Packaging material for oral pouch, oral pouch manufactured using same, and manufacturing method of packaging material for oral pouch

Abstract

The present invention relates to a packaging material for an oral pouch, an oral pouch manufactured using same, and a manufacturing method of a packaging material for an oral pouch. One aspect of the present invention provides a packaging material for an oral pouch, the packaging material comprising: 0 to 40 wt% of a cellulose-based staple fiber; 20 to 80 wt% of a pulp fiber; 20 to 60 wt% of a thermoplastic resin fiber; and 0 to 5 wt% of a binder, and being manufactured by a wet method.

Description

Packaging material for oral pouches, oral pouches manufactured using the same, and method for manufacturing packaging material for oral pouches

[0001] The present invention relates to a packaging material for an oral pouch, an oral pouch manufactured using the same, and a method for manufacturing the same.

[0002] Pouch-type oral products, such as snus, are typically composed of an inner filling material and an outer packaging material for packaging. The outer packaging material is mainly nonwoven, which can be manufactured through web forming and web bonding processes. Known web forming methods for nonwovens include dry, wet, and spinning. Dry forming can be further subdivided into carding and airlay, wet forming can be further subdivided into the general paper manufacturing process, and spinning can be further subdivided into spunbond and meltblown. Web bonding methods include mechanical bonding methods such as needle punching and spunlacing, chemical bonding methods such as polymer dispersion and polymer solution, and thermal bonding methods such as calendering, hot air, and ultrasonic methods are also known.

[0003] The outer packaging material of an oral pouch must be soft enough for oral use. It must also possess excellent airtightness to prevent leakage of the filler within the pouch. It must also possess excellent porosity, which allows for rapid dissolution of the active ingredient by saliva. Furthermore, to prevent the pouch from bursting during oral use, the pouch packaging material must possess excellent tensile strength and elongation, as well as sufficient sealing strength.

[0004] The purpose of the present invention is to provide a packaging material having the necessary characteristics required for the material of a pouch for oral use as described above, and a method for manufacturing the same.

[0005] However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0006] One aspect of the present invention provides a packaging material for an oral pouch, which comprises 0 to 40 wt% of cellulosic staple fibers; 20 to 80 wt% of pulp fibers; 20 to 60 wt% of thermoplastic resin fibers; and 0 to 5 wt% of binder, and is manufactured by a wet process.

[0007] According to one embodiment, the cellulosic staple fiber may be a packaging material for an oral pouch, comprising at least one selected from the group consisting of viscose and lyocell.

[0008] According to one embodiment, the pulp fiber may be a packaging material for an oral pouch, comprising at least one of soft pulp and hard pulp.

[0009] According to one embodiment, the thermoplastic resin fiber may be a packaging material for an oral pouch, which comprises at least one selected from the group consisting of polypropylene (PP), polyethylene (PE), polyethylene (PE) / polypropylene (PP), polyethylene terephthalate (PET), low-melting point polyethylene terephthalate (LMPET), and polylactic acid (PLA).

[0010] According to one embodiment, the thermoplastic resin fiber may be a bicomponent fiber comprising two selected from the group consisting of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and polylactic acid (PLA), and the thermoplastic resin fiber may form a core-shell structure, which may be a packaging material for an oral pouch.

[0011] According to one embodiment, the binder may be a packaging material for an oral pouch, which includes at least one selected from the group consisting of an acrylic binder, polylactic acid (PLA), polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), vinyl acetate copolymer, vinyl acrylic copolymer, styrene-butadiene copolymer, and plant-derived natural materials.

[0012] According to one embodiment, the oral pouch packaging material may be characterized in that the tensile strength of the oral pouch packaging material is 0.4 N / mm to 2 N / mm, the elongation is 1% to 10%, the porosity is 10,000 CU (CORESTA Unit) to 70,000 CU, and the airtightness is 0 mg to 60 mg.

[0013] According to one embodiment, the oral pouch packaging material may have a basis weight of 10 to 50 g / m² and a thickness of 50 μm to 300 μm.

