Reduced plasticizer-containing polyvinyl alcohol having (n) a plasticizer-containing layer and an aldehyde polyvinyl (iso) aldehyde layer film laminate of high strength

The present invention relates to polyvinyl (n) a plasticizer-containing layer and an aldehyde polyvinyl (iso) aldehyde plasticizer-containing layer having a high strength film laminate. In particular, the present invention relates to a film laminate formed from at least three layers A, B and C, each comprising at least one plasticizer and at least one polyvinyl acetal in which polyvinyl acetal, layer a, B, or C comprise at least one of the at least one less than the average degree of polymerization of 3000 having 10 to 25 wt% polyvinyl alcohol and the ratio of groups 50 to 80 wt% polyvinyl (iso) aldehyde ratio of poly vinyl alcohol reduction (iso) aldehyde, and wherein the layer B has a ratio of less than 32% by weight of a plasticizer. The film laminate may be used in manufacturing a glass automotive, aircraft, ships, architectural glazing facade member / film laminate / glass composite, or for the manufacture of photovoltaic module.