Title:
PAPER FOR WATERCOLOR
Document Type and Number:
Japanese Patent JP3653152
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain paper for watercolor having vivid color and good reproducibility of color by subjecting ramie fiber mercerized in tension-free state and having characteristics such as a specific swelling degree and exhaustion degree to mixed papermaking with chemical pulp.
SOLUTION: A ramie fiber is immersed in an aqueous sodium hydroxide solution having 150-350g/l, preferably 180-250g/l, more preferably 200-220gel concentration and subjected to mercerization treatment in tension-free state to afford ramie fiber having characteristics comprising 4-12% elongation, 5.0-6.O de average denier, 70-85% swelling degree (JIS L-1015) and 90-95% exhaustion degree of direct dye (JIS L-1015) and the ramie fiber in an amount of 5-95wt.%, preferably 10-50wt.%, more preferably 30-40wt.% based on total amount of the ramie fiber and the fiber is cut into a definite fiber length of 2-15mm, preferably 3-5mm, and 5-95wt.%, preferably 10-50wt.%, more preferably 30-40wt.% of the cut ramie fiber is added to the chemical pulp and ramie fiber is subjected to mixed paper making with the chemical pulp to provide the objective paper for watercolor.
Inventors:
Shozaburo Dobashi
Application Number:
JP31927496A
Publication Date:
May 25, 2005
Filing Date:
November 29, 1996
Export Citation:
Assignee:
Tosco Co., Ltd.
International Classes:
D21C9/00; D21H11/12; D21H11/16; D21H11/18; (IPC1-7): D21H11/18; D21H11/12
Domestic Patent References:
| JP488521B1 | ||||
| JP5279985A | ||||
| JP8113895A | ||||
| JP1018195A |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Kenji Asai
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Kenji Asai
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