Simplified butterfly ear foamed sealing piece and sealing bottle

Abstract

The utility model discloses a simple type butterfly pull ear foamed sealing piece, including lower layer and butterfly pull ear, butterfly pull ear includes top film layer, first PET layer, second PET layer and bottom PET layer, first PET layer is folded to form first PET folding layer, second PET layer is folded to form second PET folding layer, and first PET folding layer, second PET folding layer are all between top film layer and bottom PET layer, and the closed end of first PET folding layer and second PET folding layer corresponds contact, and the opening of first PET folding layer, second PET folding layer all sets up outward, and the upper surface and lower surface of first PET folding layer opening are in the non -adhesion state, and the upper surface and lower surface of second PET folding layer opening are in the non -adhesion state, the upper surface of first PET folding layer, the upper surface of second PET folding layer all are attached on the lower surface of top film layer, and the lower surface of first PET folding layer, the lower surface of second PET folding layer all are attached on the upper surface of bottom PET layer, and the lower surface of bottom PET layer is attached on the upper surface of lower layer.

Description

Technical Field

[0001] This utility model relates to the field of foam sealing technology, and in particular to a simplified butterfly pull foam sealing sheet and sealing bottle. Background Technology

[0002] Current packaging containers include plastic, paper, aluminum, and glass containers. These containers have an opening at the top, with a sealing edge around the opening. A sealing gasket is heat-sealed along this edge to ensure a tight seal. To open the sealing gasket, one needs to use a fingernail or a tool to pry it open from the aluminum foil seal, which is neither hygienic nor convenient. Furthermore, after tearing the sealing gasket from the container's edge, it's difficult to create a clean, uncluttered opening. Powder or liquid inside the container can easily scatter and spill when poured out, and residue can remain at the opening, creating a breeding ground for bacteria. Utility Model Content

[0003] The problem to be solved by this utility model is to provide a simplified butterfly pull foam sealing sheet and sealing bottle, which makes it easy to open the butterfly pull and create a neat opening.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A simplified butterfly-shaped pull tab foam sealing sheet, characterized in that: it includes a lower layer and the butterfly pull tab, the butterfly pull tab including a top film layer, a first PET layer, a second PET layer and a bottom PET layer, the first PET layer is folded in half to form a first PET folded layer, the second PET layer is folded in half to form a second PET folded layer, the first PET folded layer and the second PET folded layer are both located between the top film layer and the bottom PET layer, and the fold lines of the first PET folded layer and the second PET folded layer correspond to each other, the openings of the first PET folded layer and the second PET folded layer are both outward, the upper surface and the lower surface of the opening of the first PET folded layer are not in contact with each other, the upper surface and the lower surface of the opening of the second PET folded layer are not in contact with each other; the upper surfaces of the first PET folded layer and the second PET folded layer are both in contact with the lower surface of the top film layer, the lower surfaces of the first PET folded layer and the second PET folded layer are both in contact with the upper surface of the bottom PET layer, and the lower surface of the bottom PET layer is in contact with the upper surface of the lower layer.

[0005] The openings of the first and second PET folded layers are both outward and their upper and lower surfaces are not attached. When the upper part of the first and second PET folded layers is lifted and closed, it forms a butterfly-shaped pull tab. Users can easily lift the layers by pinching the two ends of the butterfly pull tab without using fingernails or tools, thus avoiding bacterial contamination.

[0006] The butterfly pull tab is made of a multi-layer structure consisting of a top film layer, a double-folded PET layer, and a bottom PET layer. This structure gives the butterfly pull tab good stiffness and high tensile strength. It is also less likely to break at the base when tearing, and it can be easily operated by the elderly, children, or when their hands are wet.

[0007] The lower surface of the aforementioned lower layer adheres to the mouth of the sealed bottle. When tearing this simplified butterfly pull foam sealing sheet, the user pinches the upper half of the butterfly pull with two fingers and pulls the entire sealing sheet upwards. The lower layer of the sealing sheet tears along the mouth of the sealed bottle, creating a clean and smooth opening at the bottle's mouth.

[0008] In a preferred embodiment, the upper surface of the first PET folded layer is bonded to the lower surface of the top film layer, the upper surface of the second PET folded layer is bonded to the lower surface of the top film layer, the lower surface of the first PET folded layer is bonded to the upper surface of the bottom PET layer, the lower surface of the second PET folded layer is bonded to the upper surface of the bottom PET layer, and the lower surface of the bottom PET layer is bonded to the upper surface of the lower layer using adhesive layers. These adhesive layers can be hot melt adhesives or similar materials.

