PA - polyamide is high-strength and impact-resistant. Its abrasion and wear resistance combined with excellent sliding properties make it a preferred construction material in machine or vehicle construction. Because of its high mechanical strength, it has now even displaced many metal components in vehicle construction - sometimes reinforced with carbon or glass fibres. But PA is not easy to bond. High bond strengths of PA materials require the use of special pre-treatment methods or specially developed, reactive adhesives. Further information. Most foams are produced by means of foam extrusion: the heated plastic expands to 20 to 50 times its volume as it flows out of a perforated nozzle. Rotating knives then cut the resulting foam strands into closed-cell foam particles of a few millimetres in size, from which various products are formed. The term sponge rubber is mainly used to describe open-cell and elastic foams that have a closed, leak-proof outer skin. These are expanded by adding blowing gases made of natural rubber, chloroprene, acrylonitrile-butadiene rubber or similar synthetic rubbers and are classified as porous rubbers. During vulcanisation, the blowing agent inflates the compound and gives the thermoplastic elastomer permanent elasticity. Sponge rubber is generally considered to have poor to hardly any adhesion. Depending on the second material, only individual, special adhesives are available that enable usable bonding. Adhesions of sponge rubber to certain plastics such as polyolefins (polyethylene, polypropylene) or rubber are particularly critical. Further information.

But structural damage to the new CFRP aircraft can now also be repaired by bonding: Lufthansa Technik has developed a new type of repair method here as part of the "Rapid Repair" research project: A milling robot cleanly mills out the damaged area (on a wing, for example) and a precisely fitting repair part is inserted with an adhesive film. Under vacuum and using a heating mat, the repair patch hardens and can be repainted. Afterwards there will be no more visible signs of the repair. Advantage: No holes need to be drilled which could destroy the sensitive fibre structure. POM (polyoxymethylene) is one of the most commonly used thermoplastics worldwide. It's valued for its high impact resistance, strength, hardness and rigidity. Due to its low coefficient of friction, high heat deformation resistance, excellent sliding and abrasion behaviour in combination with low coefficients of friction, the material is often used as an engineering plastic - primarily for precision parts such as gears, shafts, switch gears, etc. The high recovery elasticity of polyoxymethylene makes the plastic useful for applications in the field of snap-fit connections. SBR (styrene-butadiene rubber) is the most widely used synthetic rubber today and is used in the production of tyres, seals and conveyor belts.ABS - acrylonitrile-butadiene-styrene is an everyday plastic that is widely used today because of its surface hardness, high impact strength and good resistance to weathering, ageing and chemicals. Unfortunately, the low-energy ABS cannot be glued completely without problems with common adhesives and usually this is only possible after a surface treatment with the solvent methyl isobutyl ketone. However, ABS with ABS can also be bonded with methyl ethyl ketone (MEK) / butanone and dichloromethane (methylene chloride). Optimum procedure: Clean bonding surfaces, dry. Apply one coat of adhesive to one or both sides and allow to flash off briefly before pressing together. Further information. PMMA (polymethyl methacrylate) has intertwined polymer chains. It's very weather-resistant and can be used as a substitute for glass. Optical lenses and spectacle lenses, glazing, lamps and sanitary parts are made from PMMA. It's indispensable in dentistry, where it's used for dentures. For this purpose, the plastic is dyed with metal salts to create the typical pink colour. The applications are manifold. For example, PMMA can be used for polymer concrete, glazing, lenses, optical fibres, bathtubs, light covers and adhesives.

The bonding and gluing of plastics is very common in a wide range of industrial processes and products. Bonding can be achieved by applying chemicals such as epoxies and plastic agents that bond by evaporation of a solvent or by curing a bonding agent with heat, pressure or time. POM thermoplastics are resistant to diluted alkalis or acids (pH > 4) as well as halogenated, aromatic and aliphatic hydrocarbons, oils and alcohols. When selecting an adhesive, one should consider what the bond must be able to withstand and what stresses the component will be exposed to in use. These are the questions about mechanical, dynamic and static loads, the temperature range, the influence of moisture, other chemical substances or UV radiation. At the same time, the list of requirements should include information on the parts to be joined, the production conditions, specifications for occupational safety and environmental protection, information on long-term resistance and quality assurance, as well as the selected test procedures and costs.

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EPDM (ethylene propylene diene rubber) is used for sealing profiles. In contrast to NBR, EPDM has very good electrical insulation properties, excellent resistance to ozone and sunlight, and outstanding resistance to ageing. immediately (working time is approximately 5 min.). Remove any excess Plastic Weld immediately. 7. CURE