This part of YC/T 16 specifies the terms and definitions, requirements, sampling, test methods, inspection rules, labeling, packaging, storage and transportation of reconstituted tobacco produced by the thick pulp method. This part applies to reconstituted tobacco produced by the thick pulp method. YC/T 16.2-2002 Reconstituted Tobacco Part 2: Thick Pulp Method YC/T16.2-2002 Standard download decompression password: www.bzxz.net

ICS65.160
Registration number: 10495—2002
Tobacco Industry Standard of the People's Republic of China
YC/T 16.2-2002
Replaces YC/T16-1994
Reconstituted tobacco
Part 2: Slurry process
Reconstituted tobacco---Part 2: Slurry processePromulgated on May 14, 2002
Promulgated by the State Tobacco Monopoly AdministrationWww.bzxZ.net
Implementation on July 1, 2002
YC/T16.2—-2002
This part of YC/T16 is a revision of YC/T16-1994 "Tobacco Sheets". In terms of the writing form, the original independent standard was changed to YC/T16.2-2002 "Reconstituted Tobacco Part 2: Thick Pulp Method". This part replaces YC/T16-1994.
When formulating this part, the indicators in YC/T16-1994 that are not related to actual production were deleted, and appearance requirements were added.
This series of standards consists of three parts:
YC/T16.1 Reconstituted Tobacco Part 1: Rolling Method YC/T16.2 Reconstituted Tobacco Part 2: Thick Pulp Method YC/T16.3 Reconstituted Tobacco Part 3: Papermaking Method This part was proposed by the State Tobacco Monopoly Administration. This part is under the jurisdiction of the National Tobacco Standardization Technical Committee (TC144). The drafting unit of this part: Tobacco Flakes Research Laboratory of China National Tobacco Corporation. The drafters of this part: Chen Xiaoyu, Zhao Yantang, Shan Hongguang, Yin Dafeng, Li Qinghua. The previous versions of the standard replaced by this part are: YC/T16—1994. 528
1 Scope
Reconstituted tobacco Part 2: Thick pulp method
YC/T 16.2---2002
This part of YC/T16 specifies the terms and definitions, requirements, sampling, test methods, inspection rules, labeling, packaging and storage and transportation of thick pulp method reconstituted tobacco.
This part applies to reconstituted tobacco produced by thick pulp method. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of YC/T16. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For all undated references, the latest versions are applicable to this part. GB/T451.2—1989 Determination of the basis weight of paper and paperboard (eqvISO536:1976) GB/T451.3-1989 Determination of the thickness of paper and paperboard (eqvISO438:1980) GB/T457-1989 Determination of the folding endurance of paper (eqvISO5626:1978) GB/T12914—1991 Determination of the tensile strength of paper and paperboard (constant rate of tension method) (eqvISO1924-2:1985) GB/T16447 Atmospheric environment for conditioning and testing of tobacco and tobacco products (idtISO3402) YC/T28.8-1996 Determination of the physical properties of cigarettes Part 8: Moisture content YC/T152---2001 Determination of the filling value of cut tobacco in cigarettes 3 Terms and Definitions
This part uses the following terms and definitions.
Grammage
The mass of reconstituted tobacco per square meter, expressed in grams per square meter. 3.2
Thickness
The thickness of reconstituted tobacco under a certain pressure, expressed in millimeters. 3.3
Tensile strength
The maximum tension that a reconstituted tobacco can withstand per unit cross-sectional area, expressed in Newtons per square millimeter. 3.4
Folding strength
The number of times a reconstituted tobacco can withstand reciprocating folding under a certain tension, expressed in times. 3.5
Ewater resistance
Water resistance
The time for reconstituted tobacco to withstand immersion without disintegration, expressed in minutes. 3.6
Determination of filling power529
YC/T 16.2--2002
The volume of reconstituted tobacco shreds per unit mass under a constant pressure, expressed in cubic centimeters per gram. 3.7
blemish
Defects formed by undispersed fiber clusters, uncrushed tobacco stems, insufficiently swollen carboxymethyl fiber bundles (CMC) and other foreign matter on the surface of reconstituted tobacco leaves.
