HLP Klearfold offers two, more sustainable alternatives to traditional plastic folding cartons. Klearfold PlantBox (TM) cartons are made from box-grade bio-PET, up to 30% of which is derived from renewable, plant-based sources. Bio-PET possesses all same properties and characteristics as petroleum-derived PET, and PlantBox cartons have the same the appearance, quality and performance as our renowned Klearfold® PET cartons. In addition HLP Klearfold also offers Klearfold cartons made from RPET (recycled content PET), made with 30% postconsumer recycled content. Both PlantBox and Klearfold RPET cartons are made using HLP Klearfold's proprietary Soft Crease® scoring technology for optimum hand or machine-fill performance.