166results about How to "Good anti-caking performance" patented technology

The invention relates to a method for preparing anti-hardening granular ceramic iron-carbon micro-electrolysis filler from industrial wastes. The method comprises the steps of mixing iron powder, lignin, red mud and clay, which are used as raw materials, in a mass ratio of (4-5):(2-3):(1-3):3, then pelleting, and burning under a reducing atmosphere. The particle size of the prepared anti-hardening granular ceramic iron-carbon micro-electrolysis filler is 4-6mm. When used for sewage treatment, the anti-hardening granular ceramic iron-carbon micro-electrolysis filler can improve the biodegradability of wastewater in a short time and reduce the CODCr (Chemical Oxygen Demand Cr) and toxicity of the wastewater, and is difficult to be hardened in use, long in service cycle and simple to maintain. The industrial wastes are used as raw materials, so that energy resources are saved, and the treatment of wastes with processes of wastes against one another is realized.

The invention discloses an antiblocking agent for macroelement water-dissolvable fertilizer, as well as preparation and application of the antiblocking agent. The antiblocking agent is formed by the formulation of surfactant, polymer and water by the mass ratio of 12-20:2-4:100, wherein the surfactant is C12-C18 sodium salt or sylvite of alkylbenzene sulfonate, the polymer is cross-linked polyvinylpyrrolidone, and the antiblocking agent is used for preventing granular or bump macroelement water-dissolvable fertilizer from blocking. By utilizing the disintegration property of the biodegradablematerial, namely the cross-linked polyvinylpyrrolidone, the antiblocking agent improves the antiblocking property of the fertilizer, overcomes the defect that the common high-polymer antiblocking agent causes white pollution due to incapability of biodegradation, in addition, the price is low and the usage is saved.

The invention belongs to a chemical additive, and relates to an anti-caking additive with slow release effect. The anti-caking additive with slow release effect is mainly characterized in that organicmodifiers with a certain weight percentages such as hydrocarbon compounds, grease and the like are evenly mixed with powdered materials such as calcium silicate and fly ash at a certain temperature by a wet method, and subject to dehydration, drying and crushed into a powder product, and the product is evenly added to various granulated chemical fertilizers for use, the product prevents chemicalfertilizers from caking after adding the product to the fertilizers in package and storage. The anti-caking additive has slow release effect after fertilization, and enhances fertilizer efficiency. The anti-caking additives has advantages of no toxic and side effect, no pollution, low cost, less usage and better anti-caking performance compared with other like products and has certain slow releaseeffect on the fertilizers. The anti-caking additive is also applicable to anti-caking for other grain products.

The invention relates to an anti-blocking agent of a fertilizer. The anti-blocking agent is prepared from the following components in percentage by weight: 45-85% of natural ore powder, 5-20% of a modifier and 10-50% of modified plastic, wherein the natural ore powder is in a layered structure and has water swellable disintegration capacity, and the modifier is one or a mixture of more of a silane coupling agent, a phosphate coupling agent, a titanate coupling agent, stearic acid and salts thereof, oleamide, high alcohols and C14-C22 alkylamine. The anti-blocking agent of the fertilizer provided by the invention has the characteristics of convenience in addition to use, good anti-blocking effect and no block of the fertilizer stored for over half a year. The anti-blocking agent of the fertilizer is strong in universality and suitable for compound fertilizers such as urea-based, nitryl, chlorine-based and sulfenyl compound fertilizers or similar particle fertilizers.

The invention discloses an anti-caking agent for a powdery chemical fertilizer. The anti-caking agent for the powdery chemical fertilizer is prepared from oyster shell micro powder, talcum powder and an anionic surfactant. The anti-caking agent for the powdery chemical fertilizer comprises the following chemical components in percent by mass: 30-65% of calcium carbonate, 0.5-3.5% of stearic acid, 0.5-4.5% of sodium dodecyl benzene sulfonate, 15-35% of silicon dioxide, 10-20% of magnesium oxide and 5-10% of calcium oxide. The anti-caking agent for the powdery chemical fertilizer has strong adsorbability and good anti-caking property, is easy to be degraded, non-pollution, convenient to use and low in usage amount, is rich in nutrient elements, such as calcium and magnesium, required by crop growth, can be combined with an oily anti-caking agent to be applied, especially has a more obvious effect on a high-nutrient chemical fertilizer, and is lower in comprehensive cost; a main ingredient oyster shell is available and cheap, has a nano micropore structure, contains multiple amino acids and trace elements, and also has the effect of alleviating soil hardening.

