Pouch

Abstract

To provide a pouch, with a simple configuration, from which a fragrance component in contents can be released outside without opening while avoiding the contents leaking out or deteriorating in quality and an excessive decrease in quantity of remaining fragrance component in the contents.SOLUTION: A pouch 10 is formed in a bag shape by forming an outer peripheral seal portion 20 formed by thermally bonding films 11. Each of the films has at least an innermost layer 11d exposed in an accommodating portion formed from an internal-surface material containing polyethylene resin, and a fragrance component release portion 40 is formed at a position corresponding to the accommodating portion 30 on the external-surface side of the film. The fragrance component release portion is composed of at least one of a grooved material-removal portion 41 or a cut score formed to penetrate in a thickness direction from the external surface of the film to layers other than the innermost layer. The thickness of the innermost layer of the fragrance component release portion is equal to or less than 150 μm, and the density of the internal-surface material forming the innermost layer is equal to or lower than 0.935 g / cm3.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a pouch formed in a bag shape by forming an outer peripheral seal portion obtained by thermally bonding films, and containing contents in a storage portion inside the outer peripheral seal portion.

Background Art

[0002] Conventionally, as a container for containing contents such as shampoo and detergent, a pouch formed in a bag shape by forming an outer peripheral seal portion obtained by thermally bonding films, and containing contents in a storage portion inside the outer peripheral seal portion has been widely used.

[0003] In such a pouch, in order to prevent external leakage of the contents and deterioration of the quality, it is common to impart gas barrier properties, fragrance retention properties, etc. to the film constituting the pouch. However, in the case of a product in which a pouch contains shampoo, detergent, etc., whose quality is affected by fragrance, there is a desire to release the fragrance components contained in the contents to the outside in the display state of the product, etc., in order to arouse the consumer's desire to purchase.

[0004] And, as a measure for releasing the fragrance components contained in the contents to the outside, as disclosed in Patent Document 1, by providing a fragrance hole penetrating the inside and outside of the container in the container for containing the contents, the fragrance components contained in the contents are released to the outside, or as disclosed in Patent Document 2, by opening a window portion formed in the container, the perfume portion sealed in the container is exposed to the outside so that the fragrance components contained in the contents are released to the outside, etc. are known.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the container disclosed in Patent Document 1, since the fragrance holes for releasing the fragrance components contained in the content to the outside are formed to penetrate between the inside and outside of the container, when the content is a liquid such as shampoo or detergent, the content will leak to the outside and it cannot be used. Also, since external oxygen etc. will enter the container, there is a problem that the quality of the content may deteriorate.

[0007] Similarly, in the container disclosed in Patent Document 2, when the content is a liquid such as shampoo or detergent, if the window portion formed in the container is opened, the content will leak to the outside and it cannot be used. Also, since external oxygen etc. will enter the container, there is a problem that the quality of the content may deteriorate. Furthermore, in the containers disclosed in Patent Document 1 and Patent Document 2, there is also a problem that if the fragrance components are excessively released from the fragrance holes or the window portion, the remaining amount of the fragrance components in the content may become insufficient.

[0008] Therefore, the present invention solves these problems, and while having a simple configuration and avoiding external leakage of the content, deterioration of the quality, and excessive reduction of the remaining amount of the fragrance components in the content, it is an object of the present invention to provide a pouch that can release the fragrance components contained in the content to the outside without opening the pouch.

