Laminated Viewtek Composite Peelable Shims Brochure
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Laminated Viewtek Composite Peelable Shims Brochure
Product catalog summary
Introduction: Alkomposit Viewtek® is a bi-composed laminated peelable shim made from polyethylene terephthalate (polyester) films. It is designed for applications requiring insulation and lightweight properties across a wide temperature range.
Specifications: The shim offers electrical insulation, chemical resistance, flexibility, and easy peeling. It features a patented marking process for easy identification of film thickness (0.025 - 0.1mm) using color codes. The shim is highly resistant to temperatures from -70°C to +220°C and prevents contact corrosion.
Advantages: Key benefits include low density (50% of aluminum), thin layers (0.025 to 0.1mm), tool-free separation, and reusability of peeled layers. It can function as a damper or vibration filter and is safe to use with minimal risk of cuts.
Applications: Alkomposit® M is suitable for electrical insulation applications, replacing machined or ground metal shims. The Viewtek® process simplifies shim adjustment by marking thickness directly on the surface.
Physical Properties: The shim exhibits a tensile strength of 200 MPa, density of 1.395 g/cm³, and a melting point of 253-255°C. It has a low friction coefficient and excellent thermal properties.
Chemical Properties: The shim shows high resistance to various chemicals, including glacial acetic acid, hydrochloric acid, and ethanol. It has low permeability to gases like carbon dioxide and nitrogen.
Electrical Properties: It offers a dielectric strength of 6400 volts and high volumetric and surface resistivity, making it suitable for electrical applications.
Time and Cost Savings: The use of peelable shims reduces the need for machining, offering time savings of over 50%. It allows for relaxed machining tolerances, reducing costs while maintaining precision.
Shapes and Customization: The shims can be cut or machined into various flat geometric shapes. Multi-part shims are available for larger dimensions, and special structures or additional materials can be incorporated.
Note: Jicey® reserves the right to modify specifications for quality improvement without prior notice.
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Catalog excerpts
Property Characteristicvalue Unit TestMethod > Tensile strength at 25C- machine direction - 200 MPa ASTM D882-80 > Density at 25аC 1.395 g/cm > 3 ASTM D1505-66 > (Kinetic) friction coefficient at 25C Refractive index (AB 8E at 25аC) 1.64 nD25 ASTM D542-50 > Hygroscopic expansion coefficient 1.0 x 10 > -5 mm/mm% RH > Melting point 253-255 C ASTM D3418-82 > Shrinkage, 150аC, 30mnmachine direction cross direction 1.51.2 % % ASTM D1204-78 > Linear thermal expansioncoefficient 1.7 x 10 > -5 cm/cm/C ASTM D696-44 > Specific heat, 25C 1.32 J/g/аC > Thermal conductivity 0.15 W/mK Slowly self-extinguishing...
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.