High-barrier anti-puncture mask packaging composite film and mask packaging bag thereof

Abstract

The utility model discloses a high-barrier puncture-resistant facial mask packaging composite film and a facial mask packaging bag of the high-barrier puncture-resistant facial mask packaging composite film. The composite film is sequentially provided with a heat sealing layer, a first bonding layer, a barrier layer, a second bonding layer, a middle layer, a third bonding layer, a printing layer and a surface layer, wherein the heat sealing layer is a super-hydrophobic CPP (Chlorinated Polypropylene) film; the barrier layer is a BOPA (Biaxially Oriented Polyamide) enhanced aluminized film; the middle layer is a wet strength paper layer; the printing layer is a biaxially oriented EVOH nylon composite film; the surface layer is a hydrophobic moisture-resistant coating; the first bonding layer is a solvent-free two-component polyurethane glue layer, and the second bonding layer and the third bonding layer are biodegradable moisture reaction type hot melt adhesive layers. The mask packaging bag prepared from the composite film has excellent barrier performance, puncture resistance, tear resistance and heat sealing performance, permeation of oxygen, water vapor and other substances can be prevented, the phenomena of bag breaking, bag leakage and the like in the transportation process are prevented, the stability of the packaging internal environment is maintained, and therefore the packaging shelf life of the mask is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of facial mask packaging materials, specifically relating to a high-barrier, puncture-resistant facial mask packaging composite film and its packaging bag. Background Technology

[0002] Facial masks are a category of skincare products primarily used for skin hydration, but they also offer multiple functions such as moisturizing, nourishing, improving appearance, and deep cleansing. Compared to the elaborate decorative packaging of other skincare products, facial mask packaging focuses more on storage and protection. Facial mask packaging needs to have strong barrier properties, especially good corrosion resistance and flexibility, to minimize the possibility of physical or chemical reactions between the mask ingredients and the packaging, effectively ensuring the safety of the mask during transportation and storage.

[0003] Existing facial mask packaging films mostly use single materials or simple composite structures, resulting in insufficient oxygen and moisture barrier properties, leading to easy evaporation or oxidation of the essence. Meanwhile, while traditional aluminum foil packaging offers excellent barrier properties, it suffers from low flexibility, wrinkles easily, poor puncture resistance, and deficiencies in environmental friendliness and cost control; ordinary PE / CPP heat-sealing layers also lack sufficient barrier performance. Therefore, there is an urgent need for an environmentally friendly composite film structure that combines high barrier properties, flexibility, and reliable heat sealing. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a solution that addresses the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-barrier, puncture-resistant facial mask packaging composite film is provided, which is provided in sequence with a heat-sealing layer, a first adhesive layer, a barrier layer, a second adhesive layer, an intermediate layer, a third adhesive layer, a printing layer and a surface layer.

[0006] The heat-sealing layer is a superhydrophobic CPP film; the barrier layer is a BOPA-reinforced aluminized film; the intermediate layer is a wet-strength paper layer; the printing layer is a biaxially oriented EVOH nylon composite film; the surface layer is a hydrophobic and moisture-resistant coating; the first adhesive layer is a solvent-free two-component polyurethane adhesive layer; and the second and third adhesive layers are biodegradable moisture-reactive hot melt adhesive layers.

[0007] In a preferred embodiment of this utility model, the thickness of the heat-sealing layer is 60-90 micrometers.

[0008] In a preferred embodiment of this invention, the thickness of the barrier layer is 15 to 25 micrometers.

[0009] In a preferred embodiment of the present invention, the barrier layer includes a substrate layer, a base layer, and an aluminum plating layer, wherein the thickness of the aluminum plating layer is 500 to 1000 angstroms.

[0010] In a preferred embodiment of this utility model, the intermediate layer has a basis weight of 50-60 g / m³. 2 High-moisture-strength paper.

[0011] In a preferred embodiment of this utility model, the thickness of the printed layer is 15 to 25 micrometers.

[0012] In a preferred embodiment of the present invention, the printed layer includes an EVOH layer and nylon layers disposed on both sides of the EVOH layer. The outer side of the nylon layer is provided as a corona layer, and a printed surface is disposed on the surface of the corona layer on one side. The printed surface is bonded to the third adhesive layer.

