Packaging method of nicotine bag and nicotine bag manufactured by using same
By using packaging materials made of pulp and thermoplastic resin fibers, combined with lateral and longitudinal sealing, the leakage problem of nicotine bags during transportation and use was solved, the foreign body sensation was reduced, and efficient sealing was achieved.
Patent Information
- Application Number
- CN202480035337.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-08-31
- Filing Date
- 2024-07-04
- Publication Date
- 2026-01-06
AI Technical Summary
Existing nicotine bags are prone to powder leakage during transportation and use, and users may experience a foreign body sensation when using them.
Packaging materials made of pulp and thermoplastic resin fibers are sealed using transverse and longitudinal sealing methods, with a sealing width of 2mm to 5mm and a sealing temperature range of 110℃ to 160℃, and using an overlapping sealing method.
It effectively prevents powder leakage, reduces the feeling of foreign objects during use, and ensures sealing strength and flexibility.
Smart Images
Figure CN121285508A_ABST
Abstract
Description
Technical Field
[0001] Packaging methods for nicotine bags and nicotine bags manufactured using these methods. Background Technology
[0002] A nicotine pouch is a smoking accessory that consists of an inner filling material and an outer packaging material. It is placed inside the user's mouth to deliver nicotine into the body. Typically, users use it by placing the nicotine pouch between their upper or lower gums and lips for a period of time.
[0003] Therefore, nicotine bags need to have a certain degree of rigidity and flexibility to minimize the foreign body sensation experienced by users during use; at the same time, the sealing part needs to have sufficient strength to prevent leakage of the internal filling material during the production, transportation and use of the nicotine bag.
[0004] Generally, nicotine bags are made of non-woven fabric and are usually sealed using heat sealing or ultrasonic sealing equipment. They are packaged in three-sided or back-sealed packaging (i.e., common powder packaging methods) to pack a certain amount of nicotine powder in the bag.
[0005] When using heat sealing equipment, packaging materials including thermoplastic fibers or adhesives are typically used, and the sealing is performed at a temperature of 100 to 300°C.
[0006] However, depending on the width and method of sealing, the powder inside the nicotine pouch may leak during transportation and consumer use after it is packaged, and may cause a foreign body sensation in the mouth due to the sealing.
[0007] Therefore, there is a need for a nicotine bag packaging method that uses appropriate sealing width and sealing method to ensure sufficient sealing strength while preventing the feeling of a foreign body in the mouth. Summary of the Invention
[0008] The problem the invention aims to solve The purpose of this invention is to provide a method for packaging nicotine pouches that can prevent the internal filler from leaking through the sealing part during the manufacturing, transportation and use of the nicotine pouches, and prevent the user from feeling a foreign object in their mouth.
[0009] However, the technical problems to be solved by the embodiments are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art through the following description.
[0010] means for solving problems According to one aspect of the present invention, a packaging method is provided for a nicotine bag having a transverse and longitudinal seal forming a packaging material, wherein the packaging material comprises pulp and thermoplastic resin fibers, the width of the transverse and longitudinal seals is 2 mm to 5 mm, and the sealing temperature range for forming the transverse and longitudinal seals is 110°C to 160°C.
[0011] According to one embodiment, the pulp may include soft pulp, and the thermoplastic resin fiber may include PP / PE fiber.
[0012] According to one embodiment, the packaging material may include 50 to 80% by weight of soft pulp and 20 to 50% by weight of PP / PE.
[0013] According to one embodiment, the packaging material may include 55 to 65% by weight of soft pulp and 35 to 45% by weight of PP / PE.
[0014] According to one embodiment, the transverse seal can be achieved by an overlapping seal.
[0015] According to one embodiment, the width of the transverse seal and the longitudinal seal can be 2 mm to 3 mm, and the sealing temperature for forming the transverse seal and the longitudinal seal can be 140°C to 160°C.
[0016] According to one embodiment, the width of the transverse seal and the longitudinal seal can be 5 mm, and the sealing temperature for forming the transverse seal and the longitudinal seal can be 110°C to 130°C.
