Deoxidizing agent packaging material based on CPP film and production process of deoxidizing agent packaging material

Abstract

The invention relates to the technical field of deoxidizer packaging materials, and particularly discloses a deoxidizer packaging material based on a CPP film and a production process of the deoxidizer packaging material. The deoxidizer packaging material based on the CPP film comprises an inner film, an outer film and an oxygen indication line arranged at the composite position of the inner film and the outer film. The inner film comprises a first CPP film, plain soft paper and a second CPP film from inside to outside; and the outer film comprises a third CPP film and a PET film from inside to outside. The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: blending polypropylene, lanthanum oxide, nano iron powder, nano silicon dioxide, a dispersing agent and an antioxidant, carrying out extrusion casting to obtain a cast sheet, carrying out two-way stretching at 150-165 DEG C according to a stretching ratio of 5-10, carrying out alternating magnetic field treatment for 5-10 seconds, carrying out heat setting at 100-108 DEG C for 1-3 minutes, and cooling. The anti-leakage powder coating has good transparency, and has good anti-leakage powder performance while good air permeability of a product is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of deoxidizer packaging materials, and in particular to a CPP film-based deoxidizer packaging material and a production process thereof. Background Art

[0002] Many foods in daily life will slowly oxidize in the air, causing deterioration or even corruption. Therefore, in the process of preserving substances so that they do not deteriorate, it is necessary to ensure that the oxygen content in the environment is extremely low or that there is almost no oxygen in the packaging. This will largely ensure the quality of the packaged food and extend the shelf life.

[0003] Deoxidizer has the function of absorbing oxygen and slowing down the oxidation of food. It is currently generally used in food preservation. Deoxidizer easily reacts with free oxygen or dissolved oxygen. It is placed in packaging materials with a certain degree of air permeability and strength, and sealed together with food in a food bag. It can effectively remove residual oxygen in the bag and prevent food from deteriorating due to oxidation.

[0004] Since the raw materials in the smart color-changing deoxidizer may react with polyethylene, causing various problems in the packaging material, cast polypropylene (CPP) is often used as its packaging material. However, the cast polypropylene material currently used for packaging smart color-changing deoxidizers still has problems such as poor light transmittance and easy powder leakage. At the same time, it is not breathable enough and has a short shelf life for food, which limits its promotion and use and needs to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a deoxidizer packaging material based on CPP film and a production process thereof.

[0006] A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicator line is arranged at the composite part of the inner film and the outer film; the inner film comprises a first CPP film, a plain soft paper and a second CPP film from the inside to the outside; the outer film comprises a third CPP film and a PET film from the inside to the outside.

[0007] Preferably, the thickness of the first CPP film is 15-35 μm, the thickness of the second CPP film is 15-35 μm, the thickness of the third CPP film is 15-35 μm, and the thickness of the PET film is 10-25 μm.

[0008] Preferably, the weight of the plain soft paper is 30-50 g / m 2 .

[0009] Preferably, the PET film is provided with through holes, the diameter of the through holes is 0.38-0.51 mm, and the hole distance between two adjacent through holes is 1.1-3 mm.

[0010] Preferably, the first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: blending polypropylene, lanthanum oxide, nano iron powder, nano silicon dioxide, a dispersant and an antioxidant, extruding a cast sheet, biaxially stretching at 150-165°C with a stretch ratio of 5-10, treating with an alternating magnetic field for 5-10s, heat-setting at 100-108°C for 1-3min, and cooling.

[0011] More preferably, the mass ratio of polypropylene, lanthanum oxide, nano iron powder, nano silicon dioxide, dispersant and antioxidant is 50-70:0.1-1:1-5:5-15:1-2:1-2.

[0012] More preferably, the polypropylene resin has a melt flow rate of 6.5-8.5 g / 10 min at 230° C. and 2.16 kg.

