Method of forming a lignin reinforced cellulosic product

Details Method of forming a lignin reinforced cellulosic product Method of forming a lignin reinforced cellulosic product

1992-03-11

1994-08-16

Loney, Donald J.

Paper making and fiber liberation

Processes and products

Non-fiber additive

162162, 162223, 162225, 264175, 264286, 264505, D21H 1100

Patent

active

053384040

ABSTRACT:
Preformed cellulosic linerboard as utilized in the manufacture of corrugated products is provided with enhanced crush strength by a combined lignin-coating and calendering treatment. The linerboard is coated with an aqueous lignin-containing solution and then, with the coating in a wet or dry state, subjected to at least one pass through a calender nip to substantially increase the CD crush strength of the treated linerboard over the CD crush strength of an untreated linerboard or a lignin treated but uncalendered linerboard. The linerboard may be laminated with a substantially air and moisture impervious sheet to inhibit bleeding of the lignin coating in high humidity conditions.

REFERENCES:
patent: 3849184 (1974-11-01), Roberts
Tomis, B.; Kaderabek, V.; Milichovsky, M.; Vyskum. Prace Odboru Papiera Celulozy 24: V1-5 (1979); Dialog Abstract, Accession No. 266448.
Tomis, B.; Milichovsky, M.; Papir Celuloza 39, No. 2: V28-31, 41 (1984); Dialog Abstract, Acession No. 370907.
Yano, S.; Hatakeyama, T.; Hatakeyama, H.; Rept. Progr. Polymer Phys. Japan 25: 417-418 (1982); Dialog Abstract, Accession No. 370649.
Ceragioli, G.; Croce, A.; Capretti, G.; Ind. Carta 25, No. 4; 173-184 (Apr. 1987); Dialog Abstract, Accession No. 424664.
Sulan, S. and Viluda, J.; Czechosl. Pat. 192,249, Issued Sep. 25, 1981, 4 p. CL.D21C11/02. Filed: Czechosl. appln. 3,830/77 (Jul. 10, 1977).

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