Polyurethane and silicon compounds are used in wide variety of applications in the processes of sealing, bonding and potting/encapsulation. Thermal resistance, type of substrate, operating pressures, weathering, radiation and chemical resistance, dielectric properties, environmental compatibility, water-repellent surface and low moisture uptake are some of the important factors to consider when selecting the type of sealant and adhesive. Customised and wide varieties of products are available to suit specific process requirements. Polyurethane and Silicon compounds for in-situ applications are typically supplied as a one-component or a two-component-system. In the case of two-component polyurethane and silicon systems, components are delivered in two separate packages and typically one is called A component and the second one is called B component.

Contaminants such as oil, grease, drawing and releasing agents, plasticizers, etc. must be removed with suitable cleaning agents before dispensing process.In some applications, in order to improve adhesion properties of the substrate, it may be necessary or advisable to treat the surface before the adhesive/sealant is dispensed. There is a wide range of surface treatment methods available for mechanical, chemical and physical treatments such as primer application, surface roughening, flame treatment, plasma treatment etc. If a surface treatment is necessary in an application, we combine our dispensing solution with the suitable equipment to facilitate the required surface treatment function.

Foam Gasket Materials for Sealing and Gasketing Applications

	Thixotropic Foam Gaskets (FIPFG: Formed-In-Place-Foam-Gasket): High-thixotropic gasket system is suitable for three dimensional surfaces. With its thixotropic properties, it is ideal for workparts with level and inclined surfaces.
	Liquid Foam Gaskets (FIPFG: Formed-In-Place-Foam-Gasket): Liquid foam gasket systemis produced in a range of flow properties and self-levelling to fill gaps and grooves.
	Compact Gaskets (FIPG: Formed-In-Place-Gasket): Compact gaskets are dispensed in place to produce unfoamed gaskets.

Adhesives for Bonding/Gluing Applications 

Adhesive bonding is an alternative technique in manufacturing processes to reduce or eliminate the requirement for conventional joining methods such as welding, bolting and riveting. A layer of adhesive bonding compound is applied to connect substrates of different parts. It simplifies manufacturing operations, reduces cost and increases safety and efficiency.

Encapsulants for Potting/Encapsulation Applications

Electronic and electrical components partially orcompletely covered in potting/encapsulation processes with one or two component resins such as epoxy, silicone or polyurethane for protection against moisture, dirt, oil or chemicals in the environment,  shock and vibration. Potting/encapsulation is performed at atmospheric pressure or under vacuum pressure for void-free production.

In potting process, electronic and electrical components are located in a plastic or a metal enclosure and the resin material is poured over it. Capacitors, transformers, PCB’s, cable joints, electronic filters, LED’s, power supplies, sensors, batteries, automotive electronic devices are some of the potting application examples.

In encapsulation process, electronic and electrical devices are located in a mold and the resin material poured over it. After releasing from the mould, a resilient cast is created. PCB’s, Cast Transformers CT and VT, capacitors, connectors, LED’s are some of the encapsulation application examples.

We collaborate with Frechem GmbH & Co. KG to meet our customers’ demands combining best in class solutions in our fields. Frechem is specialized in developing and manufacturing polyurethane and silicon compounds for sealing, bonding and potting/encapsulating applications. With the optimum integration of chemicals and process, our customers have a full advantage of system guarantee. Working together at planning, design, sample production, system configuration stages ensures our products and services leverage each other. Successful implementations of our solutions enable our customers to realize and maximize the value of their investments. 

Frechem FrechFoam® Foam Gasket Materials

Properties FrechFoam® Temperature resistance Chemical resistance Hardness Flame-retardant Elongation to break Tensile strength Elongation to tear UV resistance Low emissions Low water absorption Compression set

FrechFoam® products consist of two-component polyurethane foam – flexible systems for sealing foam applications, semi-rigid systems as integral foam, and rigid foams for insulation and cladding. FrechFoam is ideal for applications requiring long life and durability, and will not lose any of its high-quality properties if exposed to the usual fluids. FrechFoam® comes in a wide range of products for indoor and outdoor use in protecting against heat and moisture also sealing functional components, or as insulation. The sealing system protects your products from dirt, dust and moisture. The FrechFoam excellent mechanical qualities make it ideal for high protection classes due to its low water absorption and antibacterial effects, while effective UV resistance ensures a high level of functionality at FrechFoam® sealing foams. Varied and individual curing time, viscosity and flow behaviour qualities give you fast automatic processing for a wide variety of surfaces and complex geometries. FrechFoam® is seamlessly applied IN-SITU according to requirements without any need for thermal treatment.

Properties FrechFill® Coefficient of thermal expansion Thermal stability Chemical resistance Flow resistance Dielectric strength Shore hardness Thermal conductivity Mixed viscosity Flame-retardant Elongation to break Colour

Extremely elastic, various degrees of hardness, clear and UV-stable – FrechFill® casting resin is ideal for a wide variety of applications and adjustable concerning your process requirements. Frechem encapsulants ensure high resistance against a wide range of influences. FrechFill® protects your application‘s characteristics and functionality from thermal, chemical and mechanical stress. FrechFill encapsulants' high degree of impact resistance absorbs a wide range of mechanical forces and protecting your components. Frechem innovative potting systems reinforce your components and protect your Know-How. FrechFill® makes processing simple and fast, even in complex application areas, ensuring cost-effective, high-quality processing when applied manually or using dosing equipment.

Frechem FrechBond® Adhesives

Properties FrechBond® Adhesion Elasticity Shrinkage Hydrolytic stability Curing time Strength Chemical resistance Flame retardant

Large surfaces, structural unevenness or mechanical damage – FrechBond® glues and repairs a whole variety of materials in plastic, metal, glass or wood. FrechBond® gives you the ultimate quick fix, making it ideal for industrial applications. The prepolymers used in FrechBond® range, give the ideal base materials adapted to your requirements for your adhesive. FrechBond® products‘ versatile properties are ideal for industrial surfaces and components of any type whether uniform or mixed materials, FrechBond® keeps it all together. Permanently! Adhesives are only as good as their process reliability in one-off and series production applications. The FrechBond® is characterised by its simple and user-friendly application, whether manual or automated. Simple application, fast postprocessing and flexible finishing all make for an effective work process, saving you valuable time and money.