JP4817422B2 - Cylindrical package, packaging method and packaging apparatus - Google Patents

Description

  The present invention relates to a tubular package suitable for packaging liquid or kneaded food, in particular, food subjected to heat treatment after packaging of sausage, etc., and a packaging method and packaging apparatus for carrying out the method.

  As a packaging form for articles having fluidity such as liquid or kneaded foods such as pickles, cheeses, sausages, etc., the article or its raw material in a cylindrical film in which side ends of a long synthetic resin film are laminated and fused. A cylindrical package formed by filling both ends of the film and sealing the both ends is widely used. FIG. 6 shows a schematic diagram of a cylindrical package. In the figure, 111 is a synthetic resin film, 112 is a fusion part formed by fusing film side ends, and 113 is a sealing material made of a metal wire or a synthetic resin wire.

  Such a packaging operation of the cylindrical package is usually performed in a continuous process from the formation of the cylindrical film to the sealing. Specifically, while feeding out a belt-shaped synthetic resin film, the side ends are fused together to form a cylindrical film, and the cylindrical film is formed by continuously filling the cylindrical film with an article to be packaged. Then, the cylindrical body is squeezed from the outside at a predetermined interval to push the inner package, the film of the pushed portion is focused and sealed with a sealing material, and the film is cut.

JP 2005-271950 A

  An object of the present invention is to provide a packaging method using a previously proposed metal wire or synthetic resin wire as a sealing material, providing a more reliable sealing step and providing a package with excellent sealing performance at a high yield. It is to provide.

The first of the present invention is a packaging method of a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packaged with a metal wire or a synthetic resin wire,
A cylindrical film forming step of continuously forming a tubular film by continuously laminating and fusing side end portions of the film while continuously feeding out a belt-shaped synthetic resin film,
A tubular body forming step of continuously filling the tubular film with an article to be packaged to form a tubular body;
The cylindrical body is continuously squeezed from the outside at a predetermined interval to push the object to be packaged inside, and a converging part forming step for converging the film in the area where the object to be packaged is pushed,
Sealing and cutting step of sealing the converging part with a metal wire or a synthetic resin wire, and cutting the film so that the wire is located at both ends of the package;
Have
In the converging part forming step,
It is divided around a straight line connecting the center of the deepest part of the drawing-in part and the central part of the edge of the focusing plate opposite to the deepest part, and one is shifted in the thickness direction by the thickness with respect to the other 2 Using two focusing plates, two focusing plates facing each other on the same horizontal plane across the film are put together, and the sides of the two focusing plates face each other with the film sandwiched in the horizontal direction. The film is focused so that the cross-sectional shape is substantially circular.

  The packaging method of the present invention includes the following configuration as a preferred embodiment.

  In the converging portion forming step, tension is applied to the film in a direction in which the converging portion is separated from a position where the film is cut in the cutting step.

  In the sealing / cutting step, a linear synthetic resin wire is formed into an O-shape with the converging part interposed therebetween, the ends of the synthetic resin wire are brought into contact with each other, and ultrasonic waves are applied to the contact part. Put on and seal.

  In the sealing / cutting step, a linear metal wire is caulked in an O-shape with the converging portion interposed therebetween, and sealed.

  In the second aspect of the present invention, an article to be packaged is filled in a cylindrical film in which side ends of a long synthetic resin film are overlapped and fused, and both ends of the film are made of a metal wire or a synthetic resin wire. It has the sealing part formed by sealing, and was packaged by the packaging method of the cylindrical package of the said invention.

The third aspect of the present invention is a packaging device for a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packaged with a metal wire or a synthetic resin wire,
Means for continuously feeding a belt-shaped synthetic resin film;
Means for continuously forming a tubular film by overlapping and fusing side edges of the film;
Means for continuously filling the tubular film with an article to be packaged to form a tubular body;
Means for continuously squeezing the cylindrical body from the outside at a predetermined interval to push the inner packaged object,
There are two converging plates arranged opposite to each other on the same horizontal plane with the film in the area where the packaged object is pushed away, and the two converging plates are provided at the center of the deepest part of the drawing-in part and the deepest part. It is divided around a straight line connecting the center of the opposite edge of the focusing plate, and one side is shifted in the thickness direction by the thickness with respect to the other. A converging part forming means for converging the film so that the horizontal cross-sectional shape of the converging part is substantially circular while facing the film in the direction;
Sealing means for sealing the sandwiched portion with a metal wire or a synthetic resin wire; and
Means for cutting the film so that the metal wire or the synthetic resin wire is located at both ends of the package;
At least.

