High-water-resistance aluminum-plated composite film made of single polyolefin material
By using high-water-resistant aluminum-plated polyethylene film in a single-class polyolefin material packaging composite film to form a double-layer structure, the problem of poor water-blocking performance in the prior art is solved. , realizes cost reduction and simplified production comparable to the performance of the three-layer structure.
Patent Information
- Application Number
- CN202420804972.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The poor water-blocking performance of existing single-class polyolefin material packaging composite films limits its application range.
High-water-resistance aluminum-plated polyethylene film is used as the main structure of the composite film. Through the combination of aluminum layer and functional film, a double-layer structure aluminum-plated composite film is formed, which improves the water-blocking performance of the composite film. , and simplify the structure and reduce the amount of adhesive used.
The same water barrier properties as the three-layer structure composite film are achieved, which reduces production costs and processing difficulties, improves environmental protection and recyclability, and partially replaces the existing three-layer structure composite film.
Smart Images
Figure CN222136158U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of soft packaging and relates to an aluminum-plated composite film made of a single polyolefin material with high water resistance. Background Art
[0002] In the field of flexible packaging, there are currently packaging composite films made of a single type of polyolefin material, which have high recycling and granulation utilization value, can increase the reuse rate of polymer products, and can effectively save disposable energy-based materials. However, although the packaging composite films made of a single type of polyolefin material meet the requirements of environmentally friendly materials, their barrier properties are very poor, especially the water barrier properties, which limits the application scope of the packaging composite films made of a single type of polyolefin material. Utility Model Content
[0003] The purpose of the utility model is to provide a highly water-resistant aluminum-plated composite film made of a single polyolefin material, which solves the problem that the existing single-type polyolefin material composite packaging has poor water resistance and limits the application scope of the single-type polyolefin material packaging composite film.
[0004] The technical solution adopted by the utility model is as follows:
[0005] A high water-resistance aluminum-plated composite film made of a single polyolefin material, comprising a high water-resistance aluminum-plated polyethylene film, wherein the high water-resistance aluminum-plated polyethylene film comprises an aluminum layer and a functional film provided with an aluminum-plated layer, wherein the functional film is a high water-resistance polyethylene aluminum-plated base film, and the aluminum layer is attached to the aluminum-plated layer of the functional film to form a high water-resistance aluminum-plated polyethylene film.
[0006] The utility model uses a high water-resistance aluminum-coated polyethylene film as the main structure of a high water-resistance single-type polyolefin material packaging composite film, and can obtain a high water-resistance single-type polyolefin aluminum-coated composite film. The utility model utilizes the high water-resistance performance of the high water-resistance aluminum-coated polyethylene film to improve the overall water-resistance performance of the composite film, and solves the problem that the existing single-type polyolefin material packaging composite film has poor water-resistance, which limits the application scope of the single-type polyolefin material packaging composite film.
[0007] The high water-resistance aluminum-plated composite film made of a single polyolefin material also includes another polyolefin-based film. The high water-resistance aluminum-plated polyethylene film and the other polyolefin film are composited to form the high water-resistance aluminum-plated composite film made of a single polyolefin material.
[0008] The existing high water-resistant three-layer aluminized composite films generally include structures such as an outer printing layer, an intermediate barrier layer and an inner sealing layer, such as BOPP / VMPET / PE, BOPP / VMBOPP / PE, PET / VMPET / PE and the like. In the utility model, the polyolefin film and the high water-resistant aluminized polyethylene film form a double-layer high water-resistant single-type polyolefin material composite packaging film (PO / VMPE), PO is polyolefin, VMPE is aluminized polyethylene, and the water-resistant performance of the double-layer structure of PO / VMPE in the utility model is equivalent to that of the existing three-layer structure, and the utility model simplifies the structure, saves a layer of adhesive, and improves production efficiency. Therefore, the PO / VMPE double-layer structure composite film corresponding to the utility model can partially and directly replace the existing three-layer structure composite film. For example, the original BOPP / VMPET / PE can be converted into a single PO structure BOPP / VMPE by using the utility model. Not only does BOPP / VMPE have equivalent performance, but BOPP / VMPE has one less structure than BOPP / VMPET / PE, which not only reduces the processing difficulty of the composite film, but also reduces the total production cost such as the comprehensive cost of the composite material, energy consumption cost, and labor cost.
