Bookbinding

Ethylene Copolymer based hot-melts are widely used in bookbinding, depending on application these formulas will be pigmented (white). For this application key parameters to take into account for technical analysis are: Viscosity (depends on application technology) : typically between 2000 mPa.s to 5000 mPa.s at application temperature (145-180°C) Open time : between 5 seconds to 10 seconds Setting Time : 1 to 2 seconds Good flexibility at low temperature Good Creep resistance at high temperature No stringing Good cuttability Bookbinding hot-melts have to fullfil very demanding technical requirements, ie. good performances both at low and high temperatures. This is generally obtained through the use of different grades of polymers (long and short chains) and a blend of grades of tackifiers and waxes to achieve adhesion and application requirements.