JP2020045150A - Pyramid package - Google Patents

Abstract

To provide a pyramid package that can more reliably bring an object to be packaged into contact with a liquid and suppress a packaging film from being submerged.SOLUTION: A pyramid-shaped packaging film A1 including a pyramid-shaped packaging film 1 having a storage part 11 and four top parts 12, and an object 8 to be packaged stored in the packaging film 1. The packaging film 1 has a configuration in which water-soluble paper and a water-soluble resin are laminated, and takes a first state in which a top part 121, which is one of the four top parts 12, is exposed from a liquid surface and the other three top parts 122 float on an aqueous liquid 9 in a posture in which it is present in the liquid when fed into the aqueous liquid 9, and a second state in which the four top parts 12 are still connected and the object 8 to be packaged comes into contact with the aqueous liquid 9 while the packaging film 1 undergoes a bag break originating from dissolution, after going through the first state.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pyramid package in which an article to be packaged is contained by a packaging film.

  Pyramidal packages are widely used as one form of self-supporting packages. The pyramid package disclosed in Patent Literature 1 (FIG. 4A) includes a packaging film forming a pyramid-shaped storage unit and a packaged object stored in the storage unit. The packaging film is formed of a soluble sheet that dissolves in a liquid such as water. When the pyramidal package is thrown into water, the soluble sheet dissolves, and the accommodation section opens. Thus, the package comes into contact with water.

JP-T-2005-500211

  However, in some cases, after the container is opened and the object to be packaged comes into contact with water, the package film sinks in water before completely dissolving, and reaches the bottom surface. In particular, when the packaging film is only a water-soluble resin film, this phenomenon is remarkable, and the packaging film which is submerged and adheres to the bottom surface becomes a lump, and is dissolved only from the surface of the lump. There is a possibility that dissolution of the article to be packaged may be hindered, or the undissolved packaging film may deteriorate the surrounding environment.

  The present invention has been conceived under the circumstances described above, and provides a pyramid-shaped packaging body that can more reliably contact an object to be packaged with a liquid and suppress the packaging film from being submerged. The subject.

  The pyramid package provided by the present invention is a pyramid package including a pyramid-shaped packaging film having a housing portion and four tops, and a packaged object stored in the packaging film, wherein the packaging film Has a structure in which a water-soluble paper and a water-soluble resin are laminated, and when put into an aqueous liquid, one of the four tops is exposed from the liquid surface and the other three tops are liquid. A first state floating in the aqueous liquid in a posture existing therein, and after passing through the first state, the four top portions are still connected to each other while the packaging film undergoes a bag break starting from dissolution in the packaging film. A second state in which an object comes into contact with the aqueous liquid.

  In a preferred embodiment of the present invention, the weight of the packaged object is not less than 20% and not more than 80% of a weight which is a product of a volume of the storage section and a density of the aqueous liquid.

  In a preferred embodiment of the present invention, the weight of the article to be packaged is not less than 60% and not more than 80% of the weight which is the product of the volume of the storage section and the density of the aqueous liquid.

  In a preferred embodiment of the present invention, the packaging film has a remaining portion that is in contact with the liquid surface in the second state and partially blocks a bag break originating from dissolution.

  In a preferred embodiment of the present invention, the remaining portion is constituted by a layer provided on the surface of the packaging film and made of a material that prevents dissolution.

  In a preferred embodiment of the present invention, the remaining portion is configured by heat sealing a part of the packaging film.

  In a preferred embodiment of the present invention, the wrapping film has a gripping instruction portion for instructing a portion to be gripped when being charged into the aqueous liquid.