The invention discloses a method for preparing refined salt without an antitackiness agent. The method comprises the following processing steps of: collecting and treating brine, evaporating, crystallizing, washing salt slurry, drying, cooling and screening; when needing to iodize, uniformly adding 3 to 5 mass percent solution of potassium iodate into a wet salt production line after dehydrating the salt slurry to make the iodine content of finished product salt be between 20 and 50mg / kg. In the method, no antitackiness agent is added into the salt, so the salt fully meets the standards of national GB2760 'Hygienic Standard For Uses of Food Additives' and NY / T1040 'Green Food-Edible Salt', and has good anti-agglomerating effect, regular crystal form and uniform granularity; the Mg<2+> content is 40 mg / kg and is far lower than the stipulation of the NY / T1040 'Green Food-Edible Salt' standard; and a product has no obvious agglomeration phenomenon after being stored for 12 months.

The invention relates to a preparation method for a particle compound fertilizer. The method comprises the following steps of: wetting or heating and mixing a basic fertilizer and a filler to obtain a plastically-enhanced material with high moisture content or high temperature; preparing a mixed material into uniform particles through extruding machinery; rounding the surfaces of particle materials; drying (e.g., the step can be eliminated when the temperature for preparing the particle materials is high); and cooling and sieving to obtain the particle compound fertilizer. Compared with the conventional extruding method, the method has the advantage that: abrasion on extruding equipment is reduced. Compared with the conventional agglomerating method, the method has the advantages that: material returning multiple in a production process can be reduced, and production energy consumption and production cost are lowered. Product particles are uniform, are round in appearance, and have high pressure resistance and agglomeration resistance. In production process, waste emission is reduced, and the field operation environment is remarkably improved.

The invention discloses a nitrogen and phosphorus removal material and a preparation method thereof, which belongs to the technical field of water pollution control. The nitrogen and phosphorus removal material comprises the following raw materials in parts by mass: 30 to 60 parts of reduction iron powder, 5 to 20 parts of active carbon powder, 20 to 40 parts of bentonite, 0.5 to 5 parts of a catalyst, 5 to 20 parts of a pore-forming agent, and 2 to 25 parts of a phosphorus removal agent. The nitrogen and phosphorus removal material can be used for removing nitrogen and phosphorus in water, nitrate nitrogen is chemically catalytically reduced to efficiently and selectively generate an expected product nitrogen, so that the secondary pollution is avoided, the effluent does not need to be treated, the process is simple, and the treatment cost can be reduced.

The invention provides an antichlor used for purifying reforming regeneration gas. The antichlor is prepared from, by mass, 85-90wt% of a composite oxide carrier and 10-15wt% of alkaline earth metal oxide. The composite oxide carrier is a mixture formed by Al2O3, SiO2 and ZrO2 at the mass ratio of 80:(80-100):(1-3), the specific surface area of the composite oxide carrier is 310-340 m<2> / g, and the total acid content is 0.31-0.45 mmol / g. According to the antichlor, composite oxide with a specific composition is adopted as the carrier, the total acid content of the carrier can be easily controlled within a proper range so that the bonding force between metal active components and the carrier can be regulated and controlled to be moderate, accordingly, it is guaranteed that the antichlor has both high chlorine capacity and high anti-hardening capability, and thus the antichlor has broad industrialized application prospects.

The invention relates to the production technology of granular fertilizers, and specifically relates to a magnesium nitrate-calcium nitrate complex salt type compound fertilizer and a preparation method thereof. The magnesium nitrate-calcium nitrate complex salt type compound fertilizer is characterized in that the total mass percent of magnesium nitrate and calcium nitrate in the compound fertilizer ranges from 50% to 90%, the mass percent of crystal water in the compound fertilizer ranges from 10% to 50%, and the mass ratio of magnesium nitrate to calcium nitrate is (3.5-0.1):1. Compared with the prior art, the magnesium nitrate-calcium nitrate complex salt type compound fertilizer and the preparation method thereof have the beneficial effects that (1) the magnesium nitrate-calcium nitrate complex salt type compound fertilizer is far better than compound fertilizers obtained by doping and pelletizing by a mechanical pressing method in free-running property and anti-caking property, the caking time of the product is above 30 days and therefore, the product can be used very conveniently; (2) the preparation method is lower in cost than a process of batch crystallization as well as mechanical mixing and pelletizing, and also applicable to continuous large-batch production, and therefore, a convenient condition is provided for automatic process control.

