Industry Overview
The hot melt adhesive industry relies on tackifier resins that enhance adhesion, tack and cohesion in EVA-, SIS- and SBS-based formulations.
Velrez hydrocarbon resins play a key role in improving wetting, open time, thermal stability and polymer compatibility, ensuring reliable performance in packaging, hygiene and industrial adhesives.
Role of Hydrocarbon Resins in This Industry
Hydrocarbon resins are used in HMAs because they provide:
- Higher initial tack and improved bond strength
- Better compatibility with SIS, SBS, EVA and APAO polymers
- Improved wetting on paper, films and nonwovens
- Controlled open and set time
- Enhanced heat resistance and oxidative stability
- Stable viscosity during processing
Key Benefits for This Industry
- Reliable tackifying performance for EVA, SIS and SBS systems
- Improved adhesion to porous and non-porous substrates
- Consistent melt viscosity and processing stability
- Low odor and low color (hydrogenated grades)
- Options for hygiene, packaging and technical HMAs
Recommended Resin Types
For hot melt adhesives, the following Velrez resin families are typically used:
- C5 Aliphatic Resins – tackifying, compatibility with SIS/SBS
- Hydrogenated C5 Resins – low color, excellent stability
- C5/C9 Modified Resins – balanced adhesion and cohesion
- Hydrogenated C9 Resins – clarity, compatibility and heat resistance
- Partly or fully hydrogenated grades for premium HMA applications
Recommended Velrez Grades
(Selected based on suitability for EVA, SIS, SBS, HMA & PSA formulations.)
| Grade | Type | Softening Point | Key Benefit | Typical Use |
| Velrez W5Z6-100 | Hydrogenated C5 | 95–105°C | stable tack & low odor | SIS/SBS hot melts |
| Velrez W9Z4-100 | Partly Hydrogenated C5 | 95–105°C | balanced color & performance | EVA & rubber HMAs |
| Velrez W9Z2-100 | Fully Hydrogenated C5 | 96–105°C | premium clarity & stability | hygiene adhesives |
| Velrez 9HZ4-100 | C5/C9 Modified | 95–105°C | stronger adhesion | HM & SB adhesives |
| Velrez 9HZ4-120 | C5/C9 Modified | 115–125°C | improved cohesion | high-performance HMAs |
(Additional grades can be added for PSA or specialty systems.)
How Mardan Supports the Industry
Mardan BV provides:
- Technical guidance to select the right tackifier for SIS, SBS, EVA and APAO systems
- Reliable supply through Velrez manufacturing partnerships
- Support with viscosity stability, adhesion testing and formulation trials
- A complete portfolio for HMAs, PSAs, coatings, inks, rubber and bitumen