Some standard content:
FZ/T71001--2003
This standard replaces FZ/T71001-1991 "Combed wool knitting yarn" and FZ/T71003-1991 "Combed wool type chemical fiber knitting yarn". This standard is not equivalent to the International Wool Bureau standard TWCY1-2000 "Yarn". The superior product level in the standard is equivalent to the international advanced level, and the first-class product level is equivalent to the international general level. Compared with FZ/T71001--1991 and FZ/T71003-1991, the main changes of this standard are as follows: the two standards "Combed Wool Knitting Yarn" and "Combed Wool-type Chemical Fiber Knitting Yarn" are merged into one standard; - Scope of application: Applicable to combed pure wool, wool blended knitting yarn and non-wool fiber wool-like knitting yarn; The requirements for product safety are added to the technical requirements; - Product grades are divided into three grades: superior, first-class and second-class; The intrinsic quality and appearance quality are used as the basis for product grading. In the physical index evaluation, the single yarn breaking strength index is changed to the assessment of single yarn breaking strength, and the assessment of strength variation coefficient and yarn even hook variation coefficient are added for superior products. The linear density, twist and other indicators are appropriately tightened, and the loop length deviation rate and oil content rate indicators are cancelled; the color fastness is uniformly assessed, and the sweat resistance and friction resistance indicators of pure wool and wool blended products are appropriately improved; some indicators in the appearance quality evaluation are tightened and the relevant provisions are simplified; there are more detailed supplementary provisions for the fiber content of pure wool products; the content of the inspection rules and packaging marks is appropriately simplified and supplemented. Appendix A and Appendix B of this standard are normative appendices, and Appendix C is an informative appendix. This standard is proposed by the China National Textile and Apparel Association. This standard is under the jurisdiction of the Wool Textile Branch of the National Technical Committee for Textile Standardization. This standard is drafted by the Beijing Wool Textile Science Research Institute. The main drafters of this standard are: Chen Jihong, Sun Shouchun, Li Lirong. The previous versions of the standards replaced by this standard are: -FJ 382-1979, FZ/T 71001-1991. FJ 382-1979, FZ/T 71003—1991. 1
1 Scope
Combed wool knitting yarn
FZ/T 71001--2003
This standard specifies all technical characteristics of combed wool knitting yarn, including technical requirements, test methods, inspection rules, packaging and marking. This standard is applicable to the quality identification of combed pure wool, wool blended knitting yarn and non-wool fiber wool-like knitting yarn. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB250 Grey scale for evaluating color change (GB250-1995, idt ISO105/A02:1993) GB5296.4 Instructions for use of consumer products Instructions for use of textiles and clothing GB/T5706 Textile terminology (wool part) GB9994 Standard moisture regain of textile materials
FZ/T01053 Identification of fiber content of textiles FZ/T20015.6 Classification, naming and numbering of wool products Yarn FZ/T70001 Test methods for knitting and plaiting yarn 3 Technical requirements
Technical requirements include safety requirements, grading regulations, and evaluation of intrinsic quality and appearance quality. 3.1 Safety requirements
The safety of combed wool knitting yarn should meet the requirements of relevant mandatory national standards. 3.2 Grading Rules
The grades of combed wool knitting yarn are evaluated on a batch basis according to the test results of internal quality and appearance quality, and the lowest item is used to determine the grade. They are divided into superior, first-class, and second-class products. Those below the second-class product are substandard products. 3.3 Intrinsic Quality Rating
3.3.1 Intrinsic quality rating is evaluated on a batch basis according to physical indicators and color fastness, and the lowest item is used to determine the grade. 3.3.2 The rating of physical indicators is in accordance with the provisions of Table 1. Table 1
Content/(%)
Wool content of pure wool products
Permitted fiber content of blended products
Deviation (absolute percentage)
Deviation rate of large skein weight/(%)
Deviation rate of linear density/(%)
Coefficient of variation of linear density CV/(%)
Coefficient of variation of twist CV/(%)
Not higher than
Not higher than
Superior products
First-class products [Second-class products
See Appendix A for details
When the content of a certain fiber in the finished product is less than 10%, the absolute value of its content deviation shall not be higher than 30% of the marked content
FZ/T 71001---2003
Single yarn breaking strength/(cN/tex)
Strength variation coefficient CV/(%)
Pilling/grade
Yin uniformity variation coefficient CV/(%)
Not less than
Not higher than
Not less than
Table 1 (continued)
Superior productsbzxz.net
Not higher than See Appendix A
Note: Linear density, twist and strength in the table are all assessment indicators for ply yarns. First-class products
Second-class products
(27.8×2)tex and below are 4. 0
