Method for the manufacture of security paper
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United States of America Patent
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Feb 16, 1999
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jun 14, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Security paper carries an intricate tactile surface profile pattern which has been imparted to the paper during its manufacture, at a stage after initial de-watering but before final drying, by passing the paper through a nip between a forming surface corresponding to the desired pattern and a backing surface. The tactile pattern is of excellent durability, and its intricacy offers a high degree of security. The tactile pattern is visible when viewed under low angle light, which facilitates verification or authentication of security documents made using the patterned paper.
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