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TABLE OF CONTENTS
Section No. Title Page No.
1. INTRODUCTION ………………………………………………… 3
2. PRODUCT & SERVICES……………………………………… 4
2.1. Rubber Gaskets………………………………………………… 5
2.2. O-Rings / Rectangular Rings…………………………… 7
2.3. Rubber Seals……………………………………………………… 9
2.4. Diaphragms……………………………………………………….. 11
2.5. Rubber Lining……………………………………………………. 13
2.6. Rubber Rolls……………………………………………………… 16
2.7. Teflon Coating…………………………………………………… 18
2.8. Belts…………………………………………………………………… 19
2.9. Rubber Molded & Extruded Goods……………………. 20
3. RESEARCH & PRODUCT DEVELOPMENT……………… 22
4. QUALITY CONTROL……………………………………………. 24
5. CLIENTAL…………………………………………………………… 25
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1. INTRODUCTION
Tech Vision Industries (Techvision) was established in 1987 and it is one of theleading rubber products manufacturers in Pakistan with office in Faisalabad.
Techvision is a well recognized and fast growing organization promoted by highlyexperienced and professionally qualified promoters. Its four-fold success in recenttimes highlighted the mass acceptance of its quality products and services. Besidesits nation wide direct marketing to prominent industries/end users, Techvision hassophisticated in-house facilities for products analysis and development.
Techvision is a premier manufacturer of high quality products of rubber. Techvisionserves include some of the largest and most prestigious names in global business.
The issues they face are complex, divers, rapidly changes, technical problems,constantly evolving and time period. Techvision matches that size and complexitywith its new global industries and clients program services delivery model thatharnesses the strength of our resources and orchestrates the deployment of ourbest people, solution and technologies so that clients can benefits from solutionsthat are tailored to their needs/specifications.
Techvision has also distinguished itself by defining a set of core values that guidesthe actions of the organization’s leaders and professionals. These values stressbehaviors such as open and honest communication, responsive leadership,creativity and integrity. They apply to every Techvision’s performancemanagement process.
Customer satisfaction is our primary objective. That’s why we are continuallylooking forward for ways to improve productions, enhance quality procedures andmeet strict delivery requirements. Over and over…again and again…Techvision hasproven to our customers that when it comes to challenging projects, we offersolutions: from design enhancements to the development of the special packingand everything in between.
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2. PRODUCTS & SERVICES / INDUSTRIES
Our organization provides following core products and services:
Rubber Gaskets O-Rings / Rectangular Rings Rubber Seals Diaphragms Rubber Lining Rubber Rolls Teflon Coating Belts Rubber Molded & Extruded Goods
Industries
We serve the following main industries:
Power Generation Oil & Gas Fertilizer Textile Paper & Board Sugar Steel Automobile Glass Chemicals Aerospace / Defense Graphic Arts
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2.1. Rubber Gaskets
Techvision is a leading, manufacturer-direct, one-stop source for all your Standardand Custom Rubber Gasket and Sealing requirements. Aside from our industryleading quality and service, Techvision handles all types and grades of rubbermaterials and employs all types of processes in order to get the job done right of
high quality, on time, and in the most cost effective way.
Why is the use of different processes important? Most fabricated rubber productscan be made through more than one basic process, but that doesn't mean that oneis just as good as another. In fact, we commonly work around "easier" ways to geta job done because, for instance, we don't want a customer to buy an expensivemold to get a few parts that could be done as die cut gaskets or extruding coupledwith secondary vulcanizing or machining operations. In other words, you don't haveto know whether the custom gaskets you need would be better manufactured asdie cut gaskets, extruded rubber seals, or molded rubber gaskets. Our technicalassistance is free, and our knowledgeable staff will consider all possibilities. Wethink you'll like how we do our job, and not having to worry about whether yourparts are a die cut gaskets or molded rubber, or especially whether or not they'llbe done right and delivered on time.
Of course, just as we don't approach your part requirements with a biased view onhow to fabricate it, we also don't favor any particular materials. In bothcases, our only bias is towards what works best for you, our customer (or at leastsoon-to-be customer...we hope). We won't try to sell you expensive fluoroelastomer rubber gaskets if your temperature and chemical resistancerequirements don't require it, and even if it does, we won't push a more expensive
variety like Viton®
(unless you insist) if a less costly alternative is available.
