*** Please note, each row and course# listed below is a separate, complete course. ***

Blown Film Extrusion

Course# Date Time Location
096-1217 09/19/2024 - 09/20/2024 8:00 AM - 4:00 PM Microsoft Teams
096-1218 04/24/2025 - 04/25/2025 8:00 AM - 4:00 PM Microsoft Teams
096-1219 09/18/2025 - 09/19/2025 8:00 AM - 4:00 PM Microsoft Teams
Cost: $1,500.00 USD
Online Registration
CEU's: 1.6
Instructor: Mr. Lawrence Dull

Course Overview

Upon completion of this seminar, attendees will be able to:

  • describe how all parts of an extrusion line interact with plastic material to affect final product performance and quality
  • identify various polymer materials used to produce blown film and discuss important film properties
  • discuss in detail the hardware specific to blown film processing, including extruder components, tower, takeoff and winding components
  • describe how bubble geometry creates the molecular structure that influences film properties
  • troubleshoot both extruder and film problems

Online Course Requirements

We want you to have a great experience participating in our remote (online) courses, and for that, you’ll need the right equipment and internet connection.

Minimum needs are:

  • A broadband internet connection that has at least a 2 Mbps upload and download speed.
  • A computer (PC or Mac) that can support the latest web browser versions.
  • At least 4 GB of RAM and adequate hard drive space.
  • A microphone and a speaker.
  • International Students: For virtual (online) courses, an additional fee will be assessed to cover the cost of shipping the professional binder (presentation slides), to your address. The cost of international shipping can be significant.

For more information, visit our Online Course Requirements webpage.

Instructor Biography:


Lawrence (Larry) Dull is a graduate Packaging Engineer (B.S. and M.S.) of Michigan State University. He has held positions with Eastman Kodak Company, Calgon Corporation (subsidiary of Merck and Company Inc.) and Syngenta Crop Protection Inc. (formerly Novartis, Ciba and Ciba-Geigy). He is currently President of Packaging Technology Associates Inc. and a founding partner of Packaging Knowledge Group, LLC. He is active in several industry and professional associations including ISTA (International Safe Transit Association), ASTM (American Society for Testing and Materials), and IoPP (Institute of Packaging Professionals). He holds nine U.S. patents in the field of packaging and has delivered numerous presentations and written numerous articles on packaging, packaging development and package testing and is an Honorary Professor at Hunan University of Technology in China. Larry is a past Chairman of the Packaging Task Group of RISE, past Chairman of the Chemical Packaging Committee of IoPP, past President and Chairman of IoPP and past Chair of the Sustainable Solutions Division of ISTA. He is an inductee in the PMMI Packaging Hall of Fame, the Michigan State University Packaging Hall of Fame and the IoPP College of Fellows and has been awarded the David LeButt Award for outstanding contribution toward continuing education in the field of packaging from ISTA.

Blown film Theory and Practice 

  1. Polymer production
    • Additive vs. condensation
    • Amorphous vs crystalline
    • Degree of crystallinity
  2. Blown film polymers
    • Overview
    • Rheology
    • Film properties
  3. Extrusion fundamentals
    • Equipment
    • Operation of extrusion lines
    • Processing variables
  4. Blown film lines
    • Dies
    • Processing variables
    • Bubble properties
    • Film orientation
  5. Film finishing operations


              If you have any questions or need more information about this course, please contact:

              Penelope Pinkston

              TO REGISTER

              Online Registration


              Registration Form

              Registration information: Registration shall remain open until posted as closed on the course listing on this site.

              Registrations must be guaranteed by check, a purchase order number or a credit card, otherwise the registration will not be processed. Checks should be made payable to "The Akron Polymer Technology Services Training Center" and must include a copy of your completed registration form. Course fees are due before attending.

              All registrations—whether by online, phone, fax or mail—will be confirmed and considered binding and subject to all cancellation policies. If you do not receive a confirmation prior to the class, please call The Akron Polymer Technology Services Training Center to verify your registration.

              Course fee includes classroom instruction, instructional materials, parking permits, continental breakfast, lunch, beverages and refreshment breaks. Travel and hotel accommodations are not included.


              Visit our registration webpage to view our cancellation/withdrawal policy.