STOCKBR IDGE P L A S T I C S

MAIN TYPES OF THERMO-RESINS ASSOCIATED WITH

INDUSTRIAL PLASTIC RECYCLING

UNDERSTANDING RESINS

Plastic resins are created through a “cracking process”. This process entails heating the hydrocarbons to break them down into larger molecules. These larger molecules make compounds that form chains known as polymers. Different types of polymers are combined to make the plastic resin pellets which are then used for a number of different applications.

POLYETHYLENE RESIN

Abbreviation: PE

Frequency of usage: Common

Primary usage: Packaging, plastic bags, geomembranes, bottles.

Softening point: 176°F

Mechanical properties: rates low for hardness, strength, rigidity, and friction.

POLYPROPYLENE RESIN

Abbreviation: PP

Frequency of usage: Common

Primary usage: Packaging, labelling, stationary, and textiles

Softening point: 340°F

Mechanical properties: Has the lowest density of commodity plastics, typically tough and flexible, and economical.

POLYSTYRENE RESIN

Abbreviation: PS

Frequency of usage: Common

Primary usage: Packaging peanuts, discs, containers, trays, tumblers, and disposable utensils

Softening point: 464°F

Mechanical properties: is slow to biodegrade, poor oxygen barrier, hard, and brittle.

PS

STYRENE-ACRYLONITRILE RESIN

Abbreviation: SAN

Frequency of usage: Common replacement for PS

Primary usage: Food containers, kitchenware, battery cases, and plastic optical fibers.

Softening point: 220°F

Mechanical properties: Typically transparent, brittle, and easily resistant to boiling water.

SAN

ETHYLENE VINYL ACETATE

Abbreviation: EVA

Frequency of usage: Average

Primary usage: There are 3 different types of EVA that all have distinct uses. EVA can be used for film, hot adhesives, cleats, and organic solvents.

Softening point: 110°F

Mechanical properties: Has a varying density, typically tough, and flexible.

EVA

ABOUT STOCKBRIDGE PLASTICS

Stockbridge Plastics specializes in providing industrial-grade green solutions for plastic recycling and grinding.

We recycle of all the plastics listed and do so in a responsible and sustainable manner. All of our wholesale plastics and

recycled plastics are contamination free.