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Possible, but you create a nasty end product with plastic and other materials mixed. Way more difficult to recycle again. You can play a lot with using other colored pieces of PS.
@rowine, with finishing my graduation at Precious Plastic in one month (15dec), I am more than interested in any recycling ideas near Rotterdam or Amsterdam (girlfriends city). At the moment I am in contact with people from Amsterdam but I am always open for a proper chat about any recycling ideas! One of my thought is making a sheet press for furniture (especially for public places like restaurants etc)
Acrylic is strong but kind of brittle. The forces in the shredder are extremely high. This is because the plastic is sometimes stacking and it is really tough stuff. I have seen metal shafts breaking in the shredder, metal bending etc. I would say acrylic is too weak.
I would say that the outer case is made of PolyStyrene (like cd cases). Other possibility will be ABS. If you break them, do they snap like cd cases?
All the other materials I do not really know. (I used them couple of times but i am a bit too young to have the full floppy experience).
We mainly avoided them because of the time consuming process of taking apart. But good to put the effort in it!
I where them sometimes without festivals. Of course you can make shoes totally from PE, but it will not be breathable at all. Also I doubt the comfortability
Hard to say. Soles are mostly from rubber or foam. Most foams are resins and not possible to recycle with Precious Plastic machines.
PE is the most flexible for something like a sole. But will we pretty slippery and sweaty.
Some kind of sandals are maybe possible of you fuse bags together.
Not sure if somebody did something like this before. But I do like the idea a lot! Because plastic is pretty though, other purposes should not be big deal (unless breaking glass or so).
Be aware that ‘just swapping’ different blades can take a lot of time since the blades are hard to reach.
I think the most budgets goes directly to projects not to salary.
And if some money is left over. You can maybe cover some expenses made by the people who worked in the team. I agree it is hard to let people know/ understand it is not about earning money but using money for the good case.
So that is why PP should maybe cooperate with companies on projects, not just sponsors giving money
Interesting topic. Curious what other people from the community think.
At first, it depends highly on the way of cooperation with the corporate. To answer with the fictional example:
If the corporate has budget to realize 10 workshops and you need to state somewhere that those workshops were made possible by company x. I personally think it is oke. (Probably a bit of green-washing but with a real, positive and good goal)
Try to avoid that one company is sponsoring in general.
Also I think, first some pilots (like Kenya) should be conducted to see how it works to install workshops in certain areas. It is a waste when the workshops are only set up but not used to their fully potential.
Getting more budget also requires better and certainly more budget management. This will maybe require to expand the team with some people with more managing skills. Somethings that can work out both positive and negative.
Also some cost coverage for people helping out should be good. Off course, people are already helping out big time but some do a lot of effort to help out (come to NL for half a year, rent a spot to sleep etc). Should be nice to support them a bit more with their costs. Not like a paid job, but more to help a bit.
Also a rent crew-house in Helmond is something that can maybe achieved with corporates supporting.
As you said,
My advice: Cooperate a bit to push PP to higher levels, dont sell the PP hart.
@siemenc we used a really long bar. We wanted to do what you said (using cooling to get infinite bars). However we found that the newest added material is going totally through the beam untill it gets to the end. So if I use for instance black, green, blue. Blue will be in the total beam in the core and the end of the beam, than the green, than the black. Maybe @davehakkens can show an image of that.
We guess it is because friction and the cool temperature of the tube that the new material is traveling true the core till it reaches the end.
Because of the molten core the plastic has not so much struggle to travel true the tube.
What you mentioned is done in the industry but requires a lot of cooling.
Industry extrusion beams
Btw shooting plastic sound really cool, this is a slow process.
@adyn we use still the same shreds. The screw gets only smaller were the plastic already is molten.
exactly what Dave says. Temp 235-220 with extrusion at full speed (@Davehakkens what is the speed). Filling took almost an hour. Then let it cool down and it is really easy to slide out. We were really surprised, first time something goes in one way as we hoped.
Later, we put a small wooden block in the tube to build a bit of pressure to get smoother surfaces. I will show a small stool, hopefully, next week.
If material gets recycled it is not considered as food safe. For food safe material production there are a lot of legislations about working hygienic etc. With recycling the products got in contact with materials that can contaminate the plastic. So it is officially not food safe anymore.
So it not about the type of plastic (although some types and additives are not food safe at all) it is about the process.
It mainly depends on the thickness. However PVC releases chloride when heated. A toxic gas. It is advised to not recycle that by amateurs because of the hazards
Normally we heat up, put new material in and press till the new material is not mixed with old (I know we create a small amount of mixed plastic, not very good)
That specific time, PP was burnt and did not want to come with the PS. Then I heated up de machine 250 C°, and put some cloth true the tube. Till the cloth came out clean.
At precious plastic HQ we work on the stamps as well. Keep you guys updated.
@petrowitch89 is right about that:
Recycling Scrap by Melting
It is also claimed that acrylic scrap can be melted in a high temperature furnace after separation and grinding. The molten liquid is put in mold plates and then taken to a pressurized oven for a period of 12 hours, making the acrylic plates again. The acrylic sheets can be used to create various types of products, furniture, decorative items, Car parts etc. It is reported that this is cheaper by 30% than the manufacture of the conventional Acrylic Plates.