3M Hi-Tack Composite Spray Adhesive 71T
Technical Data Sheet March 2019
Product Description:
A high tack, resin compatible mist spray aerosol adhesive for resin infused composite applications.
Key Features:
Securely bonds many lightweight materials used in resin infused composites. Such as glass
fiber, carbon fiber, nylon fibers, peel ply & transfer mesh.
Meets CARB / OTC VOC Requirements.
Compatible with resins used in composite manufacture, including epoxy, vinyl ester & polyester
resins.
Does not impede resin flow.
Typical Properties:
Note: The following technical information and data should be considered representative or typical only and should not be used for specification
purposes.
Product Property 3M Hi Tack 71 – Aerosol 3M Hi Tack 71-Cylinder
Base Acrylic Based Acrylic Based
Solids Content – (by wt.): 19 to 20% by wt 19% by wt
Net Weight / Container 18.0 oz / 511 g 30 lbs / 66 Kg
Density (lbs/gal):
6.6 lbs/gallon; 790
grams/liter
6.5 lbs/gallon; 760
grams/liter
Color(s): Translucent or Yellow Green Translucent or Yellow Green
Volatile Organic
Compounds:
<25% <25%
CARB / OTC Compliant: Yes Yes
Coverage @ 10 gram / m
2
99 square feet; 10 square
meters Per Aerosol Can
2550 square feet; 250 square
meters Per Cylinder
Spray Pattern: Mist/Particulate Mist/Particulate
Dry Time: 15 to 60 seconds 15 to 60 seconds
Bonding Range: Up to 20 minutes Up to 20 minutes
Shear Adhesion Failure Test -
SAFT
(1)
:
205
o
F 96
o
C 205
o
F 96
o
C
Flammable Solvent: Yes Yes
Flammable Propellant: Yes Yes
Test Descriptions:
(1)
SAFT Shear Adhesion Failure Test with birch plywood, 1 inch overlap, 100 grams used, temperature start at 90F and ramped 10F every 10
minute until complete failure.
3M Hi-Tack Composite Spray Adhesive 71T
Technical Data Sheet March 2019
Directions for Use:
Aerosol Can: Preparation: For best results, all surfaces to be bonded must be clean, dry, and free from dirt, dust, oil, loose
paint, wax or grease, etc. Working Temperature: The adhesive and surfaces to be bonded should be at 65 F (18 C) or above.
Hold can perpendicular 8 to 12 ; 180 mm to 250mm from the substrate to be sprayed. Typical woven fiberglass materials only
need 1 dry gram / square foot to hold up to 6 layers vertically. Overhead or more difficult materials may need an application to both
materials. More adhesive may be needed depending on number of layers, configuration and nature of materials. For example the
transfer mesh may need more adhesive to avoid edge curl. One Surface Bonding: Tack range 10 seconds to 15 minutes.
Two Surface Bonding: For more permanent or demanding applications spray both surfaces. Allow minimum 30 seconds drying.
Tack range 1 to 30 minutes.
Cylinder: Preparation: For best results, all surfaces to be bonded must be clean, dry, and free from dirt, dust, oil, loose paint,
wax or grease, etc. Working Temperature: The adhesive and surfaces to be bonded should be at 65 F (18 C) or above.
Connections: Attach larger end of hose to the spray applicator and use a wrench to tighten securely. With the applicator fully
locked against the trigger, attach the smaller hose end to cylinder valve. Use a wrench to tighten securely. Use only 3M standard
cylinder spray applicator. Recommended nozzle is 650050 for widest spray pattern. Alternatively, nozzle 2500250 for narrower
spray pattern. Hose lengths come in 6 , 12 & 25 . (see table below)
Application: Shake before use if cylinder has been inactive over one month. Slowly open the cylinder valve and inspect
connections for leakage. Fully open cylinder valve. Unscrew trigger stop 3-4 turns. Test spray pattern. Adjust trigger stop as
needed to vary output. Hold applicator 10 to12 inches from surfaces to be bonded. Keep applicator square to the surface. Move
applicator at steady speed. Best results obtained by applying even amount to the bonded area. 1 or 2 coats to one surface may be
needed depending on substrate texture or performance requirements. Alternatively, apply an application to both surfaces. Allow
the adhesive to dry until tacky without transfer to touch. Overhead or more difficult materials may need an application to both
materials. More adhesive may be needed depending on number of layers, configuration and nature of materials. For example, the
transfer mesh may need more adhesive to avoid edge curl.
