Knowledge Base - HMG Paints Limited

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HMG Knowledge Base

KNB0042 30/04/2013	HMG Guide To Achieving The Correct Colour Achieving the right colour and shade can be difficult for many reasons. The HMG Colour Library has produced this guide to help you achieve the correct colour.
KNB0041 31/01/2013	Aquaguard 4000N Chemical Resistance Knowledge Base article for Aquaguard 4000N Chemical Resistance
KNB0040 06/06/2012	Film Thickness Best Practices HMG Technical Data Sheets indicate a Dry Film Thickness that will be achieved when applying a particular Wet Film Thickness. These values are a guide only and are not to be used as specifications.
KNB0038 08/02/2012	The Use of Cobalt in Coatings Knowledge Base article for The Use of Cobalt in Coatings. The article was distributed by the British Coatings Federation, in February 8th 2012
KNB0037 04/10/2011	Water Based Paints Winter Care A few quick tips on how to care for Water Based Paint during the cold months.
KNB0036 20/09/2011	Lead in Painted Surfaces Guide on Repainting and Removal A good refrence guide for when dealing with Lead in Painted Surfaces whilst Repainting and Removing for DIY and Professional Painters and Decorators
KNB0035 12/04/2011	Wood Coatings Terminology Guide The Wood Coatings Terminology Guide is designed as an introduction to common terms used in the industry.
KNB0034 26/07/2010	BCF Guidance on Spontaneous Combustion The British Coating Federations (BCF) guidance on Spontaneous Combustion. Spontaneous combustion is the ability of certain materials to ignite without the presence of any ignition source such as a flame, spark or heat. This could lead to a major fire and its inherent consequences.
KNB0033 03/06/2010	Spontaneous Combustion A look at Spontaneous Combustion, what is it and how does it occur???
KNB0031 15/02/2010	The Cold Wall Effect Often we have to advise people to be cautious when specifying for areas where the temperature on one side of the coating is substantially different from the one on the other side.
KNB0030 15/02/2010	Blistering The Causes and Prevention One of the complaints levelled at all paint manufacturers concerns moisture blistering, which is probably one of the hardest problems to explain to the repairer on the bodyshop floor. This article will explore and hopefully explain the problem in more detail.
KNB0029 18/08/2009	Surface Preparation And Product Application It has been indicated by The British Iron & Steel Research Association that surface coating applied to blast cleaned substrates may be expected to last five times as long as the same surface that had been weathered, then manually wire brushed.
KNB0028 11/08/2009	Superthane Resistance The chemical and solvent resistance of Superthane films has been tested on the following build-up applied to sandblasted iron bolts.
KNB0027 11/08/2009	Colour Advice Users are advised that the actual paint colour from the container might not be identical to that shown on shade cards, brochures or in photographs. The differences can be caused by a number of factors that will result in colour variations, these being different substrate, different level of gloss which will affect the perceived colour and the level of lighting.
KNB0026 20/05/2009	Pictorial Surface Preparation Standards For Painting Steel Surfaces It has been indicated by The British Iron & Steel Research Association that surface coating applied to blast cleaned substrates may be expected to last five times as long as the same surface that had been weathered, then manually wire brushed.
KNB0025 19/05/2006	Plastic Recycling Codes The following is a list of plastic recycling codes, universally used in the plastics industry. The codes can be used to determine a type of plastic and so identify what surface coatings will adhere to that surface.
KNB0024 19/05/2006	Abbreviations of Plastics The following list gives the abbreviated & full names of a wide range of plastics in common & uncommon use in industry today.
KNB0023 19/05/2006	C71 Speedline Resistance Knowledge Base article for C71 Speedline Resistance
KNB0022 19/05/2006	Epilife Resistance Knowledge Base article for Epilife Resistance
KNB0021 19/05/2006	CrystalSeal Resistance The following information is based on laboratory tests and to best of our knowledge is accurate. However, it is recommended that customers satisfy themselves as to the performance under specific service conditions.
KNB0020 19/05/2006	Time To First Maintenance The time to first maintenance of a product can be described as the length of time before rectification of the product is required. This does not mean the time elapsed to a point where the paint system has degenerated to a widespread breakdown.
KNB0019 19/05/2006	Cross Hatch Test Classification The idea behind a cross hatch adhesion test is to ascertain the level of adhesion of a particular coating or number of coatings onto a substrate. The cross hatch test is a pattern of right angle cuts in the paint surface through to the substrate.
