Plastics 101

Resin Overview

ePackageSupply offers high quality products that utilize four distinct types of resin. Resin, in short, is the base of all plastic. The choice of resin is important as it determines whether the end product is recyclable, microwaveable, reusable, freezable, and so on. The four resins used in our products are: Random Polypropylene, Impact Polypropylene, High Density Polyethylene, and Linear Low Density Polyethylene. Below are details about each resin type.

Random Polypropylene (PP)

This resin is a common plastic injection that is typically used for clarified plastic containers. Polypropylene is represented by the number 5 and the symbol PP.

Key Characteristics:

  • Available in clarified (clear)

  • Brittle, NOT crack resistant

  • NOT freezer safe

  • Microwave safe (reheat only)

Impact Polypropylene (PP)

Impact Polypropylene (PP) is an extremely versatile material. It is durable, yet flexible. It is also represented by the number 5 and PP. It is available in a smoky transluscent color and white.

Key Characteristics:

  • Available in translucent and white

  • Can be used for freezing, but NOT blast freezing

  • Very impact and crack resistant

  • Microwave safe (reheat only)

High Density Polyethylene (HDPE)

HDPE is a durable and stiff resin. It is great for freezing, but not for heating. It is commonly used in industrial settings and is represented by the number 2 and HDPE.

Key Characteristics:

  • Available in translucent or white

  • Great for freezing, not for heating

  • Good for impact and crack resistance

  • Do NOT microwave or fill w/ subtance over 160° F

Linear Low Density Polyethylene (LDPE)

More commonly known as “the lid resin”. Linear Low Density Polyethylene is ideal for lids because of its flexibility and sturdiness. It can be used to create various styles of lids. Represented by 4 and LDPE.

Key Characteristics:

  • Available in translucent and white

  • Great for freezing, not for heating

  • Not recommended for microwave use

  • NOT applicable for substances over 160° F

Container Types

ePackageSupply proudly offers an ever expanding variety of high quality Berry Global containers. We stock everything from the standard white bucket, to the unique square Qubic containers, and everything in between. Below is an overview of our core container types.

Standard Round Containers

A standard round container is defined as any round plastic container without a handle. Such containers are typically made using a HDPE or a PP resin. These containers offer the most size variations and quantity options. Many are available with matching lids.

Round Buckets

Available in many different styles and sizes, round buckets are essentially standard round containers with the addition of a handle. They are typically mold injected using HDPE resin; however, some smaller sizes are made using a PP resin.

QubicTM Containers

QubicTM containers are a unique style of container developed and exclusively manufactured by Berry Global. They are, as the name implies, a cube shape that allows for easy stacking, maximized shelf space, and simple serving/pouring. Made using Impact Propylene (PP), they are both freezer and microwave safe.


We offer many different styles and sizes of cups with a variety of lid combinations. These are the same cups you often see at restaurants, convenience stores, and arenas. Our cups are thermoformed with the Random Polypropylene (PP) resin.

Lid Types

A majority of ePackageSupply products can be purchased with accompanying lids. Our lids are commonly made using a Linear Low-Density Polyethylene (LDPE) mold-injected resin, allowing for flexibility and a snug fit on many different containers. They are freezer grade, but are NOT microwave friendly. Below you will find a breakdown of our various lid types.


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Key Terms

The world of plastics can be a confusing one. We've compiled many of the important terms to remember below. If you have any questions, feel free to contact our knowledgable customer service team at 1-888-631-0888 or

Resin - the base of all plastics

Injection Molding - shaping of plastic articles by injecting heated material into a mold

Thermoforming - process of heating a thermoplastic mate rial and shaping it in a mold

PET - polyethylene terephthalate

LDPE - linear low density polyethylene

HDPE - high density polyethylene

PP - polypropylene

Food Grade - plastic materials that can come in direct contact with food we consume via the harvesting, processing, or packaging of food. Typical food grade containers are made from either HDPE, LDPE, or PP materials.

BPA Free - BPA stands for bisphenol A and can factor into heart disease, type 2 diabetes, brain damage, etc. Certain plastics (HDPE, LDPE, PP, PET, etc.) do not have BPA in them.

Freezer Grade - Plastic materials that can sustain form in freezer temperatures (< -64° F) without cracking or becoming brittle. This does not necessarily mean they can withstand freezing blasts however.

Recyclable - waste that can be converted into reusable material.

Reusable - the ability to reuse a product more than once after proper cleaning

Disposable - products that typically are thrown away after one or a few uses

Sustainable - material that can be maintained at a certain level of functionality for a certain amount of time.

Biodegradable - capable of being decomposed by bacteria or other living organisms.

Translucent / Clarified - translucent has a milky / smoky color, while clarified is more clear and easier to see through.

Single Seal Lid - standard one-sided closing ability - typically the lid attaches to the outside of container only

Double Seal Lid - two-sided closing ability - lid attaches to container and container attaches to lid both on outside container

Recessed Lid - single seal where lid attaches to container on the inside of the container

Tamper Resistant Lid - recessed lid where there is a strip that must be broken in order to open the container

Gasketed Tear Strip - removable strip that attaches a lid to its container, with a gasket for packaging liquids

Reike Sr Spout - a flexible plastic spout that can be retracted from the lid and makes pouring liquids and fine grains easier