First, the selection of pesticide packaging materials and forms
1. Plastic Packaging Replaces Glass Packaging Two-thirds of pesticides produced in China are liquid formulations. For a long time, liquid pesticides have been packaged in glass bottles. However, glass bottles have the disadvantages of high breakage rate, poor sealing of the glass bottle, and inconvenient metering. Plastic containers have the advantages of light weight, durability, accurate measurement, and low overall packaging cost. "Plastics for glass" has become an irreversible trend in the development of pesticide packaging.
2. Water-soluble packaging bags Water-soluble plastic packaging bags are made of water-soluble packaging films with low alcohol content of polyvinyl alcohol as the main raw material. It is used to package a certain amount of pesticide preparations. When used, it only needs to put the required dose of medicine packet into the quantitative water. The packaging bag will dissolve on its own, and the medicine will be scattered in the water. On the one hand, users do not need direct contact with pesticides to avoid the occurrence of poisoning; on the other hand, the measurement is accurate and avoid excessive or insufficient use of pesticides. Since the raw material is a thin film, the quality is very light, which not only effectively reduces the transportation cost, but also does not cause problems such as easy leakage due to loose sealing of the stopper and difficulty in recovery. This kind of simple, safe and environmentally friendly packaging application has a very broad prospect.
3. The composition of high-resistance pesticide bottle pesticides is very complex, and more aggressive organic solvents such as toluene and xylene are used. The use of ordinary polyethylene bottles to store pesticides often leads to problems such as penetration of pesticides from the walls of containers, increased moisture content of contained pesticides, cracking and deformation of containers. Therefore, high barrier plastic containers including multi-layer co-extruded bottles and fluorinated bottles have attracted the attention of manufacturers.
4. The inner layer of the multi-layer co-extruded bottle is nylon or polyvinyl alcohol, both of which have excellent gas permeation resistance, and the anti-osmosis effect is increased by several dozen times than the ordinary polyethylene bottle, so that the storage period is greatly extended. The inner wall of the fluorinated bottle is a fluoroplastic layer such as PTFE, which can prevent the penetration of organic solvents and the degradation of the product. In terms of barrier effect, multi-layer co-extruded bottles of 100 ml or less are better than fluorinated bottles, but the larger the specifications, the stronger the fluorinated bottle is.
5. Bottles with built-in gages Currently, most farmers do not use gages when applying pesticides, and measure the caps of bottles used for medicine when taking medicines. However, the bottle cap does not have a metering function, and the actual amount of the drug taken is mostly high. The application of plastic bottles with built-in gauges solves this problem. When in use, simply squeeze the vial by hand to allow the liquid to rise into the person's training device through a catheter. After reaching the required dose, open the lid of the meter and pour the drug directly into the water. The medicament does not come into contact with the operator's hands during the process from the vial to the sprayer, which is both convenient and safe.
Second, pesticide packaging label
The Regulations of the People's Republic of China on the Administration of Pesticides stipulates that in addition to the pesticide registration number, production approval number, and product implementation standard number, the name of the pesticide, the name of the company, the active ingredient of the pesticide, its content, weight, product performance, Toxicity, use, use, date of manufacture, expiration date and precautions.
1. Pesticide Packaging Common Symbols Pesticide symbols marked on pesticide packages and pesticide use manuals are generally composed of 3 letters of the alphabet, some representing pesticide formulations and some representing pesticides and concentrations. In terms of pesticide formulations, ">C" represents EC, which is the most common pesticide symbol, such as "dimethoate" 401; C refers to 40% dimethoate EC. DL means oil, such as "Li Ke Ning OL" is Liqueurine oil; "ES" is emulsion, latex, emulsion, emulsion; "WG" is water dispersible granules; "LS" is seed treatment solution. In terms of pesticide measurement and concentration, "kg/ha" means kilograms per hectare; "ppm" means the concentration in parts per million, which is now generally expressed as 10-6 or mg/kg; "TLM" is a measure of the toxicity of pesticides to fish. The force-sized finger "LD50" represents lethal or median lethal dose. There are also specific terms for pesticides, such as "TM" for registered trademarks; "GLC" for gas chromatography; "IPM" for integrated control.
2 Marking should be plain and accurate The contents of the pesticide label should be plain, accurate and scientific, so that the user can understand and master the correct use of the product; the content should be authentic and consistent with the product registration approval.
3 The name of the pesticide product should be shown in eye-catching characters and located prominently on the entire label. In addition, the full name and content of the common name of each active ingredient contained in the product, and the corresponding international common name should also be marked.
4. Pesticide product quality assurance period can be marked in any of the following three forms: indicate the production date (or batch number) and quality assurance complained that the product batch number and effective date of the complaint indicate the product lot number and expiration date. The labels of the individual products should be marked with the date of manufacture and the date of disassembly.
5 There are three main types of pattern marks on pesticide packaging. One is the pesticide toxicity label, and its labeling should be in accordance with the relevant provisions of the national pesticide toxicity classification mark and label. The other is the special micro-color label tape of the pesticide type. Usually, a colorless pesticide is added to the bottom of the label and is parallel to the bottom edge. Types of special color marking tapes to indicate different types of pesticides, such as "green" herbicides, "red" for insecticide (defective, mollusc) agents, etc. There is also a pictogram for convenient and safe use of pesticides. It is usually printed in black and white and placed at the bottom of the label.
Source: Golden Pesticide Network