Hello everyone,
Recently we produced film using PLA polymer. During extrusion ( blown film ) we noticed that we had wrinkles ( especially at the edges of the film ) when we started the rotation, and when we stopped it the film it became normal again. How can we avoid wrinkled edges of the film? Are there any modifications we can do? it will help if we put one more ring over the air ring?
Thanks in advance
Recently we produced film using PLA polymer. During extrusion ( blown film ) we noticed that we had wrinkles ( especially at the edges of the film ) when we started the rotation, and when we stopped it the film it became normal again. How can we avoid wrinkled edges of the film? Are there any modifications we can do? it will help if we put one more ring over the air ring?
Thanks in advance
