The Company is committed to Total Customer Satisfaction and will set, measure, action and review Quality Objectives to continually improve the effectiveness of the Quality Management System.

http://www.dual-metallising.co.uk/

The Company is dedicated to supplying products in a manner which meets the contractual requirements, that are delivered on time and with the ultimate aim of supplying zero defects.

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Spray Printing Colour Substance

Paint can be denied as “A coloured substance that is spread over a surface and dries to leave a thin decorative or protective coating.” It has a large number of purposes including protection, creative design, decoration, safety for a large range of environments including roads and hospitals. There are a large range of ways to use paint, as it can come in a number of forms including liquid and gaseous. There are a very large number of different types of paint including Emulsion.,Primer, Enamel, Anti Graffiti, Glaze, Anti-Fouling or Climb paints. Each of the different types of paint have a different purpose and different make-up to ensure that they deliver their purpose.

The different states that the paint exists in will change the way that the paint is used. When paint exists as a gas or as a Gas which is suspended in solid or liquid, the paint will be sprayed onto the object to be painted. This is because the application of the paint is in the air and therefore no object will be needed to touch the item to be painted. Also because the distribution will be very uniform resulting in no sharp lines and very small amounts of paint can be utilised. It is also possible to spray a chemical, often different solvents(Substances in which to dissolve other substances) will be sprayed at the same time as the paint so that both reach the item at the same time.

There are a very large number of ways to Spray painting an item. The most well known is that of Air Gun spraying in which a trigger will mix the paint and a compressed air steam to release the mix. This emerges as a fine spray and a large number of different nozzles can be applied to ensure that different outputs are achieved. HLVP and LVLP also are spray guns but attempt to decrease air usage. LVLP are more adept at this as they have Low Pressure and Low Volume unlike HLVP which also have High Pressure.

It is also possible to spray paint electro statically where you charge the paint particles so they repel each other and spread out when sprayed to ensure that an even coat is ensured. They can be charged in a number of different ways. Another way is Rotational Bells can be used, here the disc charges and throw the paint out to hit the item in a uniform coat.  Other ways include Electric fans, Hot spray, Air Assisted airless Spray Guns, Automated Spray Systems and Spray Booths.

Dual Metallising can offer both moulding and vacuum deposition, allowing for us to offer a complete finished reflector in most polymers


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Promotional clocks are a growing part of our business with many styles to choose from, which you can view in our promotional products gallery.

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The Process of Plastic Injection Moulding

This process is very important for producing many different products for a large number of different services including medical. The products produced are extremely diverse ranging from combs to musical instruments to one piece chairs.

Plastic Injection Moulding tends to have the same manufacturing as the other types of Injection moulding. The process that actually happens is that the plastic granules are entered into a hopper that is part of the moulding machine. The granules are moved along by a screw type plunger It is at this stage that any extras are added, for example colourants. After this, the mix enters the heated area, this is where the granules become molten.  After this the mix is injected with a very high force through a nozzle into a mould tool and this is different for every different part that is produced. Here, the mix is cooled and when it is totally cooled, the mould opens itself and the product can be removed. To increase the speed of this final process, the mould is kept very cold so that the plastic cools instantly upon reaching the mould.

Like another industrial processes there are a number of factors that should be controlled to ensure that output is optimum, with as little contamination as possible. The injection speed can be improved by varying the viscosity of the material. The higher the viscosity, the higher the pressure loss and thus the lower the speed.  The higher the speed, the higher the shear rate and viscosity. Although increasing mould and melt temperatures will reduce the viscosity, thus increasing pressure, it will also reduce shear rate. Also, the cooling time can be manipulated, the hotter the melted plastics, the longer for the plastics to cool and thus the thicker the item produced. The Gate Speed and Metering Phase can also be adapted to produce optimum results.

The cost of moulds depends on a large number of factors including number of cavities how complex the mould itself is, how long these moulds are expected to last. There are a number of difference companies offering a large range of services for these machines each offering different ideas.

Advantages the plastic injection moulding process include repeatable results with high production rates, low labour costs, little scrap and the ability to use a very large range of materials. However, the set up of this process is expensive as many of the parts are very expensive. Also, there can be large running costs and the fact that each mould is different for each part can be time-consuming and expensive.