GB/T 41002-2022General specification for children's case and bag (English PDF)

3.3 Hazardous sharp edge

Accessible edges that are likely to cause unreasonable harm to a child during normal use or reasonably foreseeable abuse. [Source: GB 6675.2-2014, 3.24, modified]

3.4 Hazardous sharp point

Accessible points that are likely to cause unreasonable harm to a child during normal use or reasonably foreseeable abuse. [Source: GB 6675.2-2014, 3.25, modified]

3.5 Pulling rope

Ropes, drawstrings, etc. - made of various textile or non-textile materials, of a certain length - designed for adults to pull children to prevent children from getting lost.

3.6 Reasonably foreseeable abuse

Case and bag are used under conditions not recommended by the supplier, or for purposes not recommended by the supplier, which, however, may happen; this is caused by the combination of the case and bag and the normal behavior of children, or only by the normal behavior of children.

Examples: beating, biting, repeatedly opening and closing case and bag, etc. [Source: GB 6675.2-2014, 3.42, modified]

3.7 Pompom

A ball combed and formed from long or multiple strands of fiber or cords winding the center. [Source: GB 6675.2-2014, 3.36]

3.8 Reflective fabrics

Textiles - combined by reflective material with textile base material - which have strong retroreflective performance under the light source. [Source: GB/T 28468-2012, 3.2]

5.1 General

5.1.1 Pattern or LOGO

The pattern or LOGO design on the case and bag shall help guide children to establish correct values and outlook on life, and create a good educational atmosphere.

5.1.2 Ergonomics (backpack)

The design of children's backpacks should take the user characteristics and the use situation into consideration, to achieve the goals of safety, health, efficiency and comfort. The main ergonomic design principles include the following.

-- Human-machine geometric adaptability: The overall appearance of the backpack, and the structural dimensions of the shoulder straps and related accessories shall match the body dimensions of Chinese children of the corresponding age group (GB/T 26158-2010), and should be designed accordingly and adjustably for children of different ages and different school ages, so as to match the body structure of different children.

-- Mechanical load suitability: The designed load-bearing capacity of the backpack and the control force of the control components shall not exceed the children's strength limit; the design of the backpack's structural size, strap position layout, material hardness and cushioning should take into account the children's pressure comfort of the waist, back, shoulders, etc. under the carrying state.

-- Effect on body balance: Maintain carrying stability under static and dynamic states, as well as special usage scenarios.

-- Ease of use: The user interface for opening, locking, adjusting, information display and feedback, terminology and graphic symbols of the backpack shall be simple, easy-to-understand, easy-to-learn, efficient and easy-to-operate.

6.1 Raw materials and accessories

Before processing and production, inspection shall be carried out according to relevant standards.

6.2 Chemical properties

Inspect according to the methods specified in GB 20400, GB 21550, GB 31701, GB 18401.

Short-chain chlorinated paraffins: Leather, fur, and regenerated leather materials shall be tested according to the regulations of GB/T 38405; fabric materials shall be tested according to the regulations of GB/T 40263; artificial leather/synthetic leather and plastic materials shall be tested according to the regulations of SN/T 3814. When the user can prove that GB/T 38405 has the same test results as GB/T 40263 and SN/T 3814 in the determination of fabrics, artificial leather/synthetic leather, and plastic materials, the method can also be used. In the event of disputes or arbitration, the test results of

GB/T 40263 and SN/T 3814 shall prevail.

Phthalates: Leather, fur, regenerated leather, artificial leather/synthetic leather materials shall be tested according to GB/T 22931; fabric materials shall be tested according to

GB/T 20388; plastic materials shall be tested according to GB/T 29608.

6.3 Appearance quality

Under natural light, use visual inspection, sensory inspection and combined measuring scale inspection; the division value of the measuring scale is 1 mm.

6.4 Color fastness to saliva

Perform the test according to GB/T 18886.

6.5 Color fastness to alkali perspiration

Fabric materials shall be inspected according to GB/T 3922. Leather, regenerated leather, artificial leather/synthetic leather materials shall be inspected according to

QB/T 2464.23, and fur shall be inspected according to QB/T 2924.

6.6 Color fastness to rubbing

Leather, regenerated leather, artificial leather/synthetic leather materials shall be inspected according to GB/T 40920, dry rubbed 50 times, and wet rubbed 10 times; fur materials shall be inspected according to QB/T 2790; fabrics, uncoated microfiber materials shall be as specified in GB/T 3920 - taking a group of samples for inspection, in which a rectangular friction head shall be used for uncoated microfiber materials.

6.7 Small components

6.7.1 Removable components

Inspect according to the provisions of 5.2 in GB 6675.2-2014.

6.7.2 Other small components

Any accessories, on the case and bag, that may be picked up by children or bitten by their teeth shall be tested according to the provisions of 5.24 in GB 6675.2-2014 for the reasonable abuse of tension and torsion, after which the small components that have fallen off shall be inspected in accordance with the provisions of 5.2 in GB 6675.2- 2014.

6.8 Pompom

The pompom tensile test shall be carried out according to the provisions of 5.24.6.3 in

GB 6675.2-2014; the pompom test shall be carried out according to the provisions of

6.9 Circular holes in rigid materials

Under natural light, use round rods with a diameter of 6 mm and 12 mm in combination with a measuring scale for visual inspection.

