JP2012062066A - Sealed package body and manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tubular sealed package body that has a simple structure and can be easily opened.SOLUTION: The sealed package body 1 includes: a tubular body film 2 filled with a content B; a clip 3 for tying ends of the body film 2; and an opening part 5 for opening the body film 2 that is tied with the clip 3 to seal the content B in the body. The opening part 5 includes a recessed groove 10 formed by radiating a laser beam to the surface of the body film 2.

Description

  The present invention relates to a cylindrical sealed package filled with contents and a manufacturing method.

  Conventionally, many packaging bodies which give easy opening property are proposed. For example, in order to peel off the package and take out the contents, a method for tearing the main body film by previously fusing a band-shaped open film to the main body film constituting the package and pulling the open film ( For example, refer to Patent Document 1), and a method of tearing a main body film from a plurality of cuts in an outer portion of a palm seal portion that is heat-sealed by overlapping both end portions in the width direction of the main body film. (For example, see Patent Document 2).

JP-A-5-246458 JP 2002-219777 A

  However, in the case of the method using the above-mentioned opening film, since the opening film is welded before the bag-making process for forming the main body film into a cylindrical shape, the bag-making process or the contents of the contents at the time of the welding process or the subsequent In the filling process, the heat sterilization process, and the like, there is a possibility that pinholes are generated in the package or the bag is broken from the welded portion. In addition, an unsealing film must be prepared separately, and an apparatus for welding the unsealing film to the main body film is required, which has a problem that the manufacturing process is complicated, man-hours are high, and the cost is high.

  In the case of the opening method using the cut, the tear can be torn, but the tearing direction cannot be induced. Therefore, the tear cannot be cut along a desired position, and only the joint seal portion may be broken. Moreover, if the thickness of the main body film is increased in order to prevent bag breakage during distribution or heating, it is no longer easy to open it manually.

  This invention is made | formed in view of said point, The place made into the objective is providing the sealing package body and manufacturing method which can be opened easily with a simple structure.

  The hermetically sealed package of the present invention that solves the above problems includes a cylindrical main body film filled with contents, ligation means for ligating the ends of the main body film, and the contents ligated by the ligation means. A sealed package having an opening part for opening the sealed main body film, wherein the opening part has a concave groove formed by irradiating a laser beam on the surface of the main body film. Yes.

  According to the sealed package of the present invention, the unsealing part has a concave groove formed by irradiating the surface of the main body film with a laser beam, so that, for example, a processing step that receives an external force such as heating or pressing during the manufacturing process. After the process is completed, the surface of the main body film is irradiated with laser light to form a concave groove to ensure the strength of the main body film during the processing process that receives external force and prevent pinholes and bag breakage. Can do. And after completion | finish of the processing process which receives external force, the film intensity | strength in the opening part of a main body film can be weakened, and it can be excellent in easy-opening property.

  Therefore, it is possible to provide a sealed package with a simple structure that can prevent the occurrence of pinholes and broken bags and can be easily opened.

  In addition, according to the sealed package of the present invention, it can be manufactured under the same conditions as a product in which the opening portion is not provided in the sealed package until the laser processing step of irradiating the laser, and it is confirmed whether there is a pinhole or a broken bag. The addition of management items to be performed can be limited to after the laser processing step, and the cost can be reduced by reducing the number of man-hours.

  In the sealed package of the present invention, the main body film has a structure having a surface layer where a portion irradiated with laser light disappears and a laser reflection layer that is disposed below the surface layer and reflects the laser light. Is preferred. And it is preferable that a laser reflection layer has a metal layer containing metal powder. Further, the main body film may be configured to have a barrier layer that prevents oxygen from passing under the laser reflecting layer and an inner surface layer that can be thermally welded under the barrier layer.

  In the sealed package of the present invention, it is preferable that the concave groove extends in the circumferential direction perpendicular to the cylinder axis direction of the cylindrical main body film. Moreover, it is preferable that the ditch | groove is provided in the position spaced apart from the edge part of the main body film by the distance equal to the diameter length of a main body film.

  The hermetic package of the present invention preferably has an unsealed position display film that is adhered on the surface layer and extends along the unsealed portion, and indicates the position of the unsealed portion.

  According to the sealed package of the present invention, the unsealing part has a concave groove formed by irradiating the surface of the main body film with a laser beam, so that, for example, a processing step that receives an external force such as heating or pressing during the manufacturing process. After the process is completed, the surface of the main body film is irradiated with laser light to form a concave groove to ensure the strength of the main body film during the processing process that receives external force and prevent pinholes and bag breakage. Can do. And after completion | finish of the processing process which receives external force, the film intensity | strength in the opening part of a main body film can be weakened, and it can be excellent in easy-opening property. Therefore, it is possible to provide a sealed package with a simple structure that can prevent the occurrence of pinholes and broken bags and can be easily opened.

