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 Waterproof coiled material instrument

Three position viscosity tester

Release time: October 25, 2016 popularity: three hundred and sixty-nine

Brief introduction of three position viscosity tester:

Adhesion tester is also known as viscosity tester. The positions of adhesion tester are mainly divided into three positions and five positions. It is mainly used for pressure-sensitive adhesive tape, medical patch, adhesive label, protective film, plaster, cataplasm and other products. The working time of the test piece is characterized by hanging the weight of the test piece from the lower part of the test piece, and the working time of the hanging weight on the lower end of the test piece is characterized by a certain amount of time for hanging the test piece off the adhesive plate.

Technical parameters of three position viscosity tester:

1. Standard roller: 2000g ± 50g

2. Weight: 1000g ± 10g (including the weight of loading plate)

3. Test plate: 60 × 40 × 1.5mm (L × w × d)

4. Timing range: 0-10000h (standard configuration)

5. Number of jobs: 3, 5

6. Dimensions: 360 × 240 × 420 mm, 600 × 240 × 420mm (L × w × h)

7. Power supply: AC 220 V, 50 Hz

8. 20kg: net weight

9. Standard configuration: main engine, standard press roll and test board

Executive standard of three position stickiness tester:

GB 4851 test method for adhesion of pressure sensitive adhesive tapes

ASTM d3654 Standard Test Method for shear viscosity of pressure sensitive adhesive tape

JIS z0237 test methods for pressure sensitive adhesive tape and pressure sensitive adhesive sheet

Instructions for three position viscosity tester:

When a weight of specified weight is suspended vertically along the length direction of the pressure-sensitive adhesive tape pasted on the adherent, the displacement resistance of the adhesive tape can be improved. It is expressed by the time of moving the test piece for a certain distance or the moving distance within a certain time.

Testing principle of three position viscosity tester:

The test specimen can be hung on the lower part of the test piece for a certain amount of time, and the weight of the sample can be hung on the test frame for a certain amount of time.

1. Place the instrument horizontally, turn on the power switch, and place the weight in the slot under the hanger.

2. After removing 3-5 turns of adhesive tape on the outermost layer of the adhesive tape test paper, the sample roll is untied at a rate of about 300 mm / min (the isolation layer of the sheet sample is also removed at the same rate). The samples with a width of 25 mm and a length of about 100 mm are cut in the middle of the adhesive tape every 200 mm. Unless otherwise specified, the number of specimens in each group shall not be less than three.

3. Wipe the test plate and loading plate with cleaning agent with wiping material, then dry them carefully with clean gauze, and clean it repeatedly for three times. Above, until the working surface of the plate is cleaned by visual inspection. After cleaning, do not touch the working surface of the board with hands or other objects.

4. Under the condition of temperature of 23 ℃± 2 ℃ and relative humidity of 65% ± 5%, the specimen is pasted parallel to the longitudinal direction of the plate and pasted in the middle of the adjacent test plate and loading plate according to the size specified in Figure 2. Roll the specimen with a press roller at a speed of about 300 mm / min. Note that during rolling, only the force generated by the roller mass can be applied to the sample. The number of rolling can be specified according to the specific product conditions, if not specified, the reciprocating rolling three times.

5. After the specimen is pasted on the plate, it shall be placed for 20 min at 23 ℃ ± 2 ℃ and 65% ± 5% relative humidity. Then the test plate is vertically fixed on the test stand, and the weight is gently connected to the loading plate. The whole test stand is placed in the test environment or test box that has been adjusted to the required test environment.

6. Press the start key to start timing.

7. After reaching the specified time, remove the weight. Measure the sliding displacement of the sample with a graduated magnifying glass, accurate to 0.1 mm; or record the time when the sample falls off the test plate (common method). If the time is more than or equal to 1 h, the unit is min, and the unit is s if the time is less than 1 h.

Packing list of three station stickiness tester:

host

Standard press roll

5 test plates

3 or 5 weights

 Three position viscosity tester

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fifteen billion eight hundred and thirty-three million seven hundred and eighty-nine thousand and two