Polypropylene & Polyethylene Cheap Glue Recommendation?

[bluesmokennoise]

Apparently polypropylene and polyethylene plastic are very difficult plastics to glue and, out of necessity, have had to fabricate some interior pieces on my Pontiac Sunbird.
I give kudos to Pontiac for clearly labeling all plastics they use in their cars. However to match texture and fabricate the pieces I needed to make I had to resort to cutting
apart a plastic tool storage box I found at a thrift shop. The pieces I have fabricated are non-weight-bearing and I have been able to reinforce them with a sheet metal backing riveted through the plastic however I still need to attach some small trim pieces. There are several very easy tests to determine what kind of plastic one is dealing with and this "harvested" tool box
plastic is either polypropylene (PP) or polyethylene (PE). Pouncing on the Internet I quickly learned 2 things: PP and PE plastics are very hard to glue and the glues that will
work are VERY expensive. Most recommended are Loctite 3035, Permabond TA4605, PP3000, 3M DP8005 and DP8010 and a couple others that all cost way more than I can afford ($60++)
Although I avoid buying Chinese products my back is against the wall on this one so I am considering buying such adhesives that claim they work with PP and PE plastic but cost
less than ten bucks per tube. Has anyone used any of the knock off PP and PE glues that are affordable? If so, which one?

 

[melsg5]

Seems like you question is about plastics in general so have you tried Google to find a suitable glue.

 

[bluesmokennoise]

Yes, I've done a lot of lookin' on the Internet. The US-made stuff is pricey but highly recommended. But I can find unknown Asian glues that are vastly cheaper (< $10) but I am wondering if anyone on this august forum has bought any and if they were any good? I've got a box in my workshop containing all sorts of glues and I also tried 'em all just on the chance that one of them would be suitable for "low energy plastic" (which apparently, according to the experts is what PP or PE plastic is); but none bonded. I've got just a small job and need a very small amount (less than half of what you'd put on a toothbrush if you brushed with glue)---but if the Asian stuff is like so many other things they sell us I don't want to spent even $10 on glue that doesn't work.

 

[melsg5]

Yes, I've done a lot of lookin' on the Internet. The US-made stuff is pricey but highly recommended. But I can find unknown Asian glues that are vastly cheaper (< $10) but I am wondering if anyone on this august forum has bought any and if they were any good? I've got a box in my workshop containing all sorts of glues and I also tried 'em all just on the chance that one of them would be suitable for "low energy plastic" (which apparently, according to the experts is what PP or PE plastic is); but none bonded. I've got just a small job and need a very small amount (less than half of what you'd put on a toothbrush if you brushed with glue)---but if the Asian stuff is like so many other things they sell us I don't want to spent even $10 on glue that doesn't work.

I've been on this forum a long time and I believe you are the first to raise a question about plastic glues.

______________________________

 

[bluesmokennoise]

Glue has become so complicated. When I was a kid there were a handful of glues that were all you needed. But I have fabricated
a cubby in the center console of my wife's Sunbird and (if I do say so myself) it turned out pretty well. To match the plastic grey pebbling of the Sunbird's interior I found an empty carrying case for a Dymo label-maker at a thrift store. I cut it up and fashioned what I needed but would like to attach two very slender pieces of trim to hide a gap. I can live without doing that because it still doesn't look bad without the trim but it would really look like a pro job with the trim added. The carrying case is polypropylene so nothing sticks to it. I just need a snot-ball of glue to attach the trim so I am not motivated to throw lot of money into a tube of some high-end stuff that I'll never use again. But what can be better than restoring a car? I feel for the guys whose life is just spent in front of a TV.

 

[bluesmokennoise]

My search has been solved.

My original posting was because I needed to glue some polypropylene/polyethylene plastics in my Pontiac Sunbird. I needed something that would glue PP or PE plastics and my research seemed to indicate that there was nothing on the market unless I wanted to pay $50 to $100 for a small vial of special glue.

By pure happenstance I ended up on the Loctite website and saw they offered a glue and they stated it would glue PP and PE plastics so I figured what the heck? It's a 2-part system but very easy to use and the glue cost was just under $9. I've done two projects with it and they turned out great and the glued joints are strong. Its a clear glue which is also a bonus. So if you need
something to glue "impossible" polypropylene or polyethylene plastics I can vouch for Loctite's 2-part plastcs bonding system.
It's made in Ireland, its UPC is 79340 82565 and its 4 ml and 2g activator and bonder is plenty enough to do a lot. I used mine
and did another project five weeks later and still have a lot left and (unlike many of the over-priced and puny adhesives they're selling now) it didn't crust over a dry out once the containers were opened.

 

[melsg5]

My search has been solved.

My original posting was because I needed to glue some polypropylene/polyethylene plastics in my Pontiac Sunbird. I needed something that would glue PP or PE plastics and my research seemed to indicate that there was nothing on the market unless I wanted to pay $50 to $100 for a small vial of special glue.

By pure happenstance I ended up on the Loctite website and saw they offered a glue and they stated it would glue PP and PE plastics so I figured what the heck? It's a 2-part system but very easy to use and the glue cost was just under $9. I've done two projects with it and they turned out great and the glued joints are strong. Its a clear glue which is also a bonus. So if you need
something to glue "impossible" polypropylene or polyethylene plastics I can vouch for Loctite's 2-part plastcs bonding system.
It's made in Ireland, its UPC is 79340 82565 and its 4 ml and 2g activator and bonder is plenty enough to do a lot. I used mine
and did another project five weeks later and still have a lot left and (unlike many of the over-priced and puny adhesives they're selling now) it didn't crust over a dry out once the containers were opened.

Thanks for the update