[0017] According to one embodiment, the sealing strength of the transverse seal and the longitudinal seal can be above 0.2 N / mm.
[0018] According to another aspect of the invention, a nicotine bag manufactured using the aforementioned packaging method is provided.
[0019] Invention Effects The method of packaging nicotine bags according to the present invention can prevent powder leakage during the manufacture, transportation and use of nicotine bags by adjusting the width and temperature of the seal, and can minimize the foreign body sensation that users may feel when using nicotine bags due to the seal.
[0020] However, the effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description
[0021] Figure 1 This is a schematic diagram illustrating the packaging method of nicotine pouches.
[0022] Figure 2The transverse and longitudinal seals of the nicotine bag are shown.
[0023] Figure 3 The comparison results of seal shape and seal strength of lap seal and fin seal are shown. Detailed Implementation
[0024] The embodiments will now be described in detail with reference to the accompanying drawings. It should be understood that various modifications can be made to the embodiments, and the scope of this application is not limited to the embodiments described below. All modifications to the embodiments, their equivalents, and even their substitutes are within the scope of this invention.
[0025] The terminology used in the embodiments is for illustrative purposes only and is not intended to limit the scope. Unless otherwise specified in the content, a single form of expression includes the meanings of multiple forms. In this specification, terms such as "comprising" or "having" are used to express the presence of the features, numbers, steps, operations, constituent elements, accessories, or combinations thereof described in the specification, but do not exclude the possibility of the presence or additional addition of one or more other features, numbers, steps, operations, constituent elements, accessories, or combinations thereof.
[0026] Unless otherwise defined, all terms used herein, including technical or scientific terms, shall have the ordinary meaning as understood by one of ordinary skill in the art to which the embodiments pertain. Terms commonly used, such as those defined in dictionaries, shall be understood as having the meaning in the relevant technical content and shall not be interpreted as idealized or overly formalized meanings unless explicitly defined in this specification.
[0027] In describing the examples with reference to the accompanying drawings, the same reference numerals are used for the same parts, and repeated descriptions are omitted. In describing the example embodiments, when it is determined that a detailed description of a well-known structure or function would unnecessarily obscure this disclosure, such detailed description will be omitted.
[0028] According to one embodiment of the present invention, a method for packaging nicotine pouches by forming a lateral seal and a cross seal using packaging material can be provided. The packaging material may include pulp and thermoplastic resin fibers. The width of the lateral and cross seals may be 2 mm to 5 mm, and the sealing temperature for forming the lateral and cross seals may be 110°C to 160°C.
[0029] When the width of the lateral and longitudinal seals exceeds the ranges mentioned above, users may experience a foreign body sensation when using the nicotine pouch in their mouths; when the width is too small, the seal strength may be reduced, and the internal filler may leak.
[0030] In addition, when the sealing temperature exceeds the above range, surface hardening and discoloration may occur; when the sealing temperature is below the above range, the internal filler may leak because sufficient sealing strength cannot be ensured.
[0031] Because the sealing area varies depending on the bag's sealing width, the sealing temperature required to ensure a proper seal also varies, potentially leading to different phenomena. Specifically, as the sealing width decreases, the foreign body sensation experienced by the user when using the nicotine bag may be minimized; however, there is a risk of seal breakage due to insufficient seal strength. Conversely, as the sealing temperature increases, the seal strength may improve; however, the seal quality may decrease due to surface hardening and discoloration. Therefore, optimization of both the sealing width and the sealing temperature based on that width is necessary.
[0032] Therefore, preferably, the width of the transverse seal and the longitudinal seal can be 2 mm to 3 mm, and the sealing temperature range for forming the transverse seal and the longitudinal seal can be 140°C to 160°C.
[0033] Furthermore, preferably, the width of the transverse seal and the longitudinal seal can be 5 mm, and the sealing temperature range for forming the transverse seal and the longitudinal seal can be 110°C to 130°C.