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Applications
· Fluid restriction· Weather insulation· Vibration dampening· Electrical absorption· Noise reduction· Packaging· Cushioning
Standard Rubber Gasket Materials
· Santoprene®· Silicone· Neoprene· SBR· EPDM· Viton· PVC
Capabilities
· Splicing and Vulcanizing· Dual Durometer Extrusion· Die Cut Gaskets up to 60” x 36”· Kiss Cutting· Flash Cutting (Parts up to 61" x 120"}
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2.2. O – Rings & Rectangular Rings
Techvision O-Rings & Rectangular Rings, in a full range of sizes and materials, are available in small or largequantities using stock tooling or with minimal tooling
costs.
Our Molded O-Rings & Rectangular Rings are designedusing carefully compounded rubber and manufactured toRMA Class A high precision tolerances.
Techvision Custom O-Rings & Rectangular Rings are cut to anylength and vulcanized to provide a strong, uniform thickness
and durable joint. Heavy duty static applications have used O-Rings & Rectangular Rings of this construction type successfullyfor decades.
Techvision employs many polymers in compounding to manufacture its O-Rings &Rectangular Rings to meet specific requirements. Polymers regularly used include:
Simriz Perfluoroelastomer
Aflas
Viton fluoroelastomers
Silicone
Kalrez
Apart from our regular products, we offer these products as per the specificationof our clients. These products can be availed in desired raw materials. We conformto international standards for manufacturing our range of rubber components.
Viton O-ring
Our qualitative viton O-ring is manufactured using qualitativeviton as raw material. Proper procedure in themanufacturing ensures our o-rings are capable to withstandthe high pressure in areas such as hydraulic cylinders.
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Silicon O-ring
We are capable of manufacturing O-rings by using silicon asraw material in the manufacturing process. Our optimumquality silicon rings find their applications in hydrauliccylinders and in areas where high pressure is the norm.
HNBR O-ring
Manufactured using premium grade Hydrogenated NitrileButadiene Rubber (HNBR), our O-rings offer excellentpressure resistance capacity. Our O-rings are characterized
by heat resistance, oil and chemicals. These are widelyused where high pressure is the common norm such as inhydraulic cylinders.
Quad Rings (X-ring)
We supply quality proven rubber O-rings which can withstandhigh pressure in the application areas such as in hydraulic
cylinders. These help in preventing hydraulic fluid leakageand help the system during the operation.
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2.3. Rubber Seals
Extruded rubber seals can be made in a variety of materials or co-extruded toachieve the proper balance of fit and function. We can utilize our laminatingprocess to add pressure sensitive adhesives or the extruded seal can be designed tosnap into place. Rubber seals of following specifications will be available:
Polyurethane Seals
Polyurethane is one of the most commonly usedelastomer in most of the industries, when highlevels of abrasion are present. This abrasionresistance is combined with high load & impactbearing capabilities that make polyurethane thematerial of choice for a number of machines andother engineering products.
Cast Polyurethane Seals
Polyurethane is a specification molder of castablepolyurethanes. Polyurethane molders open bymethods such as compression, transfer, pressure andcentrifugal cast molding. A wide range of this productis available in various specifications.
Flex Resistance Polyurethane Seals
Temperature Range: -40 degree C to +70 degree C. Load: 50 MPA.Features:
Excellent Abrasion resistance.
High Load Bearing capacity.
Superior cut and tear resistance.
Very good impact and shock resistance.
Excellent Flex resistance.
Very high tensile strength.
Good Oil Resistance.
Very high elongation at high hardness for e.g. At 90 Shore A Hardness P.U.compound would show an elongation of 300-400%.
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We have various raw materials in this category for different applications. Kindlycontact us for your requirements. These seals are machined as per precisiontolerances on CNC machines.
Wiper Seals
Rod wiper/scrapers effectively wipe and scrape the full 360º circumference of a
reciprocating rod. They are designed to remove road dust, dirt, ice, mud, weld
flash, paint and many other particulates from the rod surface.
They prevent damage to bearings, seals, packing, and rods, thereby reducing or
eliminating contamination of fluids in hydraulic systems.
Rod wiper/scrapers consist of a honed, double spiral,
wiping element of age-hardened beryllium copper
(Rockwell C 40 hardness) surrounded by a synthetic
rubber elastomer. It is designed so that the
beryllium copper element is distended from thefinal rod diameter. It is precision honed to an inner-
diameter tolerance of+/- 0.0005". The honing
process guarantees a true circle on the ring inside
diameter and provides a highly polished and knife
sharp edge. In operation, the beryllium copper ring
polishes the rod without damage to the rod's finish.
It is self-sharpening and does not oval, curve, or
feather.
Rod wiper/scrapers are found wherever hydraulic or pneumatic cylinders are used.
