Repeatedly easy-to-peel material and double-cavity facial mask bag using the same

Abstract

The present application relates to the technical field of facial mask packaging materials, and in particular to a reusable peelable material and a double-chamber facial mask bag using the reusable peelable material. A double-chamber facial mask bag using the reusable peelable material is composited from top to bottom by a front transparent layer, a middle reusable peelable layer, and a back aluminum-plated layer, wherein the back aluminum-plated layer, the front transparent layer, and the back aluminum-plated layer form a first cavity and a second cavity, respectively, with the first cavity being located above the second cavity. The middle reusable peelable layer comprises the reusable peelable material, which enables the first cavity to be opened and pressed to seal, facilitating the injection of water into the first cavity. The water reacts with the refrigerant or heating agent in the first cavity to absorb or release heat, thereby cooling or heating the facial mask. The double-chamber facial mask bag using the reusable peelable material is not easily broken during the cooling or heating process, and does not require refrigeration or hot water, thereby improving the convenience of heating or cooling the bagged facial mask.

Description

Technical Field

[0001] The present application relates to the technical field of facial mask packaging materials, and in particular to a repeatedly easy-to-peel material and a double-cavity facial mask bag using the repeatedly easy-to-peel material. Background Art

[0002] Currently, the cold compress masks and hot compress masks on the market are applied by refrigerating the mask or heating it in hot water. It is inconvenient to use a refrigerator or hot water when using it. If you want to use a cold compress or hot compress mask for cold or hot compress when going out, it is difficult to achieve.

[0003] In order to improve the convenience of heating or cooling facial masks, refrigerants can be used to cool bagged facial masks, or heating agents can be used to heat bagged facial masks. However, how to use refrigerants or heating agents to heat or cool bagged facial masks more conveniently and quickly has become a new research direction for high-end facial masks and high-end facial mask packaging bags. Summary of the Invention

[0004] In order to solve the problem of how to use a refrigerant or a heating agent to heat or cool a bagged facial mask more conveniently and quickly, the present application provides a repeatedly easy-to-peel material and a double-cavity facial mask bag using the repeatedly easy-to-peel material.

[0005] In a first aspect, a repeatedly easy-to-release material is provided.

[0006] A repeatedly easy-to-peel material, comprising a heat-sealing layer, an intermediate layer and a corona layer from top to bottom;

[0007] The heat-sealing layer is prepared from LDPE, LLDPE and mLLDPE; the intermediate layer comprises one or more of a mixture of acrylic resin, acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer; and the surface tension of the corona layer after corona treatment is ≥40 dyn.

[0008] By adopting the above technical solution, the repeatedly easy-to-peel material has the characteristics of being easy to peel and press-sealable. When using it, the user peels off the easy-to-peel heat seal line, adds appropriate amount of water into the first cavity, and then presses the easy-to-peel heat seal line by hand to make the easy-to-peel heat seal line re-adhere.

[0009] The heat-sealing layer and the corona layer are provided in the repeatedly easy-to-peel material, so that the middle layer has a stronger bonding force with the upper and lower layers, so that the repeatedly easy-to-peel material can be better opened and pressed to seal, and the bag is not easy to break during use.

[0010] Preferably, the thickness ratio of the corona layer, the intermediate layer and the heat-sealing layer is (1-3): (1-5): (1-3).

[0011] By adopting the above technical solution, the thickness of the corona layer, the middle layer and the heat-sealing layer is optimized, and the formulas of the corona layer, the middle layer and the heat-sealing layer are matched, so that there is a strong bonding force between the middle layer and the other upper and lower layers, the repeatedly easy-to-peel material can be better realized by being easy to peel and press-seal, and the bag is not easy to break during use, thereby improving the convenience of using the double-cavity mask bag using the repeatedly easy-to-peel material.

[0012] Preferably, the heat-sealing layer is prepared from 10% to 30% of LDPE, 20% to 40% of LLDPE and 30% to 70% of mLLDPE, based on the mass percentage of the total mass of the heat-sealing layer;

[0013] The corona layer is prepared from 30% to 70% of LDPE and 70% to 30% of LLDPE based on the mass percentage of the total amount of the corona layer.

[0014] By adopting the above technical solution, the thickness of the corona layer, the middle layer and the heat-sealing layer is optimized, and the formulas of the corona layer, the middle layer and the heat-sealing layer are matched, so that there is a strong bonding force between the middle layer and the other upper and lower layers, the repeatedly easy-to-peel material can be better realized by being easy to peel and press-seal, and the bag is not easy to break during use, thereby improving the convenience of using the double-cavity mask bag using the repeatedly easy-to-peel material.

[0015] Preferably, the middle layer is 100% acrylic resin or a mixture of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer in a mass ratio of (3-7):1:1:2.

[0016] By adopting the above technical solution, the formula of the middle layer is optimized so that the middle layer has appropriate peeling force and viscosity, thereby realizing the easy-to-peel and press-to-seal functions of the repeatedly easy-to-peel material, reducing the bag breakage rate during use, and thus improving the convenience of using the double-cavity mask bag with the repeatedly easy-to-peel material.

[0017] Preferably, the intermediate layer further comprises hydrogen-containing silicone oil and vinyl silicone oil, the mass ratio of the hydrogen-containing silicone oil, vinyl silicone oil and ethylene-acrylate copolymer being 0.1:(1.5-2.0):1; the viscosity of the hydrogen-containing silicone oil is 40-100 mPa·s, and the hydrogen content is 1.1-4.2 mmol / g.

