Polypropylene

[+linuxxpert]

Hello,

 

I was wondering if anybody know what kind of adhesive will stick to Polypropylene, you know the kind of plastic pill bottles, etc. are made out of? I have tried a few different kinds of epoxies but that just seems to pop right off. I am looking to stick things to this plastic, like magnets, rocks, etc. and it needs to withstand the elements of course.

 

Thank you!

[+PoqFFEMT]

This stuff works great!

 

http://www.vobaker.com/adhesive/double.htm

 

I've never had it fail on anything I've used it on.

Edited September 29, 2008 by PoqFFEMT

[+CBT69]

have you looked at PC7?

 

I really shouldn't give you advice on this, as it will just lead to an even MORE evil cache, I'm sure.

[+linuxxpert]

I really shouldn't give you advice on this, as it will just lead to an even MORE evil cache, I'm sure.

ME?! Never....

[+linuxxpert]

Double post..

Edited September 30, 2008 by linuxxpert

[+bubby23]

Quite often roughing the surface before you apply the epoxy will help with adhesion. Try 80 grit sand paper or maybe a nail file.

[+briansnat]

How about using the tape they put on the spines of CDs. That stuff doesn't come off anything.

[+Kohavis]

Duco cement, "527" cement, or any cement with MEK (methyl ethyl ketone)or acetone in it should work. Also, PVC cement (used commonly in plumbing) should work too

[+sbell111]

Rough up teh container and then glue it using Goop.

[+fox-and-the-hound]

Try GorillaGlue. That stuff will even stick on chrome!!

[CacheNCarryMA]

If you're gluing a magnet to the outside, whatever method you use, glue another magnet, in the same manner, to the inside of the container to hold it in place. Neodynium magnets are the best small magnets.

[knowschad]

According to 3M, their 3M High Strength 90 Spray Adhesive: bonds polypropylene.

 

Glue magnets to the inside (if glue is even needed).

 

If you want to use rigid or semi-rigid adhesives like epoxies, drill some small holes through the plastic first. The epoxy will fill the holes and form a bulge on the inside, creating a mechanical bond (think, "epoxy rivet")

[+Guinness70]

-//- drill some small holes through the plastic first -//- (think, "epoxy rivet")

duely noted. clever!

 

epoxy rivet epoxy rivet epoxy rivet epoxy rivet epoxy rivet epoxy rivet epoxy rivet epoxy rivet

 

 

soz, couldnt resist

Edited September 30, 2008 by Guinness70

[+sbell111]

According to 3M, their 3M High Strength 90 Spray Adhesive: bonds polypropylene.

 

Glue magnets to the inside (if glue is even needed).

 

If you want to use rigid or semi-rigid adhesives like epoxies, drill some small holes through the plastic first. The epoxy will fill the holes and form a bulge on the inside, creating a mechanical bond (think, "epoxy rivet")

Just be aware that doing so will eventually cause water to enter through the hole.

[knowschad]

According to 3M, their 3M High Strength 90 Spray Adhesive: bonds polypropylene.

 

Glue magnets to the inside (if glue is even needed).

 

If you want to use rigid or semi-rigid adhesives like epoxies, drill some small holes through the plastic first. The epoxy will fill the holes and form a bulge on the inside, creating a mechanical bond (think, "epoxy rivet")

Just be aware that doing so will eventually cause water to enter through the hole.

 

Not in my experience. I've had caches out for a couple of years that were done that way.

[+sbell111]

According to 3M, their 3M High Strength 90 Spray Adhesive: bonds polypropylene.

 

Glue magnets to the inside (if glue is even needed).

 

If you want to use rigid or semi-rigid adhesives like epoxies, drill some small holes through the plastic first. The epoxy will fill the holes and form a bulge on the inside, creating a mechanical bond (think, "epoxy rivet")

Just be aware that doing so will eventually cause water to enter through the hole.

 

Not in my experience. I've had caches out for a couple of years that were done that way.

Whatever.

[+Dryphter]

Whatever.

 

 

What's the matter sbell - don't believe someone had a different experience than you?

 

Too funny

[+goonybird]

Hello,

 

I was wondering if anybody know what kind of adhesive will stick to Polypropylene, you know the kind of plastic pill bottles, etc. are made out of? I have tried a few different kinds of epoxies but that just seems to pop right off. I am looking to stick things to this plastic, like magnets, rocks, etc. and it needs to withstand the elements of course.

 

Thank you!

 

If you can figure out what kind of adhesive is used on the labels pharmacies use on the prescription bottles, you should be good to go. I have no clue what it is though, but it sure as hell sticks to plastic pill bottles.

[+jerpete]

I used to work in a materials test lab for an aircraft manufacturer and scotch weld 8005 or Bondit 45th are the only two adhesives I've found that will effectively bond polypro to a substrate. Both are expensive ($25-$60 for 2oz cartridge) with the Bondit being better in harsh environments.

 

When I did the testing both required a gun and mixing tips, but you may be able to squeeze the entire contents of a cartridge and mix it by hand.

 

I'd try the epoxy rivet method myself.

[+jerpete]

I used to work in a materials test lab for an aircraft manufacturer and scotch weld 8005 or Bondit 45th are the only two adhesives I've found that will effectively bond polypro to a substrate. Both are expensive ($25-$60 for 2oz cartridge) with the Bondit being better in harsh environments.

 

When I did the testing both required a gun and mixing tips, but you may be able to squeeze the entire contents of a cartridge and mix it by hand.

 

I'd try the epoxy rivet method myself.

[+sbell111]

Whatever.

 

 

What's the matter sbell - don't believe someone had a different experience than you?

 

Too funny

I simply realized that anyone who would argue that this method would work long term would be unwilling to listen to an explanation of why it was doomed to failure. To save my time, I decided not to have the conversation.

 

Anyone who really wants to pursue the issue can simply do a forum search.

Edited October 1, 2008 by sbell111

[John E Cache]

Hello,

 

I was wondering if anybody know what kind of adhesive will stick to Polypropylene, you know the kind of plastic pill bottles, etc. are made out of? I have tried a few different kinds of epoxies but that just seems to pop right off. I am looking to stick things to this plastic, like magnets, rocks, etc. and it needs to withstand the elements of course.

 

Thank you!

The Grey 3M acrylic molding tape used for attaching plastic trim to cars is really strong.

 

I bought mine at the local CarQuest parts store. The Napa guy said they don't sell the tape because 3M recommends a spray adhesive, which coincidentally, Napa Auto Parts sells.