[0009] In a preferred embodiment, a first glossy film is adhered to both the upper and lower surfaces of the opening of the first PET folded layer, and the melting point of the first glossy film is greater than that of the first PET folded layer. Similarly, a second glossy film is adhered to both the upper and lower surfaces of the opening of the second PET folded layer, and the melting point of the second glossy film is greater than that of the second PET folded layer. The melting point of the glossy film needs to be greater than that of the PET material. When the other PET layers are heat-sealed, the melting point of the glossy film has not yet been reached, preventing the upper and lower surface glossy films of the two PET folded layer openings from being heat-sealed. Consequently, the upper and lower surfaces of both the first and second PET folded layer openings are not adhered to each other.

[0010] In a further preferred embodiment, both the first and second optical films are nano-titanium oxide films or polyetheretherketone (PEEK) films. The titanium oxide (TiO2) has a melting point of approximately 1175°C and is used for high-refractive-index coatings. The polyetheretherketone (PEEK) film has a melting point of approximately 343°C.

[0011] In a preferred embodiment, the top film layer is a PET film, PP film, or PE film. The PET film is characterized by high transparency, non-toxicity, odorlessness, high tensile strength, good stiffness, and good adhesion. When used at room temperature, it produces straight edges and leaves no residue, effectively protecting the lower surface of the aluminum foil layer. The PP or PE film also boasts high transparency, protecting the lower surface of the aluminum foil layer from contamination, corrosion, and scratches during transportation, storage, and use, preserving its original smoothness and gloss.

[0012] In a preferred embodiment, the lower layer comprises a functional film layer, an aluminum foil layer, and a foam layer, which are sequentially bonded from bottom to top, with the lower surface of the bottom PET layer bonded to the upper surface of the foam layer. The lower surface of the aluminum foil layer is bonded to the upper surface of the functional film layer, the lower surface of the foam layer is bonded to the upper surface of the aluminum foil layer, and the lower surface of the bottom PET layer is bonded to the upper surface of the foam layer.

[0013] In a further preferred embodiment, the lower surface of the aluminum foil layer and the upper surface of the functional film layer, the lower surface of the foam layer and the upper surface of the aluminum foil layer, and the lower surface of the bottom PET layer and the upper surface of the foam layer are all bonded together by an adhesive layer. The adhesive layer can be a hot melt adhesive, etc.

[0014] In a further preferred embodiment, the lower layer is provided with an annular easy-tear line, which runs from top to bottom through the foam layer, aluminum foil layer, and functional film layer. The butterfly pull is located inside the annular easy-tear line. This annular easy-tear line defines a fixed opening area for the sealing sheet, preventing irregular tearing during opening and ensuring a neat opening boundary. Furthermore, the lower layer outside the annular easy-tear line remains bonded to the bottle opening, preventing the entire sealing sheet from detaching upon opening and preventing external moisture and impurities from entering the bottle (the unopened area remains sealed).

[0015] In a further preferred embodiment, the outer edge of the bottom PET layer of the butterfly pull is adjacent to the annular easy-tear line. This arrangement shortens the distance between the butterfly pull and the annular easy-tear line, allowing the pulling force to be directly transmitted to the annular easy-tear line, ensuring that the annular easy-tear line breaks completely in one go.

[0016] In a further preferred embodiment, the functional film layer is a heat-sealable film or an easy-tear film. The heat-sealable film can be made of PE, PP, or EVA. The easy-tear film can be made of PE, PP, or PET. When using the film, a suitable functional film layer can be selected based on the container material.

[0017] This utility model also provides a sealed bottle with the above-mentioned simplified butterfly pull foam sealing sheet, characterized in that: the simplified butterfly pull foam sealing sheet is attached to the bottle mouth of the sealed bottle.

[0018] Compared with the prior art, this utility model has the following advantages: This invention uses a butterfly pull tab to open a neatly shaped opening, eliminating the need for other tools and making it both hygienic and convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a specific embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the structure of the sealing bottle according to a specific embodiment of this utility model; Figure 3 This is a structural schematic diagram of a specific embodiment 2 of the present utility model. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1, such as Figure 1 As shown, the simplified butterfly pull-ear foam sealing sheet in this embodiment includes a lower layer 1 and a butterfly pull 2. The butterfly pull 2 ​​includes a top film layer 21, a first PET layer 22, a second PET layer 23, and a bottom PET layer 24. The first PET layer 22 is folded in half to form a first PET folded layer 25, and the second PET layer 23 is folded in half to form a second PET folded layer 26. Both the first PET folded layer 25 and the second PET folded layer 26 are located between the top film layer 21 and the bottom PET layer 24, and the fold line of the first PET folded layer 25 corresponds to and contacts the fold line of the second PET folded layer 26. The openings of the PET folded layer 25 and the second PET folded layer 26 are both outwards. The upper and lower surfaces of the openings of the first PET folded layer 25 and the second PET folded layer 26 are not in contact with each other. The upper surfaces of the first PET folded layer 25 and the second PET folded layer 26 are both attached to the lower surface of the top film layer 21. The lower surfaces of the first PET folded layer 25 and the second PET folded layer 26 are both attached to the upper surface of the bottom PET layer 24. The lower surface of the bottom PET layer 24 is attached to the upper surface of the lower layer 1.

