Multipurpose sealing gasket

Abstract

The utility model relates to the technical field of packaging, in particular to a multipurpose sealing gasket which comprises a sealing layer, an aluminum foil layer and a paperboard layer which are fixedly connected in sequence in the vertical upward direction. In the horizontal direction, the sealing layer comprises a plurality of first sealing strips and second sealing strips, the first sealing strips and the second sealing strips are alternately arranged, the first sealing strips and the second sealing strips are connected in a sealing and abutting mode, and the first sealing strips and the second sealing strips are used for being fixedly bonded to the bottle opening area; the first sealing strip and the second sealing strip are made of any one of a PE heat sealing film, a CPP heat sealing film and a PET heat sealing film, and the first sealing strip and the second sealing strip are made of different materials. According to the packaging bottle, the sealing layer is formed by processing the heat sealing films made of the two different materials, and the sealing layer and the bottle bodies made of the two different materials have good adhesion; therefore, the application range of the sealing gasket is widened, the change of a sealing gasket production line is reduced, and the production efficiency of the sealing gasket is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the packaging technology field, and in particular relates to a multipurpose sealing gasket. BACKGROUND

[0002] In the production process of bottled products (medicines or food), a sealing gasket (also referred to as a sealing pad) needs to be arranged at the bottle mouth area of the bottle body after the product is filled into the bottle body, so as to prevent gas or moisture from entering or escaping from the bottle body.

[0003] In the prior art, the sealing gasket is a composite three-layer structure, and the sealing gasket comprises, in sequence, a sealing layer, an aluminum foil layer and an elastic paperboard layer. The working principle of the sealing gasket is as follows: the aluminum foil layer generates heat under the action of electromagnetic waves and transmits the heat to the heat sealing layer; the sealing layer is a heat sealing film made of various materials, and the sealing layer has heat sealing property; the sealing layer is fused under the heating action of the aluminum foil layer, and the sealing layer is bonded and fixed to the bottle mouth area of the bottle body after the sealing layer is cooled.

[0004] The heat sealing property of plastic refers to the heat bonding property of plastic after being heated to a molten state. Therefore, in order to ensure the bonding strength of the sealing layer to the bottle body and ensure the sealing property of the sealing gasket to the bottle mouth, the material used for the sealing layer needs to correspond to the material of the bottle. The PE heat sealing film is mainly used for bottles made of PE material, the CPP heat sealing film is mainly used for bottles made of PP material, and the PET heat sealing film is mainly used for bottles made of CPP material.

[0005] However, when the number of bottles is large and the delivery cycle of the bottles is short, in order to shorten the construction period, the bottles are usually simultaneously produced by multiple manufacturers. However, due to the different materials and quantities of bottles produced by different manufacturers, different sealing layer materials need to be replaced and the production line needs to be reformed when corresponding sealing gaskets are produced, thereby affecting the production of the sealing gasket and the production efficiency of the sealing gasket. CONTENT OF THE INVENTION

[0006] In order to reduce the change of the sealing gasket production line and improve the production efficiency of the sealing gasket, the application provides a multipurpose sealing gasket.

[0007] The application provides a multipurpose sealing gasket, which adopts the following technical scheme:

[0008] A multi-purpose sealing gasket is arranged between a bottle body and a bottle cap, and is used to seal the bottle mouth of the bottle body; in a vertical upward direction, the sealing gasket comprises, in sequence, a sealing layer, an aluminum foil layer and a paperboard layer; in a horizontal direction, the sealing layer comprises a plurality of first sealing strips and second sealing strips, the first sealing strips and the second sealing strips are arranged alternately, the first sealing strips and the second sealing strips are sealed and abutted, and the first sealing strips and the second sealing strips are used to be bonded and fixed with the bottle mouth area; the material of the first sealing strips is any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, the material of the second sealing strips is any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, and the materials of the first sealing strips and the second sealing strips are different.

[0009] By adopting the above technical scheme, the sealing layer is processed from two kinds of heat-seal films with different materials, and the sealing layer has good adhesion with the bottle body with two kinds of different materials; thereby the use range of the sealing gasket is improved, the production line of the sealing gasket is changed, and the production efficiency of the sealing gasket is improved.

[0010] Optionally, the adjacent first sealing strips and second sealing strips are lap-fixed.

[0011] By adopting the above technical scheme, the first sealing strips and the second sealing strips are lap-fixed, thereby the sealing property between the first sealing strips and the second sealing strips is improved, that is, the sealing property of the whole sealing layer is improved.

