I was thinking the same thing. The requirement of being clear with low application temperature limits the options.
Tom Quinn
Adherent Laboratories
www.adherentlabs.com
Much depends on the application. How much bond strength do you need? Low/high temp resistance? Solvent resistance? Are the substrates thin films, sheets? How do you test for bond strength? Will you be making a thousand units/minute? Hand application?
Tom Quinn
Adherent Laboratories...
I passed this on to one of my colleagues at Adherent who has more experience in this area than I. Here are his comments:
"A couple of thoughts. For the butyl try a structural 2 part acrylic like the Permabond TA4200 series or 3M also has a number of these. The other thought is to switch from...
A lot is going to depend on what kind of tolerance you can accept with the spacing after reactivation. Much will also depend on the bond requirements. Do you have peel strength requirements? Heat resistance? Solvent/water resistance? How much flexibility do you need? How many layers...
These are typically blends of S(EB)S block copolymer rubbers and oil. The surface tack is increased by adding a high Tg tackifier. I would expect a "glue-dot" like composition, which would contain perhaps 20-30% tackifier, would have too much adhesion for your application. You'd likely need...
Most HM PSA's will be soft enough at 100C that they'll creep without much stress. Waxy hot melts would have enough heat resistance to hold up at that temperature, but I'd worry about adhesion to Tyvek and metal. With most hot melts the kinds of things you do to make them adhere to non-porus...
Yes, this is confounding. It should work. Maybe the EAA is neutralized, or maybe it has a contaminant coating.
Regards,
Tom Quinn
Adherent Laboratories
www.adherentlabs.com
I believe the insect strips are often coated with very viscous polybutene or polyisobutylene. BASF makes them or you could find them via Goggle.
Regards,
Tom Quinn
Adherent Laboratories
www.adherentlabs.com
HM PSA's are used a lot to seal Tyvek envelopes and they adhere well by virture of their softness and pressure sensitive character. However, their softness and pressure sensitivity work against you if the bond is under any stress or elevated temperatures.
How do you want to apply the adhesive...
Dave,
You need to determine if you are having adhesive or cohesive failure. Is there adhesive residue on both substrates after failure at 150F? If so, you are having a heat resistance problem and need a higher Mw or x-linked adhesive. If one of the substrates is clean, you need to improve...
Hot melt glue sticks are readily available, easy to apply, and should adhere reasonably well to your PP. However, they may not remove as easily as you want. BTW, HM glue sticks are almost never PP based. PE and EVA are more common.
There are varieties of "palletizing adheisves" that are used...
