In our country, the consumption of plastic fast food box is very big, the plastic fast food box that cannot break down brings to the environment -- "white pollution". The degradable food powder composite paper meal box developed by the company has effectively solved the environmental pollution problem. The composite paper dining box is composed of an intermediate material bonded by an adhesive on the inner and outer layers of paper. The adhesive is composed of edible powder, gelatin, edible whitening agent, edible preservative and water. The intermediate material is composed of grain and plant shells mixed and crushed, expanded and pressed by the expander into pieces and crushed into particles, and shaped by the hot press. The advantage of this kind of product is: can be made into a batch first plank, when hot pressing is formed, and can degrade. According to a survey of gas-phase anti-rust technology, China's annual loss due to corrosion is as high as 280 billion yuan. How to effectively prevent metal corrosion has become a key factor in the transportation of various metal-related products. As a new technology, gas - phase anti - rust packaging has received more and more attention for its simplicity, practicality, safety and effectiveness. Improper preservation is the fundamental cause of mold rust, and gas phase rust prevention can effectively solve the problem of metal rust. Metals are easy to rust due to oxidation in humid environment, and various pollutants in the atmosphere will also have corrosion effect on metal materials. Once the mechanical equipment and parts made of metal materials are rusted, it will affect the normal operation of the machine and equipment. Therefore, the research on rust prevention of metal materials has been a topic of concern to the industry. Metal materials often need to be packed twice in the process of storage and transportation, that is, inner packing and outer packing. In metal packaging, the inner packaging, also known as rust prevention packaging, outsourcing
In our country, the consumption of plastic fast food box is very big, the plastic fast food box that cannot break down brings to the environment -- "white pollution".
The degradable food powder composite paper meal box developed by the company has effectively solved the environmental pollution problem. The composite paper dining box is composed of an intermediate material bonded by an adhesive on the inner and outer layers of paper. The adhesive is composed of edible powder, gelatin, edible whitening agent, edible preservative and water. The intermediate material is composed of grain and plant shells mixed and crushed, expanded and pressed by the expander into pieces and crushed into particles, and shaped by the hot press.
The advantage of this kind of product is: can be made into a batch first plank, when hot pressing is formed, and can degrade.
Gas phase antirust technology
According to the survey, the annual loss caused by corrosion in China is as high as 280 billion yuan. How to effectively prevent metal corrosion has become a key factor in the transportation of various metal-related products. As a new technology, gas - phase anti - rust packaging has received more and more attention for its simplicity, practicality, safety and effectiveness. Improper preservation is the fundamental cause of mold rust, and gas phase rust prevention can effectively solve the problem of metal rust. Metals are easy to rust due to oxidation in humid environment, and various pollutants in the atmosphere will also have corrosion effect on metal materials. Once the mechanical equipment and parts made of metal materials are rusted, it will affect the normal operation of the machine and equipment. Therefore, the research on rust prevention of metal materials has been a topic of concern to the industry. Metal materials often need to be packed twice in the process of storage and transportation, that is, inner packing and outer packing. In metal packing, the inner packing is also called anti-rust packing, and the outer packing is also called transportation packing. The outer packing (large and medium-sized products) is to create the necessary conditions for the lifting, transportation and storage of the packing parts to prevent the rain water from soaking, protect the anti-rust agent and the inner packing from damage, so as to ensure the anti-rust effect of the whole packaging. At present the method that the most commonly used prevents rusting on industry, it is to besmeared on metallic surface prevent rusting oil (commonly known as butter), but because this kind of method prevents rusting oil itself to be able to become ineffective because of oxidation, when removing protective layer, take time, expend labor, neither sanitation nor safety. The use of desiccant rust prevention cost is low, simple operation, safety and environmental protection, the removal of protective packaging is easy, but the effective time is short, and is greatly affected by the environmental temperature. As for the special dehumidification equipment packaging and processing of metal materials, although the anti-rust effect is good, but the cost is high, time-consuming and laborious, complex operation. VCI, which is simple, practical, safe and effective, has attracted more and more attention. As a kind of high-tech anti-rust preservation packaging product technology and concept, binzhou jinchen electronics co., ltd. originated from the military application in the late world war ii. Due to its rapid, simple and low-cost characteristics in the preservation and treatment of industrial equipment rust prevention, especially in line with the requirements of environmental protection, in recent years, more attention has been paid to the rust prevention ability and safety and other issues have been studied and improved in depth, so as to achieve commercial promotion and application of gas phase rust prevention packaging materials. Mechanism and characteristics of gas-phase anti-rust: the gas-phase anti-rust material plays an anti-rust role