[0012] Optionally, the lap width of the first sealing strips and the second sealing strips is not less than 0.5 mm.

[0013] By adopting the above technical scheme, the lap width of the first sealing strips and the second sealing strips is not less than 0.5 mm, so as to ensure the connection strength of the first sealing strips and the second sealing strips and the sealing property after connection.

[0014] Optionally, the paperboard layer is provided with a breakable line, two ends of the breakable line extend to the outer edge of the paperboard layer, and the paperboard layer is broken along the breakable line.

[0015] By adopting the above technical scheme, the breakable line is arranged on the paperboard layer, so that when the user opens the bottle cap, the user can easily break the sealing gasket, so as to facilitate the user to take the product in the bottle.

[0016] Optionally, the breakable line is an arc line, and the opening direction of the breakable line is arranged towards the outer edge of the paperboard layer, and the arc shape of the breakable line is used to be matched with the shape of the human finger.

[0017] By adopting the above technical scheme, the arc shape of the breakable line is used to be matched with the shape of the human finger, so as to facilitate the user to press and break the sealing gasket.

[0018] Optionally, the virtual connecting line at the two ends of the breakable line is arranged in parallel with the length direction of the first sealing strip.

[0019] By adopting the above technical scheme, the virtual connecting line at the two ends of the breakable line is arranged in parallel with the length direction of the first sealing strip; thus, when the user squeezes the paperboard layer, the user can easily squeeze and break the sealing layer, so as to facilitate the staff to break the sealing gasket.

[0020] Optionally, the sealing gasket further comprises a secondary sealing element, the secondary sealing element is arranged on the side of the paperboard layer away from the bottle body; along the direction away from the bottle body, the secondary sealing element comprises a barrier layer and a thickened gasket layer, and the barrier layer is adhesively fixed with the thickened gasket layer.

[0021] By adopting the above technical scheme, when the staff removes the sealing layer, the aluminum foil layer and the paperboard layer, the user can place the secondary sealing element between the bottle cap and the bottle body, and use the secondary sealing element to seal the bottle mouth of the bottle body. The barrier layer is made of a material with high barrier property, and the second barrier layer can have an additional barrier effect, preventing gas, moisture and the like from entering or escaping from the bottle, and playing a role of secondary leakage prevention.

[0022] Optionally, the sealing layer further comprises a third sealing strip, the first sealing strip, the second sealing strip and the third sealing strip are arranged in sequence; the third sealing strip is made of any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, and the materials of the first sealing strip, the second sealing strip and the third sealing strip are all different.

[0023] By adopting the above technical scheme, the sealing layer is processed by using heat-seal strips of different materials, so that the sealing gasket can be adhesively fixed with bottles of three different materials, so as to further improve the use range of the sealing gasket.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. The sealing layer is processed by using heat-seal films of two different materials, and the sealing layer has good adhesion with bottles of two different materials; thus, the use range of the sealing gasket is improved, the production line of the sealing gasket is changed, and the production efficiency of the sealing gasket is improved;

[0026] 2. By arranging the breakable line on the paperboard layer, when the user opens the bottle cap, the user can easily break the sealing gasket, so as to easily take out the product in the bottle;

[0027] 3. After the staff removes the sealing layer, the aluminum foil layer and the paperboard layer, the user can place the secondary sealing piece between the bottle cap and the bottle body, and use the secondary sealing piece to seal the bottle mouth of the bottle body. The barrier layer is made of a material with high barrier performance, and the second barrier layer can provide additional barrier effect to prevent gas, moisture and other substances from entering or escaping from the bottle, thereby achieving the effect of secondary leakage prevention. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the installation position of the sealing gasket in embodiment 1.

[0029] Figure 2 is a schematic diagram of the structure of the sealing gasket in embodiment 1.

[0030] Figure 3 is an exploded view of the structure of the sealing gasket in embodiment 1.

[0031] Figure 4 is a schematic diagram of the structure of the sealing gasket in embodiment 2.

[0032] Figure 5 is a schematic diagram of the structure of the sealing gasket in embodiment 3.

[0033] Figure 6 is a schematic diagram of the structure of the sealing gasket in embodiment 4.

[0034] Figure 7 is an exploded view of the structure of the sealing gasket in embodiment 4.

[0035] Figure 8 is a schematic diagram of the working of the sealing gasket in embodiment 4.

