Packaging container with plug and packaged product

Abstract

To provide a packaging container with a plug which can be stably supplied while reducing an environmental load, and a packaged product.SOLUTION: A plug-attached packaging container comprising a packaging container obtained by using a laminate for a packaging material comprising at least a base material and a sealant layer, and a plug attached to the packaging container, wherein the plug is made of a resin molded body containing a first recycled resin, the laminate for a packaging material contains a second recycled resin, the first recycled resin and the second recycled resin are different from each other, and a proportion of the recycled resin in the plug-attached packaging container is 10% or more.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a packaging container with a spout and a packaging product. [Background technology]

[0002] Packaging materials used in packaging bags and the like are required to have various properties depending on the application. Therefore, in order to simultaneously satisfy such various performance requirements, packaging materials are generally composed of a laminate including a substrate and a sealant layer. In recent years, there has been a demand for the use of recycled materials in order to reduce waste and the burden on the environment through the effective use of resources, and packaging materials that contain recycled resins as part of the laminate have come into use. As a laminate used in such packaging materials, a laminate film has been known which includes, for example, at least a recycled polyethylene layer and a linear low-density polyethylene layer in this order, in which the recycled polyethylene layer contains 20% by mass or more of recycled polyethylene relative to the total amount constituting the recycled polyethylene layer (see Patent Document 1 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-040660 Summary of the Invention [Problem to be solved by the invention]

[0004] The above Patent Document 1 does not describe attaching a stopper (also called a "spout") to a packaging container obtained using a laminated film. However, when a stopper is attached to a packaging material to make a stoppered packaging container, it is conceivable to use recycled material for the stopper, which accounts for a large mass proportion of the stoppered packaging container, in order to increase the rate of recycled material use.

[0005] However, if the recycled material is the same type as the recycled material used in packaging, it becomes necessary to secure a large amount of that single type of recycled material. In this case, it is not necessarily possible to secure a stable supply of such recycled material on the market, which may make it difficult to stably supply spouted packaging containers.

[0006] An object of the present disclosure is to provide a spout-equipped packaging container and a packaging product that can be supplied stably while reducing the environmental impact. [Means for solving the problem]

[0007] In one aspect, the present disclosure provides "[1] a spouted packaging container comprising a packaging container obtained using a packaging laminate comprising at least a substrate and a sealant layer, and a spout attached to the packaging container, wherein the spout is made of a resin molded product containing a first recycled resin, the packaging laminate contains a second recycled resin, the first recycled resin and the second recycled resin are different types, and the proportion of recycled resin in the spouted packaging container is 10% or more." Here, the proportion of recycled resin in the spouted packaging container may be expressed in units of "volume %" or "mass %." According to the above-mentioned packaging container with a spout, the first recycled resin contained in the resin molded body constituting the spout and the second recycled resin contained in the packaging laminate are different types. Therefore, when the proportion of recycled resin in the packaging container with a spout is 10% or more and constant, it is possible to reduce the amount of recycled resin required per type compared to when the first recycled resin and the second recycled resin are the same type or when recycled resin is contained in only one of the spout or the packaging laminate. This makes it easier to stably secure recycled resins for each type. Furthermore, according to the above-mentioned packaging container with a spout, recycled resin is contained not only in the spout but also in the packaging container. Therefore, the packaging container with a spout enables a stable supply while reducing the environmental impact.

[0008] In another aspect, the present disclosure provides "a packaging container with a spout according to [1], wherein [2] the first recycled resin includes a chemically recycled resin." The stopper is made of a resin molded body containing a first recycled resin, which is a chemically recycled resin. Chemically recycled resin is produced by first depolymerizing a resin through a process appropriate for the material's characteristics, such as monomerization via oil-refined naphtha or depolymerization, followed by polymerization. Therefore, compared to material-recycled resin, which is made by cleaning and crushing used packaging and other resin products, followed by heat melting to recycle the raw material, chemically recycled resin is less likely to be contaminated with foreign matter such as impurities, gels, and aggregates, and the appearance of foreign matter such as gels and aggregates on the surface of the stopper is reduced. Furthermore, because the recycled resin is a chemically recycled resin, the stopper is less likely to yellow or darken. Therefore, the appearance of a packaging container with a stopper can be improved even if the stopper contains recycled resin. Furthermore, unlike material-recycled resin, chemically recycled resin is not subjected to heat treatments such as heat melting after the recycling process, making it less susceptible to thermal degradation and less likely to emit odorous components. Furthermore, because the stopper is made of a resin molded body containing the first recycled resin, and the first recycled resin is a chemically recycled resin, foreign matter derived from recycled materials is not mixed in during molding of the stopper, and mixing in the injection screw is not impaired, making it less likely for carbonized material to accumulate in the stopper. Furthermore, when the stopper is composed of a cap and a main body, unmelted material is not present in the fitting portions of the cap and main body that make up the stopper, preventing poor fitting and reducing leakage from the stopper. Furthermore, foreign matter derived from recycled materials is not mixed in during molding of the stopper, making it less likely for large sink marks to occur originating from the core of the foreign matter when the stopper is molded by injection molding, preventing impairment of the weldability of the stopper. Therefore, the quality of a packaging container with a stopper can be improved even if the stopper contains the first recycled resin.

[0009] In another aspect, the present disclosure provides "a spout-equipped packaging container according to [1], wherein [3] the first recycled resin contains a material recycled resin." Even when contents are placed in a packaging container with a spout, the contents rarely come into contact with the spout, and even if they do, it is only for a very short time. Therefore, even if the first recycled resin contains material recycled resin, foreign matter derived from the material recycled resin is prevented from being mixed into the contents. Furthermore, if the first recycled resin contains material recycled resin, costs and energy consumption in the recycling process can be reduced.

[0010] In another aspect, the present disclosure provides "a spout-equipped packaging container according to any one of [1] to [3], wherein the second recycled resin contains material-recycled polyethylene terephthalate." Currently, collection and recycling schemes for material recycled polyethylene terephthalate have been established, resulting in a relatively stable supply. Therefore, if the second recycled resin among all recycled resins contains material recycled polyethylene terephthalate, a more stable supply of packaging laminates will be possible. In addition, because the recycling process for material recycled polyethylene terephthalate is well established, it is more hygienic than material recycled resins other than material recycled polyethylene terephthalate.

[0011] In another aspect, the present disclosure provides "a spout-equipped packaging container according to any one of [5] to [4], wherein the second recycled resin includes a chemically recycled resin." When contents are placed in a packaging container with a spout, the contents come into contact with the container for a long period of time. When the second recycled resin contains chemical recycled resin, the chemical recycled resin is more hygienic than the material recycled resin, and the incorporation of foreign matter into the contents is suppressed.

[0012] In another aspect, the present disclosure provides, "a packaging container with a spout described in any one of [1] to [5], wherein the proportion of the first recycled resin in the recycled resin in the packaging container with a spout is 10 to 90%, and the proportion of the second recycled resin is 90 to 10%." According to this spouted packaging container, the recycled resin is dispersed in a balanced manner in the spout and the packaging container, making it possible to more stably supply spouted packaging containers.

