JPH01124568A - Cylindrical film package filled with processed food - Google Patents

Abstract

PURPOSE:To tear a film easily while increasing the film weld strength by a method wherein film rims of a cylindrical package are aligned together and welded so that the rims form the second weld line along the outer face of a cylindrical package, and a cut is made on the second weld line. CONSTITUTION:Rims 1a and 1b of a film 1 are joined with inner surfaces facing each other which is an extension of an inner wall of a cylindrical package 10, and aligned together. The aligned portion is welded along a first weld line S1. The film rims 1a and 1b protruding from the first weld line S1 are bent in one direction and aligned to an outer surface of the package 10. Three films, the film rims 1a and 1b and the film 1 which composes the package 10 are welded together on a second weld line S2 by high frequency or supersonic wave. The second weld line S2 has a cut 1 (a portion not welded) on its mid and a notch is placed at 1. This allows easy tearing of the film while strengthening the weld portion.

Description

[Detailed Description of the Invention] [Technical Summary] The present invention relates to a package in which processed foods such as sausages and cheese are filled inside a cylindrical film, and in particular, the package is designed to make it easier for consumers to open the film. This invention relates to a cylindrical film package.

(Background of the Invention) FIG. 11 shows a conventional example of a cylindrical film package filled with processed foods such as sausages.

In this type of package, as shown in the cross-sectional view of FIG.
and 1b are brought together, and this joint is welded by high frequency welding or ultrasonic welding means to form a seal line S, thereby forming a cylindrical casing 5.

In the case of sausage, the cylindrical casing 5 is filled with processed meat, and in the case of stick cheese, the cylindrical casing 5 is filled with processed cheese. Both ends of the casing 5 in the longitudinal direction are constricted, and the constricted portions are tightened and closed by clamp members 2 made of metal such as aluminum.

For example, in the case of sausages, processed meat is filled into the casing 5 and then subjected to a boiling process. In this boiling process, the internal pressure of the casing increases, so tension acts on the film 1. This tension acts on the seal line S, and conventionally, as shown in FIG. 12, the film edges 1a and 1b are overlapped and welded in a substantially planar state. Therefore, even if a force indicated by F acts on the seal line S due to the film tension, the welding strength of the seal line S against this force F is high, making it difficult for the casing 5 to break during the boiling process.

[Problem that the invention seeks to solve]

However, in the above-mentioned cylindrical film package, the film edge 1b protruding to the outside of the casing 5 is short, so the film edge 1a cannot be grasped sufficiently with fingers, and furthermore, the seal line is formed over the entire length. Since there is no trigger for tearing the film S, it is impossible to peel off the film 1 from the film edge 1a. Therefore, when a consumer wants to peel off the film 1, he or she will make a cut in the film 1 with a knife, for example, and use this cut as a trigger to peel it off from the contents, but if the consumer does not have a knife at hand, he or she will peel off the film 1. It is extremely difficult to do so.

In addition, in the case of relatively small packages such as stick cheese, a tearing tape colored red or the like is attached, and by pulling this tearing tape, the film 1 is torn. . However, since tear tape is expensive, conventional packaging using long tapes is expensive and uneconomical. Further, the tear tape is generally attached over the entire length of the package in the longitudinal direction, and both ends thereof are fastened together with the film 1 by the clamp members 2. Therefore, when the tear tape is peeled off from the casing 5, both ends of the tape will attract the clamp member 2, causing the entire package to bend and the contents to be deformed.

The present invention solves the above-mentioned conventional problems, and makes it possible to easily peel off the film without providing a tear tape, and to make the seal strong enough to improve the boiling process for sausages. It is an object of the present invention to provide a cylindrical film package that can sufficiently withstand increases in internal pressure.

[Specific Means for Solving the Problems] The present invention is characterized in that the edges of the film are welded together to form a cylindrical casing, and the cylindrical casing is filled with a processed food. In a film package in which both ends in the longitudinal direction of the casing are closed, the edges of the film are brought together in a state in which their palms are in contact with each other so that their continuous surfaces contact the inner surface of the casing, and this joined part forms the first seal line. and the two film edges extending outwardly from the first seal line are brought together to the outer surface of the casing such that the two film edges and the film forming the casing are welded together. It is characterized in that it is welded by a second seal line, and the second seal line is formed with intermittent portions.

[For production]

In this cylindrical film package, the edges of the two films joined to the outer surface of the casing are moved to the outer surface of the casing by grasping the edges of the film with your fingers at the intermittent portions of the second seal line and pulling this portion. It peels off from the seal line and, in some cases, from the first seal line portion, causing tears in the film constituting the casing in this portion. As a result, the two edges of the film function in much the same way as conventional tear tape, and the peeled portion of the edge of the film can be used to create an opportunity to tear the casing. Preferably, notches are made in the edge of the film at the intermittent portions of the second seal line, so that the edge of the film can be separated from these portions, making it easier to peel off the edge of the film.

