How to use die-cutting materials first

1. In the selection of die-cutting materials，We usually use silicone tape to match fluoride release film and acrylic tape paired with silicone oil film, of course, the materials chosen for different products will also vary.

2. MY-2G is used for testing the release force of fluorine release film, and TESA7475 is used for testing the release force of silicone oil film (specific testing steps can refer to the standards provided by the manufacturer)

Common problems and precautions

1、 Pay attention to distinguishing between the front and back sides of the single sided release film. As the single sided release film only has one side for release and the other side is the PET substrate surface, if the release film is used on the wrong side, it will cause the film to stick to the board surface after pressing, making it difficult to tear it off.

There are the following methods for distinguishing the front and back:

1. Use adhesive paper to stick the release film surface. If it can be adhered, it is the PET substrate surface, and the non adhered surface is the release surface;

2. Mark the front and back of the film to distinguish between the front and back.

2、 The surface static electricity of the release film can easily adhere to dust particles and affect the quality of the board surface if the static electricity of the release film is too high; Similarly, in order to reduce static electricity in the release film, special treatment should be taken for static electricity during coating, winding, and cutting.

3、 The cleanliness of release membranes is currently an important factor that restricts the widespread use of high-quality fluorine release membranes in HDI production; Therefore, manufacturers or suppliers of durable release films must operate in clean rooms when coating, winding, and cutting release films. The clean room must reach a level of 10000 to ensure the surface cleanliness of the release film, thereby ensuring the quality of the RCC pressed board.

In addition, attention should also be paid to the temperature of the PET release film pressing plate. The material temperature should be lower than the pressing plate table temperature, as currently the withstand temperature is approximately 200 degrees. If the temperature of the pressing plate exceeds this degree Celsius, aging and brittle cracking may occur, and there may be problems with sticking or contaminating the plate surface. The above precautions can effectively avoid the occurrence of various common problems.