[0018] By adopting the above technical solution, an appropriate amount of vinyl silicone oil and hydrogen silicone oil is added to the middle layer, which improves the hydrophobicity of the middle layer, reduces the amount of water absorbed by the middle layer after contact with water, reduces the attenuation of the peeling force of the middle layer, and thereby reduces the possibility of the double-cavity mask bag using repeatedly easy-to-peel materials breaking when heating or cooling the mask.

[0019] Preferably, the intermediate layer further comprises a silane coupling agent; the mass ratio of the silane coupling agent to the ethylene-acrylate copolymer is (0.06-0.12):1.

[0020] By adopting the above technical solution, a silane coupling agent is added to the middle layer, which can promote the mixing and dispersion of vinyl silicone oil and the raw materials of the middle layer, thereby making the mixture of vinyl silicone oil and hydrogenated silicone oil with acrylic resin or acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer more compatible, thereby improving the heat sealing strength and peeling strength of the double-cavity mask bag using the repeatedly easy-to-peel material and reducing the bag breakage rate.

[0021] In a second aspect, a double-cavity facial mask bag using the repeatedly easy-to-peel material of the present application is provided.

[0022] A double-cavity facial mask bag using a removable material is composed of a front transparent layer, a middle removable layer, and a back aluminum layer stacked from top to bottom. The middle removable layer, the front transparent layer, and the back aluminum layer form a first cavity and a second cavity, respectively. The first cavity is located above the second cavity. The front transparent layer, the middle removable layer, and the back aluminum layer are all composited from a multilayer film.

[0023] The front transparent layer includes, from top to bottom, a high barrier layer of aluminum oxide evaporated PET, an adhesive layer and a heat sealing layer of PE;

[0024] The middle easily peelable layer comprises, from top to bottom, an easily peelable material, an adhesive layer and a heat-sealing layer PE;

[0025] The back aluminum coating layer includes a heat sealing layer PE, an adhesive layer and a high barrier layer of aluminum oxide vapor-deposited PET from top to bottom.

[0026] By adopting the above technical solution, the middle repeated easy-to-peel layer, the front transparent layer and the back aluminum-plated layer form the first cavity and the second cavity respectively. The first cavity is located above the second cavity. After the facial mask is placed in the second cavity, the opening edge of the second cavity is heat-sealed. After the heating agent or refrigerant is placed in the first cavity, the opening edge of the first cavity is heat-sealed to form an easy-to-peel heat seal line.

[0027] The removable material is easy to remove and press-seal. When using, the user peels off the removable heat seal, adds an appropriate amount of water to the first cavity, and then manually presses the removable heat seal to re-adhere the seal. The water in the first cavity reacts with the refrigerant or heating agent, producing an endothermic or exothermic reaction, which in turn cools or heats the mask in the second cavity. Using a double-chamber mask bag made of removable material in combination with a refrigerant or heating agent to heat or cool the bagged mask eliminates the need for a refrigerator to heat or cool the mask. Furthermore, the removable double-chamber mask bag, once press-sealed, is not easily broken, making it quick and convenient to use.

[0028] The heat-sealing layer and the corona layer are provided in the repeatedly easy-to-peel material, so that the middle layer has a stronger bonding force with the upper and lower layers, so that the repeatedly easy-to-peel material can be better opened and pressed to seal, and the bag is not easy to break during use.

[0029] Preferably, the front transparent layer further comprises a printing layer, an adhesive layer, a high-strength PET layer and an adhesive layer, and the printing layer comprises a printing layer PET and a printing ink layer from top to bottom.

[0030] The printing layer PET, printing ink layer, adhesive layer, high-strength layer PET and adhesive layer are stacked on the high-barrier layer of alumina vapor-deposited PET in sequence from top to bottom.

[0031] By adopting the above technical solution, the markability, strength and isolation performance of the double-cavity mask bag using the repeatedly easy-to-peel material are improved.

[0032] Preferably, the middle repeatedly easy-to-peel layer further comprises a high-strength PET layer, an adhesive layer, a barrier layer AL and an adhesive layer; the high-strength PET layer, the adhesive layer, the barrier layer AL and the adhesive layer are sequentially stacked on the heat-sealing layer PE from top to bottom;

[0033] The back aluminum plating also includes an adhesive layer, an aluminum-plated barrier layer VMPET, an adhesive layer, and a printing oil layer; the printing oil layer includes a printing ink layer and a printing layer PET; the adhesive layer, the aluminum-plated barrier layer VMPET, the adhesive layer, the printing ink layer and the printing layer PET are stacked in sequence from top to bottom below the high-barrier layer alumina vapor-deposited PET.

[0034] By adopting the above technical solution, the thermal conductivity and strength of the middle repeatedly easy-to-peel layer are improved; the markability, strength and isolation performance of the double-cavity mask bag using the repeatedly easy-to-peel material are improved.