[0013] In a preferred embodiment of this utility model, the thickness of the surface layer is 1.0 to 2.0 micrometers, and the surface layer is in contact with the non-printed surface of the printed layer.

[0014] This utility model also provides a high-barrier, puncture-resistant facial mask packaging bag, which is provided with a high-barrier, puncture-resistant facial mask packaging composite film as described above, or the bag is made of the high-barrier, puncture-resistant facial mask packaging composite film as described above, wherein the heat-sealing layer, the first adhesive layer, the barrier layer, the second adhesive layer, the intermediate layer, the third adhesive layer, the printing layer and the surface layer are arranged sequentially from the inside to the outside.

[0015] Compared with the prior art, this technical solution has the following advantages:

[0016] 1. This solution combines a multi-layer composite structure with a coating, making full use of the advantages of each thin film layer and coordinating and enhancing them to achieve good composite performance. It can meet various performance requirements of the mask packaging bag industry and solves the problems of poor barrier performance, poor puncture resistance, and poor barrier performance caused by thin aluminum layers that are prone to wrinkling in existing technologies.

[0017] 2. The heat-sealing layer is made of superhydrophobic and corrosion-resistant polypropylene film. Its excellent hydrophobic properties can prevent the liquid inside the mask from coming into large-area contact with the heat-sealing layer. At the same time, the heat-sealing layer has excellent corrosion resistance and a certain self-cleaning function, as well as excellent heat-sealing performance.

[0018] 3. The barrier layer uses a BOPA-enhanced aluminized film layer. Compared with traditional aluminum foil, the enhanced aluminized film maintains high barrier properties while improving flexibility, avoiding mechanical damage, and reducing costs.

[0019] 4. The middle layer is made of wet-strength paper, which not only has excellent wet tensile strength and good printability, but also does not contain organic chlorine, making it safe and environmentally friendly.

[0020] 5. The printing layer uses a composite film of biaxially oriented EVOH and nylon. This printing layer is co-extruded biaxially oriented composite, which is solvent-free, environmentally friendly, and has excellent mechanical properties, puncture resistance, and drop resistance. It also has excellent barrier properties. Combined with the barrier layer, it further improves the barrier performance of the product and solves the problem of decreased barrier performance caused by incomplete plating during aluminum plating.

[0021] 6. The surface layer uses a hydrophobic and moisture-resistant coating, which has the effect of preventing water vapor from entering and also preventing the liquid inside the mask from evaporating and escaping, thus maintaining the moisture of the mask itself. Attached Figure Description

[0022] Figure 1 This is a diagram showing the layer structure of the composite membrane in the embodiment.

[0023] Among them, 10-heat-sealing layer, 20-first adhesive layer, 30-barrier layer, 40-second adhesive layer, 50-intermediate layer, 60-third adhesive layer, 70-printing layer, and 80-top layer. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] This utility model discloses a high-barrier, puncture-resistant composite film for facial mask packaging. When used to manufacture facial mask packaging bags, it comprises, from the inside out, a heat-sealing layer, a first adhesive layer, a barrier layer, a second adhesive layer, an intermediate layer, a third adhesive layer, a printing layer, and a surface layer. The heat-sealing layer has a thickness of 60–90 micrometers; the barrier layer has a thickness of 15–25 micrometers; the aluminum plating layer in the barrier layer has a thickness of 500–1000 angstroms; and the intermediate layer has a basis weight of 50–60 g / m³. 2 The thickness of the printed layer is 15–25 micrometers; the printed layer is double-sided corona-treated, with the printed side in contact with the adhesive layer; the thickness of the surface layer is 1.0–2.0 micrometers, and the surface layer is in contact with the non-printed side of the printed layer. This composite film exhibits excellent performance and meets market demands. The term "inner" refers to the side in contact with the contents, and "outer" refers to the side away from the contents. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example

[0027] The high-barrier, puncture-resistant facial mask packaging composite film of this embodiment is provided with a heat-sealing layer 10, a first adhesive layer 20, a barrier layer 30, a second adhesive layer 40, an intermediate layer 50, a third adhesive layer 60, a printing layer 70, and a surface layer 80 in sequence.

