Composting our Products
Compostable Materials

Composting our Products

WorldCentric® products are designed to be composted at commercial composting facilities. These facilities grind the material, turn the compost piles, and monitor conditions to create high temperatures. This reduces the amount of time it takes for products to break down and reduces methane emissions.

Compostable products break down at different rates, depending on the material they are made from and its thickness, as well as the composting conditions. Home composting rates are slower and can vary widely depending on how frequently the pile is turned over, the moisture and material content, and the temperature.

Time Required for Composting World Centric Products

Product

Home Composting

Commercial Composting

Compostable (PLA) cold cups, deli containers, clamshells, straws, etc.

Not recommended

2-3 months

Compostable (PLA) utensils

Not recommended

2-4 months

Compostable (PLA) trash bags and kitchen bags

Up to 1 year

2-3 months

Fiber plates, take-out containers, bowls, cups and trays

Up to 6 months

2-3 months

Paper hot cups and bowls

Up to 1 year

2-3 months


Composting utensils at home is not recommended because of their thickness and strength. Similarly, compostable plastics made from Ingeo PLA are not certified for home composting.


Standards

There are several international organizations that have established standards and testing methods for compostability:

These standards specify the criteria for biodegradation, disintegration and eco-toxicity for a plastic to be called compostable.

  • Biodegradability is determined by measuring the amount of CO2 produced over a certain time period by the biodegrading plastic. The standards require 60% conversion of carbon into carbon dioxide within 180 days for resins made from single polymer and 90% conversion of carbon into carbon dioxide for co-polymers or polymer mixes.
  • Disintegration is measured by sieving the material to determine the biodegraded size and less than 10% should remain on a 2mm screen within 120 days.
  • Eco toxicity is measured by having concentrations of heavy metals below the limits set by the standards and by testing plant growth by mixing the compost with soil in different concentrations and comparing it with controlled compost.

All of our products are certified compostable by the Biodegradable Products Institute (BPI), which uses the ASTM standards to test that products break down quickly and safely. Our compostable bags are also TÜV AUSTRIA certified.

To learn more about how our certifications demonstrate that our products, visit our certifications page.

 

Written by

World Centric

 

Read time

3 minutes

 

Published on

Feb 28, 2019

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