blown film

The importance of recycling your plastics at home cannot be overstated. If we are to stop the massive polluting of our environment, in particular, our oceans and our waterways, with plastic trash, it will take a worldwide effort. And it doesn’t take all that much effort: daily consistency is the key.

KW Plastics has been a plastic recycling company since 1981. We saw the buildup of plastics in our local landfill in Troy, Alabama, and we had to do something about it. Now, we are the world’s largest plastics recycler, and we have no intentions of slowing down. We buy scrap plastic, which is basically the small unused plastic parts that are discarded in the recycled plastic material manufacturing process. We then take that scrap plastic recycling and turn them into plastic resin pellets, which we then sell to recycled plastic manufacturers for use in their new plastic creations. We thus are able to keep plastic out of landfills and keep the total production of new plastic down. In this blog post, we’ll take a look at blown film, which is the process that produces most of our plastic grocery bags in this country. Contact us today for a quote on your scrap plastic!


Blown film is basically the process using blow molding that produces film. More specifically:

  1. Plastic (usually plastic pellets) are superheated to their melting point.
  2. The plastic is then extruded to a cylindrical die, which then forms a thin-walled bubble.
  3. Air pushes the bubble up and the plastic begins to cool.
  4. Once it has cooled, the plastic collapses over a flattened tube, which is then put through rollers and spun like thread is onto a spool.
  5. The plastic is now in thin sheets that are ready for cutting into their final product form.


This is the most popular way to make shopping bags, trash bags, cling wrap, food packaging, or any other product that requires thin plastic. Blown film makes a great uniform plastic that is easy to manipulate into its final form. Other places where you will find blown film include:

  • Food industry packaging
  • Laminating film
  • Barrier film
  • Films for packaging medical products
  • Agricultural films, which include greenhouse film and silage film

Blown film is used in many processes, and we see it every day. It’s really quite amazing when you think that the same raw materials that make paper-thin plastic blown film are the same that make automotive fenders and bumpers, your plastic drinking bottle and milk jug, and your cell phone case. Furthermore, they all use the same basic processes, just a difference in the end technique. It is truly remarkable the versatility of plastic.


KW Plastics began because we wanted to help our planet rid itself all of the plastic creations that we made that were getting into the natural environment. Every day, animals die because they get stuck in plastic or they ingest plastic. We knew we had to start somewhere. From making plastic sheets to now we make TruSnap, a paint can made from 100% recycled plastic, KW Plastics is proud of what we’ve accomplished. We were the first end-to-end plastic recycling plant in the plastics recycling industry.

That being said, KW Plastics does not rest on our laurels. We are constantly striving, innovating, and expanding our recycling capacity so we can handle more scrap plastic and turn more into plastic resin pellets for plastic use. We are passionate about helping our planet by reusing non-native materials in smart ways. Contact us if you have scrap plastic to sell or need recycled resin pellets today!