Blown Film Tutorial

摘要

Film fabrication is an important commercial process for plastics. Many of our essential products in our culture use films to package and protect items such as foods and durable goods. The blown film process represents one of the most common commercial technologies used to fabricate polymers into films. The blown film process at first inspection appears to be a relativity simple process which is comparatively easy to operate, but it is in fact a process characterized by it's versatility to produce films suitable for use in widely differing application with specific performance requirements. How are the basic components of the blown film process sized to assure proper operation. What are the critical parameters of the blown film process? How does the selection of process parameters allow similar film properties to be obtained on different blown film lines? What is the interaction of the process and polymer to produce specific performance properties? How do the components of the components of the blown film process work? How are measurements on the process made to assure consistent performance on different lines? What are some troubleshooting guidelines that have been found to be useful for operation of the blown film process? These are some of the questions that this tutorial will address.