Means for Solving the Problems

[0009] The pouch of the present invention is formed in a bag shape by forming an outer peripheral seal portion obtained by thermally bonding films, and the content is accommodated in an accommodation portion inside the outer peripheral seal portion. The following A pouch, wherein the content is a liquid, the film is composed of a plurality of layers laminated in the thickness direction, The plurality of layers includes at least the innermost layer that is exposed to the accommodating portion and is formed from an inner surface material containing a polyethylene-based resin. On the outer surface side of the film, a fragrance component releasing portion is formed at a position corresponding to the accommodating portion. The fragrance component releasing portion is composed of a groove-shaped material removing portion formed so as to penetrate the layers other than the innermost layer in the thickness direction from the outer surface of the film. The total area of the material removing portion in the pouch plane direction is 30 to 400 mm 2 and The ratio of the area of the material removing portion in the pouch plane direction in the fragrance component releasing area including the material removing portion is 2 to 60 area%. In the fragrance component release area including the material removal part, the ratio of the area of the material removal part in the pouch plane direction is the maximum value when assuming an arbitrary virtual area of a square with a length of 30 mm and a width of 30 mm to include the material removal part and calculating the ratio of the area of the material removal part in this virtual area. The thickness of the innermost layer in the fragrance component releasing portion is 40 μm or more and 130 μm or less, and the density of the inner surface material forming the innermost layer is 0.935 g / cm 3 or less. The pouch is configured as a standing pouch, and the fragrance component releasing portion is formed at a position straddling the liquid level of the liquid constituting the content or at a position below the liquid level in a state where the unopened pouch is standing, thereby solving the above problems.

Advantages of the Invention

[0010] According to the invention according to claim 1, at a position corresponding to the accommodating portion on the outer surface side of a film composed of a plurality of layers laminated in the thickness direction, and the innermost layer is formed from an inner surface material containing a polyethylene-based resin, a fragrance component releasing portion composed of at least one of a groove-shaped material removing portion or a cut-shaped score formed so as to penetrate the layers other than the innermost layer in the thickness direction from the outer surface of the film is formed. The thickness of the innermost layer in the fragrance component releasing portion is 150 μm or less, and the density of the inner surface material forming the innermost layer is 0.935 g / cm 3By the following, while avoiding external leakage of the contents, deterioration of the quality of the contents due to intrusion of oxygen or the like from outside the pouch, and furthermore, excessive reduction of the remaining amount of the fragrance component in the contents, and without opening the pouch, the fragrance component contained in the contents can be surely released to the outside through the innermost layer of the fragrance component release portion.

[0011] Also , since the ratio of the area of the material removal portion in the pouch plane direction in the fragrance component release area is 2 to 60 area%, the higher the density of the material removal portion, the higher the degree of release of the fragrance component to the outside. However, excessive release of the fragrance component and inflow into the accommodation portion of the external atmosphere are suppressed, and deterioration of the quality of the contents is prevented. As a result, the fragrance component can be stably released, and as a result, consumers can surely recognize the fragrance component over a long period of time.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0013] Hereinafter, a pouch 10 according to an embodiment of the present invention will be described with reference to the drawings.

[0014] As shown in Fig. 1, the pouch 10 is formed in a bag shape by forming an outer peripheral seal portion 20 in which the front and back films 11 are thermally adhered, and the contents are accommodated in an accommodation portion 30 inside the outer peripheral seal portion 20.

[0015] As shown in Fig. 1, on one of the front and back films 11, at a position corresponding to the accommodation portion 30 (that is, a position where the front and back films 11 are not thermally adhered inside the outer peripheral seal portion 20), a fragrance component release portion 40 for releasing the fragrance component contained in the contents to the outside of the pouch 10 is formed.

[0016] As shown in Fig. 1, the fragrance component release portion 40 is composed of at least one of a material removal portion 41 formed in a partial range in the thickness direction of the film 11 (that is, a range that does not penetrate the film 11 in the thickness direction) or a cut-like score. In the present embodiment, it is composed of a groove-shaped material removal portion 41 formed from the outer surface of the film 11 (that is, the surface facing the outside of the pouch 10) to the middle of the film 11 in the thickness direction. In this way, by forming the material removal portion 41 (or score) in the film 11, while preventing the leakage of the contents to the outside, the fragrance component of the contents can be permeated through the polyethylene layer 11d, which is a part of the thinned film 11, and released to the outside of the pouch 10. Further, since the fragrance component release portion 40 is composed of the groove-shaped material removal portion 41 (or score) formed from the outer surface of the film 11 to the middle of the film 11 in the thickness direction, it is possible to form the groove-shaped material removal portion 41 (or score) without requiring complicated processing or steps, so that an increase in the manufacturing burden can be avoided.