  In the packaging apparatus of the said invention, the following structure is included as a preferable aspect.

  The converging plate of the converging portion forming means has an opening that extends in a V shape toward the film, and has a film drawing portion that extends in a U shape further outward from the bottom of the V shape. By moving the focusing plates forward with respect to the film, the film is squeezed from the opening into the drawing portion to form a focusing portion having a substantially circular horizontal cross section.

  The converging plate divides the straight line connecting the center of the deepest part of the lead-in part and the central part of the end of the converging plate opposite to the deepest part, and one of them in the thickness direction with respect to the other. It will be shifted.

  The focusing means moves in a direction away from the sealing / cutting means so as to apply tension to the film.

  The sealing means forms a linear synthetic resin wire into an O-shape with the converging part sandwiched between them, means for bringing the ends of the synthetic resin wire into contact with each other, and applying ultrasonic waves to the contact part And at least means.

  The sealing means includes at least means for caulking a linear metal wire rod into an O shape with the converging portion interposed therebetween.

  In the present invention, since the film is tightly focused and sealed by a pair of focusing plates arranged on the same horizontal plane, high sealing performance can be obtained, and the film can be prevented from being broken or bitten. Sealing failure is also prevented. In particular, by applying tension to the film of the converging part, the density of the converging part is further increased and higher sealing performance can be obtained, but in the present invention, the converging part is firmly sandwiched between the side surfaces of the pair of converging plates. Therefore, it is possible to apply a good tension to the film, and it is possible to efficiently package a package excellent in sealing performance and preventing the film from being broken or bitten in a high yield.

  Hereinafter, the tubular package, the packaging method, and the packaging apparatus of the present invention will be described in detail with reference to the drawings.

  The tubular package of the present invention is basically the same as the form shown in FIG. That is, it is a form in which an article to be packaged is filled in a cylindrical film in which side edges of the long synthetic resin film 111 are overlapped and fused, and both ends of the film are sealed with a sealing material 113, In the present invention, the sealing material 113 is sealed using a metal wire or a synthetic resin wire. Sealing is performed by caulking when a metal wire is used, or by ultrasonic fusion between end portions when a synthetic resin wire is used.

  In FIG. 1, the schematic of an example of the preferable form of the packaging apparatus of this invention is shown. The present embodiment is a form in which a synthetic resin wire on a straight line is formed into an O-shape, the ends are fused together and sealed, and further, a fusing by applying ultrasonic waves is used as a film cutting means. is there.

  In FIG. 1, 1 is a feed pump, 2 is a filling nozzle, 3 is a cylinder making device, 4 is a roll, 5 is a synthetic resin film, 6 is an electrode, 7 is an article to be packaged, 8 is a transfer roller, 9 is a squeeze roller, 10 is sealing / cutting means, 11a, 11b, 12a and 12b are focusing plates, 14a and 14b are sealing horns, 15a and 15b are sealing anvils, 16 is a fusing horn, and 17 is a fusing anvil. .

  In the apparatus of FIG. 1, the filling nozzle 2 is connected to a feed pump 1, a cylinder making device 3 is provided at an intermediate portion of the filling nozzle 2, and a strip-shaped synthetic resin film 5 fed out from a roll 4 is made of this cylinder When passing through the device 3, it is rounded into a cylinder. And the side edge parts of the film 5 rolled up and piled up in the cylinder shape are melt | fused by the electrode 6, and a cylindrical film is formed. On the other hand, the article 7 is filled into the tubular film from the filling nozzle 2 to form a tubular body. The cylindrical body is nipped by the transfer roller 8 and transferred to the lower side of the paper. Next, the squeezing roller 9 squeezes the cylindrical body from the outside at a predetermined interval to push the inner package 7 and the film in the pushed area. Are converged by the sealing / cutting means 10 to form a film converging portion. At the film converging portion, an ultrasonic wave is applied to the film 5 for fusing, and at the same time, before and after the fusing portion, the film converging portion is synthetic resin wire And a package with both ends sealed with a synthetic resin wire is obtained. All the above series of steps are performed continuously.

  2 to 4 are enlarged perspective views of the focusing means in the sealing / cutting means 10 of FIG. 2 is a perspective view showing a state immediately before focusing, FIG. 3 is a perspective view showing a state immediately after focusing, and FIG. 4 is a diagram immediately before focusing (a), during focusing (b), and immediately after focusing (c). FIG. In these drawings, the ultrasonic application means is omitted for convenience.

