TYVEK® is a series of non-woven fiber products registered and manufactured by DuPont. The material is strong and durable. It is more tear resistant than paper, and more versatile than woven materials. Tyvek is made of flashspun high-density polyethylene (>99%) fibers, lending itself to a wide variety of uses. It combines the property of paper, film and fabrics.TYVEK® is made from high-density polyethylene fibers, formed by a continuous process of very fine 0.5-10 micrometer fibers.
These nondirectional fibers (plexifilaments) are first spun and then bonded together by heat and pressure. TYVEK® is strong, lightweight, soft and smooth, does not fray fibers and particles, antistatic, opaque, water resistance, chemical resistance, scratch resistance, chemically stable, and recyclable.
SUPERIOR MOISTURE RESISTANCE
Tyvek® is an extremely pure environmentally friendly water-resistant material with no post-processing water-resistant coating. This is why the material could retain water-resistant capabilities after extended periods of time while offering excellent windproof capabilities at the same time. Tyvek® offers excellent physical properties with superior moisture resistance capable of meeting the British Standard (BS) 5609 requirements (marine immersion test) while retaining material strength.
Tyvek® is a HDPE (high density polyethylene) material manufactured using patented Dupont technologies. The material has high purity and is not made using any recycled PET bottles or PE plastics. High purity meant that Tyvek® can be recycled as a #2 material (PE category) to create other forms of plastic products.
SUPER LIGHT WEIGHT & STRONG
Tyvek® is composed of continuously interwoven fibers, giving it high strength and anti-tearing properties with only half the weight of a standard sheet of paper (0.38 g/cc). Ultra-thin Tyvek® is even thinner and softer, providing a fabric-like texture as well as low pilling, low linting features in addition to the aforementioned properties.
Different categories of Tyvek® offer resistance to continuous UV exposure ranging from 6 months to 1 year. When subject to continuous UV exposure lasting 1 year or more, physical properties of the product may suffer from certain deterioration. UV resistance may be improved by applying opaque UV protection coating. Products with enhanced UV protection could be utilized in places that require higher degrees of UV resistance.
Tyvek® offers outstanding flexural strength. Pre-scoring material has a folding endurance of over 20,000 folds when tested on an MIT flex tester (using TAPPI T-423 method).
Tyvek® experiences less than 0.01% dimensional changes when relative humidity is increased from 0 to 100% under constant temperature. The product is capable of retaining its strength and flexibility at a temperature of -73℃ (-100 F). Vertical shrinking and deformation would occur when temperature reaches 104℃ (200 F). The material melts at 135℃ (275 F).
Dupont has conducted skin contact toxicity tests for the original form of Tyvek®. As of today, no reports indicating any form of toxicity have been received. When burnt, the material would only generate water vapor and carbon dioxide. No toxic fumes would be produced.
EXCELLENT ROT & MILDEW RESIST.
Tyvek® is resistant against rot or mildew. Unlike other environmentally friendly materials, Tyvek® is extremely stable and would not undergo natural degradation or molding. Tyvek® is also resistant against many chemical agents as well as acidic or alkaline solutions.