[0035] Preferably, a preparation process of a double-cavity facial mask bag using a repeatedly easy-to-open material is as follows:

[0036] Preparation of the removable material: According to the formula composition of the heat seal layer, the middle layer and the corona layer, the components of each weight portion are weighed respectively, and then a three-layer co-extrusion blown film process is used to form a film; then the corona layer is corona treated to prepare the removable material; printing: the printing layer of the front transparent layer and the back aluminum coating layer is printed as required;

[0037] Compounding: Using dry compounding or solvent-free compounding gluing method, the high barrier layer of aluminum oxide vapor deposition is compounded with the heat seal layer of PE through the adhesive layer to form a front transparent layer; the repeatedly easy-to-peel material is compounded with the heat seal layer of PE through the adhesive layer to form a middle repeatedly easy-to-peel layer; the high barrier layer of aluminum oxide vapor deposition PET is compounded with the high barrier layer of aluminum oxide vapor deposition PET through the adhesive layer to form a back aluminum coating layer;

[0038] Curing: Curing the front transparent layer, the middle easy-to-peel layer and the back aluminum layer at a temperature of 70℃-80℃ for 20-30 minutes;

[0039] Bag making: The cut heat-sealing layer PE of the front transparent layer and the repeatedly easy-to-peel material of the middle repeatedly easy-to-peel layer are edge-sealed to form a first cavity; the heat-sealing layer PE of the middle repeatedly easy-to-peel layer and the heat-sealing layer PE of the back aluminum-plated layer are edge-sealed to form a second cavity, thereby preparing a double-cavity facial mask bag using repeatedly easy-to-peel material; the heat-sealing temperature is 150-170°C.

[0040] By adopting the above technical solution, the double-chamber mask bag made of repeatedly easy-to-open material uses water to react with the refrigerant or heating agent in the first cavity to achieve cooling or heating of the bagged mask. It does not require the use of a refrigerator or hot water, and is convenient and quick to use.

[0041] In summary, this application has the following beneficial effects:

[0042] 1. A double-chamber facial mask bag using a repeatedly easy-to-peel material is composed of a front transparent layer, a middle repeatedly easy-to-peel layer and a back aluminum-plated layer stacked from top to bottom. The middle repeatedly easy-to-peel layer, the front transparent layer and the back aluminum-plated layer form a first cavity and a second cavity respectively, and the first cavity is located above the second cavity; wherein, the middle repeatedly easy-to-peel layer includes a repeatedly easy-to-peel material, which can realize the opening and press-sealing of the first cavity, making it convenient to inject water into the first cavity. The water reacts with the refrigerant or heating agent in the first cavity to absorb or release heat, thereby cooling or heating the facial mask; during the cooling or heating process, the double-chamber facial mask bag using the repeatedly easy-to-peel material is not easy to break, and does not require refrigeration or hot water, thereby improving the convenience of heating or cooling the bagged facial mask.

[0043] 2. By optimizing the thickness of the corona layer, the middle layer and the heat-sealing layer, and matching the formula of the corona layer, the middle layer and the heat-sealing layer, a stronger bonding force is achieved between the middle layer and the other upper and lower layers, so that the repeatedly easy-to-peel material can be better peeled and pressed to seal, and the bag is not easy to break during use, thereby improving the convenience of using the double-cavity mask bag with the repeatedly easy-to-peel material.

[0044] 3. By adding an appropriate amount of vinyl silicone oil, hydrogenated silicone oil and silane coupling agent to the middle layer, the hydrophobicity of the middle layer is improved, the water absorption of the middle layer after contact with water is reduced, and the attenuation of the peeling force of the middle layer is reduced, thereby reducing the possibility of the double-chamber mask bag made of repeatedly easy-to-peel material breaking when heating or cooling the mask, thereby improving the convenience of use. DETAILED DESCRIPTION

[0045] raw material

[0046] LDPE (melt index of 2g / 10min, density of 0.926g / cm3), LLDPE (melt index of 2g / 10min, density of 0.921g / cm3), mLLDPE (melt index of 2g / 10min, density of 0.905g / cm3, melting temperature of 116℃), ethylene-methyl acrylate copolymer (Vicat softening point 59℃, methyl acrylate content 30%, extrusion grade), ethylene-ethyl acrylate copolymer (ethyl acrylate content 15%, melt flow rate 6.0g / 10min, 190℃ / 2.16kg), ethylene-acrylic acid copolymer (acrylic acid content 7 %, melt flow rate 7g / 10min, Vicat softening temperature 84℃), ethylene-methacrylic acid copolymer (Vicat softening temperature 73.0℃, injection molding grade), two-component polyurethane adhesive (colorless and transparent, bonding strength ≥8Mpa), rosin resin (melting point 70-80℃), acrylonitrile-butadiene-styrene copolymer (density: 1.14g / cm2, heat deformation temperature 110℃, tensile strength 50.0MPa), styrene-ethylene-styrene block copolymer (S / B: 30 / 70, tensile strength: 15, hardness: 70, MFR (1.5g / l0min200℃, 5kg).

[0047] Example

[0048] Example 1-1, a repeatedly easy-to-release material, using raw materials as shown in Table 1, and the preparation process is as follows:

[0049] Preparation of repeatedly easy-to-peel material: According to the formula composition of the heat seal layer, the middle layer and the corona layer, the components of each weight portion are weighed respectively, and then a three-layer co-extrusion blown film process is adopted using a screw extruder to prepare a film, and then the corona layer of the film is corona treated to make the surface tension of the corona layer ≥40dyn.

[0050] The temperature of zone 1 of the screw extruder of the heat sealing layer is 165±5℃, the temperature of zone 2 is 175±5℃, the temperature of zone 3 is 175±5℃, the temperature of zone 4 is 175±5℃, the temperature of zone 5 is 170±5℃, the die temperature of the die head is 190±10℃, and the thickness of the heat sealing layer is 15μm.

