Composite used for light control or privacy

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

283 73, 283 94, 380 54, B31B 160, G09C 300

Patent

active

058581391

ABSTRACT:
A composite including a polymeric film having a first generally planar major surface and an opposite second major surface defined by a multiplicity of elongate parallel contiguous ridge portions. The ridge portions each have a generally triangular cross section and elongate obscured and transmitting second major surface portions intersecting at the apex of the ridge with the obscured second major surface portion being on the side of the ridge generally facing a first end of the sheet and the transmitting second major surface portions being on the side of the ridge portions adjacent a second end of the sheet. The film can provide visual transmission between its first major surface and the transmitting second major surface portions while coatings along the obscured second major surface portions prevent viewing of visual images through the film; whereas the composite can also provide light transmission between the first major surface and the transmitting second major surface portions, while the coatings along the obscured second major surface portions restrict light transmission.

REFERENCES:
patent: 3689346 (1972-09-01), Rouland
patent: 4033059 (1977-07-01), Hutton et al.
patent: 4127693 (1978-11-01), Lemelson
patent: 4812709 (1989-03-01), Dudasik
patent: 5171624 (1992-12-01), Walter
patent: 5301987 (1994-04-01), Nesis
Neues Aus Der Technik, No. 4, 15 Dec. 1988 Wurzburg DE, page 4, "Light-Valve Display" Translation.
IBM Technical Disclosure Bulletin, vol. 14, No. 8, Jan. 1972 New York, US, p. 2463, K. L. Foster et al. "Antiglare and reflection covers for transparent surfaces".

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