wood to plastic glue

I have a plastic lid to a 30L container: http://tinyurl.com/gqdyq8y
I want to stiffen up lid with plywood disc .... either side Thought it would make sense to glue and through bolt .....
Anybody know of a glue that will work .......... not after much in way of structural strength, unable to confirm what type of plastic it is ... could use 'Sticks like s***t' or a Low modulus silicone
Unless anybody has a better idea
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On 19/11/2016 11:44, rick wrote:

Are you sure this is correct?
I get http://polypropylene/ and then Server not found.
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On Saturday, 19 November 2016 11:44:45 UTC, rick wrote:

Use silicon and bolt it through the wood and plastic.
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On 19/11/2016 15:46, harry wrote:

was my best thought
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On 11/19/2016 3:46 PM, harry wrote:

I think that would work too.
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On 19/11/2016 11:44, rick wrote:

Link messed up - try again: http://tinyurl.com/jcnev2m
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On 19/11/16 19:28, rick wrote:

Doesn't work either, but then photovomit never does.
Its probably using some sort of spyware /tracking that has caused it to be in violation of Natural Philopsohers' Internet Rights.
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On 19/11/2016 20:09, The Natural Philosopher wrote:

I have checked link it is working OK
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Yeah, works fine for me too.
The turnip has fucked up somehow.
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On 19/11/2016 13:55, Phil L wrote:

http://tinyurl.com/jcnev2m
my fault
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On 11/19/2016 7:28 PM, rick wrote:

Looks like it might be polyethylene / polypropylene, in which case conventional glues are not much use. Why do you need to stiffen it? Will you be trying to fix a pipe or duct to it, for example?
Sandwiching with plywood sounds like a good strategy. If you use something like bitumen mastic as the "butter" you will generate a lot of shear strength between the wood and the plastic, and reduce stress concentrations, it will also be tolerant of movements from differential thermal expansion, or from the effect of water on the plywood. No more nails sets to a rigid, brittle product.
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On 21/11/2016 15:23, newshound wrote:

I want to stiffen the lid as in needs to support a cyclone unit .... which is about 320mm tall .. onto which the pipes will attach .. as this means quite a leverage on the lid wanted to stiffen it.
Anyway did the job yesterday .... made up 2 x plywood collars (like large polo mints) and sandwiched the lid between these with 5 x M4 bolts .. and put a nice coating of silicone on both wood to plastic faces ... all pretty stiff now - without being brittle.
Trying to glue wood to polypropylene was not going to be successful.
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On 21/11/16 16:45, rick wrote:

(Amazon.com product link shortened)
You didn't say it was ployprop. That's almost as bad as nylon or polythene
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On 21/11/2016 17:51, The Natural Philosopher wrote:

Didn't know initially .. had details today Anyway done now with Silicone
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