Greyboard from PPI is a versatile and interesting product which can be found in many convenience goods, a material with almost unlimited fields of application. The special hardboards of PPI convince due to their excellent fibre composite. This guarantees high durability, good elasticity and optimal consistency. The shankboards as well as the grey and fibreboards of PPI are distinguished for their excellent working properties for milling and punching along with tensile strength, structural stability, best bonding with other materials, heel pin holding strength and very good creasing ability.
APO-Shankboards from PPI fulfill the highest requirements. They are particularly suitable for insoles of low heel height and for waists of medium to high heels.