Tools for plastics processing I & II Lecture and exercise
Moulds for plastics processing I
Injection moulding
Injection molding tools must be highly reliable in daily use, so knowledgeable planning and design of the molded part and tool is an absolute prerequisite. The course “Tools for plastics processing I” teaches the theoretical knowledge and proven rules for thermal and mechanical design in order to be able to efficiently produce functional, cost-effective components that meet all requirements.
Contents of the lecture
The lecture begins with an introduction to the functional complexes of injection molds. Building on this, the demolding system, guiding and centering, the sprue and temperature control system and the mold cavity are explained in detail. In addition to the detailed description of conventional tools, all common special injection molding processes are also considered from a tool technology perspective. For example, in addition to micro injection molding, injection compression molding, which is used for optics and automotive glazing, is also presented. The focus is on the particular tooling challenges of thermoplastic molding compounds, but the processing of cross-linking molding compounds, such as liquid silicone rubbers, is also described and explained. The thermal and mechanical design of an injection mold is a basic prerequisite for efficient production and is therefore a key focus of the lecture. Analytical and numerical methods for the thermal and mechanical design of injection molds are presented. Both findings from the industrial state of the art and current research results from the fields of mold technology and plastics processing are included.
Exercise accompanying the lecture
© IKVIn the exercise for the lecture Tools for plastics processing I, the main topics of the lecture are deepened and put into practice. For example, the mechanical, rheological and thermal design will be worked out theoretically and practically in the context of simulations. Literature: Injection molding tools
Authors: Christian Hopmann, Georg Menges, Walter Michaeli, Paul Mohren
ISBN: 978-3-446-45192-6
Published by HANSER-Verlag
Important information at a glance
- Compulsory elective subject in the Master’s program
Plastics and textile technology and
Business Administration and Engineering specialising in Mechanical Engineering / Plastics Technology - Dates
Only in the summer semester - Scope
3 SWS (L2 E1) - Credit points
6 - Form of examination
Oral examination - Lecturers
Dr.-Ing. Christoph Zimmermann
Tools for plastics processing II
Extrusion
The demands for high output rates and continuously improved product quality of extruded semi-finished products, such as tolerances and surface quality, make it necessary to describe and comprehensively understand rheological phenomena and thermodynamic processes in various extrusion dies. This is the basis for a sensible tool design. The lecture “Tools for plastics processing II” provides the most important foundations for this.
Contents of the lecture
The lecture provides a comprehensive overview of the different types of extrusion dies and the associated methods for designing the dies. First, the basics of mathematical modeling of the flow in extrusion dies are introduced. The focus here is on the derivation of the flow equations and the rheology of polymer melts. Various industrially relevant die types are then explained. Both mono- and co-extrusion dies for thermoplastics and rubber extrusion dies are covered. The appropriate design of the various tool types is also discussed. Another topic is calibration. Various options for calibrating extruded semi-finished products and products are explained here.
Exercise accompanying the lecture
In the exercise, the main topics of the lecture are deepened and put into practice. The focus here is on the practical application of mathematical methods for the design of extrusion tools. The course concludes with an excursion to an extrusion plant, where students have the opportunity to experience the implementation of the lecture content in industrial practice.
Literature:
Extrusion moulds for plastics and rubber
Authors: Walter Michaeli
ISBN: 978-3-446-42026-7
Published by HANSER-Verlag
Extrusion Dies for Plastics and Rubber
Authors: Christian Hopmann, Walter Michaeli
ISBN: 978-1-56990-623-1
Published by HANSER-Verlag
© DF.FotografieImportant information at a glance
- Compulsory elective subject
in the Master’s in Plastics and Textile Technology and
in Business Administration and Engineering specialising in Mechanical Engineering / Plastics Technology - Dates
Only in the winter semester - Scope
3 SWS (L2 E1) - Credit points
6 - Form of examination
Oral examination - Lecturer
Dr.-Ing. Lisa Leuchtenberger-Engel