25-08-2017, 09:32 PM
FENESTA BUILDING SYSTEMS.
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INTRODUCTION
FENESTA BUILDING SYSTEM is India’s first ever window solution provider, specializing in the design, manufacture, installation & service of precision-engineered made-to-order UPVC window systems. Fenesta production capacity 200,000 windows a year.
British standard (BS 7412 & BS 7413) govern FENESTA’S quality standards. The extrusion plant is in Kota & the fabrication units are ISO 9001 certified.
● Need have Advanced Window Systems
Fenesta window are engineered to suit various fierce climate condition, can withstand extreme temperature.
UPVC window systems rate better than traditional material used for windows & doors due to the inherent strength of the material (UPVC) – high impact resistance, termite resistance , strength, durability, non-corrosive &fire retardant. The design incorporated in UPVC is further al conductivity. Based on design that integrates the two, these energy efficient window promises excellent thermal & sound insulation.
● Blending technique:
The blending section consists of three mixers turbo mixer, cooler mixer, homogenizers. These mixers are large hopper like structure in construction, which are connected to each other and each mixer is present at a separate floor because of their bulky structure.
In the blending section the PVC resin and additives are transferred to weigh station, where the mass of each additive is weighed in tones. Then this is dumped into the turbo mixer. In turbo mixer the mixture undergo heavy vibrations and force which gives hot fine blend.
ZONES OF EXTRUSION MACHINE
FEED ZONE
The zone present dierctly under the hopper is feed zone, this is where the material is let onto the screw and settel into the spaces. Heat is aplied in from of conduction from the barrel via a heater band. Here the material is heated and also contineous motion is given to it such that thematerial softens before entring the the next zone.
COMPRESION ZONE
Here the material is put under more pressure and is heated a lot more in ths tightly packed section of screws. The heat is provided from the heater band on the barrel and there is a extra heat generated through the internal heat generated by friction from the powder and the screw
METERING ZONE
The pressure produced in the molten state is applied at final mixing, increasing friction and the temperature at the adapter
FOILING
It is a secondary process of fenesta. It is the process of lamination of the surface of the profile with PVC foil layred with uv resistant acrylic film . The foiling increases the life of the profile, gives it a good glossy look.
Foiling machine consists of many number of rollers over which the profile moves. The profile is foiled up with the heat treatment process. The heating is done with the help of four heaters, two vertical, one upright and other down facing. The acrylic sheet is preheated with the help of upright heaters to 60-70°. Then it is forwarded to the vertical heaters where it is again heated to 30-45° and then is projected to the moving profile. The profile entring the machine is pre worked with glue and thinner to make the surface slightly rough and sticky such that the lamination strip stick to it. The rollers over which the profile moves are set manually by the worker such there is no air gaps left in between lamination strip and the profile. Some of the rollers are foam coated in which chill water is supplied tim to time for the cooling of the profile. After this whole procedure the profile are ready for dispatch.
OVERVIEW OF TOOLING
The tooling section deals with the tools for the maintenance of the extruder, grinder or machine parts of any section of the plant. This section deals with all the problem related to the working of machine part of any machine. Also consists of extra motors, water tanks, cutter blades, etc. such that if one damages extra one is their, in order to maintain the production rate. This is also a store house where different types of cutter blades, water tanks, dies, etc. are kept.