• Plastics 101
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    Plastics 101

     About ePackageSupply

    At, we only provide the best packaging solutions for our customers. That is why we have partnered with Berry Plastics to provide online the best quality products in buckets, containers, cups and lids, sold online exclusively at is a United States Veteran Owned and Operated company based in Evansville, Indiana. Countless hours of hard work and determination, as well as a little luck, have helped us to become one of the internet’s most trusted and successful providers of quality products and exceptional customer service.


    Resin Overview

    At ePackageSupply we only sell products using 4 distinct kinds of resin. The choice of resin is important, as these determine whether the product is recyclable, microwaveable, reusable, freezable, etc. The four resins used in our products include random co-poly polypropylene, impact co-poly polypropylene, high density polyethylene, and linear low density polyethylene.





    Random Co-Poly Polypropylene (PP) – This resin is a common plastic injection that usually is used for clarified plastic containers. Co-Poly Polypropylene is represented by the number 5 and the symbol PP. See below for key characteristics:


    • Comes in clarified 
    • Brittle, NOT crack resistant 
    • These are NOT freezer safe 
    • These are microwavable safe (reheat only)






    Impact Co-Poly Polypropylene (PP) – This resin is an extremely versatile material. It is durable, yet flexible. It is also represented by the number 5 and PP. The key differences between random PP and impact PP is that the latter is smokier color known as “translucent” or white, and is more durable, but less flexible than random PP. See below:

    • Comes in translucent or white (milk / cloudy clear)

    • Can be used in normal and frozen environment, but NOT blast freezing

    • Great impact and crack resistant

    • Microwavable safe (reheat only)





    High Density Polyethylene (HDPE) – This resin is another durable and stiff material. It is great for freezing temperatures, but not for heating. This material is more industrial than that of impact PP. Below is key information regarding HDPE:

    • Comes in translucent or white

    • Again very applicable in normal and freezing temperatures

    • Good with impact and crack resistance

    • Do NOT microwave or hot fill of 160 degrees Fahrenheit

    • Represented by the number 2 and HDPE





    Linear Low density Polyethylene (LLDPE) – More commonly known as the lid resin. This resin is ideal for lids because of its flexible properties, yet sturdy form fitting ability. It can be used to create various styles and thicknesses of lids:

    • Comes in translucent or white

    • Similar to HDPE – applicable in normal and freezing temperatures

    • Not recommended for microwave use

    • Should not fill with liquids higher temps than 160 degrees Fahrenheit

    • Represented by the number 4 and LDPE



    Container Types

    Through ePackageSupply’s partnership with Berry Plastic, we sell a variety of containers.  We have some containers that are rectangular or round and some that come with handles or lids or both. Styles including their round containers, buckets, Qubic™ container, hinged, cups, and jars.




    Standard Round Containers

    Round Buckets



    ePackageSupply’s standard round containers have the most size variations and quantities.  Berry Plastics considers a standard round container as any round plastic container without a handle.  These containers typically are made from an HDPE resin.  Some however are made from a PP resin.  We even sell the containers with lids.


    Need a durable, yet firm plastic pail with plastic handle?  Berry Plastics produces many of the aforementioned containers in a bucket form!  These are also typically mold injected with HDPE resin, but some of the smaller pails are made from PP resin.  Buckets come in similar styles and sizes as the container section.

    Qubic™ Containers

    Cups and Jars



    A unique design, Qubic™ containers are exclusively manufactured by Berry Plastics, and you can find these here at  The 3 main advantages to Qubic™ containers are their easy stackability, maximize shelf space, and serving/pouring friendly.  These are exclusively made with impact co-poly propylene (PP), allowing these to be used in either a freezer setting or heated in a microwavable setting.

    Berry Plastics also manufactures many common plastic cubs and jars that you see at restaurants.  Here on ePackageSupply, we sell a couple different styles and sizes of cups with different combinations of lids.  We sell one PET plastic jar with a threaded lid.  The cups were thermoformed and utilize the random co-poly polypropylene (PP) resin.



    Lid Types

    Most of our products at ePackageSupply can be bought with an accompanied lid. The majority of Berry Plastic lids are made from an LLDPE mold injected resin. These linear low-density polyethylene lids are usually flexible and fit well on various sizes of containers. They are typically freezer grade, but are not microwave friendly. Below are a list of lids that are sold on ePackageSupply:









    Single Seal – HDPE – Injection Molding

    Single Seal, Recessed, Recessed Tamper Resistant – LLDPE – Injection Molding

    Single Seal – LLDPE – Injection Molding


    Single Seal, Double Seal – LLDPE – Injection Molding










    Single Seal – LLDPE – Injection Molding

    Single Seal – LLDPE – Injection Molding

    Gasketed Tear Strip – HDPE – Injection Molding

    Gasketed Tear Strip, Reike Sr Spout – HDPE – Injection Molding



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

    Thermoforming – process of heating a thermoplastic material and shaping it in a mold

    PET – polyethylene terephthalate

    LLDPE – 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, LLDPE, or PP materials.

    BPA Free – BPA stands for bisphenol A and can factor into heart diseases, type 2 diabetes, brain function damages, etc. Certain plastics (HDPE, LLDPE, PP, PET, etc.) do not have BPA in them.

    Freezer Grade – Plastic materials that can sustain form in freezer temperatures (< -18 degrees Celsius) without cracking or becoming brittle. This does necessarily mean they can withstand freezing blasts however.

    Recyclable – waste that can be converted into reusable material.

    Reusable – ability to reuse a product more than once after cleaning.

    Disposable – products that typically are thrown away after one or 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.

    Co-poly – multiple strands of “polyester” strings that typically are known as plastic.

    Difference between Translucent and 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.