Easy-to-tear cover film for sealing plastic container loaded with aromatherapy and perfume and packaging structure made of easy-to-tear cover film

Abstract

The invention discloses an easy-to-tear cover film for sealing a plastic container loaded with aromatherapy and perfume and a packaging structure made of the easy-to-tear cover film, the easy-to-tear cover film is composed of a sealing layer and a breathable layer, the sealing layer is formed by compounding a PET film, an aluminum foil and a PET film, the breathable layer is a three-layer co-extrusion PE microporous film, the sealing layer is bonded with the outer layer of the breathable layer, and the outer layer of the breathable layer is bonded with the aluminum foil. The binding force between the sealing layer and the outer layer of the breathable layer is larger than that between the outer layer of the breathable layer and the middle layer of the breathable layer, and the binding force between the sealing layer and the outer layer of the breathable layer is smaller than that between the middle layer of the breathable layer and the inner layer of the breathable layer, so that an easy-to-tear structure is formed; meanwhile, the binding force between the sealing layer and the outer layer of the breathable layer is smaller than the binding force between the inner layer of the breathable layer and the plastic container. The invention perfectly solves the sealing problem of aromatherapy (perfume) products in the production, manufacture, transportation and sales processes, and also can ensure the safety protection and the aroma slow release function of aromatherapy in the use process.

Description

Technical Field

[0001] The present invention relates to the technical field of special film production, and particularly to an easily tearable cover film for sealing plastic containers loaded with aromatherapy and perfume, and a packaging structure made thereof. Background Art

[0002] With the improvement of people's living standards and the demand for pursuing a high-quality environmental atmosphere, aromatherapy (perfume) products have entered thousands of households. Aromatherapy (perfume) products are widely used in central air-conditioning air supply systems, bathrooms, and cars. Aromatherapy (perfume) products are very prominent in application scenarios such as removing mildew smell and peculiar smell, and are well received by the majority of consumers pursuing a quality life, and the market demand is strong.

[0003] As aromatherapy (perfume) products enter thousands of households, the drawbacks of the packaging and aroma slow-release methods of aromatherapy (perfume) products are also very obvious. At present, the aroma slow-release method of aromatherapy (perfume) products is to let it volatilize naturally in an open manner or use a breathable rod for slow release. At the same time, the potential safety hazards brought by these two application methods are very prominent. During the use process in cars and home environments, aromatherapy (perfume) products often tip over, causing spills and pollution, bringing trouble and bad user experiences to consumers, and seriously affecting the expansion of the consumer market of aromatherapy (perfume) products.

[0004] A breathable sealing film refers to a sealing film with breathability, which is mainly used for packaging products such as food, cosmetics, aromatherapy, and medicine. Its functions are as follows: 1. Moisture-proof: The breathable sealing film can effectively prevent the product from getting wet and avoid the influence of microorganisms and chemical changes on the product.

[0005] 2. Fresh-keeping: The breathable sealing film has good fresh-keeping performance, can extend the shelf life of the product, and keep the freshness and nutritional components of the product.

[0006] 3. Breathability: The breathable sealing film can allow the air inside the package to exchange with the outside air, so as to maintain the oxygen-rich condition inside the package, which is suitable for packaging products that require breathability.

[0007] The breathable sealing film can only solve the breathing problem of aromatherapy (perfume) products during the use process, but cannot solve the sealing problem during the production, manufacturing, transportation, and sales processes at the same time. Aromatherapy (perfume) products urgently need a sealing film that can not only seal but also ensure the aroma slow-release function during the use process. Summary of the Invention

[0008] The purpose of the present invention is to provide an easily tearable cover film for sealing plastic containers loaded with aromatherapy and perfume, and a packaging structure made thereof, which perfectly solves the sealing during the production, manufacturing, transportation, and sales processes of aromatherapy (perfume) products, and can also ensure the safety protection and aroma slow-release function of aromatherapy during the use process.

