CN217865895U - Aluminum-free multifunctional aseptic packaging paper-based composite material - Google Patents
Aluminum-free multifunctional aseptic packaging paper-based composite material Download PDFInfo
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- CN217865895U CN217865895U CN202122942818.3U CN202122942818U CN217865895U CN 217865895 U CN217865895 U CN 217865895U CN 202122942818 U CN202122942818 U CN 202122942818U CN 217865895 U CN217865895 U CN 217865895U
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Abstract
The utility model relates to a multi-functional aseptic packing paper base combined material of no aluminium includes outside-in: a low-density polyethylene LDPE layer, a printing layer, a cardboard layer and a co-extruded multifunctional composite film layer. The utility model discloses choose for use the PET membrane that has the high barrier coating to replace the aluminium foil, the PET membrane that has the high barrier coating has outstanding barrier property, can hinder oxygen and hinder wet light that hinders, and the shelf life is not inferior to paper aluminum-plastic packaging. The composite material makes greater contribution in the aspects of low carbon, environmental protection, energy conservation, consumption reduction and carbon neutralization by helping to realize the carbon peak reaching and carbon neutralization targets.
Description
Technical Field
The utility model belongs to the field of packaging paper, in particular to an aluminum-free multifunctional aseptic packaging paper base composite material.
Background
With the gradual rise of the price of the raw materials of the paper-aluminum-plastic packaging, the price of the aluminum foil is always high, even the aluminum foil continues to rise, and as the aluminum foil is a heavy metal material, the aluminum foil cannot be degraded, and the recycling cost and the environmental protection requirement are high, in order to effectively control the cost, the aluminum-free packaging paper needs to be developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a multi-functional aseptic packaging paper base combined material of no aluminium is provided, this combined material chooses for use the PET membrane that has the high barrier coating to replace the aluminium foil to alleviate the high cost that the price of raw and other materials rises and bring and reduce environmental pollution, have outstanding separation performance, can hinder oxygen and hinder wet light, the shelf life is not inferior to paper plastic-aluminum packing.
The utility model provides a multi-functional aseptic packaging paper base combined material of no aluminium includes from the outside to the inside: the printing paper comprises a low-density polyethylene LDPE layer, a printing layer, a paperboard layer and a co-extruded multifunctional composite film layer; wherein, the multifunctional composite film layer of coextrusion includes from outside to inside: the polyethylene heat-sealing film comprises a polyethylene color master layer, a bonding layer, a high-barrier coating PET film and a co-extrusion heat-sealing layer.
The LDPE layer is used for waterproof isolation, the printing layer is used for restoring various colors and attracting eyes of consumers, and the cardboard layer provides framework support.
The polyethylene color master layer is prepared by blending polyethylene and color master batches, so that consumers can adapt to the conventional aluminum foil color sense, and the color master batches are food-grade resin without any metal component or fluorescent agent.
The bonding layer is bonding resin taking polyethylene as a base material, and has enough bonding strength with the polyethylene color master layer and the high-barrier coating PET film.
The high-barrier coating PET film is a high-barrier composite layer of ethylene-vinyl alcohol or polyvinyl alcohol, has high oxygen-resistant and water-resistant performance, and has the oxygen permeability and moisture permeability similar to those of aluminum foil.
The co-extruded heat sealing layer material is modified low-density polyethylene (sold in the market) and has excellent heat sealing performance.
Advantageous effects
The utility model discloses select for use the PET membrane that has high barrier coating to replace the aluminium foil to alleviate the environmental protection pressure that carbon discharged, carbon neutralized, the PET membrane of high barrier coating has outstanding barrier property, can hinder oxygen and hinder wet light, and the product shelf life of using this material to make is no less than the product shelf life of using the aluminium foil as barrier material.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the co-extruded multifunctional composite film layer of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Example 1
As shown in fig. 1, the present embodiment provides an aluminum-free multifunctional aseptic packaging paper-based composite material, which comprises from outside to inside: a low-density polyethylene LDPE layer 101, a printing layer 102, a paperboard layer 103 and a co-extruded multifunctional composite film layer 104; wherein, the multi-functional composite film layer of coextruding includes from the outside to the inside: the polyethylene heat-seal film comprises a polyethylene color master layer 1, an adhesive layer 2, a high-barrier coating PET film 3 and a co-extrusion heat-seal layer 4.
