Double-sided adhesive tape is paper, cloth, plastic film as a substrate, and then the elastomer-type pressure-sensitive adhesive or resin-type pressure-sensitive adhesive uniformly coated in the above substrate made of rolls of adhesive tape, is composed of three parts: substrate, adhesive, isolation paper (film).

Coating process is an indispensable part of the adhesive tape industry. Coating process refers to the coating evenly coated on the film or paper, and drying, curing process. The quality of the coating process directly affects the performance and quality of the adhesive tape. Unqualified coating process will lead to insufficient adhesive force, shedding and other serious problems, affecting the use and sales of products.

The coating process in the adhesive tape industry generally uses a reverse coating process. This process first coats the adhesive on the substrate, and then makes the tape through drying, calendering, cutting and other processes. The reverse coating process allows the adhesive to adhere evenly to the substrate, thus ensuring the performance and quality of the product. However, there are some problems with this process, such as incomplete glue evaporation, uneven coating thickness and false deposition. All these problems need to be adjusted and solved by the operator in time.

In daily production, adhesive tape manufacturers need to pay attention to some key aspects of the coating process to ensure product quality as much as possible. First of all, attention should be paid to the selection and modulation of the glue to ensure its coatability and viscosity. Then, attention also needs to be paid to the setting and adjustment of the coating machine to ensure uniform coating by controlling parameters such as coating weight, line speed, air pressure, etc., and adjusting the coating thickness to eliminate problems such as false deposition.

In addition, attention should also be paid to the water content, curing time and other aspects to ensure that the coated adhesive tape can be normal operation and use. In short, the coating process is the core link in the adhesive tape industry, the product performance and quality has a huge impact. Only pay attention to the quality control of the coating process, and constantly optimize the technology and process, in order to produce high-quality, high-performance adhesive tape products.

The coating method of adhesive tape:

1, transfer coating: peel the paper on the adhesive by the oven after drying, and laminated materials, so that the adhesive transfer to the laminated material. Applicable to double-sided adhesive tape, labeling class single-sided tape and foam type substrate tape.

Characteristics: the thickness of the film is uniform, the total thickness of the tape depends on the thickness deviation of the laminating material, the finished tape or the process needs to be used to peel off the use of peeling paper when the maximum temperature of the oven can be controlled up to 120°C.

2、Straight coating: also known as from the back of the roll. Suitable for packaging tape, and then peel type adhesive coated directly on the substrate rolled up.

Characteristics: the glue is easy to penetrate into the interior of the substrate, good adhesion, the total thickness of the tape is the same, the material has deviation, the thickness of the glue layer changes exactly in reverse; drying speed and temperature depends on the type of substrate.