[0017] As shown in Fig. 2, the film 11 is composed of a plurality of layers laminated in the thickness direction, and the plurality of layers constituting the film 11 include an innermost layer formed of an inner surface material containing a polyethylene-based resin. In the present embodiment, a PET (polyethylene terephthalate) layer 11a, an aluminum vapor deposition layer 11b, a nylon layer 11c, and a polyethylene layer (innermost layer) 11d are laminated in order from the outer surface side to form the film 11.

[0018] In this embodiment, as shown in FIG. 2, the material removal part 41 is formed in all of the thickness directions of the PET layer 11a, and is further formed so as to penetrate the nylon layer 11c and the aluminum vapor deposition layer 11b in the thickness direction of the film 11. As in the example of FIG. 2, the material removal part 41 may be configured to penetrate the layers (PET layer 11a, aluminum vapor deposition layer 11b, nylon layer 11c) other than the innermost layer (polyethylene layer 11d) in the plurality of layers constituting the film 11 in the thickness direction. Further, as in the example of FIG. 3, the material removal part 41 may be configured such that the innermost layer (polyethylene layer 11d) in the plurality of layers constituting the film 11 is also slightly shaved in the thickness direction from the upper surface (the surface on the nylon layer 11c side).

[0019] The innermost layer (polyethylene layer 11d) in the material removal part 41 has a thickness of 150 μm or less, and the density of the inner surface material forming the innermost layer (polyethylene layer 11d) is 0.935 g / cm 3 is as follows. The thickness of the polyethylene layer 11d is preferably 40 μm or more and 130 μm or less, more preferably 100 μm or more and 130 μm or less. When the thickness of the polyethylene layer 11d is too small, the strength of the pouch itself may be low, or the fragrance retention property for suppressing the permeation of the fragrance component may be excessively low, resulting in excessive release of the fragrance component more than intended over time and excessive reduction of the remaining amount of the fragrance component in the content. As a result, it may not be possible to obtain the initial aromaticity of the content over a long period, or the inflow of the external atmosphere into the accommodation part may be promoted and the quality deterioration of the content may not be prevented. On the other hand, when the thickness of the polyethylene layer 11d is too large, sufficient fragrance component release ability may not be obtained in the fragrance component release part 40, and there may be a risk that the fragrance component contained in the content cannot be sufficiently released to the outside without opening the pouch. The thickness of the innermost layer (polyethylene layer 11d) in the material removal part 41 refers to the distance t between the lowermost surface 41a exposed outside the pouch 10 in the material removal part 41 and the accommodation part 30.

[0020] The polyethylene layer 11d is a heat-sealable layer. The inner surface material forming the polyethylene layer 11d contains a polyethylene-based resin and has a density of 0.935 g / cm 3 It may be any as long as it is as follows. For example, linear low-density polyethylene, low-density polyethylene, medium-density polyethylene, etc. can be exemplified. The density of the inner surface material forming the polyethylene layer 11d is preferably 0.905 g / cm 3 or more and 0.925 g / cm 3 or less. When the density of the inner surface material forming the polyethylene layer 11d is too small, the aroma retention property for suppressing the permeation of the aroma component becomes excessively low, resulting in excessive release of the aroma component beyond the intended level and excessive reduction in the remaining amount of the aroma component in the content liquid. As a result, there is a risk that the desired aromaticity of the content cannot be obtained over a long period, or that the inflow of the external atmosphere into the accommodating portion cannot be prevented, leading to quality deterioration of the content liquid. On the other hand, when the density of the inner surface material is too large, sufficient aroma component release ability may not be obtained in the aroma component release portion 40, and there is a risk that the aroma component contained in the content liquid cannot be sufficiently released to the outside without opening the pouch.

