Polypropylene Spec 1

[alintz]

A machined plastic part designed and sourced in England lists the material as "thermally stabilized polypropylene". It has a smooth finish and an opaque biege/gray color. I want to make some parts from the same material, but I can not get a detailed spec from the UK supplier, and I can not find a source for this kind of polypropylene in the US. Supposedly, this material is common in the UK.

I got a sample of Propylux HS from Westlake Plastics. It is heat stabilized, but it is a bright white color and so does not match the beige/gray parts from the UK.

Any ideas how to identify and locate a source for this plastic?

 

[kenvlach]

I have only seen PP in natural, white, black and blue.

Can you use CPVC? A standard color is gray or light gray:

http://www.harringtonplastics.com/Catalog/catalog12pdf_files/Section11/11_7.pdf

Thermally stabilized only means that it was annealed.
Flame retardant has an additive (I believe boric oxide) and has been UL tested.

 

[jdarco]

In the piping biz we call that "euro gray"! You might try calling one of the big (Cadillac Plastics, Port Plastics, Total Plastics)plastic sheet rod tube distributors and ask them for "stress relieved" sheet or rod in "euro grey". You can also check these websites; they are typically piping suppliers but they may be able to refer you to someone.

http://www.asahi-america.com

http://www.us.piping.georgefischer.com

Good Luck.

 

[EdClymer]

Hi

Here in the Uk we use beige PP: how can I help?

Regards

Ed

 

[EdClymer]

Hi

I forgot to add; Tech@Resinfab.co.uk

Regards

Ed

E Clymer CEng
Birmingham, England

 

[alintz]

Hello Ed, Thanks for your reply. What specification do you typically put on a mechanical drawing to get a part fabricated in beige PP?
Andy

 

[Soupcat]

Alintz,
Can you not arrange a colour match and order pre-coloured compounded material from any PP supplier and anneal the parts post moulding?

Kieran Fegan

http://www.moulddesigner.com

 

[alintz]

Hello Kieran,
I use small quantities of small PP parts that are machined from PP sheet. Quanties are too small for custom mixing, matching or molding.
Andy Lintz