ROCKLAND, MA -- ITW TACC earned Children & Schools Certification from the GREENGUARD Environmental Institute for its Z Solvent-Free Postformable Adhesive. The product had previously earned GREENGUARD'S indoor air quality certification. GREENGUARD said the Children & Schools program looks beyond traditional VOCs and verifies low-emissions of phthalates and other hazardous materials that can off-gas from some building products and potentially the health of building occupants.