Shaped interlayer blank

Details Shaped interlayer blank Shaped interlayer blank

1989-10-12

1992-07-14

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428157, 428192, 428194, 428195, 428207, 428213, 428215, 428210, 428220, 428437, B32B 300

Patent

active

051301741

ABSTRACT:
A shaped interlayer blank adapted for use with glass in a vehicle windshield, such blank formed of plasticized polyvinyl butyral and having a quadrilateral peripheral contour with two sides of arcuate shape and a wedge-shaped thickness profile. The blank preferably has an arcuate gradient color band substantially parallel to an arcuate edge of the blank in the greater thickness region of the blank. The wedge-shaped thickness gradually increases from about 30 mils to about 35 to 40 mils across the width of the blank. The blank is tailored for safety windshields featureing head-up displays where to function effectively the glass layes must be nonparallel and canted with respect to each other.

REFERENCES:
patent: 2937407 (1960-03-01), Richardson
patent: 3019475 (1962-02-01), Smith
patent: 3696186 (1972-10-01), Stark et al.
patent: 3868286 (1975-02-01), Fariss et al.
patent: 3885899 (1975-05-01), Gurta et al.
patent: 3912440 (1975-10-01), Koss et al.
patent: 3922456 (1975-11-01), Baldridge
patent: 4302263 (1981-11-01), Postupack
patent: 4316868 (1982-02-01), Esposito et al.
patent: 5013134 (1991-05-01), Smith

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