FZ/T 54008-2012Polypropylene drawn yarns (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard is a revision of FZ/T 54008-1999.

This standard replaces FZ/T 54008-1999 "Polypropylene Drafting Wire", compared with the original standard, except for editorial changes, the main technical changes as follows.

--- Expanded the scope of application of the standard (see Chapter 1, Chapter 1 of the 1999 edition);

--- Supplementary normative references (see Chapter 2, Chapter 2 of the 1999 edition);

--- Added a chapter on product classification and identification (see Chapter 4);

---The product grade is changed from the original superior product, first-class product, second-class product, third-class product, four grades to superior products, first-class products, and qualified products.

Level (see Chapter 5, Chapter 3 of the 1999 edition);

--- According to the three levels of settings, the corresponding level indicators have been modified (see Chapter 5, Chapter 3 of the 1999 edition);

---Elongation at break, from the current standard of M1 ± 7% (excellent), M1 ± 10% (first-class), M1 ± 13% (second-class), M1±13% (third grade) (M1 is the center value of elongation at break, determined by the user and the manufacturer), adjusted to. M1±5.0% (Excellent products), M1±7.0% (first-class products), M1±10.0% (qualified products) (see Chapter 5, Chapter 3 of the 1999 edition);

--- Appearance indicators shall be changed from being implemented in accordance with Table 2 to be determined by the supplier and the purchaser or as specified in Appendix A (see Chapter 5, 1999).

Chapter 4 of the edition).

This standard was proposed by the China National Textile and Apparel Council.

This standard is under the jurisdiction of Shanghai Textile Industry Technical Supervision.

This standard was drafted. Changzhou Guoxing Special Chemical Fiber Co., Ltd., Shanghai Textile Industry Technology Supervision Institute, China Chemical Fiber Industry association.

1 Scope

This standard specifies the terms and definitions of polypropylene drawn yarn, product identification, technical requirements, test methods, inspection rules, signs, packaging, and transportation.

Requirements for transportation and storage.

This standard applies to bus density 33.3dtex~333dtex, monofilament linear density 1.0dtex~6.0dtex, circular cross section, light, half Extruded, fully matt, natural and colored textiles with polypropylene draw yarns, other types of polypropylene draw yarns can be used as reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 250 Textile color fastness test for gray color card for color change GB/T 2828.1-2003 - Sampling procedures for sampling by sampling - Part 1 . Batch-to-batch inspections by Retrieving Quality of Acceptance (AQL) plan Textiles and textiles - Performance and test terms - Part 1. Fibers and yarns GB/T 3291.3 Textiles and textile materials - Performance and test terms - Part 3 GB/T 4146.1 Textile chemical fiber - Part 1. Generic name GB/T 4146.3 Textile chemical fibres - Part 3. Test terms GB/T 6502 chemical fiber filament sampling method GB/T 6504 chemical fiber oil content test method GB/T 6505 chemical fiber filament heat shrinkage test method GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values GB/T 14343 chemical fiber filament density test method GB/T 14344 Test method for tensile properties of chemical fiber filaments

3 Terms and definitions

The terms and definitions defined in GB/T 3291.1, GB/T 3291.3, GB/T 4146.1 and GB/T 4146.3 apply to this document.

4 Product classification and identification

4.1 According to the content of titanium dioxide, the product can be divided into light wire, semi-dull wire and full extinction wire.

4.2 Product specifications are expressed in terms of bus density (dtex) and number of filaments (f).

Example. A polypropylene drawline with a bus density of 83 dtex and a number of filaments of 48, with a product specification of 83 dtex/48f.

4.3 Product model is marked according to product specifications and production process.

Example. 83dtex/48f polypropylene FDY.

5 Technical requirements

6 Elongation at break coefficient of variation (CVb) /% <= 15.00 17.00 - - - -

7 boiling water shrinkage rate /% M2b ± 1.0 M2 ± 1.0 M2 ± 1.5 M2 ± 1.5 M2 ± 1.8 M2 ± 1.8 8 oil content /% M3c ± 0.50 M3 ± 0.60 M3 ± 0.70

9 Cylinder weight/kg >= fixed length or fixed weight - -

aM1 is the central value of elongation at break, generally selected within the range of 20% to 36%, which is determined by the manufacturer and the customer, and shall not be arbitrarily determined once determined.

change.

bM2 is the central value of boiling water shrinkage rate, M1<=10%, which is determined by the manufacturer and the customer. Once determined, it shall not be changed arbitrarily.

cM3 is the central value of oil content, between 0.8% and 1.3%, which is determined by the manufacturer and the customer. Once determined, it shall not be arbitrarily changed.

5.3 Appearance inspection items and indicators it shall be determined by the supplier and the buyer in consultation or in accordance with the provisions of Appendix A.

6 Test methods

6.1 Physical property and dyeing performance index test

6.1.1 The linear density test shall be carried out in accordance with the provisions of GB/T 14343.

6.1.2 The breaking strength and elongation at break test shall be carried out in accordance with GB/T 14344.

6.1.3 The boiling water shrinkage test shall be carried out in accordance with the provisions of GB/T 6505.

6.1.4 The oil content test shall be carried out in accordance with the provisions of GB/T 6504, and the extraction method shall be adopted during arbitration.