[0051] The temperature of zone 1 of the screw extruder of the middle layer is 165±5℃, the temperature of zone 2 is 185±5℃, the temperature of zone 3 is 190±10℃, the temperature of zone 4 is 190±10℃, the temperature of zone 5 is 180±10℃, the temperature of zone 6 is 180±5℃, and the die temperature of the die head is 185±5℃.

[0052] The temperature of zone 1 of the screw extruder for the corona layer is 165±5℃, the temperature of zone 2 is 185±5℃, the temperature of zone 3 is 190±5℃, the temperature of zone 4 is 190±10℃, the temperature of zone 5 is 185±5℃, the temperature of zone 6 is 180±5℃, the temperature of zone 7 is 180±5℃, and the die temperature of the die head is 190±5℃.

[0053] After the repeatedly easy-to-peel material is cooled, the corona layer is subjected to corona treatment by an online corona machine to make the surface tension of the corona layer greater than or equal to 40 dyn, thereby preparing the repeatedly easy-to-peel material.

[0054] Examples 1-2 to 1-4 are a type of repeatedly easy-to-peel material, which differs from Example 1-1 in that the types of raw materials used, weight settings, and thicknesses of each layer are different, as shown in Table 1.

[0055] Table 1. List of raw material types, weights, and thicknesses of each layer of the repeatedly peelable materials of Examples 1-1 to 1-4

[0056]

[0057]

[0058] Example 1-5, a repeatedly easy-to-peel material, differs from Example 1-1 in that the heat-sealing layer is composed of 5% LDPE + 10% LLDPE + 85% mLLDPE; the middle layer is composed of a mixture of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer in a ratio of 2:1:1:2; the corona layer is composed of 20% LDPE + 80% LLDPE; and the thickness ratio of the corona layer, the middle layer, and the heat-sealing layer is 1:1:0.5.

[0059] Example 1-6, a repeatedly easy-to-peel material, differs from Example 1-1 in that the heat-sealing layer is composed of 10% LDPE + 10% LLDPE + 80% mLLDPE; the middle layer is composed of a mixture of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer in a ratio of 8:1:1:2; the corona layer is composed of 80% LDPE + 20% LLDPE; and the thickness ratio of the corona layer, the middle layer, and the heat-sealing layer is 1:0.5:1.

[0060] Example 1-7, a repeatedly easy-to-peel material, differs from Example 1-1 in that the heat-sealing layer is composed of 5% LDPE + 50% LLDPE + 40% mLLDPE; the middle layer is composed of a mixture of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer in a ratio of 5:1:5:2; the corona layer is composed of 50% LDPE + 50% LLDPE; and the thickness ratio of the corona layer, the middle layer, and the heat-sealing layer is 1:6:1.

[0061] Examples 1-8 to 1-10 are a type of repeatedly easy-to-peel material. The difference from Example 1-1 is that the intermediate layer further includes vinyl silicone oil, hydrogenated silicone oil, and a silane coupling agent. The specific types and weights are shown in Table 2.

[0062] Table 2. Types and weights of vinyl silicone oil, hydrogenated silicone oil, and silane coupling agent in the repeatedly easy-to-release materials of Examples 1-8 to 1-10

[0063]

[0064] Example 1-11 is a repeatedly easy-to-peel material, which differs from Example 1-8 in that acrylic resin is used in equal amounts to replace the mixture consisting of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer.

[0065] Example 1-12 is a repeatedly easy-to-release material, which differs from Example 1-8 in that an equal amount of hydrogen-containing silicone oil is used to replace the silane coupling agent.

[0066] Example 1-13 is a repeatedly easy-to-peel material, which differs from Example 1-8 in that vinyl silicone oil is not used.

[0067] Example 1-14 is a repeatedly easy-to-release material, which differs from Example 1-8 in that no silane coupling agent is used.

[0068] Example 1-15 is a repeatedly easy-to-peel material, which differs from Example 1-8 in that no silane coupling agent and vinyl silicone oil are used.

[0069] Example 1-16 is a repeatedly easy-to-peel material, which differs from Example 1-8 in that: vinyl silicone oil with a viscosity of 65000 and a vinyl content of 0.031 is used; the mass ratio of hydrogenated silicone oil, vinyl silicone oil, silane coupling agent and ethylene-acrylate copolymer is 0.05:2.5:0.03:1.

[0070] Example 1-17 is a repeatedly easy-to-peel material. The difference from Example 1-8 is that vinyl silicone oil with a viscosity of 100 and a vinyl content of 0.37 is used; the mass ratio of hydrogenated silicone oil, vinyl silicone oil, silane coupling agent and ethylene-acrylate copolymer is 0.15:1.5:0.16:1.

[0071] Example 2-1, a double-chamber facial mask bag using a repeatedly easy-to-peel material, the layered structure of the double-chamber facial mask bag using the repeatedly easy-to-peel material is arranged as shown in Table 3, the raw materials used are shown in Table 4, and the preparation process is as follows:

[0072] Preparation of repeatedly easy-to-peel material: refer to Example 1-1.

[0073] Printing: The printing layer is printed on the printing film by gravure printing with benzene-free ink at a printing speed of 120m / min, and the ink is dried and cured at 70℃.

