Low odor environment-friendly BOPP film

Abstract

The utility model discloses a kind of low odor environmental protection type BOPP film, it is related to BOPP film technical field, film main body includes BOPP base material, and the upper surface of base material is equipped with anti ultraviolet agent, and lower surface is equipped with antioxidant;Base material inside is equipped with multilayer co-extrusion layer, co-extrusion layer is sequentially arranged from top to bottom by gas barrier layer, moisture barrier layer, high temperature resistant layer, oil resistant layer laminated composition, each functional layer thickness is consistent;Multilayer co-extrusion layer is formed by co-extrusion composite, and film base material uses polylactic acid PLA biodegradable material to replace part or all petrochemical raw materials.The utility model is through multilayer function composite structure, and simultaneously realizes gas barrier, moisture barrier, high temperature resistant, oil resistant performance;PLA is biodegradable, reduces film smell, improves environmental protection, solves the defect that traditional BOPP film environmental protection is poor, barrier heat resistance oil resistance performance is insufficient, applicable to food, daily chemical, electronic and other packaging scenarios.

Description

Technical Field

[0001] This utility model relates to the field of BOPP film technology, specifically to a low-odor, environmentally friendly BOPP film. Background Technology

[0002] BOPP film is an abbreviation for Biaxially Oriented Polypropylene, an important flexible packaging material. The production of BOPP film involves first passing the melt of high molecular weight polypropylene through a narrow die head to form sheets or thick films, and then stretching them simultaneously or separately in two opposite directions (longitudinal and transverse) at a specific temperature and set speed in a dedicated stretching machine. The film is then produced by appropriate cooling or heat treatment or special processing (such as corona treatment, coating, etc.).

[0003] In the existing technology, ordinary BOPP film has problems with poor environmental protection and poor performance in terms of gas barrier, moisture barrier, high temperature resistance, and oil resistance. Summary of the Invention

[0004] This invention provides a low-odor, environmentally friendly BOPP film to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-odor, environmentally friendly BOPP film, comprising an integral device body, the integral device body including a BOPP film, an anti-ultraviolet agent disposed on the outer top surface of the BOPP film, an antioxidant disposed on the outer bottom surface of the BOPP film, and multiple co-extruded layers disposed inside the BOPP film, the multiple co-extruded layers including a gas barrier layer and an oil-resistant layer, wherein the gas barrier layer is located at the top of the multiple co-extruded layers, and the oil-resistant layer is located at the bottom of the multiple co-extruded layers, a high-temperature resistant layer is disposed on the outer top of the oil-resistant layer, a moisture barrier layer is disposed on the outer top of the high-temperature resistant layer, and a gas barrier layer is disposed on the outer top of the moisture barrier layer.

[0006] Furthermore, the gas barrier layer and the moisture barrier layer disposed inside the multilayer co-extruded layer have the same size and thickness.

[0007] Furthermore, the moisture-proof layer and the high-temperature resistant layer disposed inside the multilayer co-extruded layer have the same size and thickness.

[0008] Furthermore, the high-temperature resistant layer and the oil-resistant layer inside the multilayer co-extruded layer have the same size and thickness.

[0009] Furthermore, the multilayer co-extruded layer employs multilayer co-extrusion technology to co-extrude and composite resin layers with different properties, forming a BOPP film with a multilayer structure.

[0010] Furthermore, the BOPP film uses PLA (polylactic acid) biodegradable material to replace part or all of the petrochemical raw materials.

[0011] Compared with the prior art, this utility model provides a low-odor, environmentally friendly BOPP film with the following beneficial effects: 1. This low-odor, environmentally friendly BOPP film comprises BOPP film, UV stabilizer, multilayer co-extruded layers, gas barrier layer, moisture barrier layer, high-temperature resistant layer, oil-resistant layer, and antioxidant. The gas barrier layer and moisture barrier layer within the multilayer co-extruded layers have the same size and thickness. Similarly, the moisture barrier layer and the high-temperature resistant layer within the multilayer co-extruded layers have the same size and thickness. Furthermore, the multilayer co-extruded layers utilize multilayer co-extrusion technology, co-extruded resin layers with different properties to form a multilayered BOPP film. This allows the gas barrier layer to effectively prevent the permeation of gases (such as oxygen and nitrogen), thus maintaining the stability of the internal environment of the packaging. This is particularly important for products requiring long-term storage and sensitive to gases (such as food and pharmaceuticals). The moisture barrier layer prevents moisture from permeating the film, keeping the packaging dry, which is crucial for products with high moisture resistance requirements (such as electronic products and precision instruments). The high-temperature resistant layer enhances the BOPP film's performance in high-temperature environments. The stability of BOPP film under high temperatures is crucial to prevent deformation, melting, or degradation. This is especially important for packaging materials that need to be used under high-temperature conditions (such as retort pouches and microwave-safe food packaging). The oil-resistant layer prevents the penetration and contamination of oily substances, maintaining the cleanliness of the packaging interior and the quality of the product. This is critical for packaging that comes into contact with oily products (such as edible oil packaging and fast food packaging). When BOPP film uses biodegradable materials such as PLA (polylactic acid) to replace some or all of the petrochemical raw materials, the waste from biodegradable BOPP film can return to the natural cycle, harmonizing with the ecosystem and contributing to the development of a circular economy. Biodegradable materials such as PLA are derived from renewable resources, such as corn starch, and can be decomposed by microorganisms in the natural environment, ultimately converting into carbon dioxide and water without causing environmental pollution. Replacing petrochemical raw materials makes the waste disposal of BOPP film more environmentally friendly, reducing the environmental pollution problems caused by landfill and incineration. This effectively solves the problems of poor environmental performance and inadequate gas barrier, moisture barrier, high-temperature resistance, and oil resistance of ordinary BOPP film. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged schematic diagram of the internal structure of the multilayer co-extruded layer of this utility model; Figure 3 This is a schematic diagram of the bottom outer structure of the BOPP film of this utility model.

