Since the 1930's, Bollore has been among the worldwide leaders in the production and development of dielectric materials for wound capacitors. Originally a paper manufacturer, Bollore has developed and produced many different grades of electrostatic and electrolytic condenser tissue papers. The expertise developed during these many years prompted Bollore to invest in the manufacture of dielectric polypropylene films, using the stenter frame process. Today, Bollore is a world leader in the production of dielectric OPP (biaxially-oriented polypropylene) films for capacitors. This material is at the core of modern wound film capacitor technology.

Polypropylene films and metallized plastic films are the main components used in the AC and DC capacitor industry.

In 1983, Bollore opened its USA factory in Dayville, Connecticut in order to metallize dielectric polypropylene film for the capacitor market. As a result, Bollore Incorporated is responsible for the sale and manufacturing of dielectric metallized polypropylene films worldwide.

The continuous search for deceasing volume, weight, and cost has lead capacitor manufacturers to use more and more metallized film.

Product Grade Description
Metallized Polypropylene
Zinc PPTS Smooth polypropylene film
Aluminum PPRT Rough polypropylene film
Alloy HCPP High temperature resistance smooth polypropylene film
With or without heavy edge.
     
Plain Films
  HCPP Plain high temperature/High Crystalline polypropylene film
  OPP/PPR Rough or Hazy Polypropylene<
  HSPP Heat Sealable for overwrap/outer wrap
     
Specialty Films
  HIGH-OHMS  
  SERIES  
  SLOPED/GRADED