Or flexible packaging Flexible Packaging part 1

Carton packaging wave is composed of two or more liner paper (kraft), which is reinforced with a wave-shaped layers in the interior of the so-called corrugated medium (flute) and the printing process using a printing technique known flexografi and often with a corrugated printing.
The main purpose of making waves is the cardboard box to protect the contents of the silencer at the same time, especially for freight carried by train or ship. Categories making waves packaging cardboard boxes can be seen from his flute layer which is generally determined in advance. Height and thickness of the flute is varied.

Use a cardboard box first wave started in 1871. When Albert Jones managed to get the award patents in the United States for the use of Single Face Corrugated Board. At that moment in America's great industrial revolution began to scale and then also the technical term is mass production - mass production. Demands for efficiency and ekonomisasi beginning to feel the process of mass production is also necessary in addition to the mass distribution (mass distribution). It turned out that the wave cardboard boxes can meet these challenges, so that still used until now and almost all products traded are now using wave cardboard box.
Currently, the development of rapidly growing industries, especially for goods of daily needs such as electronic goods, radio, tv, computers and perhaps other glassware.

Print In or Rotogravure
Rotogravure print or is printing technique using copper as a reference cylinder printing. Referred to in or intaglio printing because the print part or in lower than the part that does not print. Rotogravure is derived from Roto or ratern which means rotating or spinning, while gravure is gouged.
Gravure cylinder manufacturing process done in 2 ways ie by chemically and mechanically etching with engraving. Printing cylinder has a small cell digravure, or in the etching with various depths. These cells keep the printing ink will be transferred to the printed materials.
Rotogravure technique widely used for packaging candy, cigarettes, folding cardboard boxes, aluminum foil, plastic film, and especially in flexible packaging.
In addition, Gravure printing techniques can be used also for printing the magazine in the amount of millions of copies, such as Readers Digest and National Geographic.
The materials that can be printed by rotogravure paper or cardboard is a smooth surface, thin plastic such as BOPP, PET, paper, aluminum foil, and so on. The ink used is a liquid solvent base ink so easy to dry and are generally transparent and have a low opacity. Various kinds of varnish and gold color can be printed in Rotogravure techniques.
Rotogravure printing machines typically have a common printing cylinders 4-8, so they can print more than 4 colors in a single path. Rotogravure printing is found by Maso Faniguirre in the city state of Florence Italy in 1460.

Rotogravure Working Principle
In principle, Rotogravure printing process is a meeting between the reference cylinder with print media (plastic, paper) directly, and with the cylinder press and then there was the displacement from the reference image print (image area) to the print media. Gravure cylinder submerged in the ink bottle and spin, so the ink layer covering the surface of the print reference cylinder swept by the doctor blade, so that the ink remains only in the image area only.
The process of charging and discharging of cells or wells according gravure design, repeated for each rotation of the cylinder of reference printing and continues in accordance with the number of print circulation.

Rotogravure Benefits:
- Can be printed with a very large circulation
- Halftone printing good quality
- Print color is more consistent block
- High speed

Rotogravure Disadvantages:
- Price printing plates (cylinder) expensive, so the printing technique is only suitable for large scale.
- Proofingnya expensive manufacturing costs, as is usually done directly on the printing press with a cylinder that must be made in advance.

Printing or Print Screen Filter
Print filter or Screen Printing is a way to print by pressing ink through a narrow slit or hole in the fabric of silk (silk screen) as a reference print. Print filter is often referred to as screen printing or silk screen printing as well. Screen printing or stencil printing is a technique widely used for irregular surfaces such as plastic bottles, compact packaging for cosmetics, glass bottle.

Print Work Process Filter
In conventional filtering techniques print, print form is formed by irradiation using a vacuum frame with ultra-violet light through a positive film print to the previous frame has been given a light sensitive emulsion. After irradiation, the image is developed by washing or spraying the frame that has been exposed with ordinary water. Washing it will dissolve the emulsion is not tersinari (as protected by the positive film) forming the image to be printed.

In the CTP system for the print filter, may be more accurate to say that Computer to Screen, irradiation is not carried through the film because images are no longer formed in the film, but formed directly on the print frame. Unlike the other printing techniques, Cts (Computer to Screen) to print filtering techniques, usually done not with a laser light source is complicated and expensive, but with inkjet technology, like what is applicable to ordinary inkjet printers.

Pros print filter:
- Can be printed with above all solids basis. Like glass, glass, ceramic, aluminum, plastic, etc.
- A thick layer of ink can
- Can be printed on a small scale
Lack print filter:
- Detail drawings hard to achieve
- Low speed, (depending on print technology filter used)
- Need a little drying time, because of thick ink.