X-ray or gamma ray systems or devices – Photographic detector support – Dental
Patent
1988-08-19
1990-03-27
Church, Craig E.
X-ray or gamma ray systems or devices
Photographic detector support
Dental
378168, 206455, A61B 614, G03B 4202
Patent
active
049127403
ABSTRACT:
A comfort-enhancing improvement upon a known dental film packet having sensitized film and protective opaque sheets enclosed by a light-tight envelope that includes an opposed pair of generally parallel walls covering the sheets, those walls being joined together along facing marginal areas thereof surrounding the sheets so as to define a main body portion and a perimetric edge portion of the envelope. The improvement comprises a pliant bead of substantially non-porous, non-toxic, polymeric elastomeric material, preferably a silicone resin, that is molded in situ around at least part of the perimetric edge portion to encapsulate that part of the edge portion with such material and thereby provide the encapsulated part with a softer, smoother, and more rounded peripheral surface. In the molding process illustrated, the polymeric elastomeric material is injected under pressure into a mold peripheral-channel of circular cross section surrounding the envelope edge portion; and the mold is then heated for optimal, low-temperature, controlled curing of the bead formed therein.
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Church Craig E.
Dixon William C.
Eastman Kodak Company
Freeman John C.
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