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Plastic Adhesives
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Author:  PeteB [ Mon Jun 23, 2014 11:37 am ]
Post subject:  Plastic Adhesives

Has anybody discovered a good adhesive for plastic bins? :roll:
This stuff works fairly well [link], but only as a crack filler. It sticks pretty well to aged plastic, but new plastic needs to be roughened with sandpaper.

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Author:  Jerry [ Mon Jun 23, 2014 12:14 pm ]
Post subject:  Re: Plasic Adhesives

Peter, I think the best all around adhesive for most plastics is hot melt glue. It is still probably a good idea to roughen the surface first. Hot glue sets up very quickly so there's a learning curve for applying it. I have a glue gun that has two temperature settings which comes in handy sometimes.

Author:  PeteB [ Mon Jun 23, 2014 12:21 pm ]
Post subject:  Re: Plasic Adhesives

Thanks Jerry, I'll go and buy a glue gun .... :D

Author:  Jerry [ Mon Jun 23, 2014 1:01 pm ]
Post subject:  Re: Plastic Adhesives

Once I starting using hot glue I wondered how I ever got along without it. ;)

Author:  Jerry [ Mon Jun 23, 2014 4:04 pm ]
Post subject:  Re: Plastic Adhesives

Peter, I tested a lip-type larva barrier recently using hot glue. I couldn't pull it off as hard as I tried. The adhesives have been the downfall of both lip and Velcro barriers, but the hot glue discovery might sway me towards a lip style barrier. I hope to begin testing one in a working unit soon.

Author:  Jerry [ Tue Jun 24, 2014 2:19 pm ]
Post subject:  Re: Plastic Adhesives

I recently did a test of a lip-type larva barrier using hot glue with one of my polyethylene boxes. I used a piece for the lip that was made of the same material. For one test I glued the piece without roughing it up with sandpaper. It was a strong bond, but I was able to pull it apart with some effort. Next I roughed both surfaces with coarse sandpaper and that bond was so strong that I couldn't pull it apart at first. The only way I could separate it was to work at one of the corners, and even then it took a lot of strength. When you rough the surfaces it creates a lot of tiny "hairs", which I suppose melt into the glue, fusing the two pieces together. :D

Author:  PeteB [ Thu Jun 26, 2014 3:50 am ]
Post subject:  Re: Plastic Adhesives

Okay, here's a corner in one of my bins. As we know, a grub has only one pupose in life, and that's to chew through barriers.
It's going to be interesting to see what they make of the hot melt glue. :lol:

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Author:  PeteB [ Mon Mar 30, 2015 6:01 am ]
Post subject:  Re: Plastic Adhesives

Sorry to say, but hot melt glue is a utterly useless.
I really wanted it to work, and I tried every trick in the book, but it simply does not last!
Besides that, the glue melts (haha) when the bin gets hot.
The trusty glue gun has been relegated, and it's only used to make cardboard boxes.
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Author:  CookiesDaddy [ Tue Mar 31, 2015 1:59 am ]
Post subject:  Re: Plastic Adhesives

I tried the regular hot glue stick in my bin last year and it failed miserably. Then I bought the high temperature hot glue stick and it worked like a champ. Not sure if it will work for you, but this is what I used:

http://www.amazon.com/Ad-Tech-11ZIP24-1 ... ds=11ZIP24

It's not cheap, but has come in handy in many projects. FWIW.

Author:  Jerry [ Fri Apr 03, 2015 11:05 am ]
Post subject:  Re: Plastic Adhesives

Hi Peter,

Not all hot glues or glue guns are created equal. I've been working with a hot glue specifically designed for polypropylene which is the plastic used to make the totes I use. It's important to use a very hot setting with these glues.

https://www.gluegunsdirect.com/shop/glue-sticks-glue/application/bonding-polypropylene

In the states look for AdTech 501 glue sticks.

Even with the glue above, bonding low density plastics is a challenge.

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