Intro to Packaging Using Multilayer Plastic Materials: Pipe and Blow Moulding Applications

Upcoming course dates

Sep 21 2017 - £495.00

Select dates & register Enquire

Course duration: 1 day 

Shawbury Shropshire, UK


Products containing multiple layers of polymers are becoming more common especially in applications where barrier properties; strength; weight or cost are an issue. This course will look at the wide range of properties that can be obtained, the production processes to achieve them and the practical extrusion technologies used. 

Attendees will learn

  • Reasons for having multilayer structures
  • The range of materials that can be used in coextruded structures
  • Properties of various barrier polymers
  • Product design and material properties needed for desired properties
  • How to form multilayer polymer melts
  • Line layouts required to achieve products

Each of the two courses on Co-Extrusion and Multilayer Structures will have the same core subjects but will then concentrate on the applications for either Pipe and Blow Moulding or Sheet and Film. Delegates are invited to choose the course which is most relevant to their end use application.

Course Objectives

As a result of attending the course delegates will be able to:

  • Understand the benefits and cost implications for having multilayer structures
  • Understanding the polymer properties needed to provide desired properties or barrier resistance and be aware of the latest developments
  • Make informed choices when purchasing equipment
  • Identify the equipment required to produce multilayer structures• Recognize the faults in multilayer products from extrusion processes.

An alternative course exists for those interested in sheet and or film applications: Co-Extrusion and Laminated Multilayer Structures.

Course Content

Processing Technologies 

A review of all the polymer processing technologies and their capability to produce enhanced properties through combining different polymers.

Polymer Selection 

A review of the current and novel polymers available for the use in co extruded and multilayer structures.

Product Design

How a structure can be designed for packaging, construction, automotive and medical applications.

Properties of various barrier polymers 

A comparison of the properties for various barrier polymers with an extended evaluation of the properties of EVOH for different applications.

Forming multilayer polymer melts

The many types of extrusion dieheads are reviewed and the possibility of forming multilayer structures examined. The rheology of different materials is reviewed in relation to the principles of die design. Examples of theoretical modeling are provided.

Line layouts 

The implications of using multiple extruders is examined and the requirements made for control and ancillary equipment.

Quality and process control 

How to be in control of the process and product for multilayer structures with practical SPC examples demonstrated. A practical case study is given for obtaining multilayer pipe to customer standards. Start up and shut down procedures are given.

Possible faults and trouble shooting 

The instabilities due to using multiple layers are considered. Potential defects in products are examined and linked to the end physical properties and quality control.

Time is given to delegates in the final part of the course to discuss their own specific application areas with Dr. Peter Cox.

Specific Applications:

This course will concentrate on structures and processes for blowmoulding and manufacturing pipes/tubes from 1mm in diameter, for medical applications, to large bore pipes. A practical case study examines how to obtain multilayer pipe to customer 

Who Will Benefit?

This course will benefit:

  • Technical Managers
  • Production Managers/Engineers
  • Process Managers/Engineers
  • Quality and Technical Services Personnel
  • Technical Sales Personnel
  • Those responsible for design and development of products who wish to gain a greater understanding of the properties and processing methods of multilayer structures.

Presenter Information

This course is presented by:

Dr. Peter Cox, B.Sc. (Eng.), DIC., C.Eng., MIMech.E., FIMMM