Tag Archives: metal

What Is Pad Printing?

Pad printing is a modern printing process that can be used to quickly transfer 2-D images on to all sorts of 3-D objects. However, before getting into a description of what pad printing is, it’s important to first define a few specific elements that pad printing relies on.

First, it’s important to understand gravure printing. Gravure put simply, is a process that etches an image onto the surface of a metal plate. This places the images – in ink form – in the recesses of the metal plate, unlike relief printing (where the image is raised). By filling the recesses with ink, and leaving the raised portions of the plate dry, the image can be transferred from the plate to the substrate quickly and cleanly. Gravure can produce very fine and detailed images on short or long runs in multiple colors.

Beyond the gravure printing process, pad printing also relies on plates – or cliches. In traditional offset processes, printing relies on transferring an inked image from an offset (the plate) to a rubber blanket which then makes contact with the print surface. When compared to other modern printing methods, offset printing with plates is one of the best solutions when it comes to economically producing commercial quantities of high quality prints, without requiring much maintenance. Today, cliches are made from metal or polyester.

However, pad printing is unique when compared to other gravure and offset methods in that the ink is transferred from the plate with a silicone pad, which then transfers the ink to the substrate. This allows the process to be used for a number of products that would otherwise be impossible to print on, including medical products, electronics, appliances, toys, sports equipment, and more.

Crude forms of the basic premise behind pad printing have existed for hundreds of years. However, the popularity of the process enjoyed rapid expansion when the availability of modern manufacturing made widespread commercial use feasible. This expansion was felt first by the watch-making industry after the Second World War, which then gave way to pad printing being used for far more products. Since then, the method has experienced substantial growth due to the many applications that have found a use for it.

Partly to thank for the rapid growth of pad printing has been the increased availability of advanced silicone. The unique properties of the silicon pads used for the process gives it its highly sought after ability to pick the image up from a flat plate and then transfer it to a number of surfaces – including flat, spherical, textured, concave, and convex surfaces. This makes this specific printing technique invaluable for everyone from appliance manufacturers to electronics manufacturers who need a better solution for membrane switch printing.

What Is Pad Printing?

Pad printing is a modern printing process that can be used to quickly transfer 2-D images on to all sorts of 3-D objects. However, before getting into a description of what pad printing is, it’s important to first define a few specific elements that pad printing relies on.

First, it’s important to understand gravure printing. Gravure put simply, is a process that etches an image onto the surface of a metal plate. This places the images – in ink form – in the recesses of the metal plate, unlike relief printing (where the image is raised). By filling the recesses with ink, and leaving the raised portions of the plate dry, the image can be transferred from the plate to the substrate quickly and cleanly. Gravure can produce very fine and detailed images on short or long runs in multiple colors.

Beyond the gravure printing process, pad printing also relies on plates – or cliches. In traditional offset processes, printing relies on transferring an inked image from an offset (the plate) to a rubber blanket which then makes contact with the print surface. When compared to other modern printing methods, offset printing with plates is one of the best solutions when it comes to economically producing commercial quantities of high quality prints, without requiring much maintenance. Today, cliches are made from metal or polyester.

However, pad printing is unique when compared to other gravure and offset methods in that the ink is transferred from the plate with a silicone pad, which then transfers the ink to the substrate. This allows the process to be used for a number of products that would otherwise be impossible to print on, including medical products, electronics, appliances, toys, sports equipment, and more.

Crude forms of the basic premise behind pad printing have existed for hundreds of years. However, the popularity of the process enjoyed rapid expansion when the availability of modern manufacturing made widespread commercial use feasible. This expansion was felt first by the watch-making industry after the Second World War, which then gave way to pad printing being used for far more products. Since then, the method has experienced substantial growth due to the many applications that have found a use for it.

Partly to thank for the rapid growth of pad printing has been the increased availability of advanced silicone. The unique properties of the silicon pads used for the process gives it its highly sought after ability to pick the image up from a flat plate and then transfer it to a number of surfaces – including flat, spherical, textured, concave, and convex surfaces. This makes this specific printing technique invaluable for everyone from appliance manufacturers to electronics manufacturers who need a better solution for membrane switch printing.

What is high definition plasma cutting?

By definition steel is extremely tough and hard to cut. Thankfully, there are several technologies and machines that have been specifically designed to cut and shape all grades and thicknesses of steel. High definition plasma machines are one such technology that offers incredible accuracy and efficiency when cutting mild steel, stainless steel and aluminium between 3mm-25mm.

In this article, we explore the process of high def plasma cutting and how it compares to other cutting technologies such as oxy fuel.

Plasma cutting basics
Plasma cutting is a process that involves blowing a gas (oxygen, air, inert and others) at high speed out of a nozzle, while at the same time sending an electrical arc through the gas turning it into plasma. The plasma is hot enough to cut metal and moves fast enough to blow the molten metal away from the cut.

High definition plasma (aka HD plasma, CNC plasma, and high density plasma) is the latest in plasma cutting technologies, in which the plasma arc is forced through a smaller nozzle to achieve cleaner, squarer cut edges while at the same time achieving acceptable parts life in the torch.

Modern high def plasma machines can achieve amperages from 130 to 800 and cut carbon steel up to 76mm thick, however it works best on thickness between 3mm-25mm. The technology also allows for high levels of automation, adding to the quality, speed and ease of use and making it the method of choice for metal fabricators worldwide.

HD Plasma vs Oxy fuel Cutting
HD plasma is one option among several other steel cutting technologies, including oxy fuel and laser. Each has been developed for use in different applications. For instance, plasma cutting is ideal for cutting steel and non-ferrous metals, including mild steel, aluminium and stainless steel. It is typically much faster on thinner materials (less than 25mm thick) and is more efficient on non-linear cuts than oxy fuel machines.

For heavier section steels (up to 300mm thick), oxy fuel cutting becomes more efficient as it can cut faster at these thicknesses while using less power. The immense heat that is produced can cause warping on thinner sheet metal, which is another reason why plasma cutting is better for these materials.

Further, as oxy cutting cuts by burning the metal, the process is limited to metals that support the oxidisation process, thus excluding aluminium and stainless steel. For these metals, again, high definition plasma is best.