Frequently asked questions

Frequently asked questions

Table of contents


What are the different types of bags that Polykar makes?

Please see products.

Where can I find your compostable bags? Oxodegradable garbage bags? Regular garbage bags?

By clicking on this link, you will be transferred to our contact page. Please fill out your contact information and we will refer you to one of our distributors nearest you.

What kind of films can I buy from you?

We manufacture u-film, tubing, sheeting, and j-film.

Are your PTO bags for food use or industrial use only?

We manufacture PTO bags for food use (CFIA approved) as well as PTO bags for industrial use (non-CFIA).

I have a lot of plastic scrap that I would like to get rid of. Do you buy any?

Yes! Please contact us and we will respond to you with an offer within 24 hours.

Do you accept printed scrap? Compostable scrap?

Yes! See here.

I would like to get a quote. What is the best way to contact you for this?

For all quotes, please contact us.

How are polyethylene garbage bags made?

Garbage bags are produced using a two-stage process: extrusion and conversion. In extrusion, the resin (in the form of beads) is melted to temperatures exceeding 200 degrees Celsius to a uniform material which is then blown upward (in this stage the molten plastic is referred to as a bubble) in order to be cooled before it is finally flattened and rolled into double-layer film. The gauge of the garbage bags depends on the speed with which the film is blown. In conversion, the film is then heated and sealed into bags.

What is the difference between LDPE, LLDPE, and HDPE?

Polyethylene, one of the world’s most widely used plastics, can be divided into several categories, each with different characteristics and densities. Below is a list of the categories of polyethylene (PE) used by Polykar:

  • LDPE (Low density polyethylene): Polyethylene with a density of 0.91 to 0.94, prepared at very high pressures, and used mainly for sheeting, films, and packaging materials.
  • LLDPE (Linear low density polyethylene): Linear polyethylene with a density of .92, used mainly for plastic bags, sheeting, stretch wrap, and tubing.
  • HDPE (High density polyethylene): Polyethylene with a density of 0.96 or more, produced at low pressure and used chiefly for containers and articles made by injection molding and certain types of bags.

What is a compostable bag? What is the difference between compostable and oxodegradable?

Polykar’s compostable bags, manufactured in partnership with BASF, will biodegrade in a composting facility within a period of 180 days, according to the ASTM-D6400 standards. They are made from ecovio®, a compostable polyester and cornstarch, and do not contain any polyethylene which is not compostable nor biodegradable.

Polykar’s oxodegradable bags are made from polyethylene like regular garbage bags, but also contain an additive from EPI known as TDPA™. When exposed to heat, air, and stress, this additive will render these bags degradable within a period of 24 months. Please note, however, that heat, air, and stress are not present in a landfill, the ultimate destination of garbage bags in Canada.

What is ECOLOGO® Certification?

The ECOLOGO® Certification is a third-party, multi-attribute eco-labeling program approved by the Global Ecolabelling Network, an international association of eco-labeling programs, as meeting the ISO 14024 standard. Originally formed in 1988 by the Canadian Federal Government, ECOLOGO is now one of the most recognizable eco-labels in North America. For more information, visit

What are clear tinted garbage bags? What are the advantages of these bags over clear bags?

Clear tinted garbage bags have the same utility as regular clear bags because they are transparent. The only difference is that the clear tinted bags contain 20% recycled post-consumer content, which is why they are ECOLOGO® Certified.

What are ISO 9001:2008 and ISO 14001:2004?

Polykar is one of the few garbage bag manufacturers in Canada to have obtained both ISO certifications in 2003:

ISO 9001:2008 – This certification provides international standards for quality management, regardless of the company, size, sector, or activity.

ISO 14001:2004 – This standard defines requirements for environmental management systems.

What size garbage bag do I need?

Please click here and enter the dimensions of your garbage can.

How do I calculate the weight of a bag?

Please click here and enter the width, length, and mil of the bag.

What is a mil?

A mil is a thousandth of an inch and is the unit used to express the thickness of a garbage bag. The thickness can sometimes be expressed in microns (one millionth of a meter). One mil is equal to 25.4 microns.

Use the quick conversion tool to assist you.