A double-cavity spliced composite film bag

Abstract

The application relates to the field of packaging materials, and provides a double-cavity spliced composite film bag, which comprises a surface PET film, a PA printing film, an intermediate aluminum foil layer and a transparent barrier layer which are compounded and then heat-sealed along the periphery to form a double-cavity base material, a heat-sealing line is arranged at a middle fold line of the double-cavity base material along the length direction, light-proof areas and transparent display areas are respectively formed on the two sides of the heat-sealing line, and a tearable opening is arranged between the light-proof areas and the transparent display areas. The application has the effect of realizing dry-wet separation.

Description

Technical Field

[0001] This application relates to the field of packaging materials, and in particular to a double-cavity spliced ​​composite film bag. Background Technology

[0002] In the packaging industry, as the variety of products increases, the demand for packaging also becomes more diversified, and facial mask packaging bags are one such example.

[0003] With the diversification of facial mask types, some masks require dry and wet separation packaging, such as microcurrent masks. In the past, dry and wet separation packaging technology usually used the same material to construct the dry and wet cavities. Currently, dry and wet separation packaging on the market has some defects. Because both the dry and wet cavities are made of the same material, it is impossible to meet the packaging requirements where the two cavities are made of different materials. This is especially true for products with dual cavities where one side of the ingredients needs to be protected from light and the other side needs to be transparent for display. Existing technology cannot meet these requirements and cannot provide more suitable packaging protection and display functions for the products. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a composite film bag with dual-cavity splicing.

[0005] The technical solution for a double-cavity spliced ​​composite film bag provided in this application is as follows: A double-cavity spliced ​​composite film bag includes a double-cavity substrate formed by laminating a surface PET film, a PA printed film, an intermediate aluminum foil layer, and a transparent barrier layer, and then heat-sealing it along the perimeter with a heat-sealing layer. A heat-sealing line is provided at the middle fold of the double-cavity substrate folded along its length. A light-shielding area and a transparent display area are formed on both sides of the heat-sealing line, and an easy-tear opening is provided between the light-shielding area and the transparent display area.

[0006] By adopting the above technical solution, the light-proof area and the transparent display area can be separated into dry and wet areas simultaneously. That is, the mask does not need to be immersed in chemical liquid and is stored in a dry state, which can extend the shelf life. The chemical liquid is located in the light-proof area, and blocking the light can also extend the shelf life of the chemical liquid. This structure enables the film bag to achieve dry and wet separation and meet the needs of light-proof and transparent display.

[0007] Optionally, the PA printing film surface is printed with a positioning pattern, and the two sides of the positioning pattern correspond to the release agent area.

[0008] By adopting the above technical solution, the release area is positioned using the positioning pattern. If the application of the release agent deviates from the release area of ​​the PA printing film, the application of the release agent will affect the subsequent heat sealing and curing processes.

[0009] Optionally, the surface PET film is laminated with the PA printed film to form a surface composite film, and a window die-cut is performed on the surface composite film at the release agent area using a window-opening process.

[0010] By adopting the above technical solution, a window is opened in the release area corresponding to the surface composite film using die cutting. The surface composite film can be torn open by opening the window.

[0011] Optionally, a pull ring is formed at the window die-cutting point, and the pull ring is made into a window film.

[0012] By adopting the above technical solution, the window film made of pull rings can provide a pull fulcrum for tearing, improving the ease of use.

[0013] Optionally, the intermediate aluminum foil layer and the PRT film layer are spliced ​​together along the width direction, and the total width of the aluminum foil layer and the PRT film layer is consistent with the width of a single layer of the transparent barrier layer.

[0014] By adopting the above technical solution, the PET film is set on both sides of the middle aluminum foil layer along the width direction to form a spliced ​​composite film, which provides effective heat sealing conditions and is consistent with the width of the transparent barrier layer, making the overall film bag more beautiful.

[0015] Optionally, the heat-sealing layer is a continuous thin film layer covering the lower surface of the dual-cavity substrate, and the edge of the heat-sealing layer is provided with a heat-sealing border.

