Some standard content:
ICS65.160
Registration No.: 10496-2002
Tobacco Industry Standard of the People's Republic of China
YC/T 27-2002
Replaces YC/T27-1995
Polypropylene fiber tow for cigarette
Polypropylene fiber tow for cigarettePublished on 2002-05-14
State Tobacco Monopoly Administration
Implemented on 2002-07-01
YC/T27--2002
This standard is drafted in accordance with GB/T1.1-2000 "Guidelines for Standardization Work Part 1: Structure and Writing Rules of Standards".
This standard replaces YC/T27-1995 "Polypropylene fiber tow for cigarette". Compared with YC/T27-1995, the main changes of this standard are as follows: the referenced standards are modified, and the definitions of pulp block, yarn curl index and yarn curl elastic recovery rate are added; the tolerance and coefficient of variation of yarn line density are reduced; - the index requirements of yarn curl index and yarn curl elastic recovery rate are added; the curl degree and coefficient of variation of single yarn, curl elastic recovery rate and coefficient of variation, breaking strength and defects are cancelled; the appearance is listed separately as 4.3;
the general calculation formula in Chapter 5 of YC/T27-1995 is cancelled; the method and conditions for toxicity test of yarn are added to the test method; - single item judgment and batch quality judgment are added to the inspection rules, and re-inspection is cancelled. This standard is proposed by the State Tobacco Monopoly Administration. This standard is under the jurisdiction of the National Tobacco Standardization Technical Committee (TC144). The drafting units of this standard are: China Tobacco Material Company, Science and Education Department of State Tobacco Monopoly Administration, National Tobacco Quality Supervision and Inspection Center, Hubei Tobacco Quality Inspection Station, Danyang Filter Material Branch of Jiangsu Daya Co., Ltd., and Henan Zhongzhou Chemical Fiber Industry Co., Ltd. The main drafters of this standard are: Xing Jun, Song Jijiong, Shen Yunlong, Li Qingcheng, Fan Zhonghui, Wang Hongyi, and Wang Zhiqiang. The previous versions of this standard are: YC/T27--1995. 542
1 Scope
Polypropylene fiber tow for cigarettes
YC/T 27--2002
This standard specifies the terms and definitions, requirements, sampling methods, test methods, inspection rules, marking, packaging, transportation and storage of polypropylene fiber tow for cigarettes.
This standard is applicable to polypropylene fiber tow for cigarettes (hereinafter referred to as tow). 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, parties that reach 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 is applicable to this standard. GB6529--1986 Standard atmospheres for conditioning and testing textiles (neqISO139:1973) GB/T8170 Rules for rounding off values
GB15193.3 Acute toxicity test
YC/T169.1-2002 Series of standards for determination of tobacco tow YC/T 169.2--2002
YC/T 169.3-2002
Series of standards for determination of tobacco tow
Series of standards for determination of tobacco tow
YC/T 169. 4-2002
Series of standards for determination of tobacco tow
YC/T 169. 6--2002
YC/T 169.7-2002
YC/T 169.9—2002
Standards for the determination of tobacco tows
Standards for the determination of tobacco tows
Standards for the determination of tobacco tows
YC/T 169.12—2002
Standards for the determination of tobacco tows
3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Split
The tow band is continuously separated into two or more parts. 3.2
Rough
The edge of the tow band is obviously loose and partially detached from the tow band. 3.3
UncleannesswwW.bzxz.Net
The surface of the tow band is unclean or has color difference fibers. 3.4
Pulpous cake
The hard block in the finished tow.
Tow linear density
Single yarn linear density
Number of crimps
Tow crimp index and tow crimp elastic recovery rateCross-sectional shape
Moisture regain
Oil agent content
Packaging and appearance,
YC/T 27—2002
Tow crimp index
An index that indicates the degree of crimping of a tow, that is, the ratio of the elongation of a certain length of crimped tow to reach equilibrium under heavy load to the length of the unstretched tow.
Tow crimp elastic recovery rate
percentage crinp recovery
The tow stretched by heavy load reaches equilibrium under light load after a certain period of recovery after the heavy load is removed, and is expressed as the difference between the straightened length of the crimped tow and the length recovered after straightening, and the percentage of the difference between the straightened length and the crimped length. 4 Requirements
4.1 The yarn bundle should be non-toxic.
4.2 The technical indicators of the yarn bundle should comply with the provisions of Table 1. Table 1 Technical indicators of the yarn bundle
Indicator name
Yield line density
Yield line density coefficient
Single yarn line density
Crimping number
Yield curl index
Yield curl elastic recovery rate
Oil content
Moisture regain
Cross-sectional shape
4.3 Appearance
4.3.1 The yarn bundle should be free of odor or mildew.
pieces/25mm
Standard requirements
According to design requirements
According to design requirements
According to design requirements
According to design requirements
Non-circular
4.3.2 The tows should be arranged regularly in the package and easy to pull out. The number of knots per package should not exceed -, and the knots should be clearly marked. 4.3.3 The tows should be pure white and should not have obvious bright light. The tows should not have pulp lumps. 4.3.4 The tow belt should not have burrs with a width greater than 10mm and a length greater than 500mm; there should not be strands with a length greater than 1000mm; there should not be fibers with unclean surfaces or color differences greater than 3mm in length, or stains less than 3mm but with more than two points.
4.4 The tows with special technical requirements shall be subject to the agreement between the supply and demand parties. 5 Test method
Except for appearance, moisture regain, cross-sectional shape and oil content, the samples shall be conditioned and tested under the three-level conditions specified in GB6529-1986 before testing.