[0013] As another aspect, the present disclosure provides, "a packaging container with a spout described in any one of [7] to [6], wherein the proportion of the second recycled resin in the recycled resin contained in the packaging container with a spout is smaller than the proportion of the first recycled resin." When contents are placed in a packaging container with a spout, the contents are in contact with the packaging container for a longer period of time than with the spout. Therefore, if the proportion of the second recycled resin contained in the packaging container is lower than the proportion of the first recycled resin contained in the spout, the proportion of recycled resin in the packaging container with a spout can be increased while further preventing foreign matter originating from the recycled resin from being mixed into the contents.

[0014] In another aspect, the present disclosure provides "a spout-equipped packaging container according to any one of [8] to [7], wherein the packaging laminate further comprises a gas barrier layer between the substrate and the sealant layer." In this case, the gas barrier properties of the laminate for packaging material are further improved, and therefore, even when contents are placed in a stoppered packaging container obtained by attaching a stopper to a packaging container obtained using the laminate for packaging material, deterioration of the contents due to gases such as oxygen can be effectively suppressed.

[0015] In another aspect, the present disclosure provides a packaging product comprising a spouted packaging container according to any one of [9] [1] to [8] and contents contained in the spouted packaging container. The packaging product includes a packaging container with a spout, and the packaging container with a spout enables a stable supply while reducing the environmental load. Therefore, the packaging product enables a stable supply while reducing the environmental load. [Effects of the Invention]

[0016] According to the present disclosure, a packaging container with a spout and a packaging product are provided that can be supplied stably while reducing the environmental burden. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a cross-sectional view of one embodiment of a packaging product according to the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view showing one embodiment of a laminate for packaging material for obtaining a packaging container for the packaged product of FIG. [Figure 3] FIG. 3 is a cross-sectional view showing another form of a laminate for packaging material for obtaining a packaging container for the packaged product of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the packaging product of the present disclosure will be described in detail. In the drawings, the same or corresponding parts are designated by the same reference numerals, and duplicated explanations will be omitted. Fig. 1 is a cross-sectional view showing one embodiment of the packaging product according to the present disclosure, and Fig. 2 is a cross-sectional view showing one form of a packaging laminate used in a packaging container of the packaging product of Fig. 1.

[0019] The packaged product 500 shown in FIG. 1 comprises a spouted packaging container 400 and contents C contained in the spouted packaging container 400. The packaging container 400 with a spout includes a packaging container 300 and a spout 310 attached to the packaging container 300. The spout 310 is made of a resin molded body containing a first recycled resin, and the packaging container 300 is obtained using a laminate for packaging material (hereinafter also referred to as "laminate") 100. As shown in Fig. 2, the packaging laminate 100 includes a substrate 10 and a sealant layer 30. The packaging laminate 100 contains a second recycled resin. The first recycled resin and the second recycled resin are different in type, and the proportion A of recycled resin in the spout-equipped packaging container 400 is 10% or more. Here, the recycled resin is composed of the first recycled resin and the second recycled resin. The laminate 100 may further include a second substrate 20 between the substrate 10 and the sealant layer 30 . The laminate 100 may further include a printed layer 50 . The laminate 100 may further include a gas barrier layer 60 .

[0020] The packaging product 500 includes a spouted packaging container 400. In the spouted packaging container 400, the first recycled resin contained in the resin molded body constituting the spout 310 and the second recycled resin contained in the laminate 100 are different types. Therefore, when the proportion of recycled resin in the spouted packaging container 400 is 10% or more and constant, the amount of recycled resin required per type can be reduced compared to when the first recycled resin and the second recycled resin are the same type or when recycled resin is contained in only one of the spout 310 or the laminate 100. This makes it easier to stably secure recycled resins for each type. Furthermore, according to the spouted packaging container 400, recycled resin is contained not only in the spout 310 but also in the packaging container 300. Therefore, the spouted packaging container 400 enables a stable supply while reducing the environmental impact.

[0021] In addition, if the stopper 310, substrate 10, second substrate 20 or sealant layer 30 containing recycled resin is a mixture of recycled resin and non-recycled resin, the mass or volume of each recycled resin in stopper 310, substrate 10, second substrate 20 or sealant layer 30 is calculated according to the proportion of recycled resin in each of stopper 310, substrate 10, second substrate 20 or sealant layer 30, and the proportion (%) of recycled resin in stoppered packaging container 400 is calculated. From the viewpoint of further reducing the environmental impact, the proportion A of recycled resin in the spout-equipped packaging container 400 is preferably 20% or more, more preferably 25% or more, even more preferably 30% or more, and particularly preferably 40% or more. A may be 100%, but from the viewpoint of a stable supply of the spout-equipped packaging container 400, it is preferably 90% or less, more preferably 80% or less, even more preferably 70% or less, and particularly preferably 60% or less.

[0022] In the recycled resins in the spout-equipped packaging container 400, the proportion A1 of the first recycled resin and the proportion A2 of the second recycled resin are not particularly limited, but it is preferable that the proportion A1 of the first recycled resin is 10 to 90% and the proportion A2 of the second recycled resin is 90 to 10%. According to this spouted packaging container 400, the recycled resin is dispersed in a balanced manner in the spout 310 and the packaging container 300, making it possible to more stably supply the spouted packaging container 400. Here, A1 is preferably 20 to 80%, more preferably 30 to 70%, and particularly preferably 40 to 60%. A2 is calculated using the following formula: A2=100-A1

[0023] In the recycled resin contained in the spouted packaging container 400, the proportion A2 of the second recycled resin may be smaller than the proportion A1 of the first recycled resin or may be equal to or larger than A1, but is preferably smaller than A1. When contents C are placed in the spout-equipped packaging container 400, the contents C are in contact with the packaging container 300 for a longer period of time than with the spout 310. For this reason, in the recycled resin contained in the spout-equipped packaging container 400, by making the proportion A2 of the second recycled resin contained in the packaging container 300 smaller than the proportion A1 of the first recycled resin contained in the spout 310, the proportion A of the recycled resin in the spout-equipped packaging container 400 is increased while further suppressing the incorporation of foreign matter originating from the recycled resin into the contents C. Furthermore, when the spout 310 is formed by injection molding and the laminate 100 is formed by film formation, it is easier to replace non-recycled resin with recycled resin if the proportion A1 of the first recycled resin is greater than the proportion A2 of the second recycled resin. Here, A1-A2 should be greater than 0%, but is preferably 5% or greater, more preferably 10% or greater, and particularly preferably 20% or greater.

[0024] The recycled resin may be post-consumer recycled resin (PCR), post-industrial recycled resin (PIR), or a mixture thereof, but preferably contains PCR. PCR can be secured in large quantities on the market, so if the recycled resin is PCR, it becomes possible to more stably supply the spout-equipped packaging container 400.

[0025] The packaging container 300, the spout 310 and the contents C will be described in detail below.

