Understanding Injection Molding of Thermoplastics

Dette billede illustrere Understanding Injection Molding of Thermoplastics

Session with practical excamples
Please note that following our contract with Moldflow, the second
afternoon will be entirely devoted to a highly interactive session
in small groups around a practical example.
 The Moldflow software will be used live to analyze the
proposals of the different groups, illustrating in a very dynamic
way the key learnings of the session.
 We are entirely committed to continually improve our unique
training seminar for the benefit of the injection molding
community. We strongly advise participants who participated several
years ago to join us again for a vastly improved and extended
seminar with this new highly interactive final session in the
second afternoon.

Vito Leo teachingSeminar’s Scope
 This seminar will focus on complex phenomena behind the
Injection Molding process, with strong emphasis on the
understanding of part’s problems (aspect, shrinkage, warpage, weld
lines, burns, …) and their relationship to material properties
(amorphous, semi-cystalline, filled, unfilled) and the process
itself.

The participants we expect could be :
• design engineers in charge of molded parts
• mold making specialists
• molders
• flow analysts looking for analysis interpretation support
• project leaders involved in developing molded parts
• research engineers interested in injection molding
• mechanical engineers interested in process induced weakness and
strength
• material engineers or designers wishing to improve their
understanding of a given class of materials (i.e. glass fiber
filled polymers).
• students involved in the field
• young, skilled professionals with little field experience
• flow analysis developers
• customer support engineers
• …

The BIMS 2-day seminar content
• Basic polymer thermal and rheological behaviour.
• Effect of pressure on polymer properties.
• The flow process in Injection Molding.
• Part geometry and flow pattern.
• Compressibility, phase change and PVT data.
• What is crystallinity and how does it affect processing?
• The packing phase: key to the dimensional quality of the
part.
• Effective part, mould and process design for proper cavity
packing.
• Understanding the shrinkage build-up.
• Part warpage mechanisms: designing for minimum warpage,
according to material properties and part shape.
• Warpage: the special case of fibre filled materials.
• The concept of residual stresses: the compromise with
warpage.
• Final conclusions and wrap-up – Seminar evaluation by the
participants.

The seminar is not specifically about Injection Molding
Simulation. However, the intention is to clearly help those among
the participants who are “Flow Analysis users” to gain a thorough
understanding of the concepts that form the basis of existing code.
Model assumptions and corresponding limitations will be highlighted
and discussed.

 The seminar will be highly interactive, with limited
attendance, allowing for questions, group discussion and analysis
of the attendant problems. Parts or drawings are welcome for open
discussion, when possible.

The first part of the seminar will quickly describe the process
cycle for the purpose of setting up a common vocabulary.

The seminar may not fit the needs of beginners in the field.

More information on detailed content and the questions to be
discussed and answered can be seen at the BIMS homepage (address
below).

Further information
Dr. Vito LEO, Sentier de BOMAL 8, 1315 INCOURT – BELGIUM,
vito@bims-seminars.com, TEL.: +32 478 449709. FAX : +32 2
6125066.
https://bims-seminars.com.

Previous and future seminars
 The seminar has now been presented to more than 1000
participants throughout Europe, including private sessions at Nokia
in Finland and Denmark, Ericsson Sweden, Bang & Olufsen, Oticon
and Novo Nordisk in Denmark, Plastic Omnium, Adidas Salomon Sports,
Valeo Lighting Systems and Hager Electro in France.

The speaker’s education and professional experience
 Vito LEO is a physicist by training, and has been working
for more than 20 years in the field of Polymer Processing. He is
particularly active in the field of Injection Molding of
Thermoplastics and the use of Finite Element Numerical Simulation
of this process.

 He works for the largest chemical company in Belgium and
is currently involved in a number of research projects in the field
of Rheology and Injection Molding. He is also in charge of the Flow
Analysis group that uses available commercial software to support
injection-molding customers.

 His well known expertise has recently gained him a
Professor position at Université Libre de Bruxelles, where he is
currently teaching an introductory course in Polymer Processing to
students of the Engineering Faculty.