They have demonstrated their effectiveness on fork lifts, resistance welders, off-
road machinery, farm equipment, hydraulic presses, foundry machines, andaircraft landing gear.
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2.4. Rubber Diaphragms
Techvision's rubber diaphragms are versatile seals used in a wide range of applications to
handle various fluids, air, and vacuum sealing and flow requirements. Our rubber
diaphragms are custom-designed and engineered to operate for specific pressures and
pressure changes, mechanical requirements, fluid interaction, and dynamic life.
Techvision's rubber diaphragms can be tuned for unique application characteristics through
component and material design, to optimize final assembly performance and cost
Rubber Diaphragms typically function
within the application by transmitting
pressure from one system to another
without exchanging media between the
systems. Techvision diaphragms can also be
designed with integrated valves designed
to seal up to a pressure threshold before
allowing for the system to vent (leak). We
offer 100% in-line computer controlled
pressure testing of diaphragms for critical applications.
Our expertise enables us to supply homogeneous, rubber to metal bonded and fabricreinforced diaphragms using a combination of injection, compression, transfer, flashlessand fabrication techniques.
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Principal Diaphragm Types
Homogeneous Elastomer
Fabric-Reinforced Elastomer
Double-Coated Fabric
Rubber to Metal Bonded Teflon Bonded
Typical applications using our D iaphragms include:-
Gas Meters, Regulators and Pressure Controls
Valves - Pneumatic, Control, Cylinder, Gas, Reducing
Pumps - Vacuum, Petrol, Disc
Compressors
Actuators - Air, Gas
Solenoids
Measurement systems and controls
Pneumatic Cylinder Diaphragms
Pneumatic Servo Mechanisms
Turbochargers
Switches
Accumulators - High and Low Pressure
Molded Diaphragm Advantages
Best No Leak Seal
No Lubrication
Low Friction
Low Hysteresis
No Spring Rate
No Break Away Friction
Long Cycle Life
Effective In Harsh Environments
Constant Effective Pressure Area
Low Assembly/Hardware Costs
Ability to Operate Under Severe Pressure
Exceptional Sensitivity
Diaphragms are a specialist product. We have the experts who will advise youas to design and choice of materials to meet the ever-increasing demand forthis type of product. Our engineers will ensure that we select the appropriateproduction process to provide you with a quality product that meets yourrequirements and ensures long life and stability.
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2.5. Rubber Lining
Techvision has global across-the-board experience in the installation of rubber linings for a
diverse range of functions. Techvision’s rubber is an extremely versatile material to work
with. It is lighter then most wear materials and being flexible can be easily handled
whether in the factory or on site.
Techvision’s unique properties have been proven for over years. Techvision has been shown
to outlast Steel, Manganese Steel and even Ni Hard Iron, resulting in significant cost
benefits to the user. From a complete range of anti-abrasion linings for material handling
industries, to custom fabrications and molded components.
Techvision’s phenomenal resilience, exceptional tear resistance, all round toughness and
the unique cross linking of molecular structure, ensure that Techvision is well accepted
worldwide as irreplaceable.
We offer a wide range of rubber lining works such as rubber linings of tanks, vessels,pipelines and others that helps us in successfully meeting the requirements of our clients.The dedicated support of our research personnel and other skilled workforce help us inflawless delivery of our range.
Techvision will also be able to provide any kind of custom work or needs you might require,be it construction, modification, refurbishment or engineered products, large or small,large quantity or small quantity!The range offered under this includes:
Abrasion Resistance Rubber LiningWe offer abrasion resistance rubber lining for tanks, vessels and pipelines for high abrasivefluids. This kind of rubber linings is mainly used where metallic slurry is stored or conveyed.Acid Proof Rubber LiningWe offer acid proof rubber lining for tanks, vessels and pipelines for storing and conveyingof acidic fluid. This type of Rubber Linings is commonly used in D.M. Plants for acid storagetanks.Impact Resistance Rubber LiningWe offer impact resistance rubber lining for tanks and vessels for high impact materials.This kind of rubber linings is mainly used in stone grinding tumblers and ball mills.
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RUBBER LINING APPLICATION PROCESS:
The process of rubber lining is divided in to the following steps.
1. Preparation of the base surface.
2. Preparation of rubber sheets.
3. Application of the rubber sheets on the metal surface.
4. Vulcanization
5. Testing & inspection
Surface Preparation:This is very important process for rubber lining. The surface of the metal must be free fromoil, paint, scales, rust etc. This is generally removed with the help of sand blasting/ shotblasting. After the surface is cleaned, adhesive or bonding agent is applied to surface. Twoor three coats are applied, as adhesion is an important process for rubber lining.
