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PET, short for Polyethylene Terephthalate, is a polyester compound similar to clothing fabric. It is heated and molded into plastic bottles to package consumer products, foods, and beverages. You can distinguish a PET  bottle by the triangle symbol with a “1” molded inside.

PET is strong, chemically stable, shatter-resistant & economical

  • With the advantage of being both strong and light-weight, PET is the material of choice for both packaging producers and end-users alike.
  • PET is an incredibly versatile material with countless packaging applications, from household cleaners and mouthwash to carbonated beverages and peanut butter jars.

PET is eco-conscious and sustainable

  • It can be reused and recycled back into plastic containers, or into other materials such as carpets, clothing fibers, construction materials, and so on. PET recycling programs are available in every municipal region in North America.
  • It is lightweight, which results in less material used to produce the bottle, and less fuel required to transport the bottles to our customers.

PET is recognized worldwide for its safety by health authorities. It does not contain:

  • BPA (Bisphenol-A), a chemical found in other plastics that can cause adverse health effects.
  •  Phthalates (phthalate ester plasticizers). Chemically, PET is a very different molecule from phthalates.
  •  Any hormonal (endocrine) disruptors. There is no reputable scientific data that links PET to estrogen or hormonal modulating activity.

PET additives form a barrier against temperature, UV light & oxygen

  • This increases your product’s shelf life and protects it from breaking down from environmental factors.
  • Monarch has the capability to produce PET bottles with barrier additives to ensure that your product stays fresh and that your packaging looks great in the market.


HDPE, short for High Density Polyethylene (HDPE) , is a thermoplastic polymer made from petroleum, resulting in an opaque container. We extrude & inject the plastic into bottles & containers such as milk jugs, laundry detergent jugs, automotive oil bottles, pill packers, and well as into containers for institutional applications. HDPE is the most versatile plastic resin used in container manufacturing.

HDPE is resistant to many chemicals

  • There is no reaction between the material going into the bottle and the bottle itself.
  • Very stable for medicines and food products, as it avoids spoilage. 
  • The best solution for harsh chemicals, such as bleach and acids.

HDPE is very durable, it doesn’t crack or break

  • HDPE keeps the packaging’s integrity intact
  • It has high impact resistance, and is also resistant to environmental conditions such as mold.
  • HDPE is commonly used for strict UN packaging specifications.

HDPE is eco-conscious & sustainable because

  • It is highly recyclable – being a material that’s commonly used in the packaging industry, the infrastructure exists to recycle it.
  • It can be re-used 100%, without waste.

HDPE is versatile

  • HDPE is available in different grades of resins to match your specific purpose & product application.
    • Example of blow mold grade HDPE containers: shampoo bottles.
    • Example of injection grade HDPE containers: vitamin/pill packers.


PP, short for Polypropylene, is a thermoplastic used in a wide variety of industries and applications.

PP fills in the gaps

  • Used for applications that PET & HDPE can’t serve on their own, it is perfect for containers whose needs don’t fit strictly into PET & HDPE.

PP can be made fully translucent

  • PP allows visibility into the container, whereas HDPE doesn’t. Full translucence is traditionally necessary for some containers, for example, in syrup bottles.

PP is stronger, stiffer & has higher temperature resistance than PET

  • Used for applications that PET & HDPE can’t serve on their own, it is perfect for containers whose needs don’t fit strictly into PET & HDPE.
  • Unlike bottles or containers made of PET & HDPE, PP containers can be boiled, cleaned in the dishwasher, and filled with warm liquids.

The surface can be printed

  • Because many printing processes need the bottle or container to be able to withstand heat, PP can be used for a variety of printing techniques including high-heat printing, such as screen printing.
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