JP6268423B2 - Package and method for producing the package - Google Patents

Description

The present invention relates to a package in which an article to be packaged is packaged by a cylindrical film bonded to a base material, and a method for manufacturing the package .

  A package in which an article to be packaged is packaged appropriately protects the article to be packaged and emphasizes the appearance at a store or the like. FIG. 19 shows a manufacturing process of an example of a conventional package (see, for example, Patent Document 1). The figure shows a packaging material comprising a base material 91, a cylindrical film 92 that opens in the vertical direction in the figure, and a joint portion 94 that joins them. Moreover, the to-be-packaged object 93 packaged with this packaging material is shown. For the base material 91, for example, a base paper made of cardboard is used, and the tubular film 92 is a heat-shrinkable film and is generally transparent. In the figure, the cylindrical film 92 is in a state before heating, and is folded flat, for example. The joining portion 94 is made of an adhesive or the like, and joins the front surface of the base material 91 and the tubular film. The joining portion 94 has a strip shape extending in the vertical direction in the drawing. The to-be-packaged item 93 has a bulge-shaped portion positioned below and a slightly narrower columnar portion positioned above.

  In manufacturing the package, the tubular film 92 before heating is expanded. Next, an article 93 to be packaged is inserted into the internal space of the tubular film 92. And the cylindrical film 92 is closely_contact | adhered to the to-be-packaged item 93 by carrying out the heat shrink of the cylindrical film 92. FIG. The package X shown in FIGS. 20 and 21 is obtained through the above steps. According to the package X, the packaged item 93 can be displayed on the front surface of the base material 91 in a state where it can be easily seen from the purchaser.

  However, in the package X, the joint portion 94 is provided across the bulging shape portion and the cylindrical portion of the article 3 to be packaged. For this reason, as shown in FIG. 21, the base material 91 is bent along the article to be packaged 93. In such a thing, there exists a problem that the appearance of the whole package X will be inferior. In addition, in the base material 91, a product name, an advertisement logo, or the like of the packaged object 93 is often printed on a portion that protrudes from the packaged object 93. When the base material 91 bends, the printed contents are distorted, and there is a concern that it is difficult to read or the appearance is impaired.

JP 2012-121590 A

  The present invention has been conceived under the circumstances described above, and an object of the present invention is to provide a package capable of enhancing the appearance while appropriately packaging an object to be packaged.

  The package provided by the present invention is a package including a base, a cylindrical film joined to the base, and an article to be packaged that is at least partially covered by the cylindrical film. The cylindrical film and the base material are joined by at least two joints spaced apart from each other, and are defined by a portion of the base material located between the joints and the tubular film. It is characterized in that a void portion is formed.

  In a preferred embodiment of the present invention, the gap is open on both sides in a direction intersecting the direction in which the joints are arranged.

  In preferable embodiment of this invention, the said to-be packaged object has a constriction part or a recessed part in the position corresponding to the said space | gap part.

  In a preferred embodiment of the present invention, the tubular film is a uniaxially stretched heat-shrinkable film in which the heat shrinkage along the stretching direction is larger than the heat shrinkage along the other direction, The extending direction intersects the direction in which the joints are arranged.

  In a preferred embodiment of the present invention, the base material has a bent portion, and the two joint portions are respectively located on portions of the base material that are located on opposite sides of the bent portion. The gap is defined by at least a part of the bent portion.