  According to the present invention, when the pyramid package is put into the aqueous liquid, it takes the first state and then takes the second state. First, by taking the first state, it is possible to prevent, for example, the pyramid package from being completely submerged in the aqueous liquid before the bag breaks, or from reaching the bottom of the container. Next, by taking the second state, the packaging film floating near the liquid surface of the aqueous liquid breaks, and the packaged object comes into contact with the aqueous liquid and discharges into the aqueous liquid. be able to. Further, in the second state, by maintaining the state in which the four tops are connected, it is possible to maintain the state in which the entire packaging film floats for a longer time, and a part of the packaging film. Can be prevented from adhering to the bottom and the like. Therefore, it is possible to more reliably bring the packaged object into contact with the aqueous liquid and suppress the packaging film from being submerged.

  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 showing the pyramid wrapping object concerning a 1st embodiment of the present invention. It is a sectional view showing typically a pyramid package concerning a 1st embodiment of the present invention. It is sectional drawing which shows typically the use of the pyramid package which concerns on 1st Embodiment of this invention. It is a sectional view showing typically the 1st state of the pyramid wrapping object concerning a 1st embodiment of the present invention. It is sectional drawing which shows typically the 2nd state of the pyramidal package which concerns on 1st Embodiment of this invention. It is the sectional view and principal part enlarged sectional view showing typically the 1st state of the 1st modification of the pyramid wrapping object concerning a 1st embodiment of the present invention. It is sectional drawing which shows typically the 2nd state of the 1st modification of the pyramid package which concerns on 1st Embodiment of this invention. It is sectional drawing which shows typically the 1st state of the 2nd modification of the pyramid package which concerns on 1st Embodiment of this invention. It is sectional drawing which shows typically the 2nd state of the 2nd modification of the pyramid package which concerns on 1st Embodiment of this invention. It is a perspective view which shows the 3rd modification of the pyramid package which concerns on 1st Embodiment of this invention. It is a perspective view showing a pyramid wrapping object concerning a 2nd embodiment of the present invention.

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

<First embodiment>
1 and 2 show a pyramid package according to a first embodiment of the present invention. The pyramid package A1 of the present embodiment has a packaging film 1, a remaining portion 4, and an article to be packaged 8, and a pair of horizontal seal portions 2 and vertical seal portions 3 are formed.

  FIG. 1 is a perspective view showing a pyramid package A1. FIG. 2 is a cross-sectional view schematically illustrating the pyramid package A1. In FIG. 2, the horizontal seal portion 2 and the vertical seal portion 3 are omitted for convenience of understanding.

  The packaging film 1 is a main material of the pyramid packaging body A1. The packaging film 1 is made of a water-soluble material that dissolves in the aqueous liquid 9 shown in FIGS. The aqueous liquid 9 is not particularly limited, and examples thereof include water and an aqueous solution.

  Examples of the water-soluble material include water-soluble paper (including a water-soluble fiber material such as a nonwoven fabric) and a water-soluble resin. Examples of the water-soluble resin include natural polymers (starch derivatives and the like), synthetic polymers (polyvinyl alcohol, butenediol / vinyl alcohol copolymer, polyvinyl ether, polyvinylpyrrolidone, sodium polyacrylate, polyacrylamide, etc.) Synthetic polymers (such as cellulose derivatives) and the like can be mentioned.

  The form of the packaging film 1 is a laminate composed of at least two layers including a water-soluble paper and a water-soluble resin, or a composite composed of two superposed bodies.

  In the present embodiment, the packaging film 1 has a sealant layer on the inner surface layer and a base film layer on the outer surface layer to realize the formation of a pair of horizontal seal portions 2 and vertical seal portions 3 described later. For example, water-soluble paper (thickness 30 μm) is used as the base film layer, and water-soluble polyvinyl alcohol-based resin (thickness 15 μm) is used as the sealant layer.

  The preferred thickness of the base film layer is 30 μm to 120 μm, and the preferred thickness of the sealant layer is 10 μm to 90 μm. If the thicknesses of the base film layer and the sealant layer are too large, there is a concern that it takes too much time until the dissolution in water is completed. On the other hand, if the thicknesses of the base film layer and the sealant layer are too thin, it is difficult to maintain the shape of the pyramidal package A1, or there is a concern that the shape becomes susceptible to moisture in the air. Further, when the pyramid package A1 is put into the aqueous liquid 9, there is a possibility that the pyramid package A1 may settle.