In addition, the edges of the film are welded together by a first seal line, and the edges of the film extending outward from this seal line form a second seal against the outer surface of the casing. Because it is welded by wire,
Sufficient welding strength of the casing film can be ensured. Therefore, even if the internal pressure of the casing increases during the boiling process, as in the case of sausages, the seal line portion can sufficiently withstand the increase in internal pressure of the casing.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings of FIGS. 1 to 1O.

FIG. 1 is a front view showing a cylindrical film package according to a first embodiment of the present invention.

In this embodiment, a casing 10 is formed by winding a film 1 made of vinylidene chloride or the like into a cylindrical shape. The film 1 constituting this casing 10 has an edge 1
A and 1b are welded by high frequency or ultrasonic waves, and this welding is performed by two seal lines S1 and S2. As shown in FIG. 2, first, the edges 1a and 1b of the film 1 are brought together in a state in which the faces that are continuous with the inner surface of the casing 10 are joined, and this joined part is welded by the first seal line S1. It is sealed. Further, as shown in FIG. 3, the film edges 1a and 1b projecting outward from the first seal line S1 are aligned with the outer surface of the casing 10, and the film edges 1a, 1b and the casing 10 are aligned at the seal line S2. The three films 1 forming the structure are welded together by high frequency or ultrasonic waves. As shown in FIG. 1, the second seal line S2 has an intermittent portion l in the middle thereof. A notch 3 is provided in this intermittent part.

In the case of sausage, the cylindrical casing 10 is filled with processed meat, and in the case of stick cheese, the casing 10 is filled with processed cheese. Both ends in the longitudinal direction of the casing 10 are then squeezed and closed by tightening with metal clamp members 2 made of aluminum or the like.

FIG. 4 shows an example of an apparatus for forming the casing 10. Reference numeral 11 is a stuffer nozzle;
This stuffer nozzle 11 is used to fill processed meat and the like. A molded member 12 is provided on the outer periphery of the stuffer nozzle 11.
is provided.

Film 1 is fed by feed rollers 13 and 14;
It is molded into a cylindrical shape by the molding member 12. Molding member 1
2 has a pair of guide pieces 12a and 1 facing each other with a gap.
2b, and these guide pieces 12a and 12b align the edges 1a and 1b of the film 1 so that their palms are joined. High frequency electrodes 15 and 1 are provided on the lower side of the molded member 12.
6 are provided facing each other. After the edges 1a and 1b of the cylindrical casing 10 are brought together by the guide pieces 12a and 12b, they are welded together by the high frequency electrodes 15 and 16, and the first seal line S1 shown in FIG. 2 is formed. It is formed. Further below, there are other high frequency chambers [17 and 1
8 is provided.

One high-frequency electrode 17 faces the outside of the film 1 being sent out, and the other high-frequency electrode 18 faces the inside of the film 1 being sent out.

Film edges 1a and 1b after the first seal line Sl is formed by the high frequency electrodes 15 and 16 located above
is aligned with the outer surface of the casing 10, and the high frequency electrode 1
7 and 18, the three film edges 1a, lb and the film 1 forming the casing are welded together, forming a second seal line S2 shown in FIG. Further, reference numerals 19 and 20 indicate feed rollers, and the casing 10 is continuously fed downward by these feed rollers 19 and 20. When forming the second seal line S2, the intermittent portion 1 shown in FIG. 1 is formed by temporarily stopping the current supplied to the high frequency electrode 17 (positive electrode). Although not shown in FIG. 4, a guide plate is provided between the high-frequency electrode 15.16 and the high-frequency electrode 17.18, and the film edges la,' are provided after the first seal line S1 is formed. If the guide plate allows the guide plate to tilt the second seal line S2 toward the outer surface of the film constituting the casing, the high-frequency electrodes 17 and 18 can easily form the second seal line S2.

The contents are supplied from the stuffer nozzle 11 to the cylindrical casing 10, and the clamp member 2 is tightened by the clamp device provided further below the feed rollers 19, 20. A package as shown in FIG. 1 is formed. Note that the notch 3 shown in FIG. 1 can be added after the package is completely manufactured, but it is also possible to add a notch forming device to the device shown in FIG. 4 to form the first seal line S1. It is also possible to form the notch 3 automatically between the time the second seal line S2 is formed and the notch 3 formed.

In the cylindrical film package shown in FIG. 1, an example of a method for peeling off the film 1 from the contents is to insert a finger into the intermittent portion 1 of the second seal line S2 and peel off the film edge 1a from the notch 3. Cut 1b. Then, as shown in FIG.
2, the film edges 1a and 1b become tape-like and are separated from the film 1 and peeled off.

This causes the film 1 of the casing 10 to be torn. The details are as follows: First, by pulling the film edges 1a and lb, the portion indicated by A in FIG. 3 is torn.

i.e. two film edges 1a drawn by fingers,
Since there is one film on the casing 10 side with respect to lb, by pulling the film edges 1a and 1b, the one film 1 on the casing side is torn at the seal line S2. Subsequently, the film edges 1a and 1b are pulled, and the film edges 1a and 1b are separated at the seal line S1 indicated by B in FIG. 1a and 1b come to be peeled off like a tape. In some cases, the film 1 constituting the casing 10 may be torn not only in the A section but also in the 8 section. Therefore, as the film edges 1a and 1b are peeled off in a tape-like manner, the tear in the film 1 constituting the casing 10 expands, and the contents are exposed.

