polypropylene sheet in hexagon shape???
polypropylene sheet in hexagon shape???
(OP)
Can anybody tell me if technically is possible to produce polypropylene sheet in continuous hexagon (spiral) shape?
To be more clear I'm attaching the image of shape.
Thank you in advance.
Jaroslav
To be more clear I'm attaching the image of shape.
Thank you in advance.
Jaroslav





RE: polypropylene sheet in hexagon shape???
The pictured object looks like the kind of thing you could, theoretically, do with a rotating nozzle on an extruder... if there were such a thing. I'm not aware that there is, or isn't.
but you'd probably make a lot of scrap before you got the nozzle temperature stabilized... _if_ you ever got it stabilized.
OR,
You could skive it off the end of a rotating bar in a lathe.
You didn't give us a clue how big and how thick this 'sheet' has to be. The dimensions affect the cost of the tooling, and the likelihood of failure.
Mike Halloran
Pembroke Pines, FL, USA
RE: polypropylene sheet in hexagon shape???
The shape drawn can be injection moulded, but the mould will be expensive as it will need very large side cores.
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RE: polypropylene sheet in hexagon shape???
The size of sheet has to be at least 30 cm. wide and 0.8 mm. thick
Thank you very much for your reply.
Jaroslav
RE: polypropylene sheet in hexagon shape???
http://www.madehow.com/Volume-3/Slinky-Toy.html
TTFN
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RE: polypropylene sheet in hexagon shape???
RE: polypropylene sheet in hexagon shape???
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RE: polypropylene sheet in hexagon shape???
How many turns do you need... and how will you handle it as it's produced?
Mike Halloran
Pembroke Pines, FL, USA
RE: polypropylene sheet in hexagon shape???
I need about six continuous turns and later it has to be precut and folded into some product (patent pending)
I just needed to know if technology to create something like this exists.
It's possible to make this from separate sheets but it would have been much fancier to do it from one piece.
Thank you anyway.
Jaroslav
RE: polypropylene sheet in hexagon shape???
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: polypropylene sheet in hexagon shape???