[0009] The technical solution adopted by the present invention to solve its technical problems is as follows: A tearable cover film for sealing a plastic container loaded with aromatherapy and perfume, which is composed of a sealing layer and a breathable layer. The sealing layer is composed of a composite of PET film + aluminum foil + PET film. The breathable layer is a three-layer co-extruded PE microporous film. The outer layer formula of the three-layer co-extruded PE microporous film is: 100 kg of polybutene-1, 2-5 kg of slip agent, and 1-3 kg of antiblocking agent; the middle layer formula of the three-layer co-extruded PE microporous film is: 40-50 kg of LLDPE, 50-60 kg of LDPE, and 1-3 kg of slip agent; the inner layer formula of the three-layer co-extruded PE microporous film is: 50-60 kg of LLDPE, 40-50 kg of MLLDPE, 2-5 kg of slip agent, and 1-3 kg of antiblocking agent; The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is greater than the bonding force between the outer layer of the breathable layer and the middle layer of the breathable layer, and the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the middle layer of the breathable layer and the inner layer of the breathable layer, thus forming a tearable structure; at the same time, the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the inner layer of the breathable layer and the plastic container.

[0010] Through in-depth research on the manufacturing, transportation, and use processes of aromatherapy (perfume) products, the present invention has developed a cover film structure. The aromatherapy material is filled or filled in a blister container. After heat-sealing with the cover film, it is ensured that the aromatherapy (perfume) product maintains a good sealing state during the manufacturing, transportation, and sales processes. When the consumer uses it, with a gentle tear, it is very easy to tear off the protective layer and retain the breathable layer film; the film of the breathable layer can not only ensure that the aromatherapy (perfume) product will not be spilled and polluted due to overturning during the use process, but also ensure the slow release of the aroma. The tearable aromatherapy breathable structure cover film perfectly solves the sealing of aromatherapy (perfume) products during the production, manufacturing, transportation, and sales processes, and can also ensure the safety protection and aroma slow release function of aromatherapy during the use process.

[0011] The cover film of the present invention is composed of a sealing layer and a breathable layer, and has both sealing and breathable functions at the same time. After the cover film seals the plastic container loaded with aromatherapy and perfume, under the action of the sealing layer, it has a complete sealing function during the production, manufacturing, transportation, and sales processes. When it is necessary to use it, by tearing the cover film, it is easy to tear off the outer layer of the sealing layer + breathable layer from the package, while the inner layer and middle layer of the breathable layer still remain in the sealed state, which can not only prevent the liquid inside from leaking out, but also allow air to pass through and release the fragrance. The same film simultaneously realizes the sealing during the production, manufacturing, transportation, and sales processes, and can also ensure the safety protection and aroma slow release function of aromatherapy during the use process.

[0012] In a conventional three-layer co-extruded PE microporous membrane, the bonding force between the three layers is very strong and it cannot be separated into individual layers. In the production process of the present invention, the inventor misconfigured part of the formula for the three-layer co-extruded PE microporous membrane. It was found that the misconfigured formula made the individual outer layer of the three-layer co-extruded PE microporous membrane easily detachable. Based on the misconfigured formula and taking advantage of this characteristic, after further bonding and sealing the membrane, the formed composite membrane was found to be particularly suitable for solving the packaging problem of liquid aromatherapy (perfume) products. At the same time, it achieved sealing during the production, manufacturing, transportation, and sales processes, and could also ensure safety protection and the aroma slow-release function of the aromatherapy during use. Moreover, the processing of a single membrane is simple, and the loading container for the composite aromatherapy (perfume) product is also simple, only requiring simple heat-press lamination.

[0013] The material of the plastic container is selected from one of PVC, PET, PP, and polystyrene.

[0014] The LLDPE model is 2045.11G, the LDPE model is 2426H, and the MLLDPE model is SP0510.

[0015] The weight ratio of the three materials of the three-layer co-extruded PE microporous membrane is: 25 - 30% for the outer layer, 20 - 25% for the middle layer, and 45 - 55% for the inner layer.

[0016] The preparation method of the three-layer co-extruded PE microporous membrane is as follows: It is produced by a three-layer co-extrusion blown film machine. The preparation raw materials for the outer layer, middle layer, and inner layer are respectively fed into the screw extruders for the outer layer, middle layer, and inner layer for melting and plasticizing, and then transported to the die head. After extrusion and blowing, a film bubble is obtained. After the film bubble is cooled by air cooling, it passes through a stabilizing ring, a chevron stack, and is rotated by an upper traction. After the film bubble is flattened, it is detected, trimmed, corona-treated, and wound up to obtain the three-layer co-extruded PE microporous membrane.

[0017] For melting and plasticizing in the screw extruders of the outer layer, middle layer, and inner layer, six-zone heating is adopted. The heating temperature range for the outer layer is 170 - 200°C, the heating temperature range for the middle layer is 145 - 160°C, and the heating temperature range for the inner layer is 145 - 160°C.