[0026] <<Packaging container>> The packaging container 300 is obtained using a laminate 100 including a substrate 10 and a sealant layer 30. Specifically, the packaging container 300 may be a stunting pouch, as shown in FIG. 1 . In this case, the packaging container 300 is obtained by folding one of the three laminates 100 as a bottom laminate and the remaining two laminates 100 as a top laminate and a back laminate, respectively, with the bottom laminate being folded with the sealant layer 30 facing outward, and inserting it between the top laminate and the back laminate, and sealing the peripheral edges. The packaging container 300 can also be obtained by, for example, folding one laminate 100 and heat-sealing the overlapping edges. Alternatively, the packaging container 300 can be obtained by, for example, overlapping two laminates 100 and heat-sealing the overlapping edges. Furthermore, the packaging container 300 may be a gusset pouch. In this case, the packaging container 300 can be obtained by using two of the four laminates 100 as side laminates and the remaining two laminates 100 as a front laminate and a back laminate, respectively, folding the two side laminates with the sealant layer 30 facing outward, inserting these two side laminates between the front laminate and the back laminate, and sealing the peripheral edges. The laminate 100 includes a second recycled resin. The second recycled resin may be contained in at least one of the substrate 10, the sealant layer 30, and the second substrate 20, or may be contained in all of the substrate 10, the sealant layer 30, and the second substrate 20, or may be contained only in the substrate 10 and the second substrate 20, or may be contained only in the substrate 10 and the sealant layer 30, or may be contained only in the sealant layer 30 and the second substrate 20. The second recycled resin may be contained in any one of the substrate 10, the sealant layer 30, and the second substrate 20.

[0027] <Base material> A substrate film containing a resin material can be used as the substrate 10. Examples of such resin materials include polyester resin, polyolefin resin, polystyrene, polyamide resin such as 6-nylon and 66-nylon, polycarbonate resin, polyacrylonitrile resin, polyimide resin, and other engineering plastics. The resin material is preferably one that has mechanical strength and dimensional stability.

[0028] Examples of polyolefin resins include polyethylene and polypropylene. Polyethylene is a resin containing ethylene as a structural unit. Examples of polyethylene include ethylene homopolymers and copolymers of ethylene with other monomers. The proportion of ethylene in polyethylene is, for example, 80 mol % or more. Examples of other monomers include α-olefins, vinyl acetate, and acrylic esters. The α-olefin may be an olefin having a carbon number in the range of 3 to 20. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, 3-methyl-1-butene, 4-methyl-1-pentene, and 6-methyl-1-heptene. Examples of polyethylene include high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE), ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, etc. These may be used alone or in combination of two or more.

[0029] Polypropylene is a resin containing propylene as a structural unit, but may not contain ethylene as a structural unit, and may be a copolymer of propylene alone or with ethylene or various α-olefins. Examples of polypropylene include homopolypropylene, block polypropylene, and random polypropylene.

[0030] Polyester resins are useful for ensuring the mechanical strength of the substrate 10. Examples of polyester resins include polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate. From the viewpoint of availability, polyethylene terephthalate is preferred. Examples of polyamide resins include nylon 6, nylon 6,6, a copolymer of nylon 6 and nylon 6,6, nylon 9T, nylon 10, polymetaxylylene adipamide (MXD6), nylon 11, nylon 12, and the like.

[0031] The resin material may be a non-recycled resin (petroleum-derived), a recycled resin (second recycled resin), or a mixture thereof. When the resin material contains a recycled resin (second recycled resin), the type of this recycled resin is different from the type of the first recycled resin in the stopper 310. When the resin material contains a recycled resin (second recycled resin) and at least one of the sealant layer 30 and the second substrate 20 contains a recycled resin (second recycled resin), the type of recycled resin in the substrate 10 may be the same as or different from the type of recycled resin in at least one of the sealant layer 30 and the second substrate 20, but from the perspective of a stable supply of the stopper-equipped packaging container 400, it is preferable that they be different. When the resin material contains a recycled resin (second recycled resin), the recycled resin may be either a material recycled resin or a chemical recycled resin, but a chemical recycled resin is preferred. When the contents C are placed in the spouted packaging container 400, the contents C are in contact with the packaging container 300 for a long period of time. When the second recycled resin contains a chemical recycled resin, the chemical recycled resin is more hygienic than the material recycled resin, and the incorporation of foreign matter into the contents C is suppressed. The recycled resin may include a material recycled resin, but the material recycled resin is preferably material recycled polyethylene terephthalate. Currently, collection and recycling schemes for material recycled polyethylene terephthalate have been established, resulting in a relatively stable supply. Therefore, if the second recycled resin among all recycled resins contains material recycled polyethylene terephthalate, a more stable supply of the packaging laminate 100 becomes possible. Furthermore, since the recycling process for material recycled polyethylene terephthalate is well established, it is more hygienic than material recycled resins other than material recycled polyethylene terephthalate.

[0032] Furthermore, the substrate 10 may be composed of a single layer or a laminate of multiple layers. When the substrate 10 is composed of a laminate of multiple layers, the substrate 10 may be formed from a layer configuration of two or more layers. When the resin material contains a recycled resin (second recycled resin), the recycled resin may be contained in at least one layer. The substrate 10 may also be a layer formed by co-extrusion of a layer made of ethylene-vinyl alcohol copolymer or a layer made of polyamide, optionally with an adhesive resin, and stretching the resulting film. Examples of such multilayer substrates include a three-kind five-layer substrate made of recycled resin / adhesive resin / ethylene-vinyl alcohol copolymer / adhesive resin / recycled resin, and a three-kind three-layer substrate made of recycled resin / adhesive resin / ethylene-vinyl alcohol copolymer. Note that in the multilayer substrate 10, the specific gravities of the same materials may differ depending on their functions.

[0033] The substrate 10 may further contain additives such as fillers, antistatic agents, plasticizers, lubricants, light-shielding pigments, and antioxidants, as needed. When the substrate 10 contains a light-shielding pigment, the substrate 10 can function as a light-shielding layer.

[0034] The substrate 10 may be an unstretched film or a stretched film. The stretched film may be a uniaxially stretched film or a biaxially stretched film. The substrate 10 may be composed of either a stretched film or an unstretched film. When the substrate 10 is a uniaxially stretched film, the tear resistance and heat resistance of the laminate 100 can be improved. When the substrate 10 is a biaxially stretched film, the mechanical strength and dimensional stability of the laminate 100 can be improved.

[0035] When an adhesive layer is provided on the surface of the substrate 10, various pretreatments such as corona treatment, plasma treatment, ozone treatment, and flame treatment may be performed on the surface on the adhesive layer side in order to enhance adhesion to the adhesive layer, or a coating layer such as an easy-adhesion layer may be provided.

[0036] The thickness of the substrate 10 is not particularly limited and is, for example, 10 μm or more and 100 μm or less. From the viewpoint of obtaining excellent heat resistance, impact resistance, and gas barrier properties, the thickness of the substrate 10 may be 15 μm or more, 20 μm or more, 25 μm or more, 30 μm or more, or 40 μm or more. Furthermore, from the viewpoint of reducing materials to reduce environmental impact, the thickness of the substrate 10 may be 60 μm or less, or 50 μm or less.

