Foopak Hardsize Board is engineered under special base board to sustain storage in lower temperatures and have very low moisture absorption. For much higher requirement for packaged food sealability, Foopak Heatsealable Board is designed with low Moisture Vapor Transmittance Rate (MVTR) to protect the freshness of the food inside the packaging. This results the board not to be easily penetrated by air and moisture particles that travels through the pores of the board. As a comparison to the regular paperboard, Foopak Heatsealable Board has MVTR at around 150 g/m2/day where as regular folding box board has minimum 1,500 g/m2/day.