[0018] The heating temperature range of the die head is 185 - 190°C.

[0019] An aromatherapy and perfume packaging structure includes a packaging container made of a plastic material and a tearable cover film. An extended handle is provided at the opening of the packaging container. The shape of the tearable cover film is adapted to the opening of the packaging container and the extended handle. The tearable cover film is heat-press laminated to the opening of the packaging container and the end of the extended handle connecting the opening of the packaging container. The tearable cover film and the main body part of the extended handle are overlapped to form a tearable part.

[0020] The tearable cover film is heat-pressed and sealed to the opening part of the containing container, but it is not heat-pressed at the extended handle main body part, thus forming a tear part of the tearable cover film. The tear part is a completed composite film structure. When in use, by tearing the tear part, the outer layer of the tearable cover film at the heat-pressed joint part comes off and is torn off together with the sealing layer, while the middle and inner composite film layers of the breathable layer remain sealed at the opening, playing the functions of safety protection and slow release of the aroma of the aromatherapy.

[0021] The tearable cover film is composed of a sealing layer and a breathable layer. The sealing layer is composed of a composite of PET film + aluminum foil + PET film. The breathable layer is a three-layer co-extruded PE microporous film. The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is greater than the bonding force between the outer layer of the breathable layer and the middle layer of the breathable layer, and the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the middle layer of the breathable layer and the inner layer of the breathable layer, thus forming a tearable structure. At the same time, the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the inner layer of the breathable layer and the containing container.

[0022] The blister material is one of PVC, PET, PP, and polystyrene.

[0023] The beneficial effects of the present invention are that the same film realizes the sealing during the production, manufacturing, transportation, and sales processes, and can also ensure the functions of safety protection and slow release of the aroma of the aromatherapy during the use process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the tearable cover film of the present invention; Figure 2 is a schematic diagram of a packaging structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following are specific examples to further illustrate the technical solutions of the present invention.

[0026] In the present invention, unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the following examples are all conventional methods in the art unless otherwise specified.

[0027] The model of the slip agent: 10090-K, and the model of the anti-blocking agent: 10063-K, both are purchased from Anpei Color Masterbatch Manufacturing (Shanghai) Co., Ltd.

[0028] Example 1: As Figure 1As shown in the figure, a tear - off lid film for sealing a plastic container filled with aromatherapy and perfume is composed of a sealing layer and a breathable layer 11. The sealing layer is composed of a PET film 12 (thickness 50 microns) + an aluminum foil 13 (thickness 20 microns) + a PET film (thickness 12 microns) laminated together. The breathable layer (thickness 80 microns) is a three - layer co - extruded PE microporous film. The outer layer formula of the three - layer co - extruded PE microporous film is: 100 kg of polybutene - 1 (PB0110M), 2 kg of slip agent, and 1 kg of antiblocking agent. The middle layer formula of the three - layer co - extruded PE microporous film is: 40 kg of LLDPE (2045.11G), 60 kg of LDPE (2426H), and 1 kg of slip agent. The inner layer formula of the three - layer co - extruded PE microporous film is: 50 kg of LLDPE, 50 kg of MLLDPE (SP0510), 2 kg of slip agent, and 1 kg of antiblocking agent. The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding strength between the sealing layer and the outer layer of the breathable layer is greater than the bonding strength between the outer layer and the middle layer of the breathable layer, and the bonding strength between the sealing layer and the outer layer of the breathable layer is less than the bonding strength between the middle layer and the inner layer of the breathable layer, thus forming a tear - off structure. At the same time, the bonding strength between the sealing layer and the outer layer of the breathable layer is less than the bonding strength between the inner layer of the breathable layer and the plastic container.

[0029] The material of the plastic container is PVC.

[0030] The preparation method of the three - layer co - extruded PE microporous film is as follows: The weight ratio of the three layers of materials of the three - layer co - extruded PE microporous film is: 25% for the outer layer, 20% for the middle layer, and 55% for the inner layer. It is produced by a three - layer co - extrusion blown - film machine. The preparation raw materials of the outer layer, middle layer, and inner layer are respectively fed into the screw extruders of the outer layer, middle layer, and inner layer for melting and plasticizing, and then transported to the die head. After extrusion and blowing, a film bubble is obtained. After the film bubble is cooled by air cooling, it passes through a stabilizing ring, a chevron stack, and is rotated by an upper traction. After the film bubble is flattened, it is detected, trimmed, corona - treated, and wound up to obtain the three - layer co - extruded PE microporous film.

