Research on Blister Packaging Technology of Ordnance Maintenance Equipment

The packaging of ordnance maintenance equipment is an important part of equipment support. It runs through the whole process of production, storage, transportation and use of equipment. It involves the loading and unloading, transportation, storage, distribution, and use of equipment. It directly affects the technical support effectiveness of equipment, and is the achievement of military equipment "two-tenths of strength. "(20%: the establishment of a system, into a system; two forces: combat capabilities, support capabilities) one of the elements of construction. In accordance with the military strategic principles and field requirements of the new era, ordnance maintenance equipment must implement the requirements of "storage supply base, transport containerization, management informationization, and protection of field operations." To achieve the “four modernizations” requirement, it is of military, social, and economic benefits to conduct research on the comprehensive technology of ordnance maintenance equipment packaging.

I. Cleaning before equipment packaging (including rust removal), drying and protection

1, cleaning

Cleaning is the first important part of packaging. In order to ensure that the ordnance maintenance equipment has good cleanliness before packaging to ensure the quality of the packaging, it should be based on the characteristics of the equipment, the degree of surface contamination, surface processing accuracy, and the shelf life and environmental conditions (temperature, humidity, airborne contaminants, etc.) The proper cleaning agent and cleaning process are used to thoroughly clean the equipment to remove dust, oil, residue, sweat, and other dirt on the surface of the product.

1 Cleaning Agents Cleaning agents are classified into two major categories: petroleum and organic solvent cleaning agents and water-based cleaning agents. It can also be subdivided into petroleum solvents, halogenated hydrocarbon solvents, alkaline solutions and non-ionic surfactants. After comparing and repeating the experiments, the Ordnance metal cleaning agent was selected by Ordnance maintenance equipment cleaning. This cleaning agent is a new type of metal detergent developed from non-ionic surfactants, builders and corrosion inhibitors. It has the advantages of strong decontamination ability, non-volatile, stable solution, non-flammable, non-toxic, inexpensive and energy-saving. It is a water-based cleaning agent vigorously developed at home and abroad.

2 cleaning process and methods Cleaning process is: cooking oil → degreasing → cleaning.
Cleaning methods: There are many cleaning methods. The ordnance maintenance equipment uses a surfactant cleaning method. The comparison of the cleansing methods between the national military standard and the US military standard is shown in Table 1.

Table 1 Comparison of China's Military Standard and US Military Standard Cleaning Methods

GJB-145 code (China military standard) MIL-P-166 code (US military standard) Cleaning method
Q-1 C-1 Cleaning by any method
Q-2 C-3 Solvent Cleaning - C-5 After solvent cleaning and then hand sweat cleaning - C-7 Halogenated hydrocarbon solvent vapor degreasing
Q-3 C-8 Hand Sweat Cleaning
Q-4 C-9 Alkaline Cleaning
Q-5 C-11 electrolytic cleaning
Q-6 C-12 Emulsion Cleaning
Q-7 C-14 Steam Cleaning - C-15 Blast Cleaning - C-16 Liquid Grinding
Q-8 - Water-Based Cleaning Agent Cleaning
Q-9 C-19 Ultrasonic Cleaning
Q-10 C-17 Abrasive Jet - C-18 Steam Degreasing followed by Hand Sweat Cleaning

If there is rust before cleaning the equipment, rust removal is still required before cleaning. The rust removing agent is: XH- neutral degreasing agent, XH-two-in-one rust removing agent, XH-steel normal temperature indigo agent and XH-dehydrated oil; its technological process: degreasing → derusting → indigo → eucalyptus oil .

2, drying

The equipment is dried immediately after washing to remove the cleaning liquid, moisture and residual moisture on the surface and inside of the equipment. There are many drying methods, commonly used drying method, compressed air drying method, infrared drying method, drying method and drain (dry) method.

After scientific analysis, repeated trials, ordnance maintenance equipment used a cheap and hot drying method. The specific operation is: placing the equipment to be dried in a drying box or drying room with temperature regulation and air blowing, and using electric heat or a heat source of superheated steam in the pipeline to remove the moisture and cleaning liquid from the equipment. It is required that all parts in the drying oven or drying room should be evenly heated and well ventilated, and the moisture and cleaning liquid gas after drying can be brought out of the box as soon as possible.

Second, the use and characteristics of blister packaging

Blister packaging is a method of wrapping a product between a blister formed with a transparent plastic sheet and a base plate (made of cardboard, a plastic film or sheet, aluminum foil or a composite thereof).

Blister packs are primarily used for the packaging of pharmaceutical products such as tablets, capsules, and suppositories, and are now widely used in the packaging of food, cosmetics, stationery, toys, gifts, tools, and electromechanical parts. After being used in the field of military packaging, it is mainly used for packing single ordinance, width and height of less than 220mm, 75mm, 48mm ordnance maintenance equipment.

Blister packs have the following features:

1, good protection. Because the blister pack has a good seal, it can be waterproof, moisture-proof, dust-proof, and rust-proof, extending the protection period. At the same time to create the conditions for vapor phase rust-proof packaging, with vapor phase anti-rust agent, better rust prevention effect.

2, transparent and intuitive. Transparent blister is easy to see the shape and size of the equipment; the substrate can print basic information such as equipment code, name, specification part number and bar code, which is convenient for the equipment inside the package.