[0036] Reference signs: 1, sealing layer; 11, first sealing strip; 12, second sealing strip; 13, third sealing strip; 2, aluminum foil layer; 3, paperboard layer; 31, frangible line; 32, circular groove; 4, secondary sealing piece; 41, barrier layer; 42, thickened gasket layer; 5, bottle cap; 6, bottle body. DETAILED DESCRIPTION

[0037] The application will be further described in detail below with reference to the accompanying drawings 1-8. Figure 1

[0038] The embodiments of the application disclose a multipurpose sealing gasket. Referring to Figure 1 , the sealing gasket is arranged between the bottle body 6 and the bottle cap 5, and is used to seal the bottle mouth of the bottle body 6. Referring to Figure 1 and Figure 2 , in the vertical upward direction, the multipurpose sealing gasket comprises a sealing layer 1, an aluminum foil layer 2 and a paperboard layer 3 which are fixedly connected in sequence.

[0039] ​The paperboard layer 3 is composed of multiple layers of paperboard and has a certain thickness and elasticity, so that when the bottle cap 5 is fixedly connected with the bottle body 6, the paperboard layer 3 forces the sealing layer 1 to tightly abut against the bottle body 6. The staff uses the electromagnetic induction sealing machine to generate an electromagnetic field at the bottle cap 5; the aluminum foil layer 2 is made of aluminum foil material and will heat up under the action of the electromagnetic field; and the heat is transmitted to the sealing layer 1. The sealing layer 1 is a plastic film and has heat sealing property, and after the sealing layer 1 is heated and melted, the sealing layer 1 will be bonded and fixed with the bottle body 6 after cooling. Thus, the sealing gasket is sealed at the bottle opening of the bottle body 6. The sealing of the sealing gasket by the electromagnetic induction sealing machine is the prior art, and the working principle of the sealing gasket will not be described further in this embodiment.

[0040] In the prior art, plastic bottles are mainly made of PP material, PE material and PET material. Correspondingly, the sealing layer 1 is a heat sealing film, and the plastic heat sealing film has heat sealing property; according to different materials, the heat sealing film can be divided into PE heat sealing film, CPP heat sealing film and PET heat sealing film.

[0041] The heat sealing property of plastic refers to the heat bonding property of plastic itself or other types of plastic after being heated to a molten state. The bonding strength of the heat sealing film to the plastic bottle of the same material is the strongest, and the bonding strength of the heat sealing film to the plastic bottle of other materials is weaker; therefore, the PE heat sealing film is mainly used for PE material bottles, the CPP heat sealing film is mainly used for PP material bottles, and the PET heat sealing film is mainly used for PET material bottles.

[0042] However, when the number of bottles is large and the delivery cycle of the bottles is short; in order to shorten the construction period, multiple manufacturers will usually produce bottles at the same time. However, due to the different materials and quantities of bottles from different manufacturers, different sealing layer 1 materials need to be replaced and the production line needs to be modified when making corresponding sealing gaskets; thereby affecting the processing of the sealing gasket and affecting the production efficiency of the sealing gasket. Therefore, the sealing gasket is improved in this embodiment to reduce the changes of the sealing gasket production line and improve the production efficiency of the sealing gasket.

[0043] Referring to Figure 2 and Figure 3 , in the horizontal direction, the sealing layer 1 includes a plurality of first sealing strips 11 and second sealing strips 12, the first sealing strips 11 and the second sealing strips 12 are arranged alternately, the first sealing strips 11 and the second sealing strips 12 abut and seal each other, and the first sealing strips 11 and the second sealing strips 12 are used to be bonded and fixed with the bottle opening area; the material of the first sealing strip 11 is any one of PE heat sealing film, CPP heat sealing film and PET heat sealing film, the material of the second sealing strip 12 is any one of PE heat sealing film, CPP heat sealing film and PET heat sealing film, and the materials of the first sealing strip 11 and the second sealing strip 12 are different.

[0044] Referring toFigure 2 And Figure 3 It can be understood that the first sealing strip 11 and the second sealing strip 12 have the following arrangements. The first kind: the material of the first sealing strip 11 is PE heat-seal film, and the material of the second sealing strip 12 is CPP heat-seal film; the sealing gasket can be used in PE bottles and PP bottles at the same time. The second kind: the material of the first sealing strip 11 is PE heat-seal film, and the material of the second sealing strip 12 is PET heat-seal film; the sealing gasket can be used in PE bottles and PET bottles at the same time. The third kind: the material of the first sealing strip 11 is CPP heat-seal film, and the material of the second sealing strip 12 is PET heat-seal film; the sealing gasket can be used in PP bottles and PET bottles at the same time.

