PUR543S Bonding of upper and lower shells of earphones
PUR543S is a premium PUR adhesive designed for fast positioning and high initial bonding strength, making it ideal for industrial applications. With rapid curing capabilities, it provides excellent adhesion to polar materials such as PC, PC+GF, and PC+ABS, ensuring strong and durable bonds. PUR543S excels in challenging environments, offering outstanding resistance to moisture, heat, acids, and alkalis, making it suitable for use in various conditions. Its high body strength ensures reliability, though it has slightly lower elongation and toughness.
The adhesive is engineered with superior creep resistance, exhibiting deformation of less than 40 microns over 10 hours. Its high viscosity further enhances bonding performance, making it perfect for intricate applications like the bonding of upper and lower shells of earphones, watch middle frames, and lampshades. PUR543S is the ideal choice for manufacturers seeking a high-performance adhesive that combines strength, speed, and resilience.
Features and benefits
- Fast initial positioning and curing speed
- High bonding strength for polar materials (PC, PC+GF, PC+ABS)
- Excellent resistance to moisture, heat, acids, and alkalis
- Superior creep resistance (deformation <40µm in 10h)
- High body strength, slightly low elongation
- Ideal for earphone shells, watch middle frames, and lampshade bonding
Specifications
| PUR543S | Specifications |
| Product type | Polyurethane Hotmelt Adhesive |
| Features | Low allergenicity, high initial strength |
| Viscosity (100℃) | 7000 mpas |
| Open time | 6 mins |
| Shear strength | 8 Mpa |
| Appearance | Milky white light to yellow when solid |
| Typical Application | Bonding of upper and lower shells of earphones Bonding Watch middle frame Bonding Lamp shape parts |
| Product Benefits | 1. Fast initial positioning, fast initial curing speed, high bonding strength for polar materials such as PC, PC+GF, PC+ABS, etc. 2. Excellent resistance to moisture and heat, acid and alkali. 3. Excellent creep resistance, deformation <40um in 10h. 4. High body strength, slightly low elongation, poor toughness; high viscosity |
| Applicable substrate | PC/ABS/Ink glass/Metal, etc. |
| Difficult-to-bond substrates | PP/PA/PPGlass Fiber |
| Curing method | Moisture curing |
| Shelf life | 6 months |
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