[0013] More preferably, the frequency of the alternating magnetic field is 20-30 Hz, and the intensity of the alternating magnetic field is 0.5-0.8T.

[0014] More preferably, the dispersant is at least one of microcrystalline wax, polyethylene glycol 800, stearic acid monoglyceride, and vinyl bisstearamide.

[0015] More preferably, the antioxidant is at least one of antioxidant 1010, antioxidant BHT, antioxidant TNP, and antioxidant TPP.

[0016] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging, cooling to 15-25°C, keeping warm for 1-2h, then heating to 40-60°C, keeping warm for 1-2h, continuing to cool to 30-40°C, keeping warm for 1-2h, and returning to room temperature.

[0017] Preferably, the aging temperature is 70-80°C and the aging time is 10-20 hours.

[0018] Preferably, during the cooling process to 15-25°C, the cooling rate is 2-4°C / min.

[0019] Preferably, during the process of heating to 40-60°C, the heating rate is 1-2°C / min.

[0020] Preferably, during the process of cooling to 30-40°C, the cooling rate is 5-10°C / min.

[0021] Preferably, during the process of returning to room temperature, the heating rate is 0.1-1°C / min.

[0022] Beneficial effects: 1. The present invention adopts nano iron powder and nano silicon dioxide compound to fill the polypropylene substrate. After stretching, the interface between the nano iron powder and the polypropylene substrate is separated to form micropores, and the pore uniformity is extremely high.

[0023] 2. The nano-silica and polypropylene combined inside the present invention not only have a high mutual bonding strength, but also the inorganic nano-silica and the organic polypropylene substrate are subjected to programmed temperature rise and fall treatment. Due to the large difference in deformation between the two, a tiny gap is formed between the interfaces. The micropores and the tiny gaps cooperate with each other, which ensures air permeability while also having good waterproof properties.

[0024] 3. In the deoxidizer packaging material obtained by the present invention, lanthanum oxide and nano-silicon dioxide are compounded to toughen polypropylene, so that the CPP film product not only has good mechanical strength, but also has good transparency and is not easy to be damaged. While effectively ensuring good air permeability of the product, it has good anti-leakage performance. At the same time, it has a simple structure and is easy to use, and is suitable for large-scale promotion and use.

[0025] 4. The packaging material obtained by the present invention is used to package the deoxidizer, which can prevent the deoxidizer from flowing out and has good tear resistance, thereby ensuring that the deoxidizer can be used stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a comparison chart of air permeability and light transmittance of the deoxidizer packaging materials obtained in Example 5 and Comparative Examples 1-2.

[0027] Figure 2 The pH value change curve of grass carp fillet after packaging 5 g of sterilized grass carp fillet with the deoxygenated bag made from the packaging materials obtained in Example 5 and Comparative Examples 1-2.

[0028] Figure 3 The peroxide value change curve of grass carp fillet after packaging 5 g of sterilized grass carp fillet with the deoxygenated bag made from the packaging materials obtained in Example 5 and Comparative Examples 1-2. DETAILED DESCRIPTION

[0029] The present invention will be further explained below in conjunction with specific embodiments.

[0030] The grade of the polypropylene resin used below is Shanghai Petrochemical PP F800E, and the melt flow rate is 8.0 g / 10 min at 230°C and 2.16 kg.

[0031] The PET film used below was purchased from Beijing Nuo Hengyu Photoelectric Technology Co., Ltd. The film is provided with through holes with a diameter of 0.38-0.51 mm, and the hole distance between two adjacent through holes is 1.1-3 mm.

[0032] Example 1 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0033] The inner film includes: a first CPP film with a thickness of 15 μm, a gram weight of 30 g / m 2 The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 15 μm and a PET film with a thickness of 10 μm.

