Kolenkor (from the name of the fabric Kolenkor ) is a binding material on a fabric basis with a special coating layer.
Usually made of unpainted or pre-dyed cotton fabric ( calico ) by applying a starch - kaolin layer with pigment ( sizing ). This layer conceals the texture of the fabric, gives it rigidity and gloss, makes the surface more susceptible to foil stamping and printing with screen and binding inks.
Prior to the spreading of waterproof varnishes, glue for bookbinding could penetrate the front side of the binding cover covered with a kenkor, as a result of which cracks quickly appear on this binding due to the low breaking strength.
The “Modern” type kenkor binding, which appeared at the end of the 19th century, has a latex coating layer, which is significantly more durable for fracture and water resistant.
Now water resistance and abrasion resistance are further increased by covering the calico with a transparent layer of nitrocellulose varnish .
See also
- Calico
Sources
- Kolenkor // Publishing dictionary-reference: [electron. ed.] / A.E. Milchin . - 3rd ed., Rev. and add. - M .: OLMA-Press, 2006.
- Bookbinding materials // Great Soviet Encyclopedia : [30 t.] / Ch. ed. A.M. Prokhorov . - 3rd ed. - M .: Soviet Encyclopedia, 1969-1978.
- (inaccessible link - history )