[0014] According to one embodiment, the cellulosic staple fiber is rayon and has a content of 15 to 25 wt%, the pulp fiber is soft pulp and has a content of 35 to 45 wt%, and the thermoplastic resin fiber is LMPET or PE / PP and has a content of 35 to 45 wt%. The packaging material may be an oral pouch.

[0015] Another aspect of the present invention provides an oral pouch comprising any one of the above oral pouch packaging materials.

[0016] Another aspect of the present invention provides a method for manufacturing a packaging material for an oral pouch, comprising: a step (S1) of refining pulp fibers; a step (S2) of mixing the refining pulp fibers with cellulose fibers and thermoplastic resin fibers to form a web; and a step (S3) of dehydrating and drying.

[0017] According to one embodiment, the manufacturing method may further comprise a step of adding a binder.

[0018] According to one embodiment, the addition of the binder may be applied by an external sizing method (size pressing) during the S3 step, or by a coating method after the S3 step.

[0019] According to one embodiment of the present invention, a packaging material for an oral pouch having excellent porosity, airtightness, tensile strength and elongation, and improved sealing strength can be provided through a combination of cellulose staple fibers, pulp fibers, and thermoplastic resin fibers.

[0020] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0021] FIG. 1 is a drawing schematically showing a method for manufacturing a packaging material for an oral pouch according to one embodiment of the present invention.

[0022] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, the embodiments may be modified in various ways, and the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are included within the scope of the patent application.

[0023]

[0024] The terms used in the examples are for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood to not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0025]

[0026] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments pertain. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0027]

[0028] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing embodiments, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

[0029]

[0030] One aspect of the present invention provides a packaging material for an oral pouch, which comprises 0 to 40 wt% of cellulosic staple fibers; 20 to 80 wt% of pulp fibers; 20 to 60 wt% of thermoplastic resin fibers; and 0 to 5 wt% of binder, and is manufactured by a wet process.

[0031] The above cellulose staple fiber is a hydrophilic material, soft, has excellent moisture absorption, and has low elasticity, so it is advantageous in terms of manufacturing workability.

[0032] Specific types of the above cellulose staple fibers may include at least one selected from the group consisting of viscose and lyocell, and preferably, the above cellulose staple fibers may be rayon.

[0033] The content of the above cellulose staple fiber may preferably be 10 wt% to 35 wt%, more preferably 15 wt% to 30 wt%, based on the total weight of the packaging material for the oral pouch.

[0034] When the content of the cellulose staple fiber is less than the lower limit, sufficient pores may not be formed in the oral pouch packaging material, and thus the moisture transport properties may deteriorate, which may lower the dissolution rate of the effective ingredient of the filler. When the content of the cellulose staple fiber exceeds the upper limit, the tensile strength of the oral pouch packaging material may decrease, which may lower the workability of manufacturing the pouch, or the filler may leak during pouch manufacturing or oral use.

[0035] The above pulp fibers are pulps made from coniferous and broadleaf trees for general paper manufacturing, and the strength of the material can be controlled by adjusting the level of refining during paper manufacturing along with the selection of these pulps.

[0036] Specific types of the pulp fibers may include at least one of soft pulp and hard pulp, and preferably, the pulp fibers may be soft pulp.

[0037] The above soft pulp is preferable in that it has a relatively long fiber length compared to hard pulp, has high tensile strength, has low opacity during paper production, and has good refining efficiency.

[0038]

[0039] The content of the pulp fiber may preferably be 30 wt% to 55 wt%, more preferably 35 wt% to 50 wt%, based on the total weight of the packaging material for the oral pouch.

[0040] When the content of pulp fiber is less than the lower limit, the tensile strength of the packaging material for the oral pouch may be reduced, and thus, the pouch may burst, and when the content of pulp fiber exceeds the upper limit, the porosity of the material may be reduced, and thus, the moisture transport characteristics may be reduced during use of the pouch.

[0041]

[0042] The thermoplastic resin fiber may be at least one selected from the group consisting of polypropylene (PP), polyethylene (PE), polyethylene (PE) / polypropylene (PP), polyethylene terephthalate (PET), low-melting point polyethylene terephthalate (LMPET), and polylactic acid (PLA).