The figure explaining the structure of the sealed packaging body in this Embodiment. The figure which expands and shows the principal part of FIG. FIG. 3 is a sectional view taken along line AA in FIG. 2. The figure which shows the opening method of the sealed package body in this Embodiment. The figure explaining the other structure of the sealed packaging body in this Embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram for explaining a configuration of a sealed package in the present embodiment, FIG. 2 is an enlarged view showing a main part of FIG. 1, and FIG. 3 is a sectional view taken along line AA in FIG. .

  The sealed package 1 is used for a sausage-like food that is a food packaged in a cylindrical shape such as sausage, ham, and cheese kamaboko. The sealed package 1 includes a cylindrical main body film 2 filled with the contents of a sausage-like food, a clip 3 that is a ligating means for ligating the ends of the main body film 2, and the contents ligated by the clip 3. An unsealing part 5 for unsealing the sealed main body film 2 is provided.

  The main body film 2 is formed into a cylindrical shape by bending a band-shaped film having a certain thickness in the width direction and welding a pair of long sides extending in the longitudinal direction and facing each other so as to overlap each other. The palm seal part 4 is formed in the part. The clip 3 is configured by, for example, a metal wire clip, ligates the end portions of the main body film 2, and seals the contents between the both end portions.

  The unsealing portion 5 is obtained by processing the main body film 2 of the sealed package 1 so that it can be easily opened by hand, and has a concave groove 10 formed by irradiating the surface of the main body film 2 with laser light. is doing. The concave groove 10 is formed so as to extend in the circumferential direction perpendicular to the cylinder axis direction of the cylindrical main body film 2.

  The concave groove 10 is provided at a position separated from the one end in the cylinder axis direction by a distance D2 substantially equal to the diameter length D1 of the main body film 2 (D1≈D2). The groove 10 is shown as an example in the case where it is provided in a dotted line shape, but it is sufficient if it has a strength that can be easily cleaved by hand, and is a linear shape that extends continuously. Also good.

  As shown in FIG. 3, the main body film 2 is desirably a film-like laminate in which a surface layer 11, a laser reflection layer 12, a barrier layer 13, and an inner surface layer 14 are laminated in order. For example, the cross-sectional structure is composed of three layers of polypropylene (PP), nylon, and polypropylene (PP), and preferably has a thickness of 15 μm or more.

  In the present embodiment, the surface layer 11 is made of a material that disappears when irradiated with laser light, such as a polypropylene film (PP) or a nylon film.

  The laser reflection layer 12 is disposed below the surface layer 11 and has a configuration for reflecting laser light. The laser reflecting layer 12 is, for example, a metal formed by applying an intermediate support layer made of a normal biaxially stretched nylon film and a metallic ink containing metal powder of aluminum foil on the intermediate support layer. Consists of layers.

  The barrier layer 13 has a configuration that blocks oxygen permeation, and is formed of, for example, an aluminum foil having a thickness of 5 μm to 9 μm. The inner surface layer 14 is made of a material such as a polypropylene film (PP) that can withstand a heat sterilization process (not deformed or weakened) and can be melted by heat and fused to each other.

  When manufacturing the hermetic package 1, a pair of long sides facing each other is folded in two in the width direction with the inner surface layer 14 of the main body film 2 as the inner side while moving the long band-shaped main body film 2 in the longitudinal direction. Then, the inner surface layers 14 are overlapped with each other and thermally welded to form the main body film 2 in a cylindrical shape.

  Then, the clip 3 is attached and ligated to one end located on the front end side in the moving direction of the main body film 2, and contents such as sausage meat are filled into the main body film 2 from the other end side, and a predetermined amount is filled. By the way, the clip 3 is attached and ligated to the other end, and the contents are sealed in the main body film 2. And the main body film 2 is cut | disconnected in the outer side position rather than the clip 3 of the other end part, it is set as the single-piece sealed package 1, and it transfers to a heat sterilization process.

  Then, after the processing step that receives external force such as heating and pressurization during the manufacturing process, such as a heat sterilization step, is completed, a laser processing step of irradiating the main body film 2 with laser light to form the concave groove 10 is performed. Is called.

  The concave groove 10 is formed by the disappearance of the portion of the surface layer 11 that has been irradiated with the laser beam. The main body film 2 is half-cut with a laser beam by the thickness of the surface layer 11. The laser beam is reflected by the laser reflecting layer 12 and prevents the groove depth of the concave groove 10 from becoming larger, prevents formation of a through hole in the main body film 2, and has a predetermined groove depth. The concave groove 10 is formed.

