Determining an effective solvent for removing hot-melt adhesive from laminate substrate
Date Run:
06/27/2024
Experiment Procedure:
24 strips of laminate were cut such that they were of equal size and were able to fit through the neck of a scintillation vial. Each of these laminate strips were then soiled by melting a single bead of jowatherm 288.60 hot-melt adhesive onto the surface. The coupons were then allowed to soak for 3 hours, with observations being taken every hour. A 1 rating denotes most or complete de-adhesion of the adhesive from the substrate, while a 0 rating means some of or none of the adhesive was de-adhered from the substrate. Once these values were obtained, a HSPiP Solvency sphere was generated to further examine the solubility of the target adhesive.
Trial Results:
Solvent
1 Hr
2 Hrs
3 Hrs
Toluene
1
1
1
Dimethyl Carbonate
0
0
0
Xylenes
1
1
1
Benzyl Alcohol
0
0
0
Ethylene Glycol
0
0
0
Methyl Acetate
0
0
0
Undecane
0
0
0
Ethyl Lactate
0
0
0
Acetone
0
1
1
Ethyl Acetate
0
1
1
Methanol
0
0
0
Ethanol
0
0
0
1,3-Dioxolane
1
1
1
Diethyl Carbonate
0
0
1
1-Propanol
0
0
0
Isopropanol
0
0
0
Propylene Carbonate
0
0
0
Thiophene
1
1
1
1-methoxy-2-propanol
0
0
0
Dimethyl Sulfoxide
0
0
0
1-Butanol
0
0
0
Dimethyl Glutarate
0
0
0
Anisole
1
1
1
2-butoxyethyl acetate
0
0
0
Conklin HSP Sphere
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Toluene, Xylenes, 1,3-Dioxolane, Thiophene, and Anisole were effective at or before the 1 hour mark for de-adhering the adhesive from the laminate. Acetone and Ethyl Acetate were effective at the 2 hour mark, and Diethyl Carbonate was effective at the 3 hour mark. Based on these results, a sphere was generated and the next experiment will utilize solvent blends generated through the solvent optimizer.
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