Electret and card assembly and method of manufacture

Details Electret and card assembly and method of manufacture Electret and card assembly and method of manufacture

2011-07-05

2011-07-05

Chang, Victor S (Department: 1788)

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

C428S042200

Reexamination Certificate

active

07972671

ABSTRACT:
This invention includes a card assembly incorporating an electrostatically charged polyolefin film, or electret, removably adhered to a paper stock or card substrate. The electret and card assembly is printable on up to four planar surfaces, with both the electret film and paper stock or card having a front and back side that is printable. When the electret is detached from the card, the charged or “static cling” electret is placeable on and self-adheres to smooth surfaces for graphic information display purposes and the printed card is then utilized for various other purposes. The electret film is removably adhered to the paper stock by a coating or “dots” of adhesive and a release agent may be applied to the back or underside of the electret to prevent premature separation and loss of electrostatic properties while maintaining optimum electret film removability. A method of manufacturing a printable electret and card assembly by integrating an electrically charged or “static cling” electret film and paper stock or card substrate using an adhesive to define a composite structure or assembly having various multiple images that may be disposed in registering relationship with respect to each other.

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patent: 6416835 (2002-07-01), Preston et al.
patent: 6508904 (2003-01-01), Charley

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