[0037] <Sealant layer> The sealant layer 30 is bonded to another sealant layer 30 by heating and pressurizing when manufacturing a packaging container 300 using the laminate 100, and the sealant layer 30 can be a sealant film containing a resin material. Examples of such resin materials include polyester resins, polyolefin resins, etc. Among these, polyolefin resins are preferred from the viewpoint of improving heat sealability.

[0038] Examples of polyolefin resins include polyethylene and polypropylene. Among them, polyethylene is preferred from the viewpoint of further improving heat sealability. Polyethylene is a resin containing ethylene as a structural unit. Examples of polyethylene include ethylene homopolymers and copolymers of ethylene with other monomers. The proportion of ethylene in polyethylene is, for example, 80 mol % or more. Examples of other monomers include α-olefins, vinyl acetate, and acrylic esters. The α-olefin may be an olefin having a carbon number in the range of 3 to 20. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, 3-methyl-1-butene, 4-methyl-1-pentene, and 6-methyl-1-heptene. Examples of polyethylene include high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE), ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, etc. These may be used alone or in combination of two or more.

[0039] Polypropylene is a resin containing propylene as a structural unit, but may not contain ethylene as a structural unit, and may be a copolymer of propylene alone or with ethylene or various α-olefins. Examples of polypropylene include homopolypropylene, block polypropylene, and random polypropylene.

[0040] Polyester resins are useful for ensuring the mechanical strength of the sealant layer 30. Examples of polyester resins include polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate. From the viewpoint of availability, polyethylene terephthalate is preferred. Examples of polyamide resins include nylon 6, nylon 6,6, a copolymer of nylon 6 and nylon 6,6, nylon 9T, nylon 10, polymetaxylylene adipamide (MXD6), nylon 11, nylon 12, and the like.

[0041] The resin material may be a non-recycled resin (petroleum-derived), a recycled resin (second recycled resin), or a mixture thereof. When the resin material contains a recycled resin (second recycled resin), the type of this recycled resin is different from the type of the first recycled resin in the stopper 310. When the resin material contains a recycled resin (second recycled resin) and at least one of the substrate 10 and the second substrate 20 also contains a recycled resin (second recycled resin), the type of recycled resin in the sealant layer may be the same as or different from the type of recycled resin in at least one of the substrate 10 and the second substrate 20, but from the perspective of a stable supply of the stopper-equipped packaging container 400, it is preferable that they be different. When the resin material contains a recycled resin (second recycled resin), the recycled resin may be a material recycled resin or a chemical recycled resin, but a chemical recycled resin is preferred. When the contents C are placed in the spout-equipped packaging container 400, the contents C come into contact with the packaging container 300 for a long period of time. In particular, the sealant layer 30 comes into direct contact with the contents C. However, when the second recycled resin contains a chemical recycled resin, the chemical recycled resin is more hygienic than the material recycled resin, and the incorporation of foreign matter into the contents C is suppressed. The recycled resin may include a material recycled resin, but the material recycled resin may be material recycled polyethylene terephthalate. Currently, collection and recycling schemes for material recycled polyethylene terephthalate have been established, resulting in a relatively stable supply. Therefore, if the second recycled resin among all recycled resins contains material recycled polyethylene terephthalate, a more stable supply of the packaging laminate 100 becomes possible. Furthermore, since the recycling process for material recycled polyethylene terephthalate is well established, it is more hygienic than material recycled resins other than material recycled polyethylene terephthalate.

[0042] The sealant layer 30 preferably has a melting point lower than that of the substrate 10 disposed on the outside. In this case, when the laminate 100 is heat-sealed, it is possible to heat-seal the sealant layer 30 while suppressing melting of the substrate 10. Furthermore, by heating the laminate 100, the substrate 10 and the sealant layer 30 can be easily separated, and material recycling of the substrate 10 and the sealant layer 30 can be easily performed.

[0043] The sealant layer 30 may further contain additives such as a flame retardant, a slip agent, an antiblocking agent, an antioxidant, a light stabilizer, a tackifier, an antistatic agent, and a light-shielding pigment, as required. When the sealant layer 30 contains a light-blocking pigment, the sealant layer 30 can function as a light-blocking layer.

[0044] The sealant layer 30 may be composed of a single layer or a laminate of multiple layers. When the plurality of layers is, for example, three layers, the stack of the plurality of layers may be comprised of a first outer layer, a middle layer and a second outer layer. Here, the first outer layer and the second outer layer may contain a non-recycled resin, and the intermediate layer may contain a recycled resin. The sealant layer 30 may also be colored white. The sealant layer 30 can be colored white by, for example, including a titanium oxide-based white pigment. The color of the sealant layer 30 is not limited to white, and may be other colors by including pigments other than the white pigment.

[0045] The thickness of the sealant layer 30 is not particularly limited and may be adjusted appropriately depending on the application of the laminate 100. The thickness of the sealant layer 30 may be, for example, 10 μm or more, 25 μm or more, 30 μm or more, 40 μm or more, or 50 μm or more. The thickness of the sealant layer 30 may also be 250 μm or less, 200 μm or less, 150 μm or less, 100 μm or less, 80 μm or less, 60 μm or less, or 50 μm or less.

[0046] <Second base material> The second substrate 20 is a substrate that reinforces the substrate 10, and can further improve the strength of the laminate 100. The second substrate 20 may be provided on the inner side (the sealant layer 30 side) of the substrate 10, as shown in Fig. 2, or on the outer side (the side opposite the sealant layer 30). The second substrate 20 may also be provided on both sides of the substrate 10. The second base material 20 may be a base material film containing a resin material. Examples of such resin materials include engineering plastics such as polyester resin, polyolefin resin, polystyrene, polyamide resin, polycarbonate resin, polyacrylonitrile resin, polyimide resin, etc. As the resin material, a resin material having mechanical strength and dimensional stability is preferred.

[0047] Examples of polyolefin resins include polyethylene, polypropylene, and cyclic olefin copolymers. Polyethylene is a resin containing ethylene as a structural unit. Examples of polyethylene include ethylene homopolymers and copolymers of ethylene with other monomers. The proportion of ethylene in polyethylene is, for example, 80 mol % or more. Examples of other monomers include α-olefins, vinyl acetate, and acrylic esters. The α-olefin may be an olefin having a carbon number in the range of 3 to 20. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, 3-methyl-1-butene, 4-methyl-1-pentene, and 6-methyl-1-heptene. Examples of polyethylene include high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE), ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, etc. These may be used alone or in combination of two or more.

[0048] Polypropylene is a resin containing propylene as a structural unit, but may not contain ethylene as a structural unit, and may be a copolymer of propylene alone or with ethylene or various α-olefins. Examples of polypropylene include homopolypropylene, block polypropylene, and random polypropylene. Examples of the cyclic olefin copolymer include cyclic olefin copolymer (COC) and cycloolefin polymer (COP).

