Thermal Calender Bonding for Nonwoven Laminates
topic
Thermal calender lamination bonds nonwoven fabrics to films, foams, or other textiles by passing the combined substrate stack through heated calender rolls at temperatures above the melting point of the thermoplastic component at nip pressures of 20 to 60 Newtons per millimetre, creating melt bonds at the contact interface between layers without adhesive application, producing composites for hygiene backsheets, insulation, and packaging through bicomponent or thermoplastic film thermal bonding.
Role
Produces bonded composite materials for hygiene and technical applications through the direct thermal fusion of thermoplastic components at the substrate interface, with calender temperature and pressure governing the depth and area of melt bonding that determines composite peel strength, with thermal calender lamination providing the simplest and most economical bonding method for hygiene product construction where thermoplastic component availability and high production speed requirements justify its selection over adhesive lamination alternatives.