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Silicone Manufactoring Pioneers

Merefsa was born in 1966 thanks to the enthusiasm and the entrepreneurial spirit of Senart marriage. After more than 50 years of professional career, with a constant evolution and technological investment, Merefsa is pioneer in the transformation processes of Silicone and PTFE. Thanks to our own manufacturing processes of Silicone and PTFE: mix and additive blend, Silicone extrusion, welding and moulding, die cutting, cutting, laser marking and machining, we can offer to all our customers a wide range of customized solutions, for both large and short series. Our service vocation to the...

Silicone Vinyl Methyl Siloxane Thermal resistance: Excellent performance and stability (from -55˚C up to +225˚C). With different additives and compositions from -90˚C up to +320˚C in dry heat and +150 in contact with steam (moist heat). Atoxicity: Inert material suitable for medical and pharmaceutical use and food contact. Non-porous, hydrophobic surface with low gas permeability. Excellent dielectric properties. Mechanical properties: Low mechanical properties in general terms, which comparatively improves against other elastomers at temperatures above +130˚C. The intrinsic properties of...

Compact Silicone Silicone Sheets Regular Silicone Profiles Calendered Silicone sheets with thicknesses from 0,3 mm up to 20 mm in 1200 mm width and moulded sheets from 1 mm to 40 mm in 500 x 500 mm format. Available in any colour/ formulation and with adhesivation or textile inserts. Also in different dimensions. Square and rectangular Silicone profiles from 1 mm up to 120 mm base and heights from 0,5 mm up to 60 mm. Standard and custom length rolls. Shaped Silicone Profiles Silicone Cords Manufacture of Silicone profiles of any shape under request with drawing or sample according to...

Sponge Silicone Regular Sponge Silicone Profiles Square and rectangular Sponge Silicone profiles from 1,6 mm up to 100 mm either in base or height. Standard and custom length rolls. Sponge Silicone Sheets Sponge Silicone sheets with thicknesses from 1 mm up to 40 mm in 1000 mm standard width and up to 10 m long. Adhesivation and laser marking available. Shaped Sponge Silicone Profile Production of Sponge Silicone profile of any shape under request with drawing or sample according to customer needs. Sponge Silicone Cords Sponge Silicone extruded cords in a wide variety of densities and...

Finished Product Reinforced Silicone Tubes Inflatable Silicone Seals Manufacturing and supply of reinforced Silicone tubes with polyester mesh or fiberglass fabric. Inner diameters from 3 mm up to 50 mm and outer from 8 mm up to 64 mm. Bending radius starting at 30 mm and working pressure from 2 bar to 50 bar. Manufactured with High Mechanical Strength Silicone. Silicone or metal valve available. Moulded Silicone Gaskets Customized gaskets, either from customer drawing or sample. From small series to large number of pieces. In house mould toolshop. Cut and Die-cut Silicone Gaskets Many...

Polytetrafluoretileno Polytetrafluoroethylene (PTFE) is a fluorinated polymer formed by a succession of molecules composed of two fluorine atoms (F) and one Carbon (C) which turns it into an inert and non-sticky material. The fluorine atoms which are in the atomic structure of the PTFE create a practically impenetrable barrier against the attack of other molecules of different chemical composition, preventing their reaction with carbon. The intrinsic properties of PTFE can be modified by the addition of different kind of components. The most common ones are glass, mineral salts (VX1),...

Manufactured Parts Glass Fabric Rolls PTFE Films Available in different thicknesses and adhesive backed, antistatic, porous, chemically treated for one side adhesivation and aramid core. Mesh with size from 1 mm x 1 mm up to 5 mm x 5 mm. Skived film from 0,1 mm up to 4 mm in different widths. Available as adhesive-backed film or chemically treated for one side adhesion. PTFE coated PTFE Sheets Moulded PTFE sheets from 1 mm up to 100 mm thickness. It is possible to mould multicomponent PTFE For thicknesses of more than 3 mm. Belts and Meshes PTFE coated Bands of width up to 3600 mm with...

Manufacturing processes of Silicone and PTFE We have our own machining workshop for moulds, tools and die-cutters to fulfill our needs in the production processes. We have a machine park composed of wire EDM machines, a 4-axis machining center, manual and numerical control lathes and so on, which allows us to offer a very dynamic service with a very short lead time and high-competitive prices. Our wide knowledge and experience in both Silicon and PTFE, allows us to support our customers in the design of new parts from our Technical Office and give them the best solution for new applications...

Quality Control. The last step in order to obtain the unbeatable product. In our laboratory, we analyze and control all the productive processes: Mixture preparation, physical-chemical properties analysis of all our materials and finished-part dimensional control. Our manufacturing process and computer support (ERP) allows us to have a documentary traceability of our products, from the raw material to the finished parts. In Merefsa we monitor the whole manufacturing process and for this reason we can offer an unbeatable quality. HIGH-TECH EQUIPMENT FOR QUALITY CONTROL: Compact OD Rheometer...

© merefsa MEREFSA S.L.U. Av. del Segle XXI, 56 • 08840 Viladecans • Barcelona (Spain) Tel.: 0034 933 372 081 • Fax: 0034 933 374 373 merefsa@merefsa.com www.merefsa.com