6.10 Filling material

The sensory quality of filling materials shall be inspected by visual inspection and hand feeling.

The seam tensile test of filling materials shall be carried out according to the provisions of 5.24.6.2 in GB 6675.2-2014.

After the seam test, the small components in the filling material shall be subjected to the accessibility test according to the provisions of 5.7 in GB 6675.2-2014.

6.11 Clearances of moving components

Under natural light, use round rods with a diameter of 5 mm and 12 mm in combination with a measuring scale for visual inspection.

6.12 Pulling rope

Under natural light, perform the inspection by visual inspection combined with a measuring scale.

Manually check whether the lock is normal; test 200 times, while opening-and-closing is recorded as 1 time. The switch tests of different types of combination locks are as follows:

-- Mechanical combination lock: Set the password by manually dialing the combination wheel; use the set password to open and close the combination lock; combine the numbers arbitrarily; perform the opening and closing tests separately;

-- Key lock: Hold the key by hand and insert it into the key slot of the lock cylinder along the socket of the lock cylinder to open and close the lock;

-- Electronic coded lock: Use the electronic key to open and close the lock.

6.19.2 Random code test

The random code tests of different types of combination locks are as follows:

-- Mechanical combination lock: Choose any 10 groups of different random codes for testing;

-- Key lock, electronic coded lock: Use a non-special key for 10 opening tests.

6.20 Durability of fasteners

Inspect according to QB/T 5084, for 1 000 times.

6.21 Durability of zipper

Select a zipper with a length of 20 cm, and test it at a frequency of (20±1) times/min; test 200 times, with opening-and-closing recorded as one time. If the zipper length is less than 20 cm, test within the maximum length of the zipper.

6.22 Suture strength

Cut out a piece of suture fabric from the main load-bearing part of the case and bag, where the effective area is (100±2) mm x (30±1) mm [the length of the suture line is (100±2) mm, and the width of the fabric on both sides of the suture line is (30±1) mm], the width of the upper and lower clamps is (50±1) mm, and the spacing is (20±1) mm; use a tensile machine for testing, at a tensile speed of (100±10) mm/min, until the wire or fabric is broken. The maximum value displayed by the tensile machine is the suture strength. If the value displayed by the tensile machine exceeds the specified value of the suture strength, but the sample is not broken, the test can be terminated.

When the product label expressly indicates that the main load-bearing part of the case and bag is the inner layer material, the inner layer shall be sampled for inspection.

Note: When fixing the sample, try to make the center of the suture line direction of the sample be located at the center of the upper and lower clamps.

6.23 Durability of plastic buckle

Inspect according to QB/T 5247, for 1 000 times.

6.24 Corrosion resistance of hardware fittings

Inspect according to QB/T 3826, for a test time of 16 h. As for the zipper puller, only evaluate the zipper pulls.

6.25 Reflective properties

Cut 3 samples of 20 mm x 20 mm from the reflective fabrics in different parts of the case and bag; perform the measurement of the retroreflection coefficient according to the provisions for the relative measurement method in Appendix C of GB 20653-2020.

Take the arithmetic mean of the 3 tested samples as the result, to an integer.

7.1 Batch

An inspection lot is formed by products of the same variety and specifications that are put into production with the same variety of raw materials and produced according to the same production process.

7.2 Exit-factory inspection

Before leaving the factory, the appearance of each batch of products shall be inspected one by one, and the products can only leave the factory after passing the inspection.

7.3 Type inspection

In any of the following situations, 3 pieces shall be randomly selected from the products that have passed the ex-factory inspection for type inspection:

a) When there are major changes in product structure, process and materials;

b) When the production, which has been suspended for more than half a year, is resumed;

c) When the national quality supervision agency proposes to carry out type inspection;

d) Under normal production, type inspection shall be carried out at least once half a year.

The type inspection items are all technical requirements of 5.3 ~ 5.5.

7.4 Determination rules

-- If more than 90% of the surface materials are the top layer leather (except the top layer action leather), it can be marked separately as "leather", and should be marked with animal species (main categories), such as "sheep leather", "pig leather", "cow leather" etc.;

-- If the main surface material is made of split leather, the words "split" should be marked;

-- The main textile material can be marked with "fabric", "textile" and so on;

-- Where the coating thickness or film thickness of the leather substrate is greater than the thickness of the leather substrate, it shall not be separately marked as "leather", instead, it can be marked as "composite material";

-- Imported products shall be marked with the country or region of origin.

8.1.3 Where dangers may be caused under reasonably foreseeable abuse of the product, warnings and warning instructions should be placed in conspicuous positions. The font height of warnings and warning instructions should not be less than (3.7±0.02) mm (size 10.5).

8.2 Packaging

Appropriate packaging materials should be used for the inner and outer packaging of the product to prevent the product from being damaged during transportation and storage.

8.3 Transportation and storage

The transportation and storage of the product shall meet the following conditions:

-- Prevent exposure to the sun and rain;

-- Keep ventilated and dry, moisture-proof, avoid high temperature environment;

-- Keep away from chemical corrosion;

-- Avoid poking and scratching of sharp objects.