The invention relates to a water-based fertilizer anticaking agent and a preparation method thereof. The water-based fertilizer anticaking agent comprises the following components in percentage by mass: 10-50% of water-soluble high polymer, 5-20% of surfactant, 10-20% of low-carbon alcohol and 10-75% of water. The invention is applicable to preparation and application of the powdery or crystalline chemical fertilizer anticaking agent. Compared with the traditional process based on oil / power coating, the water-based fertilizer anticaking agent prepared by the method has the advantages of low consumption and better anticaking effect, and well solves the problem that the powdery or crystalline chemical fertilizer can not prevent caking by oil / power coating. Meanwhile, the production and preparation technique of the anticaking agent is simple to operate and easy to implement, and is free of pollution and convenient for industrial production.

The invention relates to an ammonium chloride anti-blocking agent. The anti-blocking agent comprises maleic anhydride-acrylic polymer, potassium polyacrylate, potassium polyaspartate and dodecyl diphenyl ether sodium disulfonate. The anti-blocking agent has the advantages of low consumption, low cost, good performance, high efficiency, no pollution and the like, and is easy to use. The invention also relate to an application method of the anti-blocking agent in ammonium chloride production, namely the anti-blocking agent is diluted into 1.5 to 3 percent solution by using water, the solution is uniformly atomized and sprayed on an ammonium chloride conveyer belt in back of a separator, and the mass percentage of the added anti-blocking agent is 30-120*10<-6>g / L. When the anti-blocking agent is added into the dry or wet ammonium chloride by adopting the method, the blocking rate reaching the standard in 8 months can be ensured under an open air environment in atrocious weathers.

The invention discloses a biochemical fertilizer for organic crops and a production method thereof. The biochemical fertilizer for organic crops comprises the following components in parts by weight: 20-45 parts of carbon phosphorus potassium, 10-25 parts of organic fertilizer ferment, 25-35 parts of humic acid, 20-30 parts of polyaspartic amino acid, 15-25 parts of calcium magnesia phosphate fertilizer, 25-45 parts of dicyandiamide, 10-45 parts of ammonium molybdate heptahydrate, 10-35 parts of plant additive, 20-45 parts of soil conditioner, 10-15 parts of peptone, 20-35 parts of granular urea and 5-10 parts of rare earth additive. The biochemical fertilizer for organic crops solves problems of fertilizer selection, fertilizer matching, fertilizer application area, plant fertilizer application amount recalculation, control on fertilizer application amount and the like which are met by people, has the characteristics of simple technique, favorable use effect and the like, and is especially suitable for fertilizer application for organic crops. The biochemical fertilizer for organic crops is beneficial to upgrading soil organic matters, activating the original humus, enhancing the replacement amount of soil cations, enhancing the soil activity and improving the soil absorbability, and has obvious effect on shock-absorbing capacity.

An epoxy resin having excellent curability and high crystallizability; an epoxy resin composition having excellent blocking resistance; and a cured epoxy resin excellent in heat resistance, moisture resistance, and adhesion. The epoxy resin is one obtained by reacting a 4,4'-dihydroxydiphenyl sulfide compound with epichlorohydrin, wherein the content of molecules in which the number of repetitions, n, is 0 is 90 wt.% or higher and the content of monoepoxy molecules is 2 wt.% or lower. For example, the epoxy resin is obtained by reacting 2,2'-dimethyl-5,5'-di-tert-butyl-4,4'-dihydroxydiphenyl sulfide with excess epichlorohydrin in the presence of an alkali metal hydroxide.

