Brand: 3M™
Product Number: 3748
Technology: Hot Melt Adhesive
Color: Tan
Form: Solid (Stick)
Cure Type: Thermoplastic (Hot Melt)
Package Sizes:
Shelf Life: 24 months
Product Description
3M™ Hot Melt Adhesive 3748 is a tough, flexible thermoplastic adhesive designed for bonding a wide variety of substrates, including wood, plain and coated corrugated materials, fabrics, foams, and plastics. It is especially formulated for bonding low surface energy plastics and coatings, such as polyolefins. This adhesive offers high-temperature stability and thermal shock resistance, making it suitable for applications subject to temperature fluctuations.
Key Features
Recommended Applications
Technical Data
Typical Physical Properties
| Property | Value |
|---|---|
| Color | Tan |
| Density | 0.93 g/cm³ (0.034 lb/in³) |
| Viscosity | 5,000 cP at 191°C (375°F)¹ |
| Open Time | Approximately 45 seconds² |
| Flash Point | 280°C (536°F)³ |
¹ Measured using Brookfield Thermocel Viscometer with a #27 Spindle at 10 RPM.
² Open time is the maximum time between adhesive application and joining parts, based on a 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.
³ Determined using the Cleveland Open Cup method.
Typical Performance Characteristics
| Test Method | Substrate | Value |
|---|---|---|
| 180° Peel Adhesion | Flexible canvas bonded to Douglas Fir | 32 N/cm (290 oz/in) |
| Overlap Shear Strength | Douglas Fir | 1.7 MPa (250 lb/in²) |
| Ball & Ring Melt Point | ASTM E28-67 | 144°C (292°F) |
Application Characteristics
| Property | Value |
|---|---|
| Application Temperature | 177 – 196°C (350 – 385°F)¹ |
| Temperature Resistance | 79°C (175°F)² |
¹ Recommended application temperature range. Temperature can be adjusted to regulate desired viscosity, delivery rate, and pot life.
² Highest temperature that the adhesive will support a 14 kPa (2 psi) dead load.
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As the year draws to a close and the Christmas season arrives, Avantek Viet Nam would like to extend our warmest Christmas greetings to all our valued customers, partners, and friends.
Avantek Viet Nam is a dynamic MRO, direct materials and equipment supplier that brings advanced technological solutions to maximize satisfaction of customers.
We are expert in import and export of adhesives, accessories and equipment in both domestic and cosmetic industrial fields, production and technology research and development.
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