NATTÉ PES

Product catalog summary

Introduction
Mermet has been a leader in sunscreen fabric production since 1951, focusing on enhancing comfort through sunlight filtering, acoustic improvement, glare reduction, and privacy enhancement. Their commitment is towards user comfort and fabric longevity.

Product Specifications
The NATTÉ PES range features fabrics with densities of 1, 3, 5, and 10, available in colors like Black, Black Bronze, Black Pearl, White Pearl, Pearl, Pearl Linen, Linen, and White Linen. Composed of 29% Polyester and 71% PVC, these fabrics have a Natté 2x2 weave, available in widths of 250-320 cm and roll lengths of 30 lm.

Technical Properties
The fabrics demonstrate high mechanical strength, with breaking strengths over 145 daN/5 cm in warp and 127 daN/5 cm in weft. They comply with fire safety standards, including Class 1 in the EU and FR NFPA 701 in the US.

Processing and Maintenance
Fabrics can be cut using various methods and welded through thermal, high frequency, ultrasonic, hot air, or sewing techniques. Maintenance involves dust removal and cleaning with soapy water.

Performance and Efficiency
Designed for optimal solar and light control, the fabrics are tested for solar transmittance, visible light transmittance, solar absorption, and solar reflection, ensuring thermal and visual comfort as per EN 14501:2021 and ISO 52022-3:2017 standards.

Conclusion
Mermet's NATTÉ PES fabrics provide a cost-effective, adaptable solution for solar protection, emphasizing safety, durability, and user comfort.

Emissivity and Thermal Properties
Low emissivity fabrics help maintain indoor temperatures, reducing energy consumption for heating and cooling by minimizing the sensation of cold in winter and heat in summer.

Acoustic Properties
Standards ISO 354:2003 and ISO 10534-2:2023 measure sound absorption coefficients, evaluating the acoustic absorption potential of materials.

Solar Properties

Solar Reflectance (Rs): Proportion of solar radiation reflected by the fabric.
Solar Transmittance (Ts): Proportion of solar radiation transmitted through the fabric.
Solar Absorptance (As): Proportion of solar radiation absorbed by the fabric.
Solar Factor (gtot): Percentage of solar energy penetrating a room through blinds and glazing, with lower values indicating better thermal performance.

Thermal and optical values are used to evaluate solar protection performance, with comfort levels rated from 0 (very little effect) to 4 (very good effect) according to EN 14501:2021.

Handling and Care Instructions
Fabrics should be handled with care to prevent damage, using gloves to avoid fingerprints. White acrylic-coated fabrics should be handled on clean, dry surfaces, and blinds should be raised during cleaning to prevent chemical exposure.

Storage Conditions
Fabrics should be stored in their original packaging, horizontally, in stable temperature and humidity conditions to prevent color fading and fabric damage.

Warranty
Mermet offers a five-year warranty on most solar shading fabrics, valid under normal use and maintenance conditions as specified in their technical documentation.

Catalog excerpts

The original sunscreen fabric

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THE ORIGINAL SUNSCREEN FABRIC We are Mermet. We are the original sunscreen fabric. Somos Mermet. Los pioneros del tejido de protección solar. Since 1951, our passionate team of experts is on a mission to help create comfortable and pleasant places to work and live in. Desde 1951, nuestro equipo de expertos apasionados por su trabajo se dedica a ofrecer unos lugares confortables y agradables para trabajar y vivir. At Mermet, we create sunscreen fabrics for people, not buildings. Whether you want to filter out the sun or improve acoustics, reduce glare or create more privacy. We always keep the...

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Uniform patterns available in different densities to optimize performance, regardless of building orientation Patrones uniformes disponibles en distintas densidades para optimizar el rendimiento sea cual sea la orientación del edificio COST-EFFECTIVE SOLUTION SOLUCIÓN RENTABLE Budget-friendly fabric option Tejido económico EFFORTLESS HANDLING Lightweight and easy to manage due to its featherweight design Fácil de manejar gracias a su diseño ligero como una pluma Offers a balanced performance in managing glare, maximizing daylight, and maintaining an unobstructed view Ofrece un rendimiento equilibrado...

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LEVEL OF DENSITY NATTÉ PES 5 250 – 320 cm Natté PES 1 00020004 White Linen Natté PES 3 00020004 White Linen Natté PES 5 00020004 White Linen 00070007 Pearl Natté PES 10 00020007 White Pearl

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TECHNICAL DATA CARACTERÍSTICAS TÉCNICAS NATTÉ PES 1 GENERAL FABRIC PROPERTIES PROPIEDADES GENERALES DEL TEJIDO Weighted composition Composición GENERAL FABRIC PROPERTIES PROPIEDADES GENERALES DEL TEJIDO Weaving pattern Patrón de tejido Widths Anchos Roll length (nominal) Longitud del rollo Weighted composition Composición Weaving pattern Patrón de tejido Widths Anchos Roll length (nominal) Longitud del rollo Surface mass (weight) Masa superficial (peso) Surface mass (weight) Masa superficial (peso) Thickness Espesor Thickness Espesor Colour fastness to artificial light (scale of 8) Solidez del...

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THERMAL AND VISUAL PROPERTIES PROPIEDADES TÉRMICAS Y VISUALES EN 14501:2021 - ISO 52022-3:2017 SOLAR HEAT AND LIGHT CONTROL PROPERTIES PROPIEDADES DE CALOR SOLAR Y CONTROL DE LA LUZ Colour (name & code) Color (nombre y código) SOLAR FACTORS (FABRIC + GLAZING) FACTORES SOLARES (TEJIDO + ACRISTALAMIENTO) contact with Glare control class Visual the outside class Clase de control del Clase de contacto deslumbramiento visual con el exterior Efficiency class Clase de eficiencia Efficiency class Clase de eficiencia SOLAR HEAT AND LIGHT CONTROL PROPERTIES PROPIEDADES DE CALOR SOLAR Y CONTROL DE LA LUZ...

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THERMAL FACTORS ÍNDICES TÉRMICOS BASIC PRINCIPLES PRINCIPIOS BÁSICOS Solar radiation is always partially transmitted through, absorbed or reflected by the fabric. The sum of all 3 equals 100. Ts + Rs + As = 100 % of solar energy. Toda radiación solar es en parte transmitida a través del tejido, absorbida o reflejada por el tejido. La suma de las 3 es igual a 100. Ts + Rs + As = 100 % de la energía solar. Thermal and optical values, as defined in the European standard EN 14501:2021 (Blinds and Shutters, Thermal and Visual Comfort, Performance Characteristics and Classification), are used to measure...

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ADVICE AND CARE INSTRUCTIONS HANDLING RECOMMENDATIONS To facilitate the handling of large widths of fabric and to avoid marks on the fabric, Mermet recommends that the panel(s) be rolled on a tube at each stage of the assembly process. Para facilitar la manipulación de tejidos de gran anchura, así como para evitar marcas, Mermet recomienda enrollar los paneles en un tubo en cada etapa de la confección. En el caso de los tejidos con un revestimiento acrílico blanco en el envés, se recomienda manipularlos en una superficie de trabajo limpia, sin polvo y seca. For fabrics with a white acrylic coating...

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