  The packaging film 1 is formed in a pyramid shape having a housing portion 11 and four top portions 12 by forming a pair of horizontal seal portions 2 and vertical seal portions 3.

  The pair of horizontal seal portions 2 are separated from each other and extend in a direction crossing each other. In the illustrated example, the pair of lateral seal portions 2 extend in a direction substantially perpendicular to each other when viewed from a direction away from each other. The pair of horizontal seal portions 2 are portions where both ends of the tubular film material constituting the packaging film 1 are joined by, for example, heat sealing.

  The vertical seal portion 3 is a portion where both ends in the width direction of the band-shaped film material are joined by, for example, heat sealing in order to convert the band-shaped film material into the above-described tubular film material. In the illustrated example, the vertical seal portion 3 has a so-called jointed-to-the-arm joint form in which the inner surfaces of the packaging film 1 are joined together by, for example, heat sealing. The vertical seal portion 3 traverses an accommodating portion 11 described later, and reaches a pair of horizontal seal portions 2.

  The storage portion 11 is provided between the pair of horizontal seal portions 2 and is a portion that stores the packaged object 8. The four apex portions 12 are portions corresponding to the four corner portions of the accommodating portion 11 having a pyramid shape. In the present embodiment, the four tops 12 include one top 121 and three tops 122.

  The remaining portion 4 is for partially preventing the packaging film 1 from being broken due to dissolution by the aqueous liquid 9. Specific examples of the remaining portion 4 include, for example, a configuration in which the packaging film 1 is prevented from coming into contact with the aqueous liquid 9, and a configuration in which the aqueous film 9 is in contact with the aqueous liquid 9, which is less likely to break the bag than other portions. Can be In the illustrated example, the remaining portion 4 is a layer provided to cover a part of the housing portion 11 by a material capable of suppressing permeation of water as the aqueous liquid 9, for example, by printing or bonding. I have. Examples of such a remaining portion 4 include a layer formed by gravure printing or flexographic printing. In consideration of the environment, printing using an aqueous ink or a biodegradable ink is preferable.

  The position where the remaining portion 4 is provided is a position in contact with the liquid surface 91 of the aqueous liquid 9 in a first state and a second state described later. The reason will be described later. Note that “remaining” in the remaining portion does not mean that the remaining portion is completely melted, but means that the dissolution rate is lower than other portions of the pyramid package. Therefore, if the dissolution rate can be slowed down, even if it is finally completely dissolved, it is included in the remaining portion.

  The article to be packaged 8 is accommodated in the accommodation section 11 of the packaging film 1, and is intended to perform a desired function by being brought into contact with the aqueous liquid 9 in use of the pyramidal package A <b> 1. The article to be packaged 8 is not particularly limited, and is food, daily necessities, cosmetics, medicines, or the like.

  Next, an example of the pyramid package A1 will be described below with reference to FIGS.

The pyramid package A1 of this embodiment has a configuration in which the packaging film 1 is formed by laminating a water-soluble polymer (polyvinyl alcohol: 15 μm in thickness) on water-soluble paper (thickness 30 μm). The length of one side of the housing section 11 of the packaging film 1 is about 75 mm, the height of the housing section 11 is about 61 mm, the seal width of the horizontal seal section 2 is about 5 mm, and the volume of the housing section 11 is about 50 cm ³ . As the aqueous liquid 9, tap water (density 1 g / cm ³ ) was used. The package 8 was made of sodium percarbonate powder and had a density of about 2.1 g / cm ³ and a bulk density of about 1 g / cm ³ . The weight of the packaged object 8 was set in five ways: 10 g, 20 g, 30 g, 40 g, and 50 g. Weight of the packaged product 8, the product of the volume of the housing portion 11 the density of water is an aqueous liquid 9 in (50 cm about ^{3) (1g / cm 3)} ( approximately 50g), 20%, 40% , 60 %, 80%, and 100%.