4 Requirements
4.1 The tobacco raw materials used to make reconstituted tobacco leaves should not deteriorate, be free of pollution and impurities, and have a dust content of less than 2%. 4.2 The auxiliary materials used to make reconstituted tobacco leaves should comply with the relevant national food hygiene standards. 4.3 Reconstituted tobacco leaves should have no obvious odor and no mold. 4.4
Physical and technical requirements for reconstituted tobacco leaves are shown in Table 1.
Table 1 Physical indicators of reconstituted tobacco
Tensile strength
Folding endurance
Water resistance
Filling value
Note: The design standard values ​​of thickness, moisture and quantitative are formulated by the enterprise according to the actual production needs. 4.5 Appearance
4.5.1 The adhesion rate of reconstituted tobacco leaves should not exceed 5%. Technical requirements
Design standard value±1%
Design standard value±0.01 mm
Design standard value±10%
Vertical>2.1
Horizontal>1.0
Vertical>80
Horizontal>40
5 (initial temperature 25C±5C)
4.5.2 The number of white spots with a diameter greater than 2.0mm on the surface of reconstituted tobacco leaves shall not exceed 10 in 100cm2. 5 Sampling
5.1 Take the reconstituted tobacco leaves produced in each shift as one inspection batch, and randomly sample five times in each shift, with the interval between each sampling not less than 30 minutes. 5.2 Each time, 50 samples of 250mm×200mm (vertical×horizontal) are sampled and cut at the exit of the drying end of the production line. The samples should be free of damage and wrinkles. After mixing the five samples, 100 pieces are randomly selected as test samples. 5.3 The reconstituted tobacco leaves are sampled at the exit of the slicer. Five boxes are randomly selected from the packed boxes. 1kg is sampled each time (box). After five samples are mixed, 2kg is sampled by quartering method as test samples. 5.4 Preparation of experimental samples for physical quality of reconstituted tobacco leaves 5.4.1 Before testing, the test samples should adjust the sample moisture according to GB/T16447. 5.4.2 The moisture test samples do not adjust the moisture, and the water resistance test samples should reach the curing time required by the process. 5.4.3 See Table 2 for sample specifications.
Test items
Thickness, quantitative, appearance (white spots)
Tensile strength, folding endurance
Water resistance
Table 2 Sample specifications
Sample specifications
100×100
150×15
YC/T 16. 2-2002
Or discs of equal area
Divided longitudinally and transversely
5.4.4 The length and width error of the sample cut is ±0.1mm, the longitudinal and transverse deflection angle is not greater than 5, the cut is neat, without burrs and any damage.
5.4.5 Filling value After the sample is cut according to the actual production specifications, it is prepared by the quartering method. 6 Test method
Adjustment and test environmental conditions
According to GB/T16447.
6.2 Moisture
Take 30g sample and test it according to YC/T28.8-1996. 6.3 Quantification
Test it according to GB/T451.2-1989. 6.4 Thickness
Test it according to GB/T451.3-1989. 6.5 Tensile strength
6.5.1 Technical requirements of instrument
Micro electronic tensile testing machine or tensile strength tester for reconstituted tobacco leaves that meets the following technical requirements: The center line of the upper and lower sample clamps should be parallel to the direction of force on the sample, and the sample should be kept in the same plane during the force process. The distance between the sample clamps is 100mm;
The accuracy of the tensile force at the time of fracture is within ±1%; the time from the start of load to fracture of the sample is (20 ±5)s; the effective measurement range of the instrument is between 10% and 90% of the total amount. 6.5.2 Determination steps
The test is carried out in accordance with the provisions of GB/T12914--1991. Each sample is tested 14 times in the longitudinal and transverse directions respectively. Remove the two maximum and two minimum values ​​of the absolute tensile strength, and calculate the tensile strength with the remaining data. The calculation result of the tensile strength is rounded to 0.1 N/mm. 6.6 Folding endurance
6.6.1 Technical requirements of the instrument
The folding speed is 60 times/min, the folding angle is 90°, and the initial folding tension is 0.1N. 6.6.2 Determination
The test is carried out in accordance with the provisions of GB/T457-1989. The folding endurance is expressed as the arithmetic mean of the number of folding times tested 10 times. The calculation result is rounded to an integer.
