Eco Promotional Products and Wheat Straw
25 September 2023
What is wheat straw plastic?
When looking at eco promotional merchandise, you will see items made from wheat straw or wheat straw plastic, a bio-based alternative to traditional plastics. So, what is wheat straw plastic, how is it made, and where it is used to promote a greener and more sustainable future?
What is Wheat Straw Plastic?
Wheat straw plastic, also known as wheat plastic or simply wheat straw, is a bioplastic made from the stalks of wheat plants. Wheat straw is the leftover agricultural residue after wheat grains are harvested. Traditionally, this straw has little to no economic value and is often burned or discarded. However, by processing wheat straw into a usable bioplastic, we can reduce waste and dependence on petroleum-based plastics.
How is Wheat Straw Plastic Made?
The production of wheat straw plastic involves several steps:
Harvesting: Wheat is grown for its grains, and the leftover stalks, or straw, are collected after the grain harvest.
Processing: The collected wheat straw is cleaned, chopped into smaller pieces, and then ground into a fine powder.
Polymerization: The wheat straw powder is combined with a biopolymer, often a form of polylactic acid (PLA) derived from corn or sugarcane. This mixture is then heated and processed to create a malleable material.
Moulding: The resulting wheat straw plastic can be moulded into various shapes and products using traditional plastic manufacturing techniques.
Where is Wheat Straw Used?
Wheat straw is finding its way into a wide range of products and applications due to its eco-friendly nature. Here are some common uses:
Food Packaging: Wheat straw is used to make food containers, takeaway boxes, and cutlery. It is a safe and non-toxic option for packaging and is often used for its biodegradability.
Disposable Tableware: Plates, bowls, and utensils made from wheat straw are a sustainable alternative to single-use plastic tableware.
Stationery: Wheat straw can be used to make eco-friendly pens, pencils, and notebooks.
Home Goods: Manufacturers are increasingly using wheat straw to make household items such as storage containers, toothbrushes, and cutting boards.
Benefits of Wheat Straw:
Biodegradability: Wheat straw is biodegradable, which means it breaks down naturally in the environment, reducing long-term plastic pollution.
Renewable Resource: Wheat straw is a renewable resource, making it a more sustainable choice compared to petroleum-based plastics.
Reduced Carbon Footprint: The production of wheat straw plastic typically results in lower carbon emissions compared to traditional plastics, especially when combined with biopolymers like PLA.
Waste Reduction: By using wheat straw as a raw material, we can repurpose agricultural waste, reducing the environmental impact of farming.
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SUMMARY: Comparing eco promotional products is difficult because of the range of materials used Carbon footprint is a measure which allows comparison Need to look at CO2 equivalent because of the use of organic solvents in promotional merchandise There is a difference between Cradle to Gate and Cradle to Grave in the measurement, because we never know whether the end user will attempt to recycle products  Pavilion is a specialist in providing branded promotional products, which are sustainable. The most common question we're asked, of course, is what's the most sustainable branded product? And how would you measure that? And that's a difficult question and often comes with hesitations. Why? This blog aims to try and explain eco credentials, particularly for promotional merchandise and how you might compare them. The first problem you have, is that you're comparing different materials. This is why it's difficult is because there's no true standard of sustainability. There is no international marking that says, this one's a 10, and this one's a 1. The nearest you have is carbon footprint. Carbon footprint generally means the amount of carbon dioxide measured in kilos, but you have to be a bit careful with that, particularly for promotional merchandise because carbon dioxide is not the only greenhouse gas. You may be fully aware that methane, natural gas has a global warming effect 50 to 60 times more than CO2. So, you don't need to measure just CO2, you've really have to look at a CO2 equivalent. In other words, converting the methane. And why do I mention that? Promotional merchandise is often printed and unless you are using water based inks, there will be solvents, and therefore, CO2 equivalent is what you need to measure. The next problem that you've have is what are you measuring the carbon footprint of? Are we talking what's termed - Cradle to Grave or Cradle to Gate? The concept is explained in the diagram.
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