[0031] For melting and plasticizing in the screw extruders of the outer layer, middle layer, and inner layer, six - zone heating is used. The heating temperature of the outer layer is 170℃, 185℃, 190℃, 190℃, 195℃, 200℃. The heating temperature of the middle layer is 145℃, 150℃, 150℃, 155℃, 155℃, 160℃. The heating range of the inner layer is 145℃, 150℃, 150℃, 155℃, 155℃, 160℃. The die head uses three - zone heating with a temperature range of 185℃, 188℃, 190℃. The blow - up ratio is 1.7. The resin pressure of the outer layer (the pressure for transporting the melt) is 16 Mpa, the resin pressure of the middle layer is 16 Mpa, and the resin pressure of the inner layer is 17 Mpa.

[0032] Example 2: An easily tearable cover film for sealing a plastic container loaded with aromatherapy and perfume, which is composed of a sealing layer and a breathable layer. The sealing layer is composed of a PET film (thickness 50 microns) + an aluminum foil (thickness 20 microns) + a PET film (thickness 12 microns) laminated together. The breathable layer (thickness 80 microns) is a three-layer co-extruded PE microporous film. The outer layer formula of the three-layer co-extruded PE microporous film is: 100 kg of polybutene-1 (PB0110M), 5 kg of slip agent, and 3 kg of antiblocking agent. The middle layer formula of the three-layer co-extruded PE microporous film is: 50 kg of LLDPE (2045.11G), 50 kg of LDPE (2426H), and 3 kg of slip agent. The inner layer formula of the three-layer co-extruded PE microporous film is: 60 kg of LLDPE, 40 kg of MLLDPE (SP0510), 5 kg of slip agent, and 3 kg of antiblocking agent. The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding force between the sealing layer and the outer layer of the breathable layer is greater than the bonding force between the outer layer and the middle layer of the breathable layer, and the bonding force between the sealing layer and the outer layer of the breathable layer is less than the bonding force between the middle layer and the inner layer of the breathable layer, thus forming an easily tearable structure. At the same time, the bonding force between the sealing layer and the outer layer of the breathable layer is less than the bonding force between the inner layer of the breathable layer and the plastic container.

[0033] The material of the plastic container is polystyrene.

[0034] The preparation method of the three-layer co-extruded PE microporous film is as follows: The weight ratio of the three-layer materials of the three-layer co-extruded PE microporous film is: 30% for the outer layer, 20% for the middle layer, and 50% for the inner layer. It is produced by a three-layer co-extrusion blown film machine. The preparation raw materials of the outer layer, middle layer, and inner layer are respectively fed into the screw extruders of the outer layer, middle layer, and inner layer for melting and plasticizing, and then transported to the die head. After extrusion and blowing to obtain a film bubble, the film bubble is cooled by air cooling, passed through a stabilizing ring, a chevron arrangement, and then pulled and rotated upward. After flattening the film bubble, it is inspected, trimmed, corona treated, and wound up to obtain the three-layer co-extruded PE microporous film.

[0035] Melting and plasticizing in the screw extruders of the outer layer, middle layer, and inner layer are all carried out with six-zone heating. The heating temperature of the outer layer is 170°C, 185°C, 190°C, 190°C, 195°C, 200°C. The heating temperature of the middle layer is 145°C, 150°C, 150°C, 155°C, 155°C, 160°C. The heating range of the inner layer is 145°C, 150°C, 150°C, 155°C, 155°C, 160°C. The die head uses a three-zone heating temperature range of 185°C, 188°C, 190°C. The blow-up ratio is 1.7. The resin pressure of the outer layer is 16 Mpa, the resin pressure of the middle layer is 16 Mpa, and the resin pressure of the inner layer is 17 Mpa.

