Primer 9627M is suitable as primer in the bonding of leather with polyurethane adhesive. It improves noticeably the tear strength of weak leather and is fit for use in combination with the one-component PU adhesive 9627 DM. The combination Primer 9627M + 9627 DM set up a quite one component system for high temperature and hydrolysis resistance bonding of leather, fabric, plasticized PVC, PU, halogenated TR and vulcanized rubber. Primer 9627M is suitable for sticking by direct injection PVC andTPU to roughed leather and fabrics.
Composition : polyurethane resin in water dispersion.
Mode of setting : by water evaporation and reaction with an incorporated crosslinker.
Colour : dispersion is white, turning transparent when drying.
Solvents : solventless adhesive.
Solid content : 48 – 50 %
Ph : neutral
Method of use
Preparation of the sole
- Leather soles: rough deeply
Preparation of the upper
- Leather upper: rough deeply. The product is not suitable for leather highly greased leather.
Application: apply an even coat on the surface to be primed, by a brush or other device for water based adesive.
Drying time: drying time noticeably depends on the room temperature and humidity as well as on the porosity of substrate and on the amount of adhesive.