[0049] Polyester resins are useful for ensuring the mechanical strength of the substrate 10. Examples of polyester resins include polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate. From the viewpoint of availability, polyethylene terephthalate is preferred. Examples of polyamide resins include nylon 6, nylon 6,6, a copolymer of nylon 6 and nylon 6,6, nylon 9T, nylon 10, polymetaxylylene adipamide (MXD6), nylon 11, nylon 12, and the like.

[0050] The resin material may be a non-recycled resin (petroleum-derived), a recycled resin (second recycled resin), or a mixture thereof. When the resin material contains a recycled resin (second recycled resin), the type of this recycled resin is different from the type of the first recycled resin in the stopper 310. When the resin material contains a recycled resin (second recycled resin) and at least one of the base layer 10 and the sealant layer 30 also contains a recycled resin (second recycled resin), the type of recycled resin in the base 10 may be the same as or different from the type of recycled resin in at least one of the base layer 10 and the sealant layer 30, but from the perspective of a stable supply of the stopper-equipped packaging container 400, it is preferable that they be different. When the resin material contains a recycled resin (second recycled resin), the recycled resin may be a material recycled resin or a chemical recycled resin, but a chemical recycled resin is preferred. When the contents C are placed in the spouted packaging container 400, the contents C come into contact with the packaging container 300 for a long period of time. When the second recycled resin contains a chemical recycled resin, the chemical recycled resin is more hygienic than the material recycled resin, and the incorporation of foreign matter into the contents C is suppressed. The recycled resin may include a material recycled resin, but the material recycled resin is preferably material recycled polyethylene terephthalate. Currently, collection and recycling schemes for material recycled polyethylene terephthalate have been established, resulting in a relatively stable supply. Therefore, if the second recycled resin among all recycled resins contains material recycled polyethylene terephthalate, a more stable supply of the packaging laminate 100 becomes possible. Furthermore, since the recycling process for material recycled polyethylene terephthalate is well established, it is more hygienic than material recycled resins other than material recycled polyethylene terephthalate. The resin material is processed into a film and used as a substrate film, which may be an unstretched film or a stretched film.

[0051] The second substrate 20 may be composed of a single layer or a laminate of multiple layers. When the second substrate 20 is composed of multiple layers, all of the layers may contain recycled resin as the second recycled resin, or may contain non-recycled resin, or some of the layers may contain non-recycled resin and the rest may contain recycled resin. When the plurality of layers is three layers, the plurality of layers may be composed of a first outer layer, a middle layer, and a second outer layer. Here, the first and second outer layers may contain a non-recycled resin, and the intermediate layer may contain a recycled resin. In this case, it is possible to further reduce the possibility that foreign matter such as impurities, gels, and aggregates will migrate from the second substrate 20 through the sealant layer 30 to the contents due to heating during retort or boiling treatment of the spout-equipped packaging container 400. Therefore, the laminate 100 can be used safely to package contents such as food. The second substrate 20 may be a co-extruded resin film of polypropylene (PP) and ethylene vinyl alcohol resin (EVOH) (PP / EVOH), a co-extruded resin film of polyethylene and EVOH (PE / EVOH), or a co-extruded resin film of multiple layers and EVOH. Here, an example of the multiple layers is a three-layer polypropylene film (PP / PP / PP).

[0052] The thickness of the second substrate 20 is not particularly limited and is adjusted appropriately depending on the use of the spout-equipped packaging container 400. The thickness of the second substrate 20 may be, for example, 10 μm or more, 25 μm or more, 30 μm or more, 40 μm or more, or 50 μm or more. The thickness of the second substrate 20 may also be 100 μm or less, 80 μm or less, 60 μm or less, or 50 μm or less.

[0053] <Adhesive layer> Examples of the adhesive layer include an adhesive layer formed using an adhesive agent and an adhesive layer containing an adhesive resin (hereinafter also referred to as an "adhesive resin layer").

[0054] Examples of adhesives include known adhesives such as urethane adhesives, polyester adhesives, polyamide adhesives, epoxy adhesives, and isocyanate adhesives.

[0055] The adhesive may or may not contain a biomass-derived component, but preferably contains a biomass-derived component from the viewpoint of reducing the environmental impact. Specific examples of biomass-derived components include the "DIC Dry BM Series" manufactured by DIC Corporation and the "ECOAD Series" manufactured by Toyo Ink Co., Ltd. The adhesive may be a gas barrier adhesive that exhibits gas barrier properties after curing. By using a gas barrier adhesive, the adhesive layer has gas barrier properties, and therefore the gas barrier properties of the laminate 100 can be improved. Gas barrier adhesives include epoxy adhesives and polyester / polyurethane adhesives. A specific example of a gas barrier adhesive is " Examples include "Maxive" manufactured by DIC Corporation and "Paslim" manufactured by DIC Corporation.

[0056] The adhesive may be an adhesive containing an organic solvent or an adhesive containing no organic solvent, but from the viewpoint of reducing the environmental load, an adhesive containing no organic solvent (solvent-free adhesive) is preferred.

[0057] The adhesive resin layer may be an extruded or non-extruded resin layer. The adhesive resin is a heat-sealable adhesive thermoplastic resin that can be melted by heat and fused to each other. For example, resins such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-propylene copolymer, methylpentene polymer, acid-modified polyolefin resins obtained by modifying polyolefin resins such as polyethylene or polypropylene with unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, and the like can be used.

[0058] The thickness of the adhesive layer is not particularly limited and may be, for example, 1 μm or more. By making the thickness of the adhesive layer 1 μm or more, sufficient adhesive strength can be obtained. The thickness of the adhesive layer may be 2 μm or more. The thickness of the adhesive layer may be 50 μm or less, 5 μm or less, or 3 μm or less.

[0059] <Print layer> The printed layer 50 can be provided on one or both surfaces of the substrate 10 or the second substrate 20. When the printed layer 50 is provided between layers of the laminate 100, the printed layer 50 is protected by the substrate 10 or the second substrate 20, and therefore deterioration of the printed layer 50 can be prevented. When the printed layer 50 is the outermost layer of the laminate 100 on the side opposite the sealant layer 30 (see FIG. 2), the printed layer 50 can be easily removed when recycling the packaging container 300 including the laminate 100 after disposal. The print layer 50 is a layer that displays characters, pictures, etc., and can be formed using ink. As the ink, for example, inks made by adding various pigments, plasticizers, desiccants, stabilizers, etc. to a binder resin such as a urethane-based resin, an acrylic-based resin, a nitrocellulose-based resin, or a rubber-based resin can be used.