[0034] When the sealing width is 2mm to 3mm, if the sealing temperature is below the lower limit mentioned above, the internal filler may leak from the sealing part because sufficient sealing strength cannot be ensured; if the sealing temperature exceeds the upper limit mentioned above, there may be a risk of surface hardening and discoloration.
[0035] Conversely, when the seal width is 5 mm, the area of the seal may increase compared to examples with a seal width of 2 mm to 3 mm. Therefore, even when sealing at relatively low temperatures, sufficient seal strength for bag manufacturing can be achieved.
[0036] According to one embodiment, the pulp may include one or more of the group consisting of soft pulp, viscose fiber, lyocell fiber, ramie fiber, flax fiber, and bamboo fiber. Preferably, the pulp may include soft pulp.
[0037] According to one embodiment, the thermoplastic resin fiber may include one or more of the group consisting of polypropylene / polyethylene (PP / PE), polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET). Preferably, the thermoplastic resin fiber may include PP / PE.
[0038] As mentioned above, when soft pulp is used as the pulp and PP / PE is used as the thermoplastic resin fiber, nonwoven fabric that meets the physical specifications of nicotine bag packaging materials can be manufactured by wet-laid process.
[0039] According to one embodiment, the packaging material may include 50 to 80% by weight of soft pulp and 20 to 50% by weight of PP / PE, preferably, it may include 55 to 65% by weight of soft pulp and 35 to 45% by weight of PP / PE, and more preferably, it may include 60% by weight of soft pulp and 40% by weight of PP / PE.
[0040] When the PP / PE content is below the lower limit, the nicotine bag may break due to insufficient sealing strength; when the PP / PE content exceeds the upper limit, the web structure of the packaging material may not be formed properly and may not meet the physical properties required for packaging, such as elongation or tensile strength. Therefore, the packaging material may not be suitable for use as a packaging material for nicotine bags.
[0041] According to one embodiment, the transverse seal can be achieved using a lap seal method.
[0042] The lateral seal, which comes into direct contact with the inner lip and gums, is the most important factor determining the degree of foreign body sensation experienced by consumers when using the product. Lateral seals can be achieved using either a lap seal or a fin seal.
[0043] like Figure 3 As shown, the overlap seal method refers to a sealing method where the inner surface of one end of the packaging material contacts the outer surface of the other end, while the fin seal method refers to a sealing method where the inner surfaces of both ends of the packaging material contact each other. In terms of usability and sealing strength, the overlap seal method is superior to the fin seal method.
[0044] Reference Figure 3 It can be confirmed that, under the same sealing width and sealing temperature, the lap seal method has a higher sealing strength than the fin seal method.
[0045] According to one embodiment, the sealing strength of the transverse seal and the longitudinal seal can be above 0.2 N / mm.
[0046] To prevent leakage of the internal filler through the seal during bag manufacturing, transportation and use, the seal may require sufficient sealing strength, at least 0.2 N / mm.
[0047] According to another aspect of the present invention, a nicotine bag manufactured using any of the above-described packaging methods is provided.
[0048] A nicotine pouch is a smoking product that typically includes an inner filling material and an outer packaging material. The inner filling material may include nicotine, pH adjusters, adhesives, flavorings, etc., and according to one embodiment, a nicotine pouch can be manufactured by packaging the aforementioned inner filling material.
[0049] The present invention will now be described in more detail with reference to embodiments. These embodiments are for illustrative purposes only, but the scope of the invention is not limited thereto.
[0050] <Experimental Example 1> Determining the optimal sealing temperature for a 2 mm sealing width To determine the optimal sealing temperature for different sealing widths, a heat sealing device was used to adjust the sealing width to 2 mm and the sealing temperature to 120℃, 150℃, 180℃ and 210℃ respectively. The packaging material was then sealed, and the seal strength was measured to determine whether surface hardening or discoloration occurred.
[0051] The sealing strength was measured under CRM No. 90 test conditions, and the average value of 10 samples was taken. Relevant information for the nonwoven fabric samples used is shown in Table 1 below.
[0052] [Table 1]
[0053] The measured sealing strength and information on whether the surface has changed are shown in Table 2 below.
