Watertight welding of plastic membranes is one of many Leister competencies in underground engineering. In the late summer of 2021, VARIMAT and Co in Bern began the renovation of the Weyermannshaus open air swimming pool. Swimmers are set to return to their “Weyerli” from May 14, 2022.
The AZART Group of companies has its headquarters in St. Petersburg in Russia and has been manufacturing inflatable products made of PVC fabrics for state authorities and the entertainment industry for over ten years. In recent years, AZART has continuously expanded its product range and is now successfully represented on the market in various sectors.
For the Winter Swimming World Championship in Russian Tura a pool basin was needed that could be implemented without heavy construction equipment. Klyaksa 72, an advertising company, is used to think out of the box and built the basin out of strong PVC mesh. Klyaksa could count on the great service of Olmax and Leister‘s UNIPLAN E hot air welder turned out to be indispensable for creating infrastructure.
The 10th annual Winter Swimming World Championships was held March 8-12 in Tyumen, Russia. The competition drew 1,275 participants from 42 countries worldwide. Swimmers competed in events ranging from 25’s of all strokes to the 200 freestyle in pool filled with water from the river in Siberia.
The swimmers had to compete in an open reservoir: a lake, a river, or a bay. One of the largest rivers in the Siberian Tyumen region, Tura was chosen as the venue of the 2016 Championship. It was necessary to build a pool basin, while resolving the following tasks: to ensure the safety of swimmers and compensate the current level of the river. Many options were discussed: from the manufacturing of an aluminum frame to drilling piles - these would be costly projects, the implementation of which would cost a few million rubles.
The “D-Fitness” swimming pool (formerly the “Dynamo”) in Kazakhstan’s former capital and largest city, Almaty, was built in 1930. It was the only indoor swimming pool with 50-metre (164 ft) lanes, corresponding with Olympic standards, in the entire country until 1967. The need for refurbishment was so obvious by 2012 that a fundamental overhaul was initiated. The swimming pool was to be open to the public as well as to serve Kazakh athletes. The construction and building work for Olympic swimming pools is technically complicated. Compliance with strict specifications, which apply to such pools everywhere including Kazakhstan, was necessary for this, the largest pool in the country.
Top machinery from Switzerland
To meet the high quality standards, 1.6 mm PVC waterproofing membrane was used to seal the swimming basin – in a suitable, light blue color for swimming, of course. To ensure that the welding seams were completely hermetically sealed, Leister welders were used. The VARIMAT V2 hot air welder as well as numerous TRIAC S and TRIAC AT hot air tools from the Swiss manufacturer were employed. Historically, the VARIMAT V2 is primarily used for welding over-lapping plastic waterproofing membranes on roofs, but it is also suitable for connecting the sealing sheeting for swimming pools. With the VARIMAT’s understandable and easy to use «e-drive» control unit, relevant welding parameters for speed, temperature and air volume can be simply regulated and controlled. It is also very cost-effective with speeds of up to 12 m/min (39 ft/min). Leister’s well-known reliability also applies to the manual welders in the TRIAC series. Here, the welders were used for detail work on closures and details such as stairs and drains. The TRIAC AT has a display that allows both the temperature and the air volume to be digitally-monitored.
With over 40,000 square meters (430,556 square feet) of shade structure products, Egypt-based shade specialist, FTH-Industries, delivers standalone shade structures to schools for playground areas, sun covers, shade canopies for car parks and industrial shading structures.
FTH-Industries uses heavy-duty materials—HDPE fabrics as well as PVC tarpaulins—in their shade structures. Until recently, the traditional sewing application for large and heavy items, like tarpaulins, consisted of using rings to connect ends.
However, a problem often recurred when connecting more than one fabric roll to produce larger spans: To achieve reliable connections, the staff at FTH-Industries needed at least two sewing passes, which regularly resulted in lower outputs due to this time consuming procedure.
Another problem lay within the thickness of the PVC tarpaulins: For larger spans, 750 to 900 gram (22 - 26.5 ounce) material and higher were used. Now, imagine the difficulty of moving this weight through a sewing machine! Use of thick UV-treated threads did not make the job easier.
Perfection is mandatory in professional sports: Mistakes are costly, timing is critical and excellence requires precise form. The same holds true when you weld banners for some of the biggest names in athletics.
American signage firm AMI Graphics has a customer list that includes the National Hockey League (NHL), the National Basketball Association (NBA/Boston Celtics) and other professional sports leagues nationwide.
AMI designs, welds and delivers the solid and mesh vinyl banners these leagues use to advertise at some of the country's biggest arenas. AMI's customers often need these banners on tight deadlines, since championship contenders are frequently decided shortly before the finals actually occur. That means AMI must complete large signage projects while on the clock. And like any match that comes down to the wire, the pressure is intense.
lbania is one of the fastest growing countries in terms of economy in southeastern Europe. Between 2004 and 2008, the average economic growth was 6%. On November 28, 2012 Albania celebrated its 100th year of independence from the Ottoman Empire, an important event for a proud nation. The center of the capitol, Tirana, was festooned especially sumptuously for the occasion. A gigantic Albanian flag covered the facade of the International Hotel, the highest building in the heart of the city of Tirana.
A landmark for two months.
The flag was manufactured by the Sakuli Sign & Printing and was 1,254 square meters in size. It was the largest Albanian flag ever made in Albania. It was printed on PVC mesh material in multiple strips which were then connected using Leister welders. According to Sakuli, they only considered Leister technology because they wanted to ensure the quality and durability of the welded seams. The overlapping seams were welded with a UNIPLAN E, while TRIAC S hot air hand tools were used for handling the details. Up to 14 employees worked on the printing, welding and assembly work. The installation work on the facade of the hotel itself was completed in just one night. The flag hung for two months over the hotel facade and could be much admired and photographed by passersby as a landmark of the capitol.
Turkey has taken a giant technological leap forward due to its close ties with Europe. Several industrial sectors have been upgraded. As a result, they can go toe to toe with the competition the other side of the Bosporus, no matter what aspect of the industry. One example of this new development is the Kadesan Karadeniz Branda Company located in Istanbul. Kadesan produces complete truck bodies. Currently, 12,000 truck covers, 20,000 sliding roof systems and 700 chassis bodies are delivered annually to not only Turkey itself, but also throughout the rest of Europe, Russia and the Near East. Founded 27 years ago, this innovative company currently employs 220 people and is organized into three companies. One of these companies exclusively produces truck covers. Everything is executed in-house – from plotting the graphics and executing the overlap welding for the individual parts, to welding the seams along the edges and attaching the tapes through to assembling the grommets and belts
Air supply is vital for mining work. While in the past metal or canvas ventilation ducts were used, today predominantly flexible air ducts are required. These are manufactured from industrial fabrics by welding with hot air. The company Duflex has specialized in the production of these air ducts. They are not only used in mines; they also protect life and limb in tunnels and in working environments where there is a risk of explosions.
The 11th China National Games were held in mid- October 2009 in the city of Jinan, capital of Shandong province. These games were China's most important sporting event after the 2008 Summer Olympics. To enhance its competitiveness, the Shandong provincial government produced an action plan to benefit sustainable development. In view of its position as the location of the China National Games, the administration of Jinan itself decided to invest in infrastructure and the appearance of the city.