WATER-SOLUBLE FILM WITH IMPROVED SOLUBILITY AND MECHANICAL PROPERTIES AND PACKETS MANUFACTURED FROM IT Russian patent published in 2014 - IPC C11D17/04 C11D3/37 

FIELD: chemistry.

SUBSTANCE: described is a bag, which contains, at least, one hermetically fastened compartment, containing the first composition, with, at least, one wall of, at least, one hermetically fastened compartment being manufactured from a water-soluble film of any acceptable thickness, with the film containing, at least, 50 wt % of water-soluble resin of polyvinyl alcohol (PVA), with the PVA resin having an average viscosity from approximately 13.5 cps to approximately 20 cps and a degree of hydrolysis in the range from approximately 84% to 92%, and the PVA resin contains a mixture of the first and second PVA polymers, with the viscosity of the first PVA polymer being lower than the viscosity of the second PVA polymer. The water-soluble film contains the PVA polymer in such a way that when the film is approximately 76 micron thick, the firm is characterised by the solubility index from approximately 620 to approximately 920 and the tension index from approximately 145 to approximately 626.

EFFECT: good solubility in cold water with aging, water-resistance to an impact of wet hands and mechanical properties.

13 cl, 15 tbl, 3 dwg