Hot-melt glues are thermoplastic adhesives which are solid at room temperature.
The gluing process occurs via the product fusion. Once in the user, it melts and it is applied through a roller, a nozzle or a slot applicator. The process ends by gluing the two materials which eventually get pressed. When the product cools down, you obtain the gluing you desired.
Depending on the raw materials, thermoplastic adhesives are divided into three main categories:
– EVA based: Easy-to-use traditional hot-melt adhesives mainly used for edging and wood veneer, paper and laminated wood coating. Their heat resistance is around 80°C.
- Polyolefin based: Hot-melt adhesives mainly used for paper and wood veneer coating or edging. They have a better resistance to heat compared to EVA based adhesives, up to 110° – 130°C.
- PUR based: Polyurethane hot-melt adhesives used for edging, edge production, wooden floor production and panel lamination. Unlike the previous ones, once the gluing process is over when they cool down, PUR hot-melt adhesives keep gluing chemically by reacting to the humidity of the environment as well as the one of the glued materials, causing the cross-linking of resins molecules. Thanks to this chemical process, they have excellent heat resistance (over 150°C), as well as solvent and water resistance. In order to be used, they need specific machinery.
CO.VI.COL. offers a complete range of certified products, designed according to the client’s requirements.
Edging, frame coating, softforming, assembly, flat lamination.
- Hot Melt EVA adhesives
- High heat-resistance Hot Melt EVA adhesives
- Hot Melt EVA adhesives sticks and for Holz-her
- Polyolefin based Hot Melt adhesives
- Polyamide based Hot Melt adhesives
- Customised Hot Melt adhesives
- Polyurethane Hot Melt adhesives