KNB0018 19/05/2006	Coating Swimming Pools Coating swimming pools has more than its fair share of problems in comparison with other industries such as vehicle refinish, rail, marine and general industrial applications. Every year manufacturers of pool paints can count on hearing about disasters that have occurred when end users have paint peeling, blistering or failing to dry, amongst other problems.
KNB0017 18/05/2006	Accelerated Weathering Versus External Exposure Often, paint manufacturers are asked, "How many months or years of 'normal' exposure compare to an exposure test in an accelerated weathering tester?" The quick answer is that it is theoretically impossible to equate a known number of exposure hours in a QUV, cycling humidity or salt spray test machine to external exposure.
KNB0016 18/05/2006	JD/11/77 Code of Practice This Note refers to paints in which an organic isocyanate has been used as a constituent, or is added as part of a two-pack system. The special properties of such paints depend upon the reaction between this isocyanate and a substance providing hydroxyl groups or other reactive hydrogen atoms. In some cases, the substance may be water vapour in the atmosphere.
KNB0015 18/05/2006	Toy Safety Regulations Whilst these regulations strictly only apply to toys and articles intended to be sucked or chewed by children, they are often referred to in the context of other health protection issues. Importantly, the Regulations apply to the toy or article itself as placed on the market.
KNB0014 18/05/2006	Personal Protective Equipment HMG suggest the following precautions are followed when sanding or abrading painted surfaces.
KNB0013 18/05/2006	Hazards & Preventative Methods of Paint Spraying When dealing with paint, potential hazards exist.
KNB0012 18/05/2006	Preparation of Concrete Floors Prior to Coating In the case of newly laid concrete it is important that the concrete has been laid for a minimum of 29 days before considering applying a coating. The moisture content of the concrete should be below 6%. The main problem with the new concrete floors is the weak top surface layer known as laitence.
KNB0011 18/05/2006	Preparation and Painting of Galvanised Steel Galvanising is a form of anti-corrosion treatment for steel. The process involves the steel being immersed into molten zinc at a temperature of 450ºC. The benefits of this process are that it provides a corrosion resistant finish to the steel that can last up to 30 years depending on the quality if the galvanising process and the location of the finished item.
KNB0010 18/05/2006	Scotch Brite Grades Colour, application and the finish produced of Scoth Brite Grades.
KNB0009 18/05/2006	Prep Cleaning Techniques The reason for pre-cleaning substrates that are to be coated is to remove grease, oil, silicones, wax & and any other contaminant. If this practice is omitted there is a significant risk that the ubsequently applied coatings will suffer from a lack of adhesion.
KNB0008 18/05/2006	Temperature on Viscosity The effect of temperature on paint viscosity.
KNB0007 18/05/2006	Practical Application Conditions The effect of humidity and temperature on paint application and storage.
KNB0006 18/05/2006	Theoretical Coverage Chart The following chart gives a theoretical coverage in square metres per litre, based on volume solids. The theoretical coverage is an approximate calculation only, as in 'real life' situation, transfer efficiencies vary between 50-80%. The use of HVLP (High Volume Low Pressure) equipment correctly adjusted will always improve transfer efficiency.
KNB0005 18/05/2006	Temperature Scale A quick ready reckoner calculating temperature in Centigrade and Fahrenheit.
KNB0004 18/05/2006	Overcoating Schedules Explained Our Technical Data Sheets show an overcoating time that must be adhered to, to ensure sufficient curing of the coating prior to subsequent coatings are applied.
KNB0003 18/05/2006	Coverage Rates Explained The theoretical coverage rates shown on HMG Technical Data Sheets are calculated from the solids content by volume and are relevant to application onto a non-porous surface. Each product is individual and has a particular coverage rate; even different colours of the same product may have different coverage rates dependant on the amount of pigmentation.
KNB0002 17/05/2006	Condensation Most of us have been blessed with the experience of pouring an ice-cold beer into a tall glass, on a hot summer day. While lifting the refreshing drink to our dry lips, we have enjoyed the feel of the cool glass and the sight of the moisture and droplets forming on the outside of the glass.
KNB0001 17/05/2006	Aerosol Technical Information Shake can for a minimum of 2 minutes prior to use ensuring that the contents are fully mixed. A trial sample should be done prior to application to guarantee correct colour & sheen. Hold the can 10 - 20cm from surface to be sprayed, moving the can steadily in a straight line, overlapping slightly on each pass.