MCR Testing Laboratory

Schieffelin institute of Health research and Training Institute, Karigiri was the first one to produce MICRO Cellular Rubber) MCR in 1962 and since then has been producing quality MCR sheets and sandals.

The testing laboratory which was started in collaboration with the Rubber board of India in 2004 is used in testing the quality of MCR rubber and footwear manufactured for leprosy affected patients in our MCR rubber and footwear units. The testing laboratory is capable and has the capacity to test the MCR rubber and footwear in bulk quantities.

The testing Laboratory does quality assurance checks on the MCR rubber and footwear manufactured and provided to Leprosy affected patients all over India. Periodically calibrated testing equipments are used for conducting tests by a team of professionals for precise results.

Testing Methods:

Independent testing services for vulcanized rubber and rubber products are carried out in a controlled environment.

The laboratory offers a range of testing methods

  • Mechanical
  • Physical
  • Chemical

Testing Standards:

  • The strict standards maintained in the laboratory ensure that the products tested would be of highest quality and would meet the specifications as required by the clients. Regular up gradation and calibration of the equipments are done to get reliable and authentic results. 
  • The tests conducted in the lab would be based on the clientele’s standards required for application trials, development and improvement on newer rubber materials, defect detection for failure analysis and basic research of the theoretical strength of materials.
  • Tests are carried out under environmentally controlled conditions to ensure that the materials and products meet specifications and fit their intended purpose.

Our Clients:

  • Leprosy & Diabetes Hospitals
  • Commercial Establishments
  • Footwear Centers/ Companies
  • Individuals/ Patients

The tests are performed in order to verify mechanical characteristics and physical properties using advanced technologies to conduct systematic, independent and impartial examination to verify and validate the product

Mechanical Characteristics:

  • Yield and Tensile strength
  • Elongation and Bending strength
  • Impact strength
  • Bond strength
  • Abrasive resistance

Physical Properties:

  • Compressive strength
  • Heat/ Room temperature Shrinkage
  • Hardness/ Hardness after ageing at 1000C
  • Flexing Property (Initial Crack/ Cut growth after  100000 cycles)
  • Split tear strength

Chemical Properties:

  • Determination of melting point in  solid samples, essential to find the melting range of samples

The testing equipments include:

The abrasion tester will ensure that the formulation used in the rubber has its degree of resistance to abrasions. The determination of volume loss by this method is suitable for comparative testing and for checking the uniformity of specified products.

Impact Resilience Tester

The impact resilience or the ability to absorb shocks is one of the major property of the rubber. The impact resilience of the rubber is tested based  on the measurement of the  height of the  rebound of a standard plunger after it is dropped from a fixed height onto the surface of the rubber specimen under test.   

Flex Tester:                         

The test will help to assess the ability of the footwear sole to withstand repeated bending experienced during walking without developing a crack.  It also is used to  find out the ability to withstand any slit formed due to sharp edge or pointed object during walking.

Adhesion & Fatigue Tester (Photos Attached)

The strength of adhesion between any two layers of flexible materials bonded together either with the help of an adhesive or by curing can be determined by finding the force needed to separate the two layers at a specified speed.

The materials used in footwear soling and other similar uses are subjected to repeated compression in actual use. The test equipment helps to evaluate the properties subjecting to repeated compression under controlled conditions.

Other test equipments include:

  • Oscillating Disk Rheometer
  • Specific Gravity Balance
  • Electronic Tensile Tester

TESTING OF FOOTWEAR (Kindly send in the type of tests required to be done on the Leather/ MCR footwear along with the request):

Department of MCR and Rubber Mill

E.mail: mcr@karigiri.org