Title:
PAPER WITH WATERMARK
Document Type and Number:
Japanese Patent JP2000136500
Kind Code:
A
Abstract:
To obtain paper with watermark without forming the watermark at the papermaking step by a simple process by allowing water to penetrate into a transparent paper obtained by passing the paper to a nipped part between metal rolls under a specific linear load, to provide opaque patterned parts.
This paper with watermark is obtained by allowing water to penetrate into a transparent paper obtained by passing the paper having 30-200 g/m2 unit weight to a nipped part composed of a metal roll at 20-300°C and a metal roll under a condition of 500-3,000 kg/cm linear load, to provide opaque patterned parts. The obtained paper has ≥8% difference of opacities between the transparent part and the opaque part measured based on ISO 2471.
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Inventors:
Suzuki, Yukiko
Application Number:
JP1998000308311
Publication Date:
May 16, 2000
Filing Date:
October 29, 1998
Export Citation:
Assignee:
OJI PAPER CO LTD
International Classes:
B41M3/14; D21H21/40; D21H27/02; B41M3/14; D21H21/40; D21H27/02; (IPC1-7): D21H21/40; D21H27/02
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