[0074] Composite: The dry composite method is used to glue the printed layer (including the printed layer PET and the printing ink layer), the high-strength layer PET, the high-barrier layer alumina vapor-deposited PET and the heat-sealing layer PE in sequence through the adhesive layer to form a front transparent layer.

[0075] The dry lamination method is used for gluing. The repeatedly easy-to-peel material, high-strength layer PET, barrier layer AL and heat-sealing layer PE are compounded in sequence through the adhesive layer to form an intermediate repeatedly easy-to-peel layer.

[0076] The dry lamination method is used to laminate the heat-sealing layer PE, the high-barrier layer alumina vapor-deposited PET, the aluminized barrier layer VMPET and the printing layer in sequence through the adhesive layer to form a back aluminized layer.

[0077] The adhesive layer uses two-component polyurethane adhesive with a glue amount of 2.5±0.5g / m 2 , under the conditions of composite temperature 65 ℃, composite pressure 0.4 MPa, heating and pressing by laminating roller.

[0078] Curing: Curing the front transparent layer, the middle easy-to-peel layer and the back aluminum layer at a temperature of 80°C for 20 minutes;

[0079] Bag making: Cut the front transparent layer, the middle easily peelable layer and the back aluminum-plated layer into rectangles of the same shape on a bag-making machine, and stack the front transparent layer, the middle easily peelable layer and the back aluminum-plated layer together from top to bottom.

[0080] The heat-sealing layer PE of the front transparent layer at the short side of the rectangle is heat-sealed with the repeatedly easy-to-peel material at one end of the middle repeatedly easy-to-peel layer, and the heat-sealing layer PE at the other end of the middle repeatedly easy-to-peel layer is heat-sealed with the heat-sealing layer PE of the back aluminum-plated layer; the front transparent layer, the middle repeatedly easy-to-peel layer and the back aluminum-plated layer at the long side of the rectangle are stacked and heat-sealed, the front transparent layer and the middle repeatedly easy-to-peel layer form a first cavity with an opening on one side and sealed on three sides, the middle repeatedly easy-to-peel layer and the back aluminum-plated layer form a second cavity of the first cavity with an opening on one side and sealed on three sides, the openings of the first cavity and the second cavity are respectively at the two ends of the short side of the rectangular bag, and the first cavity is located above the second cavity, so as to prepare a double-cavity facial mask bag using repeatedly easy-to-peel material, wherein the heat sealing temperature is 150°C.

[0081] Table 3. List of layered structures of the double-chamber facial mask bag using the repeatedly easy-to-peel material in Example 2-1

[0082]

[0083]

[0084] Example 2-2 to Example 2-3 are double-chamber facial mask bags using repeatedly easy-to-peel materials. The difference from Example 2-1 is that the preparation process of the double-chamber facial mask bag using repeatedly easy-to-peel materials and the repeatedly easy-to-peel materials used are different, as shown in Table 4.

[0085] Table 4. Preparation process of double-chamber facial mask bags using repeatedly easy-to-peel materials in Examples 2-1 to 2-3 and the list of settings of the repeatedly easy-to-peel materials used

[0086]

[0087]

[0088] Examples 2-4 to 2-17 are double-chamber facial mask bags using a repeatedly easy-to-peel material. The difference from Example 2-1 is that the repeatedly easy-to-peel material uses the repeatedly easy-to-peel materials of Examples 1-4 to 1-17 in sequence.

[0089] Example 2-18, a double-chamber facial mask bag using a repeatedly easy-to-peel material, differs from Example 2-1 in that the front transparent layer does not include a printing layer, an adhesive layer, a high-strength layer PET and an adhesive layer; the middle repeatedly easy-to-peel layer does not include a high-strength layer PET, an adhesive layer, a barrier layer AL and an adhesive layer; the back aluminum plating does not include an adhesive layer, an aluminum-plated barrier layer VMPET, an adhesive layer and a printing oil layer.

[0090] Comparative Example

[0091] Comparative Example 1 is a double-chamber facial mask bag using a repeatedly easy-to-peel material. The difference from Examples 2-18 is that the middle layer uses ethylene-acrylate copolymer to replace ethylene-acrylate copolymer acrylic acid, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer in equal amounts.

[0092] Comparative Example 2 is a double-cavity facial mask bag using a repeatedly easy-to-open material. The difference from Example 2-1 is that the heat-sealing layer PE is not used in the front transparent layer, and the corona layer is not corona treated.

[0093] Comparative Example 3, a double-chamber facial mask bag using a repeatedly easy-to-peel material, differs from Example 2-1 in that no heat-sealing layer PE is used in the front transparent layer, and the corona layer is not corona treated; the middle layer uses ethylene-acrylate copolymer to replace ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer in equal amounts.

[0094] Comparative Example 4, a double-cavity facial mask bag using a repeatedly easy-to-peel material, differs from Example 2-1 in that the middle layer uses ethylene-acrylate copolymer to replace acrylic acid, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer in equal amounts; the repeatedly easy-to-peel material is arranged from top to bottom as a corona layer, a heat-sealing layer and a middle layer.

[0095] Comparative Example 5, a double-chamber facial mask bag using a repeatedly easy-to-peel material, differs from Example 2-1 in that rosin resin is used to replace an equal amount of ethylene-acrylate copolymer; acrylonitrile-butadiene-styrene copolymer is used to replace an equal amount of ethylene-methacrylic acid copolymer; and styrene-ethylene-styrene block copolymer is used to replace acrylic acid in an equal amount.