6.1.5 Bar weight test The quality of the package is weighed out by weighing scales, electronic scales, etc., with a suitable weighing range, deducting the known skin quality, the net mass.

It is the weight of the barrel, accurate to 0.5%, and recorded.

6.2 Appearance inspection

6.2.1 Equipment

Appearance inspection can be performed using a moving light source, a fixed light source or a classifying table.

--- Moving light source. The operating point illumination is required to be greater than or equal to 600lx, and there is no strong interference source.

Note. The moving light source is selected according to the actual situation, and it can be a charging lamp or a flashlight or any other one that can meet the illumination requirement.

---Fixed light source. Two 40W ordinary fluorescent lamps arranged in parallel, suspended in the air from 180cm to.200cm above the ground.

The silk car can easily observe the light yellow oil with an area of >=0.5cm2 on the package.

---Classification table. black countertop, height 75cm~80cm. Hanging two 40W D65 high color fluorescent lamps (or 40W) Fluorescent light), the surrounding environment should be free of other scattered light and reflected light. The illumination at the working point is greater than or equal to 600lx.

6.2.2 Inspection steps

6.2.2.1 Carefully observe the two end faces of the package and the surface of one of the columns.

6.2.2.2 Visually inspect and record each package to be inspected.

7 Inspection rules

7.1 Inspection items

7.1.1 The items specified in Table 1 are factory inspection items and tested in accordance with the test methods specified in 6.1.

7.1.2 Appearance inspection items shall be inspected in accordance with the provisions of 5.3 and in accordance with the test methods specified in 6.2.

7.2 Group approval

According to the inspection batch group batch, one production batch can be composed of one inspection batch, and can also be composed of many inspection batches.

7.3 Sampling regulations

7.3.1 The laboratory samples tested in each item in Table 1 shall be sampled according to GB/T 6502. The tube weight test was sampled one by one.

7.3.2 Appearance inspection According to the provisions of 5.3, the grade is assessed tube by tube.

7.4 Assessment of test results

7.4.1 The measured value or calculated value of each item in Table 1 is in accordance with the limit value ratio of the comparison value of the revised value in GB/T 8170 and the index of Table 1.

Compare, rank one by one.

7.4.2 Appearance inspection shall be assessed item by item according to the requirements of 5.3.

7.4.3 The assessment of the comprehensive grade of the product shall be determined by the grade of the lowest item in the physical properties and appearance indicators of the inspection batch.

grade.

7.5 Re-inspection rules

7.5.1 General

A batch of products can be re-inspected within three months of receipt of the goods as an acceptance or an objection to quality. If the quantity of the batch is used when more than one third of the time, no re-inspection may be applied. However, if the receiving party can produce relevant evidence that the batch of products does affect the post-processing when the quality of the product is caused and serious losses are caused, the reasons shall be analyzed, the responsibilities of both parties shall be clarified, and the negotiation shall be handled.

7.5.2 Inspection items Same as 7.1.

7.5.3 Group approval Products that are batched according to the original production batch, but with a production date difference of more than 90d, cannot be batched by the same batch number.

7.5.4 Sampling regulations

7.5.4.1 The laboratory samples tested in each item except Table weight in Table 1 shall be sampled according to GB/T 6502.

7.5.4.2 Appearance items and cylinder weights According to the batch range, the sample size is specified according to the general inspection level II of GB/T 2828.1-2003.

code).

7.5.5 Assessment of retest results

7.5.5.1 The measured value or calculated value of each item in Table 1 is based on the comparison between the revised value of GB/T 8170 and the physical index of Table 1.

Value comparison, rating one by one.

7.5.5.2 Appearance inspection items and cylinders shall be in accordance with the normal inspection according to 7.5.4.2 sample size according to Table 2-A of GB/T 2828.1-2003.

The sampling plan AQL value is 4.0 to determine the number of receipts Ac and the number of rejections Re, and is assessed according to the provisions of 5.3, when the number of unqualified packages is <= Ac the original grade, when the number of unqualified packages is >=Re, it is judged as not meeting the original grade.

7.5.5.3 The assessment of the comprehensive grade of the product shall be judged as conforming to the higher than or equal to the original grade according to the provisions of 7.4.3.

meets the.

7.5.6 Public quality the polypropylene reclaimed yarn has a specified moisture regain rate of 0%. When the actual moisture regain rate is >1.0%, it is not allowed to leave the factory. The accepted mass at the acceptance is calculated according to formula (1).

m=m1×1 R01 R

In the formula.

m --- batch product package quality, in kilograms (kg);

M1---The net mass of the package of the batch product, in kilograms (kg);

The nominal moisture regain of R0--- polypropylene drawn yarn is 0%;

R --- measured moisture regain, %.

Note. The net quality refers to the quality of the bobbin minus the bobbin and wrapping paper; the silk cake deducts the quality of the sock and the small waist of the cake; the quality of the bobbin, wrapping paper, sock and silky waist the quantities are all calculated as the average of the actual mass.