[0013] In the diagram: 1. Main body of the overall device; 2. BOPP film; 3. UV stabilizer; 4. Multi-layer co-extruded layer; 5. Gas barrier layer; 6. Moisture barrier layer; 7. High temperature resistant layer; 8. Oil resistant layer; 9. Antioxidant. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model discloses a low-odor, environmentally friendly BOPP film. Specifically, a low-odor, environmentally friendly BOPP film includes an overall device body 1, which includes a BOPP film 2. An anti-UV agent 3 is disposed on the top outer surface of the BOPP film 2, and an antioxidant 9 is disposed on the bottom outer outer surface of the BOPP film 2. Multiple co-extruded layers 4 are disposed inside the BOPP film 2. The multiple co-extruded layers 4 include a gas barrier layer 5 and an oil-resistant layer 8, wherein the gas barrier layer 5 is located at the top of the multiple co-extruded layers 4, and the oil-resistant layer 8 is located at the bottom of the multiple co-extruded layers 4. A high-temperature resistant layer 7 is disposed on the top outer surface of the oil-resistant layer 8, a moisture barrier layer 6 is disposed on the top outer surface of the high-temperature resistant layer 7, and a gas barrier layer 5 is disposed on the top outer surface of the moisture barrier layer 6.

[0016] In this embodiment, the gas barrier layer 5 and the moisture barrier layer 6 inside the multilayer co-extruded layer 4 have the same size and thickness. The moisture barrier layer 6 inside the multilayer co-extruded layer 4 has the same size and thickness as the high temperature resistant layer 7 inside the multilayer co-extruded layer 4. The high temperature resistant layer 7 inside the multilayer co-extruded layer 4 has the same size and thickness as the oil resistant layer 8 inside the multilayer co-extruded layer 4. The multilayer co-extruded layer 4 adopts multilayer co-extrusion technology to co-extrude and composite resin layers with different properties to form a BOPP film 2 with a multilayer structure.

[0017] Specifically, the gas barrier layer 5 effectively prevents the permeation of gases (such as oxygen and nitrogen), thereby maintaining the stability of the internal environment of the packaging. This is especially important for products that need to be stored for a long time and are sensitive to gases (such as food and medicine). The moisture barrier layer 6 prevents moisture from permeating the film and keeps the inside of the packaging dry. This is crucial for products with high moisture protection requirements (such as electronic products and precision instruments). The high-temperature resistant layer 7 improves the stability of the BOPP film 2 in high-temperature environments and prevents it from deforming, melting, or degrading due to high temperatures. This is especially important for packaging materials that need to be used under high-temperature conditions (such as retort pouches and microwave-safe food packaging). The oil-resistant layer 8 prevents the penetration and contamination of oily substances, maintaining the cleanliness of the inside of the packaging and the quality of the product. This is crucial for packaging that needs to come into contact with oily products (such as edible oil packaging and fast food packaging).

[0018] In this embodiment, BOPP film 2 uses PLA (polylactic acid) biodegradable material to replace part or all of the petrochemical raw materials.

[0019] Specifically, the waste from biodegradable BOPP film 2 can return to the natural cycle, harmonize with the ecosystem, and help promote the development of the circular economy. Biodegradable materials such as PLA are derived from renewable resources, such as corn starch, and can be decomposed by microorganisms in the natural environment, eventually turning into carbon dioxide and water without causing environmental pollution. After replacing petrochemical raw materials, the waste treatment of BOPP film 2 is more environmentally friendly, reducing the environmental pollution problems caused by landfill and incineration.