[0096] Comparative Example 6, a double-chamber facial mask bag using a repeatedly easy-to-peel material, differs from Examples 2-8 in that rosin resin is used to replace an equal amount of ethylene-acrylate copolymer; acrylonitrile-butadiene-styrene copolymer is used to replace an equal amount of ethylene-methacrylic acid copolymer; and styrene-ethylene-styrene block copolymer is used to replace acrylic acid in an equal amount.

[0097] Performance testing

[0098] Test 1: Heat seal strength

[0099] The heat sealing strength of the test sample is tested according to YBBO0122003-2015, and the unit is N / 15mm.

[0100] Test 2: Peel Strength

[0101] The peel strength of the test sample is tested according to YBB00102003-2015, with the unit of N / 15mm.

[0102] Test 3: Bag Breakage Evaluation Results

[0103] Place 2L of water and 6.6g of agar powder in a glass container, immerse the container in 95°C hot water, and heat for at least 1 hour to completely dissolve the agar. Filter the solution through a 50-mesh metal mesh to remove gelled foreign matter. Add 0.14g of methylene blue to the solution. In a glove box that has been circulated with nitrogen for at least 15 minutes, add 1.25g of sodium dithionite to the solution and mix evenly to obtain a color-developing solution (uncolored). In a glove box that has been circulated with nitrogen for at least 15 minutes, add approximately half the volume of the color-developing solution to the first cavity of a double-cavity facial mask bag using a reusable easy-peel material. After filling with nitrogen, heat-seal the first cavity of the double-cavity facial mask bag using a reusable easy-peel material using a sealing machine to form an easy-peel heat seal line, thereby obtaining a double-cavity facial mask bag using a reusable easy-peel material filled with the color-developing solution.

[0104] The easy-peel heat seal was torn by hand, then resealed by pressing firmly (simulating the process of water injection into the mask). The resealed double-chamber mask bag with reusable peel material was laid flat and allowed to rest for 10 minutes. Twenty double-chamber mask bags with reusable peel material were then arranged in a row and dropped from a height of 1 meter onto a steel floor. This was considered one treatment. After repeating this treatment five times, the number of bags damaged was counted. Bags that showed no visible damage but showed significant coloration in the methylene blue agar solution after being stored at 40°C and 90% relative humidity for three days were considered damaged. The bags were then judged as damaged according to the criteria A, B, C, and D below.

[0105] A: No broken bag;

[0106] B: The bag breakage rate is above 0 and less than 10%;

[0107] C: The bag breakage rate is more than 10% and less than 20%;

[0108] D: The bag breakage rate is more than 20%.

[0109] Test samples: The double-cavity facial mask bags using repeatedly easy-to-peel materials in Examples 2-1 to 2-18 are used as example samples; and the double-cavity facial mask bags using repeatedly easy-to-peel materials in Comparative Examples 1-6 are used as comparative example samples.

[0110] Test results: bag breakage evaluation results of the double-cavity facial mask bags using the repeatedly easy-to-peel material of Examples 2-1 to 2-18 and Comparative Examples 1-6, heat sealing strength and peel strength of the easy-to-peel heat seal line of the first cavity. For test results, refer to Table 5.

[0111] Table 5. Evaluation results of bag breakage of double-cavity facial mask bags using repeatedly easy-to-peel materials in Examples 2-1 to 2-18 and Comparative Examples 1-6, and evaluation results of heat seal strength and peel strength of the easy-to-peel heat seal line of the first cavity

[0112]

[0113]

[0114] Combining Examples 2-1 to 2-18 and Comparative Examples 1-6 and Table 5, it can be seen that:

[0115] The double-chamber facial mask bags using the reusable releasable material in Examples 2-1 to 2-18 exhibited superior bag breakage evaluation results, heat seal strength, and peel strength to those of Comparative Examples 1-6. This demonstrates that the reusable releasable material in the double-chamber facial mask bags of the application allows for the first cavity to be opened and press-sealed, facilitating the injection of water into the first cavity. The water reacts with the refrigerant or heating agent to absorb or release heat, cooling or heating the mask. Since the double-chamber facial mask bags using the reusable releasable material exhibited favorable bag breakage evaluation results after press-sealing, the bags are less susceptible to bag breakage during use and do not require a refrigerator or hot water for cooling, enhancing the convenience of heating or cooling the bagged facial mask.

[0116] The test results of Comparative Examples 5 and 6 and Examples 2-1 to 2-8 show that compared with rosin resin, acrylonitrile-butadiene-styrene copolymer and styrene-ethylene-styrene block copolymer, the middle layer is one or more of a mixture of acrylic resin, acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer, which has a better compatibility effect with hydrogenated silicone oil, vinyl silicone oil and silane coupling agent. It is possible that hydrogenated silicone oil, vinyl silicone oil and silane coupling agent have a better dispersion effect with acrylic resin, acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer, and hydrogenated silicone oil can better serve as a connecting bridge between molecules, thereby improving the toughening and waterproofing effects.

[0117] The bag breakage evaluation results, heat sealing strength and peeling strength of the double-cavity facial mask bags using the repeatedly easy-to-peel material in Examples 2-1 to 2-4 are better than those in Examples 2-5 to 2-7, indicating that optimizing the raw material type, weight and thickness of each layer of the repeatedly easy-to-peel material can improve the heat sealing strength and peeling strength of the double-cavity facial mask bags using the repeatedly easy-to-peel material and reduce the bag breakage rate.

