Forgery-preventive fretwork paper

Details Forgery-preventive fretwork paper Forgery-preventive fretwork paper

1997-01-13

1999-02-16

Watkins, III, William P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428141, 428156, 428910, 428916, 428516, 101 32, 283107, 283108, 283109, 283110, 283111, B32B 300, B31F 107, B42D 1510

Patent

active

058718338

ABSTRACT:
A forgery-preventive fretwork paper comprising a support layer and an engraving coating layer, the support layer being a stretched laminate which comprises a biaxially stretched propylene resin film layer as a base layer and, laminated thereto on each of front and back sides thereof, a uniaxially stretched propylene resin film layer containing fine inorganic powder, wherein said support layer has (1) an opacity (JIS P-8138) of from 50 to 100% and (2) a density (JIS P-8188) of from 0.70 to 1.4 g/cm.sup.3, and the paper bearing an engraving extending into the engraving coating layer or to one of the uniaxially stretched films of the support layer.

REFERENCES:
patent: 4663216 (1987-05-01), Toyoda et al.
patent: 5298307 (1994-03-01), Suzuki et al.

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