How to test the viscosity of BOPP thermal sensitive synthetic paper?

The following methods can be used to test the viscosity of BOPP thermal sensitive synthetic paper:

1、 Peel strength test

Peel strength testing is a commonly used method for testing the adhesion of BOPP thermosensitive synthetic paper. The specific steps are as follows:

Prepare a small piece of BOPP thermal sensitive synthetic paper and a smooth test surface (such as glass plate, metal plate, etc.).

Stick BOPP thermosensitive synthetic paper onto the test surface, ensuring a smooth and bubble free adhesion.

Use a peel strength tester or similar equipment to peel off BOPP thermosensitive synthetic paper at a constant speed.

Record the magnitude of the force required for peeling, which reflects the adhesive strength of BOPP thermosensitive synthetic paper.

Peel strength testing can provide quantitative data on the adhesive performance of BOPP thermosensitive synthetic paper under different conditions.

2、 Observation method

Observation method is a simple and intuitive testing method. The specific steps are as follows:

Stick BOPP thermosensitive synthetic paper onto a smooth test surface.

Observe whether it can firmly adhere and remain intact for a certain period of time.

Determine whether its viscosity meets the requirements based on the observation results.

Although this method is simple, it can only provide qualitative judgments and cannot provide accurate viscosity data.

3、 Tactile method

The tactile method is to feel the stickiness of BOPP thermosensitive synthetic paper by touching its surface with fingers. The specific steps are as follows:

Gently touch the surface of BOPP thermal synthetic paper with your fingers.

Feel whether its surface has stickiness and whether there is a certain resistance when touched by fingers.

Determine whether the stickiness is moderate based on the tactile sensation.

The tactile method can only provide qualitative judgments and is greatly influenced by personal subjective factors.

4、 Professional equipment test

In addition to the above methods, professional testing equipment can also be used to evaluate the viscosity of BOPP thermosensitive synthetic paper. For example:

Viscometer or Viscometer: These devices can measure the resistance of BOPP thermosensitive synthetic paper during the shearing process, in order to evaluate its viscosity. Commonly used viscometers include rotary viscometers and rolling ball viscometers. However, it should be noted that when using a viscometer for testing, suitable samples need to be prepared and tested according to the operating instructions of the equipment.

Tensile testing machine: Although mainly used to measure parameters such as tensile strength and elongation at break of materials, it can also reflect the viscosity of materials to a certain extent. By conducting a tensile test, the deformation and fracture of BOPP thermosensitive synthetic paper during the stretching process can be observed, thereby indirectly evaluating its viscosity.

5、 Precautions

Before conducting the test, it is necessary to ensure that the testing environment (such as temperature, humidity, etc.) meets the standard requirements to avoid the influence of environmental factors on the test results.

The test samples should be representative and in sufficient quantity to ensure the accuracy and reliability of the test results.

When conducting testing, it is necessary to strictly follow the testing methods and equipment operating instructions to avoid errors caused by improper operation.

In summary, peel strength testing is the main method for testing the viscosity of BOPP thermosensitive synthetic paper and can provide quantitative data; Although observation and tactile methods are simple and intuitive, they can only provide qualitative judgments; Professional equipment testing such as viscometers and tensile testing machines can provide more accurate test results, but the operation is relatively complex and costly. Therefore, when choosing a testing method, it should be based on actual needs and conditions.