  In the present invention, as shown in FIG. 2 and FIG. 3, the film in the area where the package 7 is pushed is focused at two locations, upper and lower, with sealing means and cutting means (ultrasonic application means) not shown. Focusing is performed by the plates 11a and 11b and 12a and 12b.

  As shown in FIG. 4A, the converging plates 11a and 11b have an opening 11c extending in a V shape toward the film 18, and extend in a U shape further outward from the bottom of the V shape. 11d. Therefore, when the focusing plates 11a and 11b are moved forward with the film 18 interposed therebetween, the film 18 is tucked into the drawing portion 11d from the opening portion 11c [FIG. 4B], and the R shape at the bottom of the drawing portion 11d. As a result, the converging portion 19 is formed in which the horizontal cross-sectional shape of the film is substantially circular [FIG. 4 (c)]. The other set of focusing plates 12a and 12b has the same configuration as 11a and 11b, and as shown in FIG. 3, the film 18 is focused at two locations above and below at a predetermined distance. Form.

  In this example, the focusing plates 11a and 11b are divided around a straight line (partition line 11e) connecting the central portion of the deepest portion of the lead-in portion 11d and the central portion of the focusing plate end opposite to the deepest portion, On the other hand, 11a1 and 11b1 are shifted in the thickness direction (vertical direction) by the thickness with respect to the other 11a2 and 11b2. In this example, in order to compensate for the strength of the focusing plates 11a and 11b, the divided pieces 11a1, 11a2, 11b1, and 11b2 are slightly extended from the dividing line 11e to the other side, and 11a1 and 11a2, 11b1 and 11b2 are respectively formed. A “shiro” is provided for integration. The focusing plate 11a may be formed by individually laminating 11a1 and 11a2, 11b1 and 11b2 formed individually, and bonding and integrating them at the “slot” portion.

  When the focusing plates 11a and 11b are arranged on the same horizontal plane, as shown in FIG. 4 (a), the divided piece 11a2 and the lower part in the thickness direction are located in the upper part in the thickness direction in the forward direction (the directions of arrows A and B in FIG. 2). 4b, the upper surface of the divided piece 11b2 is placed on the lower surface of the divided piece 11a2 located in the upper part in the thickness direction, as shown in FIG. 4 (b). Overlapping up and down so that touches. Similarly, the division piece 11b1 located in the upper part in the thickness direction and the division piece 11a1 located in the lower part in the thickness direction are opposed to each other and overlap each other. That is, two identical ridges are superposed as if they were engaged with the blades facing each other with the blades open. Eventually, the converging part 19 is formed in a substantially circular shape by the R shape of the deepest part of the drawing-in part (FIG. 4C). Moreover, in the part which contact | connects the converging plates 11a and 11b of the condensing part 19, the side surface of the division | segmentation piece 11a2 located in the thickness direction upper part and the side surface of 11b1 oppose on both sides of the converging part 19, and it is similarly located in the thickness direction lower part. The side surface of the split piece 11a1 and the side surface of 11b2 are opposed to each other with the converging part 19 interposed therebetween, and the converging part 19 is sandwiched between them.

  Note that the horizontal cross section of the converging part is substantially circular preferably means a perfect circle or a shape close to this, but it does not have to be exactly a perfect circle and can be visually observed even if there is some distortion. Any shape that is recognized as being substantially circular is regarded as a circular category in the present invention.

  In the present invention, preferably, as shown in FIGS. 3 and 4 (c), each of the converging portions 19 is sandwiched by the converging plates 11a, 11b, 12a, and 12b. The focusing plates 11a and 11b positioned at the top of the focusing unit are vertically moved upward (in the direction of arrow A), and the focusing plates 12a and 12b positioned at the bottom of the sealing means are vertically moved down (in the direction of arrow B), respectively. Tension is applied to 19. This prevents the film from spreading in the horizontal direction at the converging portion 19 between the converging plates 11a, 11b and 12a, 12b, and is dense as with the converging portions of the converging plates 11a, 11b, 12a, 12b. The sealed state can be maintained and sealed, and higher sealing performance can be obtained.

  The means for moving the focusing plates 11a, 11b, 12a, 12b in the vertical direction is not particularly limited. For example, a cam plate is disposed between the upper and lower focusing plates, and the cam plate is advanced with respect to the film. By doing so, tension can be applied to the converging part 19.