[0036] Example 3: An easily tearable lid film for sealing a plastic container loaded with aromatherapy and perfume, which is composed of a sealing layer and a breathable layer. The sealing layer is composed of a PET film (thickness 50 microns) + an aluminum foil (thickness 20 microns) + a PET film (thickness 12 microns) laminated together. The breathable layer (thickness 80 microns) is a three-layer co-extruded PE microporous film. The outer layer formula of the three-layer co-extruded PE microporous film is: 100 kg of polybutene-1 (PB0110M), 3 kg of slip agent, and 2 kg of antiblocking agent. The middle layer formula of the three-layer co-extruded PE microporous film is: 45 kg of LLDPE (2045.11G), 55 kg of LDPE (2426H), and 2 kg of slip agent. The inner layer formula of the three-layer co-extruded PE microporous film is: 55 kg of LLDPE, 45 kg of MLLDPE (SP0510), 3 kg of slip agent, and 2 kg of antiblocking agent. The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is greater than the bonding force between the outer layer and the middle layer of the breathable layer, and the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the middle layer and the inner layer of the breathable layer, thus forming an easily tearable structure. At the same time, the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the inner layer of the breathable layer and the plastic container.

[0037] The material of the plastic container is PET.

[0038] The preparation method of the three-layer co-extruded PE microporous film is as follows: The weight ratio of the three materials of the three-layer co-extruded PE microporous film is: 30% for the outer layer, 25% for the middle layer, and 45% for the inner layer. It is produced by a three-layer co-extrusion blown film machine. The preparation raw materials of the outer layer, middle layer, and inner layer are respectively fed into the screw extruders of the outer layer, middle layer, and inner layer for melting and plasticizing, and then transported to the die head. After extrusion and blowing, a film bubble is obtained. After the film bubble is air-cooled, it passes through a stabilizing ring, a chevron arrangement, and is pulled and rotated upward. After the film bubble is flattened, it is inspected, trimmed, corona treated, and wound up to obtain a three-layer co-extruded PE microporous film.

[0039] Melting and plasticizing in the outer layer, middle layer, and inner layer screw extruders are all carried out by six-zone heating. The heating temperatures of the outer layer are 170 °C, 185 °C, 190 °C, 190 °C, 195 °C, 200 °C. The heating temperatures of the middle layer are 145 °C, 150 °C, 150 °C, 155 °C, 155 °C, 160 °C. The heating range of the inner layer is 145 °C, 150 °C, 150 °C, 155 °C, 155 °C, 160 °C. The die head is heated in three zones with a temperature range of 185 °C, 188 °C, 190 °C. The blow-up ratio is 1.7. The resin pressure of the outer layer is 16 Mpa, the resin pressure of the middle layer is 16 Mpa, and the resin pressure of the inner layer is 17 Mpa.

[0040] Example 4 As Figure 2A packaging structure for aromatherapy and perfume as shown, comprising a containing container 1 made of blister material (PVC) and a tearable lid film 2 prepared in Example 1. An extending handle 3 is provided on the opening of the containing container. The shape of the tearable lid film is adapted to the opening of the containing container and the extending handle. The tearable lid film is thermocompression bonded to the opening of the containing container and the end of the extending handle connecting the opening of the containing container to form a thermocompression bonding area 5. The tearable lid film is superposed with the main body part of the extending handle to form a tearing part 4.

[0041] Example 5 As Figure 2 A packaging structure for aromatherapy and perfume as shown, comprising a containing container made of blister material (polystyrene) and a tearable lid film prepared in Example 2. An extending handle is provided on the opening of the containing container. The shape of the tearable lid film is adapted to the opening of the containing container and the extending handle. The tearable lid film is thermocompression bonded to the opening of the containing container and the end of the extending handle connecting the opening of the containing container to form a thermocompression bonding area 5. The tearable lid film is superposed with the main body part of the extending handle to form a tearing part.

[0042] Example 6 As Figure 2 A packaging structure for aromatherapy and perfume as shown, comprising a containing container made of blister material (PET) and a tearable lid film prepared in Example 3. An extending handle is provided on the opening of the containing container. The shape of the tearable lid film is adapted to the opening of the containing container and the extending handle. The tearable lid film is thermocompression bonded to the opening of the containing container and the end of the extending handle connecting the opening of the containing container to form a thermocompression bonding area, and the tearable lid film is superposed with the main body part of the extending handle to form a tearing part.

[0043] Performance Test Report of Tearable Lid Film Product

[0044] The above-described embodiments are only a preferred solution of the present invention and do not impose any form of limitation on the present invention. There are other variants and modifications without exceeding the technical solutions described in the claims.

