This site was created to give a plain and honest answer to the question “How are plastic bags made?”. It explains step by step the path from granule to film, and from film to a printed and cut bag; it brings bag types, raw materials and terms often heard in the industry together in one place.
We think of our readers as businesses that buy bags, packaging managers, students and anyone who is simply curious. Our aim is not to sell a product but to help make the language used when talking about bags easier to understand.
Our relationship with Hopan
plastikposeturetimi.com is a Hopan information project. Hopan is a company engaged in the sale and marketing of polyethylene and other plastic raw materials for the plastics and packaging industry. Hopan is not a bag manufacturer; the production processes described on this site are intended to introduce general practice in the industry.
On this site we mention Hopan only as a point of contact for raw-material questions. For questions about polyethylene raw material, there is a link to Hopan at the end of the pages.
Our content principles
- Plain language: When we use technical terms, we also give their meaning; the glossary section was prepared for this purpose.
- Measured numbers: A numerical technical value is given only if it appears in a source we have read, and then as a range together with its source. Where we are not sure, we prefer a qualitative description.
- No claims: We make no claims of production, capacity, certification or environmental superiority on behalf of any company.
- Respect for legislation: We do not give definitive rulings on subjects such as food contact, health and the environment; we remind readers that these subjects need to be assessed according to the application and the relevant legislation.
If you notice an error or omission, reporting it through the channel on the Contact page helps make the content more accurate.
Sources
We read the sources below while preparing the content. Their content was summarised in our own words; numerical values were used only where they appeared in these sources, and as ranges.