[0060] The ink may be either a water-based ink or an oil-based ink, but is preferably a water-based ink. A water-based ink uses water or alcohol as a solvent, which can further reduce the environmental impact. In particular, when the adhesive is a solventless adhesive, using a water-based ink as the ink can significantly reduce the environmental impact. Furthermore, the ink may or may not be a biomass ink, but from the perspective of reducing the environmental impact, a biomass ink is preferred. Here, biomass ink refers to an ink containing components obtained from biological resources (biomass), such as cotton, pulp, rice bran, vegetable oil, and angiosperm seeds. The ink may be recycled ink, which is made by collecting and recycling used ink, or non-recycled ink, but recycled ink is preferred from the viewpoint of environmental impact. Furthermore, easily recyclable inks can also be used. By using easily recyclable inks, it becomes possible to easily recycle packaging containers after they have been discarded. Specific examples of easily recyclable inks include "SunSpectro Solvawash" manufactured by DIC Corporation.

[0061] <Gas barrier layer> The gas barrier layer 60 can further improve the gas barrier properties of the laminate 100. Gas barrier properties refer to barrier properties against gases such as water vapor or oxygen. Therefore, even if the contents C are stored in a spouted packaging container 400 obtained by attaching a spout 310 to a packaging container 300 obtained using the laminate 100, deterioration of the contents C due to gases such as oxygen can be effectively suppressed. The gas barrier layer 60 may be provided on at least one surface of the substrate 10. Furthermore, when the laminate 100 includes a second substrate 20, the gas barrier layer 60 may be provided on at least one surface of the second substrate 20, as shown in FIG.

[0062] The gas barrier layer 60 may be, for example, a vapor deposition layer such as a metal vapor deposition layer or an inorganic compound vapor deposition layer. Metals include aluminum and silicon. Inorganic compounds include metal oxides such as aluminum oxide and silicon oxide (silica). When the gas barrier layer 60 is a vapor-deposited layer of a metal such as aluminum, the gas barrier layer 60 can function as a light-shielding layer.

[0063] The gas barrier layer 60 may further include an anchor coat layer between the substrate 10 and the vapor deposition layer to improve adhesion therebetween. The material constituting the anchor coat layer may include a polyurethane resin. The polyurethane resin is formed by reacting, for example, an organosilane or organometallic compound with a polyol compound and an isocyanate compound.

[0064] The gas barrier layer 60 may further include an overcoat layer on the vapor deposition layer. The overcoat layer may be a coating layer obtained using a composition containing a water-soluble polymer and silicon alkoxide, or a coating layer made of a resin such as polyurethane.

[0065] <Other> The laminate 100 may further include a layer containing a non-polyolefin resin. Examples of non-polyolefin resins include polyamide resins such as nylon, and polyester resins such as polyethylene terephthalate (PET).

[0066] When the packaging container 300 is formed using a plurality of laminates 100, the plurality of laminates 100 may have the same configuration as each other, or may have different configurations from each other.

[0067] The packaging container 300 may have a half-cut line, and may further have an easy-open part at both ends or one end of the half-cut line. Examples of the easy-open part include a group of scars, and a V-shaped, U-shaped, or I-shaped notch.

[0068] In the adhesive portion of the packaging container 300, the sealant layers 30 of the laminate 100 may be directly bonded to each other by heat sealing, or may be bonded to each other by an adhesive.

[0069] <<Stop plug>> The plug 310 is made of a resin molded body containing a resin material.

[0070] Such a resin material may be, for example, a polyolefin resin.

[0071] Examples of polyolefin resins include polyethylene and polypropylene, among which polyethylene is preferred from the viewpoint of moldability. Polyethylene is a resin containing ethylene as a structural unit. Examples of polyethylene include ethylene homopolymers and copolymers of ethylene with other monomers. The proportion of ethylene in polyethylene is, for example, 80 mol % or more. Examples of other monomers include α-olefins, vinyl acetate, and acrylic esters. The α-olefin may be an olefin having a carbon number in the range of 3 to 20. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, 3-methyl-1-butene, 4-methyl-1-pentene, and 6-methyl-1-heptene. Examples of polyethylene include high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE), ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, etc. These may be used alone or in combination of two or more.

[0072] Polypropylene is a resin containing propylene as a structural unit, but may not contain ethylene as a structural unit, and may be a copolymer of propylene alone or with ethylene or various α-olefins. Examples of polypropylene include homopolypropylene, block polypropylene, and random polypropylene.

[0073] The resin material includes a first recycled resin, which is a different type of recycled resin from the second recycled resin. The recycled resin as the first recycled resin may be either a material recycled resin or a chemical recycled resin, since even when contents C are contained in the packaging container 400 with a stopper, the time that contents C come into contact with the stopper 310 is short. However, the recycled resin is preferably a chemical recycled resin. When the first recycled resin contains a chemical recycled resin, the chemical recycled resin is more hygienic than the material recycled resin, and the incorporation of foreign matter into the contents C is suppressed.

[0074] The proportion of recycled resin in plug 310 is not particularly limited as long as it is greater than 0%, but is, for example, 10% or more, 20% or more, or 50% or more. The proportion of recycled resin in the plug 310 may be 100% or less, 80% or less, or 60% or less. The spout 310 may be attached to any position on the packaging container 300. The spout 310 is attached so as to cross the peripheral edge of the packaging container 300. For example, the spout 310 may be attached to the center or end of a side of the packaging container 300. A portion of the spout 310 is sandwiched between the edges of the laminated bodies 100 facing each other. The stopper 310 typically includes a body portion 310b that allows the contents C to pass through. The stopper 310 may further include a cap 310a that prevents the contents C from being discharged from the body portion 310b. The main body 310b may include, for example, a cap attachment portion to which the cap 310a is attached, a welded portion to which the laminate 100 is welded and which has a through-hole, and a packaging container insertion portion to be inserted into the spouted packaging container 400, all arranged in this order along a certain direction. Here, the cap attachment portion may have a threaded fitting portion formed on its outer circumferential surface. In this case, the cap has the threaded fitting portion on its inner circumferential surface. An inner ring that closes the opening of the cap attachment portion may also be provided on the bottom surface of the cap. The packaging container insertion section may also be a rod-shaped member having an opening formed therein that communicates with the through-hole in the welded portion. The packaging container insertion section may also be configured with multiple plate-shaped members provided on the outer circumferential surface of the rod-shaped member. In this case, the spaces between the multiple plate-shaped members function to guide the contents C into the through-hole in the welded portion.

[0075] <<Contents>> The contents C are not particularly limited and may be selected appropriately depending on the use of the spouted packaging container 400. The contents C are not particularly limited, and examples of the contents C include food, shampoo, conditioner, body soap, detergent, and the like.

[0076] <Manufacturing method of packaged products> Next, an example of a method for manufacturing a packaged product 500 using the laminate 100 will be described.

[0077] First, three laminates 100 are prepared, one of which is a bottom laminate, and the remaining two are a top laminate and a back laminate. The bottom laminate is then folded with the sealant layer 30 facing outward and sandwiched between the top laminate and the back laminate. The top laminate and the back laminate are then heat-sealed, leaving a portion of the peripheral edge thereof unadhesive.

