Universal Tensile Tester
The UNIVERSAL TENSILE TESTER is used for determining the ability of the material to withstand forces that tend to pull it apart & to determine to what extent the material stretches before breaking.
Different type of plastic materials are often compared on the basis of TENSILE, FLEXURAL STRENGTH, ELONGATION, & TENSILE MODULUS DATA. Many plastics are very sensitive to the rate of straining and environmental conditions. The tensile property data are more useful in preferential selection of a particular type of plastic from a large group of plastic materials.
Tests for tensile strength (stress at fracture of the specimen) and elongation (extension of material under load of plastics. The first provides a measure of the breaking strength of the material but is radically affected by the rate of loading and the ambient temperatuere. Tensile strength in kgf/cm sq. = load (kgf) / a x b (cm sq.) Elongation % = (L2-L1) x 100/L1. Standard test methods : BS 2782 method 301, ASTM D 638, ISO R527.
The Hydraulic Press is laid out as four-column press. The machine can be used to produce all kinds of flat samples in the laboratory. Working dimensions are laid out for all aboratory standards and for the use of moulds.
Press force can be set with a hydraulic pressure control unit between 10 and 100%. A pressure gauge shows the actual pressure & leakages will be compensated automatically. All functions are controlled by solenoid valves & L.C.D. Based micro controller system.
All hydraulic units are connected on a valve bank. Together with an oil pump running under oil this leads to a compact design. Heating energy is provided by plate type heater which are arranged to achieve an equal temperature distribution. An integrated water cooling system allows to cool down samples under pressure. Insulating plates are used to reduce heat transfers to the press unit.
The MICROPROCESSOR based “TOUCH-SCREEN control panel is arranges side by side with the press unit to allow easy operation. Plate temperature will be controlled with micro controllers. Electric system and hydraulic parts are integrated in the machine however easy access allows maintenance.
The Two Roll Mill with fixed speed and friction is laid out for constant working conditions. The machine is available with roll diameters of 150 mm.
The rolls are driven by a geared AC-Motor. The rear roll is driven by spur gears for a constant friction. Modifications for speed and friction are possible to meet individual requirements within certain steps.
The rolls are aligned in rigid frames. The rear roll is in a fixed position for good access to the rolls. The front roll can be moved with a hand shaft. The central adjustment ensures parallel movement. The working width is laid out for both plastics and rubber processing.
The dirve system is equipped with a knee-actuated switch for emergency stop. Opening to the necessary safety distance can be done by hand however without turning of the rear roll.
The rolls are made of corrosion resistant steel and surface hardened. A central lubrication system combined with high – temperature resistant seal rings allow low maintenance operation. The electrical heating energy is provided by cartiridge. Heat distribution is controlled in three different zones to equalize differences over the roll.
The machine is equipped with a contactor control system. Roll tempoerature will be controlled with digital controllers. With the operating units mounted in an adjustable panel the machine can be operated from both sides.
Electric and drive system are incorporated in the machine frame with easy access for maintenance. The machine will be delivered with integrated controls and needs supply connections only.
Melt Flow Index Tester
The melt flow tester, built according to International standards, is an instrument for measuring with great accuracy the “Melt Flow Rate” and useful for quality control test on flow ability, grading of thermoplastic material according to flow In general, useful for predicting adequacy of thermal stability case of processing and quality of molding.
The Carbon Black Content Tester has been designed incorporating many features and new ideas. The apparatus conforms to the most generally recognised National & International standards including BIS, IS, ASTM etc.
To determine the average of carbon black content especially in polyethylene materials by pyrolysis method, like plastic pipes, films, sheets, cables, water tanks etc, this equipment is very much useful for evaluation of Carbon Black Content. Carbon Black is used in plastic as UV stabilizer to prevent degradation of plastic by UV radiation. It is also possible to find out ash content in plastic material by this instrument.
The Carbon Black Dispersion instrument is used to find out the dispersion of additives e.g. pigments, fillers in plastics. In plastic material, pigment and fillers play a very important role for matching the uniform colors as well as resistance against UV light.
This equipment is also useful for determination of surface defects, voids, bubles, filler distribution & other structural investigation.
The “generally” Hot Water Bath is used for Short Term and Long Term hydro-static pressure testing. Generally, incase of Hydro-Static test For HDPE, R-PVC, C-PVC, MDPE & LATERAL PIPES, the test specimen suppose to be tested either at room temperature or at highertemperature in water bath as per IS & ASTM STANDARDS.
The Reversion Oil Bath Tester is use to determine reversion characteristics of R-PVC pipe as per immersion method of IS-12235 (Part – V) standard.
The Zero Degree Chamber is specially used to condition the R-PVC pipes at 0 Deg. C. For impact testing as per IS 4985 standard.
A true material comparison is possible only when property values are determined by identical test methods under identical conditons. Generally speaking, physical and mechanical properties of plastics and electrical insulating material are affected by temperature and humidity. Plastic materials tested above room temperature will yield relatively higher impact strength and lower tensile strength and modulus. Obviously, in order to make reliable comparisons of different materials and test results obtained by different laboratories, it is necessary to establish standard conditions of temperature and humidity for testing.
