3M Hot-melt glue sticks

== Description ==
[3M, St Paul, MN] A brand name for a thermoplastic adhesive that is applied in the molten state and becomes solid as it quickly cools. Special devices, often sold as glue guns, hold the solid stick while provide heat at the tip to melt the outer section for application.The original 3M brand of Hot-melt Glue Sticks are composed of a copolymer of ethylene vinyl acetate (EVA at 65%) blended with a hydrocarbon resin (terpene-phenol at 30%). Currently many varieties of hot-melt adhesives (HMAs) are available that provide varying melt temperatures, melt viscosities, set-time, surface flow, surface wettability and bond strength.
== Synonyms and Related Terms ==
Hot melt glue sticks; Hot glue; Hot-melt adhesive (HMA)
non-3M products: Maxistick 6300 Hot Melt Glue Stick; Thermogrip® 6363; Evo-Stik® 7702; Bostick #6363
== Product Tables ==
Low melt: 250-270F (121-132C)
Product name 	Composition 	Color 	Moltenodor 	Viscosityat 250F	Opentime	Sizes 	Applications 	Material AnalysisLink 	Sheet links
3M Scotch-Weld 3762 LM	EVA/Hydrogenated hydrocarbon resin/Hydrocarbon resin/Polyolefin wax	light amber	mild resinous odor	4000 CPS 	25 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG1/2”x12”AE	fast tack at low temperature 	4 tests (1993-2019)AIC Oddy test	SDS sheetTech sheet
3M Scotch-Weld 3792 LM	EVA/Hydrocarbon resin/Hydrocarbons/Vinyl acetate (<1%)+B26 	clear 	odorless 	10500 CPS 	40 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG1/2”x12”AE	paper board, coated papers, foams, and plastics	5 tests (2001-2019)AIC Oddy test	SDS sheetTech sheet
Hot melt: 350-385F (177-198C)
Product name 	Composition 	Color 	Moltenodor 	Viscosity at 250F	Opentime	Sizes 	Applications 	Material AnalysisLink 	Sheet links
3M Scotch-Weld 3738	EVA/Hydrocarbon resin/Synthetic rosin resin/Polyolefin wax 	tan 	resinous odor 	2875 CPS 	50 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG1/2”x12”AE	low viscosity, long open time, high flow rate	n/a 	SDS sheetTech Sheet
3M Scotch-Weld 3748	Polypropylene/Hydrocarbon resin/Styrene-Butadiene polymer/Ethylene-Propylene polymer/Polyethylene	off-white	mild resinous odor	5000 CPS 	45 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG 	bonds well to polyolefins; used for Coroplast	1 test (2020)AIC Oddy test 	SDS sheetTech sheet
3M Scotch-Weld 3762	EVA/Hydrocarbon resin/Polyolefin wax 	tan 	odorless 	1875 CPS 	35 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG1/2”x12”AE	wood, cardboard, fast tack, low viscosity 	4 tests (1993-2019)AIC Oddy test	SDS SheetTech sheet
3M Scotch-Weld 3764	EVA/Naphtha polymers/Hydrocarbon resins/Polyethylene polymer/Polyolefin wax/Antioxidant 	clear 	resinous odor 	6000 CPS 	40 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG1/2”x12”AE	plastic to plastic 	3 tests (1996-2020)AIC Oddy test	SDS sheetTech sheet
3M Scotch-Weld 3792	EVA/Hydrocarbon resin 	clear 	pungent resinous 	5000 CPS 	50 sec 	5/8”x8”Q5/8”x2” TC1”x3” PG1/2”x12”AE	bonds dissimilar substrates 	5 tests (2001-2019)AIC Oddy test	SDS sheetTech sheet
== Physical and Chemical Properties ==
* Do not lose volume on cooling
* Do not have any specific disposal requirements 
* May be susceptible to oxidation and UV degradation with age
== Working Properties ==
* Have 2 year long shelf-life; Store below 120 F
* Applied with hot melt applicators, aggressive tack, extremely short open/working time (seconds, not minutes)
== Resources and Citations ==
* AIC Conservation Wiki: Adhesives for Use Inside Exhibit Cases
* 3M Hot-melt adhesives: website
* Wikipedia "Hot-melt adhesives" https://en.wikipedia.org/wiki/Hot-melt_adhesive
* Rachael Perkins Arenstein, Lisa Goldberg, and Eugenie Milroy, ‘Support and Rehousing for Collection Storage’ In ‘Preventive Conservation: Collection Storage’ Lisa Elkin and Christopher A. Norris (eds.), Society for the Preservation of Natural History Collections, New York. 2019. (List for Forms/Sizes) 
Category:Materials databaseCategory:MWGCategory:PACCINCategory:AdhesivesCategory: Adhesive: Hot-meltCategory:Comparisons