One Surface Bonding: Tack range 10 seconds to 15 minutes.
Two Surface Bonding: For more permanent or demanding applications spray both surfaces. Allow minimum 30 seconds drying.
Tack range 1 to 30 minutes.
Shut Down: Tighten trigger stop to lock trigger. Close valve on cylinder. Replace nozzle. Do not disconnect hoses until pressure in
cylinder is completely depleted. Hose and applicator can be transferred to new cylinder.
Clean Up: Cylinder applicators, hoses, spray tips and excess adhesive can be cleaned with 3M Adhesive Remover.
Note: Extinguish ignition sources when handling solvents.
Application:
The color indicator adhesive is recommended when possible to minimize the amount of adhesive necessary. Only a slight
indication of green is needed to bond most materials. See photo for approximate appearance on fiberglass fabric:
Green color indicator image (not enough, just right, too much)
3M Hi-Tack Composite Spray Adhesive 71T
Technical Data Sheet March 2019
Hi Tack Adhesive 71 is formulated to be compatible with the resins used in the manufacturing of vacuum infused composite
parts. Chart 1. Compares the effects Hi Tack 71 on the strength of a polyester infused composite.
Product Information:
3M Hi-Tack Composite Spray Adhesive 71
Product: 3M Product Number Color Net Weight
Aerosol Can
62-4876-4930-2 Green 18.0 oz / 511 g
62-4865-4930-6 Clear 18.0 oz / 511 g
Cylinder
US 62-4866-8031-7
INTL 62-4866-8030-9
Green 30 lbs / 66 Kg
US 62-4854-8031-2
INTL 62-4864-8030-4
Clear 30 lbs / 66 Kg
Cylinder Accessories
Spray Applicator Nozzles / 3M # Hoses / 3M#
650050 62-9880-8173-
3
6 Foot 62-9880-0006-3
Regular 62-9880-9930-
5
12 Foot 62-9880-0012-1
250050 62-9880-
8133-7
25 Foot 62-9880-0025-3
0
10
20
30
40
50
60
Hi Tack 71 Competitor A Competitor B
Stiffness of Composite (MPa)
Adhesive Chosen to Bond 4 Glass Scrim Layers
Chart 1. Composite Stiffness Dependence on Adhesive Choice
Polyester Resin Infused Composite -Short Beam 3 Pt Bend*
Control - No Adhesive; Flat Shapes only
Minimum Amount of Adhesive Needed to Hold Fabric Vertically - 4 grams/square meter
*Test Method: GE A50WE039 -4 Layers Vectroply Glass Fabric; Altek Polyester Resin
3M Hi-Tack Composite Spray Adhesive 71T
Technical Data Sheet March 2019
Storage Store product at 60
o
-80
o
F (16
o
-27
o
C) for maximum storage life. Higher temperatures reduce normal
storage life. Lower temperatures may cause increased viscosity of a temporary nature. Rotate stock on a first in-first out
basis.
Shelf Life When stored at the recommended conditions in original, unopened container, this product
has a shelf life if 15 months from date of manufacture.
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.
Technical Information The technical information, recommendations and other statements contained in this
document are based upon testes or experience that 3M believes are reliable, but the accuracy
or completeness of such information is not guaranteed.
Product Use Many factors beyond 3M s control and uniquely within user s knowledge and control can
affect the use and performance of a 3M product in a particular application. Given the
variety of factors that can affect the use and performance of a 3M product, user is solely
responsible for evaluating the 3M product and determining whether it is fit for a particular
purpose and suitable for user s method of application.
Warranty, Unless an additional warranty is specifically stated on the applicable 3M product packaging
Limited Remedy, or product literature, 3M warrants that each 3M product meets the applicable 3M product
and Disclaimer specification at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES
OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR
CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOMER OR USAGE
OF TRADE. If the 3M product does not conform to this warranty, then the sole and
exclusive remedy is, at 3M s option, replacement of the 3M product or refund of the
purchase price.
Limitation of Liability Except where prohibited by law, 3M will not be liable for any loss or damage arising from the
3M product, whether direct, indirect, special, incidental or consequential, regardless of the
legal theory asserted, including warranty, contract, negligence or strict liability.
ISO 9001
This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 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/lowvocaerosols 3M is a trademark of 3M Company. @3M 2019