  According to this invention, the said base material is joined to the said cylindrical film by the two said junction parts on both sides of the said space | gap part. For this reason, when the said tubular film is heat-shrinked, the said tubular film can be contact | adhered neatly along the external shape of the said to-be-packaged product, without the heat shrink being inhibited by the said junction part. That is, the base material can be separated from the portion corresponding to the gap portion of the packaged object without being along. Thereby, the said base material will not be in the state which bends unjustly along the said to-be packaged object. Therefore, the appearance of the entire package can be kept good. In addition, when a product name or an advertising logo of the package is printed on a portion of the base material that protrudes from the package, the printed content is distorted and difficult to read, or the appearance is impaired. Can be prevented.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows the package based on 1st embodiment of this invention. It is sectional drawing which follows the II-II line | wire of FIG. It is a front view which shows the packaging material used for manufacture of the package of FIG. It is a perspective view which shows the manufacturing process of the package of FIG. It is a front view which shows the modification of the package shown in FIG. It is a front view which shows the other modification of the package shown in FIG. It is a front view which shows the other modification of the package shown in FIG. It is a front view which shows the other modification of the package shown in FIG. It is a front view which shows the other modification of the package shown in FIG. It is sectional drawing which shows the other modification of the package shown in FIG. It is sectional drawing which shows the other modification of the package shown in FIG. It is sectional drawing which shows the other modification of the package shown in FIG. It is a perspective view which shows the package based on 2nd embodiment of this invention. It is sectional drawing which follows the XIV-XIV line | wire of FIG. It is a front view which shows the packaging material used for manufacture of the package of FIG. It is a perspective view which shows the manufacturing process of the package of FIG. It is a perspective view which shows the package based on 3rd embodiment of this invention. It is sectional drawing which follows the XVIII-XVIII line of FIG. It is a front view which shows the manufacturing process of an example of the conventional package. It is a front view which shows an example of the conventional package. It is a side view which shows the package of FIG.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 and 2 show a package according to the first embodiment of the present invention. The package A1 of the present embodiment includes a base material 1, a tubular film 2, an article 3 to be packaged, a joint portion 4, and a gap portion 5. FIG. 1 is a perspective view of the package A1 as viewed from the obliquely upper side on the front side. FIG. 2 is a cross-sectional view in the yz plane along the line II-II in FIG. Moreover, the thickness direction of the base material 1 is defined as the z direction, and the directions perpendicular to the z direction are defined as the x direction and the y direction. For example, the y direction corresponds to the up and down direction when the package A1 is displayed, and the x direction corresponds to the horizontal direction.

  The base material 1 holds the article 3 to be packaged via the tubular film 2. As the base material 1, so-called coated paper having a resin layer provided on its surface or a synthetic resin sheet is used in addition to a common base paper made of so-called non-coated paper such as thick paper, plain paper, and synthetic paper. sell. As these, various sheet materials such as a single layer sheet and a laminated sheet in which two or more of these sheets are laminated and bonded can be used. In the present embodiment, a case where a substantially rectangular mount made of thick paper is used as the base material 1 will be described as an example. In the present embodiment, the base material 1 has a flat plate shape as a whole, and does not have a bent portion or a folded portion. 1 and 2, the article 3 to be packaged is in the front in the z direction, and the base material 1 is arranged in the rear in the z direction.

  The tubular film 2 is a shrinkable film called a so-called shrink film, and is a member that wraps the package 3 in a close contact state by, for example, thermal shrinkage. In the present embodiment, the tubular film 2 is a tubular body that is open at both upper and lower ends in the y direction and into which the article to be packaged 3 can be inserted before heat shrinkage. The tubular film 2 has a height equivalent to that of the article 3 to be packaged, and adheres to substantially the entire article 3 by heat shrinkage. In the present embodiment, the tubular film 2 has a height that is folded into the upper end and the lower end of the article 3 to be packaged. However, the cylindrical film 2 may have a height that exposes the end of the article 3 to be packaged, and the height is not particularly limited as long as the article 3 can be inserted. Moreover, the cylindrical film 2 should just be what has at least one of the upper and lower ends opened, for example.

  Specific examples of the resin film constituting the tubular film 2 include polyolefins such as linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), and polypropylene (PP), polyethylene terephthalate. (PET), polyesters such as polybutylene terephthalate (PBT), polystyrene (PS), polylactic acid (PLA), polyamide, ethylene vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA) ) And a film made of a vinyl resin such as polyvinyl chloride. Moreover, the film containing the resin mixture which mixed 2 or more types of these resin can also be used, and the laminated | multilayer film which laminated | stacked 2 or more types of films can also be used. In particular, as the shrink film that is heat-shrinkable, polyester-based, polyolefin-based, and polystyrene-based films are preferable, and polyester-based films are particularly preferable because they have appropriate shrinkage stress and high transparency. In addition, a uniaxially stretched film that mainly shrinks in the circumferential direction can be preferably used, but a biaxially stretched film that also shrinks in the axial direction may be used. The uniaxially stretched film refers to a film that is substantially uniaxially stretched, and means a film that has greatly different shrinkage rates in the circumferential direction (so-called TD direction) and the axial direction (so-called MD direction). Thus, it does not mean only a film that does not shrink at all in any direction (so-called shrinkage rate is zero). Specifically, for example, a film having a thermal contraction rate of 35 to 80% in the circumferential direction and a thermal contraction rate of -5 to 10% in the axial direction at 90 ° C. for 10 seconds (warm water treatment) can be mentioned.