3.3.3 The evaluation of color fastness shall be in accordance with the provisions of Table 2. First-class products are allowed to have one item lower than half a grade; products with two items lower than half a grade or one item lower than one grade shall be downgraded to second-class products; products lower than second-class products shall be downgraded to substandard products. Table 2
Lightfastness/grade
Washing fastness/grade
Perspiration fastness/grade
Water fastness/grade
Abrasion fastness/grade
1/12 standard depth (dark color)|| tt||≤1/12 standard depth (light color)
Color change
Fluff staining
Cotton staining
Color change
Fluff staining
Cotton staining
Color change
Fluff staining
Cotton staining
Dry friction
Wet friction
Not less than
Not less than||t t||Not less than
Not less than
Not less than
Superior product
3—-4
First-class product
3—4 (dark color 3)
Note: For wool blended products, cotton staining should be changed to staining of the same type of fiber as the main non-wool fiber in the blended product; wool staining of non-wool fiber pure or blended products should be changed to staining of other main non-wool fibers. 3.4 Evaluation of appearance quality
The evaluation of appearance quality includes the evaluation of physical quality and appearance defects. 3.4.1 Evaluation of physical quality
Physical quality refers to appearance, feel, yarn and color. The evaluation of physical quality is based on batches. During inspection, each batch is evaluated by comparing the sealed samples. Those that meet the sealed samples of superior products are superior products; those that meet the sealed samples of second-class products are first-class products; those that are obviously worse than the sealed samples of first-class products are second-class products; and those that are seriously worse than the sealed samples of first-class products are substandard products.
3.4.2 Evaluation of appearance defects
The evaluation of appearance defects is divided into the evaluation of appearance defects of hanks and cheeses and the evaluation of appearance defects of fabrics. For the description and measurement method of appearance defects, see Appendix B.
3.4.2.1 Evaluation of appearance defects of hank and cheese yarn Evaluation of appearance defects of hank yarn
3.4.2. 1. 1
Evaluation of appearance defects of hank yarn Take 250g as the unit, inspect each hank and evaluate it according to the provisions of Table 3. 2
Defect name
Big belly yarn
Pigtail yarn, feather yarn
Special-shaped yarn
Mixed with different-colored fibers
Grass clippings, impurities
Wool rolling, felting
Special-shaped curling
Segmental elasticity (twist escape)
Uneven bulking
Superior products
Not allowed
Not allowed
Not charged Allowed
Not allowed
Not allowed
Not allowed
Not allowed
Not allowed
Not allowed
Not allowed
First-class products
Not obvious
Not obvious
Not obvious
Not allowed
Slight within 15 cm
Not obvious
Not obvious
Not obvious
Slight within 25 cm
FZ/T71001--2003
Wool blended and pure chemical fiber products
Chemical fiber products
3.4.2.1.2 The appearance defects of the yarn are evaluated and graded on a per-bobbin basis. All grades are not allowed to have poor forming, spots, color difference, color flowers, wrong yarns and other defects.
3.4.2.2 Evaluation and grade of woven piece appearance defects
3.4.2.2.1 The appearance defects of the woven piece are evaluated and graded on a batch basis. Ten large skeins (boils) are selected from each batch. Each skein (boiler) is knitted into a 20cm×30cm wide skein with a single weft. Ten skeins (boils) are knitted into a piece and graded according to the provisions of Table 4. Table 4
Defect Name
Thick and thin
Tight twisted yarn
Uneven yarn
Thick and thin
Uneven color mixing
Note: The standard samples in the table refer to the first-class standard samples. 3.4.2.2.2 Provisions for grading fabrics:
Superior products
Not lower than the standard sample
Not allowed
Not lower than the standard sample
Not lower than the standard sample
Not lower than the standard sample
Not lower than the sealed sample
Not lower than the sealed sample
First-class products
Not lower than the standard sample
Not lower than the standard sample
Not lower than the standard sample
Not lower than the standard sample
Not lower than the standard sample
Not lower than the standard Sample
Not lower than sealed sample
Not lower than sealed sample
Second-class product
Significantly lower than standard sample
Significantly lower than standard sample
Significantly lower than standard sample
Significantly lower than standard sample
Significantly lower than sealed ... The samples shall be randomly selected from different parts and different colors of the same variety and batch number. The samples for color fastness shall include all the colors of the batch. 4.2 The number of sampling tests for physical indicators shall be as specified in Table 5. Table 5
Test items
Number of tests per skein (skein)
Total number
Line density
Note: The number of sampling tests for other items shall be as specified in the corresponding test method standards. 4.3 Each single test method shall be implemented in accordance with FZ/T70001. 5 Inspection rules
5.1 Appearance quality inspection conditions
Single yarn strength
5.1.1 The inspection light source shall be based on natural northern light. If light inspection is adopted, two 40W fluorescent lamps shall be used with lampshades on them. The distance between the lamp tube and the inspection object shall be 80cm±5cm.
