The profiles for windows and doors are made of high impact hard PVC. They are manufactured through the extrusion of a mixture of thermoplastic polymer, polyvinyl chloride (PVC) as the main component and various additives.
The material bases for raw PVC are ethylene and salt. Ethylene is manufactured from oil feedstock or LNG and chlorine manufactured from Natrium Chloride (salt). Ethylene and chlorine react to form vinyl chloride, a chemical gas which through polymerization produces PVC. The resulting product is a white powder. To increase the impact strength PVC for window profiles is mixed with an acrylic ester to form a copolymer. The copolymer is mixed with additives to improve:
|Bulk Density (Specific Weight)||1.41 – 1.46 g/cm²|
|Tensile strength||44 N/mm²|
|Elongation elasticity coefficient||≥2.220 N/mm²|
|Impact strength (RT)||≥20 KJ/m²|
|Impact resistance (- 40oC)||No rupture|
|Linear expansion coefficient||0.8x10-4/°K|
|Vicat softening temperature||78-82°C (Depending on the applied formula) Colour change should not go beyond level 4 of the grey|
|Weather resistance||scale in accordance with ISO 105- A 03|
The windows comply to DIN 18055 or BS 6375: Part 1. The actual performance achieved depends on window style, design and size as well as profile combination used.
The air permeability shall be tested in accordance with BS 5368: Part 1, EN 42. The value shall be as small as possible to avoid energy loss for e.g. air conditioning, maximum 1m3/m/hr at an air pressure of 10 Pa. typical value for VEKA tilt and turn windows, casements is 0.1m3/m/hr.
The water tightness is tested in accordance with BS 5368: Part 2 EN 86. There shall be no leakage at a certain wind pressure, amount of sprayed water and time. Typical classification for tilt and turn is group B and C, 300 and 600 Pa.
The wind resistance is tested in accordance with BS 5368: Part 3, EN 77. The maximum allowed deflection is 1/300 or 8mm between two edges of an insulating glass unit. Gust of wind is a repeated test (50 times) at +- 1,000 Pa for classification “C”. There shall be no permanent residual deformation, damage, or functional defects.
The thermal insulation value is an important factor to save energy for heating and air-conditioning. The VEKA multichambered profiles have a U-value of 1.4- 1.8 W/m2K. Using single, double or specially treated glass units the U-values range between 6.0-1.0 W/m2K where the smaller value is the better one.
The double sealed window design (inside and outside weather stripping) along with the reinforced multichambered profiles results in excellent sound insulation. Depending on the chosen glass unit the reduction is Rw 30 dB-42 dB for e.g. noisy city centers.
uPVC is classified as self-extinguishing. The VEKA material has been tested to BS 476: Part 7. It has a class one surface spread of flame. VEKA windows have been used for many years in high rise buildings in many countries in the world e.g. Jinan/China, Abu Dhabi/UAE, besides Europe.
Maximum sash area is 2.1 m2
Maximum sash width 1300 mm
Maximum sash height 2150 mm
Bottom hung and top hung windows are mainly recommended for rest rooms where only ventilation is required. For these windows fix removable type fly screens are recommended if required.
Sliding elements are smooth running, durability, easy operation and handling. Quiet and smooth running of the sash is ensured by bogies with premium needle roller bearings which can bear sashes of up to 140 kg in different designs. The sliding elements are locked by means of a standard window handle. Special drive rods with back sets of 7.5 mm and 15.5 mm are used to enable a positive mushroom-head closure between the frame and the sash materials.
|Sash width||600 mm||2,000 mm|
|Sash height||650 mm||2,400 mm|
|Sash size||4.8 m²|
|Sash weight||180 kg|
Panorama tilt and sliding system is designed for safe opening and closing of the window for ventilation and cleaning. The excellent sealing ensure high protection against rain, damp, thermal, sound, and draft insulation due to excellent sealing properties. Burglar resistant fittings are optional for customers requiring special protection.
|Sash width||600 mm||1,650 mm|
|Sash height||420 mm||2,300 mm|
|Sash size||4.8 m²|
|Sash weight||150 kg|