JP5744613B2 - Packaging product manufacturing method - Google Patents

Description

  The present invention relates to a method for manufacturing a packaged product. More specifically, the present invention relates to a manufacturing method of a packaged product packaged with a shrink film, which includes a step of packaging an article with a shrink film and a processing step of reducing a protrusion formed by thermal shrinkage of the shrink film.

  2. Description of the Related Art Conventionally, various products have been packaged with shrink films for the purpose of protecting and sealing the product, as well as ensuring that the product is unopened. This shrink film is a film having a property of shrinking when heat is applied, and can be brought into close contact with the shape of the article by covering the article and then shrinking the shrink film by heating.

  However, in the packaging using the shrink film, there may be a case where the end of the shrink film can be formed as a protruding portion without being able to adhere to the article depending on the shape of the article. This protrusion is a shrinkage of the film, is harder than before the shrinkage, and in some cases has sharpness, which causes problems such as a finger hurt when handling the packaged product.

  In order to solve such a problem, a method for treating the protrusion has been reported. For example, Patent Document 1 discloses a method of processing a protruding portion with a roller that presses a product from the side. Further, Patent Document 2 discloses a method of treating a protruding portion with a urethane-like plate-like pressing member that presses a product from the side.

Japanese Patent No. 4354899 Japanese Utility Model Publication No. 5-61008

  Depending on the shape or the like of the article to be packaged, the protruding portion does not necessarily occur on the side surface portion, but may also occur on the top surface portion. However, Patent Document 1 and Patent Document 2 only describe a method of processing the protruding portion by pressing the product from the side, and in this method, the protruding portion that can be formed from the top surface portion or the top surface portion to the side surface of the article is There is a problem that it cannot be processed.

  This invention is made in view of the said problem, and provides the manufacturing method of the packaging product which can process not only the side part of the article | item packaged with the shrink film but the protrusion part made in the top | upper surface part. Objective.

  The method for producing a packaged product according to the present invention is a method for producing a packaged product including a packaging step (A) for packaging an article, and a processing step (B) for treating the article packaged in the packaging step (A). In the packaging step (A), (A1) the article is processed by processing the sheet-like shrink film into a substantially cylindrical shape containing the article, or by inserting the article into the substantially cylindrical shrink film. An accommodating step of accommodating the substantially cylindrical shrink film, (A2) a cutting step of cutting the substantially cylindrical shrink film so as to form protrusions in the left-right direction or the vertical direction of the article, and (A3) heating the shrink film. A shrinking step of shrinking and intimately contacting the article, wherein the processing step (B) comprises two soft products installed so as to oppose the article packaged in the packaging step (A). It is advanced between the body, that the flexible foam presses while deformed along the shape of the article, presses the protruded portion of the shrink film is a production method characterized by small.

  The soft foam is preferably cylindrical.

  The soft foam is preferably spherical.

  The soft foam is preferably composed of a plurality of foam members.

  According to the method for manufacturing a packaged product of the present invention, an article packaged with a shrink film enters between two soft foams, and the soft foam is pressed while being deformed along the shape of the article. It is possible to provide a method for manufacturing a packaged product including a processing step capable of reducing not only a side surface portion of an article packaged with a film but also a protruding portion formed on a top surface portion.

It is the schematic which shows a part of packaging process and processing process of this invention. It is the schematic which shows the shape of the shrink film after a cutting process. It is the schematic which shows an example of the articles | goods of this invention, and a part of two soft foams. It is the schematic which shows an example of the articles | goods of this invention. It is the schematic which shows an example of the articles | goods of this invention. It is the schematic which shows an example of the articles | goods of this invention. It is the schematic which shows an example of arrangement | positioning of the soft foam of this invention. It is the schematic which shows an example of the soft foam of this invention. It is the schematic which shows an example of the soft foam of this invention.