Preparation of rubber sheets: The rubber compound is manufactured as per the requirements after looking in to thechemical and other conditions of the process. Rubber sheets are made on calendar machinein different plies. Lining up to 6 mm thickness can be applied in single layer. If thethickness is more, it is applied in 2 or more layers. For pipes & fittings extruded rubber
tubes are inserted in the pipes.
Application of rubber sheets:Un-vulcanized rubber sheets, which are prepared on the machine, are applied on to theadhesive coated, half dried surface under slight pressure of hand or with a metallic roll aswell as with the help of various lining tools. We have to ensure that no air gets trappedbetween the metal surface and rubber sheet. Joints are made levels and joined with helpof knurling tools.
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Vulcanization:By and large vulcanization is carried out in an auto clave. This is the process by whichrubber changes from plastic state to elastic state. The temperature and pressure dependupon the rubber compound and thickness of lining. Large size equipments, which are rubberlined at site, are vulcanized by open steam as well as by hot water curing, the temperatureis maintained to get the rubber cured and for this method special compound of rubber is tobe manufactured for this process.
Testing and Inspection:All the rubber-lined items must be tested before and after vulcanization. This is to ensurethat they are free from faults, which might cause failure of the equipment. Visualinspection in good light is carried out to check mechanical damages blisters and poor joints.There after spark test with a high voltage is carried out to check mechanical damages, pinholes, blisters and poor joints. Hardness test is must for rubber lining. Knocking test is alsocarried out by an experienced hand with the help of wooden hammer to check whetherthere is any poor bonding.
Protection of rubber lining equipments:
The vessel should be stored away from sunlight or it should be covered by tarpaulin or some,other device. This will avoid direct sunlight, which may affect the surface due to the
presence of ozone. The vessel should be filled up with water when not in use for longerperiod.
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2.6. Rubber Rollers
Techvision specializes in high quality, highspecification rubber rollers manufacturing. We
have a comprehensive program to offercustomers new rubber rollers as well as re-covering and re-grinding of old rollers forvarious industries.
We offer a complete polymer range of compound covers, but, also, muchmore. Over the years, we’ve developed literally hundreds of formulas to meet thespecific requirements of, or to improve upon, our customers' applications.
Our covering and finishing processes use the most contemporary equipment
including pressurized building lathes, state-of-the-art urethane and silicone castingmachines, computer controlled autoclaves and sophisticated CNC grinding,polishing, crowning, grooving and balancing machinery.
With the capacity to cover and grind rolls of up to 12 meters length x 2 metersdiameter and 20 tones in weight, We can cope with the majority of rolls used inthe industry today.
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Rolls Industries
Rolls services are offered for following major industries:
Textile
Paper & Board Printing, Steel
Steel
Leather
Glass
Fertilizer
Plastic
Mining
Laminations
Food
Paper cone plus many more
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2.7. Teflon Coating
BRI&EW is having a latest coating plant for application of Teflon coating. TeflonCoating is being done by using the most up-to-date and modern machinery andemploying latest technology. The entire job is being done by team of dedicatedworkers supervised by the most competent experts in the field. We give 100% jobsatisfaction.
Teflon coatings spray unlike paint & bake to atough inert finish. Over the years technology hasextended the family of Teflon coatings to ensure afinish with the ideal combination of properties tomeet most design needs.
By combining heat resistance with almost total chemical inertness, excellentdielectric stability & a low co-efficient of friction, Teflon coatings offer a balance of properties unbeatable by any othermaterial.
Special features of our Teflon coatings are:
Non Stick and self cleaning Heat resistance Unique electrical properties Cryogenic Stability Chemical Resistance
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2.8. Belts
Techvision's belts for industrial machines are used in a variety of industrialsituations.. These belts incorporate high performance functions to satisfy our
customers' requirements. In addition, we produce belts for agricultural machines,home appliances and information terminal devices to support your daily life. Wehave adopted “Ecology and Energy-Saving” as keywords in our aim to developvarious kinds of power transmission products using environmentally-friendlytechnology.
Techvision manufactures and supplies the high quality belts for the high techindustry.