7.5.7 Quality difference the difference between the quality (net weight or gross weight) of each package and the specified quality during re-inspection shall not exceed ± 5%, and the difference between the total package net weight and the specified quality shall not exceed If the price exceeds 0.5%, no claim will be made. If it exceeds the time, the actual difference will be claimed. If the two parties agree otherwise, this is not the case.

8 Marking, packaging, transportation and storage 8.1 mark the package name should be marked with the product name, specification, grade, batch number, net weight, gross weight, number of packages, packaging date, product standard number, trademark, the name of the manufacturer, the detailed address, etc., and the warning signs such as moisture-proof and careless.

8.2 Packaging

8.2.1 Each package should be placed in a plastic bag and placed in the package. There should be positioning devices (locators or positioning holes, etc.) in the package.

For the package, the quality of the package should be such that the package is not damaged.

8.2.2 The package size in each package should be as uniform as possible. Different varieties, specifications, batch numbers and grades must be boxed separately. Mixed mixing is strictly prohibited.

8.2.3 Each batch of products shall be accompanied by a quality inspection form.

8.3 Transportation

It is forbidden to damage the packing box and get wet during transportation.

8.4 Storage

The boxes are stacked in batches and stored in a dry, clean, ventilated place.

Appendix A

(normative appendix) Appearance requirements, inspection, assessment A.1 Technical requirements A.1.1 The appearance is divided into three grades. superior, first-class and qualified.

A.1.2 Appearance items and indicators are shown in Table A.1.

Table A.1 Appearance items and indicator values

No. Item Excellent Item First Class Qualified Product 1 wool a/(piece/cylinder) <= 0 5 10 2 wool group b/(piece/tube) <= 0 0 2 3 loose loop wire c/(piece/cylinder) <= 0 10 20

4 Forming d is good and generally 5 color difference e >= 4 4 3-4

6 Undrawn wire is not allowed not allowed 7 tail wire/(ring/cylinder) >= 2.0 2.0 no tail, multi tail 8 oil f is slightly obvious a Woolen. A single broken wire that is exposed to the surface of the package to form a hairy shape.

b Hairballs. Single or multiple fibers exposed on the surface of the package are broken or loosely twisted together during processing. Due to the hairline the effect is continuous in the form of filaments on both sides of the same fiber, no longer used for wool assessment.

c Loose wire. refers to a single wire that is exposed on the surface of the package and has an arc height > 2 mm.

d Forming. the surface of the package is flat; the surface of the package is not flat, but the unwinding is not affected; the surface of the package is uneven, which does not affect the unwinding;

If the surface is uneven or the stroke is too long or too short, it may affect the unwinding, but it will not cause the collapse to be poor (normal movement, the silk layer is 1cm~4cm from both ends of the tube).

e Color difference. According to GB/T 250 rating.

f Oil stain.

a) Excellent grades are extremely oily, referring to light yellow oil, the total area of which does not exceed 0.2cm2.

b) The first grade is slightly oily and refers to light yellow oil, the total area of which does not exceed 0.6cm2. The total area of darker oil does not exceed 0.3cm2.

c) The qualified product is slightly oily, referring to light yellow oil, and its total area does not exceed 1.2cm2. The total area of darker oil does not exceed 0.6cm2.

A.2 Inspection

A.2.1 Inspection conditions Using 40W ordinary fluorescent lamp (or D65 high color rendering fluorescent lamp), the illumination of the working point is greater than or equal to 600lx, and the surrounding environment should have no He scatters light and reflects light. The visual distance is 0.30m~0.40m, and it is 0.20m~0.25m when testing the packaged filament.

A.2.2 Equipment

A.2.2.1 Illumination table.

A.2.2.2 Classification station (car).

A.2.3 Inspection steps A.2.3.1 Rotate one turn on the classifying device to observe the two end faces of the package and one column surface.

A.2.3.2 Inspect each item to be inspected according to the requirements of A.1.2.

A.2.3.3 Check that the wool is fluffed with a thread or the broken filament of the monofilament protrudes from the surface of the multifilament and is visible to the light.

A.2.3.4 Inspection Package forming refers to the winding of the wire (cake) wire layer. The package is not packaged too hard, too soft, and the three faces are uneven.

And the improper position of the package, you can not test by hand when testing.

A.2.3.5 The test color difference shall be based on the color difference between the package and the package, and then recorded against the gray card.

A.2.3.6 Check the surface oil to visually see the oily wire, rust wire and the difficulty of washing the stain with water, and calculate the area.

A.2.3.7 Record the results.

A.3 Assessment rules A.3.1 The wool finger thread is wounded with furry phenomenon or the monofilament broken silk head protrudes from the surface of the multifilament, and the entire surface of the package is inspected for each cylinder.

The number of sub-accumulated hairs is determined.

A.3.2 Surface oil refers to oil, rust and stains that cannot be washed away with water, or artificial spots on the surface of the package. Barrel wire table the total area of pollution on the surface is fixed.

A.4 Comprehensive classification the lowest grade in the appearance item is the grade of the package.