Packing material structure

Abstract

The utility model discloses a packing material structure which can play a role in shaping when a material is folded and formed by taking a PET (Polyethylene Terephthalate) supporting layer with relatively high strength as a core layer, so that the appearance of a product is smoother, and the problems in the prior art are solved. The packing material structure provided by the utility model comprises a PP (Polypropylene) inner layer, an aluminum foil layer, a PET (Polyethylene Terephthalate) supporting layer, a paper layer and an outer PE (Polyethylene) layer which are arranged in sequence, when the packing material structure is folded and formed, the PP inner layer is located on the inner side.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a packaging structure. Background Technology

[0002] Packaging materials refer to packaging materials, such as outer packaging films for food and filling containers for liquids.

[0003] Tetra Pak cartons are a common type of filling container for liquids. They are made of a composite of paper, plastic, and aluminum after printing, and are used for aseptic filling of liquids such as milk and beverages. They are named for their square, brick-like shape after molding, and because the Swedish company Tetra Pak holds a large market share. Currently, the packaging materials used for liquid filling are relatively weak in hardness and strength, resulting in insufficient strength when molded into filling containers, sometimes leading to irregular product shapes.

[0004] The technical defects of the existing technology as described above have become a major technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This utility model discloses a packaging structure that uses a relatively high-strength PET support layer as the core layer, which can play a shaping role when the material is folded and formed, making the product's shape more flat, thereby solving the problems existing in the prior art.

[0006] The packaging structure provided by this utility model includes a PP inner layer, an aluminum foil layer, a PET support layer, a paper layer and an outer PE layer arranged in sequence.

[0007] When the packaging structure is folded into shape, the PP inner layer is located on the inside.

[0008] Preferred,

[0009] At least one side of the PET support layer is a non-smooth surface.

[0010] Preferred,

[0011] At least one side of the PET support layer is provided with a textured surface.

[0012] Preferred,

[0013] The PET support layer is in a heated and bonded state, and is then laminated with the aluminum foil layer and the paper layer.

[0014] Preferred,

[0015] The aluminum foil layer, PET support layer and paper layer are bonded together by an adhesive layer.

[0016] Preferred,

[0017] The PET support layer has creases.

[0018] The packaging structure provided by this utility model includes a PP inner layer, an aluminum foil layer, a PET support layer, a paper layer, and an outer PE layer arranged sequentially. When the packaging structure is folded into shape, the PP inner layer is located on the inside. By using the relatively high-strength PET support layer as the core layer, the packaging structure of this utility model can play a shaping role when the material is folded into shape, making the product's shape more flat, thereby solving the problems existing in the prior art. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the packaging material structure of this utility model;

[0020] Figure 2 A schematic diagram showing the textured surface of the PET support layer 3 in the packaging material structure of this utility model.

[0021] Figure 3 This is a schematic diagram illustrating the application of the packaging material structure of this utility model in a packaging box;

[0022] The packaging structure is 001. Detailed Implementation

[0023] This utility model discloses a packaging structure that uses a relatively high-strength PET support layer as the core layer, which can play a shaping role when the material is folded and formed, making the product's shape more flat, thereby solving the problems existing in the prior art.

[0024] The technical solutions of the present utility model will be clearly and thoroughly described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Please refer to... Figures 1 to 3 The packaging structure of this utility model includes a PP inner layer 1, an aluminum foil layer 2, a PET support layer 3, a paper layer 4, and an outer PE layer 5 arranged sequentially.

[0025] When the packaging structure is folded into shape, the inner PP layer 1 is located on the inside.

[0026] In this invention, the composite of the aluminum foil layer 2, the PET support layer 3, and the paper layer 4 can achieve high strength, and can improve the plastic strength of the overall material during packaging molding.

[0027] The PET support layer 3 can be pre-processed with creases of various specifications before being laminated with the aluminum foil layer 2 and paper layer 4. This makes packaging easier and results in a more rigid and less prone to collapse or deformation. The PP inner layer 1, utilizing the properties of PP material, can directly contact food, is heat-resistant, and does not easily release microplastics, making it a superior choice for the inner layer. Furthermore, because PP has a higher melting point than the outer PE layer, the bonding between the inner and outer layers is stronger and more stable during overall lamination. It should be noted that the creases in the PET support layer 3 can be pre-processed or laminated with other layers; this is not limited here.

[0028] Preferred,

[0029] At least one side of the PET support layer 3 is a non-smooth surface.

[0030] Preferred,

[0031] At least one surface of the PET support layer 3 is provided with a textured surface.

[0032] It should be noted that at least one surface of the PET support layer 3 has a textured surface or is a non-smooth surface. Generally, textured surfaces can be provided on both surfaces of the PET support layer 3. This makes the adhesion between the PET support layer 3 and other layers tighter and improves the overall integrity. The textured surface can be a cross-shaped diagonal pattern, a wavy pattern, or other textures with uneven surfaces.

[0033] Preferred,

[0034] The PET support layer 3 is in a heated and bonded state, and is laminated with the aluminum foil layer 2 and the paper layer 4.

[0035] Preferred,

[0036] The aluminum foil layer 2, the PET support layer 3, and the paper layer 4 are bonded together by an adhesive layer.

[0037] It should be noted that the PET support layer 3 has adhesive properties after heating. This property can be used to directly heat the PET support layer 3 so that it is in an adhesive state after heating and can be directly laminated with the aluminum foil layer 2 and the paper layer 4. Alternatively, an adhesive layer can be set between the layers. This is not limited here.

[0038] Preferred,

[0039] Creases are provided on the PET support layer 3.

[0040] In this utility model, it should be noted that, since the rigidity of the packaging structure is relatively high after adding the PET support layer 3, it is relatively difficult to fold. Therefore, creases can be preset on the PET support layer 3, and then composited to form the packaging structure of this utility model. When packaging, the packaging structure made in this way only needs to be folded along the preset creases, making folding easier and the packaging forming effect better.

[0041] The packaging structure provided by this utility model includes a PP inner layer 1, an aluminum foil layer 2, a PET support layer 3, a paper layer 4, and an outer PE layer 5 arranged sequentially. When the packaging structure is folded into shape, the PP inner layer 1 is located on the inside. By using the relatively high-strength PET support layer as the core layer, the packaging structure of this utility model can play a shaping role when the material is folded into shape, making the product's shape more flat, thereby solving the problems existing in the prior art.

[0042] The packaging material structure provided by this utility model has been described in detail above. For those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A package structure, characterized by, The package material structure comprises a PP inner layer (1), an aluminum foil layer (2), a PET support layer (3), a paper layer (4) and a PE outer layer (5) arranged in sequence. The PP inner layer (1) is located at the inner side when the package material structure is folded and formed.

2. The package structure of claim 1, wherein At least one surface of the PET support layer (3) is a non-smooth surface.

3. The package structure of claim 1, wherein A concave-convex texture is arranged on at least one surface of the PET support layer (3).

4. The package structure of claim 1, wherein The PET support layer (3) is in a bonded state after being heated, and is combined with the aluminum foil layer (2) and the paper layer (4).

5. The package structure of claim 1, wherein The aluminum foil layer (2), the PET support layer (3) and the paper layer (4) are combined through an adhesive layer.

6. The package structure according to any one of claims 1 to 5, wherein, A fold is arranged on the PET support layer (3).

Images