Card – picture – or sign exhibiting – Display card – Having a curved display panel
Patent
1985-04-17
1992-08-25
Dorner, Kenneth J.
Card, picture, or sign exhibiting
Display card
Having a curved display panel
428191, 428332, A47G 106
Patent
active
051407647
ABSTRACT:
A multi-channel transparent jacket for accommodating strips of microfilm to create a microfiche, the jacket having non-blocking characteristics, thereby minimizing the tendency of one jacket in a stack thereof to stick to an adjacent jacket. The jacket is constituted by front and rear panels formed of flexible polyethylene terephthalate film joined together by a parallel array of ribs to define the channels. The exposed surfaces of the panels have a friction-reducing layer thereon constituted by a multiplicity of discrete silicon dioxide nodules bonded to the film, the nodule shape approximating a surface segment of a sphere. The peaks of the segments form microscopic contact points which are bonded by molecular attraction to an abutting panel when the jacket is juxtaposed against a like jacket in frictional relationship thereto. The nodules have a relatively large average diameter whereby the population density thereof in a unit area of the layer produces multiple contact points resulting in a coefficient of friction whose value imparts non-blocking characteristics to the jacket to a degree permitting tangential displacement thereof with a like jacket sticking thereto.
REFERENCES:
patent: 3238655 (1966-03-01), Engelstein
patent: 3540959 (1970-11-01), Conner
patent: 3713535 (1973-01-01), Engelstein et al.
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patent: 4411945 (1983-10-01), Akad et al.
patent: 4452666 (1984-06-01), Dorman
patent: 4477502 (1984-10-01), O'Sullivan
patent: 4518643 (1985-05-01), Francis
Dorner Kenneth J.
Ebert Michael
Green Brian K.
NB Jackets de Puerto Rico
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