FIG. 4 is a diagram illustrating a method for opening a sealed package in the present embodiment.
As shown in FIG. 4A, the sealed package 1 is opened when the clip 3 provided at one end of the sealed package 1 is urged toward the joint seal portion 4 from the sealed state. As shown in FIG. 4 (b), the pulling force acting on the concave groove 10 of the portion 5 in the direction away from each other in the groove width direction of the concave groove 10 acts. The opening 21 is formed by opening.

  And the content B which is a sausage-like food is exposed from the opening part 21. FIG. Then, by further pushing and moving the clip 3, as shown in FIG. 4C, the end portion of the content B can be protruded from the opening portion 21.

  According to the above-described sealed package 1, the unsealing part 5 has the concave groove 10 formed by irradiating the surface of the main body film 2 with laser light, and thus, for example, external force such as heating or pressurization during the manufacturing process is applied. After the receiving processing step is completed, the surface of the main body film 2 is irradiated with laser light to form the concave grooves 10, thereby ensuring the strength of the main body film 2 during the processing step receiving external force and generating pinholes. And can prevent bag breakage. And after completion | finish of the process which receives external force, the film strength in the opening part 5 of the main body film 2 can be made weak, and it can be excellent in easy-opening property. Therefore, it is possible to provide a sealed package 1 having a simple configuration that can prevent the occurrence of pinholes and broken bags and can be easily opened.

  In addition, until the laser processing step of irradiating with laser, it can be manufactured under the same conditions as a product in which the opening portion 10 is not provided in the sealed package 1, and a management item for confirming the presence or absence of pinholes or broken bags is added to the laser. It can be limited to the processing steps and later, and the cost can be reduced by reducing man-hours.

  FIG. 5 is a diagram showing a state in which an opening position display film indicating the position of the opening portion is provided on the sealed package. The opening position display film 6 is provided on the main body film 2 so as to extend along the opening portion 5. The unsealing position display film 6 is composed of a film having a color different from that of the main body film 2, or an arrow indicating the unsealing position is printed as shown in FIG. Therefore, the position of the opening part 5 can be pointed more clearly to the user who handles the sausage-like food using the sealed package 1 of the present invention, and the opening operation by the user can be further facilitated.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the configuration in which the opening part 5 is provided only at one end in the cylinder axis direction of the sealed package 1 has been described, but the opening part 5 may be provided at both ends in the cylinder axis direction.

1 Sealed packaging 2 Body film 3 Clip (ligating means)
4 Sealing part 5 Unsealing part 10 Groove 11 Surface layer 12 Intermediate support layer 13 Barrier layer 14 Inner surface layer

Claims (8)

Cylindrical main body film filled with contents, ligation means for ligating end portions of the main body film, and opening portion for unsealing the main body film ligated by the ligation means and sealed with the contents A sealed package having
The sealed packaging body, wherein the unsealed portion has a concave groove formed by irradiating the surface of the main body film with a laser beam.   The said main body film has the surface layer from which the location irradiated with the said laser beam lose | disappears, and the laser reflective layer which is arrange | positioned under this surface layer and reflects the said laser beam, It is characterized by the above-mentioned. The sealed package according to 1.   The hermetic package according to claim 2, wherein the laser reflection layer has a metal layer containing metal powder.   The said main body film has a barrier layer which prevents permeation | transmission of oxygen under the said laser reflective layer, and an inner surface layer which can be heat-welded under a barrier layer, The Claim 2 or 3 characterized by the above-mentioned. Sealed package.   The sealed package according to any one of claims 1 to 4, wherein the concave groove extends in a circumferential direction orthogonal to a cylinder axis direction of the cylindrical main body film.   The sealed package according to claim 5, wherein the concave groove is provided at a position separated from an end of the main body film by a distance equal to a diameter length of the main body film.   It has adhered to the said surface layer, it extends along the said opening part, and has an opening position display film which shows the position of the said opening part, It is any one of Claims 1-6 characterized by the above-mentioned. The sealed package according to the description. Cylindrical main body film filled with contents, ligation means for ligating end portions of the main body film, and opening portion for unsealing the main body film ligated by the ligation means and sealed with the contents A method for producing a sealed package having the following:
Ligating one end of the cylindrical main body film;
Filling the body film with contents from the other end of the body film;
Ligating the other end of the body film filled with the contents;
Irradiating the surface of the main body film with laser light to form a concave groove;
A method for producing a hermetic package, comprising:

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