  Although it does not specifically limit as thickness of the cylindrical film 2, It is preferable that it is 8-100 micrometers, More preferably, it is 10-80 micrometers, Especially preferably, it is 15-60 micrometers. Moreover, as the tubular film 2, a colored resin tubular film or a resin film on which a printing layer for displaying a product name, a design, or the like is formed can be used.

  In the present embodiment, the tubular film 2 is a heat-shrinkable uniaxially stretched film and has two end edges 21. One edge 21 is located on the upper end surface in the y direction of the article 3 to be packaged, and the other edge 21 is located near the lower end in the y direction of the article 3 to be packaged. Moreover, the extending | stretching direction S of the cylindrical film 2 is contained in zx plane in a figure, and is based on the shape of the to-be-packaged object 3 mentioned later, and substantially corresponds to what is called a circumferential direction. When heated, the tubular film 2 has a property that the thermal shrinkage along the stretching direction S is significantly larger than the thermal shrinkage along other directions.

  The tubular film 2 may be formed with a tab (not shown) for easy opening. This knob is provided so as to protrude from the edge 21 positioned upward in the y direction, for example, at a position retracted 90 ° in the circumferential direction from the front in the y direction corresponding to the front of the article 3 to be packaged. Further, a perforation that vertically cuts the tubular film 2 in the y direction from the base of the knob piece may be formed. This perforation is provided in order to smoothly open the tubular film 2. Further, the cylindrical film 2 is generally provided with a center seal portion (not shown) for maintaining a cylindrical shape. The center seal portion is formed by joining both ends of the resin film material using an organic solvent. For example, the center seal portion faces the base material 1 in the tubular film 2 and avoids the joint portion 4 described later. Is provided. Further, when the tubular film 2 is a heat-shrinkable uniaxially stretched film, the center seal portion generally cuts the tubular film 2 along the y direction perpendicular to the stretching direction S. It is formed.

  The packaged item 3 is a product that is protected by the package A1 and is an object to be used by the purchaser. For example, various types of products such as cosmetics and foods can be adopted as the packaged item 3. In the present embodiment, the article to be packaged 3 has a main body portion 31 and a lid portion 32. The main body 31 occupies most of the article 3 to be packaged, and is a part that accommodates the contents, for example. In the present embodiment, the main body 31 has a constricted portion 33 and two bulged portions 35. The constricted portion 33 is a portion having a smaller cross-sectional area than portions adjacent to both sides in the y direction, and is recessed over the entire circumference in the circumferential direction. The bulging portions 35 are provided on both sides in the y direction of the constricted portion 33, and have a large cross-sectional area relative to the constricted portion 33. In addition, a bottom surface for raising the article 3 to be packaged is formed at the lower end in the y direction of the main body 31. The lid portion 32 is positioned above the main body portion 31 in the y direction, and can be attached to and detached from the main body portion 31 by, for example, screwing.

  The two joining parts 4 join the base material 1 and the tubular film 2, and in the present embodiment, these joining parts 4 sandwich the constricted part 33 of the article 3 in the y direction. They are spaced apart. And each junction part 4 has joined the part which covers the bulging part 35 of the to-be-packaged product 3 among the cylindrical films 2, and the base material 1. FIG. Since the two joint portions 4 are arranged in this way, the y direction, which is the direction in which the two joint portions 4 are arranged, and the stretching direction S of the tubular film 2 are in a crossing relationship with each other. In the form, it is a substantially right angle. Moreover, each junction part 4 is made into the long rectangular shape extended long in ay direction. The widths of the two joint portions 4 are the same.