[0016] By adopting the above technical solution, a continuous thin film layer is used to provide heat sealing, and a heat sealing frame can be set to form a sealed area for the dual-cavity substrate, ensuring the sealing performance and stability of the film bag.

[0017] Optionally, the heat-sealing line between the intermediate aluminum foil layer and the transparent barrier layer is wavy.

[0018] By adopting the above technical solution, the wavy heat-sealing line makes it easier to control when tearing the film bag, avoiding excessive tearing that could cause items to spill out.

[0019] Optionally, tear-off openings are provided on both sides of the intermediate aluminum foil layer.

[0020] By adopting the above technical solution, the light-shielding area can be opened not only through the easy-tear opening but also through the tear-out opening, thus improving the tolerance for errors in use.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The light-proof area and the transparent display area achieve dry and wet separation simultaneously. That is, the mask does not need to be immersed in chemical liquid and is stored in a dry state, which can extend the shelf life. The chemical liquid is located in the light-proof area. Blocking the light can also extend the shelf life of the chemical liquid. This structure allows the film bag to achieve dry and wet separation and meet the needs of light-proof and transparent display. 2. The release area is positioned using the positioning pattern. If the release agent is applied incorrectly, it will affect the subsequent heat sealing and curing processes. 3. A window is made in the release area corresponding to the surface composite film using die cutting. The surface composite film can be torn open through the window. 4. The ring-shaped window film provides a pull-out fulcrum for tearing, improving ease of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first planar structure of the composite film bag in one embodiment of this application; Figure 2 This is a schematic diagram of the layered structure of the composite film bag in some embodiments of this application; Figure 3 This is a schematic diagram of a second planar structure of the composite film bag in some embodiments of this application; The labels in the attached diagram are as follows: 1. Dual-cavity substrate, 11. Surface PET film, 12. PA printed film, 13. Intermediate aluminum foil layer, 14. Transparent barrier layer, 15. INK film, 16. Release agent, 17. PET film layer, 2. Heat-sealing layer, 3. Light-shielding area, 4. Transparent display area, 5. Heat-sealing line, 6. Release area, 61. Window film, 7. Tear opening. Detailed Implementation

[0023] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0025] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0026] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0029] This application discloses a composite film bag with a double cavity splicing.

[0030] A composite membrane bag with dual cavities, the present application conforms to the application of the membrane bag in the production of face masks, such as microcurrent face masks.

[0031] refer to Figure 1 and Figure 2 As shown, a double-cavity substrate 1 is formed by laminating a surface PET film, a PA printed film 12, an intermediate aluminum foil layer 13, and a transparent barrier layer 14, and then heat-sealing it along its perimeter through a heat-sealing layer 2. A heat-sealing line 5 is provided at the middle fold where the double-cavity substrate 1 is folded along its length. A light-shielding area 3 and a transparent display area 4 are formed on both sides of the heat-sealing line 5, respectively. The light-shielding area 3 is one cavity, and the transparent display area 4 is another cavity, thus forming a double-cavity structure. An easy-tear opening is provided between the light-shielding area 3 and the transparent display area 4. The light-shielding area 3 and the transparent display area 4 can be opened through the easy-tear opening, so that the products inside, such as face masks, can be taken out.

[0032] The light-proof area 3 and the transparent display area 4 have different functions. For example, the chemical liquid in the light-proof area 3 needs to be stored away from light, while the display area stores the face mask and does not need to be protected from light. At the same time, the transparent display area 4 can also display its own structure and style to the outside.

[0033] The light-proof zone 3 and the transparent display zone 4 achieve dry and wet separation simultaneously. This means that the mask does not need to be immersed in the chemical liquid and is stored in a dry state, which can extend the shelf life. The chemical liquid is located in the light-proof zone 3, and blocking the light can also extend the shelf life of the chemical liquid. This structure enables the film bag to achieve dry and wet separation and meet the needs of light protection and transparent display.

