Flame lamination, thermoplastic

The second method of thermal bonding utilizes nets and webs of thermoplastic material this is now challenging flame lamination. Co-extruded nets, where one polymer acts as a cheap carrier for a lower-melting, more expensive polymer, are also available. 

Uses Flame retardant for thermosetting and thermoplastic resin systems, unsat. polyester, rigid and flexible urethane foams, epoxies, PU elastomer wire insulation, laminates, adhesives, coatings, and textiles Features High vise. 

Chem. Descrip. Aluminum hydroxide CAS 21645-51-2 EINECS/ELINCS 244-492-7 Uses Eiller, flame retardant for polyester resins (SMC, BMC, laminates), epoxy and acrylic resins, crosslinked elastomers (conveyor belts, cables, profiles, molded parts), latexes (wall paper, carpetbacking), thermoplastics and thermoplastic elastomers (PP, PE and copolymers, EVA), PVC... 

Spectra Gold Flex is a unidirectional laminate made of four layers of aramid polyamide fibre strips, cross phed and sandwiched in a thermoplastic film. The composite produces ultra-thin vests that are very light and comfortable. They are about 25% lighter than Kevlar or Zylon vests but offer high trauma protection. The tight structure of this composite protects from cuts and slashes and to a degree from stabs. This material also offers flame and heat protection and is able to withstand temperatures of up to 5(X) C. ... 

Uses Flame-retardant resin for elec, potting, encapsulation, and casting, high-pressure laminating, filament winding, and coatings flame retardant for thermoplastics and thermosets... 

Figure 96 Bonding two materials in roll form with a thermoplastic fusible film (XIRO from COLLANO) and reactivating the adhesive film by flame immediately before laminating (by courtesy of Collano Switzerland).

Surface modification techniques these can include such approaches as the laser ablation of the surface using, for example, excimer lasers. Other possibilities are to use plasma, corona and flame treatments to modify the laminate surface, chemically, to make it more amenable to adhesive bonding. As for thermoplastic matrices, it should be possible to introduce highly polar groups onto the surface to improve bonding across the interface. 

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