[0043] Preferably, the thermoplastic resin fiber may be low-melting point polyethylene terephthalate (LMPET).

[0044] When low-melting point polyethylene terephthalate (LMPET) is used, the tensile strength and elongation of the packaging material for the oral pouch increase.

[0045] Alternatively, the thermoplastic resin fiber may be a bicomponent fiber comprising two selected from the group consisting of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and polylactic acid (PLA), and the thermoplastic resin fiber may form a core-shell structure. Such a core-shell structured fiber has the advantage of excellent physical properties and excellent sealing properties at low temperatures.

[0046] The content of the thermoplastic resin fiber may preferably be 25 wt% to 55 wt%, more preferably 30 wt% to 50 wt%, based on the total weight of the packaging material for the oral pouch.

[0047] If the thermoplastic resin fiber content is below the lower limit, the packaging material may not have sufficient sealing strength, which may result in leakage of the internal filler during use of the pouch, and the packaging itself may become impossible to manufacture. If the thermoplastic resin fiber content exceeds the upper limit, the adhesive strength of the packaging material may increase, but the material itself may become stiff, increasing the foreign body sensation in the oral cavity.

[0048]

[0049] The above binder may be at least one selected from the group consisting of acrylic binders, polylactic acid (PLA), polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), vinyl acetate copolymers, vinyl acrylic copolymers, styrene-butadiene copolymers, and plant-derived natural materials.

[0050] Preferably, the binder may be an acrylic binder.

[0051] Binders can be optionally applied to improve the strength and sealing strength of the material.

[0052] Preferably, the cellulose staple fiber is rayon and has a content of 15 to 25 wt%, the pulp fiber is soft pulp and has a content of 35 to 45 wt%, and the thermoplastic resin fiber is LMPET or PE / PP and has a content of 35 to 45 wt%. It may be a packaging material for an oral pouch.

[0053]

[0054] The tensile strength of the above oral pouch packaging material may be 0.4 N / mm to 2 N / mm, the elongation may be 1% to 10%, the porosity may be 10,000 CU (CORESTA Unit) to 70,000 CU, and the airtightness may be 0 mg to 60 mg.

[0055] Preferably, the porosity can be 30000CU to 70000CU.

[0056] Preferably, the confidentiality may be 10 mg to 60 mg.

[0057] If the tensile strength and elongation fall below the lower limits, the pouch may burst during oral use by the user. Furthermore, if the porosity falls below the lower limits, the moisture transport properties may deteriorate, potentially resulting in negative consequences such as suppression of the effective ingredient release by saliva. Furthermore, if the airtightness exceeds the upper limits, the filler within the pouch may leak out.

[0058]

[0059] The basis weight of the packaging material for the oral pouch may be 10 to 50 g / m², preferably 20 to 40 g / m².

[0060] The basis weight refers to the weight per area. If the basis weight of the packaging material exceeds the upper limit, the strength of the pouch increases, but the moisture transport characteristics may deteriorate. If it falls below the lower limit, the moisture transport characteristics may improve, but the strength of the pouch may deteriorate.

[0061] The thickness of the packaging material for an oral pouch according to one embodiment of the present invention may be 50 μm to 300 μm, preferably 50 to 150 μm.

[0062] If the thickness of the packaging material for the oral pouch falls below the numerical range described above, the strength of the oral pouch may be reduced, leading to the oral pouch being prone to bursting. Conversely, if the thickness of the packaging material for the oral pouch exceeds the numerical range described above, the strength of the oral pouch may increase, but its moisture transport properties may deteriorate.

[0063]

[0064] Another aspect of the present invention provides an oral pouch comprising any one of the above oral pouch packaging materials.

[0065]

[0066] Another aspect of the present invention provides a method for manufacturing a packaging material for an oral pouch, comprising: a step (S1) of refining pulp fibers; a step (S2) of mixing the refining pulp fibers with cellulose fibers and thermoplastic resin fibers to form a web; and a step (S3) of dehydrating and drying.

[0067] In the present invention, a wet-laid nonwoven fabric manufacturing method was utilized to manufacture pouch packaging materials. The wet-laid nonwoven fabric manufacturing method offers the advantage of excellent material airtightness even at thin thicknesses, making it advantageous for manufacturing low-weight pouch packaging materials.