[0118] The reason may be that: the use of LDPE, LLDPE and mLLDPE in a suitable proportion makes the heat-sealing layer have better mechanical strength, higher elongation at break and better processability; the reduction of LDPE content and the increase of LLDP and / or mLLDPE content make the processability worse, and then the uniformity of the corona layer and the heat-sealing layer worsens, the high activity characteristics of mLLDPE cannot be fully exerted, and the interaction force between the other layers is weakened; further, the thickness of the uniform heat-sealing layer is too thin or too thick, resulting in the weakening of the peeling force between the heat-sealing layers or between the heat-sealing layer and the middle layer, which reduces the heat sealing strength and peel strength of the easy-peel heat sealing line of the first cavity of the double-cavity mask bag using the repeatedly easy-peel material.

[0119] Furthermore, when the middle layer adopts a mixture of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer, the carboxyl polar groups are reduced, so that the viscosity and adhesion of the middle layer decrease, further reducing the heat sealing strength and peel strength of the easy-to-peel heat seal line of the double-cavity mask bag using repeatedly easy-to-peel materials; and when the carboxyl polar groups in the middle layer increase, the viscosity and adhesion are improved; however, the hydrophilic groups in the easy-to-peel heat seal line formed by the heat sealing of the opening edge of the first cavity increase, and the middle layer easily absorbs water during use, resulting in a decrease in the peel strength of the easy-to-peel heat seal line and an increase in the bag breakage rate.

[0120] The bag breakage evaluation results of the double-cavity facial mask bags using repeatedly easy-to-peel materials in Examples 2-8 to 2-11 are better than those in Examples 2-1 to 2-4, indicating that by adding an appropriate amount of vinyl silicone oil, hydrogen-containing silicone oil and silane coupling agent to the repeatedly easy-to-peel material, although the heat sealing strength and peel strength of the double-cavity facial mask bags using the repeatedly easy-to-peel material are not significantly improved, the bag breakage rate is significantly reduced, which improves the convenience of using the double-cavity facial mask bags using the repeatedly easy-to-peel material; the reason may be that: adding vinyl silicone oil, hydrogen-containing silicone oil and silane coupling agent to the middle layer improves the hydrophobicity of the middle layer, reduces the water absorption of the middle layer after contact with water, reduces the attenuation of the peeling force of the middle layer, and thereby reduces the possibility of bag breakage when heating or cooling the mask.

[0121] The bag breaking evaluation results, heat sealing strength and peeling strength of the double-cavity facial mask bags using the repeatedly easy-to-peel material in Examples 2-8 to 2-11 are better than those in Examples 2-12 to 2-17, indicating that adding an appropriate amount of vinyl silicone oil, hydrogen-containing silicone oil and silane coupling agent to the repeatedly easy-to-peel material can reduce the bag breaking rate; if the amount of vinyl silicone oil, hydrogen-containing silicone oil and silane coupling agent added to the repeatedly easy-to-peel material is too much or too little, the bag breaking rate will increase and the heat sealing strength and peeling strength will decrease.

[0122] The test results of Examples 2-13 to 2-15 and 2-8 show that the combination of vinyl silicone oil, hydrogenated silicone oil and silane coupling agent in the middle layer improves the heat sealing strength and peeling strength of the double-cavity mask bag using repeatedly easy-to-peel materials and reduces the bag breakage rate.

[0123] The reasons may be that: vinyl silicone oil with higher viscosity can enhance the hydrophobic properties of the middle layer, and silane coupling agent can promote the mixing and dispersion effect of vinyl silicone oil and the raw materials of the middle layer; hydrogen-containing silicone oil, on the one hand, can react with vinyl silicone oil, acrylic acid and its derivatives to improve the toughness of the middle layer; on the other hand, hydrogen-containing silicone oil with lower viscosity fills between macromolecules to increase the density of the middle layer, thereby reducing the effect of moisture on the peeling force of the easy-to-peel heat seal during heating or cooling, thereby reducing the bag breakage rate.

[0124] The bag breakage evaluation results, heat seal strength, and peel strength of the double-chamber facial mask bag using the reusable easy-peel material in Example 2-8 were superior to those of Examples 2-16 and 2-17, indicating that the viscosity of the vinyl silicone oil was too high or too low, and the content of the hydrogenated silicone oil and silane coupling agent was too high or too low, resulting in poor compatibility between the vinyl silicone oil, hydrogenated silicone oil, and silane coupling agent, leading to reduced heat seal strength and peel strength, and increased bag breakage rate, in the double-chamber facial mask bag using the reusable easy-peel material. This may be because when the viscosity of the vinyl silicone oil is too high, when the raw materials of the intermediate layer are poorly dispersed and the content of hydrogenated silicone oil is low, the gaps between the molecules in the intermediate layer increase, resulting in a greater impact on the viscosity and peel strength of the intermediate layer by water, and a decrease in the viscosity and peel strength of the intermediate layer. When the content of hydrogenated silicone oil is relatively high and the content of vinyl silicone oil is low, the hydrogenated silicone oil reacts with the carboxyl groups in the raw materials of the intermediate layer, reducing the number of carboxyl groups and reducing the viscosity and peel strength of the intermediate layer.