  In addition, the shape of the junction part 4 is not limited to a long rectangular shape, and can be variously set. Moreover, the number of the junction parts 4 will not be specifically limited if it is two or more in consideration of producing the effect which this invention intends. The joint 4 is formed, for example, by applying an adhesive to the base material 1 or sticking a double-sided adhesive tape or the like. Below, the junction part 4 is demonstrated as what is formed by application | coating of an adhesive agent.

  If the adhesive which forms the junction part 4 has strong adhesive strength with the tubular film 2 and can withstand the load of the article 3 to be packaged, it can maintain the adhesive state for a long time in the distribution process and display process. Various adhesives (including adhesives) can be used. Examples of the adhesive include pressure-sensitive adhesives such as elastomer-based adhesives, thermoplastic resin-based adhesives, and hot-melt adhesives, heat-sensitive adhesives, and the like. A hot-melt adhesive that exhibits strong adhesive strength when cooled to room temperature after being bonded together is preferred, and among them, a moisture-reactive hot-melt adhesive is more preferred. The adhesive strength can be adjusted not only by the type of adhesive but also by the adhesive application area and various additives, and can be appropriately adjusted according to the weight of the supported object.

  As clearly shown in FIG. 2, the gap 5 is a space defined by the portion located between the two joints 4 in the base 1 and the tubular film 2. That is, the gap 5 is entirely overlapped with the article 3 to be packaged when viewed in the z direction, which is the thickness direction of the base material 1, and is positioned between the two joints 4. Naturally, the portions defining the gap 5 in the base material 1 and the tubular film 2 are separated from each other.

  In the present embodiment, a part of the gap 5 is defined by the portion of the tubular film 2 that covers the constricted portion 33 of the article 3 to be packaged. In addition, the gap 5 is open on the direction intersecting the y direction, which is the direction in which the two joints 4 are arranged, more specifically on both sides in the x direction. In other words, the object to be packaged 3 is held by the base material 1 via the tubular film 2 and the two joint portions 4 only in the two bulging portions 35 that are spaced apart in the y direction across the gap portion 5. ing.

  Next, manufacture of package A1 is demonstrated below, referring FIG. 3 and FIG.

  FIG. 3 shows an example of a packaging material used for manufacturing the package A1. This packaging material B1 has a base material 1, a tubular film 2 before heating, and two joint portions 4. In addition, in this figure, the cylindrical film 2 exists in the front in the figure, and the base material 1 exists in the back in the figure.

  The base material 1 can employ the various materials described above, and in the present embodiment, is made of rectangular cardboard. The tubular film 2 before heating is a folded tubular shape and is substantially rectangular. In the state where the tubular film 2 is folded, the stretching direction S is substantially along the x direction. The tubular film 2 is open on both sides in the y direction, and the two end edges 21 are arranged on both ends in the y direction. Note that the fact that the tubular film 2 is folded has advantages such as easy handling, but the tubular film 2 does not necessarily have to be folded. The tubular film 2 is joined to the base material 1 by two joining portions 4 that are spaced apart in the y direction.

  In the production of the package A1 using the packaging material B1, as shown in FIG. 4, the tubular film 2 before heating is expanded. Thereby, the cylindrical film 2 becomes the shape opened to both sides of ay direction. At this time, it is preferable that the tubular film 2 has an internal space having a volume capable of smoothly accommodating the article 3 to be packaged. Next, the article 3 to be packaged in which the main body 31 and the lid 32 are joined is inserted into the inner space of the tubular film 2 from above or below in the y direction. At this time, the package 3 may have a configuration in which the main body portion 31 and the lid portion 32 are directly exposed to the outside. Moreover, the position of the to-be-packaged object 3 is set so that the two bulging parts 35 of the to-be-packaged object 3 may overlap with the two joint parts 4 when viewed in the z direction.

  Thereafter, the tubular film 2 is brought into close contact with the article 3 by heat shrinking the tubular film 2 using, for example, a steam tunnel facility or a hot-air tunnel facility set at a predetermined temperature. Due to this heat shrinkage, a space is created between a portion of the base material 1 located between the two joint portions 4 and a portion of the tubular film 2 that covers the constricted portion 33 of the package 3. This space becomes the gap 5. The package A1 is obtained through the above steps.

