This standard specifies the method for measuring the softness of paper using a hand-feel softness tester. This standard is applicable to various wrinkled toilet papers, tissue papers and their derivative products, as well as other papers that require softness. GB/T 8942-2002 Determination of paper softness GB/T8942-2002 Standard download decompression password: www.bzxz.net

Irs 85.850
National Standard of the People's Republic of China
G/r 8942 -2002
Determination of paper softness
Paper-Delermination of softness2002-09-06Promulgated
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-01-01Implementation
CB/T6942--2032
This standard is a revision of GB942-158 paper softness wheel setting method. The appendix to this standard is a reminder of the reduction.
This standard shall be effective from the date of implementation. The main body of this standard is China Federation of Industry and Commerce: China National Standardization Technical Committee for the Standardization of this standard: China Pulp and Paper Research Institute. The main drafters of the Li Er standard were Chen Xue, Li Lanfen and Zhenghua Rongchuan Fengduan. The standard was first issued in 198.
China Paper Industry Standard Physical and Chemical Technical Committee. 1 Standard
National Standard of the People's Republic of China
Determination of Paper Softness
Puper-DeterrdatEun nf snftmess standard completed request hand exhaustion I only develop a method for determining the softness of paper, GB1 8542—7002
GD/5-—15s
This standard applies to various wrinkled raw papers, medium-sized paper and its derivatives, as well as paper with requirements for softness. 2 Referenced standards
The following standards are included in the standard. The referenced parts in this standard are all valid. All standards will be used. The parties to this standard should explore the applicability of the standard. 0—2002 Paper Dial Test Method (50)
GB/10732 ((2 Paper, Paperboard, Paper Pulp Sample Treatment and Test Standard (Y0) 187:10) 3 Terms
This standard uses the following definitions.
Softness change x
Under specified conditions, when the toothed probe will make The pressure is adjusted to obtain a certain depth of change in mm. The sum of the maximum change of the sample itself and the original rate of the seam is called flexibility, which is expressed by the maximum flexibility. The smaller the flexibility, the more flexible the sample. 4 Instruments The instrument adopts the vertical comparator shown in Figure 1. Figure 1 Inductive multiplication instrument The instrument should be installed on a horizontal, solid table: The basic parameters of the instrument should meet the following requirements and be checked according to the specified method. 4.1 The test range is narrow and wide. The test range of the instrument should be divided into four grades: 5.0mm, 6.35mm, 1u.0mm and 200mum. The net error is no more than ±3.usmn. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China 20D2-09-Batch 2003-01-01 The actual measurement probe has a 2-axis shape and a small size. The length is 220mm. The diameter of the probe is 4.3mm. The half-length speed of the probe is 1.2m/s. The total speed of the half-groove probe is 1.2m/s.2m/s.
2.4 Test pressure gauge
Pressure depth n
4.5 Joint vertical requirements
The flow should not exceed .US2:
4.6 Probe alignment
CRTB942·2002
When entering the joint, the probe alignment: the two sides should be symmetrical, and the symmetry circle should be less than .5mm.4.7 Accuracy of the instrument
4.7.1 The instrument lifts one-way owmV
4.7.2 Load accuracy: ±1%.
4.7.3 The weight is less than %.
5 Sample collection
According to the sample average column.
6 Test treatment
The sample should be wet treated according to GB/1: and prepared and tested under this condition. 7 Test preparation
In the test, according to the number of layers specified in the product standard, take the sample from the sample, cut it into 1010μm samples, and mark the longitudinal and reverse sides respectively. The length should not be larger than the main. Four. Whether it is a pressed or wood pressed sample, the sample should be opened and layered, and then stacked together for soft wheat testing. 8 Test steps
.1 After turning on the instrument according to the manual, adjust the instrument zero point according to the requirements of the product standard, adjust the independent rotation distance, and at the same time check the error and parallelism to make them meet the test requirements 1 and 1.:8.2 Place the instrument on the test bench and make it as close to the test bench as possible, with the sample holders stacked up and down. Move the instrument to the value position and press the test button. The instrument head starts to move. After the whole process is completed, take the measurement from the display, then take out the parallel test samples and the test direction, and dial 1 number respectively. 9 Calculation of results: The results are expressed as the arithmetic mean of the transverse test results, expressed as the number of revolutions. Note: For tests with too high softness, a sample with a thickness of less than 1Gmm can be used to determine the length of the sample. 10 Test report: The following date:
Certificate number:
3 Test environment conditions:
F8947—2002
The maximum value of the test result is
d) The coefficient of abnormality of the test result;
) Number of test product layers:
[i] Study degree:
) Any deviation from this standard.
A1 Inspection of narrow frog width, density error and accuracy GB/I6942
Appendix A
(not specified)
Instrument parameter inspection
Energy standard caliper (division value is.2mr:) The measurement is the range of the two ends and the range of the chain. The average of the actual measured values ​​is the actual chain length. The difference with the narrow mark should not be less than 0.05m. The difference between the maximum and minimum values ​​is the accuracy error.
2 Measure the average speed and total stroke margin A2.1 First open the probe to the travel measuring position, measure the upper end of the height scale to the table and then lower the probe to the lowest position to measure the total height of the table. Calculate according to formula A>: H =
A2.2 Use a stopwatch to measure the time required for the measuring or measuring position to reach the lowest position, accurate to 0.01*. Expressed as 1, the average travel load (grass plate: m/s according to formula A2) is calculated:
43 Depth inspection of the press-in environment
And the vernier caliper measures the plate-shaped probe height, then the press-in depth rate is: mm according to formula (A K-Hh-Ei
44 Instrument accuracy inspection
Adjust the instrument to the right point, install the pulley frame according to the figure, and then install, 50, SN magnetic code. Or press the code on the back of the plate-shaped probe. Repeat two times and three times to obtain three sets of measured values. Figure A1 Instrument accuracy test slide framebZxz.net
Load accuracy should be calculated according to formula
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