[0021] The material removal portion 41 is formed so as to penetrate the first synthetic resin layer made of a synthetic resin having a higher glass transition point than the other synthetic resin layers constituting the film 11 in the thickness direction. In the present embodiment, as shown in FIG. 2, it is formed so as to penetrate the PET layer 11a, which is the first synthetic resin layer, in the thickness direction. By forming at least one of the material removal portion 41 or the score in the first synthetic resin layer made of a synthetic resin having a higher glass transition point than the other synthetic resin layers, the material removal portion or the score is formed in the first synthetic resin layer having a high glass transition point and high aroma retention property, and the aroma component can be stably released.

[0022] The plurality of layers constituting the film 11 includes a fragrance component barrier layer that suppresses the permeation of the fragrance component, and a score (material removal portion 41) is formed so as to penetrate the fragrance component barrier layer included in the plurality of layers constituting the film 11 in the thickness direction. In the present embodiment, as shown in FIG. 2, a score (material removal portion 41) is formed so as to penetrate the aluminum vapor deposition layer 11b, which is a fragrance component barrier layer (metal layer), in the thickness direction. The fragrance component barrier layer can be composed of an aluminum foil, a vapor deposition layer of a metal, or an inorganic vapor deposition film in which an inorganic vapor deposition layer is provided on a polyester film or a polyamide film. Examples of the inorganic vapor deposition layer include a vapor deposition layer of a metal oxide such as aluminum oxide and a vapor deposition layer of an inorganic oxide such as silicon oxide. Further, it may be composed of a coating film layer containing a barrier resin coating agent composed of a polycarboxylic acid-based polymer and vinylidene chloride. Further, it may be a film layer having barrier properties composed of an ethylene-vinyl alcohol copolymer or the like. Since the plurality of layers constituting the film includes a fragrance component barrier layer and a material removal portion 41 (or score) that penetrates the fragrance component barrier layer in the thickness direction is formed, the fragrance component can be stably released while ensuring the storage stability of the content liquid because the material removal portion 41 (or score) is formed by penetrating a fragrance component barrier layer having high fragrance retention that suppresses the permeation of the fragrance component in the thickness direction. Further, since the fragrance component barrier layer includes an inorganic oxide or a vapor deposition layer of a metal, the material removal portion 41 (or score) is formed in the fragrance component barrier layer having high fragrance retention that surely suppresses the permeation of the fragrance component, so that the fragrance component can be surely released while ensuring the storage stability of the content.

[0023] Further, the material removal portion 41 is formed so as to penetrate the metal layer included in the plurality of layers constituting the film 11 in the thickness direction. In the present embodiment, as shown in FIG. 2, it is formed so as to penetrate the aluminum vapor deposition layer 11b, which is a metal layer (fragrance component barrier layer), in the thickness direction. Further, FIG. 3 shows another configuration of the film 11, which is formed of a nylon layer 11c, an aluminum foil layer 11e, and a polyethylene layer 11d in order from the outer surface side. In the case of this configuration, the material removal portion 41 is formed so as to penetrate the aluminum foil layer 11e, which is a fragrance component barrier layer (metal layer). Since the material removal portion 41 or the score is formed so as to penetrate the metal layer (aluminum vapor deposition layer 11b) in the thickness direction, the material removal portion 41 or the score is formed in the metal layer having high fragrance retention, and the fragrance component can be stably released.

[0024] The material removal portion 41 constituting the fragrance component release portion 40 can be formed by, for example, laser irradiation. For laser irradiation, a YAG laser, a carbon dioxide laser, an argon ion laser, etc. can be used, and preferably, a carbon dioxide laser having a wavelength of 9.3 μm, a carbon dioxide laser having a wavelength of 10.6 μm, etc. can be mentioned. When the material removal portion 41 is formed by laser irradiation, since the laser light substantially penetrates the innermost layer (polyethylene layer 11d) made of a polyethylene-based resin, it is possible to avoid the formation of through holes in the innermost layer (polyethylene layer 11d) during laser irradiation. However, since the laser light is somewhat absorbed, the thickness of the innermost layer (polyethylene layer 11d) made of a polyethylene-based resin may be slightly reduced compared to the portion not subjected to laser irradiation.