  Next, the operation of the package A1 will be described.

  According to the present embodiment, the base material 1 is bonded to the tubular film 2 by the two bonding portions 4 with the gap 5 interposed therebetween. For this reason, when the tubular film 2 is heat-shrinked, the tubular film 2 can be adhered closely along the outer shape of the article to be packaged 3 without the heat shrinkage being inhibited by the joint portion 4. That is, the base material 1 can be separated from the portion corresponding to the gap portion 5 of the packaged article 3 without being along. Thereby, the base material 1 is not in an unreasonably bent state along the article 3 to be packaged, and is maintained in a flat state. Therefore, the appearance of the entire package A1 can be kept good. In addition, when a product name or an advertising logo of the package 3 is printed on a portion of the base material 1 that protrudes from the package 3, the printed contents are distorted and are difficult to read, or the appearance is impaired. Can be prevented.

  The gap 5 is open on both sides in the x direction. This is because the article to be packaged 3 (cylindrical film 2) is between two bulging parts 35 joined to the base material 1 by the two joining parts 4 via the cylindrical film 2 in the article to be packaged 3. This means that there is no place where the base material 1 is in contact with the base material 1. As described above, by avoiding a region of the article 3 to be packaged that is completely separated from the base material 1 and arranging the two joint portions 4 so as to sandwich this region, it is possible to suitably prevent the base material 1 from being unduly bent. Can be prevented.

  The constricted portion 33 of the article 3 to be packaged according to this embodiment is a portion where the cross section in the zx plane is minimized. And the extending | stretching direction S of the cylindrical film 2 is substantially perpendicular | vertical with respect to the y direction which is the direction where the two junction parts 4 space apart, ie, is substantially contained in the zx plane. Since the tubular film 2 has a property of being largely thermally contracted along the stretching direction S, the tubular film 2 can be satisfactorily adhered to the constricted portion 33. Thereby, it can avoid that the cylindrical film 2 will be in the state which floated from the constriction part 33 unintentionally, and the space | gap part 5 can be formed reliably.

  5 to 18 show other embodiments or modifications of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

  5-9 is a figure for demonstrating the modification of package A1 about arrangement | positioning of the two junction parts 4 with respect to the base material 1, and the to-be-packaged object 3. FIG. However, for convenience of understanding, these modified examples are shown in the state of the packaging material B1 for manufacturing the package A1, and a suitable joint 4 can be provided according to the shape of the article 3 to be packaged. Is shown. In addition, all are the front views seen from the z direction.

  In the modification shown in FIG. 5, the posture of the article 3 to be packaged with respect to the base material 1, that is, the posture of the tubular film 2 and the point that the two joint portions 4 are spaced apart in the y direction are the same as the above-described configuration. Each joint 4 has a shape extending in the y direction longer than the above-described configuration. For example, the sum of the lengths in the y direction of the two joint portions 4 may be larger than half of the length in the y direction of the tubular film 2. Such a modification is suitable, for example, when the bulging part 35 of the article 3 has a shape that extends long in the y direction. In the modification shown in FIG. 6, each joint 4 has a long rectangular shape that extends long in the x direction. Such a modification is suitable, for example, when the bulging portion 35 has a flat shape along the x direction. Further, in the modification shown in FIG. 7, the length of each joint 4 in the x direction is longer than that in the modification shown in FIG. For example, the length of each joint 4 in the x direction may be larger than half the length of the tubular film 2 in the x direction. Such a modification is suitable, for example, when the bulging part 35 extends further along the x direction.

  In the modification shown in FIGS. 8 and 9, the posture of the article 3 to be packaged, that is, the tubular film 2 with respect to the base material 1 is different from the configuration described above, and is inclined with respect to the x direction and the y direction. In the modification shown in FIG. 8, corresponding to the posture of the article 3 to be packaged, that is, the tubular film 2, the two joining portions 4 are in the direction in which the two edges 2 of the tubular film 2 are separated from each other, that is, in the stretching direction. It extends long in a direction perpendicular to S. On the other hand, in the modification shown in FIG. 9, each joint 4 has a long rectangular shape extending long along the y direction. The joining portion 4 shown in each of FIGS. 8 and 9 may be appropriately selected according to the shape of the article 3 to be packaged.

