Some standard content:
Classification No. Y46
Registration No. 9503-2001
Light Industry Standard of the People's Republic of China
QB/T2536-2001
Wool leather and sheepskin
Published on 2001-11-15
China Light Industry Federation
Implementation on 2002-05-01
QB/T2538-2001
This standard focuses on the characteristics of wool leather and sheepskin, and regulates the wool leather from the following aspects. In order to ensure the overall strength and keep consistent with the international standard, the method of measuring the tear force is adopted, the tear force index is specified, and the tear strength index is used as much as possible: the sampling position is specially specified in the standard. 2) In view of the characteristics of wool leather in actual use, this standard stipulates that the surface and hair of the leather should be subjected to rubbing test to detect the discoloration and color loss that may occur during the use of the product. The color rate test adopts QB1327-1 or the surface color sequence rubbing test method. 3) In order to facilitate the use of both parties, the classification of products is determined according to the characteristics of each industry. 4) This standard is also used for wool leather made by hand-fumed leather, miscellaneous leather, etc. This standard was proposed by the General Business Department of China Light Industry Federation and issued by the National Technical Committee for Standardization of Technical Innovation Industry. This standard was jointly drafted by Shanghai Shendu Decoration Co., Ltd. and Shandong Senjiang Luoying Wang Product Co., Ltd., and the main drafters of this standard are: Wang Ruilan, Liu Bingzui, and Wang Changrong. YYKANKAbzxZ.net
Light Industry Standard of the People's Republic of China
Wool Sheep Leather
QB/T2536—2001
This standard specifies the technical requirements, test methods, grading, inspection rules and marking, packaging, transportation and storage of wool sheep leather.
This standard is applicable to wool sheep leather made by various processes and various coagulants. This standard is also applicable to leather made by processing such as flat leather and fine leather. 2 Reference standards
"The texts included in this standard are generally quoted in this standard and become standard provisions. Except for the time of publication, the original versions are valid. All standards are subject to revision. Parties using this standard should consider the possibility of using the latest versions of the following standards.
QE/T 1264—:991
Q/T1266--:991
Q8/T1267—1991
QB/T 1270—199]
Q3/T 1271-:99]
Q8/1 1277—1991
QB/T1327—1991
Packaging, marking, packaging and transportation of wool products. Physical properties test. Air conditioning of wool parts.
Non-wool product samples. Partial texture and marking.
Determination of the shrinkage temperature of wool.
Determination of pEI value of wool products.
Test method for surface and friction resistance. Q3812.6.-1669
·3 Requirements
Determination of leather oxygen resistance.
3.1 The treatment channel marking shall comply with the provisions of Table 1.
3.2 Sensory requirements
3.2.1 Leather surface
3.2.1.1 The surface is evenly layered, smooth and non-sticky; it does not fall to the bottom, does not flare, does not crack, and does not lint; the color is uniform, the luster is soft and natural, 3.2.1.2 The velvet surface is fine and uniform, with consistent color and a sense of luster. 3.2.2 The body is deep, full, smooth, without oiliness or odor. 3.2. 3. Wool quilt: Full, smooth and fine, loose and clean: no hair, knots, hair loss, cuts: uniform color. Approved by China Federation of Industry on November 15, 2001: Implemented on May 1, 2002. Regulations: Free of charge rate, force, N, color rubbing half degree (at / wet), shrinkage temperature, QB/T2536-2001. Wool Qian Pao Yang Zhuang: 25.-30 (4.9N/mm*) Lambskin, miscellaneous skin: 20~~50 (3.0N/mm*) Diluted (when pH is 3 5~-4.0 4.1 Test method: Take samples from the standard positions specified in Q31257. 4.2 Specified load length ratio: 4.2.1 Test: Carry out in the standard atmosphere specified in QB/T1266. 4.2.2 Test preparation: Take samples from the No. 1 specimen (vertical) and No. 3 specimen (horizontal) specified in Figure 3, Figure 4 and Figure 5 of QR1267--1991. 4.2.8 Measurement and calculation: Carry out according to the provisions of QB/T127. 4.2.4 Result expression: Take the mathematical average of the two specimens' standard load length ratios as the calculation result, and keep the integer of the calculated result. 1. Force
Equipment, the sample size should comply with the provisions of QB/T3B12.6. 4.3.1 Test conditions
Tested in the standard air specified in QB/T1266. 4.3.2 Test preparation
Samples of No. 2 sample (vertical) and No. 4 sample (detailed) are taken according to Figure 3, Figure 4, Figure 3 of Q0/T1267-1991.
4.3.3 Measurement and calculation
Carry out according to the provisions of QB/T3B1266.
4.3.4 Result expression
The average value of the tearing force of the two samples is the calculated result, and the calculated result is usually retained to one decimal place. 4.4 Rubbing color fastness
According to the provisions of QT1327, the color fastness of leather and wool cover is tested separately. -TYKbNBrRAca-
4.5 Shrinkage temperature
According to the provisions of OB/T1271,
4. 6PH, dilution difference
According to the provisions of QB/[127?.
4.7 Benefit requirements
Q8/T2538-21
Under the white light, the distance between the selected energy and the energy consumption shall be checked by the official. 5 Grading
5.1 After the product is tested, it shall be graded according to the ratio of the total strength and available area, which shall be in accordance with the provisions of Table 2. Table 2
Marketable area, %
Available area of internal and external defects, minimum area: m2
(excluding sheepskin and impurities)
High, the defect should not affect the function
Column: Minor defect: refers to the defect that does not affect the internal position of the product, but only affects the appearance, such as slight color change, bright color, fuzziness, uneven color selection, etc.,
52 single defect. First-class products and second-class products should be downgraded by one level. 2 Inspection rules
The same batch of products of the same variety produced by the same batch of raw materials and production time is a batch. 6.2 Factory inspection
3.2.1 Products must be inspected before delivery to the factory, and they can only be shipped after passing the inspection and obtaining a certificate of conformity. 6.2.2 Test objectives
Sensory requirements, color integrity.
6.2.2.1 Sensory requirements
Test in accordance with the provisions of 4.?.
6.2.2.2 Color fastness
Take 3 pieces from the products that have passed the sensory test and test them in accordance with the provisions of 4.4, where the parts to be taken can be any part within the test area.
6.2.3 Qualification judgment
The sensory test shall all meet the requirements of 3.2. In the sensory inspection, if more than 1 piece of the 3 pieces does not contain moisture, repeat the sample. If more than 2 pieces of the other test pieces still do not contain moisture, the batch of products shall be unqualified. 5.3 Type inspection
If the following conditions occur, a type inspection shall be conducted retrospectively: 3
QA/T2536-2201
a) When the product structure, process, or material has a major change; 6) When the product is resumed after a long period of suspension; c) When production is normal, a type inspection shall be conducted at least once every three months: When the national technical supervision agency issues the requirement for type inspection. 8.3.2 Oiliness test
In the short batch of products, three sheets shall be inspected at random: 6.3.3 Qualification determination
6.3.3.1 Single sheet determination principle 1,
If the product does not meet any of the following criteria: color, crack, severe hair retention, pulping, pulping, severe odor, or has a serious defect that affects the quality of the product, the product shall be judged as unqualified. If one of the other technical requirements is not met, the sheet will be deemed unqualified:
6.3.3.2 Principle of whole batch testing
If all three samples are qualified, the batch of products is qualified. If there is one (or more) qualified sample, six samples should be retested. If two (or more) samples are not qualified, the batch of products is judged to be unqualified. The labeling, packaging, transportation, storage, labeling, marking, and receipt shall be in accordance with the provisions of QB1264.
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