Container closure membrane and packaging structure

Abstract

The utility model discloses a container sealing cover film, including nylon film layer, plating alumina PET film layer, ivory white PET film layer and heat -seal PE film layer, plating alumina PET film layer with ivory white PET film layer is located respectively both sides of nylon film layer, heat -seal PE film layer sets up one side of ivory white PET film layer, and nylon film layer and heat -seal PE film layer are located respectively both sides of ivory white PET film layer. The application also discloses a packaging structure comprising the above container sealing cover film.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials, and in particular to a container sealing cap film and packaging structure. Background Technology

[0002] Currently, many containers use composite films for sealing after filling. Patent publication CN206704833U discloses a composite film for sealing containers. The innermost layer of this composite film is made of mesh fabric. Since the mesh fabric itself is not adhesive, glue must be used to bond the mesh fabric to the container when sealing the container. However, there is a problem with using glue to bond the mesh fabric to the container: if the container is heat-sterilized after being sealed with this type of composite film, the glue at the container opening is prone to melting and overflowing due to heat. Once melting and overflowing occurs, it will affect the sealing strength and make the container very prone to warping. Utility Model Content

[0003] This utility model addresses the above-mentioned problems by proposing a container sealing cap film.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A container sealing cap film includes a nylon film layer, an alumina-coated PET film layer, a milky white PET film layer, and a heat-sealable PE film layer. The alumina-coated PET film layer and the milky white PET film layer are respectively located on both sides of the nylon film layer, and the heat-sealable PE film layer is disposed on one side of the milky white PET film layer. The nylon film layer and the heat-sealable PE film layer are respectively located on both sides of the milky white PET film layer.

[0006] This type of container sealing film is made by laminating a nylon film layer, an alumina-coated PET film layer, a milky white PET film layer, and a heat-sealable PE film layer. The heat-sealable PE film layer is used for heat sealing and bonding. When this type of film is used to seal the opening of a container, the seal strength is high after sealing, and there will be no melting or overflow when heated for sterilization after sealing. Furthermore, the composite film made of nylon film layer, alumina-coated PET film layer, milky white PET film layer, and heat-sealable PE film layer has good stiffness and barrier properties, which can ensure the airtightness of the container after sealing. Compared with aluminum foil, the nylon film layer, alumina-coated PET film layer, and milky white PET film layer are less prone to warping after being heated.

[0007] In summary, this type of container sealing film is made by combining a nylon film layer, an alumina-coated PET film layer, a milky white PET film layer, and a heat-sealing PE film layer. The heat-sealing PE film layer is used for heat bonding, which has a good heat-sealing effect and is not prone to warping after being heated.

[0008] In this type of cover film, since the nylon film layer, the alumina-coated PET film layer, and the milky white PET film layer all have good puncture resistance, this type of cover film has good puncture resistance.

[0009] In this cover film, the alumina-coated PET film layer and the milky white PET film layer are located on both sides of the nylon film layer, which ensures that the entire cover film has good barrier properties.

[0010] Optionally, it also includes a first adhesive layer, a second adhesive layer, and a third adhesive layer, wherein the first adhesive layer is disposed between the alumina-coated PET film layer and the nylon film layer, the second adhesive layer is located between the nylon film layer and the milky white PET film layer, and the third adhesive layer is located between the milky white PET film layer and the heat-sealable PE film layer.

[0011] The first, second, and third adhesive layers serve two purposes: first, to bond the composite film layers together; and second, to ensure that the entire composite film has relatively high stiffness and is not prone to warping or deformation after being heated.

[0012] Optionally, it also includes a first ink printing layer and a second ink printing layer, wherein the first ink printing layer and the second ink printing layer are respectively disposed on both sides of the milky white PET film layer.

[0013] The purpose of setting a first ink printing layer and a second ink printing layer on both sides of the milky white PET film layer is to facilitate viewing the printing information on the cover film from both sides.

[0014] Optionally, the thickness of the alumina-coated PET film is 12 micrometers.

[0015] Optionally, the thickness of the nylon film is 15 micrometers.

[0016] Optionally, the thickness of the milky white PET film layer is 15 micrometers.

[0017] Optionally, the thickness of the heat-sealable PE film layer is 20 micrometers to 30 micrometers.

[0018] A packaging structure includes a container having an opening, and a container sealing cap film as described above, wherein the heat-sealable PE film layer is bonded to the opening.

[0019] This type of packaging structure includes, but is not limited to, bottles and boxes, and the material used to make the containers is plastic.

[0020] The beneficial effects of this utility model are: it uses a composite of a nylon film layer, an alumina-coated PET film layer, a milky white PET film layer, and a heat-sealing PE film layer. The heat-sealing PE film layer is used for heat bonding, which has a good heat-sealing bonding effect and is not prone to warping after being heated. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a simplified schematic diagram of the structure of a container sealing film.

[0023] The figures are labeled as follows: 101, alumina-coated PET film layer; 102, first adhesive layer; 103, nylon film layer; 104, second adhesive layer; 105, first printing ink layer; 106, milky white PET film layer; 107, second printing ink layer; 108, third adhesive layer; 109, heat-sealed PE film layer. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] Example 1

[0028] As attached Figure 1As shown, a container sealing cap film includes a nylon film layer 103, an alumina-coated PET film layer 101, a milky white PET film layer 106, and a heat-sealing PE film layer 109. The alumina-coated PET film layer 101 and the milky white PET film layer 106 are respectively located on both sides of the nylon film layer 103, and the heat-sealing PE film layer 109 is disposed on one side of the milky white PET film layer 106. The nylon film layer 103 and the heat-sealing PE film layer 109 are respectively located on both sides of the milky white PET film layer 106.

