The CASS is an evaluation of the sorting potential of an item based on its dimensions. The guiding principle is that rigid plastic packaging articles that are more three-dimensional (round, cylindrical, square) will sort more efficiently in today’s MRFs than those which are more two-dimensional (flat). The evaluation applies a weighting factor to each dimension length, then assigns the score based on the summation of the adjusted dimensions. Depending on the CASS, an item may be classified as “Preferred”, or it may need to be tested to determine its actual sorting potential. The CASS is intended to be used with the Evaluation of 2D/3D Sorting Potential of Articlestest method which is under development

Optical brighteners are not removed in the recycling process and can create an unacceptable fluorescence for next uses of recycled HDPE. It is difficult to identify material with this negative effect until extremely late in the recycling process where a great deal of added cost has been imparted into a material of low value due to the additive.

When blended with HDPE it negatively affects the impact properties and can render the material brittle.Although very small amounts of PP, such as that contributed by labels, are regularly accepted by HDPE reclaimers, closures and dispensers comprising a larger weight percentage of the package have a greater negative affect.

These materials will contaminate wash water, will contribute to waste disposal costs, or will stick to the valuable HDPE and reduce quality and value of the final products.

This material passes through the float-sink tank along with the HDPE and is difficult to remove with other methods, thereby causing contamination in the final product.Sinking silicone does not experience this issue.

PVC is relatively easy to remove in the float-sink tank since it sinks while the HDPE floats.However, the float-sink tank is imperfect and even a very small amount of PVC with the recycled HDPE renders large amounts of it unusable as the PVC degrades at lower temperatures than those at which HDPE is processed.

When blended with HDPE it negatively affects the impact properties and can render the material brittle.Although very small amounts of PP, such as that contributed by labels, are regularly accepted by HDPE reclaimers, closures and dispensers comprising a larger weight percentage of the package have a greater negative affect.

The HDPE reclamation process involves water and agitation.The paper that detaches from the container when subjected to these conditions becomes pulp, which does not sink intact but remains suspended in the liquid, adding load to the filtering and water treatment systems.Paper remaining adhered to the HDPE travels with the HDPE to the extruder where the material carbonizes and causes color defects. Even after melt filtering, the burned smell and discoloration remain with the recycled HDPE thereby negatively affecting its potential reuse.

If small, not detected, or allowed to pass, these labels, when used with an adhesive that does not release in the wash, either cause the attached HDPE to sink where it is lost in the float-sink tank or pass into the extruder where they can blind melt filters.

PS, when used with an adhesive that does not release in the wash, remains with the HDPE and enters the extruder where it is blended with the HDPE.PS is not compatible with HDPE and may cause splay or reduce PS, when used with an adhesive that does not release in the wash, remains with the HDPE and enters the extruder where it is blended with the HDPE.PS is not compatible with HDPE and may cause splay or reduce impact toughness for the recycled HDPE user.

When used with an adhesive that releases in the wash, these labels sink in the float-sink tank where they are removed. But because the float-sink tank is imperfect, and even a very small amount of PVC entering the extruder causes severe quality and yield problems, this material is detrimental.

The HDPE reclamation process involves a wash step that removes adhesives and other components.This process renders paper into a pulp which is very difficult to filter from the liquid, adding significant load to the filtering and water treatment systems.Some of the small individual paper fibers will remain with the HDPE and carbonize when the material is extruded, causing unacceptable quality degradation.

PVC sinks in the float sink tank where the majority of it is removed from the HDPE.Because the float sink tank is imperfect and even a very small amount of PVC entering the extruder causes sever quality and yield problems, this material is detrimental. PVC degrades at HDPE extrusion temperatures and renders large amounts of the recycled HDPE unusable.

When blended with HDPE it negatively affects stiffness and impact properties.Although very small amounts of PE, such as that contributed by labels, are regularly accepted by HDPE reclaimers, some attachments comprise a larger weight percentage of the package and therefore a greater negative affect.

The use of RFID’s is discouraged as may limit HDPE yield, introduce potential contamination, and increase separation and waste disposal costs.

SimpleCycle™ TPE valves with proper closures for PET, HDPE, and PP bottles

CirKular+™ C2000 and CirKular+™ C3000 performance enhancing additives for HDPE bottles at up to and including 5% loading