[0025] Further, as shown in FIG. 2, a peripheral protrusion 42 that bulges outward from the outer surface of the film 11 is formed at the periphery of the groove-shaped material removal portion 41 formed on the outer surface of the film 11. This peripheral protrusion 42 is formed at the periphery of the material removal portion 41 by the heat during laser irradiation when the material removal portion 41 is formed on the outer surface of the film 11 by laser irradiation. Since the peripheral protrusion 42 is formed at the periphery of the groove-shaped material removal portion 41 formed on the outer surface of the film 11, the peripheral protrusion 42 can prevent external dust, moisture, etc. from entering the groove-shaped material removal portion 41. Therefore, it is possible to avoid clogging of the groove-shaped material removal portion 41 by external dust and moisture, and the fragrance component can be stably released. In addition, when the consumer touches the outer surface of the film 11, the presence and position of the fragrance component release portion 40 can be perceived. Further, by forming the groove-shaped material removal portion 41 on the outer surface of the film 11 by laser irradiation, it is possible to form the groove-shaped material removal portion 41 and the peripheral protrusion 42 together by the heat during laser irradiation, so that an increase in the manufacturing burden can be avoided.

[0026] In addition, as shown in FIG. 1, the fragrance component release portion 40 is composed of a collection of a plurality of linearly extending material removal portions 41 in the pouch plane direction when the pouch 10 is viewed in plan. Further, the fragrance component release portion 40 may be composed of a collection of a plurality of circularly formed material removal portions 41. When the material removal portion 41 is linear formed by laser irradiation, its line width is, for example, 0.4 mm or less. In addition, the total area of the material removal portion 41 in the pouch plane direction (that is, the total area of the material removal portion 41 when the pouch 10 is viewed in plan) is 30 to 400 mm 2 and is set. Since the fragrance component release portion 40 is composed of a collection of linearly extending material removal portions 41 in the pouch plane direction when the pouch is viewed in plan, the fragrance component can be dispersed and released over a wide range while suppressing an increase in the total area of the fragrance component release portion 40 in the pouch plane direction. In addition, since the total area of the material removal portion 41 constituting the fragrance component release portion 40 in the pouch plane direction is set to 30 to 400 mm 2 it is possible to stably release the fragrance component to such an extent that the fragrance of the content can be confirmed from the outside of the pouch 10 while avoiding excessive release of the fragrance component and shortage of the remaining amount of the fragrance component in the content.

[0027] In addition, in the fragrance component release area including the fragrance component release part 40 (material removal part 41), the area ratio of the fragrance component release part 40 in the pouch plane direction (the density of the material removal part 41) is 2 to 60 area%, preferably 10 to 40 area%. The higher the density of the material removal part 41, the higher the degree of fragrance component release. When the density of the material removal part 41 is 2 to 60 area%, excessive release of fragrance components and inflow into the accommodation part 30 of the external atmosphere are suppressed, and quality deterioration of the content liquid and the like are prevented, while consumers can surely recognize the fragrance components. The fragrance component release area refers to the area including the fragrance component release part 40 and its vicinity. In addition, the area ratio of the material removal part 41 in the pouch plane direction in the fragrance component release area is calculated as follows. That is, an arbitrary virtual area of a square with a length of 30 mm and a width of 30 mm is assumed to include the material removal part 41 in the fragrance component release area, and the area ratio of the material removal part 41 in this virtual area is calculated, and the maximum value is taken as the density of the material removal part 41 in the fragrance component release area.