  In this example, as described above, in the portions focused by the focusing plates 11a, 11b, 12a, and 12b, the focusing portion 19 is sandwiched by the side surfaces of the pair of focusing plates, so that the focusing portion 19 is in the vertical direction. Can be easily tensioned by pulling on

  The material of the focusing plates 11a, 11b, 12a, 12b used in the present invention is not limited, but is usually made of metal or synthetic resin.

  In this way, in the film converging unit 19 that is focused and desirably applied with tension, the horn 14a and the anvil 15a and the horn 14b and the anvil 15b are sealed by ultrasonic fusion using a synthetic resin wire. Specifically, a linear synthetic resin wire is formed into an O-shape with the converging portion 19 interposed therebetween, the ends of the synthetic resin wire are brought into contact with each other, and ultrasonic waves are applied to the contact portion to be fused. Can be sealed.

  In the present invention, a metal wire can be used as the sealing material, and specifically, a linear metal wire can be caulked and sealed in an O shape with the converging portion 19 in between.

  The film cutting means according to the present invention is not particularly limited, and may be the same as the conventional method using a cutting blade. However, when the fusing means is used, the film is cut at the same time as the film is cut. It is preferable because they can be fused together to improve the sealing performance of the package. In particular, when fusing by applying ultrasonic waves is used, it is preferable that the ultrasonic applying means for sealing and the ultrasonic applying means for fusing can be formed integrally. Specifically, the sealing horns 14a and 14b and the fusing horn 16 in FIG. 1 are integrally configured, and the sealing anvils 15a and 15b and the fusing anvil 17 are integrated to form a sealing process. And the fusing step can be performed simultaneously without adjusting the timing. Since the sealing portion and the fusing portion are very close to each other, it is very advantageous in terms of space to integrally form the ultrasonic wave application means in this way.

  FIGS. 5A and 5B are diagrams showing a sealing portion using the synthetic resin wire of the packaging body of the present invention, FIG. 5A is a partially enlarged perspective view, FIG. 5B is a cross-sectional view, and 24 in FIG. It is a kimono.

  In the present invention, the cross-sectional shape of the metal wire or synthetic resin wire 21 is not particularly limited, but a circular shape is preferable in order to always obtain the same sealing strength. Moreover, in a normal food packaging body, the diameter is preferably about 1 to 5 mm, and the length is preferably about 6 to 24 mm.

  The converging plates 11a, 11b, 12a and 12b obtained by integrating the divided pieces shown in FIG. 2 and FIG. 4A in the thickness direction are used as the converging means, and the sealing horns 14a and 14b shown in FIG. The packaging body was sealed using an ultrasonic wave application means in which the fusing horn 16 was integrated and the sealing anvils 15a and 15b and fusing anvil 17 were integrated. As a synthetic resin film, a vinylidene chloride resin film was used, and fish meat was filled as an object to be packaged. The length of the package was 230 mm, and the diameter of the trunk of the package was 30 mm. As the synthetic resin wire, one having a thickness of 1.7 mm and a width of 3 mm was used. The synthetic resin wire was molded into a circle having a cross-sectional diameter of 2.2 mm and the length was 18 mm. 1000 packages were continuously packaged in this form.

  The obtained package was placed in a steam atmosphere at 120 ° C. for 1 hour as a retort process. Thereafter, whether or not fine holes were formed in the package was measured using a conductive tester. Specifically, the (+) side of the tester is inserted into the center of the package body, the (−) side of the tester is immersed in a container containing 5% salt water, and then the sealing portions at both ends of the package body are sealed with the 5% salt water. And the continuity was measured. When the sealing part has a hole, clear conduction is recognized.

  As a result, all the packaging bodies were sealed well, and no sealing failure occurred.

It is the schematic of embodiment of the packaging apparatus of this invention. It is an expansion perspective view of the focusing means of the packaging apparatus of FIG. FIG. 2 is a perspective view showing a state in which a film is focused by the focusing means of FIG. It is a top view which shows the focusing process of the film using the focusing means of FIGS. It is a figure which shows the sealing part of the package of this invention. It is a schematic diagram of the package of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Feed pump 2 Filling nozzle 3 Tube making apparatus 4 Roll 5 Synthetic resin film 6 Electrode 7 Packaged object 8 Transfer roller 9 Drawing roller 10 Sealing / cutting means 11a, 11b, 12a, 12b Focusing plate 11a1, 11a2, 11b1, 11b2 Dividing piece 11c Opening part 11d Pull-in part 11e Dividing line 14a, 14b Sealing horn 15a, 15b Sealing anvil 16 Fusing horn 17 Fusing anvil 18 Film 19 Film converging part 21 Synthetic resin wire 24 Fusion part 111 Synthetic resin Film 112 Fusion part 113 Sealing material