The invention relates to an instant slow-release nitrogen fertilizer and a preparation method thereof. The preparation method comprises the following steps: generating urea and formaldehyde prepolymer by utilizing urea and formaldehyde under heating and continuous stirring conditions, and adding organic acid A into prepolymer to regulate the pH value of the prepolymer to 2-3; then, adding a catalyst B and a surfactant C, and quickly stirring to generate solid slow-release nitrogen fertilizer with low molecular weight; adding a modifying synergist D into the solid low-release nitrogen fertilizer with low molecular weight to mix and grind until 95% of the particles are smaller than 1-3 microns, thereby preparing the water-soluble slow-release nitrogen fertilizer. The instant slow-release nitrogen fertilizer prepared by the preparation method is an excellent slow-release nitrogen fertilizer which is relatively small in molecular weight, easier to dissolve, lower in price, better in anti-caking performance, simpler in processing process, and lower in energy consumption as compared with a conventional common ureaformaldehyde slow-release nitrogen fertilizer.

The invention belongs to the technical field of silicon dioxide, and particularly relates to a large-pore-volume high-adsorption silicon dioxide additive and a preparation method thereof. A sodium silicate solution and a dilute sulfuric acid solution are adopted, an anionic surfactant is added before reaction, and the large-pore-volume high-adsorption silicon dioxide additive is prepared through the processes of reaction, aging, sufficient reaction with hot water, filter pressing washing, spray drying and the like. The large-pore-volume high-adsorption silicon dioxide additive provided by theinvention has an oil absorption value of 250-300 / 100g, a particle size of 40-80 microns, an average pore diameter of 10-20 nm and a pore volume of 1.0-2.5 cm < 3 > / g, has relatively high pore volume and adsorption performance, and can bear more active ingredients in a feed preparation process. Meanwhile, the large-pore-volume high-adsorption silicon dioxide provided by the invention has good stability, caking resistance and fluidity.

In the prior art, the expanded ammonium nitrate explosive has disadvantages of low density, small volume power and easy agglomeration. For solving the disadvantages in the prior art, the present invention provides a modified expanded ammonium nitrate explosive with advantages of stable quality, simple production and low cost. The modified expanded ammonium nitrate explosive provided by the present invention has characteristics of good detonation sensitivity, stable detonation velocity, easy charging, no agglomeration, high charge density and large volume power. The technical scheme of the modified expanded ammonium nitrate explosive is that: the modified expanded ammonium nitrate explosive is prepared through mixing the following raw materials, wherein the raw materials comprise, by weight, 80-90% of expanded ammonium nitrate, 3-5% of hull, 2-3% of diesel fuel, 1-2% of % composite wax, 0.10-0.12% of qctadecyl amine, 0.2-0.5% of calcium fluoride and 2-12% of porous granular ammonium nitrate.

Disclosed is a resin composition provided with excellent mold releasability and anti-blocking properties. Specifically disclosed is a 4-methyl-1-pentene polymer-containing resin composition which contains 0.01-10 parts by mass of a 4-methyl-1-pentene polymer (B) per 100 parts by mass of at least one resin (A) selected from the group consisting of thermoplastic resins and thermosetting resins. The 4-methyl-1-pentene polymer-containing resin composition is characterized in that (B1) the 4-methyl-1-pentene polymer (B) has a limiting viscosity [Eta] as measured in a decalin solvent at 135 DEG C within the range of not less than 0.01 dl / g but less than 0.50 dl / g.

Provided is a method for culturing dendrobium officinale. A shading greenhouse is adopted, and a culture matrix is prepared through the raw materials, by weight, 3-5 parts of fragmentary bark, 3-5 parts of fragmentary red bricks, and 1-3 parts of fragmentary tree leaves. When the culture matrix is used, the raw materials are evenly mixed, and 1000-times potassium permanganate solutions or 1000-times thiophanate methyl solutions are used for even spraying sanitization. The water retention rate and the drought resisting rate of the culture matrix are high, the fertilizer efficiency is mild and lasting, the fragmentary red bricks have strong hardening resisting performance, growth of the root system of dendrobium officinale is facilitated, the unexpected technical effect is achieved, and culturing quality of dendrobium officinale is greatly improved.

The invention discloses a microemulsion type water-soluble fertilizer anti-blocking agent and a preparation method thereof. The anti-blocking agent comprises the raw materials of a surfactant and anti-blocking oil, wherein the surfactant comprises one or a plurality of anionic surfactant, nonionic surfactant and zwitterionic surfactant; the HLB of the surfactant is 7-14; the anti-blocking oil comprises one or a plurality of vegetable oil, modified vegetable oil, vegetable wax and aliphatic ester. The preparation method of the anti-blocking agent comprises the step of preparing basic anti-blocking oil and the step of preparing an anti-blocking agent. The prepared microemulsion type water-soluble fertilizer anti-blocking agent is good in anti-blocking effect; after a water-soluble fertilizerwrapped with the prepared microemulsion type water-soluble fertilizer anti-blocking agent is dissolved in water, the microemulsion type water-soluble fertilizer anti-blocking agent can be completelydissolved in water together with the water-soluble fertilizer; floating oil and precipitate are avoided; the solution is uniform in phase and is smoothly and uniformly sprayed during use; pollution precipitating in a farmland is avoided; and the soil and the soil texture cannot be damaged.

