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ANALYSIS LABORATORY – PRESENTATION OF THE PHYSICAL & MECHANICAL TESTING LABORATORY

SecurityPapers 8 February, 2019
Analysis Laboratory - Presentation of the Physical & Mechanical Testing Laboratory

Ceprohart analysis laboratory – RENAR accredited

A special analysis laboratory for our work is the Physical & Mechanical Testing Laboratory. Ceprohart SA operates several laboratories where can be deployed applications or where cellulose, paper and cardboard can be tested. One of these is the Physical & Mechanical Testing Laboratory, accredited by RENAR SR EN ISO CEI 17025: 2005, since 2002.

This accreditation provides the guarantee of quality and professionalism with which the designated team deals with any problem. This team is impartial, objective, focused only on results, and guarantees the accuracy of the services offered.

The fact that the Physical & Mechanical Testing Laboratory is RENAR accredited proves that it works on a quality system and meets the national, European and international standards. Test reports are issued with the RENAR logo and are nationally and internationally recognized.

The company can thus engage in legal disputes by providing expertise in the areas of expertise or by providing advice by conducting trials, interpreting the results for various paper products.

This analytical laboratory is equipped with the following devices:

  • Spectrophotometer to determine optical properties
  • Testing system for resistance features
  • Device for determination of water absorption capacity
  • Device for the determination of burst resistance
  • Device for determining air permeability
  • Device for determining tear resistance
  • Device for determining paper smoothing
  • Micrometer
  • Device for determining paper bending strength
  • Microscope

How are different features of paper products measured?

The optical properties of the paper are opacity and whiteness. These can be determined with the L & W Elrepho device. Opacity is the inverse of transparency, representing the ratio of the reflector factor to a black support and intrinsic reflectivity. The degree of white is the intrinsic reflector of a layer of product thick enough to be opaque, measured at a wavelength of 457 nm.

Traction resistance characteristics of stationery products are given by the length and breaking load. These are determined in the longitudinal direction and represent the force, ie the length at which a determined width specimen, suspended at one end, breaks below its own mass.

Water absorption represents the mass of water absorbed by 1 m² of paper, within a set time frame and under certain conditions. This is determined by the Cobb device.

Burst resistance is the maximum pressure supported by a perpendicular plane specimen, evenly distributed under the given test conditions. This is determined using the Frank device.

Air permeability is the air flow through the surface unit under a pressure difference unit under the specified conditions. This is determined by the Gurley device.

Tear resistance is the average force required to continue cutting into a single sheet through an initial cut and is measured with the Elmendorf device.

The smoothness  is expressed in seconds and represents the time it takes to suck a quantity of air at atmospheric pressure between the surface of the specimen and a ring-shaped plane at a certain pressure difference. This is measured with the Bekk device.

The micrometer is the device that determines the thickness (the distance between the two sides of the paper product).

The bending strength of the stationery products is the average number of bends to which they resist. It is determined by a special device, which bends the specimen in one direction and then the other, around the same axis.

The microscope is an optical instrument that helps to play a larger image of an object. The professional lens system, dedicated software and attached digital camera help:

  • on determinating the fibrous composition of paper products,
  • in the dimensional characterization of fibers,
  • on fiber identification,
  • determinating proportions etc.

This analysis laboratory – Physical&Mechanical Testing Laboratory is a pride for Ceprohart, as accreditation from RENAR has provided a guarantee of service and satisfied customers. The staff is dedicated, 100% involved in solving each incoming order, and the results are in place!

 

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