[0034] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 5000g polypropylene, 10g lanthanum oxide, 100g nano iron powder, 500g nano silicon dioxide, 100g polyethylene glycol 800, and 100g antioxidant 1010 are blended, added into an extrusion casting machine for melting and casting, wherein the extrusion temperature is 220°C, the cooling roller temperature is 30°C, the biaxial stretching, the stretching temperature is 150°C, the stretching ratio is 5, the film is treated by an alternating magnetic field for 5s, the alternating magnetic field frequency is 20Hz, the alternating magnetic field strength is 0.5T, the film is heat-set at a temperature of 100°C for 1min, and cooled.

[0035] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 70°C for 10 hours, cooling to 15°C at a rate of 2°C / min, keeping warm for 1 hour, heating to 40°C at a rate of 1°C / min, keeping warm for 1 hour, cooling to 30°C at a rate of 5°C / min, keeping warm for 1 hour, and returning to room temperature at a rate of 0.1°C / min.

[0036] Example 2 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0037] The inner film includes: a first CPP film with a thickness of 35 μm, a gram weight of 50 g / m 2 The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 35 μm and a PET film with a thickness of 25 μm.

[0038] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 7000g polypropylene, 100g lanthanum oxide, 500g nano iron powder, 1500g nano silicon dioxide, 200g microcrystalline wax and 200g antioxidant BHT are blended and added to an extrusion casting machine for melting and casting, wherein the extrusion temperature is 235°C, the cooling roller temperature is 40°C, the biaxial stretching is 165°C, the stretching ratio is 10, the film is treated with an alternating magnetic field for 10s, the alternating magnetic field frequency is 30Hz, the alternating magnetic field strength is 0.8T, the film is heat-set at a temperature of 108°C for 3min, and cooled.

[0039] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 80°C for 20h, cooling to 25°C at a rate of 4°C / min, keeping warm for 2h, heating to 60°C at a rate of 2°C / min, keeping warm for 2h, cooling to 40°C at a rate of 10°C / min, keeping warm for 2h, and returning to room temperature at a rate of 1°C / min.

[0040] Example 3 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0041] The inner film includes: a first CPP film with a thickness of 20 μm, a gram weight of 45 g / m 2 The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 30 μm and a PET film with a thickness of 15 μm.

[0042] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 6500g polypropylene, 20g lanthanum oxide, 400g nano iron powder, 800g nano silicon dioxide, 170g stearic acid monoglyceride, and 120g antioxidant TNP are blended, added into an extrusion casting machine for melting and casting, wherein the extrusion temperature is 230°C, the cooling roller temperature is 33°C, the biaxial stretching, the stretching temperature is 160°C, the stretching ratio is 7, the alternating magnetic field treatment is performed for 9s, the alternating magnetic field frequency is 21Hz, the alternating magnetic field strength is 0.7T, the heat setting is performed at a temperature of 102°C for 2.5min, and the film is cooled.

[0043] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 73°C for 18h, cooling to 22°C at a rate of 2.5°C / min, keeping warm for 80min, heating to 45°C at a rate of 1.8°C / min, keeping warm for 100min, cooling to 37°C at a rate of 7°C / min, keeping warm for 80min, and returning to room temperature at a rate of 0.7°C / min.

[0044] Example 4 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0045] The inner film includes: a first CPP film with a thickness of 30 μm, a gram weight of 35 g / m 2 The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 20 μm and a PET film with a thickness of 20 μm.

[0046] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 5500g polypropylene, 80g lanthanum oxide, 200g nano iron powder, 1200g nano silicon dioxide, 130g stearic acid monoglyceride, and 180g antioxidant TPP are blended, added to an extrusion casting machine for melting and casting, wherein the extrusion temperature is 225°C, the cooling roller temperature is 37°C, biaxial stretching, the stretching temperature is 155°C, the stretching ratio is 9, and the film is treated with an alternating magnetic field for 7s, the alternating magnetic field frequency is 27Hz, the alternating magnetic field strength is 0.6T, and the film is heat-set at a temperature of 106°C for 1.5min and cooled.