[0068] The schematic sequence of the manufacturing method of the above oral pouch packaging material is as shown in Fig. 1, and although not separately shown in Fig. 1, the manufacturing method may further include a step of adding a binder.

[0069] The addition of the above binder may be applied by an external sizing method (size pressing) before the S3 step, or by a coating method after the S3 step.

[0070] External sizing method (size pressing) is a process of coating the surface during the manufacturing of packaging materials, and is used particularly for the purpose of imparting waterproofness to the packaging materials.

[0071]

[0072] Hereinafter, the present invention will be described in more detail through examples. The following examples are provided for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention.

[0073]

[0074] Example

[0075] <Manufacturing Example 1>

[0076] With reference to the fiber compositions of Examples 1 to 9 and Comparative Example 1 shown in Table 1 below, packaging materials for oral pouches were manufactured using a wet manufacturing method.

[0077] The basis weight of the nonwoven fabric was manufactured at 35 g / m².

[0078] Cellulosic staple fiberPulp fiberThermoplastic resin fiberBinderExample 1 - Soft pulp 40 parts by weightPE / PP 60 parts by weight-Example 2 - Soft pulp 60 parts by weightPE / PP 40 parts by weight-Example 3 - Soft pulp 80 parts by weightPE / PP 20 parts by weight-Example 4 - Soft pulp 60 parts by weightPP 40 parts by weight-Example 5 - Soft pulp 60 parts by weightLMPET 40 parts by weight-Example 6Rayon 20 parts by weightSoft pulp 40 parts by weightPE / PP 40 parts by weight-Example 7Rayon 40 parts by weightSoft pulp 20 parts by weightPE / PP 40 parts by weight-Example 8Rayon 30 parts by weightSoft pulp 30 parts by weightPE / PP 40 parts by weight-Example 9Rayon 30 parts by weight of soft pulp 30 parts by weight of PE / PP 40 parts by weight of acrylic binder 5 parts by weight Comparative example 1 - 100 parts by weight of soft pulp -

[0079]

[0080] <Manufacturing Example 2>

[0081] Referring to the fiber compositions of Examples 10 to 14 shown in Table 2 below, packaging materials for oral pouches were manufactured using a wet manufacturing method. The nonwoven fabric was manufactured using the same method as Manufacturing Example 1, except that the basis weight was manufactured at 25 g / m².

[0082] Cellulosic staple fiber, pulp fiber, thermoplastic resin, fiber, binder, Example 10, 20 wt% rayon, 40 wt% soft pulp, 40 wt% PE / PP, - Example 11, 20 wt% rayon, 40 wt% soft pulp, 40 wt% LMPET, - Example 12, 20 wt% rayon, 50 wt% soft pulp, 30 wt% PE / PP, - Example 13, 10 wt% rayon, 50 wt% soft pulp, 40 wt% PE / PP, - Example 14, 15 wt% rayon, 50 wt% soft pulp, 30 wt% PE / PP, 5 wt% acrylic binder

[0083]

[0084] <Test Example 1> Exploration of the ratio of thermoplastic resin fibers to secure the sealing properties of packaging materials.

[0085] In order to explore the optimal fiber composition for manufacturing packaging materials for oral pouches, the tensile strength, elongation, porosity, airtightness, and sealing strength of each packaging material manufactured in Manufacturing Examples 1 and 2 were measured.

[0086] Tensile strength and elongation were measured by cutting the manufactured packaging material into a size of 15 mm in width and 20 mm in length or larger using the EDANA NWEP 110.1.R10 measurement method.

[0087] The porosity was measured by cutting the manufactured packaging material into appropriate sizes and using the ISO 2965 measurement method.

[0088] The airtightness was evaluated by placing the manufactured packaging material between an upper circular sieve with a diameter of 21 cm, 10 mesh, and a sieve opening size of 2 mm and a lower circular sieve with a diameter of 21 cm, 12 mesh, and a sieve opening size of 1.7 mm, placing 40 g of granular filler (average particle size of 250 ㎛) on the upper circular sieve, shaking it at 240 rpm for 5 minutes, and measuring the weight of the filler remaining under the lower sieve.