5.1.2 The fabric piece is a single weft plain needle organization, and the needle loop density specifications shall be as specified in Table 6. Table 6
Linear density/tex（Nm）
50 X2(20°/2)
38. 5X2(26*/2)
31. 2X2(32°/2)
27.8×2(36°/2)
9～11needles
Horizontal/
Vertical/
（needle/10cm）
（row/10 cm）
100±4
Note: The yarn count not listed in the table shall refer to the fabric with similar count. 5.2 Acceptance rules
5.2.1 The receiving party shall inspect the incoming goods according to this quality standard. Linear density/
tex(Nm)
23. 8×2(42*/2)
20. 8X2(48°/2)
17. 9 ×2(52*/2)
16. 7 X2(60°*/2)
12~14 needles
Horizontal/
(needle/10 cm)
Vertical/
(row 10 cm)
104±5
110±5
118±5
130±5
5.2.2 The supplier shall provide the receiver with the internal quality test report. If the receiver needs, the test may be carried out according to the test method specified in this standard. 5.2.3 The payee and payee shall convert the official weight of knitted wool yarn according to the official regain rate, and the weight deviation rate shall be implemented according to the contract between the supply and demand parties. 5.2.4 The number of appearance quality samples for delivery and acceptance shall be at least 1% (not less than 25kg) per batch, and shall be randomly selected from different parts and different color numbers. The rate of non-conforming products shall not exceed 5%. 5.3 Determination of batch inspection results
5.3.1 The internal quality shall be comprehensively evaluated according to the inspection results of physical indicators and color fastness to determine whether the internal quality of the batch of products is qualified (where color fastness is determined separately according to different color numbers). 5.3.2 The appearance quality shall be comprehensively evaluated according to the physical quality of the appearance and the appearance defects. If the rate of non-conforming products in appearance quality is 5% or less, the appearance quality of the batch of products shall be determined to be qualified; if the rate of non-conforming products is more than 5%, the appearance quality of the batch of products shall be determined to be unqualified. 5.3.3 Comprehensively evaluate the inspection results of internal quality and appearance quality, and determine whether the batch of products is qualified or not based on the lowest item. 5.4 Re-test
When there is any objection to the acceptance, re-testing can be carried out. The number of samples for re-testing should be doubled, and the re-testing result is the final result. 4
6 Packaging and marking
6.1 Packaging
6.1.1 The packaging of knitting wool yarn should ensure that its quality is not damaged and is suitable for transportation and storage. 6.1.2 Each package should contain knitting wool yarn of the same variety, grade, batch number and cylinder number. 6.2 Marking
FZ/T 71001—2003
6.2.1 The marking of knitting wool yarn shall be implemented in accordance with GB5296.4. Among them, the classification, naming and numbering shall be implemented in accordance with FZ/T20015.6; the fiber content marking shall be implemented in accordance with FZ/T01053; the relevant provisions on the fiber content of pure wool products are shown in Appendix A. 6.2.2 Each large skein of knitting yarn should be affixed with one inspection certificate and one cylinder number certificate; the small package should indicate the product number, color number, cylinder number, grade, weight, etc. 6.2.3 Each cone of yarn should have a label, and the label should indicate the product name, product number, batch number, color (cylinder) number, etc. 6.2.4 The outer packaging of knitting yarn should have the following markings: product name, product number, batch number, package number (box number), color number, cylinder number, grade, weight, raw material fiber content, manufacturer name, production date, etc. 7 Others
If the supply and demand parties have other requirements, they can be implemented according to the contract provisions. 5
FZ/T 71001-—2003
A.1 Relevant provisions on fiber content of pure wool products Appendix A
(Normative Appendix)
Several supplementary provisions
A.1.1 Pure wool products without technical or decorative non-wool fibers: The wool fiber content should be 100%. Its fiber content can be marked as 100% wool.
