Thermo-recyclable waste bin

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Pouletpsy
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Thermo-recyclable waste bin




by Pouletpsy » 26/09/16, 17:38

Hello everybody

We are a group of three first IS having a TPE project. This project would consist of recycling plastic at home (limit to 1 or 2 uses). The bin would be made up of two "chambers": one for the crusher and the second for the molding. To mold the plastic we would use the toaster systems (which can go up to 300 degrees according to my research ^^) to melt the plastic and then mold it (for our project we will take the shape of a plastic plate not to complicate it) with a mechanical action. Our problem was: How to recycle plastic at home while respecting the conditions of sustainable development? This question would be detailed in three points: 1) environment 2) Social 3) Economic.
For 1), several concerns: we do not know which plastic used without being harmful to the environment during its combustion?
For 2), the major concern: finding which plastic to use without it being dangerous for the user.
For 3), I don't see any real economic problems, since we use electrical energy.
In short, in short, the big concern is which plastic can we use ??? I did some research and I first thought of PET but it is toxic to the nervous system. So I went to the EP. Can you enlighten us about our project?

Thank you in advance for your answers ! Hoping not to have said nonsense.
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Ahmed
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Re: Thermo-recyclable waste bin




by Ahmed » 26/09/16, 18:57

Others than me, more competent on the technical aspects will be able to indicate the appropriate matter to you: I would confine myself to a few general remarks.

- The title is rather badly chosen! It is, if I understood correctly, a compact device allowing to reuse the plastic material of end-of-life objects to make new objects, this in a domestic context.
- "Sustainable development" is a huge hoax, but you are not responsible for it ...
- This kind of "school project" is very artificial, you need to respect a certain formalism in the process, regardless of the actual content of the report: everyone will be happy! If you are asked to find a problem, you must arrange to find one! Regardless of its real relevance, it is enough to find supporting arguments ... For example, for point 3, it is necessary to determine what the cost of the total consumption of electrical energy represents compared to the value of your plates.
Last remark, it would be good to pay attention to the written expression : roll: ...
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Re: Thermo-recyclable waste bin




by dirk pitt » 26/09/16, 19:30

Ahmed wrote:- This kind of "school project" is very artificial, you need to respect a certain formalism in the process, regardless of the actual content of the report: everyone will be happy! If you are asked to find a problem, you must arrange to find one! No matter how relevant it really is, you just need to find supporting arguments ....


I also just discovered this sad aspect of things with my daughter in final STI2D (I'll let you guess the meaning of "2D")
indeed, we don't care whether the subject is relevant or not, as long as we do "everything well as we said"
that's how we teach our children to think. we're in shit.
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chatelot16
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Re: Thermo-recyclable waste bin




by chatelot16 » 26/09/16, 19:56

yes we are in shit

if we want to make plates it would be desirable to make them in clean plastic ... not in cochonium from garbage

a bin that does direct recycling? absurd: a trash can is a trick to get rid of waste, not a complicated machine

recycling machines would be useful but it requires to cleanly sort the clean part of the waste: store the clean part in clean containers ... and multiple containers for the various usable material ... each time we mix we lose the value ... every time we mix it goes from useful material to expensive waste to dispose of

to properly sort and value the waste it would take space ... well covered building ... I just passed next to a recovery company, the lack of covered space is lamentable! a lot of things get lost and get dirty because it's outside
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Re: Thermo-recyclable waste bin




by Ahmed » 26/09/16, 20:36

@ Dirk Pitt: this is the post-modern version of scholasticism! : roll:
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phil53
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Re: Thermo-recyclable waste bin




by phil53 » 26/09/16, 22:08

There are several approaches to this subject.
http://www.wedemain.fr/En-6-minutes-cet ... a2012.html
http://www.wedemain.fr/Recyclez-votre-p ... a1968.html
It starts with a good feeling but in the end, do we need these objects that we could create?
I am not at all mystical and even less wise, but we should not rather work on oneself and seek what is really essential in our life and more prosaically work in the direction of the reduction or even the eradication of these plastics which are mostly packaging.
One example among others: 95% of bottled water should not exist since tap water is very good. The remaining 5% should be reusable, returnable glass.
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Re: Thermo-recyclable waste bin




by Flytox » 26/09/16, 22:38

Pouletpsy wrote:
To mold the plastic, we would use toaster systems (which can go up to 300 degrees according to my research ^^) to make to melt plastic then mold it ...


For 1), several concerns: we do not know which plastic to use without being harmful to the environment when combustion ?

Melt or burn? Burn one part to melt the rest?
To burn must be forgotten immediately because it pollutes especially with an unsuitable installation.
Anyway plastics are harmful to the environment, the nuance is to find the least harmful. I am not a specialist but it seems to me that the most harmful when they cry are PVC and PTFE finally it depends on what you do with it and where you locate your lungs ...

For 2), the major concern: finding which plastic to use without it being dangerous for the user.

If you melt, it is absolutely necessary to control the temperature otherwise it melts more or less on one side while on the other it burns, releasing force more or less toxic filth ...

For 3), I don't see no real problems economical, since we use electrical energy.

In fact it will not be nuclear power plants (mass extermination) that produce your electricity without problems? .... : roll:
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Pouletpsy
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Re: Thermo-recyclable waste bin




by Pouletpsy » 27/09/16, 07:51

Hello,

Already thank you for your answers, it has advanced us well for our project!
Flytox to answer you, we just want to melt the plastic by controlling its melting temperature. ^^ '
chatelot16, we take the form of a plate because it is the simplest to make. But there is not necessarily only one form, by recycling plastic you can do a lot of things so I let you imagine what we can do. Then create a machine capable of sorting waste? So analyzing each composition of clean waste or not when it is thrown away, it is quite complicated much more than molding the plastic at home.
And finally Ahmed, we don't have a real happy title yet :D
The question rests: what type of plastic can we use without being harmful to our health?
Thanks in advance!
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Re: Thermo-recyclable waste bin




by chatelot16 » 27/09/16, 08:54

molding thermoplastics is a complicated technique! melted plastic is not a liquid that can simply be poured into a mold: it is just a little pasty (therefore plastic) and it takes a lot of pressure to get it into the mold ... you also need a thick steel mold resistant to high pressure

it therefore requires a molding machine and a mold which are very expensive and can only be profitable by making a large quantity of part

it is absurd to want to make thermoplastic molding with a small amount of recovery: it is necessary to separate the recovery from industrial activity: the only thing that can be done at a small level is sorting and washing to collect large quantities of clean plastic waste for sale to industrialists .... finally there should be positive selling prices and reminerator .... the recycling market is completely sabotaged by waste disposal which does not pay what has the value

I only see a molding technique possible on a small scale: it's the 3D printer ... heals it only works with types of plastic that are not found in waste: PLA and ABS

the most abundant plastics in waste is polyethylene PE and polypropylene PP ... it would be interesting to invent a 3D printer for PE or PP: it could work with recovery

there is another simple molding technique: rotational molding: it works well with PE
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phil53
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Re: Thermo-recyclable waste bin




by phil53 » 27/09/16, 21:04

chatelot16 wrote:.. it would be interesting to invent a 3D printer for PE or PP: it could work with recovery



And why do?
Who needs to make objects of lower quality than what exists to recover often in good condition in the trash.
There is really very little application or need to make an object. In addition it is time and we find everything inexpensive and better quality than a manufactured thing. You have to be passionate to find an interest. The proof people do not snatch printers d, it remains a product for business.
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