The method shown in FIG. 6 is also effective for peeling off the film 1 of this package. In this method, first use your finger to open the notch 3.
The film edges 1a and 1b are separated from the part. The part indicated by D among the film edges 1a and lb is the casing 10
When it is peeled off, the film 1 constituting the casing 10 is torn at least from the part indicated by A in FIG. 3 as described above. When the end of the package is then pressed with a finger to inflate the contents, the torn portion of the film 1 expands and the contents are exposed, as shown in FIG.

Note that what is shown in FIGS. 5 and 6 is only an example of how to open the package shown in FIG. The film of the casing 10 can be easily peeled off by breaking the film edges 1a, lb from the notch 3 at the intermittent portion 1.

7 and 8 show a second embodiment of the invention.

In this embodiment, the notches indicated by reference numeral 3 in FIG. 1 are not provided at the intermittent portions of the second seal line S2. However, even if notch 3 is not provided, film 1
Peeling it off is easy. As an example of the method, the film edge 1 is
Grasp a and lb with your fingers and pull the film edges 1a and lb as shown in FIG. As a result, the film 1 of the casing 10 is torn at the seal line S2, or in some cases at the seal line S1, and the contents are exposed. Even with this structure without the notch 3, the work of peeling off the film is easy.

In the embodiment shown in FIGS. 1 to 8 above, the casing 10
Film edges 1a and 1b constituting the film are welded at two locations by a first seal line S1 and a second seal line S2. As shown in FIG.
If the palms of the seal line S1 are joined together and welded with only one seal line St, the strength of the seal line S1 against the force in the direction F is weak, but in the above embodiment, as shown in FIG. Since the second seal line S2 is provided in addition to the line S1, the welding strength is increased. Therefore, as in the case of sausages, the product is subjected to eight boiling steps after packaging is completed, and even if the internal pressure is increased and a force in the direction of F due to film tension is applied, sufficient strength can be exerted.

In addition, if it is necessary to further increase the strength of the sealing part, as shown in FIG. It is also possible to weld this film tape 11 together. As the film tape 11, it is possible to use a conventional tear-opening tape as is. In this way, the reinforcing film tape 11
By providing this, it is possible to increase the number of films to be welded at the seal lines S1 and 32, and it is possible to increase the welding strength by high frequency or the like. Alternatively, as shown in FIG. 10, the strength of the seal portion can be increased by attaching a reinforcing film tape 11 to the outside of the film edge 1a and welding this film tape 11 to the seal lines St and Sl. becomes possible.

[Effects of the Invention] As described above, according to the present invention, the edges of the film forming the cylindrical casing are sealed in accordance with the state of palms together, and the edges of the film are further aligned along the outer surface of the film of the casing. 2 seal line is formed, and a defect is provided in the middle of this second seal line, so by grasping the edge of the film with your fingers at the defect part of this second seal line and peeling it off. The film can be easily torn and the film can be easily peeled off from the contents. Furthermore, since two seal lines are formed, the strength of the seal portion can be increased compared to a case where only a palm-to-face seal is used. Therefore, even if the internal pressure increases during the boiling process for sausages, the casing will not be destroyed from the sealed portion.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a cylindrical film package according to a first embodiment of the present invention, FIGS. 2 and 3 are enlarged cross-sectional views showing a welded part by a seal line, and FIG. 4 is a cylindrical film package. 5 and 6 are front views showing an example of the method for opening the cylindrical film package according to the first embodiment, and FIG. 7 is a perspective view showing an example of the manufacturing apparatus according to the second embodiment of the present invention. FIG. 8 is a partial front view showing an example of the method for opening the cylindrical film package according to the second embodiment; FIG. 9 and FIG. 1θ are each according to other embodiments. FIG. 11 is a front view of a conventional cylindrical film package, and FIG. 12 is a cross-sectional view of a conventional cylindrical film package. 1... Film, la, lb... Film edge, 2
... Clamp member, 3... Notch, 10... Cylindrical casing, Sl... First seal line, Sl...
Second seal line, 1... Intermittent portion of the second seal line. Figure 4 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 and Figure 12

Claims (1)

[Claims] In a film packaging body in which the edges of the film are welded together to form a cylindrical casing, the cylindrical casing is filled with a processed food, and both longitudinal ends of the casing are closed. The edges of the film are aligned in such a way that their continuous surfaces touch the inner surface of the casing, and this joined part is welded by a first seal line, and further extends outward from the first seal line. The two film edges are brought together on the outer surface of the casing, and the two film edges and the film forming the casing are welded together by a second seal line, and this second seal A cylindrical film package filled with a processed food, characterized in that lines are formed with intermittent parts.