Selecting the right plastic
Selecting the right plastic
(OP)
Hello, our company is now getting into custom molded parts and I am looking for help in selecting the right materials for the applications. I tried the Thomas Regional directory for plastic consulting services and got a bevy of suppliers that seemed like overkill. I have a part modeled and an idea of what it wants to be made out of and some requirements. What is the typical process for arriving at the right polymer and if it wants to be a blend, etc.? I would appreciate any help in the right direction. Thanks!
Mechanical Engineer
Field Forensics, Inc.
Engineering isn't about perfect solutions; it's about doing the best you can with limited resources. - Randy Pausch





RE: Selecting the right plastic
The first step is to identify your three main criteria, e.g. modulus, impact resistance and chemical resistance.
Chris DeArmitt PhD FRSC CChem
www.phantomplastics.com
Consultant to the plastics industry
RE: Selecting the right plastic
Mechanical Engineer
Field Forensics, Inc.
Engineering isn't about perfect solutions; it's about doing the best you can with limited resources. - Randy Pausch
RE: Selecting the right plastic
http://matweb.com/
This will give you some more overwhelming options.
There maybe more options to lower the cost than just going overseas. If you are inexperienced you will want the best vendor either place to support you.
RE: Selecting the right plastic
Mechanical Engineer
Field Forensics, Inc.
Engineering isn't about perfect solutions; it's about doing the best you can with limited resources. - Randy Pausch
RE: Selecting the right plastic
Chris DeArmitt PhD FRSC CChem
www.phantomplastics.com
Consultant to the plastics industry
RE: Selecting the right plastic
You need to state the application, the environment of use, the nature of the load, the properties of the existing material and any modes of failure or end of life.
From there we can progress.
Regards
Pat
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RE: Selecting the right plastic
http
Look for product selection guides.
Flint Hills Resources or basell will have some for PP.
Blending is probably adding some cost to your part. Finding a grade that doesn't need blending might provide some savings.
RE: Selecting the right plastic
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
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RE: Selecting the right plastic
may be this help you http://www.harringtonplastics.com/chemGuide.cfm
Regards
RE: Selecting the right plastic
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
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RE: Selecting the right plastic
He describes himself as a "mechanical engineer"
To correctly specify material with confidence you will need professional advice.
Chris DeArmitt PhD FRSC CChem
www.phantomplastics.com
Consultant to the plastics industry
RE: Selecting the right plastic
Mechanical Engineer
Field Forensics, Inc.
Engineering isn't about perfect solutions; it's about doing the best you can with limited resources. - Randy Pausch
RE: Selecting the right plastic
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
http://eng-tips.com/market.cfm
for site rules