Product Description
3M™ Hot Melt Adhesives are 100% solids, thermoplastic resins that become fluid when heated and quickly wet the bonding surface. They cool, harden and reach bond strength in seconds, keeping production flowing by eliminating clamps, fixturing and drying, and saving time energy and space.
3M™ Hot Melt Adhesive 3748 bonds to a wide variety of substrates such as wood, plain and coated corrugated, fabrics and foams, plastics, and other lightweight materials.
Designed especially for low surface energy plastics and coatings such as polyolefins. Good high temperature stability and thermal shock resistance.
Product Features
- 100% solids, no VOCs
- Easy to use
- Adhesive obtains strength in seconds
- Designed for plastics and polyolefin bonding, including ABS, PVC, polycarbonate, polypropylene and polyethylene
Technical Information Note
The following technical information and data should be considered representative or typical only and should not be used for specification purposes.
Typical Physical Properties
Open time is the max time between the application of the adhesive and joining the parts. Data based on 3.2 mm (1/8 in) semicircular bead on non-metallic substrates at 24 °C (75 °F). Higher environmental temperatures and/or larger beads will lengthen open times.
Cleveland Open Cup
Extrusion time for one 25 x 76 mm (1 x 3 in) PG cartridge.
Brookfield Thermocel Viscometer in Centipoise using a #27 Spindle @ 10 RPM.
Typical Performance Characteristics
Recommended application temperature range. Temperature can be adjusted to regulate desired viscosity, delivery rate and pot life.
Highest temperature that the adhesive will support a 14 kPa (2 psi) dead load
Handling/Application Information
Directions for Use
1.Surface Preparation: Surfaces must be clean, dry and dust free. Wipe with a solvent such as isopropyl alcohol for plastic substrates to aid in removing oil and dirt.*
*Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
2.Application: 3M™ Hot Melt Adhesives are designed for application with a 3M™ Hot Melt Applicators. Read and follow the precautions and directions for use in the user’s manual before operating the applicator. 3M™ Hot Melt Adhesives are applied at 350-385°F.
Extruded bead sizes can be customized using 3M™ applicator tips.
3.Coverage: 3M™ Hot Melt Adhesives yield approximately 430 linear feet per pound of adhesive when extruded as a 1/8” diameter semi-circular
4.Set 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.
Industry Specifications
UL 94 - V2
Storage and Shelf Life
Store under normal conditions of 16° to 27°C (60° to 80°F) and 40 to 60% relative humidity in the original packaging, out of direct sunlight. For best performance, use this product within 24 months from date of manufacture.
Available Sizes - Detailed
5/8 in x8 in Q
5/8 in x2 in TC
1 in x3 in PG
Bulk
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
Information
Technical Information: The technical information, guidance, and other statements contained in this document or otherwise provided by 3M are based upon records, tests, or experience that 3M believes to be reliable, but the accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills sufficient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is granted or implied with this information.
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ISO Statement
This product was manufactured under a 3M quality system registered to ISO 9001 standards.