[0045] Referring to Figure 2 And Figure 3 Taking the first kind as an example, the working principle of the sealing gasket is explained. The material of the first sealing strip 11 is PE heat-seal film, and the material of the second sealing strip 12 is CPP heat-seal film; the sealing gasket can be used in PE bottles and PP bottles at the same time. When the sealing gasket is applied to a PE bottle, the first sealing strip 11 has strong adhesion strength with the bottle body 6, and the second sealing strip 12 has strong adhesion strength with the bottle body 6; and the first sealing strip 11 and the second sealing strip 12 are alternately adhered and fixed with the bottle body 6, so that the sealing layer 1 has strong adhesion strength with the bottle body 6 as a whole, to ensure the sealing performance of the sealing gasket on the bottle mouth.

[0046] Referring to Figure 2 And Figure 3 In this embodiment, the adjacent first sealing strip 11 and the second sealing strip 12 are overlapped and fixed, and the first sealing strip 11 and the second sealing strip 12 are adhered and fixed; thereby improving the sealing performance of the connection between the first sealing strip 11 and the second sealing strip 12, i.e., improving the integrity of the sealing layer 1. At the same time, the overlap width of the first sealing strip 11 and the second sealing strip 12 is not less than 0.5 mm; to ensure the connection strength of the first sealing strip 11 and the second sealing strip 12, and the sealing performance after connection.

[0047] The implementation principle of the multi-purpose sealing gasket in the embodiment of the application is as follows:

[0048] Referring to Figure 2 And Figure 3 The sealing layer 1 is processed by using two kinds of heat-seal films with different materials, and the sealing layer 1 has good adhesion with the two kinds of bottle bodies 6 with different materials; so that the sealing gasket has good adhesion with the two kinds of bottles with different materials, and the same sealing gasket can be used in the two kinds of bottles. That is, by changing the sealing film, the use range of the sealing gasket is improved, the production line of the sealing gasket is changed, and the production efficiency of the sealing gasket is improved.

[0049] Embodiment 2

[0050] The difference between this embodiment 2 and embodiment 1 is that:

[0051] Referring to Figure 4 , the sealing layer 1 further comprises a third sealing strip 13, and the first sealing strip 11, the second sealing strip 12 and the third sealing strip 13 are sequentially arranged; the material of the third sealing strip 13 is any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, and the materials of the first sealing strip 11, the second sealing strip 12 and the third sealing strip 13 are all different.

[0052] It can be understood that the material of the first sealing strip 11 is PE heat-seal film, the material of the second sealing strip 12 is CPP heat-seal film, and the material of the third sealing strip 13 is PET heat-seal film.

[0053] The implementation principle of the multi-purpose sealing gasket according to an embodiment of the present application is that:

[0054] The sealing layer 1 is processed by using heat-seal strips of different materials, so that the sealing gasket can be bonded and fixed to bottles of three different materials, thereby further improving the application range of the sealing gasket.

[0055] Embodiment 3

[0056] The difference between this embodiment 3 and embodiment 1 is that:

[0057] Referring to Figure 5 , the sealing gasket further comprises a secondary sealing member 4, and the secondary sealing member 4 is arranged on the side of the paperboard layer 3 away from the bottle body 6; along the direction away from the bottle body 6, the secondary sealing member 4 comprises a barrier layer 41 and a thickened gasket layer 42, and the barrier layer 41 and the thickened gasket layer 42 are bonded and fixed. The barrier layer 41 is composed of a material with high barrier property, such as polyester (PET), EVOH (ethylene-vinyl alcohol copolymer), PET (polyethylene terephthalate) or other plastic film. The thickened gasket layer 42 can be composed of multiple layers of paperboard or be a sheet with elasticity such as a PS foamed gasket.

[0058] The implementation principle of the multi-purpose sealing gasket according to an embodiment of the present application is that:

[0059] Referring to Figure 5 , after the sealing layer 1, the aluminum foil layer 2 and the paperboard layer 3 are removed by the staff, the user can place the secondary sealing member 4 between the bottle cap 5 and the bottle body 6, and use the secondary sealing member 4 to seal the bottle mouth of the bottle body 6. The barrier layer 41 is made of a material with high barrier property, and the second barrier layer 41 can have an additional barrier effect, preventing gas, moisture and the like from entering or escaping from the bottle, thereby playing a role of secondary leakage prevention.