  Hereinafter, the manufacturing method of the packaged product of the present invention will be described in detail with reference to the accompanying drawings as appropriate. FIG. 1 is a conceptual diagram showing a part of a packaging process and a processing process of the present invention. An article a accommodated in a substantially cylindrical shrink film 20 after an accommodating process and a cutting process described later is shrunk by a conveyor 30. A manufacturing method in the case where the shrink film 20 is transported to the shrinking process in which the shrink film 20 is shrunk in the tunnel 40 and is transported to the processing process pressed by two soft foams 50 will be described. In FIG. 1, as an example of a method for manufacturing a packaged product according to the present invention, an aerosol container including a cap part 11 and a pressure-resistant container part 12 is used as an article 10, and the conveyor 30 is placed so that the cap part 11 is on the traveling direction X side. The article 10 is not particularly limited as long as it is an article that can be wrapped with a shrink film, such as a cluster pack containing a pump product or a product other than an aerosol container, Moreover, as a conveyance means, it can also convey by the conventional conveyance means other than the conveyor 30. FIG.

  The method for producing a packaged product of the present invention includes a packaging step (A) for packaging an article and a processing step (B) for treating the packaged article by the packaging step (A).

  The packaging step (A) includes an accommodating step (A1) for storing an article in a substantially cylindrical shrink film, a cutting step (A2) for cutting the shrink film, and a shrinking step (A3) for thermally shrinking the shrink film. .

Accommodation process (A1)
This is a step of storing an article to be packaged in a substantially cylindrical shrink film, and when the shrink film to be used is a sheet, a step of processing the sheet-like shrink film into a substantially cylindrical shape containing the article And when the shrink film to be used is substantially cylindrical, it is set as the process of inserting articles | goods in this substantially cylindrical shrink film. Whether to use a sheet-like shrink film or a substantially cylindrical shrink film can be appropriately selected according to the size of the article, the material of the shrink film to be used, and the like.

  Examples of the material of the shrink film include polyolefins such as polypropylene and polyethylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, and the like, and can be appropriately selected according to the article to be packaged and the purpose of packaging.

Cutting process (A2)
This is a step of cutting a substantially cylindrical shrink film that houses the article obtained in the above-described housing step (A1).

  Since the processing step (B) described later is a step of pressing and shrinking the protruding portion of the shrink film caused by shrinkage of the shrink film with two soft foams, the protruding portion is located at a place that can be pressed with these soft foams. Need to be able to. That is, when the two soft foams in the processing step (B) are arranged in the left-right direction of the article, the two flexible foams are arranged in the left-right direction of the article, and when arranged in the up-down direction of the article, Make a protrusion. Here, in the case where the left and right direction of the article is a manufacturing method using a conveyor, the direction parallel to the surface on which the article is placed and the direction perpendicular to the traveling direction X is the vertical direction. In the case of a manufacturing method using a conveyor, it means a direction perpendicular to the surface on which the article of the conveyor is placed.

  The substantially cylindrical shrink film is pressed in the cutting direction by a cutting means (not shown) for cutting the shrink film, and has a crease L at both ends of the cut surface as shown in FIG. 2 by thermally welding the cut surface. When the shrink film 20 is heat-shrinked with the crease L in the shape, the protruding portion is likely to be generated at the position of the crease L. That is, the position where the protrusion M of the shrink film occurs tends to occur at both ends of the cut surface. Therefore, as a method of cutting the substantially cylindrical shrink film 20, the protrusion M is cut in the vertical direction when the protrusion M can be made in the left and right direction of the article, and is cut in the horizontal direction when it can be made in the vertical direction. Or a method of rotating the article by 90 ° after cutting the shrink film in the left-right direction.

  Moreover, the size of the shrink film after cutting can be set to a predetermined size, and the predetermined size can be appropriately selected according to the size of the article to be packaged, the material of the shrink film, and the like. it can.

Shrinkage process (A3)
For example, as shown in FIG. 1, the article a accommodated in the substantially cylindrical shrink film after being cut is transported to the shrink tunnel 40 by the conveyor 30. The shrink film 20 is heated by a known heating means in the shrink tunnel 40 so that the shrink film 20 is heat-shrinked and closely adhered to the article 10 to obtain the article b packaged with the shrink film. In addition, it is preferable that heating temperature is 100-200 degreeC.

  Since the article b wrapped with the obtained shrink film has protrusions M on the side surface and / or the top surface of the article, the processing step (B) for pressing and reducing these protrusions M, It is assumed that the packaged product c has a small protrusion M.

