3M
™
Scotch-Weld
™
Hot Melt Bonding Systems
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2
3
Assembly
1
&
packaging
Reference guide
Speed and versatility
for applications success
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Applications Success with 3M
™
Scotch-Weld
™
Hot Melt Adhesives
5
Application Success:
Do 3M
™
Scotch-Weld
™
Hot Melt Adhesives offer the best options
for success with your assembly and/or closure application?
Answers to the following questions can help you decide.
Would you like to improve your production speed and ease?
3M
™
Scotch-Weld
™
Hot Melt Adhesives liquefy when heated
and quickly fill gaps and wet the bonding surface. Applied to only
one surface, they cool, harden, and reach bond strength in
seconds. You can move assemblies immediately and eliminate
clamps, fixturing, and drying time and energy. Each adhesive
is engineered for efficient application with an easy-to-use 3M
portable applicator. Minimal operator training.
Would you like to improve appearance?
Unlike mechanical fasteners and sealing tapes, hot melt
adhesive is virtually invisible between the mating surfaces.
What surfaces do you want to combine?
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As you can see on pages 4 and 5, you can combine a wide variety
of materials ranging from wood to corrugated cardboard, and
even heat-sensitive foam.
How much strength do you need?
Select from a wide range of non-structural shear and peel
strengths as shown on page 7. Structural strength has been
defined as a minimum of 1,000 psi in overlap shear to
permanently bond load-bearing components. Hot melt
non-structural applications range from case sealing to bonding
wood stiffeners to drawer bottoms, and securing components
on a PC board.
What is the temperature in the end use environment?
Hot melts are 100% solids thermoplastic resins that can
re-melt after bonding if exposed to high enough temperature.
As you can see on page 7, there are many options for selecting
melt point and heat resistance for your specific application.
Do you need to reposition parts or delay assembly after
adhesive application?
Open time or bonding range is the maximum time between
applying adhesive and joining the surfaces. The more quickly
you join surfaces, the better the wetting action and bond. With
3M
™
Scotch-Weld
™
Hot Melt Adhesives you have wide latitude
in bonding range selection as shown on page 7.
Electronics
and Electrical
• Easily secure wires to resist strain and breakage
• Rigidize components on printed circuit boards to add
stability during assembly, shipping and end use
• Quick setting for potting even at great depth
• Terminate coils
• Cable strain relief
• Bundle wires for convenient handling
Go to
adhesives
3748VO: Light yellow, non-corrosive to
copper, self extinguishing
3779:
Amber, high heat resistance,
high strength
Off-white, non-corrosive to
copper
Clear, bonds HSE/LSE plastics
Off-white, good for potting
Alternatives
3748:
3764:
3797:
Application Success:
Application Success:
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Adhesive
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Point-of-Purchase,
Displays, Trade Exhibits
• Bond foam spacers into 3-dimensional corrugated
cardboard POP display
• Attach samples of wood flooring, laminates, foams, fabric,
or other materials and small products to display board
• Attach decorations to baskets
• Assemble dried floral arrangements
• Bond polystyrene foam and other materials used in
counter top displays, jewelry cases, and exhibitor booths
Manual and Corrugated
Carton Sealing
• Bond and seal any size and configuration of corrugated
carton quickly and invisibly including RSCs, FOLs, and
5-panel folded
• Securely bond lightly waxed surfaces that may be
difficult for tape to seal
• Attach inserts including heat-sensitive foam
• Self-contained portable applicator saves the cost of bulk
equipment for recouperage, manual random size case
sealing, and many contract packaging situations
Go to
adhesives
3762LM: Light amber, fast-setting, low
melt for heat sensitive surfaces
3792LM: Clear, multi-purpose low melt
for heat sensitive surfaces
Go to
adhesives
3762:
Economical, tan, fast-setting
with “hot tack”
3762LM: Light amber, low melt version
of 3762
Alternatives
3738:
3750:
3764:
Tan with high delivery rate,
longer open time than 3762
Tan, low viscosity for high flow
Clear, stays flexible at low temp
Alternatives
3748:
Off-white, bonds polyolefins
3755LM: Clear, delayed tack, applied as
ribbon for paper, corrugated
3764:
2
Clear, bonds HSE/LSE plastics
Application Success:
Application Success:
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Furniture and
Woodworking
• Wood to wood assembly of non-structural components in
home and office furniture and cabinetry
• “Third-hand” holding components while structural wood
adhesive cures
• Bond fabric to wood for welting and gimping
• Secure drawer bottoms, guides, and stiffeners
• Attach upholstery to wood and plastic
• Assemble decorative crown moldings
Product
Assembly
• Bond metal or plastic nameplates to trophies
• Assemble or repair foundry sand cores
• Attach removable credit cards or samples to mailers
• Quick easy assembly of many materials in luggage and
carrying cases
• Assemble many materials used in novelties, toys, games,
and costumes
• Attach speaker fabric or protective metal grille
Go to
adhesives
3792:
Clear, multi-purpose for wood,
fabric, and upholstery
Go to
adhesives
3764:
Clear, bonds HSE/LSE plastics,
flexible at low temp
3792LM: Low melt version of 3792 for
heat sensitive surfaces
Alternatives
3738:
3747:
3789:
Tan, high delivery rate
Tan, bonds variety of wood,
plastics, and lightweight metal
Brown, impact resistant
3792LM: Clear, multi-purpose low melt
for heat sensitive surfaces
Alternatives
3748:
3796:
Off-white, resists thermal
shock, bonds polyolefins
Tan, hi-performance on thin metal
3798LM: Clear removable “gummy glue”
3
Substrate Combinations
for Applications Success
Substrate
Wood
Wood
Thin Metal
Glass or
ceramic
3747
3764
3796
3747
3796
3747
3764
3796
3792LM
Vinyl
Leather
Polyolefin*
3747
3789
3738
3776LM
3762LM
3792LM
3750LM
3747
3796
3776LM
3789
3779
3796
3796
3796
N/R
3789
3779
3796
3796
3796
N/R
3731
3748
3764
6111
1
3796
3764
3748
3796
3792LM
Thin Metal
Glass or
ceramic
Vinyl
3747
3796
3776LM
3776LM
3792LM
N/R
N/R
N/R
N/R
N/R
3792LM
3789
3779
3796
N/R
3789
3779
3796
3789
3779
3796
N/R
N/R
Leather
N/R
3796
N/R
Polyolefin*
3731
3748
3764
6111
1
3792LM
Plastic**
Paper
Uncoated
cardboard/
chipboard
Coated
cardboard/
chipboard
Fabric
Rigid
foam***
Flexible
foam
Low melt adhesives
* E.g., polyethylene
** E.g., ABS, PVC, acrylic
*** Beadboard/styrene
6111 is a family of products that includes 6111, 6111HT, and 6116.
Removable
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Must be sprayed on rigid foam to prevent cavitation.
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