[0089] The sealing strength was measured by cutting the manufactured packaging material into two pieces of at least 15 mm in width and 20 mm in length, sealing the transverse ends with a manual heat sealer at a width of 2 mm and 150°C for 2 seconds, and then applying the tensile strength evaluation method.

[0090] In order to explore the ratio of thermoplastic resin fibers to secure the sealing properties of packaging materials, the results for each physical property measured for the packaging materials of Examples 1 to 3 and Comparative Example 1 are shown in Table 3 below.

[0091] Physical properties Tensile strength (N / mm) Elongation (%) Porosity (CU) Density (mg) Sealing strength (N / mm) Example 10.174.050K or more555Not measurable Example 20.441.818764220.23 Example 31.182.36046110.04 Comparative example 11.992.4170720Not sealable

[0092]

[0093] Referring to Table 3, it can be seen that sealing properties can be secured only when thermoplastic resin fibers (PE / PP) are present at a content of at least 20 wt%. At content levels exceeding 60 wt%, the sealing strength exceeded the tensile strength of the material, making it impossible to measure the sealing strength.

[0094] Through this, it can be confirmed that sealing properties can be secured by appropriately adjusting the ratio of thermoplastic resin fibers according to the target tensile strength level of the packaging material.

[0095]

[0096] <Test Example 2> Evaluation of physical properties of packaging materials according to the type of thermoplastic resin fiber

[0097] In order to evaluate the physical properties of packaging materials according to the type of thermoplastic resin fiber, the physical property values ​​of the packaging materials of Examples 2, 4, and 5 were measured in the same manner as in Test Example 1.

[0098] Physical properties Tensile strength (N / mm) Elongation (%) Porosity (CU) Density (mg) Sealing strength (N / mm) Example 20.441.818764220.23 Example 40.491.921618130.34 Example 50.997.815862100.10

[0099] Referring to Table 4, the tensile strength, elongation, and porosity of packaging materials composed of PE / PP fibers and PP fibers are not significantly different. However, when LMPET fibers are used, tensile strength and elongation increase significantly. While sealing strength was measured to be relatively low when LMPET fibers were used, this can be controlled through appropriate ratio adjustment.

[0100]

[0101] <Test Example 3> Evaluation of physical properties of pouch packaging materials using rayon fibers

[0102] In order to evaluate the physical properties of packaging materials using cellulose staple fibers, the physical property values ​​of the packaging materials of Examples 2, 6, and 7 were measured in the same manner as in Test Example 1.

[0103] Physical properties Tensile strength (N / mm) Elongation (%) Porosity (CU) Density (mg) Sealing strength (N / mm) Example 20.441.818764220.23 Example 60.351.550K or more230.23 Example 70.140.750K or more450.09

[0104] Referring to Table 5, it can be seen that when cellulose staple fibers (rayon fibers) are used, porosity increases significantly. Airtightness is assessed to be at a similar level. However, when rayon fibers are added at 40 wt%, tensile strength and sealing strength decrease. Therefore, the ratio of rayon fibers should be appropriately adjusted, taking into account the target properties.

[0105]

[0106] <Test Example 4> Evaluation of physical properties of packaging materials according to the use of selective binders

[0107] In order to evaluate the physical properties of packaging materials manufactured using a binder, each physical property value was measured for the packaging materials of Examples 8 and 9 using the same method as in Test Example 1.

[0108] Physical properties Tensile strength (N / mm) Elongation (%) Porosity (CU) Density (mg) Sealing strength (N / mm) Example 80.201.1342157120.25 Example 91.004.1633744150.33

[0109] Referring to Table 6, it can be seen that for packaging materials using an acrylic binder, the tensile strength, elongation, and sealing strength all increased.

[0110]

[0111] <Test Example 5> Physical properties according to packaging material composition

[0112] In summary of the results of the above Test Example 1, it can be interpreted that the cellulose staple fibers provide porosity to the material, the pulp fibers improve tensile strength, and the thermoplastic resin fibers provide sealing properties.

