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2 155 835

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C1

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IPC

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Application

2000106859/12, 2000-03-22

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Start date

2000-03-22

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Actual filing date

2000-03-22

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Published

2000-09-10

(72)

Inventor

Leonov V.P.Osipov P.S.Novikov G.A.Beljaeva I.M.Galkina L.A.Medvedeva N.G.Njuksha Ju.P.Starova E.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Vserossijskij Nauchno-Issledovatel'Skij Institut Tselljulozno-Bumazhnoj PromyshlennostiBiblioteka Ran

PAPERBOARD FOR PRESERVATION OF DOCUMENTS Russian patent published in 2000 - IPC

Abstract RU 2155835 C1

FIELD: paper-and-pulp industry. SUBSTANCE: paperboard is made from paper-pulp containing cellulose fiber, alkaline buffer (calcium carbonate) and aluminum- containing component (fine aluminum hydroxide with 0.5-1.0% of water- soluble substances). Paperboard is made in one layer with surface weight 400 to 1000 g/sq. m. Paper-pulp can further contain substance for alkaline sizing in amount 0.2 to 1.0 wt parts per 100 wt parts of cellulose fiber. Cellulose fiber is mainly bleached sulfate softwood cellulose with 86- 96% alpha-cellulose. EFFECT: improved quality and workability of paperboard. 3 cl, 1 tbl

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RU 2 155 835 C1

Authors

Leonov V.P.

Osipov P.S.

Novikov G.A.

Beljaeva I.M.

Galkina L.A.

Medvedeva N.G.

Njuksha Ju.P.

Starova E.V.

Dates

2000-09-10—Published

2000-03-22—Filed

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