Reinforced fluted medium and corrugated fiberboard made using th

Details Reinforced fluted medium and corrugated fiberboard made using th Reinforced fluted medium and corrugated fiberboard made using th

1991-04-25

1994-05-31

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428184, 428186, 428195, B32B 328

Patent

active

053168283

ABSTRACT:
Fluted corrugating media of unconventional configuration and the methods for their manufacture for use in corrugated fiberboard are described. These media may be asymmetrical in configuration or have very sharply angled flute tips. The new configurations are formed using at least one secondary corrugating stage to prevent tearing during formation. The flat crush strength of the medium may be enhanced by applying parallel lines of adhesive transversely to the flutes on at least one side. These adhesive lines at least partially fill the valleys of the flutes along the lines.

REFERENCES:
patent: 2973295 (1961-02-01), Rodgers, Jr.
patent: 3691002 (1972-09-01), Blandy
Chow, D. K. Design of cost-effective flute features in corrugating medium. Tappi Journal, pp. 126-128, Oct. 1986.
Liu, Jen y. Flat-crush failure mechanism of corrugated fiberboard. Journal of Applied Mechanics, 53 (9): 602-608 (1986).
Sofinowski, John R. Trends in high-speed single facer design. Tappi Journal, pp. 43-47, Oct. 1987.

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