A.1.2 Pure wool products containing technical or decorative non-wool fibers: A.1.2.1 Finished products with 20.8 tex and below (48 Nm and above) are allowed to contain 5% or less of reinforcing non-wool fibers. A, 1.2.2 Finished products are allowed to contain 5% or less of characteristic non-wool fibers. A.1.2.3 Finished products are allowed to contain 7% or less of decorative non-wool fibers. A.1.2.4 The total amount of technical and decorative non-wool fibers shall not exceed 7%. A.1.2.5 For pure wool products containing technical or decorative non-wool fibers, the fiber content label may be marked as "pure wool". Note 1: Technical non-wool fibers refer to reinforcing fibers (such as polyester and nylon) used to improve spinning performance and durability, or special fibers (such as spandex and antistatic fibers) used to increase certain properties. Note 2: Decorative non-wool fibers must be visible and decorative fibers. A.2 Coefficient of variation of yarn uniformity (CV, %) The assessment indicators for superior products are as shown in Table A.1. Table A.1
Line density
(16°)
(20*)(22*)
(26*)
(30°)
(32°)
(36°)
(42°)
(48°)
(60*)(70°)
(80°)
A.3 Appearance Physical quality seal and defect seal refer to the production seal determined by the production department or the product seal confirmed by both the supply and demand parties. A.4 Color difference and cylinder difference shall be inspected according to the color card or standard sample, and shall be compared with GB250, not less than 3-4 levels, and the same batch shall be controlled in the same direction. A.5 The public moisture regain of textile materials shall be implemented in accordance with GB9994. 6
Appendix B
(Normative Appendix)
Description of appearance defects and measurement methods
B.1 Spot defect: The yarn is partially stained. Including yellow spots, white spots, color spots, rust stains, oil stains, glue stains, etc. FZ/T71001-2003
B.2 Description of defects such as hair pieces, braided yarn, multiple strands, missing strands, double yarn, tight twisted yarn, seersucker, bow yarn, rolled wool, felt, elastic section, grass clippings, color flowers, and hair particles shall be implemented in accordance with GB/T5706.
B.3 Big belly yarn: The yarn diameter is more than twice that of normal yarn, forming a date pit shape. B.4 Feather yarn: The yarn surface forms a feather shape due to the insertion of flying hairs. B.5 Special-shaped yarn: Including multiple strands, missing strands, double yarn, elastic yarn, seersucker, bow yarn, twisted yarn, etc. Special-shaped yarns that are less than one circle are counted as one circle. B.6 Twisted yarn: The twist of the combined yarn is partially too tight, forming a curled shape. B.7 Impurities: such as dandruff, polypropylene yarn, etc.
B.8 Special-shaped curl: Due to poor shaping of chemical fiber after spinning, local concentrated curl is produced after dyeing. B.9 Rod mark: Improper rod distance adjustment during dyeing or other factors cause poor coloring or imprinting at the contact point between the yarn and the dye rod. B.10 Mixed fibers of different colors: Fibers of other colors are mixed into the yarn. B.11 Bottom exposure: Plain blended wool yarn, the color of unit fibers is different in depth. B.12 Uneven bulking: Chemical fiber bulking yarn is partially visible and not hooked. B.13 Color gap: The gap with different colors on the woven sheet. B.14 Uneven color mixing: Fibers of different colors are mixed and not hooked. B.15 Uneven yarn: The thickness of the short segment of the yarn is not hooked, and cloud spots of different depths appear after weaving. B.16 Thickness gap: The yarn is uneven in the long segment, the difference in thickness is too large, and obvious thick and thin segments are formed after weaving. B.17 Color difference: The color of the yarn is different. B.18 Number of knots: The number of knots in a small skein of superior and first-class products shall not exceed half of the number allowed in a large skein. FZ/T71001—2003
Appendix C
(Informative Appendix)
Technical conditions for representative products
Table C.1 is the technical conditions for some representative products of combed wool knitting yarn. Table C.1
Composition of large skein
Number of small skeins
Number of small skein loops
Loop length/cm
Weight of large skein/g
Twist/(twist/m)
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