylene can also be produced from renewable raw materials.

[0061] Examples of fossil-based plastics include polyamide and polyolefin. Another fossil-based plastic material is polyethylene. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 69708156T

[0008] FR 2775873A1

[0009] EP 3241448A1

[0010] DE 202016100772U1

[0025]

Claims

[1] Carrier (100) for storing natural casing (900), comprising: - a tube (120) with a casing (130) for receiving the natural casing (900) along a longitudinal axis X of the tube (120); the tube (120) having a first end (121) and a second end (122), - at least one first elastic retaining means (150) at the first end (121) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130) and / or at least one second elastic retaining means (160) at the second end (122) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130); wherein the first retaining means (150) is part of the casing (130), wherein the first retaining means (150) is folded out in the radial direction of the casing (130), wherein the first, unfolded, elastic retaining means (150) is so flexible that only when the natural casing (900) is pulled over the first retaining means (150) by a force exerted radially by the natural casing (900) gives way and is pulled onto the natural casing (900), without the first retaining means (150) being foldable, collapsible or unrollable, characterized by that the first retaining means (150) is partially separated from the casing (130) by a first slot (151). [2] Carrier (100) according to claim 1, characterized by that there is an angle between the unfolded first retaining means (150) and the casing (130). [3] Carrier (100) according to claim 1 or 2, characterized by that the second retaining means (160) is part of the casing (130), wherein the second retaining means (160) is folded out in the radial direction of the casing (130), wherein the second, unfolded, elastic retaining means (160) is so flexible that only when the natural casing (900) is pulled off by stripping off the natural casing (900), the second retaining means (160) gives way due to the force exerted radially by the natural casing (900) and the natural casing (900) slides out without the second retaining means (160) being foldable, collapsible or unrollable, wherein the second retaining means (160) is partially separated from the casing (130) by a second slot (161). [4] Carrier (100) for storing natural casing (900), comprising: - a tube (120) with a casing (130) for receiving natural casing (900) along a longitudinal axis X of the tube (120); the tube (120) having a first end (121) and a second end (122), - at least one third elastic retaining means (170) at the first end (121) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130) and / or at least one fourth elastic retaining means (180) at the second end (122) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130); wherein the third retaining means (170) is part of the casing (130), wherein the third retaining means (170) is curved outwards from the casing (130) along the longitudinal axis X of the tube (120), wherein the third, curved, elastic retaining means (170) is so flexible that only when the natural casing (900) is pulled over the third retaining means (170) it yields due to a force exerted radially by the natural casing and is pulled onto the natural casing (900), without the third retaining means (170) being foldable, collapsible or unrollable, characterized bythat the third retaining means (170) is partially separated from the casing (130) by a fourth slot (171) and a fifth slot (172). [5] Carrier (100) according to claim 4, characterized by that there is an angle between the bulged third retaining means (170) and the casing (130) which is less than 90°. [6] Carrier (100) according to claim 4 or 5, characterized by that the fourth, curved, elastic retaining means (180) is so flexible that only when the natural casing (900) is pulled off by stripping the natural casing (900) does the fourth retaining means (180) give way due to the force exerted radially by the natural casing and the natural casing (900) slides out without the fourth retaining means (180) being foldable, foldable or unrollable, wherein the fourth retaining means (180) is partially separated from the casing (130) by a sixth slit (181) and a seventh slit (182). [7] Carrier (100) according to one of claims 1 to 6, characterized by that the carrier (100) has at least one first end piece at the first end (121) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130), wherein the first end piece is a rubber ring (500), a plug-in part (600) or a cap part (700), wherein the rubber ring (500) can be slipped onto the tube (120), wherein the plug-in part (600) is fluid-permeable and can be inserted into the tube (120), wherein the plug-in part (600) is cylindrical and has a flat circular end on one side, wherein the cap part (700) is fluid-permeable and can be inserted into the tube (120), wherein the cap part (700) is funnel-shaped and slit in the longitudinal direction and has a flat circular end on its extended side, wherein the carrier (100) has the second retaining means (160) or the fourth retaining means (180) at the second end (122). [8] Carrier (100) according to one of claims 1 to 6, characterized by that the carrier (100) has at least one second end piece at the second end (122) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130), wherein the first end piece is a rubber ring (500), a plug-in part (600) or a cap part (700), wherein the rubber ring (500) can be slipped onto the tube (120), wherein the plug-in part (600) is fluid-permeable and can be inserted into the tube (120), wherein the cap part (700) is fluid-permeable and can be inserted into the tube (120), wherein the carrier (100) has the first retaining means (150) or the third retaining means (170) at the first end (121). [9] Carrier (100) for storing natural casing (900), comprising: - a tube (120) with a casing (130) for receiving natural casing (900) along a longitudinal axis X of the tube (120); the tube (120) having a first end (121) and a second end (122), - at least one fifth elastic retaining means (270) at the first end (121) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130) and / or at least one sixth elastic retaining means (280) at the second end (122) of the tube (120) for preventing the natural casing (900) from slipping off the casing (130); wherein the fifth elastic retaining means (270) is part of the jacket (130), the fifth elastic retaining means (270) is partially separated from the casing (130) by slots. wherein the sixth elastic retaining means (280) is part of the jacket (130), the sixth elastic retaining means (280) is partially separated from the casing (130) by slots. wherein the third, curved, elastic retaining means (170) is so flexible that only when the natural casing (900) is pulled over the third retaining means (170) it yields due to a force exerted radially by the natural casing and is pulled onto the natural casing (900), without the third retaining means (170) being foldable, collapsible or unrollable, characterized by , that the fifth retaining means (270) is capable of being curved outwards from the longitudinal axis X of the tube (120) by the casing (130) or inwards towards the longitudinal axis X of the tube (120), wherein the sixth elastic retaining means (280) is capable of being curved outwards from the longitudinal axis X of the tube (120) by the casing (130) or inwards towards the longitudinal axis X of the tube (120). [10] Carrier (100) according to one of the preceding claims, characterized by that the material of the tube (120) can be formed from a fossil plastic or from a biologically based plastic. [11] Carrier (100) according to one of claims 7 or 8, characterized by that the material of the end piece can be made from a fossil plastic or from a biologically based plastic. [12] Carrier (100) according to claim 10 or 11, characterized by that the biologically based plastic can be formed at least partially from polylactic acid, polybutylene succinate or polyethylene from renewable raw materials. [13] Carrier (100) according to claim 10 or 11, characterized by that the fossil plastic can be formed at least partially from a polyamide or a polyolefin. [14] Carrier (100) according to claim 13, characterized by that the fossil plastic can be made at least partially from polyethylene.

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