  First, as shown in FIG. 3, the pyramid package A1 was gripped by the finger Fg. In the illustrated example, the pyramid package A1 is gripped by pinching the vicinity of the top 121 with the finger Fg. Next, the gripped finger Fg was opened to release the pyramid package A1, and the pyramid package A1 was dropped into the aqueous liquid 9 according to gravity as shown in FIG. In the pyramid package A1, the top 121 is exposed from the liquid surface 91 of the aqueous liquid 9, and the three tops 122 are floated in a posture in which the top 122 is present in the aqueous liquid 9. This state is the first state in the present invention. In this example, the remaining portion 4 is in contact with the liquid surface 91 of the aqueous liquid 9. The position (for example, the distance from the top 121) where the packaging film 1 and the liquid surface 91 are in contact with each other is estimated from the volume of the storage unit 11, the density of the aqueous liquid 9, and the weight of the packaged object 8. In this embodiment, since the bulk density of the packaged object 8 is substantially the same as the density of the aqueous liquid 9, the upper surface of the packaged object 8 and the liquid surface 91 of the aqueous liquid 9 substantially match or are close to each other. This is an example of the relationship between the two. The relationship between the two varies as appropriate depending on the bulk density of the packaged object 8, the density of the aqueous liquid 9, the weight of the packaging film 1, and the like.

  When the pyramid package A1 assumes the first state, the packaging film 1 comes into contact with the aqueous liquid 9. Thereby, dissolution of the packaging film 1 with the aqueous liquid 9 started. This melting was the starting point, and as shown in FIG. 5, the packaging film 1 was broken, and the packaging film 1 was formed with a bag breakage portion 13. As a result, the aqueous liquid 9 infiltrated into the storage portion 11 from the bag breaking portion 13, and the packaged object 8 was discharged out of the storage portion 11 while being in contact with the aqueous liquid 9. At this time, although the packaging film 1 breaks, the four tops 12 (one top 121 and three tops 122) are still connected. This state is the second state in the present invention.

  It is considered that the bag breakage of the packaging film 1 was caused by the weight of the article to be packaged 8 being applied to a portion where the strength was reduced by being dissolved by the aqueous liquid 9. The present inventors have observed and studied in detail that, unlike the expectation, the place where such a bag break occurs first is not a part that is located in the aqueous liquid 9 and is in full contact with the aqueous liquid 9, The portion of the packaging film 1 that was in contact with the liquid surface 91 of the aqueous liquid 9, that is, a portion near the so-called waterline. Therefore, in the illustrated example, the remaining portion 4 is provided in a portion of the packaging film 1 which is estimated to be in contact with the liquid surface 91, and the remaining portion 4 is located near the waterline. Thereby, the bag break of the packaging film 1 is prevented by the remaining portion 4. As a result, as shown in FIG. 5, the bag breaking portion 13 does not progress until the packaging film 1 is divided into two, and the four tops 12 (one top 121 and three tops 122) are connected. State is maintained.

  Table 1 shows the results of this example. The submersion depth D is the depth of submergence of the pyramid package A1 from the liquid surface 91 in the first state. The bag breaking time T is a time required from the first state until the packaging film 1 breaks. The submersion depth D increases as the weight W increases. As a result, the bag breaking time T became shorter as the weight W became heavier.

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

  According to the present embodiment, the pyramid package A1 assumes the second state after taking the first state. First, by taking the first state, it is possible to prevent, for example, the pyramid package A1 from being completely submerged in the aqueous liquid 9 before the bag breaks, or from reaching the bottom of the container. For example, when the packaging film 1 is water-soluble, the packaging film 1 is transformed into a sticky state by dissolution. If such a packaging film 1 adheres to the bottom or the like, it is difficult to remove it, and the environment in the aqueous liquid 9 may be disturbed. Next, by taking the second state, the packaging film 1 floating near the liquid level 91 breaks, and the packaged object 8 can be discharged into the aqueous liquid 9 while being in contact with the aqueous liquid 9. For example, compared to a case where the pyramid package A1 is completely submerged and breaks after reaching the bottom, the packaged object 8 can be more reliably brought into contact with the aqueous liquid 9 and the water-based liquid 9 The package 8 can be dispersed over a wide area. Furthermore, in the second state, the state in which the four tops 12 are connected is maintained, so that the whole floating state of the packaging film 1 can be maintained longer, and a part of the packaging film 1 is partially Adhering to the bottom or the like can be avoided.