  Also with these modified examples, the appearance of the entire package A1 can be kept good. Moreover, in any package A1, the longitudinal directions of the two joint portions 4 coincide with each other. For example, when the adhesive is applied to the base material 1, such two joint portions 4 are prepared with nozzles that cannot apply the adhesive to a certain width, and are bonded in the same direction from each nozzle. It can form efficiently by apply | coating an agent.

  FIGS. 10-12 has shown the modification of package A1 from which the shape of the to-be-packaged goods 3 differs, and is sectional drawing in yz plane which follows the line corresponded to the II-II line | wire of FIG. In the modification shown in FIG. 10, two constricted portions 33 and three bulged portions 35 are formed in the article 3 to be packaged. The two constricted portions 33 are provided side by side in the y direction. The three bulging portions 35 are provided side by side in the y direction across the two constricted portions 33. Of the three bulging portions 35, the uppermost one and the lowermost one are held on the base material 1 via the tubular film 2 and the two joining portions 4. The cylindrical film 2 covering the bulging portion 35 located in the center may be in contact with the base material 1 although it is not necessary, and shows the contact state in FIG. In this case, two gap portions 5 are formed at positions corresponding to the two constricted portions 33. As can be understood from this modification, the present invention may have a configuration in which a plurality of gaps 5 are provided between two joints 4.

  In the modification shown in FIG. 11, three joint portions 4 corresponding to the three bulging portions 35 are provided. Each joining part 4 joins the part which covers each bulging part 35 among the cylindrical films 2 to the base material 1. In this modification, one gap portion is formed between two joint portions 4 adjacent in the vertical direction in the y direction. As can be understood from this modification, the gap 5 can be formed as long as the structure includes two or more joints 4, and the number of joints 4 is not particularly limited.

  In the modification shown in FIG. 12, a recess 34 is formed in the package 3 in place of the constricted portion 33. The recessed part 34 is a site | part made into the shape where the part facing the base material 1 among the main-body parts 31 was dented. On the other hand, a portion of the main body 31 on the side opposite to the base material 1 has a shape that swells to the left in the drawing, and does not have a concave shape. Moreover, the cross-sectional area in the zx plane of the part to be packaged 3 including the recess 34 does not need to be minimal, and the cross-sectional area may be larger than the adjacent part. Even if it is package A1 which packages such a to-be-packaged object 3, the space | gap part 5 prescribed | regulated by the part which covers the recessed part 34 among the cylindrical films 2, and the base material 1 is formed. Note that the recess 34 may have a shape that opens only on one side in the x direction, for example. If the tubular film 2 is configured to be along the concave portion 34 by heat shrinkage, the base material 1 can be packaged 3 by providing the two joint portions 4 and the gap portion 5 positioned between them. Can be prevented from being bent unduly along.

  13 and 14 show a package according to the second embodiment of the present invention. FIG. 13 is a perspective view of the package A2 according to the present embodiment as viewed from obliquely upward on the front side. 14 is a cross-sectional view in the yz plane along the line XIV-XIV in FIG.

  In the present embodiment, the base material 1 has a bent portion 11. The bent portion 11 is a portion where a part of the base material 1 is bent. In the present embodiment, the bent portion 11 is a portion bent substantially at a right angle along a linear bending line extending in the x direction. is there. By having the bent portion 11, the base material 1 is divided into the upright portion 12 and the bottom portion 13 with the bent portion 11 interposed therebetween, and is L-shaped when viewed in the x direction. The upright portion 12 stands up along the xy plane and has front and rear surfaces in the display state of the package A2. The bottom portion 13 lies along the zx plane, and has a surface facing upward and downward in the display state of the package A2.