[0028] On the film 11, a printed part (not shown) with characters, patterns, etc. printed thereon is formed, and the fragrance component release part 40 is formed by aligning it in the pouch plane direction with respect to the printed part. By being formed by aligning it in the pouch plane direction with respect to the printed part formed on the film 11, the material removal part 41 or the score constituting the fragrance component release part can be used as a part of the design on the outer surface of the film 11. In addition, an embossed part (not shown) with embossing is formed on the film 11, and the fragrance component release part 40 is formed by aligning it in the pouch plane direction with respect to the embossed part. By being formed by aligning it in the pouch plane direction with respect to the embossed part formed on the film 11, the design property of the fragrance component release part 40 can be enhanced, the visibility of the position of the fragrance component release part 40 is improved, and the adhesion between the innermost layers (polyethylene layers 11d) can be suppressed, so that the release of fragrance components from the fragrance component release part 40 is suppressed and the fragrance components can be surely released to the outside. By performing embossing in the gas layer above the liquid surface, the contents can be stored in the processed part, and the fragrance release period can be sustained.

[0029] Also, in the present embodiment, as shown in FIG. 1, the pouch 10 is configured as a self-standing standing pouch, and the fragrance component release part 40 is formed at a position straddling the liquid surface L of the content liquid on at least one of the front and back films in a state where the unopened pouch 10 containing the content liquid in the storage part 30 is made to stand. Furthermore, when configured as the standing pouch, the fragrance component release part 40 may be formed on the bottom film.

[0030] As described above, the embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. Also, the configurations of the above embodiments and the configurations of each of the following modification examples may be arbitrarily combined.

[0031] For example, in the above-described embodiment, the structure of the film 11 has been described as having a PET layer 11a, an aluminum vapor deposition layer 11b, a nylon layer 11c, and a polyethylene layer 11d formed in order from the outer surface side. However, the specific structure of the film 11 may be any structure as long as the innermost layer is formed of an inner material containing a polyethylene-based resin, such as a nylon layer 11c and a polyethylene layer 11d formed in order from the outer surface side. As the configuration of the film 11 other than the above, in order from the outer surface side, there are PET layer / aluminum foil layer / nylon layer / linear low density polyethylene layer, PET layer / nylon layer / aluminum foil layer / linear low density polyethylene layer, nylon layer / aluminum foil layer / linear low density polyethylene layer, PET layer / aluminum vapor-deposited PET layer / linear low density polyethylene layer, nylon layer / aluminum vapor-deposited PET layer / linear low density polyethylene layer, aluminum oxide vapor-deposited PET layer / linear low density polyethylene layer, silicon oxide vapor-deposited PET layer / linear low density polyethylene layer, aluminum oxide vapor-deposited PET layer / nylon layer / linear low density polyethylene layer, silicon oxide vapor-deposited PET layer / nylon layer / linear low density polyethylene layer, etc. Also, in the above-described embodiment, the content accommodated in the accommodation part 30 of the pouch 10 was described as being a liquid such as shampoo, rinse, conditioner, detergent, softener, etc., but the specific form of the content of the pouch 10 is not limited to the above. For example, it may be a fluid in which solids and liquids are mixed, or may be a solid. Further, the content accommodated in the accommodation part 30 of the pouch 10 is not limited to non-foods as described above, and may be foods such as coffee beans, tea leaves of black tea, curry, etc. Furthermore, the content accommodated in the accommodation part 30 of the pouch 10 may be a beverage such as liquid coffee. Also, in the above-described embodiment, the pouch 10 was described as being of the standing pouch type, but as the specific form of the pouch 10, various forms such as a pillow type pouch, a gusset type pouch, a flat pouch including a sachet, a bottom gusset pouch, a pouch with a zipper, etc. can be adopted. Also, in the above-described embodiment, it was described that the fragrance component release part 40 is formed only on one of the front and back films 11, but the fragrance component release part 40 may be formed on both of the front and back films 11. Also, in the above-described embodiment, the fragrance component release part 40 was described as being composed of the material removal part 41 formed by removing a part of the film 11, but the fragrance component release part 40 may be composed of a cut-like slit that does not remove a part of the film 11, or may be composed of the material removal part 41 and the slit. In the above-described embodiment, the fragrance component release portion 40 has been described as being formed at a position straddling the liquid level L of the content in a state where the unopened pouch 10 is standing. However, the entire fragrance component release portion 40 may be formed at a position above the liquid level L of the content, or the entire fragrance component release portion 40 may be formed at a position below the liquid level L of the content. In particular, from the viewpoint of enhancing visibility to consumers, it may be formed at the uppermost position in a state where the pouch 10 is standing. Further, in the case of a pouch having a top surface, it may be formed on the top surface of the pouch. In the above-described embodiment, the entire fragrance component release portion 40 has been described as being formed at a position corresponding to the storage portion 30. However, a part of the fragrance component release portion 40 may be formed at a position corresponding to the outer peripheral seal portion 20. In the above-described embodiment, the processing method of the material removal portion 41 has been described as using laser irradiation. However, the processing methods of the material removal portion 41 and the score are not limited to the above. For example, a half-cut process, a cutting process, a grinding process, etc. using a jig such as a blade may be used to form the material removal portion 41 and the score. Further, the processing method of the material removal portion 41 and the score in the pouch 10 is not limited to a method of performing laser processing (laser irradiation) etc. on the film 11 when the film 11 is composed of a plurality of layers. Before the respective layers are laminated to form the film 11, laser processing by laser irradiation or cutting with a blade may be performed on only the fragrance component barrier layer or the material layer including the fragrance component barrier layer, and then a predetermined material layer (for example, the innermost layer) is laminated to form the film 11, whereby the material removal portion 41 and the score may be formed.