by containing a gas-phase corrosion inhibitor immersed in it. The gas phase corrosion inhibitors can be sustained at room temperature, gasification, volatilization, slowly evaporates of corrosion inhibitor vapor adsorption on the bare metal surface, thus forming a to the stability of the two molecules thick protective film, the protective film can effectively prevent the oxygen, humidity and other environmental atmosphere of metal corrosion, to produce excellent antirust function. As the molecules of the gas phase corrosion inhibitor are continuously volatilized, they can always be in the state of "saturation" in the closed space, thus achieving long-term and stable anti-rust effect. Due to the corrosion inhibitor molecules are gas state, all-pervasive, no matter how complex the appearance of metal products, still can obtain the ideal anti-rust effect. This new anti - rust mechanism has many incomparable advantages over the traditional anti - rust method. After the metal material packaging or spraying is completed, the molecules of the gas phase corrosion inhibitor start to diverge, and the molecules of the gas phase corrosion inhibitor can permeate into the corner space that cannot be covered by the traditional anti-rust oil. The effective components of the gas phase corrosion inhibitor can be retained for a long time, and the anti-rust protection period of more than 10 years can be achieved. Even if there is water on the metal surface or the outside air is very humid, anti-rust agent can also form a protective film on the metal surface to prevent the metal from corrosion and rust; The anti-rust packaging material made of air permeability and moisture permeability is very low, with waterproof, moisture-proof, oil resistance, resistance to chemical properties. Especially in the packaging of metal materials, mechanical equipment and parts, the use of gas phase antirust agent does not need to apply antirust oil, also do not have to deal with other, greatly simplified the cumbersome steps of corrosion prevention, and vacuum packaging, not only achieve the special anti-corrosion function, but also reduce the cost of packaging, saving labor and materials, improve efficiency. In addition, the special advantage of this anti-rust method is that it can take different methods to achieve flexible operation according to different anti-rust object materials and different requirements of anti-rust period. For example, for materials whose anti-rust term is only 1 week to 1 month, anti-rust solution spraying method can be used to facilitate and quickly achieve anti-rust treatment, or even achieve the purpose of anti-rust without packaging the materials; General sealing and packaging can be carried out for devices with the anti-rust term of 1 to 2 years; For devices with a rust-proof life of up to 10 years, special rust-proof agent formula and aluminum foil composite film bag can be used for sealing packaging. Traditional methods in the use of anti-rust treatment needs to remove the material surface of the anti-rust oil can be used; And use this kind of method, no matter adopt afore-mentioned any kind of way processing, all can purify pack to use immediately, and simple and clean, safe, pollution-free, after using, still can repeat to undertake anticorrosive pack is used. It is because of these advantages that gas-phase anti-rust packaging materials have been widely used.
Selection of gas-phase anti-rust packaging materials:
At present, gas-phase anti-rust materials and anti-rust technology have been widely used in the anti-rust and anti-corrosion treatment of industrial equipment abroad. In particular, with the rise of the information industry in recent years, the technology of IT, electronic products packaging and processing more shows unique advantages. Domestic enterprises have also developed a variety of different gas-phase anti-rust products, has formed a series of anti-rust liquid, anti-rust powder, anti-rust plastic film, anti-rust aluminum foil composite film, anti-rust paper and other products. According to different requirements can be applied to metal products, precision instruments, electronic equipment, petrochemical machinery, pipelines, Marine instruments and equipment, transmission equipment, aerospace instruments and military products rust prevention, corrosion prevention. It is more effective in the preservation of high precision instruments against oxidation and in the treatment of Marine articles against salt corrosion and moisture. The products can be used in the following fields: - military applications: light weapons, heavy weapons, tank engines and accessories, bullets, missiles, etc. - automobiles, ships, aircraft: engines and parts, generators, clutch parts, etc. - machinery: various castings, boiler systems, machinery and spare parts. - electronics: computer, TV, communication equipment parts. - other classes: hand tools, cutting tools, bearings and other metal parts. Due to the special anti-rust mechanism of gas phase anti-rust, different factors should be taken into account in the specific selection, such as: metal product material and its corrosion resistance: for the metal that needs protection, the appropriate VCI packaging material should be selected. Transportation and storage period: determine the specific packaging form, seal or quasi-seal. Environmental conditions for transportation and storage (relative humidity, temperature, pollutants, etc.). General storage environment humidity should not be higher than 85%; Environmental temperature should be higher than 65 ° C, should avoid direct sunlight long-term at the same time, the best store in a cool, ventilated place; During the transportation and storage of gas-phase anti-rust materials, attention should be paid to the integrity of packaging. Avoid contact with acid, alkali, salt and other dirt during storage and transportation; In the case of strong air flow, the packaging should be shielded in addition to sealing; Do not store in industrial flue gas containing HCL, H2S, SO2 or other acidic steam.