[0022] The openings of the first PET folded layer 25 and the second PET folded layer 26 are both outward and their upper and lower surfaces are not attached. When the upper part of the first PET folded layer 25 and the second PET folded layer 26 is lifted up and closed, a butterfly-shaped pull ear is formed. Users can easily lift the butterfly pull ear 2 by pinching both ends without fingernails or tools, thus avoiding bacterial contamination.

[0023] The butterfly pull tab 2 is made of a multi-layer structure consisting of a top film layer 21, a double-folded PET layer, and a bottom PET layer 24. This makes the butterfly pull tab 2 stiff, strong in tensile strength, and less prone to breakage at the base when it is torn. It can also be operated smoothly by the elderly, children, or when their hands are wet.

[0024] The lower surface of the aforementioned lower layer 1 adheres to the mouth of the sealed bottle 3. When tearing this simplified butterfly pull tab 2 foam sealing sheet, the user pinches the upper half of the butterfly pull tab 2 with two fingers and pulls the entire sealing sheet upwards. The lower layer 1 of the sealing sheet tears along the mouth of the sealed bottle 3, creating a neat and smooth opening at the mouth of the sealed bottle 3.

[0025] The upper surface of the first PET folded layer 25 is bonded to the lower surface of the top film layer 21, the upper surface of the second PET folded layer 26 is bonded to the lower surface of the top film layer 21, the lower surface of the first PET folded layer 25 is bonded to the upper surface of the bottom PET layer 24, the lower surface of the second PET folded layer 26 is bonded to the upper surface of the bottom PET layer 24, and the lower surface of the bottom PET layer 24 is bonded to the upper surface of the lower layer 1 by adhesive layer 4. The adhesive layer 4 can be a hot melt adhesive or similar material.

[0026] A first glossy film 27 is adhered to both the upper and lower surfaces of the opening of the first PET folded layer 25. The melting point of the first glossy film 27 is greater than that of the first PET folded layer 25. A second glossy film 28 is adhered to both the upper and lower surfaces of the opening of the second PET folded layer 26. The melting point of the second glossy film 28 is greater than that of the second PET folded layer 26. The melting point of the glossy film needs to be greater than that of the PET material. When the other PET layers are heat-sealed, the melting point of the glossy film has not yet been reached, preventing the upper and lower surface glossy films of the two PET folded layer openings from being heat-sealed. Consequently, the upper and lower surfaces of the openings of the first PET folded layer 25 and the second PET folded layer 26 are not adhered. The first glossy film 27 is adhered to the upper and lower surfaces of the opening of the first PET folded layer 25 via an adhesive layer 4, and the second glossy film 28 is adhered to the upper and lower surfaces of the opening of the second PET folded layer 26 via an adhesive layer 4.

[0027] Both the first optical film 27 and the second optical film 28 are polyetheretherketone (PEEK) films. The above-mentioned PEEK films have a melting point of approximately 343°C.

[0028] The top film layer 21 is a PET film. The PET film has high transparency, is non-toxic and odorless, has high tensile strength, good stiffness, and good adhesion. When used at room temperature, the edges are straight and there is no residue, which can protect the lower surface of the aluminum foil layer 12.

[0029] The lower layer 1 includes a functional film layer 11, an aluminum foil layer 12, and a foam layer 13, which are sequentially bonded from bottom to top. The lower surface of the bottom PET layer 24 is bonded to the upper surface of the foam layer 13. The lower surface of the aluminum foil layer 12 is bonded to the upper surface of the functional film layer 11, the lower surface of the foam layer 13 is bonded to the upper surface of the aluminum foil layer 12, and the lower surface of the bottom PET layer 24 is bonded to the upper surface of the foam layer 13.

[0030] The lower surface of the aluminum foil layer 12 is bonded to the upper surface of the functional film layer 11, the lower surface of the foam layer 13 is bonded to the upper surface of the aluminum foil layer 12, and the lower surface of the bottom PET layer 24 is bonded to the upper surface of the foam layer 13 by adhesive layer 4. The adhesive layer 4 can be hot melt adhesive or the like.

[0031] The functional film layer 11 is either a heat-sealable film or an easy-tear film. The heat-sealable film can be made of PE, PP, or EVA. The easy-tear film can be made of PE, PP, or PET. When using the film, the appropriate functional film layer 11 can be selected based on the material of the container.

[0032] like Figure 2 As shown, this utility model also provides a sealed bottle 3 with the above-mentioned simplified butterfly pull foam sealing sheet, which is attached to the bottle mouth of the sealed bottle 3.