  In particular, when the packaging film 1 is made of the above-described water-soluble paper and water-soluble resin, it is easy to maintain a pyramid shape during storage before being introduced into the aqueous liquid 9 or after being introduced into the aqueous liquid 9; There is an advantage that when it is put into the aqueous liquid 9, it can be reliably floated. For example, when the packaging film 1 is formed of a single layer of water-soluble paper, heat sealing for forming the horizontal seal portion 2 and the vertical seal portion 3 cannot be performed, or the liquid or fine powdery packaged object 8 is not sealed. There is a concern that it is not suitable for packaging. If a water-soluble polyvinyl alcohol-based resin is laminated on the packaging film 1 as a sealant layer, it is suitable for packaging more kinds of articles 8 to be packaged. On the other hand, when the packaging film 1 is formed of a single layer of a water-soluble resin, there is a possibility that the packaging film 1 will be completely submerged in the aqueous liquid 9 or reach the bottom of the container or the like as described above.

  As shown in Table 1, when the weight W is 50 g, the immersion depth D is 59.5 mm, which is a value close to the height of the accommodation portion 11 of 61 mm. This means that almost the entire storage section 11 is submerged in the aqueous liquid 9. In this case, it is difficult to reliably maintain the first state. Further, even if the packaging film 1 is broken in the second state, the size of the bag breaking portion 13 is remarkably reduced, and it is difficult to bring the packaged object 8 into sufficient contact with the aqueous liquid 9. Therefore, in the example of Table 1, the case where the weight W is 10 g or more and 40 g or less is preferable for reliably maintaining the first state and forming the bag breaking portion 13 having a sufficient size. In this case, the weight W corresponds to 20% or more and 80% or less of the weight which is the product of the volume of the storage section 11 and the density of the aqueous liquid 9.

  Further, the bag breaking time T was approximately less than 7 sec when the weight W was 30 g and 40 g, and was approximately 7 sec or more when the weight W was 10 g and 20 g. If the bag breaking time T is unduly long, in addition to the bag breaking near the waterline, melting or bag breaking at an unintended location may progress or sufficient bag breaking may not occur. From such a viewpoint, the weight W is preferably 30 g or more and 40 g or less. In this case, the weight W corresponds to 60% or more and 80% or less of the weight which is the product of the volume of the storage portion 11 and the density of the aqueous liquid 9.

  Since the remaining portion 4 is provided at a position where the packaging film 1 and the liquid surface 91 are in contact with each other, the bag breaking portion 13 is formed over the entire circumference of the packaging film 1 and the packaging film 1 is completely divided into two. This can be prevented more reliably. By forming the remaining portion 4 with a layer formed by a method such as printing, there is an advantage that the remaining portion 4 can be easily provided at a desired position of the packaging film 1.

  6 to 11 show modified examples and other embodiments 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.

<First Embodiment First Modification>
FIG. 6 shows a first modification of the pyramid package A1. The pyramid package A11 of this modification is different from the above-described example in the configuration of the remaining portion 4. In the present modification, the remaining portion 4 is formed by bending a part of the packaging film 1 and heat-sealing the inner surfaces. 6 is an enlarged cross-sectional view of a main part of the remaining portion 4 which is perpendicular to the vertical direction in the drawing. The heat-sealed remaining portion 4 is about twice as thick as the surrounding portion. For this reason, it is a part that is less likely to be dissolved by the aqueous liquid 9 than the surrounding part, and that it is harder to break the bag due to the weight of the packaged object 8. For this reason, when the second state shown in FIG. 7 is taken after the first state shown in FIG. 6, the heat-sealed part constituting the remaining part 4 is formed by connecting the top part 121 and the three top parts 122. Maintain state.