[0078] Meanwhile, a plug 310 is prepared. Then, the main body 310b of the spout 310 is sandwiched between parts (unbonded parts) of the peripheral edges of the front laminate and the back laminate, and the unbonded parts of the front laminate and the back laminate are bonded together by heat sealing, thereby obtaining a packaging container 400 with a spout.

[0079] Next, if the spout 310 has a main body 310b and a cap 310a, the cap 310a is removed from the main body 310b, and the contents C are filled through the main body 310b. In this manner, a packaging product 500 including the packaging container 400 with the spout and the contents C can be manufactured.

[0080] Although the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments. For example, in the packaged product 500 shown in Fig. 1, the packaging container 300 may be a two-sided bag, a three-sided bag, a four-sided bag, or a two-sided bag. The packaging container 300 may be provided with a synthetic resin zipper that can be repeatedly sealed by fitting a strip-shaped protrusion and a strip-shaped groove.

[0081] Furthermore, in the packaging container with a spout of the present disclosure, the packaging laminate may further include a second sealant layer 40, as in the packaging laminate 100 shown in FIG. 3. The second sealant layer 40 is provided on the opposite side of the substrate 10 from the sealant layer 30. The second sealant layer 40 has the same configuration as the sealant layer 30. The second sealant layer 40 may contain a recycled resin (second recycled resin). This recycled resin is a different type of recycled resin from the first recycled resin used in the spout 310. [Example]

[0082] The present disclosure will be explained in more detail below with reference to examples, but the present disclosure is not limited to these examples.

[0083] Example 1 A petroleum-derived biaxially stretched PET film (thickness 18 μm) was prepared as the substrate. In addition, a material recycled (MR) biaxially stretched PET film (thickness 18 μm), which is a second recycled resin, was prepared as the second substrate. An AL vapor deposition film (thickness 10 nm) was formed on the surface of the second substrate, and then an overcoat layer (thickness 300 nm) was formed using a resin composition containing polyvinyl alcohol (PVA) and silicon alkoxide to obtain a structure. In addition, a petroleum-derived linear low-density polyethylene (LLDPE) film (thickness: 50 μm) was prepared as a sealant film, which is the sealant layer. Then, an adhesive for dry lamination (urethane adhesive) was applied to the surface of the substrate to form an adhesive layer with a thickness of 3 μm (dry film thickness), and the second substrate of the structure was attached to this adhesive layer. Next, a dry laminating adhesive (urethane adhesive) was applied onto the overcoat layer of the structure to form an adhesive layer 3 μm thick (dry film thickness), and a sealant film, which serves as a sealant layer, was attached to this adhesive layer to produce a laminate for packaging (substrate / adhesive layer / second substrate / vapor deposition layer / overcoat layer / adhesive layer / sealant layer). From the above laminate for packaging material, rectangular laminates for the front surface and the back surface, each measuring 9 cm x 16 cm, and a rectangular laminate for the bottom surface, measuring 2.7 cm x 9 cm, were prepared. Separately, a resin molded body was prepared from used packaging materials and made of a first recycled resin, chemically recycled high-density polyethylene (PCR ChemiR 100%-HDPE). This resin molded body was used as a stopper. The resin molded body consisted of a main body and a cap. The main body had an outer diameter of 20 mm and a length of 80 cm, and was configured to include, in that order along the longitudinal direction, a cap attachment section to which the cap was attached, a welding section (boat-shaped section) to which the front and back laminates were welded, and a packaging container insertion section to be inserted into the packaging container. The cap attachment section's outer surface formed a threaded engagement. The cap had an inner ring on its bottom surface and a threaded engagement section on its inner surface. The term "PCR ChemiR 100%-HDPE" means that the proportion of post-consumer chemically recycled resin (PCR ChemiR) in the stopper was 100% by mass. The bottom laminate was folded in half and sandwiched between the lower ends of the top laminate and the back laminate, and a stopper was sandwiched between the upper ends of the top laminate and the back laminate. The peripheral edges of the top laminate and the back laminate were then heat-sealed using a heat seal bar to obtain a packaging container with a stopper. The stopper was attached so that it protruded 3 cm from the packaging laminate. In the resulting spouted packaging container, the proportion of recycled resin was 54% by mass, and in the recycled resin contained in the spouted packaging container, the proportion of the first recycled resin was 73% by mass and the proportion of the second recycled resin was 27% by mass.

[0084] Example 2 In the same manner as in Example 1, a laminate for packaging materials (substrate / adhesive layer / second substrate / deposited layer / overcoat layer / adhesive layer / sealing layer) was produced. Then, rectangular laminates for the front surface and the back surface, each measuring 9 cm x 16 cm, and a rectangular laminate for the bottom surface, measuring 2.7 cm x 9 cm, were prepared from the above laminates for packaging material. On the other hand, a stopper was prepared in the same manner as in Example 1, except that the resin molding constituting the stopper was changed from PCR Chemi R 100%-HDPE to material recycled high density polyethylene (MR 100%-HDPE). The bottom laminate was folded in half and sandwiched between the lower ends of the top laminate and the back laminate, a stopper was sandwiched between the upper ends of the top laminate and the back laminate, and the peripheral edges of the top laminate and the back laminate were heat-sealed to obtain a packaging container with a stopper. In the resulting spouted packaging container, the proportion of recycled resin was 54% by mass, and in the recycled resin contained in the spouted packaging container, the proportion of the first recycled resin was 73% by mass and the proportion of the second recycled resin was 27% by mass.

[0085] Example 3 A packaging laminate (substrate / adhesive layer / second substrate / vapor deposition layer / overcoat layer / adhesive layer / sealant layer) was produced in the same manner as in Example 1, except that the substrate was changed from a petroleum-derived biaxially oriented PET film (thickness 18 μm) to a petroleum-derived low-density polyethylene film (thickness 20 μm) and the second substrate was changed from an MR biaxially oriented PET film (thickness 18 μm) to a CR50%-OPP film (thickness 20 μm). Note that CR50%-OPP film refers to a biaxially oriented film containing 50% by mass of chemically recycled polypropylene and 50% by mass of petroleum-derived polypropylene. Then, rectangular laminates for the front surface and the back surface, each measuring 9 cm x 16 cm, and a rectangular laminate for the bottom surface, measuring 2.7 cm x 9 cm, were prepared from the above laminates for packaging material. On the other hand, a stopper was prepared in the same manner as in Example 1. The bottom laminate was folded in half and sandwiched between the lower ends of the top laminate and the back laminate, a stopper was sandwiched between the upper ends of the top laminate and the back laminate, and the peripheral edges of the top laminate and the back laminate were heat-sealed to obtain a packaging container with a stopper. In the resulting spouted packaging container, the proportion of recycled resin was 48% by mass, and in the recycled resin contained in the spouted packaging container, the proportion of the first recycled resin was 88% by mass and the proportion of the second recycled resin was 12% by mass.

