PVC, ABS, acrylic glass / Plexiglas® (PMMA), PE, PP, polyurethane (PUR), Makrolon® (polycarbonate), rubber (EPDM)
Plastics are synthetically produced polymers. They are offered in a great variety of forms as for example films, sheets, panels, injection-moulded parts or pre-shaped components. In the carpenter's or joiner's workshop, plastic materials are especially used as design elements for shop fitting, exhibition stand construction and interior finishing work – often in the form of transparent or coloured plastic sheets or panels. Less often, also pieces of furniture are produced from plastic panels, e.g. for use in medical environments.
Design element, can be processed more easily than glass, unbreakable, hygienic
Plastics like PE and PP can only difficultly be bonded due to their high surface tension. When bonding smaller areas, cyanoacrylates are the right choice. It is, however, not recommended to bond large surface areas.
Plastics like PVC, ABS and PUR in combination with absorbent materials like wood or wood-based materials can be bonded with a PUR adhesive. Before applying the adhesive, it is absolutely necessary to carefully clean and degrease the plastic surface. Sanding the surface can increase the bonding strength. Plastic profiles such as corner beads, cover fillets or fitting strips can be bonded to absorbent and non-absorbent surfaces with a suitable assembly adhesive (e.g. Pattex PL 300). When bonding two plastic materials with each other over a large surface, make sure to use a 2-component adhesive. It is also possible to use a suitable 1-component assembly adhesive if there is enough distance between the single beads to ensure the adhesive can absorb the required moisture for curing. The adhesive layer must have a minimum thickness of 1 mm.
Plastics like PMMA (Plexiglas®/acrylic glass) and polycarbonates (Makrolon®) are difficult to bond. Often, the manufacturers of these plastic products also offer suitable adhesives for bonding. When bonding acrylic or plexiglass surfaces with each other, these special adhesives should be used. If necessary (e.g. in a groove), acrylic glass can be bonded to wood or wood-based materials using a suitable silicone. However, the user should carry our preliminary bonding tests.
Wood-based materials consist of chipped wood. They are produced from veneers of different thickness, wood slats, wood shavings or wood fibres from different wood species. By adding binders to the particles or by bonding veneers with wood slats, chipboards or pre-shaped parts are produced in an industrial process that uses pressure and heat. The admixture of additives can change the properties of the material – for instance increase the water resistance or improve the fire behaviour.