GB/T 22796-2021Bedding (English PDF)

5.2 Filler quality, appearance quality, process quality

5.2.1 Under the natural northern light or fluorescent lamp, the illuminance of the test bench surface shall be no lower than 600lx; and the illuminance shall be uniform. The inspector's eyes are about 60cm away from the product; and the inspector shall inspect with his eyes and hands.

5.2.2 The deviation rate of specifications and dimensions shall be carried out as follows:

a) Tool: steel ruler.

b) Flatten the product on the test bench; level it gently by hand; so that the product is in a natural expansion and contraction state. Use a steel ruler to measure the quarter and three quarters of the length and width of the entire product, accurate to 1mm. Among them, pillows, cushions only measure the size of the pillowslip. Calculate according to Formula (2), and the calculation result is rounded-off to 1 digit after the decimal point according to

GB/T 8170. Where: L - deviation rate of specification and dimension; L0 - indicated value of the specification and dimension of product, in mm; L1 - actually-measured value of specification and dimension of product, in mm.

5.2.3 Skew shall be implemented according to GB/T 14801.

5.2.4 Color difference and dyeing defect shall be evaluated according to the grey scale for color change specified in GB/T 250.

5.2.5 The filler uniformity shall be carried out by the inspector touching the product with both hands by force.

6.1 Judgment rules

6.1.1 The intrinsic quality, appearance quality and process quality of a single product shall be rated according to the lowest item in Tables 1, 2, 3 and 4 respectively; and the comprehensive quality shall be rated according to the lowest among intrinsic quality, appearance quality and process quality...

6.1.2 The judgment of intrinsic quality batch shall be carried out according to Table 5; and the judgment of appearance quality and process quality batches shall be carried out according to Table 6. The judgment of comprehensive quality batch shall be assessed according to the lowest grade in the sampling inspection of intrinsic quality, appearance quality and process quality.

6.1.3 After sampling inspection, if the unqualified number is less than or equal to Ac, the inspection batch shall be judged to be qualified; if the unqualified number is greater than or equal to Re, the inspection batch shall be judged to be unqualified.

6.2 Sampling scheme

6.2.1 The sampling scheme for inspection of intrinsic quality can refer to Table 5. A.2.1 Appearance defects and measurement methods A.2.1.1 Broken defects: defects in which one or more yarns are broken or the fabric structure is incomplete. A.2.1.2 Cracked yarn: a section of yarn that is obviously thinner due to partial breakage of the yarn. A.2.1.3 Poor printing: improper registration, wrong color printing, poor penetration, uneven color depth on both sides, color matching, deviation, etc., which affect the appearance. A.2.1.4 Local grin-through: those with poor pilling of the velvet and bald spots causing local grin-through of the bottom. A.2.1.5 Poor shearing: poor shearing and cutting. A.2.1.6 Streak: The velvet has different reflective streaks or bump marks. A.2.1.7 Spots: oil, dirt, color and rust stains on the velvet surface that affect the appearance; measure the maximum length, and calculate the scatter by accumulation. A.2.2 Description of defect degree A.2.2.1 Unobvious: refers to the relatively vague defects, which can be vaguely seen by the inspector, not easy to be found by ordinary consumers, and do not affect the appearance and use. A.2.2.2 Slight: it means that the defect itself has a relatively obvious boundary, which can be felt by touch or seen directly, which slightly affects the appearance and use.