Biaxially-Oriented Polypropylene (BOPP) films
Mirwec Film Inc. manufactures biaxially-oriented polypropylene film, which is primarily used in high voltage power capacitors. The film is manufactured in a HEPA filtered production area to maintain a high level of cleanliness.
The film is manufactured by the bubble process using highly purified polypropylene resin. Thickness variation and surface roughness is randomized over 360 degrees utilizing turntable rotation of the film machine. Our unique process allows us to increase or decrease the space factor according to customer specifications.
Film is converted using state of the art slitting machines. Any film thickness can be converted to a specific width and length per customer specification. (inch or metric) This slitter is capable of producing from 10.0 to 24 inches.
If required a secondary slitter can be used to convert to widths of 1.0 to 10.0 inches. All converting is performed in HEPA filtered environment.
Mirwec is offering converting services to customers that want to convert from mill rolls or master rolls. Mirwec can handle mill rolls up to 64 inch width 24 inch diameter on 6 inch ID cores. Master rolls may be supplied up to 24 inch width 12 inch diameter on 3 inch ID cores. Rolls can be converted to any width or length customer specifies. (inch or metric) Finished rolls would be supplied on 3 inch ID diameter cores. Converting would be done on a wide width or narrow width slitter in a HEPA filtered environment.
The process of making BOPP flim begins by converting polypropylene resin to high-quality film, then slitting the film rolls to the desired specifications.
BOPLON® film has many important properties that can categorized into three basic areas:
Film thickness by weight or micrometer, density and space factor (% surface alteration)
Heat shrinkage at 100 or 120 °C, tensile strength and elongation at break
Breakdown voltage, volume resistivity and dissipation factor