HLP Klearfold Unveils PlantBox(R), a More Sustainable Klearfold(R) Plastic Folding Carton Made From Bio-PET NEW YORK, NY--(Marketwired - Jun 30, 2014) - PlantBox® is a new, premium-quality plastic folding carton made from box-grade bio-PET (bio-based polyethylene terephthalate), up to 30% of which...