Most industrial abrasives used today are made from hard minerals and will used in order to shape or finish off a piece of work by rubbing. When the abrasive is rubbed against the item it causes part of its surface to wear away and this will then result in a reflective smooth appearance to it.

There are a number of different industries which will use abrasives in their manufacturing processes and the chemical and physical makeup of them will vary from one to the next. As well as many industries using abrasives to polish items others use them for grinding, honing, buffing, sanding, cutting, drilling and sharpening.

The majority of abrasives as we have mentioned are made from hard minerals which will have a rating of 7 or above on the Mohs scale. It is this scale which is a quick way of seeing just how hard a mineral is. Along with abrasives made from minerals there are some now being made using synthetic stones.

These synthetic stones often have both the physical and chemical characteristics that you would find in minerals which occur naturally. However, they are not able to be classified as minerals as they have not actually been constructed naturally.

Of all the types of abrasives used for industrial purposes today diamond is the most commonly used. As well as being made naturally this particular abrasive material can also be produced synthetically as well. Most of the diamonds that will be dug from the ground have been made from corundum, whilst those that have been produced by man will have been made using bauxite.

The diamond is one of the hardest substances known to man and yet there are plenty of minerals which are far softer than this and which can also are used for abrasive materials. One of the softest minerals being used today is calcium carbonate and this is frequently used as a polishing agent in toothpastes. It is this mineral in the toothpaste which will actually help to improve the whiteness of a person’s teeth overtime.

But just how effective the industrial abrasive is, is dependent on a number of different factors. One of these is the actual sizes of each grain or grit that makes up the abrasive material. The sizes from ones that are only 40 micrometers in size to those which are 2mm in size and these are the largest. But in order to get the right size pieces of grit for use in abrasive materials the mineral or synthetic stone needs to be crushed first.

As the industrial abrasives are used the grains which make it up will cause parts of the items surface to break away and leave the desired finish. But also at the same time the abrasive material begins to lose some of its grains as well and eventually overtime these will then need to be replaced to ensure that the right finish is provided every time.

As far as health-related professions are concerned, protection from pathogens is a growing concern, and textiles with antimicrobial properties are becoming more desirable. Fungi or similar other insects are responsible for lethal infections and allergic reactions. Despite the production of antimicrobial textile products; three inherent problems remain: Demonstration of efficacy, claiming efficacy in a manner that does not invite legal challenge and maintaining efficacy over the lifetime of the textile and through generations of microbial challenges.

These problems might be restated as how to test and present the results of the testing, how to make the effect durable, and how to avoid microbial resistance to the treatment. These problems combine so that in spite of the obvious commercial and advertising potential, effective, durable, inexpensive, and safe biocidal textiles are not widely available in the market. It is of note that one promising compound which has been appearing commercially in a variety of products has just encountered its first resistant organism.
Antimicrobial Technologies in Textiles:

Whether the performance or technical fabric is ultimately used outdoors, indoors, or on the body challenges such as microbial control, moisture management, odor control, elasticity, and even softness are prevalent. These challenges offer new opportunities to wisely seek technologies to address those needs whether you are looking for a single or combination of features.

This discussion will address the considerations important in choosing the right finishes for your customers performance needs, i.e. durability, ease of application, safety, and ultimate end-use performance requirements. Consumers needs drive the product value chain and features of value make the margin difference for marketplace success.

The inherent properties of the textile fibres provide room for the growth of micro-organisms. Besides, the structure of the substrates and the chemical processes may induce the growth of microbes. Humid and warm environment still aggravate the problem. Infestation by microbes cause cross infection by pathogens and development odour where the fabric is worn next to skin. In addition, the staining and loss of the performance properties of textile substrates are the results of microbial attack. Basically, with a view to protect the wearer and the textile substrate itself antimicrobial finish is applied to textile materials.