Best way to stick anything to "PLASTIC"......??

[abently]

Okay, firstly does the plastic surface texture affect adhesion major ? I believe it does depending on what is used....

Okay, so I used a two part Permatex plastic epoxy which is reasonable but not strong enough....

I'm yet to try a two part (powder & liquid) bonding agent but will do so and report.

I am considering trialling 'fibreglass bog'...........

The only thing I see working perfectly is a small blow-torch with a roll of plastic. I'll report back form that trial if I'm not dead from the fumes....

So anywayyyy, what have you or friends used with great success ?

[PULSE]

Hey mate, what exactly are you trying to stick together?

Cheers, Matt

[MR22ZZ]

what sort of plastic is it? fiberglass resin doen not stick to Poly Propylene for instance, so this is an important question.

there is a Loctite 'all plastic' adhesive which is pretty good for most things

[Sprinter-Saurus]

Tek screws.... Roofing tek screws.

[AAAAGZE]

LOCTITE 401 is an instant adhesive for most substrates.

LOCTITE 406 also for hard to bond materials.

there is a primer for plastics called 770.

401 will cost about 18 bucks for 25ml

770 will cost about 18 bucks for 100ml

check out their website to confirm suitability for types of plastics

[abently]

what sort of plastic is it? fiberglass resin doen not stick to Poly Propylene for instance, so this is an important question.

there is a Loctite 'all plastic' adhesive which is pretty good for most things

Its to the inside of a bumper bar (00 model vehicle). Unfortunately I am not sure which type of plastic it is.... I know that there are two types of plastics which are very fussy, so I guess, is there a way to test the plastic ? Assuming I can remove a discreet portion from somewhere.

[abently]

Hey mate, what exactly are you trying to stick together?

Cheers, Matt

A metal bracket, but this bracket contains holes which any bonding agent can fill in and over, so I'm not fussed if it can't bond to the zinc coated bracket.

[MR22ZZ]

an '00 model what?
most likely it's ABS plastic if it's a Toyota bumper component of that era though.

[horse]

why all the fucken mystery?

what are u gonna use the tab for? is there a lot of load on it?

FWIW Qbond does it for me

[Sam_Q]

I also used quick bond (Q-bond) on the corner of my bumper and it so far held up amazingly well. Want a pic?

[1975ToyotaCrown]

Industrial araldite bloody great mate.

[Hiro]

Duct tape






Seriously though,

The only thing I see working perfectly is a small blow-torch with a roll of plastic. I'll report back form that trial if I'm not dead from the fumes....

Ahh, good old plastic welding. Nothing wrong with it, as long as the materials are right. Hot air gun works better than a blow-torch though, less chance of burning or setting fire to things

[M.J.H]

LOCTITE 401 is an instant adhesive for most substrates.

LOCTITE 406 also for hard to bond materials.

there is a primer for plastics called 770.

401 will cost about 18 bucks for 25ml

770 will cost about 18 bucks for 100ml

check out their website to confirm suitability for types of plastics

What he said ^^^^^^^^^

[abently]

why all the fucken mystery?

what are u gonna use the tab for? is there a lot of load on it?

FWIW Qbond does it for me

There's no mystery here. I don't know what exact material the bumper is made of so am don't want to people pre-empting anything. Its a Honda btw.....

Yes there will be a lot of load on it.

[abently]

Ahh, good old plastic welding. Nothing wrong with it, as long as the materials are right. Hot air gun works better than a blow-torch though, less chance of burning or setting fire to things

Can you expand on this please. I.e. Where & brand of materials will I possibly need. I am seriously considering it as the only option due to the load that will be applied.

[trdee]

it's most likely ABS plastic as stated above

also araldite FTW as stated above

[big JON]

Plastic welding i would think would be the strongest method.

Otherwise Sikaflex

[merc-blue]

The bar will have its material type stamped on it. a cheap soldering iron and some scrap bumper from another car will do the job.
I have plastic welded a few things before with a proper plastic welder and it came our real good.

What sorta damage is it?

[wilbo666]

It should have the material type moulded into it somewhere... I'm pretty sure the the material information has to be on it for recycling...?

Also, why don't you draw us a pic of exactly what the system needs to look like. After reading your posts I still don't have a clear view in my mind of what you are trying to do!...

Yes there will be a lot of load on it.

e.g. That doesn't really mean much to me! My idea of a lot of load might be way out compared to yours!

Cheers
Wilbo

[abently]

Okay, now I've got a better idea of what I'm up against.

Just checked, no its not ABS.... its PP (Polypropylene).

merc-blue, what tip/method did you use with the soldering iron ? I tried that previously on some other part and it almost came up trumps, except I don't think I had the method down right to get the best result.

The load will be equivalent to somewhere around 50+kgs of force.