The Hot air circulating oven is used for multipurpose tests for plastic matiral such as Shrinkage, Reversion, Warpage, Moisture Content and Leteral E. S. C. R. test at different temperatureFree Falling Dart Impact Tester
The Free Falling Dart Impact Tester is used for PVC pipes, PVC ducting pipes & HDPE pipes as per IS & DOT specifications.
The impact properities of the polymetric materials are directly related to the overall toughness of the materual. Toughness is defined as the ability of the polymer to absorb applied energy. The area under the stress-strain curve isdirectly proportional to thetoughness of a material. Impact strength is a measurement of toughness. The higher the impact strength of a material the higher the toughness and vice-versa. Impact resistance is the ability of a material to resist breaking under a shock loading or the ability to resist the fracture under stress applied at high speed.
The Opacity Tester is used to determine opitcal characteristics of plastics including colour, clarity, general appeareance and more directly measurable properties, such as index of refrection.
Most resin by nature are clear and transperant. They can be coloured by dyes and will become opaque as pigment or fillers are added. Polystyrene and poly (methyI methacrylate) are well know for their optical clarity, which even exceeds, that of most glass. Optical clarity is measurement of light transmitting ability of the material. It depends,among other things, on the length of the light path, which can be quantitatively expressed.
The friction tester is primarly designed to determine the Co-Efficient of Friction of Plastic films, sheets, laminate, pipes and paper etc. The equipment provides the measurement of static and kinetic co-efficient of friction. The apparatus conforms to BS 2782 and ASTM D-1894 and other equivalent standards.
Measurement of frictinal properites may be made on a film or sheeting specimen when sliding over itself of over another substance. The co-efficient of friction arer related to the slip properties of plastic films that are of wide interestin packaging application.These methods yield empirical data for control purposes in film production.Correlation of test results with actual performance can usually be established.
The HDT/VSP instrument is used for determining the deflection temperature limit for specific application and comparing the heat softening characteristics of thermoplastic material at a constant load in oil upto 300 Deg. Co.c
Plastic materials being heat sensitive in nature has a lot of bearing on its thermal environment for it’s performance. Though their behaviour in thermal conditions is very complex some simple yeild tests are used to predict it’s behaviour and performance in a given condition. “VICAT SOFTENING POINT” or “HEAT DISTORTION TEMPERATURE” is one of such yeild points very commonly employed with such demanding applications. Vicat test consist of penetrating a unit size indentor in a plastic surface with predefind load under constant rate of environmental temperaturerise. Heat distorsion test, as it is sometimes called, consistes of deflecting a simply supported beam of test material under similar heating conditions & with a predefined stress application.HDT
Test for deflection temperature of plastics under flexural load. Heat distoration temp. is the temp. At which a sample deflacts by 0.1 inch. (2.5 mm). Standart test methods: ASTM D648, BS 2782 method 102, ISO R75.
VST Vicat softening point is the temperature at which the needle penetrates 1 mm into the sample. Standard test methods : ASTM D1525, BS 2782 method 102D, ISO R306.Measurement of frictinal properites may be made on a film or sheeting specimen when sliding over itself of over another substance. The co-efficient of friction arer related to the slip properties of plastic films that are of wide interestin packaging application.These methods yield empirical data for control purposes in film production.Correlation of test results with actual performance can usually be established.
The Emitter Flow Rate Variation Tester is designed to determine the mechanical and functional requirments of irrigation emitters, and the data to be supplied by the manufacturer to permit correct installation and operation in the field. The appartus confirms toIS-13487 : 1992 standard.
It applies to emitters, with or without pressure regulation, intended for irrigation; It does not apply to emitters which form an integral part of the pipe during manufactur as well as microtubes.
Plastic materials being heat sensitive in nature has a lot of bearing on its thermal environment for it’s performance. Though their behaviour in thermal conditions is very complex some simple yeild tests are used to predict it’s behaviour and performance in a given condition. “VICAT SOFTENING POINT” or “HEAT DISTORTION TEMPERATURE” is one of such yeild points very commonly employed with such demanding applications. Vicat test consist of penetrating a unit size indentor in a plastic surface with predefind load under constant rate of environmental temperaturerise. Heat distorsion test, as it is sometimes called, consistes of deflecting a simply supported beam of test material under similar heating conditions & with a predefined stress application.HDT
Test for deflection temperature of plastics under flexural load. Heat distoration temp. is the temp. At which a sample deflacts by 0.1 inch. (2.5 mm). Standart test methods: ASTM D648, BS 2782 method 102, ISO R75.
VST Vicat softening point is the temperature at which the needle penetrates 1 mm into the sample. Standard test methods : ASTM D1525, BS 2782 method 102D, ISO R306.Measurement of frictinal properites may be made on a film or sheeting specimen when sliding over itself of over another substance. The co-efficient of friction arer related to the slip properties of plastic films that are of wide interestin packaging application.These methods yield empirical data for control purposes in film production.Correlation of test results with actual performance can usually be established.
The Hot Embossing Pipe Printing Machine is designed incorporating many features and new ideas. The machine is very easy to operate and even non-technical person can also operate the machine to get the results as per the requirement.