Padded book panel construction

Details Padded book panel construction Padded book panel construction

1987-10-19

1988-05-31

Thomas, Alexander S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428184, 428212, 281 15R, B32B 312

Patent

active

047480670

ABSTRACT:
A padded book panel which utilizes three flat chipboard layers between which are positioned an upper undulating layer and a lower undulating layer.
The undulating layers are of generally longer fiber length than the flat chipboard layers.
In a preferred embodiment, the upper undulating layer has longer arms or flutes thereon so that, when passed through a treating pressure roller, the arms of the upper undulating layer are permanently bent or creased. The arms of the lower undulating layer, being of shorter height, are not bent during the roller treating softening process.
The resulting structure is then utilized as an economically manufactured and high-quality padded book panel.

REFERENCES:
patent: 3935360 (1976-01-01), Brown
patent: 4673608 (1987-06-01), Cline
patent: 4710417 (1987-12-01), Cline

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