5.1 Tow density and coefficient of variation
Ten sections of tow with a length of about 1.5 m were randomly selected from the laboratory samples and tested according to the method specified in YC/T169.1-2002. 5.2 Single yarn density
Five sections of tow with a curl of 30 mm and not damaged were randomly cut from the laboratory samples and tested according to the method specified in YC/T169.2-2002.
5.3 Number of curls
YC/T 27-2002
Five sections of tow with a curl of 30 mm and not damaged were randomly cut from the laboratory samples and tested according to the method specified in YC/T169.3-2002.
5.4 Yarn curl index, yarn curl elastic recovery rate Randomly cut five 50mm curled and undamaged yarns from the laboratory sample and test them according to the method specified in YC/T169.4-2002.
5.5 Oil content
Randomly cut a yarn of about 50g from the laboratory sample and test them according to the method specified in YC/T169.9--2002. 5.6 Moisture regain
Randomly cut a yarn of about 30g from the laboratory sample and test them according to the method specified in YC/T169.7-2002. 5.7 Cross-sectional shape
Randomly cut a yarn of 20mm~30mm from the laboratory sample and test them according to the method specified in YC/T169.6-2002.
5.8 Appearance
During the sampling process, the sample packages shall be visually inspected and sensory inspected according to the methods specified in YC/T169.12-2002. 5.9 Toxicity
Toxicity tests shall be conducted in accordance with GB15193.3 in the following cases: a) before new products are put into use;
b) when there are major changes in the production process or raw materials of the product; c) when the additives of the product are changed;
d) the requirements of relevant national technical supervision departments. 6 Inspection rules
6.1 Sampling method
6.1.1 Products with the same name, type, specification and produced in the same period (or delivered at one time by both the supply and demand parties) are considered a batch. 6.1.2 Five packages (if there are less than five packages, one package is selected) are randomly selected from each batch of tows as tow batch inspection samples. 6.1.3 From the tow batch inspection samples, after removing the tows at least 5 cm thick at the head or bottom of each package, 10m is randomly selected as a section, and a total of 50m is selected as laboratory samples. 6.2 Single Item Determination
6.2.1 The test results of single-filament linear density, yarn bundle linear density and coefficient of variation, number of crimps, yarn bundle crimp index and coefficient of variation, yarn bundle crimp elastic recovery rate, oil content, and moisture regain shall be rounded off according to the significant digits in the technical requirements of 4.2. The rounding method shall be implemented in accordance with GB/T8170.
6.2.2 Yarn bundle linear density
If the test result of the yarn bundle linear density does not meet the requirements of 4.2, the linear density of the batch of yarn bundles shall be unqualified. 6.2.3 Coefficient of variation of yarn bundle linear density
If the test result of the coefficient of variation of yarn bundle linear density does not meet the requirements of 4.2, the coefficient of variation of the linear density of the batch of yarn bundles shall be unqualified. 6.2.4 Single-filament linear density
If the test result of the single-filament linear density does not meet the requirements of 4.2, the single-filament linear density of the batch of yarn bundles shall be unqualified. 6.2.5 Crimping number
If the test result of the crimping number of the tow does not meet the requirements of 4.2, the crimping number of the tow batch is unqualified. 6.2.6 Crimping index of the tow
If the test result of the crimping index of the tow does not meet the requirements of 4.2, the crimping index of the tow batch is unqualified. 6.2.7 Crimping elastic recovery rate of the tow
If the test result of the crimping elastic recovery rate of the tow does not meet the requirements of 4.2, the crimping elastic recovery rate of the tow batch is unqualified. 545
YC/T 27--2002
6.2.8 Oil content
If the test result of the oil content of the tow does not meet the requirements of 4.2, the oil content of the tow batch is unqualified. 6.2.9 Moisture regain
If the test result of moisture regain of the tow does not meet the requirements of 4.2, the moisture regain of the batch of tow is unqualified. 6.2.10 Cross-sectional shape
If the test result of cross-sectional shape of the tow does not meet the requirements of 4.2, the cross-sectional shape of the batch of tow is unqualified. 6.2.11 Appearance
If the test result of appearance of the tow does not meet the requirements of 4.3, the appearance of the batch of tow is unqualified. 6.3 Batch quality determination
6.3.1 If the result of toxicity test of the tow does not meet the requirements of 4.1, the batch of tow is unqualified. 6.3.2 If the tow has odor or enzymatic change, the batch of tow is unqualified. 6.3.3 If more than two items of the test results of technical indicators of the tow do not meet the requirements of 4.2 and 4.3, the batch of tow is unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
The packaging box should clearly indicate the product name, specifications (single yarn density, cross-sectional shape, yarn bundle density), production date, manufacturer, factory address, monopoly license number, package weight, and moisture-proof, sunlight-proof, and heavy pressure-proof marks. 7.2 Packaging
7.2.1 The product packaging should be complete and packed with materials of a certain strength, and the box should be lined with clean, dry, and non-toxic plastic bags. 7.2.2 The net weight of each bundle should be greater than 100kg. The product should be accompanied by a certificate of conformity. 7.3 Transportation
During transportation, the product should be protected from rain, sunlight exposure and heavy pressure, and should not be mixed with odorous or toxic items. 7.4 Storage
The product should be stored in a dry and well-ventilated place, should not be mixed with odorous or toxic items, and should be away from heat and fire sources. The floor height should not exceed four floors.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.