Home /
Search 🔍
the Site

Chime right in! (no registration req'd)


"PVC compound"



I'm in sales. We are wire harness and cable assembly manufacturers. Cable uses UL2464 5 cores molded on 8 Pin mini din plug. During evaluation stage our assembly was put together with the end product with plastic casing (Computer) with packing, put into chamber test for 5 days under temp.62°C and the result was our cable assembly left a deep dent or grove on the casing and our cable is okay (UL 2464 standard 80°C and 300V)

Question : what could be the actual cause.

Please advise.


EC Koh
- Singapore


Hi EC Koh,

I know zilch about cables and little bit about plastics... so I'm going to assume that the cable material, the cladding, is PVC and not a softer material like Polyethylene (which burns easily unlike PVC).

Seeing that you are testing to 60 degr. C, well, that is the max. upper limit for RIGID PVC (in pipe corrosion pressure applications, for example) ... but you say it's not a cable problem but the computer casing .... and many computer casings are made of, I believe, thermoplastics like hi.impact PVC or ABS.

The ONLY thing I can surmise is that a) you gave us the wrong temperature b) the computer casing is made of Polyethene (highly doubtful!) or c) that the cable itself was being severely forced onto the casing.

Failure in thermoplastics is time/pressure/temperature orientated. The 60 degree temp. is not THAT high. The time of 5 days is a good test time. That leaves us with pressure or undue pressure.

Sorry, but I can't fathom your problem too well.


freeman newton portrait
Freeman Newton [dec]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).


"Industrial Design of Plastics Products"
from Abe Books


Affiliate Link
(finishing.com earns commission on what you buy after clicking)


I think the question you mentioned is the migration of PVC to ABS, Please contact your supplier of PVC compound, ask them to change the plasticizer in the PVC compound to Polyester.

Hankel Kang
- Shenzhen, Guangdong, China

finishing.com is made possible by ...
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Chemicals &
Consult'g, Train'g
& Software

About/Contact    -    Privacy Policy    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA