Method for producing water-disintegrable paper
OwnerKikuo Yamadainventor
Life of this patent
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Abstract
A method of producing water-disintegrable paper, including: using a base-paper supplied with no water to emboss the base-paper sheet in a non-wet state to form a bulking unit, made up of a plurality of uneven elements, on the base-paper sheet; supplying the water-soluble binder to the base-paper sheet from outside of a face of the base-paper sheet after the embossing process to impregnate the water-soluble binder into the base-paper sheet; drying the base-paper sheet after the binder impregnation process; folding the base-paper sheet after the drying process; and supplying an aqueous chemical and/or a crosslinker to the base-paper sheet before or after the folding process to impregnate the aqueous chemical into the base-paper sheet.
Claims4
A method of producing water-disintegrable paper, comprising the steps of:
- an embossing process of using a base-paper supplied with no water to emboss the base-paper sheet in a non-wet state before a water-soluble binder is impregnated in order to form a bulking unit, made up of a plurality of uneven elements, on the base-paper sheet;
- a binder impregnation process of supplying the water-soluble binder to the base-paper sheet from outside of a face of the base-paper sheet after the embossing process to impregnate the water-soluble binder into the base-paper sheet;
- a drying process of drying the base-paper sheet after the binder impregnation process;
- a folding process of folding the base-paper sheet after the drying process;
- and
- an aqueous-chemical impregnation process of supplying an aqueous chemical to the base-paper sheet after the folding process to impregnate the aqueous chemical into the base-paper sheet.
Dependencies are inferred from the claim text.