VISITEC GLOBAL

Faridabad, Haryana

The resistance to water penetration is determined by the quantity of water absorbed by a paper or a board when one of its faces is placed in contact with this liquid, under the conditions.

Cobb Tester consists of a brass (or gun metal) cylinder of known inside diameter and length. It has a metallic plate, which is used for clamping the one side of the cylinder with the help of bracket and bolts. The metallic plate, which is used for clamping purpose, is paste a rubber sheet for the perfect clamping. The whole assembly of the cylinder and clamping arrangement is pivoted so that easy and fast pour off the water takes place. A brass roller of specified size and shape is also provided with the instrument. The equipment is designed to give a long and trouble free life; the components are bright polished and bright chrome platted.

APPLICATION:

Eccentricity Tester is useful to check the thickness of preforms or bottles. It is provided with digital gauge for more accurate measurements. With equipment of revolving type with zero tolerance eccentricity, making it must for laboratory based applications. These are used for verifying parameters of banana performs where it’s revolving mechanism allows for accurate checking of eccentricity and thickness of preform.

FEATURES:

• Suitable for checking perform eccentricity and thickness in laboratory setup
• Equipment is of revolving type and comes with zero tolerance for eccentricity
• Revolving mechanism also allows accurate checking of eccentricity and thickness
• Features LCD display support

In Din method of determine abrasion resistance of vulcanized natural or synthetic, a cylindrical rubber test specimen is abraded against an abrasive surface mounted on a rotating cylindrical drum in such a manner that abrasion takes place on one of the flat ends of the test specimen which is held against the abrasive surface under a specified load while being traversed across it. The ratio of the volume loss of a standard rubber to the volume loss of the test rubber measured under the same conditions, expressed as a percentage, gives the abrasion resistance index of the rubber under test.

Din Abrasion Tester is designed to determine abrasion resistance index of natural and synthetic rubber in accordance with the above principle. It consists of test specimen holder with a cylindrical opening adjustable between 15.5 to 16.3 mm to clamp the test specimen with an arrangement to adjust the length of test specimen protruding out. The holder is mounted by a screw mechanism along a length of a rotating drum on which the abrasive cloth is fixed. The movement to the screw mechanism and drum is given by an electric motor, gearbox and chain mechanism to give the specified speed of rotation to the drum and the specified lateral movement to the test specimen holder. The swivel arm and test specimen holder are so disposed that the test specimen is pressed against the drum under the specified load with its centre axis at an inclination of 3 degree to the perpendicular in the direction of rotation and placed above the longitudinal axis of drum. A rack and pinion arrangement to rotate the test specimen about its axis during the test (whenever desired) is also provided.

The abrasive cloth is firmly fixed to the drum using a suitable peel able adhesive with the ends of the abrasive cloth butt jointed together. The equipment is provided with limit switches which, in addition of giving over travel safety to the movement of test holder by preventing the lower edge of the test specimen holder to touch the abrasive cloth.

The equipment is built on rigid steel base and finished in grey metallic and bright chrome / zinc plating to give it a corrosion resistant finish. Moulding die, rotary type cutting die(hollow drill) for preparing test specimens and extra abrasive cloth are available as optional accessories.

The scuff tester equipment is intended to evaluate the rub proofers of prints on paper or board. It can also be used to measure / evaluate color transfer from printed/coated surface during rubbing.The application can be extended for measurement of abrasion resistance of some plastic materials /aluminum foils. In this Pressure applied to upper disc by interchangeable deadweight.

Two contact discs rotate in contact at the same angular speed giving constant relative velocity between all points of the disc. Uniform rubbing achieved in all direction. Top plate position adjustable Dust and particles may be removed by air blast.

Determination of thickness of Film is considerable importance, both for assuring conformity with design parameters and for evaluation of various physical properties determination of thickness of Film sample in laboratory is usually carried out with the help of a bench thickness gauge .The Film component whose thickness is to be determined is kept on a flat anvil and a circular indenter is pressed onto it from the top under a specified pressure .the contact faces of the anvil and the indenter are ground flat and set in planes parallel to each other .

Bench Thickness Gauge for Film consists of a digital micrometer fitted on a rigid metallic frame .the micrometer has a flat circular indenter, which exerts the specified pressure on the Film sample whose thickness is being measured through a dead weight .the paper sample is kept on an anvil, which is in from of a flat circular platform. The axis of the indenter and the anvil coincide and is the same as the axis of movement of the indenter. The indenter can be raised and lowered gently onto the Film sample with the help of a lifting lever.