١٣-١٢-٢٠١٧ الأربعاء , ٠٩:٣٧ مساء

Blown Film

What is Blown Film Extrusion?

Process_Diagram-Blown_Film

Blown Film Extrusion is one of the most common polymer conversion processes in the world

Film is made by extruding molten plastic through a circular die, forming an inflated tubular bubble that moves through a cage as it cools, that is then collapsed and formed into rolls

The typical film blowing process consists of a series of stages, including extrusion, blowing, collapsing, and winding

HIPF Course Description

Course Objective

At the end of the course, the trainees will be able to:

  • Develop a working knowledge of and learn how to operate a Blown Film Extrusion machine
  • Understand the basics of blown film technology, the common material used, and some common problem solving situations
  • Analyze and solve practical blown film problems
  • Develop a working knowledge on maintaining a blown film machine

Course Outline

  • Principles of Blown Film Extrusion

      Definition and Principle; Product and Applications; Film Fabrication Process; Types of Blown Film Machines
  • Resin Materials for Blown Film

      Raw Materials Use for Blown Film Extrusion; Three Common Polyethylene Grades Used for Blown Film; Suitable Grade index for Blown Film
  • Safety Education for Blown Film Operation

      Safety Guideline and SOP; Personal Protective Equipment (PPE); Safety Devices; Warning Signs; Safety Rules for Operation; Safety Instructions on Operation
  • The Main Components of Blown Film Machine

      The Extruder; The Die Head and Die; The Bubble Cooling System; Bubble Stabilizer; The Take-Off System/Pinch or Nip Rolls; The Wind-Up System; Corona Treatment
  • Die and Air Ring as Major Components for Blown Film

      Kinds of Die for Blown Film; Details of Die and How It Works; Details of Air Ring and How It Works; Die and Air Ring Care and Maintenance
  • Introduction to the Blown Film Extrusion Machine

      BFE Process Flow; Start-Up of Blown Film Line; Quality Control for Blown Film; Scheduled Shut-Down of Blown Film Line; Emergency Shut-Down of Blown Film Line; Switching On After Emergency Stop
  • Operating Skills for Blown Film Extrusion Technology

      Checking of Machine Conditions Before Operation; Winder Preparations; Film Guide Set-Up and Importance; Blown Film Run Preparations; Die Checking and Adjustments; Parameter Setting-Up; Switching On After Emergency Stop; Changing Die; Changing Materials and Filling Procedures
  • Die Dismantling, Cleaning and Mounting

      Die Dismantling Procedure; Die Cleaning and Care; Understand Die Assembly and Mounting
  • Blown Film Extrusion Troubleshooting

      Types of Trouble of Blown Film Process; Unstable Bubble; Film Appearance; Machine Malfunction
  • Common Secondary Film Processing Methods

      Printing; Bag Making Process; Scrap Recycling
  • Quality Control of Blown Film

      Quality Check for Blown Film; Production Recording; How To Report the Result of Manufacturing
  • Practice Plant Operations