[0032] Also, in the above-described embodiments, the fragrance component releasing portion 40 has been described as being composed of a collection of a plurality of material removal portions 41 linearly extending in the pouch plane direction. However, the specific form of the fragrance component releasing portion 40 is not limited to the above. For example, it may be linear in the pouch plane direction, formed in a planar shape, dot-shaped, chain-line-shaped or broken-line-shaped, or a combination thereof. From the viewpoint of high resistance to dropping and bag breakage, it is preferable that the fragrance component releasing portion 40 is composed of a discontinuous shape such as dots or broken lines rather than a continuous linear shape. FIGS. 4(a) to (f) show examples in which the fragrance component releasing portion 40 is composed of one linearly extending material removal portion 41. FIGS. 4(g) to (m) show examples in which the fragrance component releasing portion 40 is composed of a planar material removal portion 41. FIG. 5(a) shows an example in which the fragrance component releasing portion 40 is composed of a collection of broken-line-shaped material removal portions 41. FIG. 5(b) shows an example in which the fragrance component releasing portion 40 is composed of a dot-shaped material removal portion 41 and one linearly extending material removal portion 41. FIGS. 5(c) and (d) show other examples in which the fragrance component releasing portion 40 is composed of a collection of a plurality of linear material removal portions 41. Also, as shown in FIGS. 6(a) to (c), the fragrance component releasing portion 40 may be configured such that the material removal portion 41 has a shape of a significant character, number, or symbol. As shown in FIG. 7, the material removal portion 41 may be configured to have a shape of a design pattern. In FIGS. 4 to 7, the blackened regions are the material removal portions 41. Also, according to the strength of the fragrance of the content, the way of fragrance release can be adjusted by changing the processed shape, processed position, and area of the material removal portion 41 and the score that constitute the fragrance component releasing portion 40.

[0033] Hereinafter, experimental examples of the present invention will be described.

