METHOD OF PRODUCTION OF PAPER SHEET DECOMPOSABLE IN WATER, USE OF SUCH PAPER SHEET FOR MANUFACTURING CORE WHICH IS SUPPORTING ELEMENT FOR ROLL, PAPER SHEET DECOMPOSABLE IN WATER AND CORE MADE FROM SUCH PAPER SHEET Russian patent published in 2014 - IPC B31C3/00 B32B1/08 D21H27/32 

FIELD: textiles, paper.

SUBSTANCE: proposed invention relates to a method of production of a paper sheet decomposable in water. The method comprises the following stages: providing the presence of at least one tape of a water-soluble binder in the form of a dry film, providing the presence of at least two tapes, each of which is formed from at least one layer of cellulose fibres, placing the said tape of water-soluble binder between the said two tapes of cellulose fibres, moistening, connection and compression of the said three tapes, drying the composite tape thus obtained. The sheet thus obtained may be used for manufacturing the core which is a support element for the roll, for which one or more tapes made from the said sheet are wound along a helical line on the cylindrical mould-core.

EFFECT: proposed invention provides creation of the sheet of paper that can quickly decompose in water.

10 cl, 5 dwg