Brand: Sudrui

Equipment name: Initial viscosity tester

English name:PrimaryAdhesive Tester

Product keywords: tape initial adhesion tester, initial adhesion tester, initial adhesion force tester, initial adhesion tester, initial adhesion tester, tape adhesion tester, initial adhesion force tester, pressure-sensitive adhesive initial adhesion tester, initial adhesion force tester, adhesive tape detector

Scope of application: The initial adhesion tester is suitable for conducting initial adhesion testing on pressure-sensitive adhesive tapes, medical patches, adhesive labels, protective films and other related products

Initial viscosity testerSuitable for conducting initial adhesion testing on pressure-sensitive adhesive tapes, self-adhesive labels, and other related products. Label initial adhesion tester executionGB 4852(Test method for initial adhesion of pressure-sensitive adhesive tape)——The standard of inclined rolling ball method adopts the principle of inclined rolling ball method to characterize the initial adhesion performance of adhesive products by the maximum steel ball size that can be adhered.

Roll a steel ball over the adhesive surface of the adhesive tape placed flat on the inclined plate, and evaluate its initial adhesive strength based on the maximum size of the steel ball that can be adhered to the adhesive surface of the specified length; Or roll a steel ball of a specified size over an inclined groove and measure the distance it rolls on the adhesive surface of the adhesive tape on a horizontal plate to evaluate its initial viscosity.

Using the inclined rolling ball method, the initial viscosity of the sample is tested by the adhesion of the adhesive tape to the steel ball when a brief contact occurs between the adhesive surface of the steel ball and the pressure-sensitive tape sample under slight pressure

Equipment features

Using the testing principle of inclined rolling ball method to test the instantaneous adhesion performance of the sample

The test steel balls designed completely in accordance with national standards ensure high accuracy of the test data

The testing tilt angle can be freely adjusted according to the user's needs

Adjustable tilt angle:0～60°

Table width:120 mm

Trial area width:80 mm

Standard steel ball:1/32Inches~1inch

Overall dimensions:320 mm(L)×140 mm(W)×180 mm(H)

Net weight:6Kg

Standard Configuration

Host1-32One box of standard steel balls

operating steps

1Preparation work

1．1Adjust the inclined rolling ball device to a horizontal position, and unless otherwise specified, adjust the inclination angle of the inclined plate to30°.

1．2Wipe the glass surface and both sides of the polyester film with degreased gauze dipped in cleaning agent, and then wipe clean with gauze.

1．3Soak the steel ball with rust proof oil removed in a container containing disinfectant for several minutes. After removing it, repeatedly clean and wipe it with a clean cleaning agent and gauze, and then wipe it clean with a clean gauze. The cleaned steel ball should be picked up with clean bamboo (wood, bone) tweezers and other tools.

1．4 According to the standard diagram2As shown, place the adhesive tape sample with its adhesive surface facing upwards on an inclined plate. Cover the designated area with polyester film as an auxiliary rolling section. The rolling assistance section should be smooth and free of defects such as bubbles and wrinkles. Below the assisted rolling section100mmThe scope is the testing section.

1．5Use adhesive to fix the two sides of the rolling aid section and the lower end of the sample on the inclined plate. If necessary, adhesive tape can also be used to fix along the edges of both sides of the test section, so that the sample is flat and adheres to the board.

1．6Use a stopper to clamp the steel ball into the ball runner, adjust the front and rear positions of the ball runner so that the center of the steel ball is located on the starting line of the rolling aid. Before formal testing, a sample is allowed to be tested multiple times, but the left and right positions of the ball runner should be adjusted so that the trajectory of the steel ball each time it rolls does not overlap. The width of the sample is greater than25 mmAt the center of the sample25mmThe wide area is the effective testing area.

2Pre select the largest steel ball

2．1 Gently tap the ball release device and observe whether the rolling steel ball is stuck in the test section (stop moving for more than)5sBelow). From large to small, take steel balls of different sizes for appropriate testing until the largest steel ball size that can adhere to the test section is found.

2．2Take the steel ball with the largest ball number mentioned above and the two balls of the same size connected to it, and conduct one test each on the same sample to confirm the steel ball with the largest ball number.

3Formal testing

取3Conduct a rolling test on each sample using the largest ball size steel ball. If a certain sample cannot stick to this steel ball, a steel ball with a ball size only smaller than it can be used for one test. If it still cannot stick, it must be tested according to1～3Retest.

Operation precautions

1.The test results are represented by the steel ball number.

2.In3In the steel balls adhered to each sample, if3If all of them are maximum ball size steel balls, or if two of them are maximum ball size steel balls and the other ball size is only smaller than the maximum ball size, the test result shall be represented by the maximum ball size; If one is a steel ball with the largest ball size, while the other two steel balls have ball sizes only smaller than the largest ball size, the test result is represented by the ball size of the steel ball that is only smaller than the largest ball size.

3.This experiment must fully comply withGB/T4852-2002And relevant standards shall be followed.