  The package 3 has a shape having a hemispherical portion constituted by the main body portion 31 and a columnar portion constituted by the lid portion 32. The lower end of the hemispherical main body 31 faces the bottom 13 of the base 1, and the portion of the tubular film 2 that covers the lower end of the main body 31 is connected to the bottom 13 of the base 1 by one joint 4. It is joined. At the lower end in the y direction of the main body 31, a bottom surface for raising the article 3 to be packaged is provided. In addition, the rear end in the z direction of the cylindrical lid portion 32 faces the upright portion 12 of the base material 1, and the portion of the tubular film 2 that covers the rear end of the lid portion 32 is the other joining portion. 4 is joined to the upright portion 12 of the base 1. Also in the present embodiment, the two joint portions 4 have a long rectangular shape that extends long in the y direction or the x direction, and the widths thereof are substantially the same.

  As clearly shown in FIG. 14, a portion of the base material 1 located between the two joint portions 4 includes a portion near the center in the x direction of the bent portion 11. It is a letter shape. On the other hand, the part of the article 3 that faces the bent part 11 is a main part 31 that is hemispherical. For this reason, the space | gap part 5 is comprised by the part located between the two junction parts 4 among the base materials 1, and the part which covers the main-body part 31 which is the hemispherical part of the to-be-packaged object 3 among the cylindrical films 2. FIG. Is stipulated. It can be said that the gap 5 also opens on both sides in the x direction, which is perpendicular to the direction in which the two joints 4 are separated.

  The bent portion 11 bent at a right angle is an example, and the bending angle is not particularly limited and is set to various angles. Alternatively, the bent portion 11 may be subjected to arc-shaped bending. Moreover, the to-be-packaged object 3 which has a hemispherical part is an example, the whole may be spherical, for example, the structure by which the lower corner | angular part was made into the curved-surface shape may be sufficient. If the shape of the article to be packaged 3 is not completely coincident with the shape of the bent part 11 and the article to be packaged 3 is separated from the bent part 11, the gap 5 can be formed.

  Although the tubular film 2 is a heat-shrinkable uniaxially stretched film, the stretching direction S is set in a direction perpendicular to the x direction as illustrated. That is, in the present embodiment, the extending direction S does not clearly intersect with the direction in which the two joint portions 4 are separated from each other, and is in a relationship in which they are substantially included in the same plane. Correspondingly, the two end edges 21 of the tubular film 2 are located on both sides in the x direction of the package 3.

  Next, manufacture of package A2 is demonstrated below, referring FIG. 15 and FIG.

  FIG. 15 shows an example of a packaging material used for manufacturing the package A1. This packaging material B2 has a base material 1, a tubular film 2 before heating, and two joining portions 4. In addition, in this figure, the cylindrical film 2 exists in the front in the figure, and the base material 1 exists in the back in the figure.

  The base material 1 has a rectangular shape, and a planned bending line 11A extending in the x direction is set. The planned bending line 11A is a line intended to form the above-described bent portion 11. As the planned bending line 11A, a line provided with a perforation or a groove can be adopted to facilitate the bending process, but even a virtual line that is not subjected to a process that facilitates the bending process can be used. Good. In the folded tubular film 2, the stretching direction S is substantially along the y direction. The two end edges 21 are provided at both ends in the x direction. Moreover, the two joining parts 4 are spaced apart in the y direction, and the extending direction S and the direction in which the two joining parts 4 are separated from each other substantially coincide.

  In the manufacture of the package A2 using the packaging material B2, by folding the base material 1 along the planned folding line 11A, as shown in FIG. A bottom 13 is formed. And the cylindrical film 2 before a heating is expanded. Thereby, the cylindrical film 2 becomes the shape opened to x direction both sides. Next, the package 3 is inserted into the inner space of the tubular film 2 from one side in the x direction. Thereafter, as described above, the tubular film 2 is heat-shrinked so that the tubular film 2 is brought into close contact with the package 3. Due to this heat shrinkage, a portion of the base material 1 located between the two joint portions 4, that is, a portion of the bent portion 11 and a portion of the tubular film 2 that covers the hemispherical main body portion 31 of the package 3. A space defined by This space becomes the gap 5. The package A2 is obtained through the above steps.

  Even in such an embodiment, it is possible to avoid unreasonable bending of the base material 1 and to improve the appearance of the package A2. In addition, the packaged object 3 having the hemispherical main body 31 is likely to be unstable, for example, tilted when placed alone on a display shelf or the like. According to the package A <b> 2, the packaged material 3 is supported by the bottom portion 13 of the base material 1. Therefore, the package A2 can be displayed in a stable state.

