WATER-SOLUBLE FILM FOR PACKAGING LIQUID DETERGENT, AND LIQUID DETERGENT PACKAGE
A water-soluble film for packaging a liquid detergent containing a polyalcohol (Y) comprises a polyvinyl alcohol resin (A) and a polyalcohol (X), wherein the proportion x (wt. %) of the polyalcohol (X) with respect to the polyvinyl alcohol resin (A) and the proportion y (wt. %) of the polyalcohol (Y) contained in the liquid detergent satisfy the following expression: x>y The water-soluble film can be formed into an excellent package which is free from deterioration in the tension of the water-soluble film over time even with the liquid detergent packaged therein.
1 . A water-soluble film for packaging a liquid detergent containing a polyalcohol (Y), the water-soluble film comprising:
a polyvinyl alcohol resin (A); and
a polyalcohol (X);
wherein a proportion x (wt. %) of the polyalcohol (X) with respect to the polyvinyl alcohol resin (A) and a proportion y (wt. %) of the polyalcohol (Y) contained in the liquid detergent satisfy the following expression (1):
x>y (1).
2 . The water-soluble film for packaging the liquid detergent according to claim 1 , wherein the proportions x and y satisfy the following expression (2):
x−y≥ 5 (2).
3 . The water-soluble film for packaging the liquid detergent according to claim 1 , wherein the proportion x of the polyalcohol (X) with respect to the polyvinyl alcohol resin (A) is not less than 25 wt. %.
4 . The water-soluble film for packaging the liquid detergent according to claim 1 , wherein the proportion y of the polyalcohol (Y) contained in the liquid detergent is 5 to 50 wt. %.
5 . The water-soluble film for packaging the liquid detergent according to claim 1 , wherein the polyvinyl alcohol resin (A) includes an anionic group-modified polyvinyl alcohol resin.
6 . The water-soluble film for packaging the liquid detergent according to claim 1 , which has a water content of 3 to 15 wt. %.
7 . A liquid detergent package comprising:
a package bag formed from the liquid detergent-packaging water-soluble film according to claim 1 ; and
a liquid detergent containing a polyalcohol (Y) and packaged in the package bag.
8 . The liquid detergent package according to claim 7 ,
wherein the liquid detergent has a pH of 6 to 12 when dissolved or dispersed in water,
wherein the liquid detergent has a water content of not higher than 15 wt. %.