WS/T 585-2018Hygienic requirements of student’s schoolbag in primary and middle school (English PDF)

4.1 Structure of the schoolbag

The style of the bag should be a shoulder bag that is longer than the width, as shown in Figure 1. The size of the bag should meet the requirements of Table 1. In Model 1 and Model 2 the front and side of the bag (0°, 45°, 90°) are equipped with a reflective material of at least 20 mm wide, and the shoulder strap should be at least 20 mm wide and 50 mm long.

Reflective material. The back of the bag should have a supporting function, and the supporting material can be a polyurethane cotton or a polyvinyl chloride foam which meets the hygienic requirements.

Wait. Models 3 and 4 can be worn with belts and chest straps. The comfort and other aspects of the bag must meet the requirements of QB/T 2858.

Description.

1--bags;

2--bag cover;

3--back of the bag;

4--bag belt;

5--the bottom of the bag;

6--in front of the bag;

7--the side of the bag;

8 -- the length of the bag;

9 -- the width of the bag;

10 -- The height of the bag.

Figure 1 Schematic diagram of the shoulder strap student bag structure

4.2 The main size of the bag and the range of student height the main dimensions of the four model bags and the applicable range of student height are shown in Table 1.

Table 1 Main dimensions of four models of school bags and student height range

School bag model bag high Mm Long book Mm Book width Mm Student height range Cm 1 420 320 160 >=166.0 2 380 300 140 144.0~165.9 3 330 300 120 128.0~143.9 4 300 280 100 < 128.0 Note. The allowable error range for dimensions is ±5mm.

4.3 Bag weight

The weight of the bag is 0.5kg~1.0kg, the small model is lighter, and the larger model can be heavier.

4.4 Limitation of harmful elements in schoolbags

4.4.1 Limitation of formaldehyde content

The formaldehyde content of the fabrics and accessories used in the bag should not exceed 300mg/kg, and the test method is carried out according to GB/T 2912.1.

4.4.2 Maximum number of migratable elements

The maximum limit of the migratable elements in the bag material is shown in Table 2. The detection method is performed according to GB 6675...

Table 2 Maximum number of migratable elements

The unit is milligrams per kilogram Element maximum limit element maximum limit 锑Sb 60 chrome Cr 60 Arsenic As 25 lead Pb 90 钡Ba 1000 Mercury Hg 60 Cadmium Cd 75 Selenium Se 500

4.5 Mark

The product (or packaging) should have the product name, production unit name, address, trademark, date of manufacture or batch number, and the standard number.

The school bag produced according to this standard, the permanent mark attached to the schoolbag, should indicate the material, specifications, the range suitable for the height of the student, the standard Number, or have instructions for washing and instructions for use.