Beauty Star 3% and less EVOH decorated HDPE tube and HDPE closure
Eco Vision direct printed PE tube with 5% and less EVOH and HDPE closure
Kim Pai Go Green HD-PBL 220/11 HDPE/LLDPE laminated non-metallized tube, direct decorated with UV flexo inks and gloss varnish on white HDPE and with 3.7% or less ethylene vinyl alcohol barrier layer and tie layer and with an HDPE shoulder and a PET shoulder insert and without closure
Kim Pai Go Green HD-PBL EV15-350 HDPE/LLDPE extruded non-metallized tube, direct decorated with UV dry-offset inks and gloss varnish on white HDPE and with 3.4% or less ethylene vinyl alcohol barrier layer and tie layer and with an HDPE shoulder and without closure
Greenleaf Generation 2
Samson Tube
Samson Tube
HDPE bottle with EVOH barrier layer and tie layer
Kim Pai Go Green 300, 350, and 380 HDPE non-metallized and decorated tubes with 3.9% or less EVOH barrier layer and an HDPE shoulder and PP closure and also Kim Pai Go Green 250 HDPE metallized and decorated tube with 4.4% or less EVOH barrier layer and an HDPE shoulder, with and without a PET shoulder insert, and PP closure
Kim Pai Go Green 250 HDPE white sleeve and transparent sleeve direct decorated tube with 5% or less ethylene vinyl alcohol barrier layer and tie layer and with and without a PET shoulder insert
HDPE and LLDPE, 7.6% or less ethylene vinyl alcohol barrier layer and tie layer, direct printed
TUPACK Decorated HDPE blend tube, without and with less than 5% ethylene vinyl alcohol co-extruded barrier layer and maleated polyolefin tie layer, and low-melt flow index HDPE shoulder and HDPE closure
Platina 2515 HDPE tubes with 5% or less EVOH barrier addition, without closure, and with UV-cured printed decoration
Platina 250 HDPE tubes with 5% or less barrier addition decorated with UV-cured printing and with an HDPE closure for Platina tubes
Platina PRO 220 series and Platina PRO 250 series
Platina 400 and GML 300 HDPE tubes
Platina 250 and Green GML 300 HDPE tubes

Huhtamaki blueloop® tube HD 220 laminate tube with HDPE shoulder and cap (tube by Zalesi)
Polyfoil® MMB Tubes with and without thin film metallization
Albea’s printed extruded HDPE tube with low melt flow HDPE flip-top cap
Greenleaf Gen2 tubes with 5.5% EVOH barrier addition, low melt 1661 shoulder, without closure, and decorated with UV-cured printing
San Ying Packaging's Ever Green 01 decorated HDPE tube with less than 1% vinyl alcohol-based coating barrier layer, no closure
REGO ECO ERA MONO PBL undecorated HDPE Industrial Co., Ltd. tube with less than 5% vinyl alcohol-based barrier layer
High gloss HDPE container with 20% cyclic olefin copolymer (TOPAS® 8007F-600 COC) outer-layer
Enkase™ fluorination coating
FluoroSeal® fluorination coating
HDPE bottle with 10% or less clear ethylene/propylene thermoplastic polyolefin outer layer

CleanFlake™ Technology that enables recycling for General Purpose & Beverage applications on PET & HDPE
Eco Vision monolayered PE tube and a decorated PE pressure sensitive label with acrylic adhesive and HDPE closure
GreenCycle™ 1.85 mil clear top-coated BOPP pressure sensitive label substrate; 2.6 mil cavitated white top-coated BOPP pressure sensitive label substrate; 2.3 mil solid core white top-coated BOPP pressure sensitive label substrate; and 2.4 mil cavitated white top-coated BOPP pressure sensitive label substrate, all with 102 acrylic emulsion adhesive, for HDPE bottles
Undecorated optiFLEX® ecoFOCUS™ clear and white polyethylene pressure sensitive labels with V-127RE emulsion acrylic adhesive for HDPE bottles
Undecorated PE and PP pressure sensitive labels with general purpose acrylic adhesive for HDPE bottles
Undecorated clear and white PE substrate, clear and white PE/PP polyolefin blend substrate, and white BOPP substrate pressure sensitive labels with general purpose permanent acrylic adhesive for HDPE bottles
BOPP Film with Pressure Sensitive Acrylic Emulsion Adhesive for HDPE bottles, unprinted
Polypropylene labels: gravure printed, wax coated substrate, heat transfer label; flexo printed, wax coated substrate, heat transfer label; gravure printed white in-mold label with EVA adhesive; flexo printed, clear pressure sensitive label with 10126 or 13733 acrylic adhesive; and flexo printed, white pressure sensitive label with 104495 acrylic adhesive plus a gravure printed, polyolefin shrink film label

YUPO® white polyolefin in-mold-label (IML) unprinted/undecorated substrates for HDPE bottles

American Fuji Seal’s Alpha PO shrink film (FVX2-05) and solvent based ink system for shrink sleeve labels on HDPE bottles
Taghleef Industries’ undecorated Shape360® TDS shrink sleeve film substrate for HDPE bottles
YMR PETG or YBRS hybrid films (PETG/OPS co-extruded and bi-axially oriented) shrink sleeve substrates for HDPE bottles

Samson Tube
Samson Tube
Two color Direct Object Printing™ technology with 0.6% and less surface coverage on a pigmented copolymer high density polyethylene bottle
Four color (white, cyan, magenta, yellow, and black) Direct Object Printing™ technology with up to and including 70% surface coverage on a pigmented high density polyethylene copolymer bottle

BOPP Film with Pressure Sensitive Acrylic Emulsion Adhesive for HDPE bottles, unprinted
Polypropylene labels: gravure printed, wax coated substrate, heat transfer label; flexo printed, wax coated substrate, heat transfer label; gravure printed white in-mold label with EVA adhesive; flexo printed, clear pressure sensitive label with 10126 or 13733 acrylic adhesive; and flexo printed, white pressure sensitive label with 104495 acrylic adhesive plus a gravure printed, polyolefin shrink film label

Meets Preferred Guidance (MPG)
Aptar’s Future all-PE pump for HDPE and PET bottles
APackaging Group’s Infinity Pump Series™ all-polyolefin lotion pumps for HDPE and PET bottles

Critical Guidance Recognition (CGR)
Aptar’s Future all-PE pump for HDPE and PET bottles