[0054] [Table 2]
[0055] Referring to Table 2, it can be confirmed that when the sealing width is 2 mm, sufficient sealing strength can be achieved at temperatures above 150°C, but surface hardening or discoloration will occur at temperatures above 180°C.
[0056] <Experimental Example 2> Determining the optimal sealing temperature for a 3mm sealing width To determine the optimal sealing temperature for different sealing widths, the sealing strength was measured in the same manner as in Experimental Example 1, except that the sealing width was 3 mm, and it was determined whether surface hardening or discoloration occurred.
[0057] The measured sealing strength and information on whether the surface has changed are shown in Table 3 below.
[0058] [Table 3]
[0059] Referring to Table 3, it can be confirmed that, similar to the case with a 2 mm sealing width, sufficient sealing strength can be obtained at temperatures above 150°C. However, in Experimental Example 2, surface hardening and discoloration also occurred at temperatures above 180°C.
[0060] <Experimental Example 3> Determining the optimal sealing temperature for a 5mm sealing width To determine the optimal sealing temperature for different sealing widths, the sealing strength was measured in the same manner as in Experimental Example 1, except that the sealing width was 5 mm, and it was determined whether surface hardening or discoloration occurred.
[0061] [Table 4]
[0062] Referring to Table 4, it can be confirmed that when the sealing width is 5 mm, sufficient sealing strength can be obtained even at 120℃; however, when the temperature reaches above 180℃, surface hardening and discoloration will occur.
[0063] According to the results of Experiments 1 to 3, when the sealing width is 2 to 3 mm, 150°C is the optimal sealing temperature. At this temperature, sufficient sealing strength can be obtained while preventing surface hardening or discoloration. When the sealing width is 5 mm, 120°C is the optimal sealing temperature. At this temperature, sufficient sealing strength can be obtained while preventing surface hardening or discoloration.
[0064] In summary, the embodiments have been described with reference to the limited accompanying drawings. Those skilled in the art can make various modifications and variations based on the description. For example, appropriate results can be obtained by performing the described techniques in a different order than the described methods, and / or by combining or integrating the described constituent elements in a different manner than the described methods, or by replacing or substituting them with other constituent elements or equivalents.
[0065] Therefore, other embodiments, other implementations, and equivalents of the invention application should also be included within the scope of protection of the appended claims.
Claims
1.A packaging method of forming a transversely and longitudinally sealed nicotine pouch of a packaging material, characterized in that, the packaging material comprises pulp and thermoplastic resin fibers, a width of the transversely and longitudinally sealed is 2 to 5 mm, a sealing temperature range for forming the transversely and longitudinally sealed is 110 to 160℃. 2.The packaging method of the nicotine pouch according to claim 1, characterized in that, the pulp comprises soft pulp, the thermoplastic resin fibers comprise PP / PE fibers. 3.The packaging method of the nicotine pouch according to claim 1, characterized in that, the packaging material comprises 50 to 80 wt% of soft pulp and 20 to 50 wt% of PP / PE. 4.The packaging method of the nicotine pouch according to claim 1, characterized in that, the packaging material comprises 55 to 65 wt% of soft pulp and 35 to 45 wt% of PP / PE. 5.The packaging method of the nicotine pouch according to claim 1, characterized in that, the transversely sealed is sealed in a lap seal manner. 6.The packaging method of the nicotine pouch according to claim 1, characterized in that, a width of the transversely and longitudinally sealed is 2 to 3 mm, a sealing temperature for forming the transversely and longitudinally sealed is 140 to 160℃. 7.The packaging method of the nicotine pouch according to claim 1, characterized in that, a width of the transversely and longitudinally sealed is 5 mm, a sealing temperature for forming the transversely and longitudinally sealed is 110 to 130℃. 8.The packaging method of the nicotine pouch according to claim 1, characterized in that, a sealing strength of the transversely and longitudinally sealed is 0.2 N / mm or more. 9.A nicotine pouch manufactured by the packaging method according to any one of claims 1 to 8.