3747, 3779, 3789, 3797 Datasheet by 3M

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3Mm Hot Melt Adhesive
3
Hot Melt Adhesive
3747 3779 3789 3797
Technical Data July, 2016
Product Description 3M Hot Melt Adhesives are heat applied, 100% solids adhesives. 3M Hot Melt
3747, 3779, 3789 and 3797 are thermoplastic adhesives to bond to wide variety of
substrates such as wood, plastic, vinyl, metal and glass.
3MHot Melt Adhesive 3747 General purpose adhesive for bonding dissimilar
substrates such as wood to plastic, fabric to metal.
3M Hot Melt Adhesive 3779 High strength bonding with excellent
environmental stability including very high heat
resistance. Fast set time.
3MHot Melt Adhesive 3789 High performance for plastic with good fuel, oil
and plasticizer resistance. Long open time.
3M Hot Melt Adhesive 3797 Low viscosity for fast flow rates, good high
temperature resistance, and fast set. Good for
electrical potting.
Features 100% solids, no VOCs
Easy to use
Long open times allow for easy use on large assemblies and large surfaces
Adhesive sets and obtains strength in seconds
Creates high performance bonds
Ideal for woodworking and general industrial applications.
Typical Physical
Properties Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
3MHot Melt Adhesive
3747
3779
3789
3797
Color (solid)
Tan
Amber
Brown
Off-White
Density (g/cm3)
0.97
0.99
0.95
0.92
Flashpoint (°F)1
509
550
>392
570
(1) Determined by Cleveland Open Cup ASTM D 92-72.
Directions for
Use 1. Surface Preparation: Surfaces must be clean, dry and dust free. Wipe with a solvent
such as isopropyl alcohol for plastic, metal and glass substrates to remove oil and dirt.*
*Note: When using solvents, extinguish all ignition sources, including pilot lights, and
follow the manufacturers precautions and directions for use.
2. Application: 3M Hot Melt Adhesives are designed for application with a 3MHot
Melt Applicators. Read and follow the precautions and directions for use in the users
manual before operating the applicator. 3M Hot Melt Adhesives are applied at 350-
385°F. Adhesives yield approximately 430 linear feet per pound of adhesive when
extruded as a 1/8diameter semi-circular bead. Extruded bead sizes can be customized
using 3M applicator tips.
3MTM Hot Melt Adhesive 3Mm Hot Melt Adhesive
3M Hot Melt Adhesive
3747 • 3779 3789 • 3797
Directions for
Use (continued)
3. Coverage: 3M Hot Melt Adhesives yield approximately 430 linear feet per pound
of adhesive when extruded as a 1/8diameter semi-circular bead.
4. Set up time: After the bond is made, 3M Hot Melt Adhesives immediately build
strength and no clamping is necessary. Set will occur faster on cold or metallic
substrates.
Typical
Application
Properties
Note: The following technical information and data should be considered representative or
typical only and should not be used for specification purposes.
3747
3779
3789
3797
Application
Temperature1
350-385°F/
177-196°C
350-385°F/
177-196°C
350-385°F/
177-196°C
350-385°F/
177-196°C
Viscosity (CPS)2
4,100 @
375°F
7,000 @
375°F
5,200 @
375°F
2,650 @
375°F
Open Time
(seconds)3
45
25
50
30
Delivery Time
(seconds)4
45
75
70
55
Available
sizes/forms
5/8”x8” Q
5/8”x2” TC
1”x3” PG
1/2”x12” AE
5/8”x8” Q
5/8”x2” TC
1”x3” PG
1/8” Bulk
5/8”x8” Q
1”x3” PG
1/8” Bulk
5/8”x2” TC
1”x3” PG
(1) Recommended application temperature range. Temperature can be adjusted to regulate desired
viscosity, delivery rate and pot life.
(2) Brookfield Thermocel Viscometer in Centipoise using a #27 Spindle @ 10 RPM.
(3) Open time is the maximum time between the application of the adhesive and when the parts
must be joined together. Data based on 1/8" semicircular bead on non-metallic substrates at 7F.
Higher environmental temperatures and/or larger beads will lengthen open times.
(4) Extrusion time for one 1x3” PG cartridge.
Typical
Performance
Properties
Note: The following technical information and data should be considered representative or
typical only and should not be used for specification purposes.
3MHot Melt Adhesive
3747
3779
3789
3797
Heat Resistance1
145°F/ 63°C
300°F/ 149°C
220°F/ 104°C
170°F/ 77°C
Ball & Ring Melt
Point2
220°F/ 104°C
325°F/ 163°C
270°F/ 132°C
304°F/ 151°C
Shear Strength3
430 psi
700 psi
570 psi
350 psi
Peel Strength4
20 piw
18 piw
16 piw
10 piw
UL94 Listing
n/a
V0
V2
V2
FDA Indirect
Food Contact5
21 CFR
175.105
21 CFR
175.105
21 CFR
175.105
21 CFR
175.105
(1) Highest temperature that the adhesive will support a 2 psi dead load
(2) ASTM E28-67
(3) Overlap shear measured on Douglas Fir to Douglas Fir
(4) Measured in pounds per inch width (piw). Flexible canvas bonded to Douglas Fir
(5) Permitted for indirect food contact subject to the limitations in applicable CFR section(s).
m Adhs \es
3M Hot Melt Adhesive
3747 • 3779 3789 • 3797
Storage Store product below 120°F (49°C).
Shelf Life When stored at the recommended conditions, this product has a shelf life of 2 years
after 3M ships the product to a customer or distributor.
Precautionary
Information
Refer to Product Label and Material Safety Data Sheet for health and safety information before using this
product. For additional health and safety information, call 1-800-364-3577 or (651) 737-6501
Product Use All statements, technical information and recommendations contained in this document are based upon
tests or experience that 3M believes are reliable. How ever, many factors beyond 3Ms control can affect
the use and performance of a 3M product in a particular application, including the conditions under
w hich the product is used and the time and environmental conditions in w hich the product is expected to
perform. Since these factors are uniquely within the users know ledge and control, it is essential that the
user evaluate the 3M product to determine w hether it is fit for a particular purpose and suitable for the
users method of application.
Warranty and
Limited Remedy
Unless stated otherwise in 3Ms product literature, packaging inserts or product packaging for individual
products, 3M w arrants that each 3M product meets the applicable specifications at the time 3M ships the
product. Individual products may have additional or different warranties as stated on product literature,
package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF
DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining whether the 3M product
is fit for a particular purpose and suitable for users application. If the 3M product is defective within the
warranty period, your exclusive remedy and 3Ms and sellers sole obligation w ill be, at 3Ms option, to
replace the product or refund the purchase price.
Limitation of Liability
3
Except w here prohibited by law, 3M and seller w ill not be liable for any loss or damage arising from the
3M product, w hether direct, indirect, special, incidental or consequential, regardless of the legal theory
asserted, including w arranty, contract, negligence or strict liability.
ISO 9001: 2000
This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 standards.
Industrial Adhesives and Tapes Division
3M Center, Building 225-3S-06
St. Paul, MN 55144-1000
800-362-3550 • 877-369-2923 (Fax)
www.3M.com/Adhesives
3M is a trademark of 3M. Printed in U.S.A.
©3M 2016

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