Plastic Material selection querie 1

[Geoff68]

Good Morning well atleast in Australia. I am in need of some advice as plastic engineering is not my forte as I am a Mechanical Designer not product... something I regret haah anyway... I am looking for a material that would be able to puncture a Aluminium Can ie. Coke,Pepsi etc. The part would come to a Conicalwhich would be used to puncture the can. If anyone could help advise I would be forever thankful!

Thanks Again
Geoff!
LinkedIn Profile > Link

 

[Pud]

This stuff should do it: Grivory

Products on sale example: Knives for crazies

Cheers

www.tynevalleyplastics.co.uk

It's ok to soar like an eagle, but weasels don't get sucked into jet engines.

 

[Geoff68]

Thanks alot! Much appreciated! Now pricing is the next issue.. we shall see haha. Thanks again!

 

[Pud]

It's comparatively expensive (if you have PP as a baseline!), but what most forget is that those sort of materials can be used at thinner wall sections as they are a lot stronger, and they also process much faster and processing time* is as important as base material cost!

You have to look at the total "in position" cost.

* Time = Money!

H

www.tynevalleyplastics.co.uk

It's ok to soar like an eagle, but weasels don't get sucked into jet engines.

 

[Demon3]

Resin prices:

http://www.plasticsnews.com/resin#

Chris DeArmitt - PhD FRSC

Plastics & Materials Consulting

http://www.phantomplastics.com

Plastic Training Seminars

http://www.plastictraining.com

 

[ornerynorsk]

ABS will work fine, so will nylon. Any other requirements such as the number of times, temperature, etc?

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[Geoff68]

Yeah I though ABS would be fine, just quite a outlay for tooling,

@ornerynorsk Number of times? Do you mean run off, we are looking at 1000 first. Then would be ordering 10000 rough 3 months depending on sales. Temperature
is Atmospheric to 0 as it will be subject to cool liquid when in use. Like I said eariler plastic moulding isn't my first language, as far as cavities go call me out if I'm wrong but
I think we can only use 1/very limited as it has a centre hole that will require a core making it more then a 2 piece mould.

 

[Geoff68]

And Thankyou Demon

 

[ornerynorsk]

Actually I meant to say the number of times that your molded part would need to puncture the Coke can. Initial prototypes and even production could be machined, rather than molded, if the part were not overly complicated.

Behaviour of polymers in colder temps are definitely not my area, but there are a number of posters here that are real experts in their field.

Injection tooling is certainly not inexpensive, but amortized out over the expected production volume or life of tool, you might be talking about pennies per unit.

Just my 2 cents, Good Luck!

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[Paulkuklych]

Be sure to test all of the conditions that the part will be subject to such as exposure to chemicals, sunlight, extreme temps, mechanical loads (stresses) and duration that they are applied. What about electrical & flammability requirements?

This is the most important part of any product development. It can be very expensive to make changes to part and mould design later.

Paul Kuklych

http://www.improve-your-injection-molding.com