[0047] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 77°C for 12h, cooling to 18°C ​​at a rate of 3.5°C / min, keeping warm for 100min, heating to 55°C at a rate of 1.2°C / min, keeping warm for 80min, cooling to 33°C at a rate of 9°C / min, keeping warm for 100min, and returning to room temperature at a rate of 0.3°C / min.

[0048] Example 5 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0049] The inner film includes: a first CPP film with a thickness of 25 μm, a gram weight of 40 g / m 2The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 25 μm and a PET film with a thickness of 20 μm.

[0050] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 6000g polypropylene, 50g lanthanum oxide, 300g nano iron powder, 1000g nano silicon dioxide, 150g vinyl bisstearamide, and 150g antioxidant BHT are blended, added into an extrusion casting machine for melting and casting, wherein the extrusion temperature is 228°C, the cooling roller temperature is 35°C, biaxial stretching, the stretching temperature is 158°C, the stretching ratio is 8, and the film is treated by an alternating magnetic field for 8s, the alternating magnetic field frequency is 24Hz, the alternating magnetic field strength is 0.65T, and the film is heat-set at a temperature of 104°C for 2min and cooled.

[0051] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 75°C for 15h, cooling to 20°C at a rate of 3°C / min, keeping warm for 90min, heating to 50°C at a rate of 1.5°C / min, keeping warm for 90min, cooling to 35°C at a rate of 8°C / min, keeping warm for 90min, and returning to room temperature at a rate of 0.5°C / min.

[0052] Comparative Example 1 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0053] The inner film includes: a first CPP film with a thickness of 25 μm, a gram weight of 40 g / m 2 The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 25 μm and a PET film with a thickness of 20 μm.

[0054] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 6000g polypropylene, 50g lanthanum oxide, 1300g nano-silicon dioxide, 150g vinyl bisstearamide, and 150g antioxidant BHT are blended, added into an extrusion casting machine for melting and casting, wherein the extrusion temperature is 228°C, the cooling roller temperature is 35°C, biaxial stretching, the stretching temperature is 158°C, the stretching ratio is 8, and the film is treated by an alternating magnetic field for 8s, the alternating magnetic field frequency is 24Hz, the alternating magnetic field strength is 0.65T, and the film is heat-set at a temperature of 104°C for 2min and cooled.

[0055] The production process of the deoxidizer packaging material based on CPP film comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 75°C for 15h, cooling to 20°C at a rate of 3°C / min, keeping warm for 90min, heating to 50°C at a rate of 1.5°C / min, keeping warm for 90min, cooling to 35°C at a rate of 8°C / min, keeping warm for 90min, and returning to room temperature at a rate of 0.5°C / min.

[0056] Comparative Example 2 A deoxidizer packaging material based on CPP film comprises an inner film, an outer film, and an oxygen indicating line is arranged at the composite part of the inner film and the outer film.

[0057] The inner film includes: the first CPP film with a thickness of 8μm, a gram weight of 18g / m 2 The outer film comprises, from the inside to the outside, a third CPP film with a thickness of 10 μm and a PET film with a thickness of 5 μm.

[0058] The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: 6000g polypropylene, 50g lanthanum oxide, 300g nano iron powder, 1000g nano silicon dioxide, 150g vinyl bisstearamide, and 150g antioxidant BHT are blended, added into an extrusion casting machine for melting and casting, wherein the extrusion temperature is 228°C, the cooling roller temperature is 35°C, biaxial stretching, the stretching temperature is 158°C, the stretching ratio is 8, and the film is treated by an alternating magnetic field for 8s, the alternating magnetic field frequency is 24Hz, the alternating magnetic field strength is 0.65T, and the film is heat-set at a temperature of 104°C for 2min and cooled.

[0059] The above-mentioned CPP film-based deoxidizer packaging material production process includes the following steps: attaching an oxygen indicator line to the outside of the inner film, attaching the outer film to the outside of the inner film and the oxygen indicator line through an adhesive, laminating with a dry laminating machine, aging at 75°C for 15 hours, and returning to room temperature.

[0060] The air permeability of the deoxidizer packaging materials obtained in Example 5 and Comparative Examples 1-2 was measured with reference to JIS P 8117-2009 "Determination of air permeability (middle range) of paper and paperboard - Gurley method".

[0061] The plain soft paper in Example 5 and Comparative Examples 1-2 was not added, and the rest remained the same. Then, the light transmittance of the samples obtained in each group was tested with reference to GB / T2410-2008 "Determination of light transmittance and haze of transparent plastics".

[0062] like Figure 1As shown, the sample obtained in Example 5 has the best air permeability and the highest light transmittance, which is better than that in Comparative Examples 1-2 (P < 0.05).

[0063] Determination of anti-leakage powder performance: The deoxidizer packaging materials obtained in Example 5 and Comparative Examples 1-2 are placed flat on the table, and two layers of facial tissue paper are laid underneath. Use a burette to drop 0.1 mL of red ink onto the surface of the packaging material with an area of ​​about half of the air permeability area of ​​the unit piece, and let it stand for 5 minutes. Observe whether the facial tissue paper laid underneath the product absorbs the red ink of the colored liquid. If the red ink is not absorbed, it means that the product is qualified.

[0064] The anti-leakage performance of the deoxidizer packaging materials obtained in Example 5 and Comparative Example 2 was qualified, while that of Comparative Example 1 was unqualified.

[0065] Fresh grass carp was used as the basic simulated food for lipid oxidation experiments. About 1500 g of fresh grass carp was headed, thoroughly cleaned, deboned and cut into 20 fillets. The fresh fillets were first rinsed with sterile distilled water, then the surface moisture was absorbed with sterile absorbent paper, and then soaked in 10% saline for 30 minutes; then the salt-soaked fillets were sterilized in a solution containing ascorbic acid (mass fraction 0.1%) and citric acid (mass fraction 1%) for 5 minutes.

[0066] The deoxidizer packaging materials obtained in Example 5 and Comparative Examples 1-2 were sterilized with alcohol and then packaged (each containing 1 g of deoxidizer). The packaged deoxidizers were then packaged together with 5 g of sterilized grass carp fillets in PE bags and stored in a 4°C refrigerator for different periods of time.

[0067] The surface pH of grass carp fillets was measured using a Eutech pH 150 probe from Thermo Fisher Scientific Inc. (USA).

[0068] like Figure 2 As shown, the pH value of the grass carp fillets in Example 5 is more stable.

[0069] The peroxide value (POV) of fresh grass carp at different storage times was determined by sodium thiosulfate-iodine (Na2S2O3-I2) titration method. Freshly killed grass carp was used for blank test. The POV (meq / kg) of fresh grass carp was calculated after it was stored in heat-sealed bags for a certain period of time.

[0070] POV = (VB) × N × 1000 / W Wherein, B and V are the volumes (mL) of the blank and Na2S2O3 solutions used in the experiment, respectively; N and W are the molar concentration of the Na2S2O3 solution and the mass of the extracted oil (g), respectively.

[0071] like Figure 3 As shown, the peroxide value of the grass carp fillets in Example 5 is smaller, indicating that the deoxygenated bag made using the packaging material obtained in Example 5 has a better effect.