[0009] Furthermore, the thickness of the aluminum layer is 300-600 angstroms. When the thickness of the aluminum layer in the utility model is 300-600 angstroms, the obtained high water-resistant aluminum-plated polyethylene film can reach the standard of water vapor permeability <1.0g / m2.day.1atm, achieving low aluminum usage and high water-resistant performance.
[0010] Furthermore, the thickness of the functional film is 20-120 um.
[0011] When the thickness of the functional layer is 20-120 um, the water-barrier performance of the obtained high water-barrier aluminum-plated polyethylene film can meet the use requirements.
[0012] Furthermore, the functional film includes at least three layers of film structure. The functional film is generally provided with only one aluminum-plated layer, which has good polarity and strong adhesion with the aluminum layer. Under the condition that the use requirements can be met, the thinner the aluminum-plated functional layer is, the less it is used, the less consumables are, and the lower the cost is.
[0013] Furthermore, the another polyolefin-based film is a biaxially stretched polyethylene film, a uniaxially stretched polyethylene film, a non-stretched polyethylene film, or a biaxially stretched polypropylene film.
[0014] Furthermore, the high water-resistant aluminum-plated polyethylene film has a water vapor transmission rate of <1.0 g / m 2 .day.1atm.
[0015] Furthermore, the single polyolefin aluminum-plated composite film has a water vapor transmission rate of <0.5 g / m2 .day.1atm aluminized composite film.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0017] 1. A high water-resistant aluminum-plated composite film made of a single polyolefin material. A high water-resistant aluminum-plated composite film made of a single polyolefin material can be obtained by using a high water-resistant aluminum-plated polyethylene film as the main structure of a single polyolefin material composite packaging film. The high water-resistant aluminum-plated polyethylene film has high water-resistant performance, which improves the overall water-resistant performance of the composite film and solves the problem that the existing single polyolefin material packaging composite film has poor water-resistant performance and limits the application scope of the single polyolefin material packaging composite film.
[0018] 2. In the utility model, the polyolefin film is compounded with the high water-resistance aluminum-coated polyethylene film to form a double-layer high water-resistance single-type polyolefin material packaging composite film, and the water-resistance performance is equivalent to the existing three-layer aluminum-coated single-type polyolefin material composite packaging film. Therefore, the double-layer single-type polyolefin material packaging composite film of the utility model can directly replace the existing three-layer aluminum-coated structure material composite packaging film, reducing the production cost of the composite packaging film, meeting the single material structure requirements, and contributing to environmental protection and recyclability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work, including:
[0020] Figure 1 It is a schematic diagram of a double-layer structure of an aluminum-plated composite film made of a single polyolefin material;
[0021] Figure 2 This is a schematic diagram of the structure of the high water-resistance aluminum-plated polyethylene film of the utility model;
[0022] Markings in the figure: 1-high water-resistant aluminum-plated polyethylene film, 2-another polyolefin film, 11-aluminum layer, 12-functional film. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0025] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0026] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0027] Example 1
[0028] like Figure 1 , Figure 2 As shown, a preferred embodiment of the utility model provides a high water-resistance aluminum-plated composite film of a single polyolefin material, including a high water-resistance aluminum-plated polyethylene film 1, wherein the high water-resistance aluminum-plated polyethylene film 1 includes an aluminum layer 11 and a functional film 12 provided with an aluminum layer, wherein the functional film 12 is a high water-resistance polyethylene aluminum-plated base film, and the aluminum layer 11 is attached to the aluminum layer of the functional film 12 to form the high water-resistance aluminum-plated polyethylene film 1. The thickness of the aluminum layer 11 is 300-600 angstroms. The thickness of the functional film is 20-120um. The functional film 12 includes at least a three-layer film structure. The high water-resistance aluminum-plated polyethylene film 1 has a water vapor permeability of <1.0g / m 2 .day.1atm.