6.7 Water resistance
6.7.1 Technical requirements of the instrument
Shaking frequency (120±2) times/min, amplitude 25mm (double amplitude 50mm), shaking for 5s every 30s, total time 5min, time control accuracy ±1s.
6.7.2 Determination steps
Put five pieces of the sample into a 250ml beaker, add 100ml (25±5)C clean water. Place it on the shaking table, start the instrument for determination, and record the time when the sample does not disperse.
YC/T 16. 22002
6.8 Filling value
Perform the test in accordance with the provisions of YC/T152-2001. 6.9 Appearance
6.9.1 Adhesion rate of reconstituted tobacco leaves
Randomly select about 5.0 kg of reconstituted tobacco leaves as samples for weighing, select the connected and adhered reconstituted tobacco leaves for weighing, and calculate the adhesion rate of connected pieces by formula (1):
(%) 2
Where:
Adhesion rate of reconstituted tobacco leaves;
The mass of connected and adhered reconstituted tobacco leaves, in dry grams (kg); d
The mass of the sample, in kilograms (kg). 6.9.2 Self-pointing
Randomly select 10 samples, measure with a ruler and count the number of white spots with a diameter greater than 2.0 mm on the samples, and take the arithmetic mean of the number of white spots on the 10 samples and round it off to an integer to represent the white spots of the batch of reconstituted tobacco leaves. 7 Inspection rules
7.1 The quality of reconstituted tobacco leaves is expressed in percentage, with the highest score being 100 points. 7.2 According to the test results and technical requirements, the quality of each index is determined. If each single item meets the technical requirements and tolerance regulations in Table 1, the corresponding item can get full marks; otherwise, it will get zero marks.
7.3 The score grades of each physical index are shown in Table 3. Capsule 3 index score grades
Tensile strength/(N/mm*)
Folding endurance/(times)
Filling value/(cm2/g)
Water resistance/min
Moisture/%
Thickness/mm
Basis/(g/m)
7.4 The appearance score is the sum of the scores of each appearance index. 7.5 The appearance index score grades are shown in Table 4.
Table 4 Appearance index score level
Continuous adhesion rate of reconstituted tobacco leaves
7.6 The sum of the scores of each individual item is the quality score of reconstituted tobacco leaves. 7.7 Quality judgment
7.7.1 The quality score of reconstituted tobacco leaves indicates the comprehensive manufacturing technology level of reconstituted tobacco leaves. 7.7.2 Factors that veto the quality of reconstituted tobacco leaves
7.7.2.1 The tensile strength of reconstituted tobacco leaves is less than 1.6N/mm2 in the longitudinal direction and less than 0.7N/mm in the transverse direction. 532
7. 7. 2. 2
The folding endurance of reconstituted tobacco leaves is unqualified.
The water resistance of reconstituted tobacco leaves is unqualified.
The continuous adhesion rate of reconstituted tobacco leaves is greater than 30%.
7.7. 2. 4
The reconstituted tobacco leaves are moldy.
7.7.2.6 Reconstituted tobacco leaves have a distinct odor. 7.7. 2. 7
The raw materials or auxiliary materials used to make reconstituted tobacco leaves do not meet the requirements of 4.1 and 4.2. 8 Labeling, packaging, storage and transportation
8.1 Labeling
YC/T 16.2-2002
The product name, trademark, specifications, production date, manufacturer name, address, packaging size, net weight, gross weight, and safety mark should be marked on the packaging.
8.2 Packaging
The packaging should be sealed with odorless moisture-proof materials. The packaging should be complete and firm. 8.3 Purchase and transportation
During storage and transportation, it should be protected from rain, moisture, sunlight, and contact and contamination with odorous items. 533
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