[0034] When you need to use the mask, tear open the transparent display area 4 and the light-proof area 3 through the easy-tear opening, take the mask out from the transparent display area 4, and place the mask in the torn light-proof area 3 so that the chemical liquid in the light-proof area 3 can immerse the mask. Then take out the mask and apply it to your face to complete the use.

[0035] The outer PET film provides protection for the internal structure and enhances the strength of the bag. The PA printing film 12 is used to print product information, such as production date, chemical composition, shelf life, trademark, and product name. The middle aluminum foil layer 13 can be made of AL film to provide light protection. The transparent barrier film can be made of GLPET transparent high barrier film.

[0036] Among them, the PA printing film 12 has an INK film 15 laminated on its surface. The INK film 15 is a liquid material similar to ink and is mainly used for encapsulation.

[0037] Furthermore, the PA printing film 12 is divided into two sides. One side is printed with a positioning pattern, and the two sides of the positioning pattern correspond to the release agent 16 area. The other side of the PA printing film 12 is coated with release agent 16. The positioning pattern is used to position the release area 6. If the application of release agent 16 is deviated, applying release agent 16 off the release area 6 of the PA printing film 12 will affect the subsequent heat sealing and curing process.

[0038] Release agent 16 can be made of organosilicon or fluorinated silicone, depending on the manufacturer's requirements, and is not limited here.

[0039] Furthermore, refer to Figure 2 As shown, the surface PET film is laminated with the PA printed film 12. A curing process is performed during the lamination process. Suitable adhesives, such as polyurethane adhesives, can be used during the lamination process. Other adhesives can also be used as needed, and there is no limitation here. The curing process involves controlling the temperature and time to cause chemical reactions or material changes in the surface PET film, PA printed film 12, and adhesive materials, so that the two are laminated together to achieve stable performance and form a surface composite film.

[0040] The release agent 16 area is die-cut on the surface composite film by means of a windowing process, which also means that the release agent 16 area matches the windowing position of the transparent display area 4.

[0041] Windows are made at six release areas corresponding to the surface composite film using die cutting. These windows allow for tearing, making it easy to open the surface composite film.

[0042] Among them, reference Figure 3 As shown, a pull ring is formed at the window die-cutting point, and the pull ring is made into a window film 61. The window film 61 is one of the easy-tear openings. By tearing the pull ring-shaped window film 61, the surface composite film is torn open to open the transparent display area 4, and the mask can be taken out.

[0043] The pull tab-made window film 61 provides a tear-off fulcrum, improving ease of use.

[0044] In some embodiments, reference Figure 2 As shown, the middle aluminum foil layer 13 is spliced ​​and laminated with another PET film layer 17 on both sides along the width direction to form a spliced ​​composite film. The total width of the middle aluminum foil layer 13 and the PET film layer 17 is consistent with the single-layer width of the transparent barrier layer 14, so that the overall film bag has a complete and beautiful appearance.

[0045] The purpose of setting PET film on both sides of the middle aluminum foil layer 13 along the width direction to form a spliced ​​composite film is to enable heat sealing with the heat sealing layer 2 using the PET film layer 17. The middle aluminum foil layer 13, being made of metal aluminum foil, cannot form effective heat sealing conditions. Therefore, it is first laminated with PRT film and then heat sealed.

[0046] Furthermore, the heat-sealing layer 2 is a continuous thin film layer (PE film) covering the lower surface of the dual-cavity substrate 1. The heat-sealing layer 2 has a heat-sealing frame at its edge. The heat-sealing layer 2 can be made of polyethylene material, and the thickness can be determined according to the requirements, such as 0.03-0.05mm. Utilizing the good heat-sealing performance of polyethylene material, it can melt quickly during heating and seal with other materials.

[0047] The heat-sealed border is a sealed area formed during the heat-sealing process, which ensures the sealing and stability of the film bag.

