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In reply to: Types of plastic

dedicated
28/03/2018 at 11:35
1

@plasticinabackpack
Meting PE bags in an regular oven is relatively safe to try with. Also ironing bags in many layers together can create stiff blocks of PE

In reply to: Types of plastic

dedicated
27/03/2018 at 21:04
1

@plasticinabackpack,
Unfortunately, it dense foam is made by thermossetting plastics and therefor not recyclable. It is not possible to make ‘foamy’ plastics with recyclable types.

HDPE does meet your requirements and is perfect for products like mallets, hammers etc

dedicated
06/12/2017 at 13:30
1

@armbouhali
I did not had any time to test this (first graduation).
Still I would love to test this. I will update if I found any solutions

In reply to: Beams

dedicated
24/11/2017 at 10:55
3

@waterguy, A lot of people want to make decking, roof tiles etc. But not all plastics can be used since some types degrade in UV light. Maybe somebody should do some research on this. I did a bit See the cards in this topic but this is still a bit vague.

dedicated
24/11/2017 at 10:45
6

@erknost, @plastikfantastik, There is a search option in the main forum page

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dedicated
21/11/2017 at 11:01
1

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.

See picture

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dedicated
18/11/2017 at 17:29
0

@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)

Cheers!
Mathijs

dedicated
29/09/2017 at 11:35
0

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.

In reply to: Good old floppy disks

dedicated
15/09/2017 at 14:34
0

Hi @rowine
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!

In reply to: Space Requirements

dedicated
25/08/2017 at 11:51
1

@ptdecker @gadewaal,
For the container project, we build a full work space in a 40ft (12m) by 7ft (2.5m) container.
This fits easily. Be aware that if you collect a nice amount of plastic, the sorting and storing of the unshredded materials take up the most space.

In reply to: Plastic for shoes ????

dedicated
21/08/2017 at 10:23
0

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

In reply to: Plastic for shoes ????

dedicated
19/08/2017 at 12:20
0

@chewey,
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.
plastic bags

dedicated
07/08/2017 at 19:37
3

Hi @lwfbiochar,
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.

Mathijs

dedicated
12/07/2017 at 12:39
0

@siemenc,
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

dedicated
12/07/2017 at 12:30
0

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,
Difficult topic.
My advice: Cooperate a bit to push PP to higher levels, dont sell the PP hart.

In reply to: Toxic

dedicated
10/07/2017 at 10:54
0

@abeedmohaimin
Depends, PVC is harmful (do not melt this because it releases bad toxins), Polystyrene and PET you need to handle with care. PP and PE are relative safe (although you do not know what additives are used). Try to avoid burning at all time

dedicated
07/07/2017 at 13:55
0

@andyn, nice idea, maybe I can test this next week!

dedicated
07/07/2017 at 13:24
1

@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.

dedicated
06/07/2017 at 23:45
1

@siemenc,
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.

Mathijs

dedicated
04/07/2017 at 18:07
0

@toochi84
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.

dedicated
02/07/2017 at 15:46
0

Hi @casb
I think i can reply in @davehakkens name. This is more a side project we are working on. Not sure if this will be soon shared to the community as a total building manual.
We will keep you updated

In reply to: How to build a mold?

dedicated
01/07/2017 at 12:11
0

@incred A mold for what product? any specific questions?

In reply to: PVC pipe

dedicated
22/06/2017 at 16:08
0

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

dedicated
22/06/2017 at 12:27
0

work done in PP HQ
Some examples. It does not look like plastic bags at all. Also the feeling is totally different

dedicated
19/06/2017 at 23:47
0

Hi @jegor-m
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.

dedicated
19/06/2017 at 10:18
0

@lukecrawley,
3mm is though I would say. I think it is possible with a strong motor. Look into a extreme strong connection between motor axis and the shredders axis. Also mixing plastic with other resin gives a non-recyclable (is that a word) outcome.

dedicated
16/06/2017 at 15:20
0

@eslik
No there are no collection points yet.

@faro360 At the headquarter we work with plastic from second hand store which they can not sell. You can see this in the 3d montly update

dedicated
15/06/2017 at 15:41
0

At precious plastic HQ we work on the stamps as well. Keep you guys updated.

dedicated
15/06/2017 at 10:02
1

Rice and Carry

Look at the product that Rice and Carry makes: fusing bags into sheets for proper bags, purses etc.

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dedicated
15/06/2017 at 09:57
0

@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.

Viewing 30 replies - 31 through 60 (of 89 total)