[0086] Example 4 A packaging laminate (substrate / adhesive layer / second substrate / vapor deposition layer / overcoat layer / adhesive layer / sealant layer) was produced in the same manner as in Example 1, except that the substrate was changed from a petroleum-derived biaxially oriented PET film (thickness 18 μm) to a CR50% LDPE film (thickness 20 μm) and the second substrate was changed from an MR biaxially oriented PET film (thickness 18 μm) to a petroleum-derived biaxially oriented PET film (thickness 18 μm). Note that CR50%-LDPE film refers to a film containing 50% by mass of chemically recycled low-density polyethylene and 50% by mass of petroleum-derived low-density polyethylene. Then, rectangular laminates for the front surface and the back surface, each measuring 9 cm x 16 cm, and a rectangular laminate for the bottom surface, measuring 2.7 cm x 9 cm, were prepared from the above laminates for packaging material. On the other hand, a stopper was prepared in the same manner as in Example 1. The bottom laminate was folded in half and sandwiched between the lower ends of the top laminate and the back laminate, a stopper was sandwiched between the upper ends of the top laminate and the back laminate, and the peripheral edges of the top laminate and the back laminate were heat-sealed to obtain a packaging container with a stopper. In the resulting spouted packaging container, the proportion of recycled resin was 60% by mass, and in the recycled resin contained in the spouted packaging container, the proportion of the first recycled resin was 68% by mass and the proportion of the second recycled resin was 32% by mass.

[0087] Example 5 A laminate for packaging (substrate / adhesive layer / second substrate / vapor deposition layer / overcoat layer / adhesive layer / sealant layer) was produced in the same manner as in Example 1, except that the substrate was changed from a petroleum-derived biaxially oriented PET film (thickness 18 μm) to a CR50% LDPE film (thickness 20 μm). Then, rectangular laminates for the front surface and the back surface, each measuring 9 cm x 16 cm, and a rectangular laminate for the bottom surface, measuring 2.7 cm x 9 cm, were prepared from the above laminates for packaging material. On the other hand, a stopper was prepared in the same manner as in Example 1, except that the resin molding was changed from PCR Chemical R 100%-HDPE to PCR Chemical R 10%-HDPE. Note that PCR 10%-HDPE film refers to a film containing 10% by mass of PCR chemical recycled high-density polyethylene and 90% by mass of petroleum-derived high-density polyethylene. The bottom laminate was folded in half and sandwiched between the lower ends of the top laminate and the back laminate, a stopper was sandwiched between the upper ends of the top laminate and the back laminate, and the peripheral edges of the top laminate and the back laminate were heat-sealed to obtain a packaging container with a stopper. In the resulting spouted packaging container, the proportion of recycled resin was 61% by mass, and in the recycled resin contained in the spouted packaging container, the proportion of the first recycled resin was 67% by mass and the proportion of the second recycled resin was 33% by mass.

[0088] (Reference example 1) A laminate for packaging (substrate / adhesive layer / second substrate / vapor deposition layer / overcoat layer / adhesive layer / sealant layer) was produced in the same manner as in Example 1, except that the second substrate was changed from an MR biaxially oriented PET film (thickness 18 μm) to a petroleum-derived biaxially oriented PET film (thickness 18 μm). Then, rectangular laminates for the front surface and the back surface, each measuring 9 cm x 16 cm, and a rectangular laminate for the bottom surface, measuring 2.7 cm x 9 cm, were prepared from the above laminates for packaging material. On the other hand, a stopper was produced in the same manner as in Example 1, except that the PCR ChemiR 100%-HDPE was changed to petroleum-derived HDPE. The bottom laminate was folded in half and sandwiched between the lower ends of the top laminate and the back laminate, a stopper was sandwiched between the upper ends of the top laminate and the back laminate, and the peripheral edges of the top laminate and the back laminate were heat-sealed to obtain a packaging container with a stopper. In the resulting spouted packaging container, the proportion of recycled resin was 0% by mass, and in the recycled resin contained in the spouted packaging container, the proportion of the first recycled resin was 0% by mass and the proportion of the second recycled resin was 0% by mass.

[0089] <Evaluation> The laminates of the Examples and Reference Examples prepared as described above were evaluated for environmental load reduction and supplyability as follows.

[0090] (1) Environmental impact reduction The environmental impact reduction was evaluated based on the following criteria, and the results are shown in Table 2. (standard) ◎◎...The proportion of recycled resin in the packaging container with stopper is 20% by mass or more ◎...The proportion of recycled resin in the packaging container with stopper is 10% by mass or more but less than 20% by mass ○: The proportion of recycled resin in the packaging container with a stopper is greater than 0% by mass but less than 10% by mass ×: The proportion of recycled resin in the packaging container with a spout is 0% by mass (2) Supplyability The feedability was evaluated based on the following criteria, and the results are shown in Table 2. (standard) ◎…Even if we secure more than 10 million spouted packaging containers per year, it is expected that we can provide a stable supply. 〇…If we secure more than 1 million but less than 10 million spouted containers per year, it is expected that a stable supply will be possible. ×: If it is not possible to secure more than 1 million spouted packaging containers per year, it is expected that stable supply will be difficult.

[0091] [Table 1] [Table 2]

[0092] From the results shown in Table 2, the packaging containers with spouts of the examples had good environmental load reduction properties and were stable in supply.

[0093] From the above, it has been confirmed that the spout-equipped packaging container of the present disclosure enables stable supply while reducing the environmental burden. [Explanation of symbols]

[0094] 10...substrate, 20...second substrate, 30...sealant layer, 40...outer sealant layer, 50...printed layer, 60...gas barrier layer, 100...laminated body for packaging material, 300...packaging container, 310...stopper, 400...packaging container with stopper, 500...packaged product, C...contents.

Claims

1. A packaging container with a stopper, comprising: a packaging container obtained using a packaging laminate comprising at least a substrate and a sealant layer; and a stopper attached to the packaging container, the plug is made of a resin molded body containing a first recycled resin, the packaging laminate contains a second recycled resin, The first recycled resin and the second recycled resin are different in type from each other, A packaging container with a spout, wherein the proportion of recycled resin in the packaging container with a spout is 10% or more.

2. The packaging container with a spout according to claim 1 , wherein the first recycled resin includes a chemically recycled resin.

3. The packaging container with a spout according to claim 1 , wherein the first recycled resin includes a material recycled resin.

4. 2. The spout-equipped packaging container according to claim 1, wherein the second recycled resin comprises material-recycled polyethylene terephthalate.

5. The packaging container with a spout according to claim 1 , wherein the second recycled resin includes a chemically recycled resin.

6. The proportion of the first recycled resin in the recycled resin in the spout-equipped packaging container is 10 to 90%; 2. The spout-equipped packaging container according to claim 1, wherein the proportion of the second recycled resin is 90 to 10%.

7. 7. The packaging container with a spout according to claim 6, wherein, in the recycled resins contained in the packaging container with a spout, a ratio of the second recycled resin is smaller than a ratio of the first recycled resin.

8. The spouted packaging container according to claim 1 , wherein the packaging laminate further comprises a gas barrier layer between the substrate and the sealant layer.

9. A packaging container with a spout according to any one of claims 1 to 8, and a content contained in the packaging container with a spout.

Images