The invention discloses a water-soluble nitro-compound fertilizer anti-blocking agent. The water-soluble nitro-compound fertilizer anti-blocking agent comprises the components in percentage by mass: 8-40 percent of sodium tripolyphosphate, 10-35 percent of lauryl sodium sulfate, 15-35 percent of sodium dodecyl benzene sulfonate and 8-30 percent of polyacrylamide. A preparation method of the water-soluble nitro-compound fertilizer anti-blocking agent comprises the following steps: grinding the formula raw materials of the anti-blocking agent to be 300 meshes to obtain anti-blocking agent powder. A using method of the water-soluble nitro-compound fertilizer anti-blocking agent comprises the steps that when used, the water-soluble nitro-compound fertilizer anti-blocking agent is fully mixed with a compound fertilizer through a coating machine, 2-8kg of water-soluble nitro-compound fertilizer anti-blocking agents are added in the compound fertilizer per ton. The water-soluble nitro-compound fertilizer anti-blocking agent is easy and convenient to operate, convenient for industrial production, less in using amount and low in cost, moreover, and the pollution to environment is avoided; in addition, the water-soluble nitro-compound fertilizer anti-blocking agent has a good anti-blocking effect, and the loose degree of the powder soluble fertilizer reaches 90 percent or more.

Disclosed are a superabsorbent polymer having improved anti-caking properties and a method of preparing the same, and the superabsorbent polymer having improved anti-caking properties includes a superabsorbent polymer, microparticles, and water, and to improve anti-caking properties of the superabsorbent polymer, the temperature of the superabsorbent polymer or water upon addition of water or the aging time upon stirring is adjusted, thereby preventing caking of the particles.

The present invention discloses a processing method of sea-buckthorn oil compound garlic powder for seasoning. Firstly, garlic cloves are divided, the garlic cloves are peeled, the peeled garlic cloves are cut into slices to obtain garlic slices, the garlic slices are rinsed, the rinsed garlic slices are dehydrated using a centrifuging machine, the dehydrated garlic slices are crushed evenly to obtain pre-dehydrated garlic powder, liquid obtained by the dehydration and rinsing liquid are mixed, the mixture is respectively subjected to a filter bag filtration treatment, a ceramic membrane filtration treatment and a nano-filtration membrane concentration treatment to obtain nutrient concentrate, the nutrient concentrate is mixed with sea-buckthorn oil to obtain sea-buckthorn oil compound nutrient concentrate, then the pre-dehydrated garlic powder and the sea-buckthorn oil compound nutrient concentrate are mixed and stirred evenly, the mixture is vacuum-dried, and the vacuum-dried mixtureis ground into the sea-buckthorn oil compound garlic powder for the seasoning. The processing method can make full use of nutrients of garlic and reduces waste of resources. The processed garlic powder has advantages of being high in nutritional value, good in anti-oxidation and anti-caking ability, and convenient for consumption.

A gas-barrier material which has a gas-barrier layer comprising a polycarboxylic acid polymer. It is characterized in that the gas-barrier layer includes a surface layer which has isocyanate-group-derived chemical bonds formed therein, and that the surface layer has a nitrogen content of at least 1 at.% based on the sum of carbon, oxygen, and nitrogen in the surface layer. This gas-barrier material, which employs the polycarboxylic acid polymer which is a polymer having a high tendency to combine with hydrogen, has excellent blocking resistance regardless of the degree of crosslinking.

