Printers in Indonesian mean printers (printing devices) and as already known together, the printer is an output device in the form of hardware that is connected to a computer or other digital device. The printer has a function to print text, images and other digital displays to various print media such as paper and the like.

The printer in its development has undergone rapid changes as well as output devices and other computer inputs. The development of printers is still continuing today. Competition between printer manufacturers is increasingly intense where each producer constantly releases their best innovations and products. The evolution of the printer has also been done a lot since the invention of this device until now both in terms of size, speed, price, quality, quantity, and operating techniques.

Very simple forms of printing can be found in China and Korea around 175 AD. The look is upside down on wood, and then bronze has been made this year. The tool is then spiked with ink and then placed on a piece of paper and gently scrubbed using a bamboo stick. Functions that are almost similar to today's stamps.

Ancient Chinese Prints

In the industrial set up of the economy, the printing machines are growing in large numbers. Different printing techniques and processes are used by every industry for effective communication. Any machine used in printing ink on the substrate (printing medium) which can be cloth, paper or plastic, is referred to as the printing machinery. By applying pressure to the substrate, the printing machinery transfers the ink on the printing medium resting on an inked platform composed of movable type. The development of industrial printing machines changed a lot of things in the world. It would make transfer and preservation of historical records, scientific findings, and knowledge easy and possible. There's a great advancement in the printing machinery introduced in the market today given the improvement in science and technology. There's a competition in the industry, as many companies are now making printing press. As every company is introducing better features and making an effort to overcome the other competitors, this has led to the introduction of many enhanced features in printing machinery. With the introduction of various features in these types of machinery, printing is now easier to be done than it was in earlier days.

One of the most common methods of film manufacture is Blown Film (also referred to as the Tubular Film) Extrusion. The process involves extrusion of a plastic through a circular die, followed by "bubble-like" expansion. The principal advantages of manufacturing film by this process include the ability to:

Produce tubing (both flat and gussetted) in a single operation

Regulation of film width and thichness by control of the volume of air in the bubble, the output of the extruder and the speed of the haul-off

Eliminate end effects such as edge bead trim and non uniform temperature that can result from flat die film extrusion

Capability of biaxial orientation (allowing uniformity of mechanical properties)

Cold Cutting Machines: Three Common Types

Three commonly used types of cold cutting machines are pipe cold cutting machines (aka clamshell cutters), cold cutting saws, and abrasive water jet machines. But before we examine each of these, let's clear up what cold cutting actually means.

What is Cold Cutting?

Cold cutting is a procedure used to cut through a material without using heat or a flame, and without producing sparks. This makes the process the safest method for cutting structures in hazardous environments. Typical industries where cold cutting is specified include oil & gas, materials processing, and petrochemicals.

Pipe Cold Cutting Machines

The benefit of multilayer blown film plant is that it uses a combination of two characteristics of the PP material and the brightness features of PE material. One can classify this into several types like two layer co-extruded blown film machine, three layer co-extruded blown film, five layer co-extruded blown film and seven layer co-extruded blown film.

The three layer co-extrusion implements a new type of high efficiency and low energy consumption extrusion line with an IBC cooling system inside the bubble.

Some of the other advantages include:

• Help produce tubing in a single operation

• Regulates film width and thickness depending on the volume of air in the bubble, extruder output, speed of the haul-off.

• It eliminates effects such as edge bead trim, non-uniform temperature.

• Bi axial orientation is possible.

• Can be used for food packaging.