  According to such a modification, the packaged object 8 can be more reliably brought into contact with the aqueous liquid 9 and the packaging film 1 can be suppressed from being submerged. Further, there is an advantage that the formation of the remaining portion 4 by heat sealing can be performed, for example, before or after the step of forming the pair of horizontal seal portions 2 or collectively.

<First Embodiment Second Modification>
FIG. 8 shows a second modification of the pyramid package A1. In the pyramid package A12 of this modification, the remaining portion 4 is constituted by a part of the vertical seal portion 3. Note that the vertical seal portion 3 having the configuration described in the pyramid package A1 tends to lie along the housing portion 11 due to the formation of the pair of horizontal seal portions 2 and the like. However, in FIG. The seal portion 3 is shown in an upright state with respect to the housing portion 11. Further, taking the vertical seal portion 3 shown in FIG. 1 as an example, the vertical seal portion 3 reaches the pair of horizontal seal portions 2 but does not reach the top portion 121. In other words, in the vertical direction in FIG. 8, the vertical seal portion 3 can exist at the same depth as the top portion 122, but does not exist at the height of the top portion 121. In the figure, this positional relationship is schematically shown.

  When formed by heat sealing, the vertical seal portion 3 prevents the packaging film 1 from breaking as in the case of the remaining portion 4 of the pyramid package A11, and in the second state shown in FIG. It has a function of linking the P.122. The vertical seal portion 3 is provided for finishing a strip-shaped film material to be a material of the packaging film 1 into a tubular shape. As shown in FIG. It is formed so as to overlap. This is because even if the draft line at the position where the storage portion 11 and the liquid surface 91 of the aqueous liquid 9 are in contact with each other is slightly shifted, the remaining portion 4 can be reliably formed as long as the vertical seal portion 3 is in contact with the liquid surface 91. There is an advantage that you can.

<First Embodiment Third Modification>
FIG. 10 shows a third modification of the pyramid package A1. In the pyramid package A13 of this modification, the remaining portion 4 has a first portion 41 and a second portion 42.

  In the figure, in the first state and the second state, a draft line WL, which is a line where the packaging film 1 and the liquid surface 91 of the aqueous liquid 9 are in contact, is schematically shown. The first portion 41 is located on the top 122 side (lower side in the drawing) than the waterline WL. The second portion 42 is provided at a position that is assumed to overlap the waterline WL, and is formed over the entire circumference of the packaging film 1.

  In the second state after the pyramid packaging body A13 has taken the first state, the second part 42 overlaps the draft line WL serving as the starting point of the bag break in the above-described example. For this reason, the dissolution of the packaging film 1 immediately below the waterline WL (the portion adjacent to the top 122 side) is the starting point of the bag breaking of the packaging film 1. Therefore, the position where the packaging film 1 breaks can be shifted downward with respect to the waterline WL. In addition, it is possible to adjust the time, for example, by delaying the time from the first state to the start of bag breaking in the second state. On the other hand, the first part 41 extends partially below the second part 42 and is connected to the horizontal seal part 2. Therefore, even if a bag break occurs immediately below the second portion 42, the first portion 41 can prevent the bag break from reaching the entire circumference of the packaging film 1. Thereby, it is possible to prevent the three tops 122 from being separated from the tops 121.

  The configuration of the second portion 42 is not particularly limited. In addition to the illustrated uniform band shape, a configuration in which a plurality of small regions are scattered in the circumferential direction, or a change in print density from the top 121 side to the top 122 side. A gradation structure may be used. When the separation of the three tops 122 and the tops 121 is avoided by the configuration of the second part 42, or when the separation of the three tops 122 and the tops 121 is avoided by the vertical seal part 3, the remaining part 4 may have a configuration without the first portion 41.