The polyethylene color master layer 1 is prepared by blending polyethylene and color master batches, and the color of the polyethylene color master layer is equal to that of the aluminum foil.
The adhesive layer 2 is an adhesive resin using polyethylene as a base material.
The high-barrier coating PET film 3 is formed by overlapping an inorganic evaporation barrier layer on a substrate PET film.
The co-extruded heat-sealing layer material 4 is modified low-density polyethylene, and has excellent low-temperature heat sealability.
The high barrier coated PET film 3 in this example has the following excellent properties:
(1) Has excellent barrier property, high water resistance and high oxygen resistance, and can protect the contents from the influence of environmental temperature/humidity. Prevent 'damp', 'putrefaction', tainting odor, etc., and is suitable for various environments.
(2) The method is environment-friendly, can quickly realize paper-plastic separation during waste recycling, does not generate chlorine gas when adopting an incineration mode if the waste cannot be recycled, and does not generate residues when being completely incinerated.
(3) The product has non-metal property, and can be heated by metal detector or microwave oven in the whole production process.
(4) The packaging molding has excellent weather resistance, flex resistance and bending resistance.
(5) When the aluminum foil is replaced, the source resource reduction can be realized, the total amount of waste can be reduced, and the carbon emission can be reduced.
(6) The oxygen transmission rate of the barrier film is less than or equal to 1cm 3 /(m 2 D.), conventional values in the range of 0.5cm 3 /(m 2 .d)。
(7) The water vapor transmission rate of the barrier film is less than or equal to 1g/m 2 D, conventional values are 0.5g/m 2 。
The oxygen transmission rate data of the PET film 3 with the high barrier coating in this example and the aseptic packaging paper-based composite material with aluminum foil or ordinary PET film as the barrier material have lower oxygen transmission rate than aluminum foil and higher peel strength with the inner layer than aluminum foil. The performance of the whole material completely meets the national standard requirements, and the material makes greater contribution in the aspects of low carbon, environmental protection, energy conservation, consumption reduction, and realization of carbon peak reaching and carbon neutralization targets by assistance.
Claims (3)
1. The aluminum-free multifunctional aseptic packaging paper-based composite material is characterized in that: the outside-in comprises: the printing paper comprises a low-density polyethylene LDPE layer, a printing layer, a paperboard layer and a co-extruded multifunctional composite film layer; wherein, the multi-functional composite film layer of coextruding includes from the outside to the inside: the polyethylene heat-sealing film comprises a polyethylene color master layer, an adhesive layer, a high-barrier coating PET film and a co-extrusion heat-sealing layer.
2. The composite material of claim 1, wherein: the high-barrier coating PET film is formed by overlapping an inorganic evaporation barrier layer on a substrate PET film.
3. The composite material according to claim 1, characterized in that: the material of the co-extruded heat sealing layer is modified low-density polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122942818.3U CN217865895U (en) | 2021-11-26 | 2021-11-26 | Aluminum-free multifunctional aseptic packaging paper-based composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122942818.3U CN217865895U (en) | 2021-11-26 | 2021-11-26 | Aluminum-free multifunctional aseptic packaging paper-based composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217865895U true CN217865895U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122942818.3U Active CN217865895U (en) | 2021-11-26 | 2021-11-26 | Aluminum-free multifunctional aseptic packaging paper-based composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217865895U (en) |
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2021
- 2021-11-26 CN CN202122942818.3U patent/CN217865895U/en active Active
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