[0034] <Experimental Example a: Difference in density of inner surface material> Two films (square with size 116 mm × 116 mm and thickness 70 μm) made of linear low-density polyethylene having the density shown in Table 1 were laminated, three sides were heat-sealed, and after filling with 80 g of body soap containing a fragrance component, the remaining side was heat-sealed to form a liquid seal, and a flat pouch with an unsealed portion being a 100 m × 100 mm square was produced. Five types of pouches using films of each density are designated as pouches [a1] to [a5], respectively.

[0035] Regarding the above-mentioned pouches [a1] to [a5], the following fragrance discrimination test was conducted 24 hours after production. The results are shown in Table 1. 〔Fragrance Discrimination Test〕 Twenty testers scored the degree of feeling the fragrance according to the following evaluation criteria in a state where the distance between the pouch and the nose was 50 mm. When the arithmetic mean value (average score) was 2.5 points or more, it was evaluated as "◎", when it was 2.0 points or more and less than 2.5 points, it was evaluated as "○", when it was 1.3 points or more and less than 2.0 points, it was evaluated as "△", and when it was less than 1.3 points, it was evaluated as "×". - Evaluation Criteria - 3 points: Sufficiently feel the fragrance 2 points: Feel the fragrance 1 point: Slightly feel the fragrance 0 point: Do not feel the fragrance

[0036]

Table 1

[0037] <Experimental Example b: Difference in Thickness of Inner Layer> Two films (square with size 116 mm × 116 mm and density d = 0.920 g / cm 3 ) made of linear low-density polyethylene having the thickness shown in Table 2 were laminated, three sides were heat-sealed, and after filling with 100 g of body soap containing a fragrance component, the remaining side was heat-sealed to form a liquid seal, and a flat pouch with an unsealed portion being a 100 m × 100 mm square was produced. Seven types of pouches using films of each thickness are designated as pouches [b1] to [b7], respectively.

[0038] Regarding the above pouches [b1] to [b7], an odor discrimination test was conducted 24 hours after production in the same manner as in Experimental Example a. The results are shown in Table 2.

[0039]

Table 2

Explanation of Symbols

[0040] 10 ··· Pouch 11 ··· Film 11a ··· PET layer (first synthetic resin layer) 11b ··· Aluminum vapor deposition layer (metal layer) 11c ··· Nylon layer 11d ··· Polyethylene layer 20 ··· Outer peripheral seal part 30 ··· Accommodation part 40 ··· Fragrance component release part 41 ··· Material removal part 41a ··· Lowermost surface 42 ··· Peripheral protrusion part

Claims

【Claim 1】 A pouch formed in a bag shape by forming an outer peripheral seal portion obtained by thermally bonding films, and containing contents in a storage portion inside the outer peripheral seal portion, wherein the contents are liquid, the film is composed of a plurality of layers laminated in the thickness direction, the plurality of layers include at least an innermost layer formed from an inner surface material containing a polyethylene-based resin and exposed to the storage portion, a fragrance component release portion is formed at a position corresponding to the storage portion on the outer surface side of the film, the fragrance component release portion is composed of a groove-shaped material removal portion formed so as to penetrate layers other than the innermost layer in the thickness direction from the outer surface of the film, The total area in the pouch plane direction of the material removal part is 30 to 400 mm ２ and the ratio of the area of the material removal portion in the pouch plane direction in the fragrance component release area including the material removal portion is 2 to 60 area%, the ratio of the area of the material removal portion in the pouch plane direction in the fragrance component release area including the material removal portion is the maximum value when calculating the ratio of the area of the material removal portion in an arbitrary virtual area of a square of 30 mm in length and 30 mm in width, assuming that the virtual area includes the material removal portion, The thickness of the innermost layer in the fragrance component releasing part is 40 μm or more and 130 μm or less, and the density of the inner surface material forming the innermost layer is 0.935 g / cm 3 or less, the pouch is configured as a standing pouch, and the fragrance component release portion is formed at a position straddling the liquid level of the liquid constituting the contents or at a position below the liquid level in a state where the unopened pouch is standing. A pouch characterized by that.

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