[0028] The heat-sealing layer 10 is a superhydrophobic CPP film. In this embodiment, the heat-sealing layer 10 adopts the polypropylene film in Chinese Patent Publication No. CN206287592U, entitled "A Novel Superhydrophobic CPP Film," with a thickness of 60 micrometers. It has superhydrophobic properties, as well as certain self-cleaning and anti-corrosion functions. The polypropylene film has a three-layer structure, consisting of a heat-sealing functional layer, a core layer, and a corona layer from the inside out. The surface of the heat-sealing layer 10 is also provided with an uneven structure, which is arranged in an array to not only provide hydrophobicity but also improve the heat-sealing strength.

[0029] The barrier layer 30 is a BOPA-reinforced aluminized film. In this embodiment, the barrier layer 30 adopts the BOPA-reinforced aluminized film from Chinese Patent Publication No. CN110563987A, entitled "A BOPA-reinforced aluminized film and its preparation method", with a thickness of 15 micrometers. It has excellent flexibility and puncture resistance, as well as excellent barrier properties.

[0030] The intermediate layer 50 is a wet-strength paper layer, possessing excellent wet tensile strength and printability. In this embodiment, the intermediate layer 50 uses high-wet-strength paper as described in Chinese Patent Publication No. CN116289321A, entitled "A High-Wet-Strength Paper and Its Preparation Method," with a basis weight of 50 g / m². 2 It not only has excellent wet tensile strength and good printability, but also contains no organic chlorine, making it safe and environmentally friendly.

[0031] The printed layer 70 is a biaxially stretched EVOH nylon composite film. In this embodiment, the printed layer 70 adopts the biaxially stretched EVOH composite film from Chinese Patent Publication No. CN203221698U, entitled "A Biaxially Stretched EVOH Composite Film," which has a five-layer structure: a biaxially stretched first nylon layer, a biaxially stretched second nylon layer, a biaxially stretched EVOH layer, a biaxially stretched third nylon layer, and a biaxially stretched fourth nylon layer, with a thickness of 15 micrometers. This printed layer 70 is prepared using a biaxial stretching process, and the layers are not bonded together by an adhesive layer, exhibiting excellent mechanical properties and excellent barrier properties.

[0032] The surface layer 80 is a hydrophobic and moisture-barrier coating. In this embodiment, the surface layer 80 adopts the hydrophobic barrier coating in Chinese Patent Publication No. CN118325366A, "A Hydrophobic Barrier Coating Resistant to High Temperature and High Humidity and Its Preparation Method". The coating thickness is 1.0 micrometer, which not only has excellent hydrophobic barrier performance, but also exhibits excellent water vapor barrier performance under high temperature and high humidity conditions.

[0033] The first adhesive layer 20 is a solvent-free two-component polyurethane adhesive layer. The adhesive itself does not contain solvents, making it very environmentally friendly. In this embodiment, the first adhesive layer 20 is obtained using solvent-free two-component polyurethane adhesive of model WD8118A / B from Shanghai Kangda Chemical New Materials Co., Ltd., with a thickness of 1.5 micrometers. It has high bonding strength, is solvent-free, and environmentally friendly.

[0034] Both the second adhesive layer 40 and the third adhesive layer 60 are biodegradable moisture-reactive hot melt adhesives with a thickness of 2.5 μm. This embodiment uses a moisture-reactive hot melt adhesive obtained from Chinese Patent Publication No. CN103555254A, entitled "A Method for Preparing a Biodegradable Moisture-Reactive Hot Melt Adhesive," which features high bonding strength, solvent resistance, and heat resistance.

[0035] The composite film of this embodiment can be used to directly prepare mask packaging bags or to prepare mask packaging bags by combining with other film layers. The heat-sealing layer 10, the first adhesive layer 20, the barrier layer 30, the second adhesive layer 40, the intermediate layer 50, the third adhesive layer 60, the printing layer 70 and the surface layer 80 are arranged sequentially from the inside to the outside.