[0048] The heat-sealing layer 2 can also be a two-layer structure, divided into two sections. The two sections correspond to the light-shielding area 3 and the transparent display area 4, respectively, and the two sections are broken at the heat-sealing line 5. This allows for more flexible heat-sealing according to the needs of different areas, improving the performance of the film bag.

[0049] Furthermore, refer to Figure 1 or Figure 3As shown, the heat seal line 5 between the intermediate aluminum foil layer 13 and the transparent barrier layer 14 is wavy. The wavy pattern is a continuous undulating wave shape. The wavy heat seal line 5 makes it easier to control when tearing the film bag, avoiding excessive tearing that could cause the items to spill out.

[0050] The wavy heat-sealing line 5 is formed on the film bag through the heat-sealing process. It is used in conjunction with a wavy heat-sealing mold. The shape and size of the heat-sealing mold determine the shape and size of the wavy line. It can be used according to requirements and is not limited here.

[0051] Among them, the wavy heat seal line 5 can provide the light-proof area 3 for tearing. It is one of the easy-tear openings, just like the window film 61. The window film 61 makes it easy to open the transparent display area 4, while the wavy heat seal line 5 makes it easy to open the light-proof area 3.

[0052] Further, refer to Figure 1 or Figure 3 As shown, tear-off openings 7 are provided on both sides of the middle aluminum foil layer 13. In order to ensure the stability of tearing conditions, if the light-shielding area is opened through the easy-tear opening at the corrugated heat-sealing line 5, the corrugated heat-sealing line 5 will break due to excessive force, making it impossible to open the light-shielding area 3. Therefore, tear-off openings 7 are provided at the middle aluminum foil layer 13 corresponding to the light-shielding area 3. The tear-off openings 7 allow the light-shielding area 3 to be opened not only through the easy-tear opening but also through the tear-off openings 7, thus improving the fault tolerance rate.

[0053] Among them, the tear-off opening 7 can also be classified as an easy-tear opening.

[0054] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-cavity spliced ​​composite film bag, characterized in that, A double-cavity substrate (1) is formed by heat-sealing the outer PET film, PA printed film (12), middle aluminum foil layer (13) and transparent barrier layer (14) together with a heat-sealing layer (2) along the perimeter. A heat-sealing line (5) is provided at the middle fold of the double-cavity substrate (1) folded along the length direction. A light-shielding area (3) and a transparent display area (4) are formed on both sides of the heat-sealing line (5). An easy-tear opening is provided between the light-shielding area (3) and the transparent display area (4).

2. The composite film bag with double cavities spliced ​​according to claim 1, characterized in that, The PA printing film (12) has a positioning pattern printed on its surface, and the two sides of the positioning pattern correspond to the release agent (16) area.

3. The composite film bag with double cavities spliced ​​according to claim 2, characterized in that, The surface PET film is combined with the PA printing film (12) to form a surface composite film. The surface composite film is then die-cut at the release agent (16) area by a window-opening process.

4. The composite film bag with double cavities spliced ​​according to claim 3, characterized in that, A pull ring is formed at the window die-cutting point, and the pull ring is made into a window film (61).

5. A double-cavity spliced ​​composite film bag according to claim 1, characterized in that, The intermediate aluminum foil layer (13) and the PRT film layer are spliced ​​together along the width direction, and the total width of the aluminum foil layer and the PRT film layer is consistent with the single-layer width of the transparent barrier layer (14).

6. The composite film bag with double cavities spliced ​​according to claim 1, characterized in that, The heat-sealing layer (2) is a continuous thin film layer covering the lower surface of the dual-cavity substrate (1), and the edge of the heat-sealing layer (2) is provided with a heat-sealing border.

7. The composite film bag with double cavities spliced ​​according to claim 1, characterized in that, The heat-sealing line (5) between the intermediate aluminum foil layer (13) and the transparent barrier layer (14) is wavy.

8. The double-cavity spliced ​​composite film bag according to claim 1, characterized in that, The intermediate aluminum foil layer (13) has tear-out openings (7) on both sides.

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