JB/T 6980.2-1993 Test methods for plastic film and paper pressure-sensitive adhesive labels
Some standard content:
J29
JB
Machinery Industry Standard of the People's Republic of China
JB/T6980.1~6980.2—93
Plastic film and paper pressure-sensitive adhesive signs
Published on 1993-07-27
Ministry of Machinery Industry of the People's Republic of China
Published
Implemented on 1994-07-01
Machinery Industry Standards of the People's Republic of China
Plastic film and paper pressure-sensitive adhesive signs
Test methods
1 Subject matter and scope of application
This standard specifies the performance test method for plastic film and paper pressure-sensitive adhesive signs. JB/T 6980.293
This standard applies to the adhesion, weather resistance, damage resistance, dimensional stability, liquid resistance, salt spray resistance and front color light fastness of the signs specified in JB/T6980.1 Performance tests. 2 Reference standards
GB2423.17
GB2792
GB8427
GB8428
JB/T 6980.1
ZBN71007
3 Adhesion force
3.1 test plate
Basic environmental testing procedures for electrical and electronic products Test Ka: Salt spray test method Pressure-sensitive adhesive tape 180* separation strength determination method Textile light color fastness test method jaw| |tt||Test method for light fastness of textiles Carbon arc plastic film and paper pressure-sensitive adhesive label Technical conditions Mechanical tensile testing machine Technical conditions
The test plate is made of a stainless steel plate or a stainless steel plate with a flat surface that does not produce bending deformation during the test. Made of glass plate, its dimensions: length × width × thickness = 200mm × 50mm × (1.5~2)mm (stainless steel) and 200mm × 50mm × 6mm (glass). 3.2 Samples
Cut 3 samples of size 200mm×25mm from the product to be tested. 3.3 Pasting of the sample
Clean the test plate with an appropriate solvent, leaving no traces of adhesive, oil ester, silicone or moisture. After the test plate is dry and exploded, place the sample symmetrically Paste it on the test board, and then use the pressing device and method specified in GB2792 to paste the sample on the test board. 3.4 Adjustment of the sample
After the sample is attached to the test plate, store it for 72 hours at a temperature of 23±2C and a relative humidity of (50±5)% before conducting the test. 3.5 Test steps
The test steps are in accordance with the provisions of GB2792. The tensile testing machine should comply with ZBN71007 testing machine accuracy level 1. 3.6 Test result evaluation
Read 4 measured values ??within the value range, and take the average value as the residual force of the sample. Calculate the arithmetic mean of the remaining forces of the three samples to indicate the adhesive strength of the sign.
3.7 For profiled film signs, if the sample is gradually cracked during the test and the measurement section (value range) does not reach 50mm+, tear-resistant adhesive tape can be used to strengthen the test. For paper signs, if the sample is torn and fails to reach the 50mm measuring plate section, the average remaining force measured before tearing begins will be used as the bonding strength of the sample. Approved by the Ministry of Machinery Industry on 1993-07-27
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1994-07-01 Implementation
4 Weather Resistance
JB/T 6980.293
Test The plates, specimens, specimen pasting and specimen adjustment shall be in accordance with Articles 3.1 to 3.4 respectively. 4.1
4.2 Place the sample adjusted according to Article 3.4 in the climate group recommended in Appendix A of JB/T6980.1 (selected by negotiation between the supplier and the buyer) and test duration.
4.3 Take out the sample and inspect it visually,
5 Scratch resistance strength
5.1 Inspection tools
5.1.1 Inspection equipment
Inspection equipment The main part is a white hard polished felt piece with a diameter of 65mm and a thickness of 7.5mm. The polishing felt piece is fixed during assembly to prevent rotation during operation, and allows it to move a distance of 25mm on the surface of the sample, stably The force with which the light felt is pressed against the specimen surface is adjustable. During the inspection process, use a layer of white medical gauze to cover the circular position where the polishing felt contacts the sample (see the figure for the recommended device structure principle).
48 mi
5.1.2 Test reagents
Water,
a.
b. Petroleum ether;
e|| tt||Alkyl benzene sulfonate.
5.1.3 Medical gauze.
5.2 Pasting and adjustment
5
450
Guiding device for kidneys
Latent aid dosage
White Charran light base||tt ||Zi
Mold nut
60
p 65
Picture
For the pasting and adjustment of the test plate, sample, and sample, please press The provisions of Articles 3. to 3.4. The surface of the specimen to be inspected must be free of dirt, such as oil, dust, etc.
