Method and apparatus for the production of electret material

Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

264 24, 264 25, 264104, 361233, 4251744, 4251748E, H01G 702, B29D 722

Patent

active

045129401

ABSTRACT:
An electret material is formed by the method which includes the step of passing a pair of electrical conductor elements along the surface of a dielectric material heated to a predetermined temperature. The conductor elements are supported between a pair of support members driven in a direction to move the conductor elements along the surface of the dielectric material for applying an electrical field to the material. A heating element positioned adjacent the surface of the dielectric material and movable with the conductor element heats an area of the dielectric material located between the conductor elements enabling the material to be polarized by the electrical field, thereby producing an electret.

REFERENCES:
patent: 2740184 (1956-04-01), Thomas
patent: 3878274 (1975-04-01), Murayama et al.
patent: 3885301 (1975-05-01), Murayama
patent: 4127681 (1978-11-01), Ferren et al.
patent: 4166088 (1979-08-01), Neefe
patent: 4348711 (1982-09-01), Else et al.
patent: 4375718 (1983-03-01), Wadsworth et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for the production of electret material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the production of electret material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the production of electret material will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-36481

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.