IQS NEWSROOM

Plastic bags, also called ‘poly bags,’ are one of those modern conveniences we take for granted. But 60 years ago, no one ever considered the question, ‘Paper or plastic?’ Back then, people also managed to get by without Ziploc® bags or dry cleaner bags. This was because the technology for creating polyethylene film didn’t emerge until the 1940s during World War II. And the methods to create plastic bags from polyethylene film weren’t developed until the 1950s. The most common way to produce poly bags is by blown film extrusion, also called the ‘tubular film process.’ In a moment, you’ll see how it got this name. Plastic bags are made from polyethylene. During processing, the polyethylene might be treated with any number of additives, such as…