[0029] This type of container sealing film is composited with a nylon film layer 103, an alumina-coated PET film layer 101, a milky white PET film layer 106, and a heat-sealable PE film layer 109. The heat-sealable PE film layer 109 is used for heat sealing and bonding. When this type of film is used to seal the opening of a container, the sealing strength is high after sealing, and there is no melting or overflow when heating and sterilizing after sealing. In this type of film, the composite of nylon film layer 103, alumina-coated PET film layer 101, milky white PET film layer 106, and heat-sealable PE film layer 109 gives the entire composite film good stiffness and barrier properties, which can ensure the airtightness of the container after sealing. Compared with aluminum foil, the nylon film layer 103, alumina-coated PET film layer 101, and milky white PET film layer 106 are less prone to warping after being heated.

[0030] In summary, this type of container sealing film is made by combining a nylon film layer 103, an alumina-coated PET film layer 101, a milky white PET film layer 106, and a heat-sealing PE film layer 109. The heat-sealing PE film layer 109 is used for heat bonding, which has a good heat-sealing effect and is not prone to warping after being heated.

[0031] In this type of cover film, since the nylon film layer 103, the alumina-coated PET film layer 101, and the milky white PET film layer 106 all have good puncture resistance, this type of cover film has good puncture resistance.

[0032] In this cover film, the alumina-coated PET film layer 101 and the milky white PET film layer 106 are located on both sides of the nylon film layer 103, which ensures that the entire cover film has good barrier properties.

[0033] As attached Figure 1 As shown, it also includes a first adhesive layer 102, a second adhesive layer 104, and a third adhesive layer 108. The first adhesive layer 102 is disposed between the alumina-coated PET film layer 101 and the nylon film layer 103. The second adhesive layer 104 is located between the nylon film layer 103 and the milky white PET film layer 106. The third adhesive layer 108 is located between the milky white PET film layer 106 and the heat-sealed PE film layer 109.

[0034] The first adhesive layer 102, the second adhesive layer 104, and the third adhesive layer 108 serve two purposes: first, to bond the composite film layers together; and second, to ensure that the entire composite film has relatively high stiffness and is not prone to warping or deformation after being heated.

[0035] As attached Figure 1 As shown, it also includes a first ink printing layer and a second ink printing layer, which are respectively disposed on both sides of the milky white PET film layer 106.

[0036] The purpose of setting a first ink printing layer and a second ink printing layer on both sides of the milky white PET film layer 106 is to facilitate viewing the printing information on the cover film from both sides.

[0037] As attached Figure 1 As shown, the thickness of the alumina-coated PET film layer 101 is 12 micrometers.

[0038] As attached Figure 1 As shown, the thickness of the nylon film 103 is 15 micrometers.

[0039] As attached Figure 1 As shown, the thickness of the milky white PET film layer 106 is 15 micrometers.

[0040] As attached Figure 1 As shown, the thickness of the heat-sealed PE film layer 109 is 20 micrometers to 30 micrometers.

[0041] Example 2

[0042] A packaging structure includes a container having an opening, and also includes a container sealing cap film as shown in Example 1, wherein a heat-sealable PE film layer is bonded to the opening.

[0043] This type of packaging structure includes, but is not limited to, bottles and boxes, and the material used to make the containers is plastic.

[0044] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A container sealing film, characterized in that, It includes a nylon film layer, an alumina-coated PET film layer, a milky white PET film layer, and a heat-sealable PE film layer. The alumina-coated PET film layer and the milky white PET film layer are respectively located on both sides of the nylon film layer, and the heat-sealable PE film layer is disposed on one side of the milky white PET film layer. The nylon film layer and the heat-sealable PE film layer are respectively located on both sides of the milky white PET film layer.

2. The container sealing film according to claim 1, characterized in that, It also includes a first adhesive layer, a second adhesive layer and a third adhesive layer. The first adhesive layer is disposed between the alumina-coated PET film layer and the nylon film layer. The second adhesive layer is located between the nylon film layer and the milky white PET film layer. The third adhesive layer is located between the milky white PET film layer and the heat-sealable PE film layer.

3. The container sealing film according to claim 1, characterized in that, It also includes a first ink printing layer and a second ink printing layer, which are respectively disposed on both sides of the milky white PET film.

4. A container sealing film according to claim 1, characterized in that, The thickness of the alumina-coated PET film is 12 micrometers.

5. A container sealing film according to claim 1, characterized in that, The thickness of the nylon film is 15 micrometers.

6. A container sealing film according to claim 1, characterized in that, The thickness of the milky white PET film is 15 micrometers.

7. A container sealing film according to claim 1, characterized in that, The thickness of the heat-sealable PE film layer is 20 micrometers to 30 micrometers.

8. A packaging structure comprising a container having an opening, characterized in that, It also includes the container sealing cap film as described in any one of claims 1 to 7, wherein the heat-sealing PE film layer is bonded together with the opening.

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