DRY-PROCESS NONWOVEN PULP FABRIC COMPOSED OF UNITED LAYER STRUCTURES

摘要

A dry-process nonwoven pulp fabric composed of united layer structures, which comprises: a surface layer part, on each side, comprising heat-bondable synthetic fibers which have been heat-bonded to one another and having a basis weight of 5 to 12 g/m<2>, excluding 5 g/m<2>; and a core layer part comprising 20 to 60 wt.% heat-bondable synthetic fibers and 80 to 40 wt.% pulp fibers, the synthetic fibers having been heat-bonded to one another and/or the synthetic fibers and the pulp fibers having been heat-bonded to one another, and having a basis weight of 8 to 240 g/m<2>. The front and back surface layers and the core layer part as a whole also have been united by the heat bonding of the synthetic fibers to one another. The ratio of the fabric strength in the lengthwise direction to that in the cross direction is from 0.8 to 1.2 in each of a dry state and a wet state. The ratio of the fabric strength in a dry state to that in a wet state is from 0.6 to 1.1. The fabric further has a water absorption of 8 to 20 g/g and a total basis weight of 20 to 250 g/m<2>. The dry-process nonwoven pulp fabric obtained is free from fiber shedding, satisfactorily absorbs water, and has a high wet strength. It is hence suitable for use as a wiper, kitchen sheet, etc. which are used in a wet state.