Reasonable choice of pesticide packaging containers

1. Solid pesticides - wettable powder, powder and granules

① Small packages, when the capacity does not exceed 3 kg, generally available off-the-shelf packaging, such as bags, pouches, dry cans, jars, glass or plastic wide-mouth bottles.

a. The bottom and sides of the bag must be sealed against leakage, the upper part of the opening for loading, after loading the drug, must be tightly sealed to prevent leakage of the agent. A standard heat sealer is usually used for heat and pressure sealing. Bags are generally made of multiple layers of material. The inner layer is a polyethylene film, which contributes to the final closure, is an ideal water barrier and is resistant to a wide range of chemicals, and must not be less than 0.02 mm thick. Where a leak-proof sealing closure is required after filling, the polyethylene film must be 0.05 mm thick.

b. Dry containers and tanks are sealed at the bottom and open at the top for filling. Dry containers are steel containers, generally cylindrical or rectangular in shape, made of cardboard and wrapped with a layer of polyethylene or other material, such as aluminum foil, to enhance the isolation properties. Tanks are generally cylindrical or rectangular in shape and are made of tin-plated iron - a thin sheet of steel that is tin-plated on both sides. Generally speaking, tin-plated iron has a good resistance to environmental and chemical factors adverse effects of performance, and thus become a useful packaging material, although occasionally vulnerable to corrosion, but as long as the internal coating of corrosion-resistant materials, you can achieve corrosion-resistant purpose. Of course, this anti-corrosion material can only be used for cylindrical cans. If necessary, the outer surface of the tank can be painted or varnished. Applicable to dry goods cans and cans of a wide range of closures, for solid pesticides, the ideal closure is of course, can move the lid, you can also use the threaded lid, the mouth of the can cans can be fitted with tin-plated iron or plastic sieve, in order to control the amount of medication to use.

c. Glass or plastic wide-mouth bottles consist of a base or body with an opening at the top for filling, and are usually available in standardized models. Although glass wide-mouth bottles are not easily corroded by pesticides, they are rarely used for solid pesticides because they are fragile; polyethylene plastic wide-mouth bottles are widely used because of their good resistance to moisture and breakage. If the quality of the packaging is taken into account, wide-mouth bottles can also be made of other types of plastic. Glass wide-mouth bottles and plastic wide-mouth bottles should be threaded cap, unless another equivalent performance of the cap can be selected.

② large package, especially the capacity of 10 to 30 kg of large packages, you can choose cardboard bags, cardboard drums, plastic drums, steel drums, or corrugated cardboard boxes.