Release film, also known as release film, isolation film, separation film, glue resist film, release film, film, plastic film, mask film, silicone oil film, silicone oil paper, anti mucous membrane, type paper, slip film, Tianna paper, release paper, silliconfilm, release film, release, non-woven film.

Generally, in order to increase the release force of the plastic film, the plastic film will be plasma treated, or coated with fluorine, or coated with silicon release agent on the surface of the film material, such as pet, PE, OPP, etc; It can show extremely light and stable release force for various organic pressure sensitive adhesives (such as hot melt adhesive, acrylic adhesive and rubber pressure sensitive adhesive). According to the release force of release film required by different, the viscosity of isolation product adhesive is different, and the release force shall be adjusted accordingly to achieve extremely light and stable release force during stripping.

Why do so many listed companies get together to enter the release membrane Market for MLCC? How big is the market? What is the future growth?

According to statistics, the overall market growth rate of MLCC is expected to remain above 10% in at least the next three years.

According to the public data, affected by the trend of high volume and miniaturization, the annual changes of the average number of laminations and the cross-sectional area of single-layer MLCC since 2017 are 5% and – 3% respectively. It is assumed that the area of release film consumed for the production of single-layer MLCC is roughly the same as that of MLCC; According to the average, a single MLCC is stacked by 400 single layers, and assuming that the area of single layer MLCC is 5 mm2, it is estimated that the global demand for MLCC release film in 2019 is about 9 billion m2. According to the current average market price, it is estimated that the global MLCC release film market scale in 2019 will be about 20 billion yuan, and it is expected to exceed 30 billion yuan by 2025, with an average annual compound growth rate of 10%. This is also the main reason why so many manufacturers enter the MLCC release membrane market.

MLCC structure diagram is sourced from Murata’s official website

From the perspective of MLCC structure, high-capacity products can be obtained by increasing the number of ceramic layers without changing the size. It is understood that some Japanese and Korean MLCC manufacturers can achieve 1-2 μ M thin film media stack more than 1000 layers, and domestic manufacturers are also developing towards the number of super 500 high-rise buildings. Since PET film will be used in each layer of multilayer structure in the production process of MLCC, the development of miniaturization trend will increase the use of MLCC release film. This will certainly enable the original manufacturers to increase production capacity and attract more enterprises to carry out R & D and production of MLCC release film.

02

MLCC release membrane and its function

MLCC release film is coated with silicone release agent on the surface of PET polyester film. It plays the role of carrying raw porcelain during tape casting coating in the process of MLCC tape casting production. The ceramic slurry is coated on the PET film through the pouring port of the casting machine, so as to form a uniform slurry thin layer, and then the ceramic film is obtained after drying in the hot air area.

Release membrane structure for MLCC

Synthesis route of release membrane for MLCC

The raw materials of MLCC release film are mainly PET film and silicone release agent. PET film requires very high smoothness. Japan’s Toray and Emperor DuPont are the main manufacturers in the world; Silicone release agents are mainly provided by foreign manufacturers, mainly including Dow Corning, Wacker, Xinyue, etc. According to the industry information, the cost of release film accounts for 10% ~ 20% in MLCC production.