Machteld Paree
Senior Application Scientist, Synthomer
Machteld Paree has experience in the adhesives industry for over 40 years in a wide range of applications.
She started her career in 1984 and had several positions in the technology space within Hercules and Eastman Chemical.
Currently she is working as a Senior Application Scientist for Synthomer adhesives, specifically in the field of tackifying resins and polyolefinic polymers. She is the technical expert and partner for a number of strategic and major accounts in Europe.
A Polyolefin Copolymer with High Adhesion and Cohesion Imparting Superior Performance in Hygiene Construction
The largest bonded area in a hygiene article is the chassis region, and today the demand for high performing hot melt adhesives (HMA) is increasing in this application. A real challenge exists in achieving a high cohesive strength HMA while maintaining sufficient adhesion over the life cycle of the product. Although a hygiene article such as an adult incontinence or femcare product or a baby diaper is a consumable product, it requires durable traits for the consumer. The end user exerts high levels of static shear stresses on the article during use. The nonwoven and polyethylene materials in the hygiene article are adhered together by a very thin layer of HMA coating, and good cohesion is often a trade-off with sustained adhesion. The new polyolefin-based copolymers are designed to resolve this challenge for well-balanced performance.
At the body temperature, adhesive strength begins to weaken almost immediately to a point where the bond between the low surface energy (LSE) materials is insufficient. Reconciling high cohesion and sustained high adhesion upon ageing on LSE materials at low coat weights is the solution offered by Synthomer. At Synthomer, we developed a Ziegler-Natta catalyzed PP-PE random copolymer that when combined with tackifier produced a well-balanced, high-performing hot melt adhesive. The HMA produced can be both slot die coated and spray applied. Polyolefin HMA formulation strategy and HMA application data for the slot die-coated HMA is shared.
Breakout XII – Trends in Hotmelt Adhesives – 12 September 2025 – 11:30 – 12:00 – Room 2