Here is a little update to explain to you guys a new technique we discovered.
The output product is hollow tube made out of LDPE pallet wrap.
Needed material :
– 1 plancha
– heat protection gloves
– LDPE Pallet wrap (seperated into thin layers)
– a cylindric metal bar (cut it so that it’s length is smaller than the plancha…[Read more]
Hello Paul !
(since you asked me in MP too, i’ll just copy my answer here so it can benefit everyone)
I don’t think there is any way to decolorize plastics. The color of a plastic is due to the pigmentation additives it has in it.
I work it out the other way round; as i color ”transparent” plastic through addition of colored plastics (of same…[Read more]
Nicolas replied to the topic [MJC des 4 Bornes -FR] about to launch our project in the forum Welcome! Meet eachother 3 weeks, 5 days ago
Welcome on the international PP Forum 🙂
Are you starting with all 4 machines or maybe are you thinking of building and using them 1 at a time ? (or schredder + 1 ?)
If you want any help with national stuff, i setup i discord platform for the french community 🙂
Here is the link : https://discord.gg/TfXKRe6
Good luck with that…[Read more]
i managed to do that in a multiple step process !
Print object in PLA.
Make a little wooden box, hollow in the top.
Put 3D printed (PLA) product in wooden box.
Fill the box with a thermoset resin (so heat doesn’t impact the moulding process); i am sorry i can’t recall which resin was used, but it can be found “more or less” easily in…[Read more]
i really have to insist on the SLOWNESS of the degradation process.
We baught approx 200 larvas; they are living through their 5th or 6th cycle now; and are still eating the same expanded polystyrene we put almost 7 months ago.
VERY VERY SLOW process ! (but interesting nonetheless :p)
PET is very sensitive to 2 types of degradation :
– Hydrodegradation is caused by presence of humidity or water (H20) while trying to melt. The H2O breaks the PET bonds to form other chemical bonds.
-thermodegradation is caused by being at too high T° or too long at high T° (while already being melted)
I don’t think y…[Read more]
Hey there @ianrobbo !
bottle caps will “always” be PP or PE (which are from same family Polyolefin).
in order to have best quality of product output, i would recommend only using “food-grade” bottle caps, as the types of additives in them should be limited.
concerning the granulated PET/PP mix, from my point of view you won’t be able to do…[Read more]
Hey @btmetz !
Polyolefin is just the category which regroups mainly PE & PP, so it includes LLDPE, LDPE, HDPE & PP
here is from wikipedia https://en.wikipedia.org/wiki/Polyolefin
After my visit last year at Eindhoven (and saw they were experimenting with mealworms & PS foam), i had to give it a try myself !
It seems the larvas can sustain on PS Foam only, but when they evolve to scarabes, they need some sort of complementary food & humidity (i just add some soaked little pieces of bread every few days)
oh , and concerning the “100% recyclable” written on the bottles, welcome to the green washing 😀
let’s take the example of a PET bottle. Recycling industries have to take care of tons & tons of plastic at a time. So in order to be effective, industries specialize their process for a certain type of flux.
PET bottles is a flux of it’s own. Though…[Read more]
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