There are many different types of membrane to choose from and care must be taken to ensure that comparisons are being made. The material's role in the structure's integrity and performance makes the selection process especially important. This is particularly true of tensile structures since their membranes, as well as their framework, carry the loads. Membrane Materials Most tensile structures utilize fabrics rather than meshes or films. The fabrics are typically coated, and/or laminated with, synthetic materials for greater strength and environmental resistance. The most widely used materials are woven polyester cloths coated with polyvinyl chloride (PVC), and woven fiberglass coated with either polytetrafluoroethylene (PTFE) or silicone. For more detailed introduction for each common used fabrics, please choose from above.

PVC coated Polyester materials; the polyester base cloth is durable, strong and relatively low cost.The polyester base cloths are more usually coated with PVC to give the fabric color, strength and waterproof properties. The PVC coating also allows adjoining panels of fabric to be seamed by high frequency welding.

Abbreviation of the Polyvinyl Fluoride. This is a film-layer that is laminated to the PVC fabric during manufacture. This results in a thicker finished fabric that is more resistant than its competitors to weather and chemical attack. It has superior self-cleaning capabilities than the PVDF range of topcoatings and will resist attack from graffiti, acid rain and bird droppings.

Abbreviation of Polyvinylidene Fluoride, which is made of 59% fluorine, 38% carbon and 3% hydrogen. The compatibility of the carbon and fluorine is such that it offers a resistance to UV degradation and atmospheric chemical attack. PVDF topcoats also offer resistance to algae and fungal attack. They have good self-cleaning properties and therefore need less maintenance. These properties combine to give a membrane a lifespan of 15 to 20 years.

PVDF (modification): The so-called modified PVDF membrane is means to add one special additive on its topcoats, thus to enhance the self-cleaning property and be welded directly. Meantime, this additive will in synergistic reaction with the PVC layer to firmly combine PVDF and PVC, hard come off and no need to coat the base layer.

PTFE coated fiberglass fabric PTFE glass fabric is a frequently specified material due to its life expectancy of 30 years, depending on conditions. The PTFE or Teflon coating is also non-combustible. These coatings are very inert and have a low coefficient of adhesion that gives PTFE good self-cleaning ability. In the finished fabric however the self-cleaning ability is slightly diminished by the grainy surface of the membrane under tension, providing small indentations in which airborne solids can accumulate. The glass scrim combined with the bleached coating results in a fabric with good light transmittance. These properties contribute to its high cost and to the need for additional tensioning hardware for the finished fabric structure. The tensioning of PTFE glass fabric is a slow process, as it requires incremental adjustment over long periods of time on site. This factor also contributes to its higher cost.

Abbreviation of Ethylene Tetrafluoroethylene, a fluorocarbon-based polymer, which is a durable, adaptable plastic. ETFE provides excellent resistance to attack by the chemicals and solvents and also it has excellent mechanical strength, stiffness, and abrasion resistance.

This commonly used finish is also the most economical and most widely available. It is a thin, spray-applied solution that gives a transparent glossy finish to the PVC. The acrylic coatings have a good resistance to UV degradation. The thinness of the coating application means that this material is easy to fabricate and repair by high frequency or hot air welding. Acrylic topcoats give the material a ten-year lifespan depending on the ambient climatic conditions and air quality at the site where it is installed. Acrylic topcoats are ideal for fabrics that are used for temporary structures and demountable structures such as marquees, circus tents, lorry sidecurtains, rock concert venues and warehouses. dar

Any color is available on request, our standard color is: White translucent (usually used for roof sections for maximum natural daylight trans mission, darker color for bottom section which near the foundation, because we consider to the dirty resistant)

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