Retroreflective sheet material with controlled stretch and metho

Details Retroreflective sheet material with controlled stretch and metho Retroreflective sheet material with controlled stretch and metho

1975-06-13

1976-11-16

Smith, Alfred E.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Including plural heating steps

264 1, G02B 5124

Patent

active

039920801

ABSTRACT:
A composite retroreflective sheet material with controlled stretch is provided by a strip of transparent retroreflective snythetic resin having cube corner formations on one surface thereof bonded to a longitudinally stretched flexible strip of backing material with the cube corners thereadjacent. The composite sheet material is puckered when in a relaxed state and is stretchable on a support surface with the elimination of the puckered condition indicating the proper degree of elongation without distortion of the cube corners. The backing material is stretched 3 - 15% at the time of bonding, and bonding is conveniently only along the longitudinal edges of the two strips. The exposed surface of the backing material may have a high friction or adhesive coating, and the faces of the cube corner formations may have a reflective coating.

REFERENCES:
patent: 2731068 (1950-09-01), Richards
patent: 3173164 (1965-03-01), Congdon
patent: 3357772 (1963-02-01), Rowland
patent: 3357773 (1964-12-01), Rowland
patent: 3636147 (1972-01-01), Rowland
patent: 3741623 (1973-06-01), Milalik

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