Vertical vs. Horizontal vs. Compression Molding

One follow up question for you: you stated that in compression molding, the thermoset cures in the mold. Is that not true in injection molding? Does the plastic not cure in the mold? Is it already cured before it's injected? After?

Have another one (GA)

This is a really good web site. Well done.

Too bad they didn't get the spelling of molding right.

Thats that tomatoe - tomatoe bit .. in the UK the English spelling is with a U "Moulding" other places dont quite get it..

I know, I know.

Bonnet, boot, petrol, lorry and using u's when they aren't needed.

It's taken us Yanks a long time to straighten those mistakes out.

But I would still rather live there, than here...

Oh please; U yanks!

The French are responsible for all the random 'u's

tomato <note no 'e' in either spelling.

And for what it's worth, originally; dialect (Northern English) mowlde mouldy, from the past participle of moulen to become mouldy, probably of Scandinavian origin; compare Old Norse mugla mould.

In Earth Sciences / Physical Geography) loose soil, esp when rich in organic matterPoetic the earthOld English molde; related to Old High German molta soil, Gothic mulde

Mold as to form; C13 (n): changed from Old French modle, from Latin modulus a small measure, module]

Or different roots and different meanings - but Americans - the one's that put 'z' for 's' in every other word - say it as 's' - but call 'zee' - 'straightened it out?'.

I'm sure that Americans would spell would wood, given half a chance.

Like hood and hood, not bonnet and thug - _{wearing a bonnet -} in a neighboUrhood

And 'gas' for gasoline, and you complain about 'petrol' for petroleum?

So what is LPG in American? Ay?

So there

I highly recommend Videos for gallagher.

This guy has some excellent material on mostly American's butchering of spelling and language, not to mention the Veg-o-matic scenes.

Then there's Dan Quayl, former American Vice-President, who corrected a school child's spelling of tomato by insisting that an "e" be added to the end.

Go figure.

Oops...

Quayle, and it was a spud.

An elderly woman unexpectedly meets a friend of hers at the shopping mall, the friend with a 5 year old girl in tow. "And who is this darling child?" she asks. "My neighbors' daughter, just watching her for a few hours while mom tends to a few errands" came a reply. "She isn't very 'P-R-E-T-T-Y', is she?" Without a moment of hesitation the girl pipes up and says "No, but I am a pretty good S-P-E-L-L-E-R."

I knew I shouldda Googled before I opened my mouth.

I just figured you borrowed the 'e' from vice president Quayle's name for 'potatoe'.

GA for #4, by the way. Good description.

Thanks.

It's one of the few things I actually know something about.

He He He!!

Heheee - he's pretty good and it's all horribly trUe aboUt school.

ActUally an 'e' makes sorta sense on po-ta-toe.

The one that cracked me up was 'the French have no word for entrepreneUr' OWTTE

ThoUgh I was forced to give you one for each post - good job on both - we can't encoUrage that sort of "all dUn and dUsted", can we?

Nice link. GA

Vertical moulding is usually the second stage of a multi- material molding.. the classic example would be the toothbrush molded with a soft rubberised grip and tongue feature the normal injection process is done on a horizontal press but before ejection the secondary tooling cores and gates are opened to allow further material into the tool Secondary horizontal in this instance would not be possible due to space, cycle times etc. Primary and secondary horizontal and vertical from above and below are mostly used in sole manufacture for sports shoes, with multiple cores and materials going into the primary tool.

Vertical injection moulding is a term for a secondary op that is not parallel to the PRIMARY injection so it refers to anything at any angle not just at 90deg

This is primarily a tooling function. I would advise you look at complex tooling situations and talk to toolmakers about the problems-skills needed to make it work.

Hope this helps...

Generally called 'cross head injection' - different thing entirely.

As a rule I don't do this - but for you I'll make an exception - OT

The thing is to help him understand it .. toolmakers are the best at that I think