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Factors Affecting the Water-Vapor Permeability of Leather testing Method

The basic principle in all water vapor .permeability tests developed for leather is the use of the specimen as a diaphragm with a region of high relative humidity on one side and one of low relative humidity on the other. The gain in weight per unit area on the low relative humidity side in unit tim...


Scratch testing for assessing the adhesion strength of coating

The most popular and widely used technique for assessing the adhesion strength of coatingsubstrate systems , scratch testing consists of using a hard metal or diamond spherical tipped indenter (typically with a radius of 200 m) to apply an increasing load on the coating surface continuously while th...


How to check the color fastness of a fabric

We can define colorfastness as, having color that will not run or fade with washing or wear. That means characterizes a materials colors resistance to fading or running. Clothing is colorfast if its colors and dyes do not bleed or run from the clothing. Clothing should be tested for colorfastness be...


The significance and Use of Pilling Resistance test

Acceptance TestingThis method of testing fabrics for resistance to pilling is not recommended for acceptance testing.If it is used for acceptance testing, it should be used with caution because interlaboratory data are not available. In some cases the purchaser and the supplier may have to test a co...


Random Pill and Resistance Test ASTM D-3512

This test is used to cover the resistance to the formation of pills and other related surface changes on the textile fabrics using the random tumble pilling tester. The procedure is generally applicable to all types of woven and knitted fabrics. Textile samples are placed into the random tumble pill...


How to ensure the Quality of the corrugated Boxes

Corrugated Boxes. Most corrugated fiber board is made from cellulose fiber, or trees that are used for wood. However, at Peek Packaging, the majority of our corrugated boxes are made from 100% post industrial wood by-products. Quality of the corrugated Boxes is never about the high strength of the m...


The method Glass Screen Wear Resistance Testing

Due to the property of being optically transparent, glass is widely used in a variety of products, such as windows, containers, optical lenses, mirrors and countless others. During the manufacturing process, glass can be formed into different shapes, ranging from flat sheets to highly intricate shap...


Widely Applied Scratch Test

The scratch test has become one of the most widely applied methods to evaluate coating adhesion at present. Over the past two decades, this technique is extensively used to assess the adhesion of PVD/CVDdeposited superhard nanocomposite coatings, which usually exhibit a high residual stress at the c...



A new scratch test methodology is developed here. Different test conditions are used in conducting the scratch tests. The results is compared and assessed to determine the best method. Results from a concurrent study using finite element analysis (FEA) will also be presented. Model Material System a...


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