[0033] Example 2, as Figure 3 As shown, the simplified butterfly pull-ear foam sealing sheet and sealing bottle in this embodiment differ from those in Embodiment 1 in that: The lower layer 1 has an annular easy-tear line 14, which runs from top to bottom through the foam layer 13, the aluminum foil layer 12, and the functional film layer 11. The butterfly pull tab 2 is located inside the annular easy-tear line 14. The annular easy-tear line 14 defines a fixed opening area for the sealing sheet, preventing irregular tearing during opening and ensuring a neat opening boundary. Furthermore, the lower layer 1 outside the annular easy-tear line 14 remains bonded to the mouth of the sealed bottle 3, preventing the entire sealing sheet from detaching when opened and preventing external moisture and impurities from entering the sealed bottle (the unopened area remains sealed).

[0034] The outer edge of the bottom PET layer 24 of the butterfly pull tab 2 is adjacent to the annular easy-tear line 14. This arrangement shortens the distance between the butterfly pull tab 2 and the annular easy-tear line 14, allowing the pulling force to be directly transmitted to the annular easy-tear line 14, ensuring that the annular easy-tear line 14 breaks completely in one go.

[0035] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, they should all fall within the protection scope of this utility model.

Claims

1. A simplified butterfly-shaped pull-ear foam sealing sheet, characterized in that: The device includes a lower layer and a butterfly flap. The butterfly flap includes a top film layer, a first PET layer, a second PET layer, and a bottom PET layer. The first PET layer is folded in half to form a first PET folded layer, and the second PET layer is folded in half to form a second PET folded layer. Both the first and second PET folded layers are located between the top film layer and the bottom PET layer, and the fold lines of the first and second PET folded layers correspond to each other. The openings of both the first and second PET folded layers face outwards. The upper and lower surfaces of the openings of the first and second PET folded layers are not in contact with each other. The upper surfaces of the first and second PET folded layers are attached to the lower surface of the top film layer, and the lower surfaces of the first and second PET folded layers are attached to the upper surface of the bottom PET layer. The lower surface of the bottom PET layer is attached to the upper surface of the lower layer.

2. The simplified butterfly pull-ear foam sealing sheet as described in claim 1, characterized in that: The upper surface of the first PET folded layer is bonded to the lower surface of the top film layer, the upper surface of the second PET folded layer is bonded to the lower surface of the top film layer, the lower surface of the first PET folded layer is bonded to the upper surface of the bottom PET layer, the lower surface of the second PET folded layer is bonded to the upper surface of the bottom PET layer, and the lower surface of the bottom PET layer is bonded to the upper surface of the lower layer through an adhesive layer.

3. The simplified butterfly pull-ear foam sealing sheet as described in claim 1, characterized in that: The upper and lower surfaces of the opening of the first PET folded layer are both covered with a first optical film, the melting point of which is greater than that of the first PET folded layer; the upper and lower surfaces of the opening of the second PET folded layer are both covered with a second optical film, the melting point of which is greater than that of the second PET folded layer.

4. The simplified butterfly pull-ear foam sealing sheet as described in claim 3, characterized in that: Both the first and second optical films are nano-titanium oxide films or polyether ether ketone films.

5. The simplified butterfly pull-ear foam sealing sheet as described in claim 1, characterized in that: The top film layer is a PET film, PP film, or PE film.

6. The simplified butterfly pull-ear foam sealing sheet as described in claim 1, characterized in that: The lower layer includes a functional film layer, an aluminum foil layer and a foam layer that are sequentially bonded from bottom to top, and the lower surface of the bottom PET layer is bonded to the upper surface of the foam layer.

7. The simplified butterfly pull-ear foam sealing sheet as described in claim 6, characterized in that: The lower surface of the aluminum foil layer and the upper surface of the functional film layer, the lower surface of the foam layer and the upper surface of the aluminum foil layer, and the lower surface of the bottom PET layer and the upper surface of the foam layer are all bonded together by an adhesive layer; The functional film layer is a heat-sealable film or an easy-tear film.

8. The simplified butterfly pull-ear foam sealing sheet as described in claim 6, characterized in that: The lower layer is provided with an annular easy-tear line, which runs through the foam layer, aluminum foil layer and functional film layer from top to bottom, and the butterfly pull is located inside the annular easy-tear line.

9. The simplified butterfly pull-ear foam sealing sheet as described in claim 8, characterized in that: The outer edge of the bottom PET layer of the butterfly pull is adjacent to the annular easy-tear line.

10. A sealing bottle, comprising a simplified butterfly pull foam sealing sheet as described in any one of claims 1-9, characterized in that: The simplified butterfly-shaped pull tab foam sealing sheet is attached to the mouth of the sealed bottle.

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