  For example, as shown in FIG. 1, the top surface portion and the side surface portion in the present invention are a packaging process in which an aerosol container including a cap portion 11 and a pressure-resistant container portion 12 is placed so that the cap portion 11 is on the traveling direction X side. The top and side portions of the aerosol container when A) is performed. In addition, as shown in FIG. 3, when the tip of the cap portion 11 of the aerosol container has a dome-like rounded shape and there is no portion forming a surface at the tip portion, the dome-like rounded portion is The top surface.

  The protrusion M generated by the shrinkage of the shrink film tends to be different from the position generated by the shape of the article to be packaged. For example, when the diameter of the top surface of the cap is smaller than the diameter of the pressure resistant container as in the aerosol container 10A shown in FIG. 3 or the aerosol container 10B shown in FIG. 4, the protrusion M tends to occur only on the side surface. Further, when the diameter of the cap top surface portion is the same as or close to the diameter of the pressure-resistant container as in the aerosol container 10C shown in FIG. 5, the projecting portion M tends to occur on the side surface portion and the top surface portion. Furthermore, in the case of an article having a special shape such as a left-right asymmetric shape, such as an article that does not have the cap portion shown in FIGS. 6A and 6B and directly wraps the injection member 13 with a shrink film. In some cases, the protrusions M are formed at positions that are asymmetrical to the left and right or at places where processing is difficult with conventional processing methods.

Processing step (B)
As shown in FIG. 1, the article b packaged with the shrink film obtained by the packaging process (A) enters between two soft foams 50 (columnar shape) installed so as to face each other, and the soft foam is formed. By pressing the article b while the body 50Y and the soft foam 50Z are deformed along the shape of the article b, the protrusion M of the shrink film is pressed and becomes smaller.

  As the arrangement of the flexible foam, it can be arranged in the left-right direction of the article as shown in FIG. 1 or in the up-down direction of the article as shown in FIG. The arrangement in the left-right direction is excellent in that the position of the article is stable and easy to process. In the case of arranging in the vertical direction, the processing apparatus is three-dimensional, so that the installation area is small and it is excellent in that it is easy to install.

  The soft foam may consist of one soft foam or a plurality of soft foam members.

  Examples of the shape of the soft foam made of one soft foam include a columnar shape as shown in FIG. 1 and FIG. 7 and a spherical shape, but the protruding portion is processed from the viewpoint that a pressing force is easily applied to the protruding portion. The part is preferably curved.

  As the soft foam made of a plurality of soft foam members, as shown in FIG. 8, a soft foam made of a plurality of soft foam members 73 mounted along the periphery of a circular base 72 fixed to a rotating shaft 71, and can do. Also, as shown in FIG. 9, a plurality of soft foam members mounted on an endless belt (85Y or 85Z) supported by two shafts (81 and 82, 83 and 84) rotating in the same direction (X or Y) A soft foam of 86 can be obtained.

  The soft foam is not particularly limited as long as it can press the article while deforming along the shape of the article when the article enters and passes through, but for example, polyurethane, melamine resin, polyethylene, Examples include materials made from synthetic resins such as polyolefin such as polypropylene, and rubber, and materials that are deformed along the shape of the article without damaging the article. A foam is preferred.

  Since the two soft foams can efficiently perform the processing step (B), the two soft foams are reversed in order to convey the article that has entered between the two soft foams in the traveling direction X. It can be configured to self-rotate by the power of a motor or the like in the direction, or either one can be self-rotated by the power of a motor or the like. That is, the soft foam 50Y shown in FIG. 1 can be configured to rotate about the respective shafts 51 in the rotational direction Y, and the soft foam 50Z can be configured to rotate about the respective shafts 51. Further, the rotation speed of the self-rotation can be appropriately selected, but when a conveyor is used, the difference between the rotation speed and the moving speed of the conveyor is preferably within 10%.

  The heights of the two soft foams can be appropriately selected according to the size of the article to be packaged, particularly the height, but are preferably 1.5 times or more the height of the article. The height of the article refers to the length of the soft foam in the axial direction when entering between the two soft foams.

  The diameter in the case where the two soft foams are made of one soft foam can be appropriately selected according to the size of the article to be packaged, particularly the width, but it is at least twice the width of the article. It is preferable. In addition, the width | variety of articles | goods means the length of the direction which connects the axis | shaft of two soft foams when approaching two soft foams.

