Blown Film Coextrusion Die: 3-5 Layer Components

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Blown film coextrusion dies typically consist of multiple layers, with designs varying widely based on application needs. Key components include the die itself, which is responsible for shaping the film, and an air supply system crucial for the blowing process. Factories utilize large compressed air facilities that include compressors, dryers, and filters to ensure the air meets necessary quality standards. The quality of air supplied is essential for achieving optimal film characteristics. Understanding these components is vital for effective blown film production.
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what are the components of blown film coextrusion die (three to five layers)
 
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I'm not an expert by any means on the topic. However, from reading up on it, there appear to be many designs of dies used in the coextrusion process. I couldn't find a reference to 3 common components. I did find the attached in D.V. Rosato's "Extruding Plastics-A Practical Processing Handbook".
 
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air supply to coextrusion die

thanks a lot FredGarvin

what are means of supplying air to these dies for blowing films
 
What exactly do you mean by "what means?" Factories will have large compressed air facilities. The facilities will comprise of compressors, dryers and filtering that will provide the air required in terms of flow and quality, i.e. oil/water content.
 

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