Waterborne adhesives for reduced basis weight multilayer substrates and use thereof

An article comprising a first substrate, a second substrate, and an adhesive interposed between the two substrates comprising:

• (a) an emulsion-based polymer selected from the group consisting of vinyl acetate ethylene dispersion, polyvinyl acetate, polyvinyl acetate polyvinyl alcohol, dextrin stabilized polyvinyl acetate, polyvinyl acetate copolymers, vinyl acetate-ethylene copolymers, styrene butyl rubber, polyurethane and mixtures thereof;
• (b) about a plurality of microspheres, wherein the microspheres have a volume of about 10 to about 40 V/V % in the adhesive;
• and
• (c) optionally, water, plasticizer, preservative;
• wherein the article has a substantially similar thermal insulation loss with about 26% decrease in substrate basis weight than an article without any microspheres;
• and
• wherein the article is a cup, food container, case, carton, bag, box, envelope, wrap or clamshell.