[0060] Embodiment 4

[0061] The difference between this embodiment 4 and embodiment 1 is that:

[0062] With reference to Figure 6 and Figure 7 , the paperboard layer 3 is provided with a breakable line 31, both ends of the breakable line 31 extend to the outer edge of the paperboard layer 3, and the paperboard layer 3 is broken along the breakable line 31. In this embodiment, a plurality of circular grooves 32 are punched on the paperboard layer 3, and the plurality of circular grooves 32 are connected to form the breakable line 31; thus, a structural weak line is formed on the paperboard layer 3 to facilitate the user to squeeze and break the sealing gasket.

[0063] With reference to Figure 6 and Figure 7 , in this embodiment, the breakable line 31 is an arc-shaped line, the opening direction of the breakable line 31 is arranged towards the outer edge of the paperboard layer 3, and the arc shape of the breakable line 31 is adapted to the shape of the human finger. At the same time, the virtual connecting line at both ends of the breakable line 31 is arranged in parallel with the length direction of the first sealing strip 11.

[0064] The implementation principle of the multi-purpose sealing gasket according to the embodiment of the present application is as follows:

[0065] With reference to Figure 6 and Figure 8 , by arranging the breakable line 31 on the paperboard layer 3, when the user opens the bottle cap 5, it is convenient for the user to break the sealing gasket, so as to facilitate the user to take out the product in the bottle. The arc shape of the breakable line 31 is adapted to the shape of the human finger, so as to facilitate the user to press and break the sealing gasket.

[0066] With reference to Figure 6 and Figure 7 , the virtual connecting line at both ends of the breakable line 31 is arranged in parallel with the length direction of the first sealing strip 11; thus, when the user squeezes the paperboard layer 3, it is convenient for the user to squeeze and break the sealing strip 1, so as to facilitate the worker to break the sealing gasket.

[0067] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A multi-purpose sealing gasket, which is arranged between a bottle body (6) and a bottle cap (5) and is used to seal the mouth of the bottle body (6); characterized in that: Along the vertical upward direction, the sealing gasket comprises the sealing layer (1), the aluminum foil layer (2) and the paperboard layer (3) which are fixedly connected in sequence; along the horizontal direction, the sealing layer (1) comprises a plurality of first sealing strips (11) and second sealing strips (12), the first sealing strips (11) and the second sealing strips (12) are arranged alternately, the first sealing strips (11) and the second sealing strips (12) are sealed and abutted, and the first sealing strips (11) and the second sealing strips (12) are used for being bonded and fixed with the bottle mouth area; the material of the first sealing strips (11) is any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, the material of the second sealing strips (12) is any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, and the materials of the first sealing strips (11) and the second sealing strips (12) are different.

2. The multi-purpose sealing gasket of claim 1, wherein: The first sealing strips (11) and the second sealing strips (12) are lap-fixed.

3. The multi-purpose sealing gasket of claim 2, wherein: The lap width of the first sealing strips (11) and the second sealing strips (12) is not less than 0.5 mm.

4. The multi-purpose gasket of claim 1, wherein: The paperboard layer (3) is provided with a breakable line (31), both ends of the breakable line (31) extend to the outer edge of the paperboard layer (3), and the paperboard layer (3) is broken along the breakable line (31).

5. The multi-purpose sealing gasket of claim 4, wherein: The breakable line (31) is an arc line, the opening direction of the breakable line (31) is arranged towards the outer edge of the paperboard layer (3), and the arc shape of the breakable line (31) is adapted to the shape of a human finger.

6. The multi-purpose sealing gasket of claim 5, wherein: The virtual connection line at both ends of the breakable line (31) is arranged in parallel with the length direction of the first sealing strips (11).

7. The multi-purpose sealing gasket of claim 1, wherein: The sealing gasket further comprises a secondary sealing member (4), the secondary sealing member (4) is arranged on the side of the paperboard layer (3) away from the bottle body (6), along the direction away from the bottle body (6), the secondary sealing member (4) comprises a barrier layer (41) and a thickened gasket layer (42), and the barrier layer (41) and the thickened gasket layer (42) are bonded and fixed.

8. The multi-purpose sealing gasket of claim 1, wherein: The sealing layer (1) further comprises a third sealing strip (13), the first sealing strip (11), the second sealing strip (12) and the third sealing strip (13) are arranged in sequence; the material of the third sealing strip (13) is any one of PE heat-seal film, CPP heat-seal film and PET heat-seal film, and the materials of the first sealing strip (11), the second sealing strip (12) and the third sealing strip (13) are all different.

Images