5.3 Inspection Plan
JB/T 6980.293
This standard stipulates two inspection plans A and B. Which plan to adopt shall be determined by negotiation between the supplier and the buyer when ordering. 5.3.1 Plan A
5.3.1.1 Drop a few drops of neutral liquid wetting agent based on alkyl benzene sulfonate and non-ionic wetting agent on the surface of the sample, keep it for 30 minutes, and then rinse it carefully with water or use a wet towel Gently remove the wetting agent and allow the specimen to dry completely. 5.3.1.2 On the inspection equipment provided in Article 5.1.1, rub the surface of the sample with a polishing felt wrapped in dry medical gauze, with a pressing force of 2.5N, and rub it back and forth 12 times within 15s. Then cover the optically adhesive sheet with water-soaked medical gauze, rub the sample with a compressive force and reciprocating speed,
5.3.2 Plan
5.3.2.1 Use dry medical gauze Cover the polishing felt, rub the surface of the sample on the inspection equipment provided in Article 5.1.1, with a pressing force of 7.5N, and rub it back and forth 6 times within 8 seconds. Then cover the polishing felt with water-soaked medical gauze, and rub the sample with the same pressing force and reciprocating speed. Www.bzxZ.net
5.3.2.2 Drop a few drops of wetting agent on the sample according to the method in Article 5.3.1.1, remove the wetting agent, and cover the polishing felt with medical gauze soaked with wetting agent to carry the sample. , the pressing force is 7.5N, and the friction is repeated 6 times within 8 seconds. 5.3.2.3 Remove the wetting agent from the parts without words or symbols on the sample (such as vibrating, running off or blowing off), and cover the sample with medical gauze soaked with petroleum aldehyde. is 7.5N, rub back and forth 6 times within 8s, 5.4 Test result evaluation
Visual inspection after the surface of the sample is dried, 6 Dimensional stability
6.1 Test plate ||tt| |The test plate is made of an aluminum plate with a flat surface, and its dimensions are: length × width × thickness = 150mm × 150mm × 2mm. 6.2 Samples
Cut three 100mm×100mm samples from the product to be tested. 6.3 Pasting of the sample
Paste the sample on the test plate according to the provisions of Article 3.3. Since the width of the sample is 100mm and the width of the pressing is 45mm, the pressing should be rolled on the sample. 3 times, the first time, the pressing passes through the middle of the sample, the second and third times, the pressing passes along the two sides of the sample respectively, 6.4 Adjustment of the sample
The sample is attached to the test plate Finally, store it for 72 hours at a temperature of 23±2C and a relative humidity of (50±5)%, and measure the length and width of the sample. Then place the sample for 24 hours in the climate group recommended in Appendix A of JB/T6980.1 or under the climate conditions negotiated by both parties. Use a sharp knife (wattle knife) to cut the protruding sample part along the test plate. Open, measure its size, and calculate the percentage change in size of each sample. Take the average of the dimensional change percentages of the three specimens to evaluate the dimensional stability of the sign. 7 Liquid Resistance
Test Board, the specimen and the pasting and adjustment of the specimen shall be in accordance with the provisions of Articles 3.1 to 3.4 respectively. 7.1
7.2 Immerse half of the conditioned sample into the relevant liquid specified in Table 3 of JB/T6980.1. After the immersion time is reached, immediately take it out of the test liquid and inspect it visually.
8 Salt spray resistance
The pasting and adjustment of the test plate, sample and sample shall be in accordance with the provisions of Articles 3.1 to 3.4 respectively. 8.1
8.2 The conditioned sample shall be tested according to the provisions of GB2423.17 for 48 hours, and shall be taken out of the test chamber immediately for cleaning, and inspected with a visual gauge after drying.
9 Color fastness
Test plate. The pasting of specimens in the sample section shall be in accordance with the provisions of Sections 6.1~6.3, 9.1
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JB/T6980 .293
9.2 After the sample is attached to the test board, it is stored at a temperature of 23 ± 2°C and a relative humidity of (50 ± 5)% for 24 hours before the test is carried out. 9.3 Test method
According to the provisions of GB8427 and GB8428.
Additional instructions:
This standard is proposed and managed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry and Shanghai No. 12 Machine Tool Factory.
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