The speaker’s word
 As a professional in the Plastic Industry for many years
now, I have met a very large number of people involved in this
field: part designers, mold makers, molders, technicians on the
shop floor, or academic people involved in fundamental research. I
have always had the impression that everyone has a limited view of
the problems, a good understanding in his particular field, but
usually little knowledge of the process as a whole. Even worse,
people usually do not understand each other because their job and
training background are so different. Very few part designers or
project managers know about the really peculiar behavior of molten
polymers in a molding process. And no University Professor or Flow
Analysis developer seems to know how a molding machine REALLY works
or how a mold is made.

 During all my professional life I have tried to bridge the
gap between those different approaches, being involved in academic
research, attending conferences or training sessions, publishing
papers, using software, but also spending a lot of time on the shop
floor, running the machine myself, and working days and sometime
entire weeks in molding shops throughout the world optimizing the
process.

 Flow Analysis Codes (Moldflow®, Moldex® and the likes) are
now established and respected tools, readily available on PC and
with excellent user interface and very good modeling capabilities.
But optimum use and proper interpretation of results still requires
very skilled and experienced specialists. The users I come across
are often young computer minded engineers, with limited knowledge
of plastics and processing technology.

 I also noticed that the recent boom in the Mobile
Communications Business is generating extremely fast growth in the
leading companies, where very young professionals are now in charge
of world-wide projects, involving complex plastic parts, special
materials, and very demanding dimensional and mechanical
requirements. These engineers would certainly benefit from an
appropriate training in Injection Molding and Polymer Physics.

 Now that I feel that I have a good understanding of the
molding process and the underlying physics, I want to try to share
my knowledge with people in the industry.

 The challenge I throw at myself is the following: I want
to go deeply into the physics of the various thermoplastics
processing behavior, thoroughly explain the mechanisms involved in
this complex process from filling to final warpage, and yet present
this seminar material with simple words and concepts, and minimum
mathematics, so that the whole interested community, with or
without high level university training, will benefit from these
training sessions.

Why attend the course/training seminar?

Major arguments for attending the course are that
• The course will be highly interactive
• Attendance is limited, allowing for questions, group discussions
and analysis of attendant problems
• Parts drawings are welcome for open discussion when
possible
• You will get a thoroughly teaching in aspects of the polymer
injection molding process, in only two days
• You extend your professional network
• The teacher of the course, Dr. Vito LEO has been working nearly
25 years in Polymer Processing and has a well known expertise and
this course offers a unique possibility to be updated, guided by
Vito LEO.
 
 
 

TIME
October 29th, 2014: 10:00 to18:00 and
 October 30th, 2014: 08.30 to 16.30.

VENUE
DGI Byen, Tietgensgade 65  1704 København V, tlf.: +45 3329
8000.
Promoted in collaboration with the magazine Teknovation

Logo Teknovation

REGISTRATION FEE
 DKK 10.900 + 25% VAT.
 Includes sessions during the two days, educational
materials, luncheons, coffee breaks and dinner first evening. Excl.
hotel booking.
Reduced fee if registering before September 6th 2014: DKK 9.500 +
25% VAT.
 Members of ATV-SEMAPP gets a reduction of DKK 800.

REGISTRATION
 Click to fill in REGISTRATION FORM Fill in and send the
form. Registration is confirmed shortly after by E-mail (please
check your spam-filter if you don’t recieve a confirmation).

 Please contact the Secretariat in case of problems with
your registration:
 E-mail to: semapp@atv-semapp.dk,
 or phone Anette Kaltoft, +45 4525 4717 (09:00-12:30) or Ulla
Knudsen, +45 4525 4898.

 Room at DGI-Byen can be booked at the registration form,
but paying for the room must be made directly to the hotel before
departure.
 Min. 12, max. 25 registrations.

CANCELLATION
 Cancellations received 30 days or more before the seminar
are fully refunded.
 For cancellations received less than 30 days but more than
14 days before the seminar, 70 % of the fee payment will be
refunded.

No refund for cancellations received later than the 17th of
October 2014. Substitutions are accepted at any time.

Cookie-indstillinger