Claims

1. A tearable lid film for sealing a plastic container loaded with aromatherapy and perfume, characterized in that, It is composed of a sealing layer and a breathable layer. The sealing layer is composed of a composite of PET film + aluminum foil + PET film. The breathable layer is a three-layer co-extruded PE microporous film. The outer layer formula of the three-layer co-extruded PE microporous film is: 100 kg of polybutene-1, 2-5 kg of slip agent, and 1-3 kg of antiblocking agent. The middle layer formula of the three-layer co-extruded PE microporous film is: 40-50 kg of LLDPE, 50-60 kg of LDPE, and 1-3 kg of slip agent. The inner layer formula of the three-layer co-extruded PE microporous film is: 50-60 kg of LLDPE, 40-50 kg of MLLDPE, 2-5 kg of slip agent, and 1-3 kg of antiblocking agent. The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding force between the sealing layer and the outer layer of the breathable layer is greater than the bonding force between the outer layer and the middle layer of the breathable layer, and the bonding force between the sealing layer and the outer layer of the breathable layer is less than the bonding force between the middle layer and the inner layer of the breathable layer, thus forming an easily tearable structure. At the same time, the bonding force between the sealing layer and the outer layer of the breathable layer is less than the bonding force between the inner layer of the breathable layer and the plastic container.

2. The easy-to-tear cover film for sealing a plastic container filled with aromatherapy and perfume according to claim 1, characterized in that, The material of the plastic container is selected from one of PVC, PET, PP, and polystyrene.

3. The tearable cover film for sealing a plastic container loaded with aromatherapy and perfume according to claim 1, characterized in that, The LLDPE model is 2045.11G, the LDPE model is 2426H, and the MLLDPE model is SP0510.

4. A tearable lid film for sealing a plastic container containing aromatherapy and perfume according to claim 1, characterized in that, The weight ratio of the three-layer materials of the three-layer co-extruded PE microporous film is: 25-30% for the outer layer, 20-25% for the middle layer, and 45-55% for the inner layer.

5. The easy-to-tear lid film for sealing a plastic container loaded with aromatherapy and perfume according to claim 1 or 4, characterized in that, The preparation method of the three-layer co-extruded PE microporous film is as follows: It is produced by a three-layer co-extrusion blown film machine. The preparation raw materials of the outer layer, middle layer, and inner layer are respectively fed into the screw extruders of the outer layer, middle layer, and inner layer for melting and plasticizing, and then transported to the die head. After extrusion and blowing, a film bubble is obtained. After the film bubble is air-cooled, it passes through a stabilizing ring, a chevron arrangement, and is rotated by an upper traction. After the film bubble is flattened, it is detected, trimmed, corona-treated, and wound up to obtain a three-layer co-extruded PE microporous film.

6. The easy-to-tear cover film for sealing a plastic container loaded with aromatherapy and perfume according to claim 5, characterized in that, Melting and plasticizing in the outer layer, middle layer, and inner layer screw extruders are all carried out by six-zone heating. The heating temperature range of the outer layer is 170-200 °C, the heating temperature range of the middle layer is 145-160 °C, and the heating temperature range of the inner layer is 145-160 °C.

7. A tearable lid film for sealing a plastic container containing aromatherapy and perfume according to claim 5, characterized in that, The heating temperature range of the die head is 185-190 °C.

8. A packaging structure for aromatherapy and perfume, characterized in that, It includes a packaging container made of a thermoformed material and an easily tearable lid film. An extended handle is provided on the opening of the packaging container. The shape of the easily tearable lid film is adapted to the opening of the packaging container and the extended handle. The easily tearable lid film is thermocompression-bonded to the opening of the packaging container and the end of the extended handle connecting the opening of the packaging container. The easily tearable lid film and the main part of the extended handle are overlapped to form a hand-tearing part.

9. The packaging structure according to claim 8, wherein The tearable cover film is composed of a sealing layer and a breathable layer. The sealing layer is composed of a composite of PET film + aluminum foil + PET film. The breathable layer is a three-layer co-extruded PE microporous film. The outer layer of the sealing layer is bonded to the outer layer of the breathable layer. The bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is greater than the bonding force between the outer layer of the breathable layer and the middle layer of the breathable layer. The bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the middle layer of the breathable layer and the inner layer of the breathable layer, thereby forming a tearable structure. At the same time, the bonding force between the outer layer of the sealing layer and the outer layer of the breathable layer is less than the bonding force between the inner layer of the breathable layer and the container for holding.

10. The packaging structure according to claim 8, characterized in that, The blister material is one of PVC, PET, PP, and polystyrene.

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