Claims (10)

It is a packaging method of a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packed with a metal wire or a synthetic resin wire,
A cylindrical film forming step of continuously forming a tubular film by continuously laminating and fusing side end portions of the film while continuously feeding out a belt-shaped synthetic resin film,
A tubular body forming step of continuously filling the tubular film with an article to be packaged to form a tubular body;
The cylindrical body is continuously squeezed from the outside at a predetermined interval to push the object to be packaged inside, and a converging part forming step for converging the film in the area where the object to be packaged is pushed,
Sealing and cutting step of sealing the converging part with a metal wire or a synthetic resin wire, and cutting the film so that the wire is located at both ends of the package;
Have
In the converging part forming step,
It is divided around a straight line connecting the center of the deepest part of the drawing-in part and the central part of the edge of the focusing plate opposite to the deepest part, and one is shifted in the thickness direction by the thickness with respect to the other 2 Using two focusing plates, two focusing plates facing each other on the same horizontal plane across the film are put together, and the sides of the two focusing plates face each other across the film in the horizontal direction. A packaging method for a cylindrical package, wherein the film is converged so that the horizontal cross-sectional shape is substantially circular.   The method for packaging a cylindrical package according to claim 1, wherein in the converging part forming step, tension is applied to the film in a direction in which the converging part is separated from a position where the film is cut in the cutting step.   In the sealing / cutting step, a linear synthetic resin wire is formed into an O-shape with the converging part interposed therebetween, the ends of the synthetic resin wire are brought into contact with each other, and ultrasonic waves are applied to the contact part. The packaging method of the cylindrical package body of Claim 1 or 2 which makes it wear and seals.   The packaging method for a cylindrical package according to claim 1 or 2, wherein, in the sealing / cutting step, a linear metal wire is crimped and sealed in an O shape with a converging portion interposed therebetween.   Sealing in which a packaged object is filled in a cylindrical film in which side ends of a long synthetic resin film are laminated and fused, and both ends of the film are sealed with a metal wire or a synthetic resin wire A cylindrical packaging body having a portion and packaged by the packaging method for a cylindrical packaging body according to any one of claims 1 to 3. It is a packaging device for a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packed with a metal wire or a synthetic resin wire,
Means for continuously feeding a belt-shaped synthetic resin film;
Means for continuously forming a tubular film by overlapping and fusing side edges of the film;
Means for continuously filling the tubular film with an article to be packaged to form a tubular body;
Means for continuously squeezing the cylindrical body from the outside at a predetermined interval to push the inner packaged object,
There are two converging plates arranged opposite to each other on the same horizontal plane with the film in the area where the packaged object is pushed away, and the two converging plates are provided at the center of the deepest part of the drawing-in part and the deepest part. It is divided around a straight line connecting the center of the opposite edge of the focusing plate, and one side is shifted in the thickness direction by the thickness with respect to the other. A converging part forming means for converging the film so that the horizontal cross-sectional shape of the converging part is substantially circular at the same time facing the film in the direction,
Sealing means for sealing the sandwiched portion with a metal wire or a synthetic resin wire; and
Means for cutting the film so that the metal wire or the synthetic resin wire is located at both ends of the package;
A packaging apparatus for a cylindrical packaging body, comprising at least   The converging plate of the converging portion forming means has an opening that extends in a V shape toward the film, and has a film drawing portion that extends in a U shape further outward from the bottom of the V shape. 7. The packaging device for a cylindrical package according to claim 6, wherein the converging plates are moved forward with respect to the film to form a converging portion having a substantially circular horizontal cross-section by dragging the film from the opening into the drawing portion. .   The packaging apparatus for a cylindrical package according to claim 6 or 7, further comprising means for applying tension to the film by moving the converging means away from the sealing / cutting means.   The sealing means forms a linear synthetic resin wire into an O-shape with the converging part sandwiched between them, means for bringing the ends of the synthetic resin wire into contact with each other, and applying ultrasonic waves to the contact part A tubular packaging body packaging apparatus according to any one of claims 6 to 8, comprising at least means.   The packaging device for a cylindrical packaging body according to any one of claims 6 to 8, wherein the sealing means includes at least means for caulking a linear metal wire rod into an O shape with the converging portion interposed therebetween.

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