We manufacture and supply the belts of following kinds:
V-belts,
Endless belts Grooved belts
Conveyor belts
Timing belts
Double a belts
Double b belts
Double c belts
Harvester belts
2 v belts
3 v belts
4 v belts
Transmission belts
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2.9. Rubber Moulded & Extruded Goods
Techvision is a manufacturer and fabricator of custom rubber extruded and molded
products. Our extruded rubber products include; silicone tubing, siliconehose, platinum cured silicone tubing, fluorosilicone tubing, silicone cord,conductive silicone rubber tubing, extruded silicone gaskets, rubber extrusion,extruded rubber profiles, rubber extrusions, extruded gaskets, P-strips, D-strips, E-strips, conductive rubber extrusion, conductive rubber tubing, conductive tubing,silicone vacuum hose, silicone extrusion, rubber U-channel, bulb seals, lip seals,hollow O-rings, tubular O-rings, extruded and spliced gaskets, weather-strippingetc. Our molded products include; boots, bellows, sleeves, seals, gaskets, washer,roller, rubber-to-metal bonded parts, etc. In house mixing and tooling allow us tooffer the fastest turn around and delivery flexibility. We have various formulationto meet FDA, 3A Sanitary, USDA, USP CL-VI, NSF, UL, Military and Industrial/Commercial requirements.
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3. RESEARCH & PRODUCT DEVELOPMENT
Research and product development plays a significantrole in the relationship between Techvision and itscustomers. As a result of intensive cooperation withcustomers in many fields, significant technical knowledgehas been acquired. Information is also exchanged on newtrends in production, distribution and consumption. Thisintegrated know-how is applied to market-orientedproduct development, which enable us to react promptlyto any changes. Different types and qualities of rubbersas per specification & environment are used.
It is our management objective to upgrade the technology, undertake developmentprogram to enhance the performance of our products and services, in every aspect,
demanded by modern machines of our customers.
With our years of accumulated experience in development and designing, we areable to coordinate with the requirement of our customers by designing veryprecision products for them, so as to create largest market advantage.
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Techvision developmental program focuses on: ---
Formulation of new compound for high tech industrial applications.
Quantitative and qualitative analysis of interaction between chemicals,wash-ups, solvents, inks and polymers.
Business Process Re-engineering (BPR) for the purpose of value additions tocustomers towards, quality, cost and delivery time etc.
Material Testing Services:
Hardness
Specific weight
Contraction
Tensile
strength
Elongation
Wear strength
100% modulus
Resilience
Ozone test
Heat ageing test
Oil-proof test
Friction test
(friction
coefficient)
Wear-proof test
Bonding strength
test
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4. QUALITY CONTROL
Techvision, adheres in maintaining, a system of Total Quality Management (TQM).Its objectives are to implement quality management system, at every step of production process. A constant improvement becomes the basis, where the positivecontribution by each employee becomes, the regular practice for achieving, higherperformance of the product. This reflects planned commitment adopted towardsall activities carried out during manufacturing of our products and delivering of services.
All incoming raw material, is carefully checked, for compliance to Techvision’sspecifications.
Printed job card stating customer’s specifications, travels with productsthrough every step of production.
Before dispatch, each product is inspected for visual defects, surface finish,“run-out” of spindle diameter and concentricity of roller, along with desired
characteristics of Rubber cover, like hardness, tensile strength, abrasion,resilience.
For new techniques and rubber testing, we are tied with reputed laboratoriesand R&D Institutes in the country
We had successfully implemented Quality Management System for ourmanufacturing system.
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5. CLIENTAL
Kot Addu Power Company Ltd (KAPCO) CHENAB Group
Rousch (Pakistan) Power Limited Mohammad Farooq Textile Mills Ltd
NISHAT Group Quetta Textile Mills Ltd
GULSHAN Group CRESCENT Group
ARSHAD Corporation SAPPHIRE Group
AMTAX (Private) Ltd Be Be Jan Fibers Ltd
FATIMA Group Ahmad Hassan Textile Mills Ltd
National Silk Mills Ltd Suraj Cotton Mills Ltd
Quetta Poineer Mills Ltd Faisal Spinning Mills Ltd
Rauf Textile Mills Ltd Chaudary Textile Mills Ltd
ZAPHYRE Group Bhanero Textile Mills Ltd
Mian Dying Mills Ltd Blessed Textile Mills Ltd
Rana Textile Mills Ltd Saeed Fabrics Mills Ltd
Mahmood Textile Mills Ltd Sahib Textile Mills Ltd
Mian Textile Mills Ltd SNA Textile Mills Ltd
Nishat Chunian Mills Ltd Phoenix Chemicals (Pvt) Ltd
Makkah Paper Mills (Pvt) Ltd Sargodha Jute (Pvt) Ltd
Shamsi Paper Mills (Pvt) Ltd Hamza Paper & Board
Mughal Ithehad Paper Mills (Pvt) Ltd Crescent Board Mills Ltd
Mian Fabrics Mills Ltd Cresent Bahu Man Ltd