The invention discloses an ammonium chloride anti-blocking agent and a preparation method thereof. The ammonium chloride anti-blocking agent is composed of a film-former, a dispersant, a crystal control agent and water. The preparation method comprises the following steps: adding water into a reaction kettle with a stirring device and a heating device, after the water is heated, adding the film-former, and carrying out heat preservation until the obtained mixture is completely dissolved and shown in a clear and transparent mode; then, reducing the temperature to room temperature, adding the dispersant and the crystal control agent, and completely and uniformly stirring the obtained mixture, so that a transparent anti-blocking agent is obtained. The anti-blocking agent has the advantages of good hydrophilicity, no dust and no pollution, and is simple to prepare, low in cost, convenient to add, little in use amount and good in anti-blocking effect, and a human body is not damaged.

The invention discloses a high-slow-release anti-hardening organic fertilizer for planting grapes. The organic fertilizer contains the following raw materials: cow dung, corn straws, furfural residue,peat, a straw fermentation bacterial agent, medical stone powder, shell powder, chitin, fish bone meal, sodium amino dicarboxylate, magnesium nitrate mud, urea phosphate, borax, ammonium chloride, potassium chloride, diammonium phosphate, potassium nitrate, calcium humate, magnesium humate, boric acid, ammonium nitrate, calcium dihydrogen phosphate, zinc-amino acid chelate, zinc sulfate, manganese sulfate, zinc acetate, molybdenum sulfate, an anti-hardening modified aid and a modified slow-release filling. The organic fertilizer for planting the grapes has excellent slow release performance and anti-hardening performance and is capable of supplying rich nutrients to the grapes, so that the growth efficiency of the grapes is improved, and the survival rate of the grapes is increased.

The invention relates to a novel renewable fish tank sterilizing and oxygen-releasing bag; the novel renewable fish tank sterilizing and oxygen-releasing bag is designed by taking a silver phosphate nano-powder material having high quantum yield as a main raw material; nano-silver and oxygen can be generated under the irradiation of visible light; with the assistance of swimming of fishes, water is sufficiently contacted with sterilization components, so that sterilization of water quality is realized; furthermore, oxygen can also be released; because of being constrained in a semipermeable membrane, nano-silver generated by photolysis cannot be lost in a fish tank; silver phosphate has the excellent characteristics of softening water quality, dispersing dirt, buffering an alkaline agent, preventing from caking and the like; silver phosphate can be reacted with amine substances in fish feces, so that phosphate is generated; and therefore, nutrients are provided for aquatic plants in the fish tank. After being used for a certain time, the sterilizing and oxygen-releasing bag can be taken out and is renewable in hydrogen peroxide, so that the sterilizing and oxygen-releasing function is obtained again.

The invention relates to biological organic fertilizer taking livestock excrements as raw materials. The biological organic fertilizer comprises the following raw materials in parts by weight: 80 to 100 parts of a microbial fermentation composition, 15 to 20 parts of urea, 5 to 10 parts of calcium hydrogen phosphate and 3 to 5 parts of potassium chloride, wherein the microbial fermentation composition is obtained by performing medium-temperature aerobic composting treatment on a microbial mixed bacterial agent, a combined enzyme agent, an organic raw material and water according to the weightratio of (1-1.5):(0.5-1):100:(10-20) at 25 to 50 DEG C; the microbial mixed bacterial agent comprises bacillus subtilis, bacillus megatherium, bacillus mucilaginosus, bacillus cereus, bacillus licheniformis, aspergillus niger, aspergillus oryzae and bacillus thuringiensis; the combined enzyme agent is a mixture of protease, cellulase, glucanase, pectinase and lipase; and the organic material is amixture of livestock excrements and straws. According to the design, stink and damage to soil are not liable to occur, and the composting period is short.

The invention provides an anti-hardening strip packed BOPP thin film for ultra-smooth cigarettes and a preparation method thereof. The anti-hardening strip packed BOPP thin film is prepared from an upper surface layer, a core layer and a lower surface layer which are directly coextruded and composited. A special silicone smooth master batch and a modified silica anti-adhering master batch are added in the lower surface layer. The lower surface layer uses the high-viscosity silicone bead smooth master batch, a silicone-oil-treated silicon dioxide anti-adhering agent and silica powder with the level being close to the nanometer level, and under the condition that the dosage is less and does not affect the haze, the thin film of an ABA structure is prepared. The normal temperature and high temperature friction coefficients of the anti-hardening strip packed BOPP thin film are increased greatly, the anti-hardening performance of the anti-hardening strip packed BOPP thin film is greatly improved, the original advantage of the low haze is maintained, and the industry problem of core winding and film stripping of customers is solved.