Inflation and shortages!

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MrSalts

Joined Apr 2, 2020
2,767
There's a plastic shortage but not the commodity plastics like polyethylene, polypropylene, PET, nylon

it's the polycarbonate, Polybutylene terephthalate (PBT), POM (acetal), some acrylics and some fluoropolymers. Not the commodity types sold through distributors but the specialty versions (specific colors, optical quality, FR grades and so on). Some because the specialty additives (distributors don't handle specialty grades so they don't see the problem). The thousand special additives come from all over the world and you can't approve a material for production until all the additives are available to make an automotive quality for an inner red taillight Lens - for example.

Another problem is a severe shortage for glass additives for glass-filled polymers. Some use ground glass, some use short glass fibers, some use a particular soft glass or square profile or specialty coated glass fiber to increase adhesion to the polymer.

These additive are required by specific applications. Without the right glass, talc or mica or whatever filler is needed - you may as well start over on your material specification. As you start over, the exact mold sizes no longer matter because the oversizing factor used for one plastic won't be the same for another plastic (one oversizing factor (shrink ratio) may be specified in plane of injection and anotherfor transverse. If you change materials, you'll need to wait for a new mold.

getting a new mold cut takes forever and it likely won't be right because the engineer in the project when you start may be working for two or three other companies by the time it's compete and none of the instructions were followed.
 

MrSalts

Joined Apr 2, 2020
2,767
No president in any country seems to resolve this issue in decades. I wonder when people can have a leader who can solve this issue.
Dictators can do it - not presidents. Solving things in the US requires too many people to agree and, if you get them all to agree, two-years later there will be an election and some new people may not agree.
 

Wolframore

Joined Jan 21, 2019
2,619
Dictators can do it - not presidents. Solving things in the US requires too many people to agree and, if you get them all to agree, two-years later there will be an election and some new people may not agree.
but the cure is another problem, weren’t they the cure for a different problem?
 

strantor

Joined Oct 3, 2010
6,875
https://hbr.org/2021/03/the-latest-supply-chain-disruption-plastics

Constraints on the supplies of their raw materials — especially polyethylene (PE), polypropylene (PP), and monoethylene (MEG) — are leading to factory shutdowns, sharp price increases, and production delays across a range of industries.
https://www.riskmethods.net/resilient-enterprise/plastics-shortage

2. What's the current state of the plastics shortage?
At mid-year, supplies of raw materials, plastic resins such as PE & PP and compounded plastics remain very tight. Prices that hit historic highs in March seem to be consolidating at high levels. Makers of plastic products have watched their lead times grow and costs increase.
https://www.resilinc.com/blog/an-update-on-the-polymer-shortage/

After unprecedented disruptions in the second half of 2020 and the first quarter of 2021, the turmoil in supply chains for polyethylene (PE), polypropylene (PP), mono-ethylene glycol (MEG), and other polymers has calmed somewhat. Still, supplies remain tight, and prices are at record highs—with further price hikes forecast.

There is not, and never was, any shortage of PP or PE.
 

Thread Starter

nsaspook

Joined Aug 27, 2009
16,359
Those in places like Germany bought the rope that's hanging them now. Yes, it was totally predictable that Russia would weaponize that energy dependence. That didn't take much of a crystal ball to see.
 

shortbus

Joined Sep 30, 2009
10,049
You know a very significant number of people today believe things that thirty years ago would have got you laughed at and kicked out of the bar for being drunk.
Now its acceptable to believe in what ever you like as long as self identify with and surround yourself with like minded people.
It does not matter if its real.
I quite well know that. A certain ex-official is making millions of dollars off of it. But even that doesn't make it right.

To base your life on a novel, not a philosophy, but a made up story, expounding on the merits of greed? That would be like a certain person claiming to own a company when he just draws a salary, like the guy sweeping the floor. My claims are provable with just simple Google searches.
 

joeyd999

Joined Jun 6, 2011
6,338
The US will be fine IMO but most of the the EU, maybe.
Oil, gas, and coal will flow to the highest paying customers. These will be Germany, GB, and the rest of Europe this winter.

This will reduce supply and increase price in USA. This is Econ 101.

Our economy is pretty much screwed until we accelerate exploitation of our home- grown resources.

And that ain't happening under the current green regime.

But, one can always buy an electric car they can't charge. So there is that.
 

drjohsmith

Joined Dec 13, 2021
1,618
Oil, gas, and coal will flow to the highest paying customers. These will be Germany, GB, and the rest of Europe this winter.

This will reduce supply and increase price in USA. This is Econ 101.

Our economy is pretty much screwed until we accelerate exploitation of our home- grown resources.

And that ain't happening under the current green regime.

But, one can always buy an electric car they can't charge. So there is that.
@joeyd999

Are you saying that "green" is the wrong way to go , and by extension, we should dig up all the carbon fuels we can and burn them ?
 

joeyd999

Joined Jun 6, 2011
6,338
@joeyd999

Are you saying that "green" is the wrong way to go , and by extension, we should dig up all the carbon fuels we can and burn them ?
Unfortunately, if I told you "what I am saying" this thread would get locked immediately and I would likely be banned permanently.

There are times when politics and engineering intersect (hell, everything is politics), but our lords and masters have decided that such discussions are verboten.
 

DickCappels

Joined Aug 21, 2008
10,661
Just an observation:
When a market chooses a solution (for example: coal) things work, though there may be unpopular side-effects (acid rain). When governments make major decisions, such as when Sri Lanka banned chemical fertilizers the desire for an ideal situation is way ahead of its time, if the right time every comes. How many "planned economies" have come to fruition, and how did those go compared to free markets?
 
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