Table 1.

Adhesive formulations for the bonding of 3-layer ash plywood (4 mm thickness).

	Casein (%)	Water (%)	Lime (%)	Glue Amount (g/m2)
Epoxy	-	-	-	250
PVAc	-	-	-	150
Casein 1A	27.29	67.13	5.57	600
Casein 1B *	27.29	67.13	5.57	600
Casein 1C	27.29	67.13	5.57	600
Casein 1D	27.29	67.13	5.57	900
Casein 1E	27.29	67.13	5.57	300
Casein 2	20.51	75.30	4.19	600
Casein 3	24.01	59.07	16.92	600

* “Casein 1B” has the same formulation as “Casein 1A”, but was used one hour later after blending.