BIAX FILM | MARKETS
Production of biaxially oriented capacitor films
requires a different extrusion system and a clean room, which in turn requires dedicated lines, generally narrower than for packaging applications and ≤5 metres. While the average thickness is 6 microns, this can go below 2 microns. Production is therefore limited to companies that are capable of producing very thin films with high mechanical strength, uniform thickness, homogeneous electrical and thermal properties and with low gels, and most companies produce the film for in-house use. This, combined with the high capital costs, limited number of OEMs and lengthy lead times has created some high barriers into the industry, and as a result the number of producers remains relatively small. Although the early development of the BOPP and BOPET capacitor film industries were pio- neered in Europe, today these markets are driven by the growth and development of the electronics industry which largely occurs in Asia. As such, production is centred in East Asia, namely China, South Korea and Japan, where often the metallising companies also manufacture the film capacitors. In North East Asia, capacitor film is in high demand for general electric and electronic products
as well as the growing EV market, and producers in the region are able to supply the thin and ultra-thin films to cater to this need. With films typically 3 microns thick, resin demand is small but demand for the films themselves is growing strongly. India is enjoying exponential growth in capacitor films thanks to the country’s renewed focus on new energy sectors, an accommodating duty structure, and the industry’s drive to reduce exports from China. Significant investment in local manufactur- ing is underway.
But it is China which remains the world’s largest manufacturer of capacitor film, accounting for the majority of the world’s market, although high-end capacitor films are still imported. Strong demand across products including remote video, medical care production equipment, servers and new energy markets has seen the Chinese capacitor film market enjoy double digit growth in recent years with BOPP capacitor film in particular offering strong perfor- mance characteristics and the industry is continuing to see strong investment by major players. n This content is an extract from a full market report, with accompanying data set, which was published in Orientate. Find out more here
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