[0036] The performance of the composite film and packaging bag in this embodiment was tested, and the results are shown in the table below:

[0037] Table 1 Performance tests of composite films and packaging bags in the examples.

[0038] serial number project Example 1 Testing standards 1 Drop resistance test (bag) Unbroken GB / T 10004-2008 2 Puncture resistance ＞60N GB / T10004-2008 3 Oxygen permeability (25℃, 50%RH) <![CDATA[0.32cc / (m 2 *day)]]> ASTM F1927 4 Water vapor transmission rate (38℃, 90%RH) <![CDATA[1.00g / (m 2 ·24h)]]> GB / T 21529-2008 5 Heat sealing strength 45N / 15mm GB / T10004-2008

[0039] As can be seen from the table above, the high-barrier, puncture-resistant composite film and its packaging bag provided in this embodiment have excellent barrier properties, preventing the penetration of substances such as oxygen and water vapor, maintaining a stable internal environment, and thus extending the packaging period of the mask. Furthermore, the composite film has excellent puncture and tear resistance, preventing bag breakage and leakage during transportation. Simultaneously, the film also has excellent heat-sealing properties, keeping the mask moist during storage and sales. After multiple tests and comparisons, combined with the production cost of the composite film, it is clear that the composite film of this embodiment offers high cost-effectiveness and can be widely used in the field of high-performance mask packaging materials, particularly relating to a high-barrier, puncture-resistant composite film and its packaging bag.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-barrier, puncture-resistant facial mask packaging composite film, characterized by: The heat-sealing layer, the first adhesive layer, the barrier layer, the second adhesive layer, the intermediate layer, the third adhesive layer, the printing layer and the surface layer are sequentially arranged. The heat-sealing layer is a super-hydrophobic CPP film; the barrier layer is a BOPA reinforced aluminized film; the intermediate layer is a wet-strength paper layer; the printing layer is a biaxially-stretched EVOH nylon composite film; the surface layer is a hydrophobic moisture-resistant coating; the first adhesive layer is a solvent-free two-component polyurethane glue layer; and the second and third adhesive layers are biodegradable moisture-reactive hot melt adhesive layers.

2. A high barrier, puncture resistant facial mask packaging composite film according to claim 1, characterized in that: The thickness of the heat-sealing layer is 60-90 microns.

3. A high barrier, puncture resistant facial mask packaging composite film according to claim 1, characterized in that: The thickness of the barrier layer is 15-25 microns.

4. A high barrier, puncture resistant facial mask packaging composite film according to claim 3, characterized in that: The barrier layer comprises a substrate layer, a primer layer and an aluminized layer, wherein the thickness of the aluminized layer is 500-1000 angstroms.

5. A high barrier, puncture resistant facial mask packaging composite film according to claim 1, characterized in that: The intermediate layer is a high wet strength paper having a grammage of 50-60 g / m 2 2.

6. A high barrier, puncture resistant facial mask packaging composite film according to claim 1, characterized in that: The thickness of the printing layer is 15-25 microns.

7. A high barrier, puncture resistant facial mask packaging composite film according to claim 6, characterized in that: The printing layer comprises an EVOH layer and nylon layers arranged on both sides of the EVOH layer, and the outer side of the nylon layer is provided with a corona layer, wherein the surface of the corona layer on one side is provided with a printing surface, and the printing surface is attached to the third adhesive layer.

8. A high barrier, puncture resistant facial mask packaging composite film according to claim 1, characterized by: The thickness of the surface layer is 1.0-2.0 microns, and the surface layer is in contact with the non-printing surface of the printing layer.

9. A high-barrier, puncture-resistant, facial mask packaging bag, characterized by: A high-barrier puncture-resistant facial mask packaging composite film as claimed in any one of claims 1-8 is provided.

10. A high-barrier, puncture-resistant, facial mask packaging bag, characterized by: A bag is prepared from the high-barrier puncture-resistant facial mask packaging composite film as claimed in any one of claims 1-8, wherein the heat-sealing layer, the first adhesive layer, the barrier layer, the second adhesive layer, the intermediate layer, the third adhesive layer, the printing layer and the surface layer are sequentially arranged from the inside to the outside.

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