[0029] The utility model uses a high water-resistance aluminum-coated polyethylene film as the main structural material of a high water-resistance single-type polyolefin material packaging composite film, and can obtain a high water-resistance single-type polyolefin aluminum-coated composite film. The utility model utilizes the high water-resistance performance of the high water-resistance aluminum-coated polyethylene film to improve the overall water-resistance performance of the composite film, and solves the problem that the existing single-type polyolefin material packaging composite film has poor water-resistance, which limits the application scope of the single-type polyolefin material packaging composite film.
[0030] In this embodiment, the aluminum-plated layer of the highly water-resistant polyethylene aluminum-plated base film can be made of polarity-modified polyethylene.
[0031] Example 2
[0032] In this embodiment, based on the embodiment 1, the aluminized composite film of a single polyolefin material with high water resistance also includes another polyolefin base film 2, and the aluminized polyethylene film 1 with high water resistance is combined with the polyolefin film 2 to form an aluminized composite film of a single polyolefin material with high water resistance. The polyolefin film 2 is a biaxially stretched polyethylene film or a uniaxially stretched polyethylene film or a non-stretched polyethylene film or a biaxially stretched polypropylene film. The aluminized composite film of a single polyolefin material has a water vapor permeability of <0.5g / m 2 .day.1atm aluminized composite film.
[0033] By using the high water-resistant single polyolefin material aluminum-plated composite film involved in the utility model, the original BOPP / VMPET / PE, BOPP / VMBOPP / PE three-layer structure can be converted into a single PO structure BOPP / VMPE; in addition, the utility model can also realize a new high water-resistant single polyethylene composite structure, including BOPE / VMPE, MDOPE / VMPE, and non-stretched PE / VMPE.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A high water-resistant aluminum-plated composite membrane made of a single polyolefin material. Features: The invention comprises a high water-resistance aluminum-plated polyethylene film (1), wherein the high water-resistance aluminum-plated polyethylene film (1) comprises an aluminum layer (11) and a functional film (12) provided with an aluminum-plated layer, wherein the functional film (12) is a high water-resistance polyethylene aluminum-plated base film, and the aluminum layer (11) is attached to the aluminum-plated layer of the functional film (12) to form the high water-resistance aluminum-plated polyethylene film (1).
2. The aluminum-plated composite membrane made of a single polyolefin material with high water resistance according to claim 1, Features: It also includes another polyolefin film (2), wherein the high water-resistance aluminum-plated polyethylene film (1) and the polyolefin film (2) are composited to form a single high water-resistance aluminum-plated composite film made of polyolefin material.
3. The aluminum-plated composite film made of a single polyolefin material according to claim 1, Features: The thickness of the aluminum layer (11) is 300-600 angstroms.
4. The aluminum-plated composite film made of a single polyolefin material according to claim 1, Features: The thickness of the functional film (12) is 20-120 um.
5. The aluminum-plated composite film made of a single polyolefin material according to claim 4, Features: The functional film (12) comprises at least a three-layer film structure.
6. The aluminum-plated composite film made of a single polyolefin material according to claim 2, Features: The single polyolefin-based film (2) is a biaxially stretched polyethylene film, a uniaxially stretched polyethylene film, a non-stretched polyethylene film, or a biaxially stretched polypropylene film.
7. The aluminum-plated composite film made of a single polyolefin material according to claim 1, Features: The high water-resistant aluminum-plated polyethylene film (1) has a water vapor transmission rate of <1.0 g / m 2 .day.1atm.
8. The aluminum-plated composite film made of a single polyolefin material according to claim 2, Features: The aluminum-plated composite film made of a single polyolefin material has a water vapor transmission rate of <0.5 g / m 2 .day.1atm aluminized composite film.