Method and apparatus for producing seamless retroreflective shee

Details Method and apparatus for producing seamless retroreflective shee Method and apparatus for producing seamless retroreflective shee

1995-05-19

1996-09-24

Stemmer, Daniel J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 264 16, 264 19, 264214, 359530, 359900, B29C 3920, B29D 1100, G02B 5124

Patent

active

055587402

ABSTRACT:
A method and apparatus for forming "seamless" retroreflective sheeting is described. At least two mold surfaces are used, each having alternate areas of arrays of prism recesses and spaces. In a first step, prisms are formed in one of the mold surfaces and applied to a base film or web. Next, prisms are formed on the second mold surface and applied to the spaced areas left in the first step.

REFERENCES:
patent: 3689346 (1972-09-01), Rowland
patent: 3810804 (1974-05-01), Rowland
patent: 3935359 (1976-01-01), Rowland
patent: 4244683 (1981-01-01), Rowland
patent: 4601861 (1986-07-01), Pricone

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