[0113] In Manufacturing Example 2, a packaging material for an oral pouch was manufactured by appropriately adjusting the fiber mixing ratio, taking into account the above-mentioned characteristics. In Test Example 5, in order to evaluate the physical properties of the packaging material for an oral pouch manufactured in Manufacturing Example 2, each physical property value was measured using the same method as Test Example 1.

[0114] Physical properties Tensile strength (N / mm) Elongation (%) Porosity (CU) Density (mg) Sealing strength (N / mm) Example 100.161.148061150.15 Example 110.452.243687390.22 Example 120.261.238033240.08 Example 130.211.639597260.15 Example 140.271.339405180.11

[0115] Referring to Table 7, it can be confirmed that Example 11, which used 20 wt% rayon as a cellulosic staple fiber, 40 wt% soft pulp as a pulp fiber, and 40 wt% LMPET fiber as a thermoplastic resin fiber, exhibited high tensile strength, elongation, and sealing strength, and also had excellent porosity.

[0116]

[0117] Although the embodiments described above have been described with limited drawings, those skilled in the art will appreciate that various technical modifications and variations can be applied based on the above. For example, appropriate results can still be achieved even if the described techniques are performed in a different order than described, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different manner than described, or are replaced or substituted with other components or equivalents.

[0118] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims described below.

Claims

1. 0 wt% to 40 wt% cellulose staple fibers; 20% to 80% by weight of pulp fibers; 20% to 60% by weight of thermoplastic resin fibers; and Containing 0 wt% to 5 wt% of a binder, Manufactured by wet process, Packaging material for oral pouches.

2. In paragraph 1, The above cellulose staple fiber comprises at least one selected from the group consisting of viscose and lyocell. Packaging material for oral pouches.

3. In paragraph 1, The above pulp fibers include at least one of soft pulp and hard pulp. Packaging material for oral pouches.

4. In paragraph 1, The thermoplastic resin fiber comprises at least one selected from the group consisting of polypropylene (PP), polyethylene (PE), polyethylene (PE) / polypropylene (PP), polyethylene terephthalate (PET), low-melting point polyethylene terephthalate (LMPET), and polylactic acid (PLA). Packaging material for oral pouches.

5. In paragraph 1, The above thermoplastic resin fiber is a bicomponent fiber comprising two selected from the group consisting of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and polylactic acid (PLA). The above thermoplastic resin fiber forms a core-shell structure, Packaging material for oral pouches.

6. In paragraph 1, The binder comprises at least one selected from the group consisting of acrylic binders, polylactic acid (PLA), polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), vinyl acetate copolymers, vinyl acrylic copolymers, styrene-butadiene copolymers, and plant-derived natural materials. Packaging material for oral pouches.

7. In paragraph 1, Packaging material for the above oral pouch Tensile strength is 0.4 N / mm to 2 N / mm, The rate of change is 1% to 10%, The air permeability is 10,000 CU to 70,000 CU. The confidentiality is characterized by being 0 mg to 60 mg, Packaging material for oral pouches.

8. In paragraph 1, The weight of the packaging material for the above oral pouch is 10 to 50 g / m², With a thickness of 50 μm to 300 μm, Packaging material for oral pouches.

9. In paragraph 1, The above cellulose staple fiber is rayon, and its content is 15 to 25 wt%, The above pulp fiber is soft pulp, and its content is 35 to 45 wt%, The thermoplastic resin fiber is LMPET or PE / PP, and its content is 35 to 45 wt%. Packaging material for oral pouches.

10. An oral pouch comprising a packaging material for an oral pouch according to any one of claims 1 to 9.

11. Step of refining pulp fibers (S1); A step (S2) of forming a web by mixing purified pulp fibers, cellulose fibers, and thermoplastic resin fibers; including a dehydrating and drying step (S3); A method for manufacturing a packaging material for an oral pouch as described in Article 1.

12. In paragraph 11, further comprising the step of adding a binder, Method for manufacturing packaging material for oral pouch.

13. In paragraph 12, The addition of the above binder is applied by an external sizing method (size pressing) during the S3 step, or It is applied as a coating method after the S3 stage. Method for manufacturing packaging material for oral pouch.

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