GB/T 3873-1983General specifications for products packaging of communication equipments (English PDF)

2.2.4 Shockproof packaging

2.2.4.1 Shockproof packaging shall be used for products that are delicate, sensitive, or fragile in structure. The shockproof package shall meet the following requirements after the shockproof project test. a. The structure of the packaging container shall be free of deformation and functional damage. b. There shall be no mechanical damage on the surface of the product and its parts. c. The various indicators of the product shall be within the tolerance and the scope of the commissioning after commissioning.

2.2.4.2 According to the characteristics of the product, choose suitable shockproof materials. Commonly used anti-bedding materials mainly include. corrugated cardboard, expandable polystyrene foam, rubber, sponge, plastic air cushion, polyurethane foam and springs.

2.2.5 Anti-rust packaging

2.2.5.1 For products that need anti-rust treatment and metal surfaces that are easy to rust, anti-rust treatment shall be carried out in accordance with the relevant provisions of product anti-rust treatment. There shall be no rust during the validity period of the product packaging.

2.2.5.2 Anti-rust materials shall have the following requirements. a. It shall have good adhesion to the metal surface, non-corrosive, and easy to remove. b. The commonly used anti-rust materials mainly include. neutral sodium benzoate anti-rust paper, No. 19 anti-rust paper, 201 anti-rust grease and so on.

2.2.6 Anti-mold packaging

2.2.6.1 For products that need anti-mildew treatment, anti-mildew packaging shall be carried out.

2.2.6.2 Anti-mold materials shall have the following requirements. a. The anti-mold material shall be extremely toxic to humans, and has a strong inhibitory or bactericidal effect on mold. b. The anti-mold materials shall have a good anti-mold effect on product quality.

2.3 Types and requirements of packaging containers

2.3.1 Wooden boxes

2.3.1.1 Commonly used types of wooden boxes are medium and small wooden boxes, plywood wooden boxes, large wooden boxes and lattice wooden boxes.

2.3.1.2 Requirements for wooden boxes

The wooden boxes used for rain-proof packaging and moisture-proof packaging shall ensure that the joints are tight. b. The moisture content of the wooden box material shall not exceed 20%.

2.4 Requirements for other packaging containers

2.4.1 All other materials that meet the requirements of 2.2 and 2.3 can be used as packaging boxes or structural parts of packaging boxes, such as steel, reinforced concrete, magnesite concrete, and so on.

2.4.2 The magnesite concrete chassis shall meet the requirements of the "Magnesite concrete packaging chassis" issued by the State Administration of Materials.

4.1 Box marks

The marks on the surface of the packing box include the shipping mark, storage and transportation operation mark and box number mark.

4.1.1 The shipping mark generally includes the following. a. Product model, name and quantity; b. Exit-factory number and box number (or contract number); c. External dimensions of the box (length × width × height). the unit is cm; d. Gross weight. the unit is kilograms; e. Packing date. year, month; f. Arrival (port) and recipient; g. Departure station (port) and shipper.

4.1.2 Storage and transportation operation marks

It shall be in accordance with the provisions of GB 190-73 "Dangerous goods packaging marks" and GB 191-73 "Packaging storage and transportation indication marks". b. For packages that need to be lifted, if the center of gravity of the product deviates significantly from the center of the package, the words "center of gravity" and "lift from this" shall be marked on the corresponding position of the package.

4.1.3 Box number marks

When the product is packed in multiple boxes, the box number is expressed in fractions. The numerator is the box number, and the denominator is the total number of boxes. The main box should be No. 1 sub-box.

4.2 Marking methods

The marks on the surface of the box shall be made of non-fading coated bars or ink, and shall be accurately, clearly and firmly marked on the two end faces or sides of the box. Packages that cannot be directly painted with the mark can be ordered or marked with a sign at an obvious place. The number of mark plates for each package shall be no less than 2.

4.3 Accompanying documents

4.3.1 The accompanying documents shall generally include the following. a. Instruction manual; b. Certificate of conformity; c. Packing list; d. Technical documents.

4.3.2 Accompanying documents can generally be packaged in plastic bags or paper bags, and placed in the packaging box. When the products are packed in multiple boxes, the accompanying documents shall be placed in the main box. Each sub-box only contains the packing list of this box.

A.1 Rain test

A.1.1 Test purpose

Spray water on the package at the specified time under normal temperature conditions. Test the resistance of the package to rainwater.

A.1.2 Test equipment and site

The test site is a flat ground with wooden grids to allow water to circulate.

The area covered by the rain shall be at least 50% larger than the bottom of the package to be tested. b. The rain shower device shall be able to spray 100±20 L/m²·h of water. Make the water fall vertically on the top surface of the package 2m away from the spray nozzle.

A.1.3 Test method

A.1.3.1 Rainfall calibration

The amount of rain must be calibrated before the rain test. Spray water fully and evenly. b. The amount of rain is calibrated by using several identical containers with an opening area of 0.25~0.50m² and a depth of 0.25~0.50m evenly placed on the ground. Cover an area of at least 25% of the test land area. Then, open the nozzle. Measure the time required for the first and last container to fill and overflow. The time required for the first container shall not exceed the rate of 120 L/m²·h. The time required for the last container shall not be less than the rate of 80 L/m²·h.

A.1.3.2 Test steps

Place the test package on the center of the spray surface of the test site.

Continuously spray for 1h as required. b. After the test, open the box and check that the packing box and gasket materials shall meet the rain-proof packaging requirements in 2.2.2. […]