  When the two soft foams are composed of a plurality of soft foam members, the width of one soft foam member can be appropriately selected according to the size of the article to be packaged, particularly the width. It is preferable to set it to 1 time or more. The width of the soft foam member refers to the length of the soft foam member in the width direction of the article when the article enters two soft foams.

  The distance between the two soft foams can be appropriately selected according to the size of the article to be packaged, particularly the width, but it should be 0.9 times or less the width of the top surface portion of the article. preferable. If it is larger than 0.9 times, the top surface portion of the article cannot be pressed, and the protruding portion of the top surface portion tends not to be reduced. Further, the distance between the two soft foams may be 0, that is, the two soft foams may be in contact with each other, but when the article is difficult to enter, it can be improved by making a certain interval.

  Shrink so that the temperature of the shrink film when the protrusion M of the article b wrapped with the shrink film is pressed by two soft foams is preferably 80 to 150 ° C, more preferably 90 to 120 ° C. It is preferable to adjust the pressure temperature at which the film is thermally shrunk and the time from the shrinking step (A3) to the treatment step (B). When the temperature of the shrink film is lower than 80 ° C., the protrusions are hard and tend not to be compressed even when pressed, and when higher than 150 ° C., the shrink film tends to be easily broken. Note that the time from the contraction step (A3) to the treatment step (B) can be, for example, within 3 seconds. If it is longer than 3 seconds, the temperature of the shrink film when pressed by two soft foams tends to be lower than 80 ° C.

  After the packaging step (A), the two soft foams follow the shape of the article by entering between the two soft foams and pressing the side part and the top part of the article wrapped with the shrink film. Since the projecting portion of the shrink film is pressed while being deformed, a packaged product in which the projecting portion is processed small can be obtained regardless of the location where the projecting portion is formed or the shape of the article. That is, it is possible to reduce not only the side surface portion but also the protrusion portion generated on the top surface portion, and it is possible to reduce the formed protrusion portion even if the shape of the article is a special shape such as left-right asymmetry. Thereby, the package product which was excellent in safety | security can be manufactured.

10 Articles for packaging (aerosol containers)
10A, 10B, 10C, 10D Aerosol container 11 Cap part 12 Pressure-resistant container part 13 Injection member 20 Shrink film 30 Conveyor 40 Shrink tunnel 50, 50Y, 50Z Soft foam 51 Axis 60, 60Y, 60Z Soft foam 61 Axis 71 Axis 72 Circular base 73 Soft foam member 81, 82, 83, 84 Shaft 85Y, 85Z Endless belt 86 Soft foam member a Article housed in shrink film b Article packaged with shrink film c Package product with small protrusions processed L Crease M Protrusion X Traveling direction Y, Z Rotation direction

Claims (4)

A packaging product manufacturing method including a packaging step (A) for packaging an article, and a processing step (B) for treating the article packaged in the packaging step (A),
The packaging step (A)
(A1) The article is accommodated in the substantially cylindrical shrink film by processing the sheet-like shrink film into a substantially cylindrical shape containing the article, or by inserting the article into the substantially cylindrical shrink film. Containment process,
(A2) including a cutting step of cutting the substantially cylindrical shrink film so that a protruding portion can be formed in the left-right direction or the vertical direction of the article, and (A3) a shrinking step of thermally shrinking the shrink film and closely contacting the article,
The processing step (B)
By allowing the article packaged by the packaging step (A) to enter between two soft foams installed so as to face each other, and pressing the soft foam while deforming along the shape of the article, It is a process of pressing and shrinking the protruding part of the shrink film,
The article has a side surface portion and a dome-shaped top surface portion, and is placed so that the top surface portion is on the entry direction side when entering between the soft foams,
The distance between the two soft foams is not more than 0.9 times the width of the top surface portion,
In the processing step (B), the flexible foam presses at least the top surface portion and the side surface portion. The manufacturing method according to claim 1, wherein the soft foam is cylindrical. The production method according to claim 1, wherein the soft foam is spherical. The manufacturing method of Claim 1 with which the said soft foam consists of a some soft foam member.

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