Method for forming a retroreflective sheeting having a plurality

Details Method for forming a retroreflective sheeting having a plurality Method for forming a retroreflective sheeting having a plurality

1997-11-21

2000-03-21

Dixon, Merrick

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

Utilizing surface to be reproduced as an impression pattern

264219, 264225, 264226, 427164, 427165, B29C 3340

Patent

active

060399090

ABSTRACT:
The method for forming a retroreflective sheeting includes providing a first layer and forming a prism array on the first layer. A second layer is applied to the prism array. The first thermoplastic layer is welded to the second thermoplastic layer, while applying a die having a plurality of cells with multi-course, hatched patterned perimeters to the layers to dislocate a portion of the prism array, thereby allowing the first layer to be bonded to the second layer at the portion.

REFERENCES:
patent: 3190178 (1965-06-01), McKenzie
patent: 3684348 (1972-08-01), Rowland
patent: 3810804 (1974-05-01), Rowland
patent: 4243618 (1981-01-01), Van Arnam
patent: 4618518 (1986-10-01), Pricone et al.
patent: 4801193 (1989-01-01), Martin
patent: 5171624 (1992-12-01), Walter

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