QB/T 4791-2015Creamer (English PDF)

6.1 Raw material and accessories

Before inspection and production, inspect or verify according to relevant standards. The limit of harmful substances is tested according to GB/T 2912,

GB/T 17592, GB 19340, GB 20400, GB 21550 and other standards.

6.2 Appearance quality

In natural light, use the senses and combined with the ruler to measure. The division of ruler is 1mm.

6.3 Color fastness to friction

Fabrics are inspected according to GB/T 29865. Friction head diameter is

16mm. Furs are inspected according to QB/T 2790. Leather, recycled leather, artificial leather/synthetic leather shall be inspected in accordance with Annex

A.

The sample to be measured for the thickness of the surface coating shall be measured according to GB/T 22889.

6.4 Accessory quality

Perform manual inspection of clutch locks, connectors, hooks, broken fasteners, shelf openings, etc. One opening-closing is recorded as once.

- Mechanical code lock sets the password by dialing the password wheel.

And use the set password to turn the password lock on and off. Combine each digit randomly. Perform unlocking, locking 200 times, respectively.

For key lock, insert the key with hand and insert it into the lock keyway to unlock and lock the lock. Electronic code lock uses an electronic key to unlock and lock the lock.

- Key lock, electronic code lock. use non-dedicated key to start test 10 times.

Mechanical password lock uses any 10 groups of different garbled to start the test.

- Connector, hook, magnetic fastener, shelf mouth. one opening-closing is recorded as once; test 200 times separately.

6.5 Zipper durability

7.5.2 Determination rules for batch products

When three testing samples all meet the requirements for qualified products, this batch of products shall be qualified. If one (and more) fails, it shall perform double sampling for re-inspection. When the re-inspection is qualified, this batch of products shall be qualified.

8.1 Marks

8.1.1 The products inspected qualified shall have the following marks.

- (manufacturer or distributor) name, address and contact telephone;

- when necessary, product’s instructions for use (maintenance);

- when necessary, the outer packaging of product shall include identifications of product name, item number, quantity, storage and transport (protection).

8.1.2 Product label shall comply with the followings.

- shall mark. product name, product reference number, trademark, item number (model number), body material, certification (inspection);

- when a certain type of top layer material used in a single product exceeds

20% of the total area of the top layer material used in the product, it shall mark;

- when more than 90% of the top layer material is used in the first layer of leather (except for the first layer of transfer film leather), it can be marked as " genuine leather";

- if the main surface layer material is made of split leather, the word "split" shall be marked;

- when the coating thickness or film thickness of the leather substrate is greater than the thickness of the leather substrate, it is not appropriate to label “leather” separately, which can be labeled as “composite material”;

- imported products shall be marked with origin.

8.2 Packaging

The inner and outer packaging of the product shall be made of suitable packaging materials to prevent damage during transport and storage.

8.3 Transport and storage

Annex A (normative)

Test method for rotating friction color fastness

A.1 Testing environment

Before the test, the sample shall be placed for adjustment at a standard environment of which the temperature is (20±2)°C, the relative humidity is (65±5)% for at least 24h. The test shall be performed at such temperature and under such humidity.

A.2 Testing instruments and materials

A.2.1 Rotating friction tester

Shall include the following components.

- testing platform (metal as the best) that can fix the sample;

- vertically rotating shaft for fixing circular felt at a speed of (150±5) r/min;

- apply a force of (24.5±0.5) N or (7.1±0.2) N to the rotating circular felt;

- counter.

A.2.2 Testing materials

Round combed felt with holes in the middle shall meet the following requirements.

- outer diameter is (25±1) mm, inner diameter is (3.0±0.5) mm;

- thickness, determined according to Table A.1;

- density is (190±20) kg/m3.

Table A.1 – Testing requirements for combed felt thickness

Thickness/mm Down pressure/presser foot size Sample

6.5±0.5 (49±5) kPa/(10±1) mm Cut felt pad or uncut sheet

5.0±0.5 (2.0±0.2) kPa/(19±10) mm Cut felt pad

A.3 Sample preparation

- When the sample can be flatly fixed on the testing platform, the sample can

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