[0072] The applicant believes that this is because the present invention adopts nano iron powder and nano silicon dioxide compound to fill the polypropylene substrate, and after stretching, the nano iron powder and the polypropylene substrate interface are separated to form micropores, and the pore uniformity is extremely high. The nano silicon dioxide and polypropylene combined in the present invention not only have high mutual bonding strength, but also the inorganic nano silicon dioxide and the organic polypropylene substrate are subjected to programmed temperature rise and fall treatment. Due to the large deformation difference between the two, a small gap is formed between the interface, and the micropores and the small gaps cooperate with each other, while ensuring air permeability, it also has good waterproofness. At the same time, the present invention adopts lanthanum oxide and nano silicon dioxide compound to toughen polypropylene, so that the CPP film product not only has good mechanical strength, but also has good transparency, is not easy to damage, effectively ensures good air permeability of the product, and has good anti-leakage powder performance, and at the same time has a simple structure, is easy to use, and is suitable for large-scale promotion and use.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deoxidizer packaging material based on CPP film, characterized in that: It includes an inner film, an outer film, and an oxygen indicator line is arranged at the composite part of the inner film and the outer film; the inner film includes a first CPP film, a plain soft paper and a second CPP film from the inside to the outside; the outer film includes a third CPP film and a PET film from the inside to the outside.

2. The deoxidizer packaging material based on CPP film according to claim 1, characterized in that: The thickness of the first CPP film is 15-35 μm, the thickness of the second CPP film is 15-35 μm, the thickness of the third CPP film is 15-35 μm, the thickness of the PET film is 10-25 μm, and the grammage of the plain soft paper is 30-50 g / m 2 .

3. The deoxidizer packaging material based on CPP film according to claim 1, characterized in that: The PET film is provided with through holes, the diameter of the through holes is 0.38-0.51 mm, and the hole distance between two adjacent through holes is 1.1-3 mm.

4. The deoxidizer packaging material based on CPP film according to claim 1, characterized in that: The first CPP film, the second CPP film and the third CPP film are all prepared by the following specific steps: polypropylene, lanthanum oxide, nano iron powder, nano silicon dioxide, a dispersant and an antioxidant are blended, extruded into a cast sheet, biaxially stretched at 150-165° C. with a stretch ratio of 5-10, treated with an alternating magnetic field for 5-10 seconds, heat-set at 100-108° C. for 1-3 minutes, and cooled.

5. The deoxidizer packaging material based on CPP film according to claim 4, characterized in that: The mass ratio of polypropylene, lanthanum oxide, nano iron powder, nano silicon dioxide, dispersant and antioxidant is 50-70: 0.1-1：1-5：5-15：1-2：1-2。 6. The deoxidizer packaging material based on CPP film according to claim 4, characterized in that: The melt flow rate of polypropylene resin at 230°C and 2.16kg is 6.5-8.5g / 10min.

7. The deoxidizer packaging material based on CPP film according to claim 4, characterized in that: The frequency of the alternating magnetic field is 20-30Hz, and the intensity of the alternating magnetic field is 0.5-0.8T.

8. The deoxidizer packaging material based on CPP film according to claim 4, characterized in that: The dispersant is at least one of microcrystalline wax, polyethylene glycol 800, stearic acid monoglyceride, and vinyl bisstearamide; the antioxidant is at least one of antioxidant 1010, antioxidant BHT, antioxidant TNP, and antioxidant TPP.

9. A production process of a deoxidizer packaging material based on a CPP film as claimed in any one of claims 1 to 8, characterized in that: The method comprises the following steps: attaching an oxygen indicator line on the outside of the inner film, attaching the outer film to the outer sides of the inner film and the oxygen indicator line through an adhesive, compounding with a dry compounding machine, aging, cooling to 15-25°C, keeping warm for 1-2 hours, then heating to 40-60°C, keeping warm for 1-2 hours, cooling down to 30-40°C, keeping warm for 1-2 hours, and returning to room temperature.

10. The production process of deoxidizer packaging material based on CPP film according to claim 9, characterized in that: During the cooling process to 15-25°C, the cooling rate is 2-4°C / min; during the heating process to 40-60°C, the heating rate is 1-2°C / min; during the cooling process to 30-40°C, the cooling rate is 5-10°C / min; during the recovery process to room temperature, the heating rate is 0.1-1°C / min.

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