[0020] In summary, this low-odor, environmentally friendly BOPP film, when used with the main body 1 of the integrated device, allows the UV stabilizer 3 to absorb or reflect ultraviolet rays when the BOPP film 2 has an outer top surface covered with an anti-UV agent 3 and an antioxidant 9 to be applied to the outer bottom surface of the BOPP film 2. This protects the BOPP film 2 from UV damage, helping to extend its service life and preventing aging, fading, or degradation due to UV exposure. The antioxidant 9 slows down the aging and degradation process of the BOPP film 2 due to oxidation, further extending its service life. This is particularly important for packaging materials intended for long-term storage. The gas barrier layer 5 is also provided within the multilayer co-extruded layer 4. The moisture barrier layer 6 inside the multilayer co-extruded layer 4 has the same size and thickness as the high-temperature resistant layer 7 inside the multilayer co-extruded layer 4, and the high-temperature resistant layer 7 inside the multilayer co-extruded layer 4 has the same size and thickness as the oil-resistant layer 8 inside the multilayer co-extruded layer 4. Furthermore, the multilayer co-extruded layer 4 employs multilayer co-extrusion technology, co-extruded and composites resin layers with different properties to form a multilayered BOPP film 2. This allows the gas barrier layer 5 to effectively prevent the permeation of gases (such as oxygen and nitrogen), thereby maintaining the stability of the internal environment of the packaging. This is particularly important for products that require long-term storage and are sensitive to gases (such as food and pharmaceuticals). 6. The BOPP film layer prevents moisture from penetrating and keeps the inside of the packaging dry, which is crucial for products with high moisture resistance requirements (such as electronic products and precision instruments). 7. The high-temperature resistant layer enhances the stability of the BOPP film 2 under high-temperature environments, preventing deformation, melting, or degradation due to high temperatures. This is especially important for packaging materials used under high-temperature conditions (such as retort pouches and microwave-safe food packaging). 8. The oil-resistant layer prevents the penetration and contamination of oily substances, maintaining the cleanliness of the packaging and the quality of the product. This is crucial for packaging products that come into contact with oily substances (such as edible oil packaging and fast food packaging). The use of biodegradable materials such as PLA (polylactic acid) to replace the BOPP film 2 is also important. Under conditions where some or all of the raw materials are petrochemical, the waste from biodegradable BOPP film 2 can return to the natural cycle, harmonizing with the ecosystem and contributing to the development of a circular economy. Biodegradable materials such as PLA are derived from renewable resources, such as corn starch, and can be decomposed by microorganisms in the natural environment, ultimately converting into carbon dioxide and water without causing environmental pollution. After replacing petrochemical raw materials, the waste treatment of BOPP film 2 is more environmentally friendly, reducing the environmental pollution problems caused by landfill and incineration. It effectively solves the problems of poor environmental protection function and poor gas barrier, moisture barrier, high temperature resistance, and oil resistance of ordinary BOPP film. Therefore, this utility model is a very practical product and is worth promoting and applying.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-odor, environmentally friendly BOPP film, comprising an integral device body (1), characterized in that: The main body (1) of the overall device includes a BOPP film (2). The outer top surface of the BOPP film (2) is provided with an anti-ultraviolet agent (3), and the outer bottom surface of the BOPP film (2) is provided with an antioxidant (9). The interior of the BOPP film (2) is provided with a multi-layer co-extruded layer (4). The multi-layer co-extruded layer (4) includes a gas barrier layer (5) and an oil-resistant layer (8). The gas barrier layer (5) is located at the top of the multi-layer co-extruded layer (4), and the oil-resistant layer (8) is located at the bottom of the multi-layer co-extruded layer (4). The outer top of the oil-resistant layer (8) is provided with a high-temperature resistant layer (7), the outer top of the high-temperature resistant layer (7) is provided with a moisture barrier layer (6), and the outer top of the moisture barrier layer (6) is provided with a gas barrier layer (5).

2. The low-odor, environmentally friendly BOPP film according to claim 1, characterized in that: The gas barrier layer (5) inside the multilayer co-extruded layer (4) has the same size and thickness as the moisture barrier layer (6) inside the multilayer co-extruded layer (4).

3. The low-odor, environmentally friendly BOPP film according to claim 1, characterized in that: The moisture barrier layer (6) inside the multilayer co-extruded layer (4) has the same size and thickness as the high temperature resistant layer (7) inside the multilayer co-extruded layer (4).

4. The low-odor, environmentally friendly BOPP film according to claim 1, characterized in that: The high-temperature resistant layer (7) inside the multilayer co-extruded layer (4) has the same size and thickness as the oil-resistant layer (8) inside the multilayer co-extruded layer (4).

5. The low-odor, environmentally friendly BOPP film according to claim 1, characterized in that: The multilayer co-extruded layer (4) adopts multilayer co-extrusion technology to co-extrude and composite resin layers with different properties to form a BOPP film (2) with a multilayer structure.

6. The low-odor, environmentally friendly BOPP film according to claim 1, characterized in that: The BOPP film (2) uses PLA polylactic acid biodegradable material to replace part or all of the petrochemical raw materials.

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