<Second embodiment>
FIG. 11 shows a pyramid package according to the second embodiment of the present invention. The pyramid package A2 of the present embodiment is different from the above-described embodiment in that a grip instructing unit 5 is provided. As for the configuration other than the grip instructing unit 5, various configurations including the above-described pyramid packaging bodies A1, A11, and A12 can be appropriately adopted.

  The grip instructing unit 5 is for instructing the user of the pyramid package A2 on a part to be gripped. The configuration of the gripping instruction unit 5 is not particularly limited as long as it is a configuration that can be recognized as a part to be gripped by the user. The grip instructing unit 5 is appropriately configured by a predetermined display such as printing on the packaging film 1 or a predetermined shape such as forming a cut in the horizontal seal unit 2 and the vertical seal unit 3. In the illustrated example, the grip instructing unit 5 has a configuration in which a thick line surrounding the periphery of the top part 121, which is a part to be gripped, is provided on the packaging film 1 by printing or the like.

  According to the present embodiment as well, the packaged object 8 can be more reliably brought into contact with the aqueous liquid 9 and the packaging film 1 can be prevented from being submerged. Further, by providing the grip instructing unit 5, when the user of the pyramid package A2 grips the pyramid package A2 as shown in FIG. 3, the top part 121 can be reliably gripped. This is because, for example, in a configuration in which the remaining portion 4 is partially provided, such as the pyramid packaging A1 or the remaining portion 4 of the pyramid packaging A11, the remaining portion 4 can be more reliably brought into contact with the liquid surface 91. It is preferred in that respect.

  The pyramid package according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the pyramidal package according to the present invention can be variously changed in design. For example, as long as at least a part of the remaining portion 4 is provided at a position where the remaining portion 4 comes into contact with the waterline, the area, position, number, and the like are not particularly limited. By designing these freely, it is possible to control the bag breaking time of the pyramid package within a desired range.

A1, A11, A12, A13, A2: Pyramidal package 1: packaging film 2: horizontal sealing section 3: vertical sealing section 4: remaining section 5: gripping instruction section 8: packaged object 9: aqueous liquid 11: storage section 12 , 121, 122: Top 13: Breaking part 91: Liquid level D: Submerged depth Fg: Finger T: Breaking time WL: Draft line

Claims (7)

A pyramid-shaped packaging film having a receiving portion and four top portions;
And a packaged object stored in the packaging film, comprising:
The packaging film has a configuration in which a water-soluble paper and a water-soluble resin are laminated,
When injected into an aqueous liquid,
A first state in which any one of the four tops is exposed from the liquid surface and the other three tops float on the aqueous liquid in a position where the tops are present in the liquid;
A second state in which, after passing through the first state, the four top portions are still connected and the object to be packaged comes into contact with the aqueous liquid while the packaging film undergoes a bag break originating from dissolution;
A pyramidal package, characterized in that the package comprises:   2. The pyramid package according to claim 1, wherein the weight of the packaged object is not less than 20% and not more than 80% of a weight which is a product of a volume of the storage section and a density of the aqueous liquid. 3.   3. The pyramid package according to claim 2, wherein the weight of the packaged object is 60% or more and 80% or less of a weight that is a product of a volume of the storage section and a density of the aqueous liquid.   The pyramidal package according to any one of claims 1 to 3, wherein the packaging film has a remaining portion that is in contact with the liquid surface in the second state and partially blocks a bag break originating from dissolution.   The pyramid package according to claim 4, wherein the remaining portion is formed of a layer provided on the surface of the packaging film and made of a material that prevents dissolution.   The pyramid package according to claim 4, wherein the remaining portion is configured by heat sealing a part of the packaging film.   The pyramidal package according to any one of claims 1 to 7, wherein the packaging film has a gripping instruction portion that indicates a portion to be gripped when the water is introduced into the aqueous liquid.

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