  17 and 18 show a package according to the third embodiment of the present invention. The package A3 of this embodiment is different from the above-described embodiment in that the package 3 is composed of a plurality of pieces 30. 17 is a perspective view of the package A4 as viewed obliquely from above, and FIG. 18 is a cross-sectional view in the zx plane along the line XVIII-XVIII in FIG.

  In the present embodiment, the article to be packaged 3 is composed of three pieces 30 that are individually formed, and these three pieces 30 are covered with one cylindrical film 2. Although each piece 30 is not particularly limited, it has a cylindrical main body 31 extending in the y direction and a lid 32 attached to the upper end thereof. As a typical example, it is a relatively small size used for cosmetics. Or containers or bottles. Each individual piece 30 itself is not provided with the above-described constricted portion 33 and the concave portion 34. The three pieces 30 are arranged in a state in which the longitudinal direction is in the y direction and substantially in close contact with the x direction.

  The tubular film 2 covers substantially the entire package 3 made up of three pieces 30 in a close contact state. The stretching direction S of the tubular film 2 is perpendicular to the x direction and is included in the yz plane. In addition, two end edges 21 are provided at both ends in the x direction of the tubular film 2, and a part of the package 3 is exposed from the end edges 21. In the present embodiment, the tubular film 2 is in close contact with substantially the entire surface of the three pieces 30 constituting the package 3, but as shown in FIG. Is not intervening.

  The package A3 has three joint portions 4 and two gap portions 5 as shown well in FIG. Each joint 4 has a strip shape extending in the y direction corresponding to the shape of each piece 30 and overlaps the main body 31 of each piece 30 in the z direction. Moreover, the three junction parts 4 are spaced apart and arranged in parallel in the x direction. A gap 5 is formed between two adjacent joints 4. That is, according to the shape and arrangement of the three pieces 30 in the present embodiment, the constricted portion 33 is formed because the x-direction end portions of the adjacent pieces 30 are greatly separated from the base material 1. The void portion 5 is formed by the constricted portion 33.

  As understood from the present embodiment, when the article 3 to be packaged composed of a plurality of pieces 30 is covered with the tubular film 2, the individual pieces 30 do not have the constricted portion 33 or the recessed portion 34. In addition, by appropriately arranging two or more joint portions 4 according to the number, shape, and arrangement of the pieces 30, the constricted portion 33 or the recessed portion 34 is generated, and the gap portion 5 can be formed. As a result, it is possible to avoid the base material 1 from being bent inappropriately.

  The package according to the present invention is not limited to the above-described embodiment. The specific configuration of each part of the package according to the present invention can be varied in design in various ways.

A1 to A3 Package S Stretching direction 1 Base material 11 Bending part 12 Standing part 13 Bottom part 2 Cylindrical film 21 Edge 3 Packaged object 30 Piece 31 Main body part 32 Lid part 33 Constriction part 34 Recess part 35 Swelling part 4 Joining Part 5 Cavity

Claims (3)

Base material,
A cylindrical film that is pre- bonded to the base material before the article to be packaged is inserted ;
At least partially covered with the tubular film a packaging body comprising a material to be packaged, and
The tubular film and the base material are joined by at least two joints spaced apart from each other,
A gap defined by the portion located between the joints of the base material and the tubular film is formed ,
The gap is open on both sides in a direction intersecting the direction in which the joints are arranged,
The articles to be packaged is characterized Rukoto that having a constricted portion or recess in a position corresponding to the gap portion, the wrapper. The tubular film is a uniaxially stretched heat-shrinkable film in which the heat shrinkage along the stretching direction is larger than the heat shrinkage along the other direction,
The packaging body according to claim 1, wherein an extending direction of the tubular film intersects a direction in which the joint portions are arranged. Preparing a packaging material having a tubular fill beam and Taizai joined by at least two joints spaced from one another,
Inserting the article to be packaged having a constricted portion or a concave portion into the tubular film such that the constricted portion or the concave portion faces the base material between the two joint portions;
And a step of bringing the tubular film into close contact with the package by thermally shrinking the tubular film.

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