[0125] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A double-chamber facial mask bag using a repeatedly easy-to-open material, characterized in that: The product is composed of a front transparent layer, a middle easily peelable layer, and a back aluminum layer stacked from top to bottom. The middle easily peelable layer, the front transparent layer, and the back aluminum layer form a first cavity and a second cavity, respectively, with the first cavity located above the second cavity. When in use, the user peels off the easy-peel heat seal, adds appropriate amount of water to the first cavity, and then presses the easy-peel heat seal by hand to re-adhere the easy-peel heat seal. The front transparent layer, the middle easily peelable layer, and the back aluminum layer are all composited by a multi-layer film. The front transparent layer includes, from top to bottom, a high barrier layer of aluminum oxide evaporated PET, an adhesive layer and a heat sealing layer of PE; The middle easily peelable layer comprises, from top to bottom, an easily peelable material, an adhesive layer and a heat-sealing layer PE; The back aluminum coating layer includes a heat-sealing layer PE, an adhesive layer and a high-barrier layer alumina vapor-deposited PET from top to bottom; The repeatedly easy-to-peel material comprises a heat-sealing layer, an intermediate layer and a corona layer from top to bottom; The heat seal layer is prepared from 10% to 30% of LDPE, 20% to 40% of LLDPE and 30% to 70% of mLLDPE, based on the mass percentage of the total mass of the heat seal layer; The intermediate layer is a mixture of acrylic acid, ethylene-acrylate copolymer, ethylene-acrylate copolymer, and ethylene-methacrylic acid copolymer in a mass ratio of (3-7):1:1:2; the intermediate layer also includes hydrogenated silicone oil and vinyl silicone oil, the mass ratio of hydrogenated silicone oil, vinyl silicone oil, and ethylene-acrylate copolymer being 0.1:(1.5-2.0):1; the viscosity of the hydrogenated silicone oil is 40-100 mPa·s, and the hydrogen content is 1.1-4.2 mmol / g; The corona layer is prepared from 30% to 70% LDPE and 70% to 30% LLDPE based on the mass percentage of the total amount of the corona layer; the surface tension of the corona layer after corona treatment is greater than or equal to 40 dyn.

2. The double-cavity facial mask bag using repeatedly easy-to-open material according to claim 1, characterized in that: The thickness ratio of the corona layer, the intermediate layer and the heat-sealing layer is (1-3): (1-5): (1-3).

3. The double-chamber facial mask bag using a repeatedly easy-to-open material according to claim 1, characterized in that: The intermediate layer further comprises a silane coupling agent; the mass ratio of the silane coupling agent to the ethylene-acrylate copolymer is (0.06-0.12):

1.

4. The double-chamber facial mask bag using repeatedly easy-to-open material according to claim 1, characterized in that: The front transparent layer further comprises a printing layer, an adhesive layer, a high-strength PET layer and an adhesive layer, and the printing layer comprises a printing layer PET and a printing ink layer from top to bottom; The printing layer PET, printing ink layer, adhesive layer, high-strength layer PET and adhesive layer are stacked on the high-barrier layer of alumina vapor-deposited PET in sequence from top to bottom.

5. The double-chamber facial mask bag using repeatedly easy-to-open material according to claim 1, characterized in that: The middle repeatedly easy-to-peel layer further comprises a high-strength PET layer, an adhesive layer, a barrier layer AL and an adhesive layer; the high-strength PET layer, the adhesive layer, the barrier layer AL and the adhesive layer are sequentially stacked on the heat-sealing layer PE from top to bottom; The back aluminum plating also includes an adhesive layer, an aluminum-plated barrier layer VMPET, an adhesive layer, and a printing oil layer; the printing oil layer includes a printing ink layer and a printing layer PET; the adhesive layer, the aluminum-plated barrier layer VMPET, the adhesive layer, the printing ink layer and the printing layer PET are stacked in sequence from top to bottom below the high-barrier layer alumina vapor-deposited PET.

6. The double-chamber facial mask bag using repeatedly easy-to-open material according to claim 1, characterized in that: The preparation process is as follows: Preparation of the repeatedly easy-to-peel material: According to the formula composition of the heat seal layer, the intermediate layer and the corona layer, the components of each weight portion are weighed respectively, and then a three-layer co-extrusion blown film process is used to form a film; then the corona layer is corona treated to prepare the repeatedly easy-to-peel material; Printing: Print the front transparent layer and the back aluminum layer according to the requirements; Compounding: Using dry compounding or solvent-free compounding gluing method, the high barrier layer of aluminum oxide vapor deposition is compounded with the heat seal layer of PE through the adhesive layer to form a front transparent layer; the repeatedly easy-to-peel material is compounded with the heat seal layer of PE through the adhesive layer to form a middle repeatedly easy-to-peel layer; the high barrier layer of aluminum oxide vapor deposition PET is compounded with the high barrier layer of aluminum oxide vapor deposition PET through the adhesive layer to form a back aluminum coating layer; Curing: Curing the front transparent layer, the middle easy-to-peel layer and the back aluminum layer at a temperature of 70℃-80℃ for 20-30 minutes; Bag making: The heat-sealing layer PE of the cut front transparent layer and the removable material of the middle removable layer are edge-sealed to form the first cavity; The heat-sealing layer PE of the middle repeatedly easy-to-peel layer and the heat-sealing layer PE of the back aluminum-plated layer are edge-sealed to form a second cavity, thereby preparing a double-cavity facial mask bag using repeatedly easy-to-peel material; the heat-sealing temperature is 150-170°C.

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