| 摘要 |
PROBLEM TO BE SOLVED: To provide paperboard with excellent disaggregation in water, keeping high strength in use, however losing the strength in water, thus exhibiting such disaggregation as to be disintegrated into fibrous form by the action of a given water current. SOLUTION: The paperboard is a multilayer-strained paperboard of at least two layers with a basis weight of 25-130 g/m<SP>2</SP>per layer and an interlaminar strength (TAPPI UM522) of 0.38-0.90 MPa. The paperboard keeps its high strength in use, however, loses the strength in water, and is readily disintegrated by the action of a given water current. Therefore, while being easy to wipe off dirts, the paperboard has slight possibility of causing troubles such as pipe clogged with paperboard discarded in discharging water current after use, thus being convenient in handling and easy in aftertreatment as well. COPYRIGHT: (C)2008,JPO&INPIT
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