Examples of waterproof permeable membranes and applications

What is a waterproof permeable film?
Waterproof permeable air film is the mid-1970s, duPont company in the United States was the first to apply to the construction field, a new type of vapor-permeable polymer waterproof material, it can be used for the building enclosing system insulation layer outside, barrier wind and rain on the building erosion, reduce the loss of convex heat caused by air leakage, but also allow the water vapor in the enclosed structure to discharge, reduce the risk of condensation and condensation in the building.
Tweqiang® waterproof permeable film, is 100% high density polyethylene as the raw material, the use of flash steaming technology (a transient spinning microfiber meshing method) treatment of ultra-fine fiber three-dimensional interwoven adhesive molding non-woven fabric.
permeable membrane under a microscope
In 1955, DuPont researchers discovered a new fiber, and in 1965 it created a sheet structure that was both our Tweeden ® waterproof permeable film, which was launched in 1967 and was mainly used in protective clothing, medical packaging, protective covers, etc. . In 1978 DuPont introduced the first building waterproof permeable film, in 2006, in order to meet the more stringent building energy-saving needs, Tweeden ® introduced a new generation of reflective waterproof permeable film and vapor film, in 2009, in order to achieve the best air tightness, DuPont introduced a series of matching tape, in 2012, Tweeden ® fire-resistant waterproof permeable film surface city.
Tweqiang® waterproof permeable film with natural vapor permeability and water-weariness, is a unique nonwoven technology material, which has the following
characteristics
:
flashing technology (a transient spinning super-spinning) Fine fiber meshing method)
fiber diameter is generally between 0.1 to 10 m
100% high density polyethylene (recyclable) environmentally friendly material
unique fiber structure makes it windproof, waterproof and steam-permeable
high strength And excellent dimensional stability
light and tough, soft and smooth, wear-resistant
adhesive-free, non-needle, excellent anti-aging performance
excellent resistance to high and low temperature performance
2005 Tweed strong® waterproof permeable film and The diaphragm became the first manufacturer of ce-mark for the entire product system series, and in 2012 Tweeden ® waterproof permeable vapor film and diaphragm obtained the certification of BBA roofing and wall system, and in 2014 the product passed the ICC-ES certification in the United States.
Application of waterproof permeable air film for example
Tweqiang® waterproof permeable film / diaphragm is suitable for airports, railway stations, public venues, commercial centers, office buildings, industrial plants, cold storage, residential and other fields of roofing and wall. Including metal roofing system, dry hanging panel curtain wall system, wood/light steel structure residential wall roofing, tile roofing, cold storage and low-energy buildings and other fields.
waterproof permeable air film in metal enclosing structure applications:
waterproof permeable air film because of its both waterproof and permeable performance, especially suitable for steel structure plants, venues, infrastructure of metal roofing and wall systems, its special permeable vapor performance can be effective To prevent insulation internal condensation, with the vapor film can achieve the metal roof waterproof, moisture-proof, on the other hand, its good waterproof type, can provide a second waterproof layer to the structure, blocking the invasion of rainwater, its surface good drainage so that the condensate discharge.
waterproof permeable film in the non-transparent curtain wall application:
curtain wall building due to high fire prevention requirements, usually choose insulation cotton as a thermal insulation layer, waterproof permeable film applied to the outside of the curtain wall insulation cotton, can block the infiltration of rainwater, while allowing the heating season into the building wall moisture discharge, to avoid moisture in the insulation cotton insulation cotton amassing lead to insulation failure, mold decay, shedding and other quality problems.
Waterproof permeable air film in steel/wood structure building applications:
waterproof permeable air film in light steel structure or wood structure application is its earliest application, on the one hand, its wind resistance to the building provides a good airtive barrier, reducing The reflow cooling caused by air penetration makes the building more energy-efficient, on the other hand, its permeable performance helps the water vapor diffusion in the surrounding structure, avoids the damage of the building by condensation, keeps the structure naturally dry, and improves the service life of the main body of light steel or wood structure.
waterproof permeable air film in the application of tile roofing:
waterproof permeable air film is commonly used in Europe for dry-hanging tile roofing, it is used as a durable roof waterproof mat, applied between the insulation layer and the hanging tile bar, long-term effective provision of roof waterproof protection, at the same time different from the traditional waterproof mat in the air, waterproof permeable film can avoid winter building water vapor in the roof structure of condensation and condensation. Waterproof permeable film in the application of tile roofing using empty paving process, can greatly speed up the construction progress, shorten the construction cycle.
The application of moisture-proof vapor film in cold storage:
cold storage its special low temperature conditions make it the building enclosed structure insulation and moisture-proof vapor isolation performance put forward ultra-high requirements, Tweed strong® moisture-proof air-isolation film using DuPont Typar composite polyolefins, metal partition The thermal coating is manufactured to provide ultra-high moisture resistance, which can block the penetration of moisture into the insulation layer in the reservoir, ensuring the long-term effectiveness of the cold storage insulation material, and its 100% air tightness to meet the more stringent air tightness design requirements of the cold storage, reducing the cooling energy consumption of the cold storage.
Waterproof permeable film in low-energy building applications:
passive low-energy building as a new type of energy-efficient building system, which put forward higher requirements for the overall air tightness of the building, waterproof permeable film and diaphragm as building air tightness materials, widely used in passive low-energy building outside Walls and roofs, for masonry or concrete structure passive building it is often used as a hole, seam and other airtip weak parts of the airtip layer, improve the building's air tightness, avoid the loss of heat caused by air penetration, but also improve the building door and window hole, through the wall pipe water tightness.